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\n \n \n `;\n }\n\n static get styles(): CSSResult[] {\n return [\n haStyleDialog,\n css`\n ha-paper-dialog {\n min-width: 350px;\n font-size: 14px;\n border-radius: 2px;\n }\n app-toolbar {\n margin: 0;\n padding: 0 16px;\n color: var(--primary-text-color);\n background-color: var(--secondary-background-color);\n }\n app-toolbar [main-title] {\n margin-left: 16px;\n }\n ha-paper-dialog-scrollable {\n margin: 0;\n }\n paper-checkbox {\n display: block;\n margin: 4px;\n }\n @media all and (max-width: 450px), all and (max-height: 500px) {\n ha-paper-dialog {\n max-height: 100%;\n height: 100%;\n }\n app-toolbar {\n color: var(--text-primary-color);\n background-color: var(--primary-color);\n }\n }\n .details {\n color: var(--secondary-text-color);\n }\n .warning,\n .error {\n color: var(--google-red-500);\n }\n .buttons {\n display: flex;\n flex-direction: column;\n }\n .buttons li {\n list-style-type: none;\n }\n .buttons .icon {\n margin-right: 16px;\n }\n .no-margin-top {\n margin-top: 0;\n }\n `,\n ];\n }\n\n private _updateFolders(item: FolderItem, value: boolean | null | undefined) {\n this._folders = this._folders.map((folder) => {\n if (folder.slug === item.slug) {\n folder.checked = value;\n }\n return folder;\n });\n }\n\n private _updateAddons(item: AddonItem, value: boolean | null | undefined) {\n this._addons = this._addons.map((addon) => {\n if (addon.slug === item.slug) {\n addon.checked = value;\n }\n return addon;\n });\n }\n\n private _passwordInput(ev: PolymerChangedEventHeader
\nDialog body
\n \n ` tag for the header and the\n `buttons` class for the action area. You can use the `paper-dialog-scrollable`\n element (in its own repository) if you need a scrolling content area.\n\n Use the `dialog-dismiss` and `dialog-confirm` attributes on interactive\n controls to close the dialog. If the user dismisses the dialog with\n `dialog-confirm`, the `closingReason` will update to include `confirmed:\n true`.\n\n ### Accessibility\n\n This element has `role=\"dialog\"` by default. Depending on the context, it may\n be more appropriate to override this attribute with `role=\"alertdialog\"`.\n\n If `modal` is set, the element will prevent the focus from exiting the\n element. It will also ensure that focus remains in the dialog.\n\n @hero hero.svg\n @demo demo/index.html\n @polymerBehavior PaperDialogBehavior\n */\nexport const PaperDialogBehaviorImpl = {\n\n hostAttributes: {'role': 'dialog', 'tabindex': '-1'},\n\n properties: {\n\n /**\n * If `modal` is true, this implies `no-cancel-on-outside-click`,\n * `no-cancel-on-esc-key` and `with-backdrop`.\n */\n modal: {type: Boolean, value: false},\n\n __readied: {type: Boolean, value: false}\n\n },\n\n observers: ['_modalChanged(modal, __readied)'],\n\n listeners: {'tap': '_onDialogClick'},\n\n /**\n * @return {void}\n */\n ready: function() {\n // Only now these properties can be read.\n this.__prevNoCancelOnOutsideClick = this.noCancelOnOutsideClick;\n this.__prevNoCancelOnEscKey = this.noCancelOnEscKey;\n this.__prevWithBackdrop = this.withBackdrop;\n this.__readied = true;\n },\n\n _modalChanged: function(modal, readied) {\n // modal implies noCancelOnOutsideClick, noCancelOnEscKey and withBackdrop.\n // We need to wait for the element to be ready before we can read the\n // properties values.\n if (!readied) {\n return;\n }\n\n if (modal) {\n this.__prevNoCancelOnOutsideClick = this.noCancelOnOutsideClick;\n this.__prevNoCancelOnEscKey = this.noCancelOnEscKey;\n this.__prevWithBackdrop = this.withBackdrop;\n this.noCancelOnOutsideClick = true;\n this.noCancelOnEscKey = true;\n this.withBackdrop = true;\n } else {\n // If the value was changed to false, let it false.\n this.noCancelOnOutsideClick =\n this.noCancelOnOutsideClick && this.__prevNoCancelOnOutsideClick;\n this.noCancelOnEscKey =\n this.noCancelOnEscKey && this.__prevNoCancelOnEscKey;\n this.withBackdrop = this.withBackdrop && this.__prevWithBackdrop;\n }\n },\n\n _updateClosingReasonConfirmed: function(confirmed) {\n this.closingReason = this.closingReason || {};\n this.closingReason.confirmed = confirmed;\n },\n\n /**\n * Will dismiss the dialog if user clicked on an element with dialog-dismiss\n * or dialog-confirm attribute.\n */\n _onDialogClick: function(event) {\n // Search for the element with dialog-confirm or dialog-dismiss,\n // from the root target until this (excluded).\n var path = dom(event).path;\n for (var i = 0, l = path.indexOf(this); i < l; i++) {\n var target = path[i];\n if (target.hasAttribute &&\n (target.hasAttribute('dialog-dismiss') ||\n target.hasAttribute('dialog-confirm'))) {\n this._updateClosingReasonConfirmed(\n target.hasAttribute('dialog-confirm'));\n this.close();\n event.stopPropagation();\n break;\n }\n }\n }\n\n};\n\n/** @polymerBehavior */\nexport const PaperDialogBehavior =\n [IronOverlayBehavior, PaperDialogBehaviorImpl];\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\nimport '@polymer/iron-flex-layout/iron-flex-layout.js';\nimport '@polymer/paper-styles/default-theme.js';\n\nimport {PaperDialogBehaviorImpl} from '@polymer/paper-dialog-behavior/paper-dialog-behavior.js';\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\nimport {html} from '@polymer/polymer/lib/utils/html-tag.js';\n\n/**\nMaterial design:\n[Dialogs](https://www.google.com/design/spec/components/dialogs.html)\n\n`paper-dialog-scrollable` implements a scrolling area used in a Material Design\ndialog. It shows a divider at the top and/or bottom indicating more content,\ndepending on scroll position. Use this together with elements implementing\n`Polymer.PaperDialogBehavior`.\n\n \n Header
\n \n Lorem ipsum...\n \n \n \n\nIt shows a top divider after scrolling if it is not the first child in its\nparent container, indicating there is more content above. It shows a bottom\ndivider if it is scrollable and it is not the last child in its parent\ncontainer, indicating there is more content below. The bottom divider is hidden\nif it is scrolled to the bottom.\n\nIf `paper-dialog-scrollable` is not a direct child of the element implementing\n`Polymer.PaperDialogBehavior`, remember to set the `dialogElement`:\n\n \n Header
\n \n Sub-header
\n \n Lorem ipsum...\n \n \n \n \n\n \n\n### Styling\nThe following custom properties and mixins are available for styling:\n\nCustom property | Description | Default\n----------------|-------------|----------\n`--paper-dialog-scrollable` | Mixin for the scrollable content | {}\n\n@group Paper Elements\n@element paper-dialog-scrollable\n@demo demo/index.html\n@hero hero.svg\n*/\nPolymer({\n _template: html`\n \n\n \n `) element | `{}`\n`--paper-dialog-button-color` | Button area foreground color | `--default-primary-color`\n*/\nimport '@polymer/polymer/polymer-legacy.js';\nimport '@polymer/iron-flex-layout/iron-flex-layout.js';\nimport '@polymer/paper-styles/default-theme.js';\nimport '@polymer/paper-styles/typography.js';\nimport '@polymer/paper-styles/shadow.js';\nconst $_documentContainer = document.createElement('template');\n$_documentContainer.setAttribute('style', 'display: none;');\n\n$_documentContainer.innerHTML = `\n \n \n \n `;\n\ndocument.head.appendChild($_documentContainer.content);\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\nimport '@polymer/paper-dialog-behavior/paper-dialog-shared-styles.js';\n\nimport {NeonAnimationRunnerBehavior} from '@polymer/neon-animation/neon-animation-runner-behavior.js';\nimport {PaperDialogBehavior} from '@polymer/paper-dialog-behavior/paper-dialog-behavior.js';\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\nimport {html} from '@polymer/polymer/lib/utils/html-tag.js';\n\n/**\nMaterial design:\n[Dialogs](https://www.google.com/design/spec/components/dialogs.html)\n\n`` is a dialog with Material Design styling and optional\nanimations when it is opened or closed. It provides styles for a header, content\narea, and an action area for buttons. You can use the\n`` element (in its own repository) if you need a\nscrolling content area. To autofocus a specific child element after opening the\ndialog, give it the `autofocus` attribute. See `Polymer.PaperDialogBehavior` and\n`Polymer.IronOverlayBehavior` for specifics.\n\nFor example, the following code implements a dialog with a header, scrolling\ncontent area and buttons. Focus will be given to the `dialog-confirm` button\nwhen the dialog is opened.\n\n \n Header
\n \n Lorem ipsum...\n \n \n \n\n### Styling\n\nSee the docs for `Polymer.PaperDialogBehavior` for the custom properties\navailable for styling this element.\n\n### Animations\n\nSet the `entry-animation` and/or `exit-animation` attributes to add an animation\nwhen the dialog is opened or closed. See the documentation in\n[PolymerElements/neon-animation](https://github.com/PolymerElements/neon-animation)\nfor more info.\n\nFor example:\n\n \n\n \n Header
\n Dialog body\n \n\n### Accessibility\n\nSee the docs for `Polymer.PaperDialogBehavior` for accessibility features\nimplemented by this element.\n\n@group Paper Elements\n@element paper-dialog\n@hero hero.svg\n@demo demo/index.html\n*/\nPolymer({\n _template: html`\n \n \n // \n // \n // \n // \n // \n // TODO(valdrin) support ShadowDOM v1 when upgrading to Polymer v2.0.\n var children;\n if (element.localName === \"content\" || element.localName === \"slot\") {\n children = dom(element).getDistributedNodes();\n } else {\n // /////////////////////////\n // Use shadow root if possible, will check for distributed nodes.\n // THIS IS THE CHANGED LINE\n children = dom(element.shadowRoot || element.root || element).children;\n // /////////////////////////\n }\n for (var i = 0; i < children.length; i++) {\n // Ensure method is always invoked to collect tabbable children.\n needsSort = this._collectTabbableNodes(children[i], result) || needsSort;\n }\n return needsSort;\n },\n};\n","import \"@polymer/paper-dialog/paper-dialog\";\nimport { mixinBehaviors } from \"@polymer/polymer/lib/legacy/class\";\nimport { HaIronFocusablesHelper } from \"./ha-iron-focusables-helper.js\";\n// tslint:disable-next-line\nimport { PaperDialogElement } from \"@polymer/paper-dialog/paper-dialog\";\n\nconst paperDialogClass = customElements.get(\"paper-dialog\");\n\n// behavior that will override existing iron-overlay-behavior and call the fixed implementation\nconst haTabFixBehaviorImpl = {\n get _focusableNodes() {\n return HaIronFocusablesHelper.getTabbableNodes(this);\n },\n};\n\n// paper-dialog that uses the haTabFixBehaviorImpl behvaior\n// export class HaPaperDialog extends paperDialogClass {}\n// @ts-ignore\nexport class HaPaperDialog\n extends mixinBehaviors([haTabFixBehaviorImpl], paperDialogClass)\n implements PaperDialogElement {}\n\ndeclare global {\n interface HTMLElementTagNameMap {\n \"ha-paper-dialog\": HaPaperDialog;\n }\n}\ncustomElements.define(\"ha-paper-dialog\", HaPaperDialog);\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/supervisor/api/panel/chunk.381907f8b6a21cec010f.js b/supervisor/api/panel/chunk.381907f8b6a21cec010f.js
new file mode 100644
index 000000000..4b4429325
--- /dev/null
+++ b/supervisor/api/panel/chunk.381907f8b6a21cec010f.js
@@ -0,0 +1,2 @@
+(self.webpackJsonp=self.webpackJsonp||[]).push([[11],{182:function(H,V,C){"use strict";C.r(V);var L=document.createElement("template");L.setAttribute("style","display: none;"),L.innerHTML='\n \n \n "]);return f=function(){return e},e}function u(){var e=d(["\n =0;n--){var i=this.fromClassDescriptor(e),o=this.toClassDescriptor((0,t[n])(i)||i);if(void 0!==o.finisher&&r.push(o.finisher),void 0!==o.elements){e=o.elements;for(var s=0;s\n `;\n }\n\n return html`\n \n \n \n `;\n }\n\n protected updated(changedProps: PropertyValues) {\n super.firstUpdated(changedProps);\n\n if (!changedProps.has(\"route\")) {\n return;\n }\n\n const addon = this.route.path.substr(1);\n\n const oldRoute = changedProps.get(\"route\") as this[\"route\"] | undefined;\n const oldAddon = oldRoute ? oldRoute.path.substr(1) : undefined;\n\n if (addon && addon !== oldAddon) {\n this._fetchData(addon);\n }\n }\n\n private async _fetchData(addonSlug: string) {\n try {\n const [addon] = await Promise.all([\n fetchHassioAddonInfo(this.hass, addonSlug).catch(() => {\n throw new Error(\"Failed to fetch add-on info\");\n }),\n createHassioSession(this.hass).catch(() => {\n throw new Error(\"Failed to create an ingress session\");\n }),\n ]);\n\n if (!addon.ingress) {\n throw new Error(\"This add-on does not support ingress\");\n }\n\n this._addon = addon;\n } catch (err) {\n // tslint:disable-next-line\n console.error(err);\n alert(err.message || \"Unknown error starting ingress.\");\n history.back();\n }\n }\n\n static get styles(): CSSResult {\n return css`\n iframe {\n display: block;\n width: 100%;\n height: 100%;\n border: 0;\n }\n paper-icon-button {\n color: var(--text-primary-color);\n }\n `;\n }\n}\n\ndeclare global {\n interface HTMLElementTagNameMap {\n \"hassio-ingress-view\": HassioIngressView;\n }\n}\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/supervisor/api/panel/chunk.594ef9f33131c4d33409.js b/supervisor/api/panel/chunk.594ef9f33131c4d33409.js
new file mode 100644
index 000000000..2f557009c
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+++ b/supervisor/api/panel/chunk.594ef9f33131c4d33409.js
@@ -0,0 +1,3 @@
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strict";var n,r=this&&this.__extends||(n=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var i in e)e.hasOwnProperty(i)&&(t[i]=e[i])},function(t,e){function i(){this.constructor=t}n(t,e),t.prototype=null===e?Object.create(e):(i.prototype=e.prototype,new i)});Object.defineProperty(e,"__esModule",{value:!0});var s=i(4),a=i(5),o=i(6),u=i(7),h=i(8),c=i(13),l=i(14);function p(t){var e;switch(t.type){case o.JSXSyntax.JSXIdentifier:e=t.name;break;case o.JSXSyntax.JSXNamespacedName:var i=t;e=p(i.namespace)+":"+p(i.name);break;case o.JSXSyntax.JSXMemberExpression:var n=t;e=p(n.object)+"."+p(n.property)}return e}c.TokenName[100]="JSXIdentifier",c.TokenName[101]="JSXText";var f=function(t){function e(e,i,n){return t.call(this,e,i,n)||this}return r(e,t),e.prototype.parsePrimaryExpression=function(){return this.match("<")?this.parseJSXRoot():t.prototype.parsePrimaryExpression.call(this)},e.prototype.startJSX=function(){this.scanner.index=this.startMarker.index,this.scanner.lineNumber=this.startMarker.line,this.scanner.lineStart=this.startMarker.index-this.startMarker.column},e.prototype.finishJSX=function(){this.nextToken()},e.prototype.reenterJSX=function(){this.startJSX(),this.expectJSX("}"),this.config.tokens&&this.tokens.pop()},e.prototype.createJSXNode=function(){return this.collectComments(),{index:this.scanner.index,line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart}},e.prototype.createJSXChildNode=function(){return{index:this.scanner.index,line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart}},e.prototype.scanXHTMLEntity=function(t){for(var e="&",i=!0,n=!1,r=!1,a=!1;!this.scanner.eof()&&i&&!n;){var o=this.scanner.source[this.scanner.index];if(o===t)break;if(n=";"===o,e+=o,++this.scanner.index,!n)switch(e.length){case 2:r="#"===o;break;case 3:r&&(i=(a="x"===o)||s.Character.isDecimalDigit(o.charCodeAt(0)),r=r&&!a);break;default:i=(i=i&&!(r&&!s.Character.isDecimalDigit(o.charCodeAt(0))))&&!(a&&!s.Character.isHexDigit(o.charCodeAt(0)))}}if(i&&n&&e.length>2){var u=e.substr(1,e.length-2);r&&u.length>1?e=String.fromCharCode(parseInt(u.substr(1),10)):a&&u.length>2?e=String.fromCharCode(parseInt("0"+u.substr(1),16)):r||a||!l.XHTMLEntities[u]||(e=l.XHTMLEntities[u])}return e},e.prototype.lexJSX=function(){var t=this.scanner.source.charCodeAt(this.scanner.index);if(60===t||62===t||47===t||58===t||61===t||123===t||125===t)return{type:7,value:o=this.scanner.source[this.scanner.index++],lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:this.scanner.index-1,end:this.scanner.index};if(34===t||39===t){for(var e=this.scanner.index,i=this.scanner.source[this.scanner.index++],n="";!this.scanner.eof();){if((u=this.scanner.source[this.scanner.index++])===i)break;n+="&"===u?this.scanXHTMLEntity(i):u}return{type:8,value:n,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:e,end:this.scanner.index}}if(46===t){var r=this.scanner.source.charCodeAt(this.scanner.index+1),a=this.scanner.source.charCodeAt(this.scanner.index+2),o=46===r&&46===a?"...":".";e=this.scanner.index;return this.scanner.index+=o.length,{type:7,value:o,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:e,end:this.scanner.index}}if(96===t)return{type:10,value:"",lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:this.scanner.index,end:this.scanner.index};if(s.Character.isIdentifierStart(t)&&92!==t){e=this.scanner.index;for(++this.scanner.index;!this.scanner.eof();){var u=this.scanner.source.charCodeAt(this.scanner.index);if(s.Character.isIdentifierPart(u)&&92!==u)++this.scanner.index;else{if(45!==u)break;++this.scanner.index}}return{type:100,value:this.scanner.source.slice(e,this.scanner.index),lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:e,end:this.scanner.index}}return this.scanner.lex()},e.prototype.nextJSXToken=function(){this.collectComments(),this.startMarker.index=this.scanner.index,this.startMarker.line=this.scanner.lineNumber,this.startMarker.column=this.scanner.index-this.scanner.lineStart;var t=this.lexJSX();return this.lastMarker.index=this.scanner.index,this.lastMarker.line=this.scanner.lineNumber,this.lastMarker.column=this.scanner.index-this.scanner.lineStart,this.config.tokens&&this.tokens.push(this.convertToken(t)),t},e.prototype.nextJSXText=function(){this.startMarker.index=this.scanner.index,this.startMarker.line=this.scanner.lineNumber,this.startMarker.column=this.scanner.index-this.scanner.lineStart;for(var t=this.scanner.index,e="";!this.scanner.eof();){var i=this.scanner.source[this.scanner.index];if("{"===i||"<"===i)break;++this.scanner.index,e+=i,s.Character.isLineTerminator(i.charCodeAt(0))&&(++this.scanner.lineNumber,"\r"===i&&"\n"===this.scanner.source[this.scanner.index]&&++this.scanner.index,this.scanner.lineStart=this.scanner.index)}this.lastMarker.index=this.scanner.index,this.lastMarker.line=this.scanner.lineNumber,this.lastMarker.column=this.scanner.index-this.scanner.lineStart;var n={type:101,value:e,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:t,end:this.scanner.index};return e.length>0&&this.config.tokens&&this.tokens.push(this.convertToken(n)),n},e.prototype.peekJSXToken=function(){var t=this.scanner.saveState();this.scanner.scanComments();var e=this.lexJSX();return this.scanner.restoreState(t),e},e.prototype.expectJSX=function(t){var e=this.nextJSXToken();7===e.type&&e.value===t||this.throwUnexpectedToken(e)},e.prototype.matchJSX=function(t){var e=this.peekJSXToken();return 7===e.type&&e.value===t},e.prototype.parseJSXIdentifier=function(){var t=this.createJSXNode(),e=this.nextJSXToken();return 100!==e.type&&this.throwUnexpectedToken(e),this.finalize(t,new a.JSXIdentifier(e.value))},e.prototype.parseJSXElementName=function(){var t=this.createJSXNode(),e=this.parseJSXIdentifier();if(this.matchJSX(":")){var i=e;this.expectJSX(":");var n=this.parseJSXIdentifier();e=this.finalize(t,new a.JSXNamespacedName(i,n))}else if(this.matchJSX("."))for(;this.matchJSX(".");){var r=e;this.expectJSX(".");var s=this.parseJSXIdentifier();e=this.finalize(t,new a.JSXMemberExpression(r,s))}return e},e.prototype.parseJSXAttributeName=function(){var t,e=this.createJSXNode(),i=this.parseJSXIdentifier();if(this.matchJSX(":")){var n=i;this.expectJSX(":");var r=this.parseJSXIdentifier();t=this.finalize(e,new a.JSXNamespacedName(n,r))}else t=i;return t},e.prototype.parseJSXStringLiteralAttribute=function(){var t=this.createJSXNode(),e=this.nextJSXToken();8!==e.type&&this.throwUnexpectedToken(e);var i=this.getTokenRaw(e);return this.finalize(t,new u.Literal(e.value,i))},e.prototype.parseJSXExpressionAttribute=function(){var t=this.createJSXNode();this.expectJSX("{"),this.finishJSX(),this.match("}")&&this.tolerateError("JSX attributes must only be assigned a non-empty expression");var e=this.parseAssignmentExpression();return this.reenterJSX(),this.finalize(t,new a.JSXExpressionContainer(e))},e.prototype.parseJSXAttributeValue=function(){return this.matchJSX("{")?this.parseJSXExpressionAttribute():this.matchJSX("<")?this.parseJSXElement():this.parseJSXStringLiteralAttribute()},e.prototype.parseJSXNameValueAttribute=function(){var t=this.createJSXNode(),e=this.parseJSXAttributeName(),i=null;return this.matchJSX("=")&&(this.expectJSX("="),i=this.parseJSXAttributeValue()),this.finalize(t,new a.JSXAttribute(e,i))},e.prototype.parseJSXSpreadAttribute=function(){var t=this.createJSXNode();this.expectJSX("{"),this.expectJSX("..."),this.finishJSX();var e=this.parseAssignmentExpression();return this.reenterJSX(),this.finalize(t,new a.JSXSpreadAttribute(e))},e.prototype.parseJSXAttributes=function(){for(var t=[];!this.matchJSX("/")&&!this.matchJSX(">");){var e=this.matchJSX("{")?this.parseJSXSpreadAttribute():this.parseJSXNameValueAttribute();t.push(e)}return t},e.prototype.parseJSXOpeningElement=function(){var t=this.createJSXNode();this.expectJSX("<");var e=this.parseJSXElementName(),i=this.parseJSXAttributes(),n=this.matchJSX("/");return n&&this.expectJSX("/"),this.expectJSX(">"),this.finalize(t,new a.JSXOpeningElement(e,n,i))},e.prototype.parseJSXBoundaryElement=function(){var t=this.createJSXNode();if(this.expectJSX("<"),this.matchJSX("/")){this.expectJSX("/");var e=this.parseJSXElementName();return this.expectJSX(">"),this.finalize(t,new a.JSXClosingElement(e))}var i=this.parseJSXElementName(),n=this.parseJSXAttributes(),r=this.matchJSX("/");return r&&this.expectJSX("/"),this.expectJSX(">"),this.finalize(t,new a.JSXOpeningElement(i,r,n))},e.prototype.parseJSXEmptyExpression=function(){var t=this.createJSXChildNode();return this.collectComments(),this.lastMarker.index=this.scanner.index,this.lastMarker.line=this.scanner.lineNumber,this.lastMarker.column=this.scanner.index-this.scanner.lineStart,this.finalize(t,new a.JSXEmptyExpression)},e.prototype.parseJSXExpressionContainer=function(){var t,e=this.createJSXNode();return this.expectJSX("{"),this.matchJSX("}")?(t=this.parseJSXEmptyExpression(),this.expectJSX("}")):(this.finishJSX(),t=this.parseAssignmentExpression(),this.reenterJSX()),this.finalize(e,new a.JSXExpressionContainer(t))},e.prototype.parseJSXChildren=function(){for(var t=[];!this.scanner.eof();){var e=this.createJSXChildNode(),i=this.nextJSXText();if(i.start0))break;s=this.finalize(t.node,new a.JSXElement(t.opening,t.children,t.closing));(t=e[e.length-1]).children.push(s),e.pop()}}return t},e.prototype.parseJSXElement=function(){var t=this.createJSXNode(),e=this.parseJSXOpeningElement(),i=[],n=null;if(!e.selfClosing){var r=this.parseComplexJSXElement({node:t,opening:e,closing:n,children:i});i=r.children,n=r.closing}return this.finalize(t,new a.JSXElement(e,i,n))},e.prototype.parseJSXRoot=function(){this.config.tokens&&this.tokens.pop(),this.startJSX();var t=this.parseJSXElement();return this.finishJSX(),t},e.prototype.isStartOfExpression=function(){return t.prototype.isStartOfExpression.call(this)||this.match("<")},e}(h.Parser);e.JSXParser=f},function(t,e){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var 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this.expect("}"),this.finalize(t,new a.ObjectExpression(e))},t.prototype.parseTemplateHead=function(){n.assert(this.lookahead.head,"Template literal must start with a template head");var t=this.createNode(),e=this.nextToken(),i=e.value,r=e.cooked;return this.finalize(t,new a.TemplateElement({raw:i,cooked:r},e.tail))},t.prototype.parseTemplateElement=function(){10!==this.lookahead.type&&this.throwUnexpectedToken();var t=this.createNode(),e=this.nextToken(),i=e.value,n=e.cooked;return this.finalize(t,new a.TemplateElement({raw:i,cooked:n},e.tail))},t.prototype.parseTemplateLiteral=function(){var t=this.createNode(),e=[],i=[],n=this.parseTemplateHead();for(i.push(n);!n.tail;)e.push(this.parseExpression()),n=this.parseTemplateElement(),i.push(n);return this.finalize(t,new a.TemplateLiteral(i,e))},t.prototype.reinterpretExpressionAsPattern=function(t){switch(t.type){case u.Syntax.Identifier:case u.Syntax.MemberExpression:case u.Syntax.RestElement:case u.Syntax.AssignmentPattern:break;case u.Syntax.SpreadElement:t.type=u.Syntax.RestElement,this.reinterpretExpressionAsPattern(t.argument);break;case u.Syntax.ArrayExpression:t.type=u.Syntax.ArrayPattern;for(var e=0;e")||this.expect("=>"),t={type:"ArrowParameterPlaceHolder",params:[],async:!1};else{var e=this.lookahead,i=[];if(this.match("..."))t=this.parseRestElement(i),this.expect(")"),this.match("=>")||this.expect("=>"),t={type:"ArrowParameterPlaceHolder",params:[t],async:!1};else{var n=!1;if(this.context.isBindingElement=!0,t=this.inheritCoverGrammar(this.parseAssignmentExpression),this.match(",")){var r=[];for(this.context.isAssignmentTarget=!1,r.push(t);2!==this.lookahead.type&&this.match(",");){if(this.nextToken(),this.match(")")){this.nextToken();for(var s=0;s")||this.expect("=>"),this.context.isBindingElement=!1;for(s=0;s")&&(t.type===u.Syntax.Identifier&&"yield"===t.name&&(n=!0,t={type:"ArrowParameterPlaceHolder",params:[t],async:!1}),!n)){if(this.context.isBindingElement||this.throwUnexpectedToken(this.lookahead),t.type===u.Syntax.SequenceExpression)for(s=0;s")){for(var u=0;u0){this.nextToken(),this.context.isAssignmentTarget=!1,this.context.isBindingElement=!1;for(var r=[t,this.lookahead],s=e,o=this.isolateCoverGrammar(this.parseExponentiationExpression),u=[s,i.value,o],h=[n];!((n=this.binaryPrecedence(this.lookahead))<=0);){for(;u.length>2&&n<=h[h.length-1];){o=u.pop();var c=u.pop();h.pop(),s=u.pop(),r.pop();var l=this.startNode(r[r.length-1]);u.push(this.finalize(l,new a.BinaryExpression(c,s,o)))}u.push(this.nextToken().value),h.push(n),r.push(this.lookahead),u.push(this.isolateCoverGrammar(this.parseExponentiationExpression))}var p=u.length-1;e=u[p];for(var f=r.pop();p>1;){var d=r.pop(),m=f&&f.lineStart;l=this.startNode(d,m),c=u[p-1];e=this.finalize(l,new a.BinaryExpression(c,u[p-2],e)),p-=2,f=d}}return e},t.prototype.parseConditionalExpression=function(){var t=this.lookahead,e=this.inheritCoverGrammar(this.parseBinaryExpression);if(this.match("?")){this.nextToken();var i=this.context.allowIn;this.context.allowIn=!0;var n=this.isolateCoverGrammar(this.parseAssignmentExpression);this.context.allowIn=i,this.expect(":");var r=this.isolateCoverGrammar(this.parseAssignmentExpression);e=this.finalize(this.startNode(t),new a.ConditionalExpression(e,n,r)),this.context.isAssignmentTarget=!1,this.context.isBindingElement=!1}return e},t.prototype.checkPatternParam=function(t,e){switch(e.type){case u.Syntax.Identifier:this.validateParam(t,e,e.name);break;case u.Syntax.RestElement:this.checkPatternParam(t,e.argument);break;case u.Syntax.AssignmentPattern:this.checkPatternParam(t,e.left);break;case u.Syntax.ArrayPattern:for(var i=0;i")){this.context.isAssignmentTarget=!1,this.context.isBindingElement=!1;var r=t.async,o=this.reinterpretAsCoverFormalsList(t);if(o){this.hasLineTerminator&&this.tolerateUnexpectedToken(this.lookahead),this.context.firstCoverInitializedNameError=null;var h=this.context.strict,c=this.context.allowStrictDirective;this.context.allowStrictDirective=o.simple;var l=this.context.allowYield,p=this.context.await;this.context.allowYield=!0,this.context.await=r;var f=this.startNode(e);this.expect("=>");var d=void 0;if(this.match("{")){var m=this.context.allowIn;this.context.allowIn=!0,d=this.parseFunctionSourceElements(),this.context.allowIn=m}else d=this.isolateCoverGrammar(this.parseAssignmentExpression);var y=d.type!==u.Syntax.BlockStatement;this.context.strict&&o.firstRestricted&&this.throwUnexpectedToken(o.firstRestricted,o.message),this.context.strict&&o.stricted&&this.tolerateUnexpectedToken(o.stricted,o.message),t=r?this.finalize(f,new a.AsyncArrowFunctionExpression(o.params,d,y)):this.finalize(f,new a.ArrowFunctionExpression(o.params,d,y)),this.context.strict=h,this.context.allowStrictDirective=c,this.context.allowYield=l,this.context.await=p}}else if(this.matchAssign()){if(this.context.isAssignmentTarget||this.tolerateError(s.Messages.InvalidLHSInAssignment),this.context.strict&&t.type===u.Syntax.Identifier){var x=t;this.scanner.isRestrictedWord(x.name)&&this.tolerateUnexpectedToken(i,s.Messages.StrictLHSAssignment),this.scanner.isStrictModeReservedWord(x.name)&&this.tolerateUnexpectedToken(i,s.Messages.StrictReservedWord)}this.match("=")?this.reinterpretExpressionAsPattern(t):(this.context.isAssignmentTarget=!1,this.context.isBindingElement=!1);var g=(i=this.nextToken()).value,v=this.isolateCoverGrammar(this.parseAssignmentExpression);t=this.finalize(this.startNode(e),new a.AssignmentExpression(g,t,v)),this.context.firstCoverInitializedNameError=null}}return t},t.prototype.parseExpression=function(){var t=this.lookahead,e=this.isolateCoverGrammar(this.parseAssignmentExpression);if(this.match(",")){var i=[];for(i.push(e);2!==this.lookahead.type&&this.match(",");)this.nextToken(),i.push(this.isolateCoverGrammar(this.parseAssignmentExpression));e=this.finalize(this.startNode(t),new a.SequenceExpression(i))}return e},t.prototype.parseStatementListItem=function(){var t;if(this.context.isAssignmentTarget=!0,this.context.isBindingElement=!0,4===this.lookahead.type)switch(this.lookahead.value){case"export":this.context.isModule||this.tolerateUnexpectedToken(this.lookahead,s.Messages.IllegalExportDeclaration),t=this.parseExportDeclaration();break;case"import":this.context.isModule||this.tolerateUnexpectedToken(this.lookahead,s.Messages.IllegalImportDeclaration),t=this.parseImportDeclaration();break;case"const":t=this.parseLexicalDeclaration({inFor:!1});break;case"function":t=this.parseFunctionDeclaration();break;case"class":t=this.parseClassDeclaration();break;case"let":t=this.isLexicalDeclaration()?this.parseLexicalDeclaration({inFor:!1}):this.parseStatement();break;default:t=this.parseStatement()}else t=this.parseStatement();return t},t.prototype.parseBlock=function(){var t=this.createNode();this.expect("{");for(var e=[];!this.match("}");)e.push(this.parseStatementListItem());return this.expect("}"),this.finalize(t,new a.BlockStatement(e))},t.prototype.parseLexicalBinding=function(t,e){var i=this.createNode(),n=this.parsePattern([],t);this.context.strict&&n.type===u.Syntax.Identifier&&this.scanner.isRestrictedWord(n.name)&&this.tolerateError(s.Messages.StrictVarName);var r=null;return"const"===t?this.matchKeyword("in")||this.matchContextualKeyword("of")||(this.match("=")?(this.nextToken(),r=this.isolateCoverGrammar(this.parseAssignmentExpression)):this.throwError(s.Messages.DeclarationMissingInitializer,"const")):(!e.inFor&&n.type!==u.Syntax.Identifier||this.match("="))&&(this.expect("="),r=this.isolateCoverGrammar(this.parseAssignmentExpression)),this.finalize(i,new a.VariableDeclarator(n,r))},t.prototype.parseBindingList=function(t,e){for(var i=[this.parseLexicalBinding(t,e)];this.match(",");)this.nextToken(),i.push(this.parseLexicalBinding(t,e));return i},t.prototype.isLexicalDeclaration=function(){var t=this.scanner.saveState();this.scanner.scanComments();var e=this.scanner.lex();return this.scanner.restoreState(t),3===e.type||7===e.type&&"["===e.value||7===e.type&&"{"===e.value||4===e.type&&"let"===e.value||4===e.type&&"yield"===e.value},t.prototype.parseLexicalDeclaration=function(t){var e=this.createNode(),i=this.nextToken().value;n.assert("let"===i||"const"===i,"Lexical declaration must be either let or const");var r=this.parseBindingList(i,t);return this.consumeSemicolon(),this.finalize(e,new a.VariableDeclaration(r,i))},t.prototype.parseBindingRestElement=function(t,e){var i=this.createNode();this.expect("...");var n=this.parsePattern(t,e);return this.finalize(i,new a.RestElement(n))},t.prototype.parseArrayPattern=function(t,e){var i=this.createNode();this.expect("[");for(var n=[];!this.match("]");)if(this.match(","))this.nextToken(),n.push(null);else{if(this.match("...")){n.push(this.parseBindingRestElement(t,e));break}n.push(this.parsePatternWithDefault(t,e)),this.match("]")||this.expect(",")}return this.expect("]"),this.finalize(i,new a.ArrayPattern(n))},t.prototype.parsePropertyPattern=function(t,e){var i,n,r=this.createNode(),s=!1,o=!1;if(3===this.lookahead.type){var u=this.lookahead;i=this.parseVariableIdentifier();var h=this.finalize(r,new a.Identifier(u.value));if(this.match("=")){t.push(u),o=!0,this.nextToken();var c=this.parseAssignmentExpression();n=this.finalize(this.startNode(u),new a.AssignmentPattern(h,c))}else this.match(":")?(this.expect(":"),n=this.parsePatternWithDefault(t,e)):(t.push(u),o=!0,n=h)}else s=this.match("["),i=this.parseObjectPropertyKey(),this.expect(":"),n=this.parsePatternWithDefault(t,e);return this.finalize(r,new a.Property("init",i,s,n,!1,o))},t.prototype.parseObjectPattern=function(t,e){var i=this.createNode(),n=[];for(this.expect("{");!this.match("}");)n.push(this.parsePropertyPattern(t,e)),this.match("}")||this.expect(",");return this.expect("}"),this.finalize(i,new a.ObjectPattern(n))},t.prototype.parsePattern=function(t,e){var i;return this.match("[")?i=this.parseArrayPattern(t,e):this.match("{")?i=this.parseObjectPattern(t,e):(!this.matchKeyword("let")||"const"!==e&&"let"!==e||this.tolerateUnexpectedToken(this.lookahead,s.Messages.LetInLexicalBinding),t.push(this.lookahead),i=this.parseVariableIdentifier(e)),i},t.prototype.parsePatternWithDefault=function(t,e){var i=this.lookahead,n=this.parsePattern(t,e);if(this.match("=")){this.nextToken();var r=this.context.allowYield;this.context.allowYield=!0;var s=this.isolateCoverGrammar(this.parseAssignmentExpression);this.context.allowYield=r,n=this.finalize(this.startNode(i),new a.AssignmentPattern(n,s))}return n},t.prototype.parseVariableIdentifier=function(t){var e=this.createNode(),i=this.nextToken();return 4===i.type&&"yield"===i.value?this.context.strict?this.tolerateUnexpectedToken(i,s.Messages.StrictReservedWord):this.context.allowYield||this.throwUnexpectedToken(i):3!==i.type?this.context.strict&&4===i.type&&this.scanner.isStrictModeReservedWord(i.value)?this.tolerateUnexpectedToken(i,s.Messages.StrictReservedWord):(this.context.strict||"let"!==i.value||"var"!==t)&&this.throwUnexpectedToken(i):(this.context.isModule||this.context.await)&&3===i.type&&"await"===i.value&&this.tolerateUnexpectedToken(i),this.finalize(e,new a.Identifier(i.value))},t.prototype.parseVariableDeclaration=function(t){var e=this.createNode(),i=this.parsePattern([],"var");this.context.strict&&i.type===u.Syntax.Identifier&&this.scanner.isRestrictedWord(i.name)&&this.tolerateError(s.Messages.StrictVarName);var n=null;return this.match("=")?(this.nextToken(),n=this.isolateCoverGrammar(this.parseAssignmentExpression)):i.type===u.Syntax.Identifier||t.inFor||this.expect("="),this.finalize(e,new a.VariableDeclarator(i,n))},t.prototype.parseVariableDeclarationList=function(t){var e={inFor:t.inFor},i=[];for(i.push(this.parseVariableDeclaration(e));this.match(",");)this.nextToken(),i.push(this.parseVariableDeclaration(e));return i},t.prototype.parseVariableStatement=function(){var t=this.createNode();this.expectKeyword("var");var e=this.parseVariableDeclarationList({inFor:!1});return this.consumeSemicolon(),this.finalize(t,new a.VariableDeclaration(e,"var"))},t.prototype.parseEmptyStatement=function(){var t=this.createNode();return this.expect(";"),this.finalize(t,new a.EmptyStatement)},t.prototype.parseExpressionStatement=function(){var t=this.createNode(),e=this.parseExpression();return this.consumeSemicolon(),this.finalize(t,new a.ExpressionStatement(e))},t.prototype.parseIfClause=function(){return this.context.strict&&this.matchKeyword("function")&&this.tolerateError(s.Messages.StrictFunction),this.parseStatement()},t.prototype.parseIfStatement=function(){var t,e=this.createNode(),i=null;this.expectKeyword("if"),this.expect("(");var n=this.parseExpression();return!this.match(")")&&this.config.tolerant?(this.tolerateUnexpectedToken(this.nextToken()),t=this.finalize(this.createNode(),new a.EmptyStatement)):(this.expect(")"),t=this.parseIfClause(),this.matchKeyword("else")&&(this.nextToken(),i=this.parseIfClause())),this.finalize(e,new a.IfStatement(n,t,i))},t.prototype.parseDoWhileStatement=function(){var t=this.createNode();this.expectKeyword("do");var e=this.context.inIteration;this.context.inIteration=!0;var i=this.parseStatement();this.context.inIteration=e,this.expectKeyword("while"),this.expect("(");var n=this.parseExpression();return!this.match(")")&&this.config.tolerant?this.tolerateUnexpectedToken(this.nextToken()):(this.expect(")"),this.match(";")&&this.nextToken()),this.finalize(t,new a.DoWhileStatement(i,n))},t.prototype.parseWhileStatement=function(){var t,e=this.createNode();this.expectKeyword("while"),this.expect("(");var i=this.parseExpression();if(!this.match(")")&&this.config.tolerant)this.tolerateUnexpectedToken(this.nextToken()),t=this.finalize(this.createNode(),new a.EmptyStatement);else{this.expect(")");var n=this.context.inIteration;this.context.inIteration=!0,t=this.parseStatement(),this.context.inIteration=n}return this.finalize(e,new a.WhileStatement(i,t))},t.prototype.parseForStatement=function(){var t,e,i,n=null,r=null,o=null,h=!0,c=this.createNode();if(this.expectKeyword("for"),this.expect("("),this.match(";"))this.nextToken();else if(this.matchKeyword("var")){n=this.createNode(),this.nextToken();var l=this.context.allowIn;this.context.allowIn=!1;var p=this.parseVariableDeclarationList({inFor:!0});if(this.context.allowIn=l,1===p.length&&this.matchKeyword("in")){var f=p[0];f.init&&(f.id.type===u.Syntax.ArrayPattern||f.id.type===u.Syntax.ObjectPattern||this.context.strict)&&this.tolerateError(s.Messages.ForInOfLoopInitializer,"for-in"),n=this.finalize(n,new a.VariableDeclaration(p,"var")),this.nextToken(),t=n,e=this.parseExpression(),n=null}else 1===p.length&&null===p[0].init&&this.matchContextualKeyword("of")?(n=this.finalize(n,new a.VariableDeclaration(p,"var")),this.nextToken(),t=n,e=this.parseAssignmentExpression(),n=null,h=!1):(n=this.finalize(n,new a.VariableDeclaration(p,"var")),this.expect(";"))}else if(this.matchKeyword("const")||this.matchKeyword("let")){n=this.createNode();var d=this.nextToken().value;if(this.context.strict||"in"!==this.lookahead.value){l=this.context.allowIn;this.context.allowIn=!1;p=this.parseBindingList(d,{inFor:!0});this.context.allowIn=l,1===p.length&&null===p[0].init&&this.matchKeyword("in")?(n=this.finalize(n,new a.VariableDeclaration(p,d)),this.nextToken(),t=n,e=this.parseExpression(),n=null):1===p.length&&null===p[0].init&&this.matchContextualKeyword("of")?(n=this.finalize(n,new a.VariableDeclaration(p,d)),this.nextToken(),t=n,e=this.parseAssignmentExpression(),n=null,h=!1):(this.consumeSemicolon(),n=this.finalize(n,new a.VariableDeclaration(p,d)))}else n=this.finalize(n,new a.Identifier(d)),this.nextToken(),t=n,e=this.parseExpression(),n=null}else{var m=this.lookahead;l=this.context.allowIn;if(this.context.allowIn=!1,n=this.inheritCoverGrammar(this.parseAssignmentExpression),this.context.allowIn=l,this.matchKeyword("in"))this.context.isAssignmentTarget&&n.type!==u.Syntax.AssignmentExpression||this.tolerateError(s.Messages.InvalidLHSInForIn),this.nextToken(),this.reinterpretExpressionAsPattern(n),t=n,e=this.parseExpression(),n=null;else if(this.matchContextualKeyword("of"))this.context.isAssignmentTarget&&n.type!==u.Syntax.AssignmentExpression||this.tolerateError(s.Messages.InvalidLHSInForLoop),this.nextToken(),this.reinterpretExpressionAsPattern(n),t=n,e=this.parseAssignmentExpression(),n=null,h=!1;else{if(this.match(",")){for(var y=[n];this.match(",");)this.nextToken(),y.push(this.isolateCoverGrammar(this.parseAssignmentExpression));n=this.finalize(this.startNode(m),new a.SequenceExpression(y))}this.expect(";")}}if(void 0===t&&(this.match(";")||(r=this.parseExpression()),this.expect(";"),this.match(")")||(o=this.parseExpression())),!this.match(")")&&this.config.tolerant)this.tolerateUnexpectedToken(this.nextToken()),i=this.finalize(this.createNode(),new a.EmptyStatement);else{this.expect(")");var x=this.context.inIteration;this.context.inIteration=!0,i=this.isolateCoverGrammar(this.parseStatement),this.context.inIteration=x}return void 0===t?this.finalize(c,new a.ForStatement(n,r,o,i)):h?this.finalize(c,new a.ForInStatement(t,e,i)):this.finalize(c,new a.ForOfStatement(t,e,i))},t.prototype.parseContinueStatement=function(){var t=this.createNode();this.expectKeyword("continue");var e=null;if(3===this.lookahead.type&&!this.hasLineTerminator){var i=this.parseVariableIdentifier();e=i;var n="$"+i.name;Object.prototype.hasOwnProperty.call(this.context.labelSet,n)||this.throwError(s.Messages.UnknownLabel,i.name)}return this.consumeSemicolon(),null!==e||this.context.inIteration||this.throwError(s.Messages.IllegalContinue),this.finalize(t,new a.ContinueStatement(e))},t.prototype.parseBreakStatement=function(){var t=this.createNode();this.expectKeyword("break");var e=null;if(3===this.lookahead.type&&!this.hasLineTerminator){var i=this.parseVariableIdentifier(),n="$"+i.name;Object.prototype.hasOwnProperty.call(this.context.labelSet,n)||this.throwError(s.Messages.UnknownLabel,i.name),e=i}return this.consumeSemicolon(),null!==e||this.context.inIteration||this.context.inSwitch||this.throwError(s.Messages.IllegalBreak),this.finalize(t,new a.BreakStatement(e))},t.prototype.parseReturnStatement=function(){this.context.inFunctionBody||this.tolerateError(s.Messages.IllegalReturn);var t=this.createNode();this.expectKeyword("return");var e=!this.match(";")&&!this.match("}")&&!this.hasLineTerminator&&2!==this.lookahead.type||8===this.lookahead.type||10===this.lookahead.type?this.parseExpression():null;return this.consumeSemicolon(),this.finalize(t,new a.ReturnStatement(e))},t.prototype.parseWithStatement=function(){this.context.strict&&this.tolerateError(s.Messages.StrictModeWith);var t,e=this.createNode();this.expectKeyword("with"),this.expect("(");var i=this.parseExpression();return!this.match(")")&&this.config.tolerant?(this.tolerateUnexpectedToken(this.nextToken()),t=this.finalize(this.createNode(),new a.EmptyStatement)):(this.expect(")"),t=this.parseStatement()),this.finalize(e,new a.WithStatement(i,t))},t.prototype.parseSwitchCase=function(){var t,e=this.createNode();this.matchKeyword("default")?(this.nextToken(),t=null):(this.expectKeyword("case"),t=this.parseExpression()),this.expect(":");for(var i=[];!(this.match("}")||this.matchKeyword("default")||this.matchKeyword("case"));)i.push(this.parseStatementListItem());return this.finalize(e,new a.SwitchCase(t,i))},t.prototype.parseSwitchStatement=function(){var t=this.createNode();this.expectKeyword("switch"),this.expect("(");var e=this.parseExpression();this.expect(")");var i=this.context.inSwitch;this.context.inSwitch=!0;var n=[],r=!1;for(this.expect("{");!this.match("}");){var o=this.parseSwitchCase();null===o.test&&(r&&this.throwError(s.Messages.MultipleDefaultsInSwitch),r=!0),n.push(o)}return this.expect("}"),this.context.inSwitch=i,this.finalize(t,new a.SwitchStatement(e,n))},t.prototype.parseLabelledStatement=function(){var t,e=this.createNode(),i=this.parseExpression();if(i.type===u.Syntax.Identifier&&this.match(":")){this.nextToken();var n=i,r="$"+n.name;Object.prototype.hasOwnProperty.call(this.context.labelSet,r)&&this.throwError(s.Messages.Redeclaration,"Label",n.name),this.context.labelSet[r]=!0;var o=void 0;if(this.matchKeyword("class"))this.tolerateUnexpectedToken(this.lookahead),o=this.parseClassDeclaration();else if(this.matchKeyword("function")){var h=this.lookahead,c=this.parseFunctionDeclaration();this.context.strict?this.tolerateUnexpectedToken(h,s.Messages.StrictFunction):c.generator&&this.tolerateUnexpectedToken(h,s.Messages.GeneratorInLegacyContext),o=c}else o=this.parseStatement();delete this.context.labelSet[r],t=new a.LabeledStatement(n,o)}else this.consumeSemicolon(),t=new a.ExpressionStatement(i);return this.finalize(e,t)},t.prototype.parseThrowStatement=function(){var t=this.createNode();this.expectKeyword("throw"),this.hasLineTerminator&&this.throwError(s.Messages.NewlineAfterThrow);var e=this.parseExpression();return this.consumeSemicolon(),this.finalize(t,new a.ThrowStatement(e))},t.prototype.parseCatchClause=function(){var t=this.createNode();this.expectKeyword("catch"),this.expect("("),this.match(")")&&this.throwUnexpectedToken(this.lookahead);for(var e=[],i=this.parsePattern(e),n={},r=0;r0&&this.tolerateError(s.Messages.BadGetterArity);var n=this.parsePropertyMethod(i);return this.context.allowYield=e,this.finalize(t,new a.FunctionExpression(null,i.params,n,!1))},t.prototype.parseSetterMethod=function(){var t=this.createNode(),e=this.context.allowYield;this.context.allowYield=!0;var i=this.parseFormalParameters();1!==i.params.length?this.tolerateError(s.Messages.BadSetterArity):i.params[0]instanceof a.RestElement&&this.tolerateError(s.Messages.BadSetterRestParameter);var n=this.parsePropertyMethod(i);return this.context.allowYield=e,this.finalize(t,new a.FunctionExpression(null,i.params,n,!1))},t.prototype.parseGeneratorMethod=function(){var t=this.createNode(),e=this.context.allowYield;this.context.allowYield=!0;var i=this.parseFormalParameters();this.context.allowYield=!1;var n=this.parsePropertyMethod(i);return this.context.allowYield=e,this.finalize(t,new a.FunctionExpression(null,i.params,n,!0))},t.prototype.isStartOfExpression=function(){var t=!0,e=this.lookahead.value;switch(this.lookahead.type){case 7:t="["===e||"("===e||"{"===e||"+"===e||"-"===e||"!"===e||"~"===e||"++"===e||"--"===e||"/"===e||"/="===e;break;case 4:t="class"===e||"delete"===e||"function"===e||"let"===e||"new"===e||"super"===e||"this"===e||"typeof"===e||"void"===e||"yield"===e}return t},t.prototype.parseYieldExpression=function(){var t=this.createNode();this.expectKeyword("yield");var e=null,i=!1;if(!this.hasLineTerminator){var n=this.context.allowYield;this.context.allowYield=!1,(i=this.match("*"))?(this.nextToken(),e=this.parseAssignmentExpression()):this.isStartOfExpression()&&(e=this.parseAssignmentExpression()),this.context.allowYield=n}return this.finalize(t,new a.YieldExpression(e,i))},t.prototype.parseClassElement=function(t){var e=this.lookahead,i=this.createNode(),n="",r=null,o=null,u=!1,h=!1,c=!1,l=!1;if(this.match("*"))this.nextToken();else 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+
+/**
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strict';\n\nvar YAMLException = require('./exception');\n\nvar TYPE_CONSTRUCTOR_OPTIONS = [\n 'kind',\n 'resolve',\n 'construct',\n 'instanceOf',\n 'predicate',\n 'represent',\n 'defaultStyle',\n 'styleAliases'\n];\n\nvar YAML_NODE_KINDS = [\n 'scalar',\n 'sequence',\n 'mapping'\n];\n\nfunction compileStyleAliases(map) {\n var result = {};\n\n if (map !== null) {\n Object.keys(map).forEach(function (style) {\n map[style].forEach(function (alias) {\n result[String(alias)] = style;\n });\n });\n }\n\n return result;\n}\n\nfunction Type(tag, options) {\n options = options || {};\n\n Object.keys(options).forEach(function (name) {\n if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {\n throw new YAMLException('Unknown option \"' + name + '\" is met in definition of \"' + tag + '\" YAML type.');\n }\n });\n\n // TODO: Add tag format check.\n this.tag = tag;\n this.kind = options['kind'] || null;\n this.resolve = options['resolve'] || function () { return true; };\n this.construct = options['construct'] || function (data) { return data; };\n this.instanceOf = options['instanceOf'] || null;\n this.predicate = options['predicate'] || null;\n this.represent = options['represent'] || null;\n this.defaultStyle = options['defaultStyle'] || null;\n this.styleAliases = compileStyleAliases(options['styleAliases'] || null);\n\n if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {\n throw new YAMLException('Unknown kind \"' + this.kind + '\" is specified for \"' + tag + '\" YAML type.');\n }\n}\n\nmodule.exports = Type;\n","'use strict';\n\n\nfunction isNothing(subject) {\n return (typeof subject === 'undefined') || (subject === null);\n}\n\n\nfunction isObject(subject) {\n return (typeof subject === 'object') && (subject !== null);\n}\n\n\nfunction toArray(sequence) {\n if (Array.isArray(sequence)) return sequence;\n else if (isNothing(sequence)) return [];\n\n return [ sequence ];\n}\n\n\nfunction extend(target, source) {\n var index, length, key, sourceKeys;\n\n if (source) {\n sourceKeys = Object.keys(source);\n\n for (index = 0, length = sourceKeys.length; index < length; index += 1) {\n key = sourceKeys[index];\n target[key] = source[key];\n }\n }\n\n return target;\n}\n\n\nfunction repeat(string, count) {\n var result = '', cycle;\n\n for (cycle = 0; cycle < count; cycle += 1) {\n result += string;\n }\n\n return result;\n}\n\n\nfunction isNegativeZero(number) {\n return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);\n}\n\n\nmodule.exports.isNothing = isNothing;\nmodule.exports.isObject = isObject;\nmodule.exports.toArray = toArray;\nmodule.exports.repeat = repeat;\nmodule.exports.isNegativeZero = isNegativeZero;\nmodule.exports.extend = extend;\n","'use strict';\n\n/*eslint-disable max-len*/\n\nvar common = require('./common');\nvar YAMLException = require('./exception');\nvar Type = require('./type');\n\n\nfunction compileList(schema, name, result) {\n var exclude = [];\n\n schema.include.forEach(function (includedSchema) {\n result = compileList(includedSchema, name, result);\n });\n\n schema[name].forEach(function (currentType) {\n result.forEach(function (previousType, previousIndex) {\n if (previousType.tag === currentType.tag && previousType.kind === currentType.kind) {\n exclude.push(previousIndex);\n }\n });\n\n result.push(currentType);\n });\n\n return result.filter(function (type, index) {\n return exclude.indexOf(index) === -1;\n });\n}\n\n\nfunction compileMap(/* lists... */) {\n var result = {\n scalar: {},\n sequence: {},\n mapping: {},\n fallback: {}\n }, index, length;\n\n function collectType(type) {\n result[type.kind][type.tag] = result['fallback'][type.tag] = type;\n }\n\n for (index = 0, length = arguments.length; index < length; index += 1) {\n arguments[index].forEach(collectType);\n }\n return result;\n}\n\n\nfunction Schema(definition) {\n this.include = definition.include || [];\n this.implicit = definition.implicit || [];\n this.explicit = definition.explicit || [];\n\n this.implicit.forEach(function (type) {\n if (type.loadKind && type.loadKind !== 'scalar') {\n throw new YAMLException('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');\n }\n });\n\n this.compiledImplicit = compileList(this, 'implicit', []);\n this.compiledExplicit = compileList(this, 'explicit', []);\n this.compiledTypeMap = compileMap(this.compiledImplicit, this.compiledExplicit);\n}\n\n\nSchema.DEFAULT = null;\n\n\nSchema.create = function createSchema() {\n var schemas, types;\n\n switch (arguments.length) {\n case 1:\n schemas = Schema.DEFAULT;\n types = arguments[0];\n break;\n\n case 2:\n schemas = arguments[0];\n types = arguments[1];\n break;\n\n default:\n throw new YAMLException('Wrong number of arguments for Schema.create function');\n }\n\n schemas = common.toArray(schemas);\n types = common.toArray(types);\n\n if (!schemas.every(function (schema) { return schema instanceof Schema; })) {\n throw new YAMLException('Specified list of super schemas (or a single Schema object) contains a non-Schema object.');\n }\n\n if (!types.every(function (type) { return type instanceof Type; })) {\n throw new YAMLException('Specified list of YAML types (or a single Type object) contains a non-Type object.');\n }\n\n return new Schema({\n include: schemas,\n explicit: types\n });\n};\n\n\nmodule.exports = Schema;\n","// YAML error class. http://stackoverflow.com/questions/8458984\n//\n'use strict';\n\nfunction YAMLException(reason, mark) {\n // Super constructor\n Error.call(this);\n\n this.name = 'YAMLException';\n this.reason = reason;\n this.mark = mark;\n this.message = (this.reason || '(unknown reason)') + (this.mark ? ' ' + this.mark.toString() : '');\n\n // Include stack trace in error object\n if (Error.captureStackTrace) {\n // Chrome and NodeJS\n Error.captureStackTrace(this, this.constructor);\n } else {\n // FF, IE 10+ and Safari 6+. Fallback for others\n this.stack = (new Error()).stack || '';\n }\n}\n\n\n// Inherit from Error\nYAMLException.prototype = Object.create(Error.prototype);\nYAMLException.prototype.constructor = YAMLException;\n\n\nYAMLException.prototype.toString = function toString(compact) {\n var result = this.name + ': ';\n\n result += this.reason || '(unknown reason)';\n\n if (!compact && this.mark) {\n result += ' ' + this.mark.toString();\n }\n\n return result;\n};\n\n\nmodule.exports = YAMLException;\n","// JS-YAML's default schema for `safeLoad` function.\n// It is not described in the YAML specification.\n//\n// This schema is based on standard YAML's Core schema and includes most of\n// extra types described at YAML tag repository. (http://yaml.org/type/)\n\n\n'use strict';\n\n\nvar Schema = require('../schema');\n\n\nmodule.exports = new Schema({\n include: [\n require('./core')\n ],\n implicit: [\n require('../type/timestamp'),\n require('../type/merge')\n ],\n explicit: [\n require('../type/binary'),\n require('../type/omap'),\n require('../type/pairs'),\n require('../type/set')\n ]\n});\n","// JS-YAML's default schema for `load` function.\n// It is not described in the YAML specification.\n//\n// This schema is based on JS-YAML's default safe schema and includes\n// JavaScript-specific types: !!js/undefined, !!js/regexp and !!js/function.\n//\n// Also this schema is used as default base schema at `Schema.create` function.\n\n\n'use strict';\n\n\nvar Schema = require('../schema');\n\n\nmodule.exports = Schema.DEFAULT = new Schema({\n include: [\n require('./default_safe')\n ],\n explicit: [\n require('../type/js/undefined'),\n require('../type/js/regexp'),\n require('../type/js/function')\n ]\n});\n","// Standard YAML's Failsafe schema.\n// http://www.yaml.org/spec/1.2/spec.html#id2802346\n\n\n'use strict';\n\n\nvar Schema = require('../schema');\n\n\nmodule.exports = new Schema({\n explicit: [\n require('../type/str'),\n require('../type/seq'),\n require('../type/map')\n ]\n});\n","export default function addMethods(worker, methods) {\n\tlet c = 0;\n\tlet callbacks = {};\n\tworker.addEventListener('message', (e) => {\n\t\tlet d = e.data;\n\t\tif (d.type!=='RPC') return;\n\t\tif (d.id) {\n\t\t\tlet f = callbacks[d.id];\n\t\t\tif (f) {\n\t\t\t\tdelete callbacks[d.id];\n\t\t\t\tif (d.error) {\n\t\t\t\t\tf[1](Object.assign(Error(d.error.message), d.error));\n\t\t\t\t}\n\t\t\t\telse {\n\t\t\t\t\tf[0](d.result);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\telse {\n\t\t\tlet evt = document.createEvent('Event');\n\t\t\tevt.initEvent(d.method, false, false);\n\t\t\tevt.data = d.params;\n\t\t\tworker.dispatchEvent(evt);\n\t\t}\n\t});\n\tmethods.forEach( method => {\n\t\tworker[method] = (...params) => new Promise( (a, b) => {\n\t\t\tlet id = ++c;\n\t\t\tcallbacks[id] = [a, b];\n\t\t\tworker.postMessage({ type: 'RPC', id, method, params });\n\t\t});\n\t});\n}\n","// Standard YAML's Core schema.\n// http://www.yaml.org/spec/1.2/spec.html#id2804923\n//\n// NOTE: JS-YAML does not support schema-specific tag resolution restrictions.\n// So, Core schema has no distinctions from JSON schema is JS-YAML.\n\n\n'use strict';\n\n\nvar Schema = require('../schema');\n\n\nmodule.exports = new Schema({\n include: [\n require('./json')\n ]\n});\n","// Standard YAML's JSON schema.\n// http://www.yaml.org/spec/1.2/spec.html#id2803231\n//\n// NOTE: JS-YAML does not support schema-specific tag resolution restrictions.\n// So, this schema is not such strict as defined in the YAML specification.\n// It allows numbers in binary notaion, use `Null` and `NULL` as `null`, etc.\n\n\n'use strict';\n\n\nvar Schema = require('../schema');\n\n\nmodule.exports = new Schema({\n include: [\n require('./failsafe')\n ],\n implicit: [\n require('../type/null'),\n require('../type/bool'),\n require('../type/int'),\n require('../type/float')\n ]\n});\n","// Copyright 2014 Google Inc. All rights reserved.\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n// http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n\n!function(a,b){var c={},d={},e={};!function(a,b){function c(a){if(\"number\"==typeof a)return a;var b={};for(var c in a)b[c]=a[c];return b}function d(){this._delay=0,this._endDelay=0,this._fill=\"none\",this._iterationStart=0,this._iterations=1,this._duration=0,this._playbackRate=1,this._direction=\"normal\",this._easing=\"linear\",this._easingFunction=x}function e(){return a.isDeprecated(\"Invalid timing inputs\",\"2016-03-02\",\"TypeError exceptions will be thrown instead.\",!0)}function f(b,c,e){var f=new d;return c&&(f.fill=\"both\",f.duration=\"auto\"),\"number\"!=typeof b||isNaN(b)?void 0!==b&&Object.getOwnPropertyNames(b).forEach(function(c){if(\"auto\"!=b[c]){if((\"number\"==typeof f[c]||\"duration\"==c)&&(\"number\"!=typeof b[c]||isNaN(b[c])))return;if(\"fill\"==c&&-1==v.indexOf(b[c]))return;if(\"direction\"==c&&-1==w.indexOf(b[c]))return;if(\"playbackRate\"==c&&1!==b[c]&&a.isDeprecated(\"AnimationEffectTiming.playbackRate\",\"2014-11-28\",\"Use Animation.playbackRate instead.\"))return;f[c]=b[c]}}):f.duration=b,f}function g(a){return\"number\"==typeof a&&(a=isNaN(a)?{duration:0}:{duration:a}),a}function h(b,c){return b=a.numericTimingToObject(b),f(b,c)}function i(a,b,c,d){return a<0||a>1||c<0||c>1?x:function(e){function f(a,b,c){return 3*a*(1-c)*(1-c)*c+3*b*(1-c)*c*c+c*c*c}if(e<=0){var g=0;return a>0?g=b/a:!b&&c>0&&(g=d/c),g*e}if(e>=1){var h=0;return c<1?h=(d-1)/(c-1):1==c&&a<1&&(h=(b-1)/(a-1)),1+h*(e-1)}for(var i=0,j=1;i=1)return 1;var d=1/a;return(c+=b*d)-c%d}}function k(a){C||(C=document.createElement(\"div\").style),C.animationTimingFunction=\"\",C.animationTimingFunction=a;var b=C.animationTimingFunction;if(\"\"==b&&e())throw new TypeError(a+\" is not a valid value for easing\");return b}function l(a){if(\"linear\"==a)return x;var b=E.exec(a);if(b)return i.apply(this,b.slice(1).map(Number));var c=F.exec(a);return c?j(Number(c[1]),{start:y,middle:z,end:A}[c[2]]):B[a]||x}function m(a){return Math.abs(n(a)/a.playbackRate)}function n(a){return 0===a.duration||0===a.iterations?0:a.duration*a.iterations}function o(a,b,c){if(null==b)return G;var d=c.delay+a+c.endDelay;return b=Math.min(c.delay+a,d)?I:J}function p(a,b,c,d,e){switch(d){case H:return\"backwards\"==b||\"both\"==b?0:null;case J:return c-e;case I:return\"forwards\"==b||\"both\"==b?a:null;case G:return null}}function q(a,b,c,d,e){var f=e;return 0===a?b!==H&&(f+=c):f+=d/a,f}function r(a,b,c,d,e,f){var g=a===1/0?b%1:a%1;return 0!==g||c!==I||0===d||0===e&&0!==f||(g=1),g}function s(a,b,c,d){return a===I&&b===1/0?1/0:1===c?Math.floor(d)-1:Math.floor(d)}function t(a,b,c){var d=a;if(\"normal\"!==a&&\"reverse\"!==a){var e=b;\"alternate-reverse\"===a&&(e+=1),d=\"normal\",e!==1/0&&e%2!=0&&(d=\"reverse\")}return\"normal\"===d?c:1-c}function u(a,b,c){var d=o(a,b,c),e=p(a,c.fill,b,d,c.delay);if(null===e)return null;var f=q(c.duration,d,c.iterations,e,c.iterationStart),g=r(f,c.iterationStart,d,c.iterations,e,c.duration),h=s(d,c.iterations,g,f),i=t(c.direction,h,g);return c._easingFunction(i)}var v=\"backwards|forwards|both|none\".split(\"|\"),w=\"reverse|alternate|alternate-reverse\".split(\"|\"),x=function(a){return a};d.prototype={_setMember:function(b,c){this[\"_\"+b]=c,this._effect&&(this._effect._timingInput[b]=c,this._effect._timing=a.normalizeTimingInput(this._effect._timingInput),this._effect.activeDuration=a.calculateActiveDuration(this._effect._timing),this._effect._animation&&this._effect._animation._rebuildUnderlyingAnimation())},get playbackRate(){return this._playbackRate},set delay(a){this._setMember(\"delay\",a)},get delay(){return this._delay},set endDelay(a){this._setMember(\"endDelay\",a)},get endDelay(){return this._endDelay},set fill(a){this._setMember(\"fill\",a)},get fill(){return this._fill},set iterationStart(a){if((isNaN(a)||a<0)&&e())throw new TypeError(\"iterationStart must be a non-negative number, received: \"+timing.iterationStart);this._setMember(\"iterationStart\",a)},get iterationStart(){return this._iterationStart},set duration(a){if(\"auto\"!=a&&(isNaN(a)||a<0)&&e())throw new TypeError(\"duration must be non-negative or auto, received: \"+a);this._setMember(\"duration\",a)},get duration(){return this._duration},set direction(a){this._setMember(\"direction\",a)},get direction(){return this._direction},set easing(a){this._easingFunction=l(k(a)),this._setMember(\"easing\",a)},get easing(){return this._easing},set iterations(a){if((isNaN(a)||a<0)&&e())throw new TypeError(\"iterations must be non-negative, received: \"+a);this._setMember(\"iterations\",a)},get iterations(){return this._iterations}};var y=1,z=.5,A=0,B={ease:i(.25,.1,.25,1),\"ease-in\":i(.42,0,1,1),\"ease-out\":i(0,0,.58,1),\"ease-in-out\":i(.42,0,.58,1),\"step-start\":j(1,y),\"step-middle\":j(1,z),\"step-end\":j(1,A)},C=null,D=\"\\\\s*(-?\\\\d+\\\\.?\\\\d*|-?\\\\.\\\\d+)\\\\s*\",E=new 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h={background:[\"backgroundImage\",\"backgroundPosition\",\"backgroundSize\",\"backgroundRepeat\",\"backgroundAttachment\",\"backgroundOrigin\",\"backgroundClip\",\"backgroundColor\"],border:[\"borderTopColor\",\"borderTopStyle\",\"borderTopWidth\",\"borderRightColor\",\"borderRightStyle\",\"borderRightWidth\",\"borderBottomColor\",\"borderBottomStyle\",\"borderBottomWidth\",\"borderLeftColor\",\"borderLeftStyle\",\"borderLeftWidth\"],borderBottom:[\"borderBottomWidth\",\"borderBottomStyle\",\"borderBottomColor\"],borderColor:[\"borderTopColor\",\"borderRightColor\",\"borderBottomColor\",\"borderLeftColor\"],borderLeft:[\"borderLeftWidth\",\"borderLeftStyle\",\"borderLeftColor\"],borderRadius:[\"borderTopLeftRadius\",\"borderTopRightRadius\",\"borderBottomRightRadius\",\"borderBottomLeftRadius\"],borderRight:[\"borderRightWidth\",\"borderRightStyle\",\"borderRightColor\"],borderTop:[\"borderTopWidth\",\"borderTopStyle\",\"borderTopColor\"],borderWidth:[\"borderTopWidth\",\"borderRightWidth\",\"borderBottomWidth\",\"borderLeftWidth\"],flex:[\"flexGrow\",\"flexShrink\",\"flexBasis\"],font:[\"fontFamily\",\"fontSize\",\"fontStyle\",\"fontVariant\",\"fontWeight\",\"lineHeight\"],margin:[\"marginTop\",\"marginRight\",\"marginBottom\",\"marginLeft\"],outline:[\"outlineColor\",\"outlineStyle\",\"outlineWidth\"],padding:[\"paddingTop\",\"paddingRight\",\"paddingBottom\",\"paddingLeft\"]},i=document.createElementNS(\"http://www.w3.org/1999/xhtml\",\"div\"),j={thin:\"1px\",medium:\"3px\",thick:\"5px\"},k={borderBottomWidth:j,borderLeftWidth:j,borderRightWidth:j,borderTopWidth:j,fontSize:{\"xx-small\":\"60%\",\"x-small\":\"75%\",small:\"89%\",medium:\"100%\",large:\"120%\",\"x-large\":\"150%\",\"xx-large\":\"200%\"},fontWeight:{normal:\"400\",bold:\"700\"},outlineWidth:j,textShadow:{none:\"0px 0px 0px transparent\"},boxShadow:{none:\"0px 0px 0px 0px transparent\"}};a.convertToArrayForm=f,a.normalizeKeyframes=g}(c),function(a){var b={};a.isDeprecated=function(a,c,d,e){var f=e?\"are\":\"is\",g=new Date,h=new Date(c);return h.setMonth(h.getMonth()+3),!(g=a.applyFrom&&c0?this._totalDuration:0),this._ensureAlive())},get currentTime(){return this._idle||this._currentTimePending?null:this._currentTime},set currentTime(a){a=+a,isNaN(a)||(b.restart(),this._paused||null==this._startTime||(this._startTime=this._timeline.currentTime-a/this._playbackRate),this._currentTimePending=!1,this._currentTime!=a&&(this._idle&&(this._idle=!1,this._paused=!0),this._tickCurrentTime(a,!0),b.applyDirtiedAnimation(this)))},get startTime(){return this._startTime},set startTime(a){a=+a,isNaN(a)||this._paused||this._idle||(this._startTime=a,this._tickCurrentTime((this._timeline.currentTime-this._startTime)*this.playbackRate),b.applyDirtiedAnimation(this))},get playbackRate(){return this._playbackRate},set playbackRate(a){if(a!=this._playbackRate){var c=this.currentTime;this._playbackRate=a,this._startTime=null,\"paused\"!=this.playState&&\"idle\"!=this.playState&&(this._finishedFlag=!1,this._idle=!1,this._ensureAlive(),b.applyDirtiedAnimation(this)),null!=c&&(this.currentTime=c)}},get _isFinished(){return!this._idle&&(this._playbackRate>0&&this._currentTime>=this._totalDuration||this._playbackRate<0&&this._currentTime<=0)},get _totalDuration(){return this._effect._totalDuration},get playState(){return this._idle?\"idle\":null==this._startTime&&!this._paused&&0!=this.playbackRate||this._currentTimePending?\"pending\":this._paused?\"paused\":this._isFinished?\"finished\":\"running\"},_rewind:function(){if(this._playbackRate>=0)this._currentTime=0;else{if(!(this._totalDuration<1/0))throw new DOMException(\"Unable to rewind negative playback rate animation with infinite duration\",\"InvalidStateError\");this._currentTime=this._totalDuration}},play:function(){this._paused=!1,(this._isFinished||this._idle)&&(this._rewind(),this._startTime=null),this._finishedFlag=!1,this._idle=!1,this._ensureAlive(),b.applyDirtiedAnimation(this)},pause:function(){this._isFinished||this._paused||this._idle?this._idle&&(this._rewind(),this._idle=!1):this._currentTimePending=!0,this._startTime=null,this._paused=!0},finish:function(){this._idle||(this.currentTime=this._playbackRate>0?this._totalDuration:0,this._startTime=this._totalDuration-this.currentTime,this._currentTimePending=!1,b.applyDirtiedAnimation(this))},cancel:function(){this._inEffect&&(this._inEffect=!1,this._idle=!0,this._paused=!1,this._isFinished=!0,this._finishedFlag=!0,this._currentTime=0,this._startTime=null,this._effect._update(null),b.applyDirtiedAnimation(this))},reverse:function(){this.playbackRate*=-1,this.play()},addEventListener:function(a,b){\"function\"==typeof b&&\"finish\"==a&&this._finishHandlers.push(b)},removeEventListener:function(a,b){if(\"finish\"==a){var c=this._finishHandlers.indexOf(b);c>=0&&this._finishHandlers.splice(c,1)}},_fireEvents:function(a){if(this._isFinished){if(!this._finishedFlag){var b=new d(this,this._currentTime,a),c=this._finishHandlers.concat(this.onfinish?[this.onfinish]:[]);setTimeout(function(){c.forEach(function(a){a.call(b.target,b)})},0),this._finishedFlag=!0}}else this._finishedFlag=!1},_tick:function(a,b){this._idle||this._paused||(null==this._startTime?b&&(this.startTime=a-this._currentTime/this.playbackRate):this._isFinished||this._tickCurrentTime((a-this._startTime)*this.playbackRate)),b&&(this._currentTimePending=!1,this._fireEvents(a))},get _needsTick(){return this.playState in{pending:1,running:1}||!this._finishedFlag},_targetAnimations:function(){var a=this._effect._target;return a._activeAnimations||(a._activeAnimations=[]),a._activeAnimations},_markTarget:function(){var 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i=c[2].split(\",\"),j=h[0];if(j.length=0&&this._cancelHandlers.splice(c,1)}else i.call(this,a,b)},f}}}(),function(a){var b=document.documentElement,c=null,d=!1;try{var e=getComputedStyle(b).getPropertyValue(\"opacity\"),f=\"0\"==e?\"1\":\"0\";c=b.animate({opacity:[f,f]},{duration:1}),c.currentTime=0,d=getComputedStyle(b).getPropertyValue(\"opacity\")==f}catch(a){}finally{c&&c.cancel()}if(!d){var g=window.Element.prototype.animate;window.Element.prototype.animate=function(b,c){return window.Symbol&&Symbol.iterator&&Array.prototype.from&&b[Symbol.iterator]&&(b=Array.from(b)),Array.isArray(b)||null===b||(b=a.convertToArrayForm(b)),g.call(this,b,c)}}}(c),function(a,b,c){function d(a){var c=b.timeline;c.currentTime=a,c._discardAnimations(),0==c._animations.length?f=!1:requestAnimationFrame(d)}var e=window.requestAnimationFrame;window.requestAnimationFrame=function(a){return e(function(c){b.timeline._updateAnimationsPromises(),a(c),b.timeline._updateAnimationsPromises()})},b.AnimationTimeline=function(){this._animations=[],this.currentTime=void 0},b.AnimationTimeline.prototype={getAnimations:function(){return this._discardAnimations(),this._animations.slice()},_updateAnimationsPromises:function(){b.animationsWithPromises=b.animationsWithPromises.filter(function(a){return a._updatePromises()})},_discardAnimations:function(){this._updateAnimationsPromises(),this._animations=this._animations.filter(function(a){return\"finished\"!=a.playState&&\"idle\"!=a.playState})},_play:function(a){var c=new b.Animation(a,this);return this._animations.push(c),b.restartWebAnimationsNextTick(),c._updatePromises(),c._animation.play(),c._updatePromises(),c},play:function(a){return a&&a.remove(),this._play(a)}};var f=!1;b.restartWebAnimationsNextTick=function(){f||(f=!0,requestAnimationFrame(d))};var g=new b.AnimationTimeline;b.timeline=g;try{Object.defineProperty(window.document,\"timeline\",{configurable:!0,get:function(){return g}})}catch(a){}try{window.document.timeline=g}catch(a){}}(0,e),function(a,b,c){b.animationsWithPromises=[],b.Animation=function(b,c){if(this.id=\"\",b&&b._id&&(this.id=b._id),this.effect=b,b&&(b._animation=this),!c)throw new Error(\"Animation with null timeline is not supported\");this._timeline=c,this._sequenceNumber=a.sequenceNumber++,this._holdTime=0,this._paused=!1,this._isGroup=!1,this._animation=null,this._childAnimations=[],this._callback=null,this._oldPlayState=\"idle\",this._rebuildUnderlyingAnimation(),this._animation.cancel(),this._updatePromises()},b.Animation.prototype={_updatePromises:function(){var a=this._oldPlayState,b=this.playState;return this._readyPromise&&b!==a&&(\"idle\"==b?(this._rejectReadyPromise(),this._readyPromise=void 0):\"pending\"==a?this._resolveReadyPromise():\"pending\"==b&&(this._readyPromise=void 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The focused item is highlighted, and the selected item has bolded text.\n\n \n Item 1 \n Item 2 \n \n\nAn initial selection can be specified with the `selected` attribute.\n\n \n Item 1 \n Item 2 \n \n\nMake a multi-select listbox with the `multi` attribute. Items in a multi-select\nlistbox can be deselected, and multiple item can be selected.\n\n \n Item 1 \n Item 2 \n \n\n### Styling\n\nThe following custom properties and mixins are available for styling:\n\nCustom property | Description | Default\n----------------|-------------|----------\n`--paper-listbox-background-color` | Menu background color |\n`--primary-background-color`\n`--paper-listbox-color` | Menu foreground color |\n`--primary-text-color`\n`--paper-listbox` | Mixin applied to the listbox | `{}`\n\n### Accessibility\n\n`` has `role=\"listbox\"` by default. A multi-select listbox will\nalso have `aria-multiselectable` set. It implements key bindings to navigate\nthrough the listbox with the up and down arrow keys, esc to exit the listbox,\nand enter to activate a listbox item. Typing the first letter of a listbox item\nwill also focus it.\n\n@group Paper Elements\n@element paper-listbox\n@demo demo/index.html\n*/\nPolymer({\n _template: html`\n \n\n
') + ' ';\n },\n\n _valueForMirror: function() {\n var input = this.textarea;\n if (!input) {\n return;\n }\n this.tokens = (input && input.value) ? input.value.replace(/&/gm, '&')\n .replace(/\"/gm, '"')\n .replace(/'/gm, ''')\n .replace(//gm, '>')\n .split('\\n') :\n [''];\n return this._constrain(this.tokens);\n },\n\n _updateCached: function() {\n this.$.mirror.innerHTML = this._constrain(this.tokens);\n }\n});\n","'use strict';\n\n\nvar yaml = require('./lib/js-yaml.js');\n\n\nmodule.exports = yaml;\n","'use strict';\n\n\nvar loader = require('./js-yaml/loader');\nvar dumper = require('./js-yaml/dumper');\n\n\nfunction deprecated(name) {\n return function () {\n throw new Error('Function ' + name + ' is deprecated and cannot be used.');\n };\n}\n\n\nmodule.exports.Type = require('./js-yaml/type');\nmodule.exports.Schema = require('./js-yaml/schema');\nmodule.exports.FAILSAFE_SCHEMA = require('./js-yaml/schema/failsafe');\nmodule.exports.JSON_SCHEMA = require('./js-yaml/schema/json');\nmodule.exports.CORE_SCHEMA = require('./js-yaml/schema/core');\nmodule.exports.DEFAULT_SAFE_SCHEMA = require('./js-yaml/schema/default_safe');\nmodule.exports.DEFAULT_FULL_SCHEMA = require('./js-yaml/schema/default_full');\nmodule.exports.load = loader.load;\nmodule.exports.loadAll = loader.loadAll;\nmodule.exports.safeLoad = loader.safeLoad;\nmodule.exports.safeLoadAll = loader.safeLoadAll;\nmodule.exports.dump = dumper.dump;\nmodule.exports.safeDump = dumper.safeDump;\nmodule.exports.YAMLException = require('./js-yaml/exception');\n\n// Deprecated schema names from JS-YAML 2.0.x\nmodule.exports.MINIMAL_SCHEMA = require('./js-yaml/schema/failsafe');\nmodule.exports.SAFE_SCHEMA = require('./js-yaml/schema/default_safe');\nmodule.exports.DEFAULT_SCHEMA = require('./js-yaml/schema/default_full');\n\n// Deprecated functions from JS-YAML 1.x.x\nmodule.exports.scan = deprecated('scan');\nmodule.exports.parse = deprecated('parse');\nmodule.exports.compose = deprecated('compose');\nmodule.exports.addConstructor = deprecated('addConstructor');\n","'use strict';\n\n/*eslint-disable max-len,no-use-before-define*/\n\nvar common = require('./common');\nvar YAMLException = require('./exception');\nvar Mark = require('./mark');\nvar DEFAULT_SAFE_SCHEMA = require('./schema/default_safe');\nvar DEFAULT_FULL_SCHEMA = require('./schema/default_full');\n\n\nvar _hasOwnProperty = Object.prototype.hasOwnProperty;\n\n\nvar CONTEXT_FLOW_IN = 1;\nvar CONTEXT_FLOW_OUT = 2;\nvar CONTEXT_BLOCK_IN = 3;\nvar CONTEXT_BLOCK_OUT = 4;\n\n\nvar CHOMPING_CLIP = 1;\nvar CHOMPING_STRIP = 2;\nvar CHOMPING_KEEP = 3;\n\n\nvar PATTERN_NON_PRINTABLE = /[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F\\x7F-\\x84\\x86-\\x9F\\uFFFE\\uFFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF]/;\nvar PATTERN_NON_ASCII_LINE_BREAKS = /[\\x85\\u2028\\u2029]/;\nvar PATTERN_FLOW_INDICATORS = /[,\\[\\]\\{\\}]/;\nvar PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\\-]+!)$/i;\nvar PATTERN_TAG_URI = /^(?:!|[^,\\[\\]\\{\\}])(?:%[0-9a-f]{2}|[0-9a-z\\-#;\\/\\?:@&=\\+\\$,_\\.!~\\*'\\(\\)\\[\\]])*$/i;\n\n\nfunction _class(obj) { return Object.prototype.toString.call(obj); }\n\nfunction is_EOL(c) {\n return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);\n}\n\nfunction is_WHITE_SPACE(c) {\n return (c === 0x09/* Tab */) || (c === 0x20/* Space */);\n}\n\nfunction is_WS_OR_EOL(c) {\n return (c === 0x09/* Tab */) ||\n (c === 0x20/* Space */) ||\n (c === 0x0A/* LF */) ||\n (c === 0x0D/* CR */);\n}\n\nfunction is_FLOW_INDICATOR(c) {\n return c === 0x2C/* , */ ||\n c === 0x5B/* [ */ ||\n c === 0x5D/* ] */ ||\n c === 0x7B/* { */ ||\n c === 0x7D/* } */;\n}\n\nfunction fromHexCode(c) {\n var lc;\n\n if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {\n return c - 0x30;\n }\n\n /*eslint-disable no-bitwise*/\n lc = c | 0x20;\n\n if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {\n return lc - 0x61 + 10;\n }\n\n return -1;\n}\n\nfunction escapedHexLen(c) {\n if (c === 0x78/* x */) { return 2; }\n if (c === 0x75/* u */) { return 4; }\n if (c === 0x55/* U */) { return 8; }\n return 0;\n}\n\nfunction fromDecimalCode(c) {\n if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {\n return c - 0x30;\n }\n\n return -1;\n}\n\nfunction simpleEscapeSequence(c) {\n /* eslint-disable indent */\n return (c === 0x30/* 0 */) ? '\\x00' :\n (c === 0x61/* a */) ? '\\x07' :\n (c === 0x62/* b */) ? '\\x08' :\n (c === 0x74/* t */) ? '\\x09' :\n (c === 0x09/* Tab */) ? '\\x09' :\n (c === 0x6E/* n */) ? '\\x0A' :\n (c === 0x76/* v */) ? '\\x0B' :\n (c === 0x66/* f */) ? '\\x0C' :\n (c === 0x72/* r */) ? '\\x0D' :\n (c === 0x65/* e */) ? '\\x1B' :\n (c === 0x20/* Space */) ? ' ' :\n (c === 0x22/* \" */) ? '\\x22' :\n (c === 0x2F/* / */) ? '/' :\n (c === 0x5C/* \\ */) ? '\\x5C' :\n (c === 0x4E/* N */) ? '\\x85' :\n (c === 0x5F/* _ */) ? '\\xA0' :\n (c === 0x4C/* L */) ? '\\u2028' :\n (c === 0x50/* P */) ? '\\u2029' : '';\n}\n\nfunction charFromCodepoint(c) {\n if (c <= 0xFFFF) {\n return String.fromCharCode(c);\n }\n // Encode UTF-16 surrogate pair\n // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF\n return String.fromCharCode(\n ((c - 0x010000) >> 10) + 0xD800,\n ((c - 0x010000) & 0x03FF) + 0xDC00\n );\n}\n\nvar simpleEscapeCheck = new Array(256); // integer, for fast access\nvar simpleEscapeMap = new Array(256);\nfor (var i = 0; i < 256; i++) {\n simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;\n simpleEscapeMap[i] = simpleEscapeSequence(i);\n}\n\n\nfunction State(input, options) {\n this.input = input;\n\n this.filename = options['filename'] || null;\n this.schema = options['schema'] || DEFAULT_FULL_SCHEMA;\n this.onWarning = options['onWarning'] || null;\n this.legacy = options['legacy'] || false;\n this.json = options['json'] || false;\n this.listener = options['listener'] || null;\n\n this.implicitTypes = this.schema.compiledImplicit;\n this.typeMap = this.schema.compiledTypeMap;\n\n this.length = input.length;\n this.position = 0;\n this.line = 0;\n this.lineStart = 0;\n this.lineIndent = 0;\n\n this.documents = [];\n\n /*\n this.version;\n this.checkLineBreaks;\n this.tagMap;\n this.anchorMap;\n this.tag;\n this.anchor;\n this.kind;\n this.result;*/\n\n}\n\n\nfunction generateError(state, message) {\n return new YAMLException(\n message,\n new Mark(state.filename, state.input, state.position, state.line, (state.position - state.lineStart)));\n}\n\nfunction throwError(state, message) {\n throw generateError(state, message);\n}\n\nfunction throwWarning(state, message) {\n if (state.onWarning) {\n state.onWarning.call(null, generateError(state, message));\n }\n}\n\n\nvar directiveHandlers = {\n\n YAML: function handleYamlDirective(state, name, args) {\n\n var match, major, minor;\n\n if (state.version !== null) {\n throwError(state, 'duplication of %YAML directive');\n }\n\n if (args.length !== 1) {\n throwError(state, 'YAML directive accepts exactly one argument');\n }\n\n match = /^([0-9]+)\\.([0-9]+)$/.exec(args[0]);\n\n if (match === null) {\n throwError(state, 'ill-formed argument of the YAML directive');\n }\n\n major = parseInt(match[1], 10);\n minor = parseInt(match[2], 10);\n\n if (major !== 1) {\n throwError(state, 'unacceptable YAML version of the document');\n }\n\n state.version = args[0];\n state.checkLineBreaks = (minor < 2);\n\n if (minor !== 1 && minor !== 2) {\n throwWarning(state, 'unsupported YAML version of the document');\n }\n },\n\n TAG: function handleTagDirective(state, name, args) {\n\n var handle, prefix;\n\n if (args.length !== 2) {\n throwError(state, 'TAG directive accepts exactly two arguments');\n }\n\n handle = args[0];\n prefix = args[1];\n\n if (!PATTERN_TAG_HANDLE.test(handle)) {\n throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');\n }\n\n if (_hasOwnProperty.call(state.tagMap, handle)) {\n throwError(state, 'there is a previously declared suffix for \"' + handle + '\" tag handle');\n }\n\n if (!PATTERN_TAG_URI.test(prefix)) {\n throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');\n }\n\n state.tagMap[handle] = prefix;\n }\n};\n\n\nfunction captureSegment(state, start, end, checkJson) {\n var _position, _length, _character, _result;\n\n if (start < end) {\n _result = state.input.slice(start, end);\n\n if (checkJson) {\n for (_position = 0, _length = _result.length; _position < _length; _position += 1) {\n _character = _result.charCodeAt(_position);\n if (!(_character === 0x09 ||\n (0x20 <= _character && _character <= 0x10FFFF))) {\n throwError(state, 'expected valid JSON character');\n }\n }\n } else if (PATTERN_NON_PRINTABLE.test(_result)) {\n throwError(state, 'the stream contains non-printable characters');\n }\n\n state.result += _result;\n }\n}\n\nfunction mergeMappings(state, destination, source, overridableKeys) {\n var sourceKeys, key, index, quantity;\n\n if (!common.isObject(source)) {\n throwError(state, 'cannot merge mappings; the provided source object is unacceptable');\n }\n\n sourceKeys = Object.keys(source);\n\n for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {\n key = sourceKeys[index];\n\n if (!_hasOwnProperty.call(destination, key)) {\n destination[key] = source[key];\n overridableKeys[key] = true;\n }\n }\n}\n\nfunction storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, startLine, startPos) {\n var index, quantity;\n\n // The output is a plain object here, so keys can only be strings.\n // We need to convert keyNode to a string, but doing so can hang the process\n // (deeply nested arrays that explode exponentially using aliases).\n if (Array.isArray(keyNode)) {\n keyNode = Array.prototype.slice.call(keyNode);\n\n for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {\n if (Array.isArray(keyNode[index])) {\n throwError(state, 'nested arrays are not supported inside keys');\n }\n\n if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {\n keyNode[index] = '[object Object]';\n }\n }\n }\n\n // Avoid code execution in load() via toString property\n // (still use its own toString for arrays, timestamps,\n // and whatever user schema extensions happen to have @@toStringTag)\n if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {\n keyNode = '[object Object]';\n }\n\n\n keyNode = String(keyNode);\n\n if (_result === null) {\n _result = {};\n }\n\n if (keyTag === 'tag:yaml.org,2002:merge') {\n if (Array.isArray(valueNode)) {\n for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {\n mergeMappings(state, _result, valueNode[index], overridableKeys);\n }\n } else {\n mergeMappings(state, _result, valueNode, overridableKeys);\n }\n } else {\n if (!state.json &&\n !_hasOwnProperty.call(overridableKeys, keyNode) &&\n _hasOwnProperty.call(_result, keyNode)) {\n state.line = startLine || state.line;\n state.position = startPos || state.position;\n throwError(state, 'duplicated mapping key');\n }\n _result[keyNode] = valueNode;\n delete overridableKeys[keyNode];\n }\n\n return _result;\n}\n\nfunction readLineBreak(state) {\n var ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x0A/* LF */) {\n state.position++;\n } else if (ch === 0x0D/* CR */) {\n state.position++;\n if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {\n state.position++;\n }\n } else {\n throwError(state, 'a line break is expected');\n }\n\n state.line += 1;\n state.lineStart = state.position;\n}\n\nfunction skipSeparationSpace(state, allowComments, checkIndent) {\n var lineBreaks = 0,\n ch = state.input.charCodeAt(state.position);\n\n while (ch !== 0) {\n while (is_WHITE_SPACE(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (allowComments && ch === 0x23/* # */) {\n do {\n ch = state.input.charCodeAt(++state.position);\n } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);\n }\n\n if (is_EOL(ch)) {\n readLineBreak(state);\n\n ch = state.input.charCodeAt(state.position);\n lineBreaks++;\n state.lineIndent = 0;\n\n while (ch === 0x20/* Space */) {\n state.lineIndent++;\n ch = state.input.charCodeAt(++state.position);\n }\n } else {\n break;\n }\n }\n\n if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {\n throwWarning(state, 'deficient indentation');\n }\n\n return lineBreaks;\n}\n\nfunction testDocumentSeparator(state) {\n var _position = state.position,\n ch;\n\n ch = state.input.charCodeAt(_position);\n\n // Condition state.position === state.lineStart is tested\n // in parent on each call, for efficiency. No needs to test here again.\n if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&\n ch === state.input.charCodeAt(_position + 1) &&\n ch === state.input.charCodeAt(_position + 2)) {\n\n _position += 3;\n\n ch = state.input.charCodeAt(_position);\n\n if (ch === 0 || is_WS_OR_EOL(ch)) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction writeFoldedLines(state, count) {\n if (count === 1) {\n state.result += ' ';\n } else if (count > 1) {\n state.result += common.repeat('\\n', count - 1);\n }\n}\n\n\nfunction readPlainScalar(state, nodeIndent, withinFlowCollection) {\n var preceding,\n following,\n captureStart,\n captureEnd,\n hasPendingContent,\n _line,\n _lineStart,\n _lineIndent,\n _kind = state.kind,\n _result = state.result,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (is_WS_OR_EOL(ch) ||\n is_FLOW_INDICATOR(ch) ||\n ch === 0x23/* # */ ||\n ch === 0x26/* & */ ||\n ch === 0x2A/* * */ ||\n ch === 0x21/* ! */ ||\n ch === 0x7C/* | */ ||\n ch === 0x3E/* > */ ||\n ch === 0x27/* ' */ ||\n ch === 0x22/* \" */ ||\n ch === 0x25/* % */ ||\n ch === 0x40/* @ */ ||\n ch === 0x60/* ` */) {\n return false;\n }\n\n if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {\n following = state.input.charCodeAt(state.position + 1);\n\n if (is_WS_OR_EOL(following) ||\n withinFlowCollection && is_FLOW_INDICATOR(following)) {\n return false;\n }\n }\n\n state.kind = 'scalar';\n state.result = '';\n captureStart = captureEnd = state.position;\n hasPendingContent = false;\n\n while (ch !== 0) {\n if (ch === 0x3A/* : */) {\n following = state.input.charCodeAt(state.position + 1);\n\n if (is_WS_OR_EOL(following) ||\n withinFlowCollection && is_FLOW_INDICATOR(following)) {\n break;\n }\n\n } else if (ch === 0x23/* # */) {\n preceding = state.input.charCodeAt(state.position - 1);\n\n if (is_WS_OR_EOL(preceding)) {\n break;\n }\n\n } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||\n withinFlowCollection && is_FLOW_INDICATOR(ch)) {\n break;\n\n } else if (is_EOL(ch)) {\n _line = state.line;\n _lineStart = state.lineStart;\n _lineIndent = state.lineIndent;\n skipSeparationSpace(state, false, -1);\n\n if (state.lineIndent >= nodeIndent) {\n hasPendingContent = true;\n ch = state.input.charCodeAt(state.position);\n continue;\n } else {\n state.position = captureEnd;\n state.line = _line;\n state.lineStart = _lineStart;\n state.lineIndent = _lineIndent;\n break;\n }\n }\n\n if (hasPendingContent) {\n captureSegment(state, captureStart, captureEnd, false);\n writeFoldedLines(state, state.line - _line);\n captureStart = captureEnd = state.position;\n hasPendingContent = false;\n }\n\n if (!is_WHITE_SPACE(ch)) {\n captureEnd = state.position + 1;\n }\n\n ch = state.input.charCodeAt(++state.position);\n }\n\n captureSegment(state, captureStart, captureEnd, false);\n\n if (state.result) {\n return true;\n }\n\n state.kind = _kind;\n state.result = _result;\n return false;\n}\n\nfunction readSingleQuotedScalar(state, nodeIndent) {\n var ch,\n captureStart, captureEnd;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x27/* ' */) {\n return false;\n }\n\n state.kind = 'scalar';\n state.result = '';\n state.position++;\n captureStart = captureEnd = state.position;\n\n while ((ch = state.input.charCodeAt(state.position)) !== 0) {\n if (ch === 0x27/* ' */) {\n captureSegment(state, captureStart, state.position, true);\n ch = state.input.charCodeAt(++state.position);\n\n if (ch === 0x27/* ' */) {\n captureStart = state.position;\n state.position++;\n captureEnd = state.position;\n } else {\n return true;\n }\n\n } else if (is_EOL(ch)) {\n captureSegment(state, captureStart, captureEnd, true);\n writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));\n captureStart = captureEnd = state.position;\n\n } else if (state.position === state.lineStart && testDocumentSeparator(state)) {\n throwError(state, 'unexpected end of the document within a single quoted scalar');\n\n } else {\n state.position++;\n captureEnd = state.position;\n }\n }\n\n throwError(state, 'unexpected end of the stream within a single quoted scalar');\n}\n\nfunction readDoubleQuotedScalar(state, nodeIndent) {\n var captureStart,\n captureEnd,\n hexLength,\n hexResult,\n tmp,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x22/* \" */) {\n return false;\n }\n\n state.kind = 'scalar';\n state.result = '';\n state.position++;\n captureStart = captureEnd = state.position;\n\n while ((ch = state.input.charCodeAt(state.position)) !== 0) {\n if (ch === 0x22/* \" */) {\n captureSegment(state, captureStart, state.position, true);\n state.position++;\n return true;\n\n } else if (ch === 0x5C/* \\ */) {\n captureSegment(state, captureStart, state.position, true);\n ch = state.input.charCodeAt(++state.position);\n\n if (is_EOL(ch)) {\n skipSeparationSpace(state, false, nodeIndent);\n\n // TODO: rework to inline fn with no type cast?\n } else if (ch < 256 && simpleEscapeCheck[ch]) {\n state.result += simpleEscapeMap[ch];\n state.position++;\n\n } else if ((tmp = escapedHexLen(ch)) > 0) {\n hexLength = tmp;\n hexResult = 0;\n\n for (; hexLength > 0; hexLength--) {\n ch = state.input.charCodeAt(++state.position);\n\n if ((tmp = fromHexCode(ch)) >= 0) {\n hexResult = (hexResult << 4) + tmp;\n\n } else {\n throwError(state, 'expected hexadecimal character');\n }\n }\n\n state.result += charFromCodepoint(hexResult);\n\n state.position++;\n\n } else {\n throwError(state, 'unknown escape sequence');\n }\n\n captureStart = captureEnd = state.position;\n\n } else if (is_EOL(ch)) {\n captureSegment(state, captureStart, captureEnd, true);\n writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));\n captureStart = captureEnd = state.position;\n\n } else if (state.position === state.lineStart && testDocumentSeparator(state)) {\n throwError(state, 'unexpected end of the document within a double quoted scalar');\n\n } else {\n state.position++;\n captureEnd = state.position;\n }\n }\n\n throwError(state, 'unexpected end of the stream within a double quoted scalar');\n}\n\nfunction readFlowCollection(state, nodeIndent) {\n var readNext = true,\n _line,\n _tag = state.tag,\n _result,\n _anchor = state.anchor,\n following,\n terminator,\n isPair,\n isExplicitPair,\n isMapping,\n overridableKeys = {},\n keyNode,\n keyTag,\n valueNode,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x5B/* [ */) {\n terminator = 0x5D;/* ] */\n isMapping = false;\n _result = [];\n } else if (ch === 0x7B/* { */) {\n terminator = 0x7D;/* } */\n isMapping = true;\n _result = {};\n } else {\n return false;\n }\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = _result;\n }\n\n ch = state.input.charCodeAt(++state.position);\n\n while (ch !== 0) {\n skipSeparationSpace(state, true, nodeIndent);\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === terminator) {\n state.position++;\n state.tag = _tag;\n state.anchor = _anchor;\n state.kind = isMapping ? 'mapping' : 'sequence';\n state.result = _result;\n return true;\n } else if (!readNext) {\n throwError(state, 'missed comma between flow collection entries');\n }\n\n keyTag = keyNode = valueNode = null;\n isPair = isExplicitPair = false;\n\n if (ch === 0x3F/* ? */) {\n following = state.input.charCodeAt(state.position + 1);\n\n if (is_WS_OR_EOL(following)) {\n isPair = isExplicitPair = true;\n state.position++;\n skipSeparationSpace(state, true, nodeIndent);\n }\n }\n\n _line = state.line;\n composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);\n keyTag = state.tag;\n keyNode = state.result;\n skipSeparationSpace(state, true, nodeIndent);\n\n ch = state.input.charCodeAt(state.position);\n\n if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {\n isPair = true;\n ch = state.input.charCodeAt(++state.position);\n skipSeparationSpace(state, true, nodeIndent);\n composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);\n valueNode = state.result;\n }\n\n if (isMapping) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode);\n } else if (isPair) {\n _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode));\n } else {\n _result.push(keyNode);\n }\n\n skipSeparationSpace(state, true, nodeIndent);\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x2C/* , */) {\n readNext = true;\n ch = state.input.charCodeAt(++state.position);\n } else {\n readNext = false;\n }\n }\n\n throwError(state, 'unexpected end of the stream within a flow collection');\n}\n\nfunction readBlockScalar(state, nodeIndent) {\n var captureStart,\n folding,\n chomping = CHOMPING_CLIP,\n didReadContent = false,\n detectedIndent = false,\n textIndent = nodeIndent,\n emptyLines = 0,\n atMoreIndented = false,\n tmp,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x7C/* | */) {\n folding = false;\n } else if (ch === 0x3E/* > */) {\n folding = true;\n } else {\n return false;\n }\n\n state.kind = 'scalar';\n state.result = '';\n\n while (ch !== 0) {\n ch = state.input.charCodeAt(++state.position);\n\n if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {\n if (CHOMPING_CLIP === chomping) {\n chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;\n } else {\n throwError(state, 'repeat of a chomping mode identifier');\n }\n\n } else if ((tmp = fromDecimalCode(ch)) >= 0) {\n if (tmp === 0) {\n throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');\n } else if (!detectedIndent) {\n textIndent = nodeIndent + tmp - 1;\n detectedIndent = true;\n } else {\n throwError(state, 'repeat of an indentation width identifier');\n }\n\n } else {\n break;\n }\n }\n\n if (is_WHITE_SPACE(ch)) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (is_WHITE_SPACE(ch));\n\n if (ch === 0x23/* # */) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (!is_EOL(ch) && (ch !== 0));\n }\n }\n\n while (ch !== 0) {\n readLineBreak(state);\n state.lineIndent = 0;\n\n ch = state.input.charCodeAt(state.position);\n\n while ((!detectedIndent || state.lineIndent < textIndent) &&\n (ch === 0x20/* Space */)) {\n state.lineIndent++;\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (!detectedIndent && state.lineIndent > textIndent) {\n textIndent = state.lineIndent;\n }\n\n if (is_EOL(ch)) {\n emptyLines++;\n continue;\n }\n\n // End of the scalar.\n if (state.lineIndent < textIndent) {\n\n // Perform the chomping.\n if (chomping === CHOMPING_KEEP) {\n state.result += common.repeat('\\n', didReadContent ? 1 + emptyLines : emptyLines);\n } else if (chomping === CHOMPING_CLIP) {\n if (didReadContent) { // i.e. only if the scalar is not empty.\n state.result += '\\n';\n }\n }\n\n // Break this `while` cycle and go to the funciton's epilogue.\n break;\n }\n\n // Folded style: use fancy rules to handle line breaks.\n if (folding) {\n\n // Lines starting with white space characters (more-indented lines) are not folded.\n if (is_WHITE_SPACE(ch)) {\n atMoreIndented = true;\n // except for the first content line (cf. Example 8.1)\n state.result += common.repeat('\\n', didReadContent ? 1 + emptyLines : emptyLines);\n\n // End of more-indented block.\n } else if (atMoreIndented) {\n atMoreIndented = false;\n state.result += common.repeat('\\n', emptyLines + 1);\n\n // Just one line break - perceive as the same line.\n } else if (emptyLines === 0) {\n if (didReadContent) { // i.e. only if we have already read some scalar content.\n state.result += ' ';\n }\n\n // Several line breaks - perceive as different lines.\n } else {\n state.result += common.repeat('\\n', emptyLines);\n }\n\n // Literal style: just add exact number of line breaks between content lines.\n } else {\n // Keep all line breaks except the header line break.\n state.result += common.repeat('\\n', didReadContent ? 1 + emptyLines : emptyLines);\n }\n\n didReadContent = true;\n detectedIndent = true;\n emptyLines = 0;\n captureStart = state.position;\n\n while (!is_EOL(ch) && (ch !== 0)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n captureSegment(state, captureStart, state.position, false);\n }\n\n return true;\n}\n\nfunction readBlockSequence(state, nodeIndent) {\n var _line,\n _tag = state.tag,\n _anchor = state.anchor,\n _result = [],\n following,\n detected = false,\n ch;\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = _result;\n }\n\n ch = state.input.charCodeAt(state.position);\n\n while (ch !== 0) {\n\n if (ch !== 0x2D/* - */) {\n break;\n }\n\n following = state.input.charCodeAt(state.position + 1);\n\n if (!is_WS_OR_EOL(following)) {\n break;\n }\n\n detected = true;\n state.position++;\n\n if (skipSeparationSpace(state, true, -1)) {\n if (state.lineIndent <= nodeIndent) {\n _result.push(null);\n ch = state.input.charCodeAt(state.position);\n continue;\n }\n }\n\n _line = state.line;\n composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);\n _result.push(state.result);\n skipSeparationSpace(state, true, -1);\n\n ch = state.input.charCodeAt(state.position);\n\n if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {\n throwError(state, 'bad indentation of a sequence entry');\n } else if (state.lineIndent < nodeIndent) {\n break;\n }\n }\n\n if (detected) {\n state.tag = _tag;\n state.anchor = _anchor;\n state.kind = 'sequence';\n state.result = _result;\n return true;\n }\n return false;\n}\n\nfunction readBlockMapping(state, nodeIndent, flowIndent) {\n var following,\n allowCompact,\n _line,\n _pos,\n _tag = state.tag,\n _anchor = state.anchor,\n _result = {},\n overridableKeys = {},\n keyTag = null,\n keyNode = null,\n valueNode = null,\n atExplicitKey = false,\n detected = false,\n ch;\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = _result;\n }\n\n ch = state.input.charCodeAt(state.position);\n\n while (ch !== 0) {\n following = state.input.charCodeAt(state.position + 1);\n _line = state.line; // Save the current line.\n _pos = state.position;\n\n //\n // Explicit notation case. There are two separate blocks:\n // first for the key (denoted by \"?\") and second for the value (denoted by \":\")\n //\n if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {\n\n if (ch === 0x3F/* ? */) {\n if (atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);\n keyTag = keyNode = valueNode = null;\n }\n\n detected = true;\n atExplicitKey = true;\n allowCompact = true;\n\n } else if (atExplicitKey) {\n // i.e. 0x3A/* : */ === character after the explicit key.\n atExplicitKey = false;\n allowCompact = true;\n\n } else {\n throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');\n }\n\n state.position += 1;\n ch = following;\n\n //\n // Implicit notation case. Flow-style node as the key first, then \":\", and the value.\n //\n } else if (composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {\n\n if (state.line === _line) {\n ch = state.input.charCodeAt(state.position);\n\n while (is_WHITE_SPACE(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (ch === 0x3A/* : */) {\n ch = state.input.charCodeAt(++state.position);\n\n if (!is_WS_OR_EOL(ch)) {\n throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');\n }\n\n if (atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);\n keyTag = keyNode = valueNode = null;\n }\n\n detected = true;\n atExplicitKey = false;\n allowCompact = false;\n keyTag = state.tag;\n keyNode = state.result;\n\n } else if (detected) {\n throwError(state, 'can not read an implicit mapping pair; a colon is missed');\n\n } else {\n state.tag = _tag;\n state.anchor = _anchor;\n return true; // Keep the result of `composeNode`.\n }\n\n } else if (detected) {\n throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');\n\n } else {\n state.tag = _tag;\n state.anchor = _anchor;\n return true; // Keep the result of `composeNode`.\n }\n\n } else {\n break; // Reading is done. Go to the epilogue.\n }\n\n //\n // Common reading code for both explicit and implicit notations.\n //\n if (state.line === _line || state.lineIndent > nodeIndent) {\n if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {\n if (atExplicitKey) {\n keyNode = state.result;\n } else {\n valueNode = state.result;\n }\n }\n\n if (!atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _pos);\n keyTag = keyNode = valueNode = null;\n }\n\n skipSeparationSpace(state, true, -1);\n ch = state.input.charCodeAt(state.position);\n }\n\n if (state.lineIndent > nodeIndent && (ch !== 0)) {\n throwError(state, 'bad indentation of a mapping entry');\n } else if (state.lineIndent < nodeIndent) {\n break;\n }\n }\n\n //\n // Epilogue.\n //\n\n // Special case: last mapping's node contains only the key in explicit notation.\n if (atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);\n }\n\n // Expose the resulting mapping.\n if (detected) {\n state.tag = _tag;\n state.anchor = _anchor;\n state.kind = 'mapping';\n state.result = _result;\n }\n\n return detected;\n}\n\nfunction readTagProperty(state) {\n var _position,\n isVerbatim = false,\n isNamed = false,\n tagHandle,\n tagName,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x21/* ! */) return false;\n\n if (state.tag !== null) {\n throwError(state, 'duplication of a tag property');\n }\n\n ch = state.input.charCodeAt(++state.position);\n\n if (ch === 0x3C/* < */) {\n isVerbatim = true;\n ch = state.input.charCodeAt(++state.position);\n\n } else if (ch === 0x21/* ! */) {\n isNamed = true;\n tagHandle = '!!';\n ch = state.input.charCodeAt(++state.position);\n\n } else {\n tagHandle = '!';\n }\n\n _position = state.position;\n\n if (isVerbatim) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (ch !== 0 && ch !== 0x3E/* > */);\n\n if (state.position < state.length) {\n tagName = state.input.slice(_position, state.position);\n ch = state.input.charCodeAt(++state.position);\n } else {\n throwError(state, 'unexpected end of the stream within a verbatim tag');\n }\n } else {\n while (ch !== 0 && !is_WS_OR_EOL(ch)) {\n\n if (ch === 0x21/* ! */) {\n if (!isNamed) {\n tagHandle = state.input.slice(_position - 1, state.position + 1);\n\n if (!PATTERN_TAG_HANDLE.test(tagHandle)) {\n throwError(state, 'named tag handle cannot contain such characters');\n }\n\n isNamed = true;\n _position = state.position + 1;\n } else {\n throwError(state, 'tag suffix cannot contain exclamation marks');\n }\n }\n\n ch = state.input.charCodeAt(++state.position);\n }\n\n tagName = state.input.slice(_position, state.position);\n\n if (PATTERN_FLOW_INDICATORS.test(tagName)) {\n throwError(state, 'tag suffix cannot contain flow indicator characters');\n }\n }\n\n if (tagName && !PATTERN_TAG_URI.test(tagName)) {\n throwError(state, 'tag name cannot contain such characters: ' + tagName);\n }\n\n if (isVerbatim) {\n state.tag = tagName;\n\n } else if (_hasOwnProperty.call(state.tagMap, tagHandle)) {\n state.tag = state.tagMap[tagHandle] + tagName;\n\n } else if (tagHandle === '!') {\n state.tag = '!' + tagName;\n\n } else if (tagHandle === '!!') {\n state.tag = 'tag:yaml.org,2002:' + tagName;\n\n } else {\n throwError(state, 'undeclared tag handle \"' + tagHandle + '\"');\n }\n\n return true;\n}\n\nfunction readAnchorProperty(state) {\n var _position,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x26/* & */) return false;\n\n if (state.anchor !== null) {\n throwError(state, 'duplication of an anchor property');\n }\n\n ch = state.input.charCodeAt(++state.position);\n _position = state.position;\n\n while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (state.position === _position) {\n throwError(state, 'name of an anchor node must contain at least one character');\n }\n\n state.anchor = state.input.slice(_position, state.position);\n return true;\n}\n\nfunction readAlias(state) {\n var _position, alias,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x2A/* * */) return false;\n\n ch = state.input.charCodeAt(++state.position);\n _position = state.position;\n\n while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (state.position === _position) {\n throwError(state, 'name of an alias node must contain at least one character');\n }\n\n alias = state.input.slice(_position, state.position);\n\n if (!state.anchorMap.hasOwnProperty(alias)) {\n throwError(state, 'unidentified alias \"' + alias + '\"');\n }\n\n state.result = state.anchorMap[alias];\n skipSeparationSpace(state, true, -1);\n return true;\n}\n\nfunction composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {\n var allowBlockStyles,\n allowBlockScalars,\n allowBlockCollections,\n indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this parentIndent) {\n indentStatus = 1;\n } else if (state.lineIndent === parentIndent) {\n indentStatus = 0;\n } else if (state.lineIndent < parentIndent) {\n indentStatus = -1;\n }\n }\n }\n\n if (indentStatus === 1) {\n while (readTagProperty(state) || readAnchorProperty(state)) {\n if (skipSeparationSpace(state, true, -1)) {\n atNewLine = true;\n allowBlockCollections = allowBlockStyles;\n\n if (state.lineIndent > parentIndent) {\n indentStatus = 1;\n } else if (state.lineIndent === parentIndent) {\n indentStatus = 0;\n } else if (state.lineIndent < parentIndent) {\n indentStatus = -1;\n }\n } else {\n allowBlockCollections = false;\n }\n }\n }\n\n if (allowBlockCollections) {\n allowBlockCollections = atNewLine || allowCompact;\n }\n\n if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {\n if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {\n flowIndent = parentIndent;\n } else {\n flowIndent = parentIndent + 1;\n }\n\n blockIndent = state.position - state.lineStart;\n\n if (indentStatus === 1) {\n if (allowBlockCollections &&\n (readBlockSequence(state, blockIndent) ||\n readBlockMapping(state, blockIndent, flowIndent)) ||\n readFlowCollection(state, flowIndent)) {\n hasContent = true;\n } else {\n if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||\n readSingleQuotedScalar(state, flowIndent) ||\n readDoubleQuotedScalar(state, flowIndent)) {\n hasContent = true;\n\n } else if (readAlias(state)) {\n hasContent = true;\n\n if (state.tag !== null || state.anchor !== null) {\n throwError(state, 'alias node should not have any properties');\n }\n\n } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {\n hasContent = true;\n\n if (state.tag === null) {\n state.tag = '?';\n }\n }\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = state.result;\n }\n }\n } else if (indentStatus === 0) {\n // Special case: block sequences are allowed to have same indentation level as the parent.\n // http://www.yaml.org/spec/1.2/spec.html#id2799784\n hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);\n }\n }\n\n if (state.tag !== null && state.tag !== '!') {\n if (state.tag === '?') {\n for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {\n type = state.implicitTypes[typeIndex];\n\n // Implicit resolving is not allowed for non-scalar types, and '?'\n // non-specific tag is only assigned to plain scalars. So, it isn't\n // needed to check for 'kind' conformity.\n\n if (type.resolve(state.result)) { // `state.result` updated in resolver if matched\n state.result = type.construct(state.result);\n state.tag = type.tag;\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = state.result;\n }\n break;\n }\n }\n } else if (_hasOwnProperty.call(state.typeMap[state.kind || 'fallback'], state.tag)) {\n type = state.typeMap[state.kind || 'fallback'][state.tag];\n\n if (state.result !== null && type.kind !== state.kind) {\n throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be \"' + type.kind + '\", not \"' + state.kind + '\"');\n }\n\n if (!type.resolve(state.result)) { // `state.result` updated in resolver if matched\n throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');\n } else {\n state.result = type.construct(state.result);\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = state.result;\n }\n }\n } else {\n throwError(state, 'unknown tag !<' + state.tag + '>');\n }\n }\n\n if (state.listener !== null) {\n state.listener('close', state);\n }\n return state.tag !== null || state.anchor !== null || hasContent;\n}\n\nfunction readDocument(state) {\n var documentStart = state.position,\n _position,\n directiveName,\n directiveArgs,\n hasDirectives = false,\n ch;\n\n state.version = null;\n state.checkLineBreaks = state.legacy;\n state.tagMap = {};\n state.anchorMap = {};\n\n while ((ch = state.input.charCodeAt(state.position)) !== 0) {\n skipSeparationSpace(state, true, -1);\n\n ch = state.input.charCodeAt(state.position);\n\n if (state.lineIndent > 0 || ch !== 0x25/* % */) {\n break;\n }\n\n hasDirectives = true;\n ch = state.input.charCodeAt(++state.position);\n _position = state.position;\n\n while (ch !== 0 && !is_WS_OR_EOL(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n directiveName = state.input.slice(_position, state.position);\n directiveArgs = [];\n\n if (directiveName.length < 1) {\n throwError(state, 'directive name must not be less than one character in length');\n }\n\n while (ch !== 0) {\n while (is_WHITE_SPACE(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (ch === 0x23/* # */) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (ch !== 0 && !is_EOL(ch));\n break;\n }\n\n if (is_EOL(ch)) break;\n\n _position = state.position;\n\n while (ch !== 0 && !is_WS_OR_EOL(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n directiveArgs.push(state.input.slice(_position, state.position));\n }\n\n if (ch !== 0) readLineBreak(state);\n\n if (_hasOwnProperty.call(directiveHandlers, directiveName)) {\n directiveHandlers[directiveName](state, directiveName, directiveArgs);\n } else {\n throwWarning(state, 'unknown document directive \"' + directiveName + '\"');\n }\n }\n\n skipSeparationSpace(state, true, -1);\n\n if (state.lineIndent === 0 &&\n state.input.charCodeAt(state.position) === 0x2D/* - */ &&\n state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&\n state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {\n state.position += 3;\n skipSeparationSpace(state, true, -1);\n\n } else if (hasDirectives) {\n throwError(state, 'directives end mark is expected');\n }\n\n composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);\n skipSeparationSpace(state, true, -1);\n\n if (state.checkLineBreaks &&\n PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {\n throwWarning(state, 'non-ASCII line breaks are interpreted as content');\n }\n\n state.documents.push(state.result);\n\n if (state.position === state.lineStart && testDocumentSeparator(state)) {\n\n if (state.input.charCodeAt(state.position) === 0x2E/* . */) {\n state.position += 3;\n skipSeparationSpace(state, true, -1);\n }\n return;\n }\n\n if (state.position < (state.length - 1)) {\n throwError(state, 'end of the stream or a document separator is expected');\n } else {\n return;\n }\n}\n\n\nfunction loadDocuments(input, options) {\n input = String(input);\n options = options || {};\n\n if (input.length !== 0) {\n\n // Add tailing `\\n` if not exists\n if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&\n input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {\n input += '\\n';\n }\n\n // Strip BOM\n if (input.charCodeAt(0) === 0xFEFF) {\n input = input.slice(1);\n }\n }\n\n var state = new State(input, options);\n\n // Use 0 as string terminator. That significantly simplifies bounds check.\n state.input += '\\0';\n\n while (state.input.charCodeAt(state.position) === 0x20/* Space */) {\n state.lineIndent += 1;\n state.position += 1;\n }\n\n while (state.position < (state.length - 1)) {\n readDocument(state);\n }\n\n return state.documents;\n}\n\n\nfunction loadAll(input, iterator, options) {\n var documents = loadDocuments(input, options), index, length;\n\n if (typeof iterator !== 'function') {\n return documents;\n }\n\n for (index = 0, length = documents.length; index < length; index += 1) {\n iterator(documents[index]);\n }\n}\n\n\nfunction load(input, options) {\n var documents = loadDocuments(input, options);\n\n if (documents.length === 0) {\n /*eslint-disable no-undefined*/\n return undefined;\n } else if (documents.length === 1) {\n return documents[0];\n }\n throw new YAMLException('expected a single document in the stream, but found more');\n}\n\n\nfunction safeLoadAll(input, output, options) {\n if (typeof output === 'function') {\n loadAll(input, output, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));\n } else {\n return loadAll(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));\n }\n}\n\n\nfunction safeLoad(input, options) {\n return load(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));\n}\n\n\nmodule.exports.loadAll = loadAll;\nmodule.exports.load = load;\nmodule.exports.safeLoadAll = safeLoadAll;\nmodule.exports.safeLoad = safeLoad;\n","'use strict';\n\n\nvar common = require('./common');\n\n\nfunction Mark(name, buffer, position, line, column) {\n this.name = name;\n this.buffer = buffer;\n this.position = position;\n this.line = line;\n this.column = column;\n}\n\n\nMark.prototype.getSnippet = function getSnippet(indent, maxLength) {\n var head, start, tail, end, snippet;\n\n if (!this.buffer) return null;\n\n indent = indent || 4;\n maxLength = maxLength || 75;\n\n head = '';\n start = this.position;\n\n while (start > 0 && '\\x00\\r\\n\\x85\\u2028\\u2029'.indexOf(this.buffer.charAt(start - 1)) === -1) {\n start -= 1;\n if (this.position - start > (maxLength / 2 - 1)) {\n head = ' ... ';\n start += 5;\n break;\n }\n }\n\n tail = '';\n end = this.position;\n\n while (end < this.buffer.length && '\\x00\\r\\n\\x85\\u2028\\u2029'.indexOf(this.buffer.charAt(end)) === -1) {\n end += 1;\n if (end - this.position > (maxLength / 2 - 1)) {\n tail = ' ... ';\n end -= 5;\n break;\n }\n }\n\n snippet = this.buffer.slice(start, end);\n\n return common.repeat(' ', indent) + head + snippet + tail + '\\n' +\n common.repeat(' ', indent + this.position - start + head.length) + '^';\n};\n\n\nMark.prototype.toString = function toString(compact) {\n var snippet, where = '';\n\n if (this.name) {\n where += 'in \"' + this.name + '\" ';\n }\n\n where += 'at line ' + (this.line + 1) + ', column ' + (this.column + 1);\n\n if (!compact) {\n snippet = this.getSnippet();\n\n if (snippet) {\n where += ':\\n' + snippet;\n }\n }\n\n return where;\n};\n\n\nmodule.exports = Mark;\n","'use strict';\n\nvar Type = require('../type');\n\nmodule.exports = new Type('tag:yaml.org,2002:str', {\n kind: 'scalar',\n construct: function (data) { return data !== null ? data : ''; }\n});\n","'use strict';\n\nvar Type = require('../type');\n\nmodule.exports = new Type('tag:yaml.org,2002:seq', {\n kind: 'sequence',\n construct: function (data) { return data !== null ? data : []; }\n});\n","'use strict';\n\nvar Type = require('../type');\n\nmodule.exports = new Type('tag:yaml.org,2002:map', {\n kind: 'mapping',\n construct: function (data) { return data !== null ? data : {}; }\n});\n","'use strict';\n\nvar Type = require('../type');\n\nfunction resolveYamlNull(data) {\n if (data === null) return true;\n\n var max = data.length;\n\n return (max === 1 && data === '~') ||\n (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL'));\n}\n\nfunction constructYamlNull() {\n return null;\n}\n\nfunction isNull(object) {\n return object === null;\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:null', {\n kind: 'scalar',\n resolve: resolveYamlNull,\n construct: constructYamlNull,\n predicate: isNull,\n represent: {\n canonical: function () { return '~'; },\n lowercase: function () { return 'null'; },\n uppercase: function () { return 'NULL'; },\n camelcase: function () { return 'Null'; }\n },\n defaultStyle: 'lowercase'\n});\n","'use strict';\n\nvar Type = require('../type');\n\nfunction resolveYamlBoolean(data) {\n if (data === null) return false;\n\n var max = data.length;\n\n return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) ||\n (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE'));\n}\n\nfunction constructYamlBoolean(data) {\n return data === 'true' ||\n data === 'True' ||\n data === 'TRUE';\n}\n\nfunction isBoolean(object) {\n return Object.prototype.toString.call(object) === '[object Boolean]';\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:bool', {\n kind: 'scalar',\n resolve: resolveYamlBoolean,\n construct: constructYamlBoolean,\n predicate: isBoolean,\n represent: {\n lowercase: function (object) { return object ? 'true' : 'false'; },\n uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; },\n camelcase: function (object) { return object ? 'True' : 'False'; }\n },\n defaultStyle: 'lowercase'\n});\n","'use strict';\n\nvar common = require('../common');\nvar Type = require('../type');\n\nfunction isHexCode(c) {\n return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) ||\n ((0x41/* A */ <= c) && (c <= 0x46/* F */)) ||\n ((0x61/* a */ <= c) && (c <= 0x66/* f */));\n}\n\nfunction isOctCode(c) {\n return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */));\n}\n\nfunction isDecCode(c) {\n return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */));\n}\n\nfunction resolveYamlInteger(data) {\n if (data === null) return false;\n\n var max = data.length,\n index = 0,\n hasDigits = false,\n ch;\n\n if (!max) return false;\n\n ch = data[index];\n\n // sign\n if (ch === '-' || ch === '+') {\n ch = data[++index];\n }\n\n if (ch === '0') {\n // 0\n if (index + 1 === max) return true;\n ch = data[++index];\n\n // base 2, base 8, base 16\n\n if (ch === 'b') {\n // base 2\n index++;\n\n for (; index < max; index++) {\n ch = data[index];\n if (ch === '_') continue;\n if (ch !== '0' && ch !== '1') return false;\n hasDigits = true;\n }\n return hasDigits && ch !== '_';\n }\n\n\n if (ch === 'x') {\n // base 16\n index++;\n\n for (; index < max; index++) {\n ch = data[index];\n if (ch === '_') continue;\n if (!isHexCode(data.charCodeAt(index))) return false;\n hasDigits = true;\n }\n return hasDigits && ch !== '_';\n }\n\n // base 8\n for (; index < max; index++) {\n ch = data[index];\n if (ch === '_') continue;\n if (!isOctCode(data.charCodeAt(index))) return false;\n hasDigits = true;\n }\n return hasDigits && ch !== '_';\n }\n\n // base 10 (except 0) or base 60\n\n // value should not start with `_`;\n if (ch === '_') return false;\n\n for (; index < max; index++) {\n ch = data[index];\n if (ch === '_') continue;\n if (ch === ':') break;\n if (!isDecCode(data.charCodeAt(index))) {\n return false;\n }\n hasDigits = true;\n }\n\n // Should have digits and should not end with `_`\n if (!hasDigits || ch === '_') return false;\n\n // if !base60 - done;\n if (ch !== ':') return true;\n\n // base60 almost not used, no needs to optimize\n return /^(:[0-5]?[0-9])+$/.test(data.slice(index));\n}\n\nfunction constructYamlInteger(data) {\n var value = data, sign = 1, ch, base, digits = [];\n\n if (value.indexOf('_') !== -1) {\n value = value.replace(/_/g, '');\n }\n\n ch = value[0];\n\n if (ch === '-' || ch === '+') {\n if (ch === '-') sign = -1;\n value = value.slice(1);\n ch = value[0];\n }\n\n if (value === '0') return 0;\n\n if (ch === '0') {\n if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);\n if (value[1] === 'x') return sign * parseInt(value, 16);\n return sign * parseInt(value, 8);\n }\n\n if (value.indexOf(':') !== -1) {\n value.split(':').forEach(function (v) {\n digits.unshift(parseInt(v, 10));\n });\n\n value = 0;\n base = 1;\n\n digits.forEach(function (d) {\n value += (d * base);\n base *= 60;\n });\n\n return sign * value;\n\n }\n\n return sign * parseInt(value, 10);\n}\n\nfunction isInteger(object) {\n return (Object.prototype.toString.call(object)) === '[object Number]' &&\n (object % 1 === 0 && !common.isNegativeZero(object));\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:int', {\n kind: 'scalar',\n resolve: resolveYamlInteger,\n construct: constructYamlInteger,\n predicate: isInteger,\n represent: {\n binary: function (obj) { return obj >= 0 ? '0b' + obj.toString(2) : '-0b' + obj.toString(2).slice(1); },\n octal: function (obj) { return obj >= 0 ? '0' + obj.toString(8) : '-0' + obj.toString(8).slice(1); },\n decimal: function (obj) { return obj.toString(10); },\n /* eslint-disable max-len */\n hexadecimal: function (obj) { return obj >= 0 ? '0x' + obj.toString(16).toUpperCase() : '-0x' + obj.toString(16).toUpperCase().slice(1); }\n },\n defaultStyle: 'decimal',\n styleAliases: {\n binary: [ 2, 'bin' ],\n octal: [ 8, 'oct' ],\n decimal: [ 10, 'dec' ],\n hexadecimal: [ 16, 'hex' ]\n }\n});\n","'use strict';\n\nvar common = require('../common');\nvar Type = require('../type');\n\nvar YAML_FLOAT_PATTERN = new RegExp(\n // 2.5e4, 2.5 and integers\n '^(?:[-+]?(?:0|[1-9][0-9_]*)(?:\\\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?' +\n // .2e4, .2\n // special case, seems not from spec\n '|\\\\.[0-9_]+(?:[eE][-+]?[0-9]+)?' +\n // 20:59\n '|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\\\.[0-9_]*' +\n // .inf\n '|[-+]?\\\\.(?:inf|Inf|INF)' +\n // .nan\n '|\\\\.(?:nan|NaN|NAN))$');\n\nfunction resolveYamlFloat(data) {\n if (data === null) return false;\n\n if (!YAML_FLOAT_PATTERN.test(data) ||\n // Quick hack to not allow integers end with `_`\n // Probably should update regexp & check speed\n data[data.length - 1] === '_') {\n return false;\n }\n\n return true;\n}\n\nfunction constructYamlFloat(data) {\n var value, sign, base, digits;\n\n value = data.replace(/_/g, '').toLowerCase();\n sign = value[0] === '-' ? -1 : 1;\n digits = [];\n\n if ('+-'.indexOf(value[0]) >= 0) {\n value = value.slice(1);\n }\n\n if (value === '.inf') {\n return (sign === 1) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;\n\n } else if (value === '.nan') {\n return NaN;\n\n } else if (value.indexOf(':') >= 0) {\n value.split(':').forEach(function (v) {\n digits.unshift(parseFloat(v, 10));\n });\n\n value = 0.0;\n base = 1;\n\n digits.forEach(function (d) {\n value += d * base;\n base *= 60;\n });\n\n return sign * value;\n\n }\n return sign * parseFloat(value, 10);\n}\n\n\nvar SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;\n\nfunction representYamlFloat(object, style) {\n var res;\n\n if (isNaN(object)) {\n switch (style) {\n case 'lowercase': return '.nan';\n case 'uppercase': return '.NAN';\n case 'camelcase': return '.NaN';\n }\n } else if (Number.POSITIVE_INFINITY === object) {\n switch (style) {\n case 'lowercase': return '.inf';\n case 'uppercase': return '.INF';\n case 'camelcase': return '.Inf';\n }\n } else if (Number.NEGATIVE_INFINITY === object) {\n switch (style) {\n case 'lowercase': return '-.inf';\n case 'uppercase': return '-.INF';\n case 'camelcase': return '-.Inf';\n }\n } else if (common.isNegativeZero(object)) {\n return '-0.0';\n }\n\n res = object.toString(10);\n\n // JS stringifier can build scientific format without dots: 5e-100,\n // while YAML requres dot: 5.e-100. Fix it with simple hack\n\n return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;\n}\n\nfunction isFloat(object) {\n return (Object.prototype.toString.call(object) === '[object Number]') &&\n (object % 1 !== 0 || common.isNegativeZero(object));\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:float', {\n kind: 'scalar',\n resolve: resolveYamlFloat,\n construct: constructYamlFloat,\n predicate: isFloat,\n represent: representYamlFloat,\n defaultStyle: 'lowercase'\n});\n","'use strict';\n\nvar Type = require('../type');\n\nvar YAML_DATE_REGEXP = new RegExp(\n '^([0-9][0-9][0-9][0-9])' + // [1] year\n '-([0-9][0-9])' + // [2] month\n '-([0-9][0-9])$'); // [3] day\n\nvar YAML_TIMESTAMP_REGEXP = new RegExp(\n '^([0-9][0-9][0-9][0-9])' + // [1] year\n '-([0-9][0-9]?)' + // [2] month\n '-([0-9][0-9]?)' + // [3] day\n '(?:[Tt]|[ \\\\t]+)' + // ...\n '([0-9][0-9]?)' + // [4] hour\n ':([0-9][0-9])' + // [5] minute\n ':([0-9][0-9])' + // [6] second\n '(?:\\\\.([0-9]*))?' + // [7] fraction\n '(?:[ \\\\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour\n '(?::([0-9][0-9]))?))?$'); // [11] tz_minute\n\nfunction resolveYamlTimestamp(data) {\n if (data === null) return false;\n if (YAML_DATE_REGEXP.exec(data) !== null) return true;\n if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;\n return false;\n}\n\nfunction constructYamlTimestamp(data) {\n var match, year, month, day, hour, minute, second, fraction = 0,\n delta = null, tz_hour, tz_minute, date;\n\n match = YAML_DATE_REGEXP.exec(data);\n if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);\n\n if (match === null) throw new Error('Date resolve error');\n\n // match: [1] year [2] month [3] day\n\n year = +(match[1]);\n month = +(match[2]) - 1; // JS month starts with 0\n day = +(match[3]);\n\n if (!match[4]) { // no hour\n return new Date(Date.UTC(year, month, day));\n }\n\n // match: [4] hour [5] minute [6] second [7] fraction\n\n hour = +(match[4]);\n minute = +(match[5]);\n second = +(match[6]);\n\n if (match[7]) {\n fraction = match[7].slice(0, 3);\n while (fraction.length < 3) { // milli-seconds\n fraction += '0';\n }\n fraction = +fraction;\n }\n\n // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute\n\n if (match[9]) {\n tz_hour = +(match[10]);\n tz_minute = +(match[11] || 0);\n delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds\n if (match[9] === '-') delta = -delta;\n }\n\n date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));\n\n if (delta) date.setTime(date.getTime() - delta);\n\n return date;\n}\n\nfunction representYamlTimestamp(object /*, style*/) {\n return object.toISOString();\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:timestamp', {\n kind: 'scalar',\n resolve: resolveYamlTimestamp,\n construct: constructYamlTimestamp,\n instanceOf: Date,\n represent: representYamlTimestamp\n});\n","'use strict';\n\nvar Type = require('../type');\n\nfunction resolveYamlMerge(data) {\n return data === '<<' || data === null;\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:merge', {\n kind: 'scalar',\n resolve: resolveYamlMerge\n});\n","'use strict';\n\n/*eslint-disable no-bitwise*/\n\nvar NodeBuffer;\n\ntry {\n // A trick for browserified version, to not include `Buffer` shim\n var _require = require;\n NodeBuffer = _require('buffer').Buffer;\n} catch (__) {}\n\nvar Type = require('../type');\n\n\n// [ 64, 65, 66 ] -> [ padding, CR, LF ]\nvar BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\\n\\r';\n\n\nfunction resolveYamlBinary(data) {\n if (data === null) return false;\n\n var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;\n\n // Convert one by one.\n for (idx = 0; idx < max; idx++) {\n code = map.indexOf(data.charAt(idx));\n\n // Skip CR/LF\n if (code > 64) continue;\n\n // Fail on illegal characters\n if (code < 0) return false;\n\n bitlen += 6;\n }\n\n // If there are any bits left, source was corrupted\n return (bitlen % 8) === 0;\n}\n\nfunction constructYamlBinary(data) {\n var idx, tailbits,\n input = data.replace(/[\\r\\n=]/g, ''), // remove CR/LF & padding to simplify scan\n max = input.length,\n map = BASE64_MAP,\n bits = 0,\n result = [];\n\n // Collect by 6*4 bits (3 bytes)\n\n for (idx = 0; idx < max; idx++) {\n if ((idx % 4 === 0) && idx) {\n result.push((bits >> 16) & 0xFF);\n result.push((bits >> 8) & 0xFF);\n result.push(bits & 0xFF);\n }\n\n bits = (bits << 6) | map.indexOf(input.charAt(idx));\n }\n\n // Dump tail\n\n tailbits = (max % 4) * 6;\n\n if (tailbits === 0) {\n result.push((bits >> 16) & 0xFF);\n result.push((bits >> 8) & 0xFF);\n result.push(bits & 0xFF);\n } else if (tailbits === 18) {\n result.push((bits >> 10) & 0xFF);\n result.push((bits >> 2) & 0xFF);\n } else if (tailbits === 12) {\n result.push((bits >> 4) & 0xFF);\n }\n\n // Wrap into Buffer for NodeJS and leave Array for browser\n if (NodeBuffer) {\n // Support node 6.+ Buffer API when available\n return NodeBuffer.from ? NodeBuffer.from(result) : new NodeBuffer(result);\n }\n\n return result;\n}\n\nfunction representYamlBinary(object /*, style*/) {\n var result = '', bits = 0, idx, tail,\n max = object.length,\n map = BASE64_MAP;\n\n // Convert every three bytes to 4 ASCII characters.\n\n for (idx = 0; idx < max; idx++) {\n if ((idx % 3 === 0) && idx) {\n result += map[(bits >> 18) & 0x3F];\n result += map[(bits >> 12) & 0x3F];\n result += map[(bits >> 6) & 0x3F];\n result += map[bits & 0x3F];\n }\n\n bits = (bits << 8) + object[idx];\n }\n\n // Dump tail\n\n tail = max % 3;\n\n if (tail === 0) {\n result += map[(bits >> 18) & 0x3F];\n result += map[(bits >> 12) & 0x3F];\n result += map[(bits >> 6) & 0x3F];\n result += map[bits & 0x3F];\n } else if (tail === 2) {\n result += map[(bits >> 10) & 0x3F];\n result += map[(bits >> 4) & 0x3F];\n result += map[(bits << 2) & 0x3F];\n result += map[64];\n } else if (tail === 1) {\n result += map[(bits >> 2) & 0x3F];\n result += map[(bits << 4) & 0x3F];\n result += map[64];\n result += map[64];\n }\n\n return result;\n}\n\nfunction isBinary(object) {\n return NodeBuffer && NodeBuffer.isBuffer(object);\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:binary', {\n kind: 'scalar',\n resolve: resolveYamlBinary,\n construct: constructYamlBinary,\n predicate: isBinary,\n represent: representYamlBinary\n});\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author Feross Aboukhadijeh \n * @license MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n * === true Use Uint8Array implementation (fastest)\n * === false Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n * - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n * See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n * - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n * - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n * incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n ? global.TYPED_ARRAY_SUPPORT\n : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n try {\n var arr = new Uint8Array(1)\n arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n return arr.foo() === 42 && // typed array instances can be augmented\n typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n } catch (e) {\n return false\n }\n}\n\nfunction kMaxLength () {\n return Buffer.TYPED_ARRAY_SUPPORT\n ? 0x7fffffff\n : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n if (kMaxLength() < length) {\n throw new RangeError('Invalid typed array length')\n }\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n // Return an augmented `Uint8Array` instance, for best performance\n that = new Uint8Array(length)\n that.__proto__ = Buffer.prototype\n } else {\n // Fallback: Return an object instance of the Buffer class\n if (that === null) {\n that = new Buffer(length)\n }\n that.length = length\n }\n\n return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n return new Buffer(arg, encodingOrOffset, length)\n }\n\n // Common case.\n if (typeof arg === 'number') {\n if (typeof encodingOrOffset === 'string') {\n throw new Error(\n 'If encoding is specified then the first argument must be a string'\n )\n }\n return allocUnsafe(this, arg)\n }\n return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n arr.__proto__ = Buffer.prototype\n return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n if (typeof value === 'number') {\n throw new TypeError('\"value\" argument must not be a number')\n }\n\n if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n return fromArrayBuffer(that, value, encodingOrOffset, length)\n }\n\n if (typeof value === 'string') {\n return fromString(that, value, encodingOrOffset)\n }\n\n return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n Buffer.prototype.__proto__ = Uint8Array.prototype\n Buffer.__proto__ = Uint8Array\n if (typeof Symbol !== 'undefined' && Symbol.species &&\n Buffer[Symbol.species] === Buffer) {\n // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n Object.defineProperty(Buffer, Symbol.species, {\n value: null,\n configurable: true\n })\n }\n}\n\nfunction assertSize (size) {\n if (typeof size !== 'number') {\n throw new TypeError('\"size\" argument must be a number')\n } else if (size < 0) {\n throw new RangeError('\"size\" argument must not be negative')\n }\n}\n\nfunction alloc (that, size, fill, encoding) {\n assertSize(size)\n if (size <= 0) {\n return createBuffer(that, size)\n }\n if (fill !== undefined) {\n // Only pay attention to encoding if it's a string. This\n // prevents accidentally sending in a number that would\n // be interpretted as a start offset.\n return typeof encoding === 'string'\n ? createBuffer(that, size).fill(fill, encoding)\n : createBuffer(that, size).fill(fill)\n }\n return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n assertSize(size)\n that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n if (!Buffer.TYPED_ARRAY_SUPPORT) {\n for (var i = 0; i < size; ++i) {\n that[i] = 0\n }\n }\n return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n if (typeof encoding !== 'string' || encoding === '') {\n encoding = 'utf8'\n }\n\n if (!Buffer.isEncoding(encoding)) {\n throw new TypeError('\"encoding\" must be a valid string encoding')\n }\n\n var length = byteLength(string, encoding) | 0\n that = createBuffer(that, length)\n\n var actual = that.write(string, encoding)\n\n if (actual !== length) {\n // Writing a hex string, for example, that contains invalid characters will\n // cause everything after the first invalid character to be ignored. (e.g.\n // 'abxxcd' will be treated as 'ab')\n that = that.slice(0, actual)\n }\n\n return that\n}\n\nfunction fromArrayLike (that, array) {\n var length = array.length < 0 ? 0 : checked(array.length) | 0\n that = createBuffer(that, length)\n for (var i = 0; i < length; i += 1) {\n that[i] = array[i] & 255\n }\n return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n if (byteOffset < 0 || array.byteLength < byteOffset) {\n throw new RangeError('\\'offset\\' is out of bounds')\n }\n\n if (array.byteLength < byteOffset + (length || 0)) {\n throw new RangeError('\\'length\\' is out of bounds')\n }\n\n if (byteOffset === undefined && length === undefined) {\n array = new Uint8Array(array)\n } else if (length === undefined) {\n array = new Uint8Array(array, byteOffset)\n } else {\n array = new Uint8Array(array, byteOffset, length)\n }\n\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n // Return an augmented `Uint8Array` instance, for best performance\n that = array\n that.__proto__ = Buffer.prototype\n } else {\n // Fallback: Return an object instance of the Buffer class\n that = fromArrayLike(that, array)\n }\n return that\n}\n\nfunction fromObject (that, obj) {\n if (Buffer.isBuffer(obj)) {\n var len = checked(obj.length) | 0\n that = createBuffer(that, len)\n\n if (that.length === 0) {\n return that\n }\n\n obj.copy(that, 0, 0, len)\n return that\n }\n\n if (obj) {\n if ((typeof ArrayBuffer !== 'undefined' &&\n obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n if (typeof obj.length !== 'number' || isnan(obj.length)) {\n return createBuffer(that, 0)\n }\n return fromArrayLike(that, obj)\n }\n\n if (obj.type === 'Buffer' && isArray(obj.data)) {\n return fromArrayLike(that, obj.data)\n }\n }\n\n throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n // Note: cannot use `length < kMaxLength()` here because that fails when\n // length is NaN (which is otherwise coerced to zero.)\n if (length >= kMaxLength()) {\n throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n 'size: 0x' + kMaxLength().toString(16) + ' bytes')\n }\n return length | 0\n}\n\nfunction SlowBuffer (length) {\n if (+length != length) { // eslint-disable-line eqeqeq\n length = 0\n }\n return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n throw new TypeError('Arguments must be Buffers')\n }\n\n if (a === b) return 0\n\n var x = a.length\n var y = b.length\n\n for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n if (a[i] !== b[i]) {\n x = a[i]\n y = b[i]\n break\n }\n }\n\n if (x < y) return -1\n if (y < x) return 1\n return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n switch (String(encoding).toLowerCase()) {\n case 'hex':\n case 'utf8':\n case 'utf-8':\n case 'ascii':\n case 'latin1':\n case 'binary':\n case 'base64':\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return true\n default:\n return false\n }\n}\n\nBuffer.concat = function concat (list, length) {\n if (!isArray(list)) {\n throw new TypeError('\"list\" argument must be an Array of Buffers')\n }\n\n if (list.length === 0) {\n return Buffer.alloc(0)\n }\n\n var i\n if (length === undefined) {\n length = 0\n for (i = 0; i < list.length; ++i) {\n length += list[i].length\n }\n }\n\n var buffer = Buffer.allocUnsafe(length)\n var pos = 0\n for (i = 0; i < list.length; ++i) {\n var buf = list[i]\n if (!Buffer.isBuffer(buf)) {\n throw new TypeError('\"list\" argument must be an Array of Buffers')\n }\n buf.copy(buffer, pos)\n pos += buf.length\n }\n return buffer\n}\n\nfunction byteLength (string, encoding) {\n if (Buffer.isBuffer(string)) {\n return string.length\n }\n if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n return string.byteLength\n }\n if (typeof string !== 'string') {\n string = '' + string\n }\n\n var len = string.length\n if (len === 0) return 0\n\n // Use a for loop to avoid recursion\n var loweredCase = false\n for (;;) {\n switch (encoding) {\n case 'ascii':\n case 'latin1':\n case 'binary':\n return len\n case 'utf8':\n case 'utf-8':\n case undefined:\n return utf8ToBytes(string).length\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return len * 2\n case 'hex':\n return len >>> 1\n case 'base64':\n return base64ToBytes(string).length\n default:\n if (loweredCase) return utf8ToBytes(string).length // assume utf8\n encoding = ('' + encoding).toLowerCase()\n loweredCase = true\n }\n }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n var loweredCase = false\n\n // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n // property of a typed array.\n\n // This behaves neither like String nor Uint8Array in that we set start/end\n // to their upper/lower bounds if the value passed is out of range.\n // undefined is handled specially as per ECMA-262 6th Edition,\n // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n if (start === undefined || start < 0) {\n start = 0\n }\n // Return early if start > this.length. Done here to prevent potential uint32\n // coercion fail below.\n if (start > this.length) {\n return ''\n }\n\n if (end === undefined || end > this.length) {\n end = this.length\n }\n\n if (end <= 0) {\n return ''\n }\n\n // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n end >>>= 0\n start >>>= 0\n\n if (end <= start) {\n return ''\n }\n\n if (!encoding) encoding = 'utf8'\n\n while (true) {\n switch (encoding) {\n case 'hex':\n return hexSlice(this, start, end)\n\n case 'utf8':\n case 'utf-8':\n return utf8Slice(this, start, end)\n\n case 'ascii':\n return asciiSlice(this, start, end)\n\n case 'latin1':\n case 'binary':\n return latin1Slice(this, start, end)\n\n case 'base64':\n return base64Slice(this, start, end)\n\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return utf16leSlice(this, start, end)\n\n default:\n if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n encoding = (encoding + '').toLowerCase()\n loweredCase = true\n }\n }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n var i = b[n]\n b[n] = b[m]\n b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n var len = this.length\n if (len % 2 !== 0) {\n throw new RangeError('Buffer size must be a multiple of 16-bits')\n }\n for (var i = 0; i < len; i += 2) {\n swap(this, i, i + 1)\n }\n return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n var len = this.length\n if (len % 4 !== 0) {\n throw new RangeError('Buffer size must be a multiple of 32-bits')\n }\n for (var i = 0; i < len; i += 4) {\n swap(this, i, i + 3)\n swap(this, i + 1, i + 2)\n }\n return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n var len = this.length\n if (len % 8 !== 0) {\n throw new RangeError('Buffer size must be a multiple of 64-bits')\n }\n for (var i = 0; i < len; i += 8) {\n swap(this, i, i + 7)\n swap(this, i + 1, i + 6)\n swap(this, i + 2, i + 5)\n swap(this, i + 3, i + 4)\n }\n return this\n}\n\nBuffer.prototype.toString = function toString () {\n var length = this.length | 0\n if (length === 0) return ''\n if (arguments.length === 0) return utf8Slice(this, 0, length)\n return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n if (this === b) return true\n return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n var str = ''\n var max = exports.INSPECT_MAX_BYTES\n if (this.length > 0) {\n str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n if (this.length > max) str += ' ... '\n }\n return ''\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n if (!Buffer.isBuffer(target)) {\n throw new TypeError('Argument must be a Buffer')\n }\n\n if (start === undefined) {\n start = 0\n }\n if (end === undefined) {\n end = target ? target.length : 0\n }\n if (thisStart === undefined) {\n thisStart = 0\n }\n if (thisEnd === undefined) {\n thisEnd = this.length\n }\n\n if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n throw new RangeError('out of range index')\n }\n\n if (thisStart >= thisEnd && start >= end) {\n return 0\n }\n if (thisStart >= thisEnd) {\n return -1\n }\n if (start >= end) {\n return 1\n }\n\n start >>>= 0\n end >>>= 0\n thisStart >>>= 0\n thisEnd >>>= 0\n\n if (this === target) return 0\n\n var x = thisEnd - thisStart\n var y = end - start\n var len = Math.min(x, y)\n\n var thisCopy = this.slice(thisStart, thisEnd)\n var targetCopy = target.slice(start, end)\n\n for (var i = 0; i < len; ++i) {\n if (thisCopy[i] !== targetCopy[i]) {\n x = thisCopy[i]\n y = targetCopy[i]\n break\n }\n }\n\n if (x < y) return -1\n if (y < x) return 1\n return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n // Empty buffer means no match\n if (buffer.length === 0) return -1\n\n // Normalize byteOffset\n if (typeof byteOffset === 'string') {\n encoding = byteOffset\n byteOffset = 0\n } else if (byteOffset > 0x7fffffff) {\n byteOffset = 0x7fffffff\n } else if (byteOffset < -0x80000000) {\n byteOffset = -0x80000000\n }\n byteOffset = +byteOffset // Coerce to Number.\n if (isNaN(byteOffset)) {\n // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n byteOffset = dir ? 0 : (buffer.length - 1)\n }\n\n // Normalize byteOffset: negative offsets start from the end of the buffer\n if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n if (byteOffset >= buffer.length) {\n if (dir) return -1\n else byteOffset = buffer.length - 1\n } else if (byteOffset < 0) {\n if (dir) byteOffset = 0\n else return -1\n }\n\n // Normalize val\n if (typeof val === 'string') {\n val = Buffer.from(val, encoding)\n }\n\n // Finally, search either indexOf (if dir is true) or lastIndexOf\n if (Buffer.isBuffer(val)) {\n // Special case: looking for empty string/buffer always fails\n if (val.length === 0) {\n return -1\n }\n return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n } else if (typeof val === 'number') {\n val = val & 0xFF // Search for a byte value [0-255]\n if (Buffer.TYPED_ARRAY_SUPPORT &&\n typeof Uint8Array.prototype.indexOf === 'function') {\n if (dir) {\n return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n } else {\n return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n }\n }\n return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n }\n\n throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n var indexSize = 1\n var arrLength = arr.length\n var valLength = val.length\n\n if (encoding !== undefined) {\n encoding = String(encoding).toLowerCase()\n if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n encoding === 'utf16le' || encoding === 'utf-16le') {\n if (arr.length < 2 || val.length < 2) {\n return -1\n }\n indexSize = 2\n arrLength /= 2\n valLength /= 2\n byteOffset /= 2\n }\n }\n\n function read (buf, i) {\n if (indexSize === 1) {\n return buf[i]\n } else {\n return buf.readUInt16BE(i * indexSize)\n }\n }\n\n var i\n if (dir) {\n var foundIndex = -1\n for (i = byteOffset; i < arrLength; i++) {\n if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n if (foundIndex === -1) foundIndex = i\n if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n } else {\n if (foundIndex !== -1) i -= i - foundIndex\n foundIndex = -1\n }\n }\n } else {\n if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n for (i = byteOffset; i >= 0; i--) {\n var found = true\n for (var j = 0; j < valLength; j++) {\n if (read(arr, i + j) !== read(val, j)) {\n found = false\n break\n }\n }\n if (found) return i\n }\n }\n\n return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n offset = Number(offset) || 0\n var remaining = buf.length - offset\n if (!length) {\n length = remaining\n } else {\n length = Number(length)\n if (length > remaining) {\n length = remaining\n }\n }\n\n // must be an even number of digits\n var strLen = string.length\n if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n if (length > strLen / 2) {\n length = strLen / 2\n }\n for (var i = 0; i < length; ++i) {\n var parsed = parseInt(string.substr(i * 2, 2), 16)\n if (isNaN(parsed)) return i\n buf[offset + i] = parsed\n }\n return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n // Buffer#write(string)\n if (offset === undefined) {\n encoding = 'utf8'\n length = this.length\n offset = 0\n // Buffer#write(string, encoding)\n } else if (length === undefined && typeof offset === 'string') {\n encoding = offset\n length = this.length\n offset = 0\n // Buffer#write(string, offset[, length][, encoding])\n } else if (isFinite(offset)) {\n offset = offset | 0\n if (isFinite(length)) {\n length = length | 0\n if (encoding === undefined) encoding = 'utf8'\n } else {\n encoding = length\n length = undefined\n }\n // legacy write(string, encoding, offset, length) - remove in v0.13\n } else {\n throw new Error(\n 'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n )\n }\n\n var remaining = this.length - offset\n if (length === undefined || length > remaining) length = remaining\n\n if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n throw new RangeError('Attempt to write outside buffer bounds')\n }\n\n if (!encoding) encoding = 'utf8'\n\n var loweredCase = false\n for (;;) {\n switch (encoding) {\n case 'hex':\n return hexWrite(this, string, offset, length)\n\n case 'utf8':\n case 'utf-8':\n return utf8Write(this, string, offset, length)\n\n case 'ascii':\n return asciiWrite(this, string, offset, length)\n\n case 'latin1':\n case 'binary':\n return latin1Write(this, string, offset, length)\n\n case 'base64':\n // Warning: maxLength not taken into account in base64Write\n return base64Write(this, string, offset, length)\n\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return ucs2Write(this, string, offset, length)\n\n default:\n if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n encoding = ('' + encoding).toLowerCase()\n loweredCase = true\n }\n }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n return {\n type: 'Buffer',\n data: Array.prototype.slice.call(this._arr || this, 0)\n }\n}\n\nfunction base64Slice (buf, start, end) {\n if (start === 0 && end === buf.length) {\n return base64.fromByteArray(buf)\n } else {\n return base64.fromByteArray(buf.slice(start, end))\n }\n}\n\nfunction utf8Slice (buf, start, end) {\n end = Math.min(buf.length, end)\n var res = []\n\n var i = start\n while (i < end) {\n var firstByte = buf[i]\n var codePoint = null\n var bytesPerSequence = (firstByte > 0xEF) ? 4\n : (firstByte > 0xDF) ? 3\n : (firstByte > 0xBF) ? 2\n : 1\n\n if (i + bytesPerSequence <= end) {\n var secondByte, thirdByte, fourthByte, tempCodePoint\n\n switch (bytesPerSequence) {\n case 1:\n if (firstByte < 0x80) {\n codePoint = firstByte\n }\n break\n case 2:\n secondByte = buf[i + 1]\n if ((secondByte & 0xC0) === 0x80) {\n tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n if (tempCodePoint > 0x7F) {\n codePoint = tempCodePoint\n }\n }\n break\n case 3:\n secondByte = buf[i + 1]\n thirdByte = buf[i + 2]\n if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n codePoint = tempCodePoint\n }\n }\n break\n case 4:\n secondByte = buf[i + 1]\n thirdByte = buf[i + 2]\n fourthByte = buf[i + 3]\n if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n codePoint = tempCodePoint\n }\n }\n }\n }\n\n if (codePoint === null) {\n // we did not generate a valid codePoint so insert a\n // replacement char (U+FFFD) and advance only 1 byte\n codePoint = 0xFFFD\n bytesPerSequence = 1\n } else if (codePoint > 0xFFFF) {\n // encode to utf16 (surrogate pair dance)\n codePoint -= 0x10000\n res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n codePoint = 0xDC00 | codePoint & 0x3FF\n }\n\n res.push(codePoint)\n i += bytesPerSequence\n }\n\n return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n var len = codePoints.length\n if (len <= MAX_ARGUMENTS_LENGTH) {\n return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n }\n\n // Decode in chunks to avoid \"call stack size exceeded\".\n var res = ''\n var i = 0\n while (i < len) {\n res += String.fromCharCode.apply(\n String,\n codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n )\n }\n return res\n}\n\nfunction asciiSlice (buf, start, end) {\n var ret = ''\n end = Math.min(buf.length, end)\n\n for (var i = start; i < end; ++i) {\n ret += String.fromCharCode(buf[i] & 0x7F)\n }\n return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n var ret = ''\n end = Math.min(buf.length, end)\n\n for (var i = start; i < end; ++i) {\n ret += String.fromCharCode(buf[i])\n }\n return ret\n}\n\nfunction hexSlice (buf, start, end) {\n var len = buf.length\n\n if (!start || start < 0) start = 0\n if (!end || end < 0 || end > len) end = len\n\n var out = ''\n for (var i = start; i < end; ++i) {\n out += toHex(buf[i])\n }\n return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n var bytes = buf.slice(start, end)\n var res = ''\n for (var i = 0; i < bytes.length; i += 2) {\n res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n }\n return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n var len = this.length\n start = ~~start\n end = end === undefined ? len : ~~end\n\n if (start < 0) {\n start += len\n if (start < 0) start = 0\n } else if (start > len) {\n start = len\n }\n\n if (end < 0) {\n end += len\n if (end < 0) end = 0\n } else if (end > len) {\n end = len\n }\n\n if (end < start) end = start\n\n var newBuf\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n newBuf = this.subarray(start, end)\n newBuf.__proto__ = Buffer.prototype\n } else {\n var sliceLen = end - start\n newBuf = new Buffer(sliceLen, undefined)\n for (var i = 0; i < sliceLen; ++i) {\n newBuf[i] = this[i + start]\n }\n }\n\n return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n var val = this[offset]\n var mul = 1\n var i = 0\n while (++i < byteLength && (mul *= 0x100)) {\n val += this[offset + i] * mul\n }\n\n return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) {\n checkOffset(offset, byteLength, this.length)\n }\n\n var val = this[offset + --byteLength]\n var mul = 1\n while (byteLength > 0 && (mul *= 0x100)) {\n val += this[offset + --byteLength] * mul\n }\n\n return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 1, this.length)\n return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return ((this[offset]) |\n (this[offset + 1] << 8) |\n (this[offset + 2] << 16)) +\n (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return (this[offset] * 0x1000000) +\n ((this[offset + 1] << 16) |\n (this[offset + 2] << 8) |\n this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n var val = this[offset]\n var mul = 1\n var i = 0\n while (++i < byteLength && (mul *= 0x100)) {\n val += this[offset + i] * mul\n }\n mul *= 0x80\n\n if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n var i = byteLength\n var mul = 1\n var val = this[offset + --i]\n while (i > 0 && (mul *= 0x100)) {\n val += this[offset + --i] * mul\n }\n mul *= 0x80\n\n if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 1, this.length)\n if (!(this[offset] & 0x80)) return (this[offset])\n return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n var val = this[offset] | (this[offset + 1] << 8)\n return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n var val = this[offset + 1] | (this[offset] << 8)\n return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return (this[offset]) |\n (this[offset + 1] << 8) |\n (this[offset + 2] << 16) |\n (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return (this[offset] << 24) |\n (this[offset + 1] << 16) |\n (this[offset + 2] << 8) |\n (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 8, this.length)\n return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 8, this.length)\n return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) {\n var maxBytes = Math.pow(2, 8 * byteLength) - 1\n checkInt(this, value, offset, byteLength, maxBytes, 0)\n }\n\n var mul = 1\n var i = 0\n this[offset] = value & 0xFF\n while (++i < byteLength && (mul *= 0x100)) {\n this[offset + i] = (value / mul) & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) {\n var maxBytes = Math.pow(2, 8 * byteLength) - 1\n checkInt(this, value, offset, byteLength, maxBytes, 0)\n }\n\n var i = byteLength - 1\n var mul = 1\n this[offset + i] = value & 0xFF\n while (--i >= 0 && (mul *= 0x100)) {\n this[offset + i] = (value / mul) & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n this[offset] = (value & 0xff)\n return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n if (value < 0) value = 0xffff + value + 1\n for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n (littleEndian ? i : 1 - i) * 8\n }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value & 0xff)\n this[offset + 1] = (value >>> 8)\n } else {\n objectWriteUInt16(this, value, offset, true)\n }\n return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 8)\n this[offset + 1] = (value & 0xff)\n } else {\n objectWriteUInt16(this, value, offset, false)\n }\n return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n if (value < 0) value = 0xffffffff + value + 1\n for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset + 3] = (value >>> 24)\n this[offset + 2] = (value >>> 16)\n this[offset + 1] = (value >>> 8)\n this[offset] = (value & 0xff)\n } else {\n objectWriteUInt32(this, value, offset, true)\n }\n return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 24)\n this[offset + 1] = (value >>> 16)\n this[offset + 2] = (value >>> 8)\n this[offset + 3] = (value & 0xff)\n } else {\n objectWriteUInt32(this, value, offset, false)\n }\n return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) {\n var limit = Math.pow(2, 8 * byteLength - 1)\n\n checkInt(this, value, offset, byteLength, limit - 1, -limit)\n }\n\n var i = 0\n var mul = 1\n var sub = 0\n this[offset] = value & 0xFF\n while (++i < byteLength && (mul *= 0x100)) {\n if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n sub = 1\n }\n this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) {\n var limit = Math.pow(2, 8 * byteLength - 1)\n\n checkInt(this, value, offset, byteLength, limit - 1, -limit)\n }\n\n var i = byteLength - 1\n var mul = 1\n var sub = 0\n this[offset + i] = value & 0xFF\n while (--i >= 0 && (mul *= 0x100)) {\n if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n sub = 1\n }\n this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n if (value < 0) value = 0xff + value + 1\n this[offset] = (value & 0xff)\n return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value & 0xff)\n this[offset + 1] = (value >>> 8)\n } else {\n objectWriteUInt16(this, value, offset, true)\n }\n return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 8)\n this[offset + 1] = (value & 0xff)\n } else {\n objectWriteUInt16(this, value, offset, false)\n }\n return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value & 0xff)\n this[offset + 1] = (value >>> 8)\n this[offset + 2] = (value >>> 16)\n this[offset + 3] = (value >>> 24)\n } else {\n objectWriteUInt32(this, value, offset, true)\n }\n return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n if (value < 0) value = 0xffffffff + value + 1\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 24)\n this[offset + 1] = (value >>> 16)\n this[offset + 2] = (value >>> 8)\n this[offset + 3] = (value & 0xff)\n } else {\n objectWriteUInt32(this, value, offset, false)\n }\n return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n if (offset + ext > buf.length) throw new RangeError('Index out of range')\n if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n if (!noAssert) {\n checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n }\n ieee754.write(buf, value, offset, littleEndian, 23, 4)\n return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n if (!noAssert) {\n checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n }\n ieee754.write(buf, value, offset, littleEndian, 52, 8)\n return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n if (!start) start = 0\n if (!end && end !== 0) end = this.length\n if (targetStart >= target.length) targetStart = target.length\n if (!targetStart) targetStart = 0\n if (end > 0 && end < start) end = start\n\n // Copy 0 bytes; we're done\n if (end === start) return 0\n if (target.length === 0 || this.length === 0) return 0\n\n // Fatal error conditions\n if (targetStart < 0) {\n throw new RangeError('targetStart out of bounds')\n }\n if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n // Are we oob?\n if (end > this.length) end = this.length\n if (target.length - targetStart < end - start) {\n end = target.length - targetStart + start\n }\n\n var len = end - start\n var i\n\n if (this === target && start < targetStart && targetStart < end) {\n // descending copy from end\n for (i = len - 1; i >= 0; --i) {\n target[i + targetStart] = this[i + start]\n }\n } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n // ascending copy from start\n for (i = 0; i < len; ++i) {\n target[i + targetStart] = this[i + start]\n }\n } else {\n Uint8Array.prototype.set.call(\n target,\n this.subarray(start, start + len),\n targetStart\n )\n }\n\n return len\n}\n\n// Usage:\n// buffer.fill(number[, offset[, end]])\n// buffer.fill(buffer[, offset[, end]])\n// buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n // Handle string cases:\n if (typeof val === 'string') {\n if (typeof start === 'string') {\n encoding = start\n start = 0\n end = this.length\n } else if (typeof end === 'string') {\n encoding = end\n end = this.length\n }\n if (val.length === 1) {\n var code = val.charCodeAt(0)\n if (code < 256) {\n val = code\n }\n }\n if (encoding !== undefined && typeof encoding !== 'string') {\n throw new TypeError('encoding must be a string')\n }\n if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n throw new TypeError('Unknown encoding: ' + encoding)\n }\n } else if (typeof val === 'number') {\n val = val & 255\n }\n\n // Invalid ranges are not set to a default, so can range check early.\n if (start < 0 || this.length < start || this.length < end) {\n throw new RangeError('Out of range index')\n }\n\n if (end <= start) {\n return this\n }\n\n start = start >>> 0\n end = end === undefined ? this.length : end >>> 0\n\n if (!val) val = 0\n\n var i\n if (typeof val === 'number') {\n for (i = start; i < end; ++i) {\n this[i] = val\n }\n } else {\n var bytes = Buffer.isBuffer(val)\n ? val\n : utf8ToBytes(new Buffer(val, encoding).toString())\n var len = bytes.length\n for (i = 0; i < end - start; ++i) {\n this[i + start] = bytes[i % len]\n }\n }\n\n return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n // Node converts strings with length < 2 to ''\n if (str.length < 2) return ''\n // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n while (str.length % 4 !== 0) {\n str = str + '='\n }\n return str\n}\n\nfunction stringtrim (str) {\n if (str.trim) return str.trim()\n return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n if (n < 16) return '0' + n.toString(16)\n return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n units = units || Infinity\n var codePoint\n var length = string.length\n var leadSurrogate = null\n var bytes = []\n\n for (var i = 0; i < length; ++i) {\n codePoint = string.charCodeAt(i)\n\n // is surrogate component\n if (codePoint > 0xD7FF && codePoint < 0xE000) {\n // last char was a lead\n if (!leadSurrogate) {\n // no lead yet\n if (codePoint > 0xDBFF) {\n // unexpected trail\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n continue\n } else if (i + 1 === length) {\n // unpaired lead\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n continue\n }\n\n // valid lead\n leadSurrogate = codePoint\n\n continue\n }\n\n // 2 leads in a row\n if (codePoint < 0xDC00) {\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n leadSurrogate = codePoint\n continue\n }\n\n // valid surrogate pair\n codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n } else if (leadSurrogate) {\n // valid bmp char, but last char was a lead\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n }\n\n leadSurrogate = null\n\n // encode utf8\n if (codePoint < 0x80) {\n if ((units -= 1) < 0) break\n bytes.push(codePoint)\n } else if (codePoint < 0x800) {\n if ((units -= 2) < 0) break\n bytes.push(\n codePoint >> 0x6 | 0xC0,\n codePoint & 0x3F | 0x80\n )\n } else if (codePoint < 0x10000) {\n if ((units -= 3) < 0) break\n bytes.push(\n codePoint >> 0xC | 0xE0,\n codePoint >> 0x6 & 0x3F | 0x80,\n codePoint & 0x3F | 0x80\n )\n } else if (codePoint < 0x110000) {\n if ((units -= 4) < 0) break\n bytes.push(\n codePoint >> 0x12 | 0xF0,\n codePoint >> 0xC & 0x3F | 0x80,\n codePoint >> 0x6 & 0x3F | 0x80,\n codePoint & 0x3F | 0x80\n )\n } else {\n throw new Error('Invalid code point')\n }\n }\n\n return bytes\n}\n\nfunction asciiToBytes (str) {\n var byteArray = []\n for (var i = 0; i < str.length; ++i) {\n // Node's code seems to be doing this and not & 0x7F..\n byteArray.push(str.charCodeAt(i) & 0xFF)\n }\n return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n var c, hi, lo\n var byteArray = []\n for (var i = 0; i < str.length; ++i) {\n if ((units -= 2) < 0) break\n\n c = str.charCodeAt(i)\n hi = c >> 8\n lo = c % 256\n byteArray.push(lo)\n byteArray.push(hi)\n }\n\n return byteArray\n}\n\nfunction base64ToBytes (str) {\n return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n for (var i = 0; i < length; ++i) {\n if ((i + offset >= dst.length) || (i >= src.length)) break\n dst[i + offset] = src[i]\n }\n return i\n}\n\nfunction isnan (val) {\n return val !== val // eslint-disable-line no-self-compare\n}\n","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n lookup[i] = code[i]\n revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n var len = b64.length\n\n if (len % 4 > 0) {\n throw new Error('Invalid string. Length must be a multiple of 4')\n }\n\n // Trim off extra bytes after placeholder bytes are found\n // See: https://github.com/beatgammit/base64-js/issues/42\n var validLen = b64.indexOf('=')\n if (validLen === -1) validLen = len\n\n var placeHoldersLen = validLen === len\n ? 0\n : 4 - (validLen % 4)\n\n return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n var lens = getLens(b64)\n var validLen = lens[0]\n var placeHoldersLen = lens[1]\n return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n var tmp\n var lens = getLens(b64)\n var validLen = lens[0]\n var placeHoldersLen = lens[1]\n\n var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n var curByte = 0\n\n // if there are placeholders, only get up to the last complete 4 chars\n var len = placeHoldersLen > 0\n ? validLen - 4\n : validLen\n\n for (var i = 0; i < len; i += 4) {\n tmp =\n (revLookup[b64.charCodeAt(i)] << 18) |\n (revLookup[b64.charCodeAt(i + 1)] << 12) |\n (revLookup[b64.charCodeAt(i + 2)] << 6) |\n revLookup[b64.charCodeAt(i + 3)]\n arr[curByte++] = (tmp >> 16) & 0xFF\n arr[curByte++] = (tmp >> 8) & 0xFF\n arr[curByte++] = tmp & 0xFF\n }\n\n if (placeHoldersLen === 2) {\n tmp =\n (revLookup[b64.charCodeAt(i)] << 2) |\n (revLookup[b64.charCodeAt(i + 1)] >> 4)\n arr[curByte++] = tmp & 0xFF\n }\n\n if (placeHoldersLen === 1) {\n tmp =\n (revLookup[b64.charCodeAt(i)] << 10) |\n (revLookup[b64.charCodeAt(i + 1)] << 4) |\n (revLookup[b64.charCodeAt(i + 2)] >> 2)\n arr[curByte++] = (tmp >> 8) & 0xFF\n arr[curByte++] = tmp & 0xFF\n }\n\n return arr\n}\n\nfunction tripletToBase64 (num) {\n return lookup[num >> 18 & 0x3F] +\n lookup[num >> 12 & 0x3F] +\n lookup[num >> 6 & 0x3F] +\n lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n var tmp\n var output = []\n for (var i = start; i < end; i += 3) {\n tmp =\n ((uint8[i] << 16) & 0xFF0000) +\n ((uint8[i + 1] << 8) & 0xFF00) +\n (uint8[i + 2] & 0xFF)\n output.push(tripletToBase64(tmp))\n }\n return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n var tmp\n var len = uint8.length\n var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n var parts = []\n var maxChunkLength = 16383 // must be multiple of 3\n\n // go through the array every three bytes, we'll deal with trailing stuff later\n for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n parts.push(encodeChunk(\n uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)\n ))\n }\n\n // pad the end with zeros, but make sure to not forget the extra bytes\n if (extraBytes === 1) {\n tmp = uint8[len - 1]\n parts.push(\n lookup[tmp >> 2] +\n lookup[(tmp << 4) & 0x3F] +\n '=='\n )\n } else if (extraBytes === 2) {\n tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n parts.push(\n lookup[tmp >> 10] +\n lookup[(tmp >> 4) & 0x3F] +\n lookup[(tmp << 2) & 0x3F] +\n '='\n )\n }\n\n return parts.join('')\n}\n","exports.read = function (buffer, offset, isLE, mLen, nBytes) {\n var e, m\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var nBits = -7\n var i = isLE ? (nBytes - 1) : 0\n var d = isLE ? -1 : 1\n var s = buffer[offset + i]\n\n i += d\n\n e = s & ((1 << (-nBits)) - 1)\n s >>= (-nBits)\n nBits += eLen\n for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n m = e & ((1 << (-nBits)) - 1)\n e >>= (-nBits)\n nBits += mLen\n for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n if (e === 0) {\n e = 1 - eBias\n } else if (e === eMax) {\n return m ? NaN : ((s ? -1 : 1) * Infinity)\n } else {\n m = m + Math.pow(2, mLen)\n e = e - eBias\n }\n return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n var e, m, c\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n var i = isLE ? 0 : (nBytes - 1)\n var d = isLE ? 1 : -1\n var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n value = Math.abs(value)\n\n if (isNaN(value) || value === Infinity) {\n m = isNaN(value) ? 1 : 0\n e = eMax\n } else {\n e = Math.floor(Math.log(value) / Math.LN2)\n if (value * (c = Math.pow(2, -e)) < 1) {\n e--\n c *= 2\n }\n if (e + eBias >= 1) {\n value += rt / c\n } else {\n value += rt * Math.pow(2, 1 - eBias)\n }\n if (value * c >= 2) {\n e++\n c /= 2\n }\n\n if (e + eBias >= eMax) {\n m = 0\n e = eMax\n } else if (e + eBias >= 1) {\n m = ((value * c) - 1) * Math.pow(2, mLen)\n e = e + eBias\n } else {\n m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n e = 0\n }\n }\n\n for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n e = (e << mLen) | m\n eLen += mLen\n for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n buffer[offset + i - d] |= s * 128\n}\n","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n return toString.call(arr) == '[object Array]';\n};\n","'use strict';\n\nvar Type = require('../type');\n\nvar _hasOwnProperty = Object.prototype.hasOwnProperty;\nvar _toString = Object.prototype.toString;\n\nfunction resolveYamlOmap(data) {\n if (data === null) return true;\n\n var objectKeys = [], index, length, pair, pairKey, pairHasKey,\n object = data;\n\n for (index = 0, length = object.length; index < length; index += 1) {\n pair = object[index];\n pairHasKey = false;\n\n if (_toString.call(pair) !== '[object Object]') return false;\n\n for (pairKey in pair) {\n if (_hasOwnProperty.call(pair, pairKey)) {\n if (!pairHasKey) pairHasKey = true;\n else return false;\n }\n }\n\n if (!pairHasKey) return false;\n\n if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);\n else return false;\n }\n\n return true;\n}\n\nfunction constructYamlOmap(data) {\n return data !== null ? data : [];\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:omap', {\n kind: 'sequence',\n resolve: resolveYamlOmap,\n construct: constructYamlOmap\n});\n","'use strict';\n\nvar Type = require('../type');\n\nvar _toString = Object.prototype.toString;\n\nfunction resolveYamlPairs(data) {\n if (data === null) return true;\n\n var index, length, pair, keys, result,\n object = data;\n\n result = new Array(object.length);\n\n for (index = 0, length = object.length; index < length; index += 1) {\n pair = object[index];\n\n if (_toString.call(pair) !== '[object Object]') return false;\n\n keys = Object.keys(pair);\n\n if (keys.length !== 1) return false;\n\n result[index] = [ keys[0], pair[keys[0]] ];\n }\n\n return true;\n}\n\nfunction constructYamlPairs(data) {\n if (data === null) return [];\n\n var index, length, pair, keys, result,\n object = data;\n\n result = new Array(object.length);\n\n for (index = 0, length = object.length; index < length; index += 1) {\n pair = object[index];\n\n keys = Object.keys(pair);\n\n result[index] = [ keys[0], pair[keys[0]] ];\n }\n\n return result;\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:pairs', {\n kind: 'sequence',\n resolve: resolveYamlPairs,\n construct: constructYamlPairs\n});\n","'use strict';\n\nvar Type = require('../type');\n\nvar _hasOwnProperty = Object.prototype.hasOwnProperty;\n\nfunction resolveYamlSet(data) {\n if (data === null) return true;\n\n var key, object = data;\n\n for (key in object) {\n if (_hasOwnProperty.call(object, key)) {\n if (object[key] !== null) return false;\n }\n }\n\n return true;\n}\n\nfunction constructYamlSet(data) {\n return data !== null ? data : {};\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:set', {\n kind: 'mapping',\n resolve: resolveYamlSet,\n construct: constructYamlSet\n});\n","'use strict';\n\nvar Type = require('../../type');\n\nfunction resolveJavascriptUndefined() {\n return true;\n}\n\nfunction constructJavascriptUndefined() {\n /*eslint-disable no-undefined*/\n return undefined;\n}\n\nfunction representJavascriptUndefined() {\n return '';\n}\n\nfunction isUndefined(object) {\n return typeof object === 'undefined';\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:js/undefined', {\n kind: 'scalar',\n resolve: resolveJavascriptUndefined,\n construct: constructJavascriptUndefined,\n predicate: isUndefined,\n represent: representJavascriptUndefined\n});\n","'use strict';\n\nvar Type = require('../../type');\n\nfunction resolveJavascriptRegExp(data) {\n if (data === null) return false;\n if (data.length === 0) return false;\n\n var regexp = data,\n tail = /\\/([gim]*)$/.exec(data),\n modifiers = '';\n\n // if regexp starts with '/' it can have modifiers and must be properly closed\n // `/foo/gim` - modifiers tail can be maximum 3 chars\n if (regexp[0] === '/') {\n if (tail) modifiers = tail[1];\n\n if (modifiers.length > 3) return false;\n // if expression starts with /, is should be properly terminated\n if (regexp[regexp.length - modifiers.length - 1] !== '/') return false;\n }\n\n return true;\n}\n\nfunction constructJavascriptRegExp(data) {\n var regexp = data,\n tail = /\\/([gim]*)$/.exec(data),\n modifiers = '';\n\n // `/foo/gim` - tail can be maximum 4 chars\n if (regexp[0] === '/') {\n if (tail) modifiers = tail[1];\n regexp = regexp.slice(1, regexp.length - modifiers.length - 1);\n }\n\n return new RegExp(regexp, modifiers);\n}\n\nfunction representJavascriptRegExp(object /*, style*/) {\n var result = '/' + object.source + '/';\n\n if (object.global) result += 'g';\n if (object.multiline) result += 'm';\n if (object.ignoreCase) result += 'i';\n\n return result;\n}\n\nfunction isRegExp(object) {\n return Object.prototype.toString.call(object) === '[object RegExp]';\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:js/regexp', {\n kind: 'scalar',\n resolve: resolveJavascriptRegExp,\n construct: constructJavascriptRegExp,\n predicate: isRegExp,\n represent: representJavascriptRegExp\n});\n","'use strict';\n\nvar esprima;\n\n// Browserified version does not have esprima\n//\n// 1. For node.js just require module as deps\n// 2. For browser try to require mudule via external AMD system.\n// If not found - try to fallback to window.esprima. If not\n// found too - then fail to parse.\n//\ntry {\n // workaround to exclude package from browserify list.\n var _require = require;\n esprima = _require('esprima');\n} catch (_) {\n /*global window */\n if (typeof window !== 'undefined') esprima = window.esprima;\n}\n\nvar Type = require('../../type');\n\nfunction resolveJavascriptFunction(data) {\n if (data === null) return false;\n\n try {\n var source = '(' + data + ')',\n ast = esprima.parse(source, { range: true });\n\n if (ast.type !== 'Program' ||\n ast.body.length !== 1 ||\n ast.body[0].type !== 'ExpressionStatement' ||\n (ast.body[0].expression.type !== 'ArrowFunctionExpression' &&\n ast.body[0].expression.type !== 'FunctionExpression')) {\n return false;\n }\n\n return true;\n } catch (err) {\n return false;\n }\n}\n\nfunction constructJavascriptFunction(data) {\n /*jslint evil:true*/\n\n var source = '(' + data + ')',\n ast = esprima.parse(source, { range: true }),\n params = [],\n body;\n\n if (ast.type !== 'Program' ||\n ast.body.length !== 1 ||\n ast.body[0].type !== 'ExpressionStatement' ||\n (ast.body[0].expression.type !== 'ArrowFunctionExpression' &&\n ast.body[0].expression.type !== 'FunctionExpression')) {\n throw new Error('Failed to resolve function');\n }\n\n ast.body[0].expression.params.forEach(function (param) {\n params.push(param.name);\n });\n\n body = ast.body[0].expression.body.range;\n\n // Esprima's ranges include the first '{' and the last '}' characters on\n // function expressions. So cut them out.\n if (ast.body[0].expression.body.type === 'BlockStatement') {\n /*eslint-disable no-new-func*/\n return new Function(params, source.slice(body[0] + 1, body[1] - 1));\n }\n // ES6 arrow functions can omit the BlockStatement. In that case, just return\n // the body.\n /*eslint-disable no-new-func*/\n return new Function(params, 'return ' + source.slice(body[0], body[1]));\n}\n\nfunction representJavascriptFunction(object /*, style*/) {\n return object.toString();\n}\n\nfunction isFunction(object) {\n return Object.prototype.toString.call(object) === '[object Function]';\n}\n\nmodule.exports = new Type('tag:yaml.org,2002:js/function', {\n kind: 'scalar',\n resolve: resolveJavascriptFunction,\n construct: constructJavascriptFunction,\n predicate: isFunction,\n represent: representJavascriptFunction\n});\n","(function webpackUniversalModuleDefinition(root, factory) {\n/* istanbul ignore next */\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n/* istanbul ignore next */\n\telse if(typeof exports === 'object')\n\t\texports[\"esprima\"] = factory();\n\telse\n\t\troot[\"esprima\"] = factory();\n})(this, function() {\nreturn /******/ (function(modules) { // webpackBootstrap\n/******/ \t// The module cache\n/******/ \tvar installedModules = {};\n\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n\n/******/ \t\t// Check if module is in cache\n/* istanbul ignore if */\n/******/ \t\tif(installedModules[moduleId])\n/******/ \t\t\treturn installedModules[moduleId].exports;\n\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = installedModules[moduleId] = {\n/******/ \t\t\texports: {},\n/******/ \t\t\tid: moduleId,\n/******/ \t\t\tloaded: false\n/******/ \t\t};\n\n/******/ \t\t// Execute the module function\n/******/ \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n/******/ \t\t// Flag the module as loaded\n/******/ \t\tmodule.loaded = true;\n\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n\n\n/******/ \t// expose the modules object (__webpack_modules__)\n/******/ \t__webpack_require__.m = modules;\n\n/******/ \t// expose the module cache\n/******/ \t__webpack_require__.c = installedModules;\n\n/******/ \t// __webpack_public_path__\n/******/ \t__webpack_require__.p = \"\";\n\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(0);\n/******/ })\n/************************************************************************/\n/******/ ([\n/* 0 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n\t/*\n\t Copyright JS Foundation and other contributors, https://js.foundation/\n\n\t Redistribution and use in source and binary forms, with or without\n\t modification, are permitted provided that the following conditions are met:\n\n\t * Redistributions of source code must retain the above copyright\n\t notice, this list of conditions and the following disclaimer.\n\t * Redistributions in binary form must reproduce the above copyright\n\t notice, this list of conditions and the following disclaimer in the\n\t documentation and/or other materials provided with the distribution.\n\n\t THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\"\n\t AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\n\t IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\n\t ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY\n\t DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n\t (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n\t LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n\t ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n\t (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n\t THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\t*/\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar comment_handler_1 = __webpack_require__(1);\n\tvar jsx_parser_1 = __webpack_require__(3);\n\tvar parser_1 = __webpack_require__(8);\n\tvar tokenizer_1 = __webpack_require__(15);\n\tfunction parse(code, options, delegate) {\n\t var commentHandler = null;\n\t var proxyDelegate = function (node, metadata) {\n\t if (delegate) {\n\t delegate(node, metadata);\n\t }\n\t if (commentHandler) {\n\t commentHandler.visit(node, metadata);\n\t }\n\t };\n\t var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null;\n\t var collectComment = false;\n\t if (options) {\n\t collectComment = (typeof options.comment === 'boolean' && options.comment);\n\t var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment);\n\t if (collectComment || attachComment) {\n\t commentHandler = new comment_handler_1.CommentHandler();\n\t commentHandler.attach = attachComment;\n\t options.comment = true;\n\t parserDelegate = proxyDelegate;\n\t }\n\t }\n\t var isModule = false;\n\t if (options && typeof options.sourceType === 'string') {\n\t isModule = (options.sourceType === 'module');\n\t }\n\t var parser;\n\t if (options && typeof options.jsx === 'boolean' && options.jsx) {\n\t parser = new jsx_parser_1.JSXParser(code, options, parserDelegate);\n\t }\n\t else {\n\t parser = new parser_1.Parser(code, options, parserDelegate);\n\t }\n\t var program = isModule ? parser.parseModule() : parser.parseScript();\n\t var ast = program;\n\t if (collectComment && commentHandler) {\n\t ast.comments = commentHandler.comments;\n\t }\n\t if (parser.config.tokens) {\n\t ast.tokens = parser.tokens;\n\t }\n\t if (parser.config.tolerant) {\n\t ast.errors = parser.errorHandler.errors;\n\t }\n\t return ast;\n\t}\n\texports.parse = parse;\n\tfunction parseModule(code, options, delegate) {\n\t var parsingOptions = options || {};\n\t parsingOptions.sourceType = 'module';\n\t return parse(code, parsingOptions, delegate);\n\t}\n\texports.parseModule = parseModule;\n\tfunction parseScript(code, options, delegate) {\n\t var parsingOptions = options || {};\n\t parsingOptions.sourceType = 'script';\n\t return parse(code, parsingOptions, delegate);\n\t}\n\texports.parseScript = parseScript;\n\tfunction tokenize(code, options, delegate) {\n\t var tokenizer = new tokenizer_1.Tokenizer(code, options);\n\t var tokens;\n\t tokens = [];\n\t try {\n\t while (true) {\n\t var token = tokenizer.getNextToken();\n\t if (!token) {\n\t break;\n\t }\n\t if (delegate) {\n\t token = delegate(token);\n\t }\n\t tokens.push(token);\n\t }\n\t }\n\t catch (e) {\n\t tokenizer.errorHandler.tolerate(e);\n\t }\n\t if (tokenizer.errorHandler.tolerant) {\n\t tokens.errors = tokenizer.errors();\n\t }\n\t return tokens;\n\t}\n\texports.tokenize = tokenize;\n\tvar syntax_1 = __webpack_require__(2);\n\texports.Syntax = syntax_1.Syntax;\n\t// Sync with *.json manifests.\n\texports.version = '4.0.1';\n\n\n/***/ },\n/* 1 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar syntax_1 = __webpack_require__(2);\n\tvar CommentHandler = (function () {\n\t function CommentHandler() {\n\t this.attach = false;\n\t this.comments = [];\n\t this.stack = [];\n\t this.leading = [];\n\t this.trailing = [];\n\t }\n\t CommentHandler.prototype.insertInnerComments = function (node, metadata) {\n\t // innnerComments for properties empty block\n\t // `function a() {/** comments **\\/}`\n\t if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) {\n\t var innerComments = [];\n\t for (var i = this.leading.length - 1; i >= 0; --i) {\n\t var entry = this.leading[i];\n\t if (metadata.end.offset >= entry.start) {\n\t innerComments.unshift(entry.comment);\n\t this.leading.splice(i, 1);\n\t this.trailing.splice(i, 1);\n\t }\n\t }\n\t if (innerComments.length) {\n\t node.innerComments = innerComments;\n\t }\n\t }\n\t };\n\t CommentHandler.prototype.findTrailingComments = function (metadata) {\n\t var trailingComments = [];\n\t if (this.trailing.length > 0) {\n\t for (var i = this.trailing.length - 1; i >= 0; --i) {\n\t var entry_1 = this.trailing[i];\n\t if (entry_1.start >= metadata.end.offset) {\n\t trailingComments.unshift(entry_1.comment);\n\t }\n\t }\n\t this.trailing.length = 0;\n\t return trailingComments;\n\t }\n\t var entry = this.stack[this.stack.length - 1];\n\t if (entry && entry.node.trailingComments) {\n\t var firstComment = entry.node.trailingComments[0];\n\t if (firstComment && firstComment.range[0] >= metadata.end.offset) {\n\t trailingComments = entry.node.trailingComments;\n\t delete entry.node.trailingComments;\n\t }\n\t }\n\t return trailingComments;\n\t };\n\t CommentHandler.prototype.findLeadingComments = function (metadata) {\n\t var leadingComments = [];\n\t var target;\n\t while (this.stack.length > 0) {\n\t var entry = this.stack[this.stack.length - 1];\n\t if (entry && entry.start >= metadata.start.offset) {\n\t target = entry.node;\n\t this.stack.pop();\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t if (target) {\n\t var count = target.leadingComments ? target.leadingComments.length : 0;\n\t for (var i = count - 1; i >= 0; --i) {\n\t var comment = target.leadingComments[i];\n\t if (comment.range[1] <= metadata.start.offset) {\n\t leadingComments.unshift(comment);\n\t target.leadingComments.splice(i, 1);\n\t }\n\t }\n\t if (target.leadingComments && target.leadingComments.length === 0) {\n\t delete target.leadingComments;\n\t }\n\t return leadingComments;\n\t }\n\t for (var i = this.leading.length - 1; i >= 0; --i) {\n\t var entry = this.leading[i];\n\t if (entry.start <= metadata.start.offset) {\n\t leadingComments.unshift(entry.comment);\n\t this.leading.splice(i, 1);\n\t }\n\t }\n\t return leadingComments;\n\t };\n\t CommentHandler.prototype.visitNode = function (node, metadata) {\n\t if (node.type === syntax_1.Syntax.Program && node.body.length > 0) {\n\t return;\n\t }\n\t this.insertInnerComments(node, metadata);\n\t var trailingComments = this.findTrailingComments(metadata);\n\t var leadingComments = this.findLeadingComments(metadata);\n\t if (leadingComments.length > 0) {\n\t node.leadingComments = leadingComments;\n\t }\n\t if (trailingComments.length > 0) {\n\t node.trailingComments = trailingComments;\n\t }\n\t this.stack.push({\n\t node: node,\n\t start: metadata.start.offset\n\t });\n\t };\n\t CommentHandler.prototype.visitComment = function (node, metadata) {\n\t var type = (node.type[0] === 'L') ? 'Line' : 'Block';\n\t var comment = {\n\t type: type,\n\t value: node.value\n\t };\n\t if (node.range) {\n\t comment.range = node.range;\n\t }\n\t if (node.loc) {\n\t comment.loc = node.loc;\n\t }\n\t this.comments.push(comment);\n\t if (this.attach) {\n\t var entry = {\n\t comment: {\n\t type: type,\n\t value: node.value,\n\t range: [metadata.start.offset, metadata.end.offset]\n\t },\n\t start: metadata.start.offset\n\t };\n\t if (node.loc) {\n\t entry.comment.loc = node.loc;\n\t }\n\t node.type = type;\n\t this.leading.push(entry);\n\t this.trailing.push(entry);\n\t }\n\t };\n\t CommentHandler.prototype.visit = function (node, metadata) {\n\t if (node.type === 'LineComment') {\n\t this.visitComment(node, metadata);\n\t }\n\t else if (node.type === 'BlockComment') {\n\t this.visitComment(node, metadata);\n\t }\n\t else if (this.attach) {\n\t this.visitNode(node, metadata);\n\t }\n\t };\n\t return CommentHandler;\n\t}());\n\texports.CommentHandler = CommentHandler;\n\n\n/***/ },\n/* 2 */\n/***/ function(module, exports) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\texports.Syntax = {\n\t AssignmentExpression: 'AssignmentExpression',\n\t AssignmentPattern: 'AssignmentPattern',\n\t ArrayExpression: 'ArrayExpression',\n\t ArrayPattern: 'ArrayPattern',\n\t ArrowFunctionExpression: 'ArrowFunctionExpression',\n\t AwaitExpression: 'AwaitExpression',\n\t BlockStatement: 'BlockStatement',\n\t BinaryExpression: 'BinaryExpression',\n\t BreakStatement: 'BreakStatement',\n\t CallExpression: 'CallExpression',\n\t CatchClause: 'CatchClause',\n\t ClassBody: 'ClassBody',\n\t ClassDeclaration: 'ClassDeclaration',\n\t ClassExpression: 'ClassExpression',\n\t ConditionalExpression: 'ConditionalExpression',\n\t ContinueStatement: 'ContinueStatement',\n\t DoWhileStatement: 'DoWhileStatement',\n\t DebuggerStatement: 'DebuggerStatement',\n\t EmptyStatement: 'EmptyStatement',\n\t ExportAllDeclaration: 'ExportAllDeclaration',\n\t ExportDefaultDeclaration: 'ExportDefaultDeclaration',\n\t ExportNamedDeclaration: 'ExportNamedDeclaration',\n\t ExportSpecifier: 'ExportSpecifier',\n\t ExpressionStatement: 'ExpressionStatement',\n\t ForStatement: 'ForStatement',\n\t ForOfStatement: 'ForOfStatement',\n\t ForInStatement: 'ForInStatement',\n\t FunctionDeclaration: 'FunctionDeclaration',\n\t FunctionExpression: 'FunctionExpression',\n\t Identifier: 'Identifier',\n\t IfStatement: 'IfStatement',\n\t ImportDeclaration: 'ImportDeclaration',\n\t ImportDefaultSpecifier: 'ImportDefaultSpecifier',\n\t ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',\n\t ImportSpecifier: 'ImportSpecifier',\n\t Literal: 'Literal',\n\t LabeledStatement: 'LabeledStatement',\n\t LogicalExpression: 'LogicalExpression',\n\t MemberExpression: 'MemberExpression',\n\t MetaProperty: 'MetaProperty',\n\t MethodDefinition: 'MethodDefinition',\n\t NewExpression: 'NewExpression',\n\t ObjectExpression: 'ObjectExpression',\n\t ObjectPattern: 'ObjectPattern',\n\t Program: 'Program',\n\t Property: 'Property',\n\t RestElement: 'RestElement',\n\t ReturnStatement: 'ReturnStatement',\n\t SequenceExpression: 'SequenceExpression',\n\t SpreadElement: 'SpreadElement',\n\t Super: 'Super',\n\t SwitchCase: 'SwitchCase',\n\t SwitchStatement: 'SwitchStatement',\n\t TaggedTemplateExpression: 'TaggedTemplateExpression',\n\t TemplateElement: 'TemplateElement',\n\t TemplateLiteral: 'TemplateLiteral',\n\t ThisExpression: 'ThisExpression',\n\t ThrowStatement: 'ThrowStatement',\n\t TryStatement: 'TryStatement',\n\t UnaryExpression: 'UnaryExpression',\n\t UpdateExpression: 'UpdateExpression',\n\t VariableDeclaration: 'VariableDeclaration',\n\t VariableDeclarator: 'VariableDeclarator',\n\t WhileStatement: 'WhileStatement',\n\t WithStatement: 'WithStatement',\n\t YieldExpression: 'YieldExpression'\n\t};\n\n\n/***/ },\n/* 3 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n/* istanbul ignore next */\n\tvar __extends = (this && this.__extends) || (function () {\n\t var extendStatics = Object.setPrototypeOf ||\n\t ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n\t function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n\t return function (d, b) {\n\t extendStatics(d, b);\n\t function __() { this.constructor = d; }\n\t d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n\t };\n\t})();\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar character_1 = __webpack_require__(4);\n\tvar JSXNode = __webpack_require__(5);\n\tvar jsx_syntax_1 = __webpack_require__(6);\n\tvar Node = __webpack_require__(7);\n\tvar parser_1 = __webpack_require__(8);\n\tvar token_1 = __webpack_require__(13);\n\tvar xhtml_entities_1 = __webpack_require__(14);\n\ttoken_1.TokenName[100 /* Identifier */] = 'JSXIdentifier';\n\ttoken_1.TokenName[101 /* Text */] = 'JSXText';\n\t// Fully qualified element name, e.g. returns \"svg:path\"\n\tfunction getQualifiedElementName(elementName) {\n\t var qualifiedName;\n\t switch (elementName.type) {\n\t case jsx_syntax_1.JSXSyntax.JSXIdentifier:\n\t var id = elementName;\n\t qualifiedName = id.name;\n\t break;\n\t case jsx_syntax_1.JSXSyntax.JSXNamespacedName:\n\t var ns = elementName;\n\t qualifiedName = getQualifiedElementName(ns.namespace) + ':' +\n\t getQualifiedElementName(ns.name);\n\t break;\n\t case jsx_syntax_1.JSXSyntax.JSXMemberExpression:\n\t var expr = elementName;\n\t qualifiedName = getQualifiedElementName(expr.object) + '.' +\n\t getQualifiedElementName(expr.property);\n\t break;\n\t /* istanbul ignore next */\n\t default:\n\t break;\n\t }\n\t return qualifiedName;\n\t}\n\tvar JSXParser = (function (_super) {\n\t __extends(JSXParser, _super);\n\t function JSXParser(code, options, delegate) {\n\t return _super.call(this, code, options, delegate) || this;\n\t }\n\t JSXParser.prototype.parsePrimaryExpression = function () {\n\t return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this);\n\t };\n\t JSXParser.prototype.startJSX = function () {\n\t // Unwind the scanner before the lookahead token.\n\t this.scanner.index = this.startMarker.index;\n\t this.scanner.lineNumber = this.startMarker.line;\n\t this.scanner.lineStart = this.startMarker.index - this.startMarker.column;\n\t };\n\t JSXParser.prototype.finishJSX = function () {\n\t // Prime the next lookahead.\n\t this.nextToken();\n\t };\n\t JSXParser.prototype.reenterJSX = function () {\n\t this.startJSX();\n\t this.expectJSX('}');\n\t // Pop the closing '}' added from the lookahead.\n\t if (this.config.tokens) {\n\t this.tokens.pop();\n\t }\n\t };\n\t JSXParser.prototype.createJSXNode = function () {\n\t this.collectComments();\n\t return {\n\t index: this.scanner.index,\n\t line: this.scanner.lineNumber,\n\t column: this.scanner.index - this.scanner.lineStart\n\t };\n\t };\n\t JSXParser.prototype.createJSXChildNode = function () {\n\t return {\n\t index: this.scanner.index,\n\t line: this.scanner.lineNumber,\n\t column: this.scanner.index - this.scanner.lineStart\n\t };\n\t };\n\t JSXParser.prototype.scanXHTMLEntity = function (quote) {\n\t var result = '&';\n\t var valid = true;\n\t var terminated = false;\n\t var numeric = false;\n\t var hex = false;\n\t while (!this.scanner.eof() && valid && !terminated) {\n\t var ch = this.scanner.source[this.scanner.index];\n\t if (ch === quote) {\n\t break;\n\t }\n\t terminated = (ch === ';');\n\t result += ch;\n\t ++this.scanner.index;\n\t if (!terminated) {\n\t switch (result.length) {\n\t case 2:\n\t // e.g. '{'\n\t numeric = (ch === '#');\n\t break;\n\t case 3:\n\t if (numeric) {\n\t // e.g. 'A'\n\t hex = (ch === 'x');\n\t valid = hex || character_1.Character.isDecimalDigit(ch.charCodeAt(0));\n\t numeric = numeric && !hex;\n\t }\n\t break;\n\t default:\n\t valid = valid && !(numeric && !character_1.Character.isDecimalDigit(ch.charCodeAt(0)));\n\t valid = valid && !(hex && !character_1.Character.isHexDigit(ch.charCodeAt(0)));\n\t break;\n\t }\n\t }\n\t }\n\t if (valid && terminated && result.length > 2) {\n\t // e.g. 'A' becomes just '#x41'\n\t var str = result.substr(1, result.length - 2);\n\t if (numeric && str.length > 1) {\n\t result = String.fromCharCode(parseInt(str.substr(1), 10));\n\t }\n\t else if (hex && str.length > 2) {\n\t result = String.fromCharCode(parseInt('0' + str.substr(1), 16));\n\t }\n\t else if (!numeric && !hex && xhtml_entities_1.XHTMLEntities[str]) {\n\t result = xhtml_entities_1.XHTMLEntities[str];\n\t }\n\t }\n\t return result;\n\t };\n\t // Scan the next JSX token. This replaces Scanner#lex when in JSX mode.\n\t JSXParser.prototype.lexJSX = function () {\n\t var cp = this.scanner.source.charCodeAt(this.scanner.index);\n\t // < > / : = { }\n\t if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) {\n\t var value = this.scanner.source[this.scanner.index++];\n\t return {\n\t type: 7 /* Punctuator */,\n\t value: value,\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: this.scanner.lineStart,\n\t start: this.scanner.index - 1,\n\t end: this.scanner.index\n\t };\n\t }\n\t // \" '\n\t if (cp === 34 || cp === 39) {\n\t var start = this.scanner.index;\n\t var quote = this.scanner.source[this.scanner.index++];\n\t var str = '';\n\t while (!this.scanner.eof()) {\n\t var ch = this.scanner.source[this.scanner.index++];\n\t if (ch === quote) {\n\t break;\n\t }\n\t else if (ch === '&') {\n\t str += this.scanXHTMLEntity(quote);\n\t }\n\t else {\n\t str += ch;\n\t }\n\t }\n\t return {\n\t type: 8 /* StringLiteral */,\n\t value: str,\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: this.scanner.lineStart,\n\t start: start,\n\t end: this.scanner.index\n\t };\n\t }\n\t // ... or .\n\t if (cp === 46) {\n\t var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1);\n\t var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2);\n\t var value = (n1 === 46 && n2 === 46) ? '...' : '.';\n\t var start = this.scanner.index;\n\t this.scanner.index += value.length;\n\t return {\n\t type: 7 /* Punctuator */,\n\t value: value,\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: this.scanner.lineStart,\n\t start: start,\n\t end: this.scanner.index\n\t };\n\t }\n\t // `\n\t if (cp === 96) {\n\t // Only placeholder, since it will be rescanned as a real assignment expression.\n\t return {\n\t type: 10 /* Template */,\n\t value: '',\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: this.scanner.lineStart,\n\t start: this.scanner.index,\n\t end: this.scanner.index\n\t };\n\t }\n\t // Identifer can not contain backslash (char code 92).\n\t if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) {\n\t var start = this.scanner.index;\n\t ++this.scanner.index;\n\t while (!this.scanner.eof()) {\n\t var ch = this.scanner.source.charCodeAt(this.scanner.index);\n\t if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) {\n\t ++this.scanner.index;\n\t }\n\t else if (ch === 45) {\n\t // Hyphen (char code 45) can be part of an identifier.\n\t ++this.scanner.index;\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t var id = this.scanner.source.slice(start, this.scanner.index);\n\t return {\n\t type: 100 /* Identifier */,\n\t value: id,\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: this.scanner.lineStart,\n\t start: start,\n\t end: this.scanner.index\n\t };\n\t }\n\t return this.scanner.lex();\n\t };\n\t JSXParser.prototype.nextJSXToken = function () {\n\t this.collectComments();\n\t this.startMarker.index = this.scanner.index;\n\t this.startMarker.line = this.scanner.lineNumber;\n\t this.startMarker.column = this.scanner.index - this.scanner.lineStart;\n\t var token = this.lexJSX();\n\t this.lastMarker.index = this.scanner.index;\n\t this.lastMarker.line = this.scanner.lineNumber;\n\t this.lastMarker.column = this.scanner.index - this.scanner.lineStart;\n\t if (this.config.tokens) {\n\t this.tokens.push(this.convertToken(token));\n\t }\n\t return token;\n\t };\n\t JSXParser.prototype.nextJSXText = function () {\n\t this.startMarker.index = this.scanner.index;\n\t this.startMarker.line = this.scanner.lineNumber;\n\t this.startMarker.column = this.scanner.index - this.scanner.lineStart;\n\t var start = this.scanner.index;\n\t var text = '';\n\t while (!this.scanner.eof()) {\n\t var ch = this.scanner.source[this.scanner.index];\n\t if (ch === '{' || ch === '<') {\n\t break;\n\t }\n\t ++this.scanner.index;\n\t text += ch;\n\t if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {\n\t ++this.scanner.lineNumber;\n\t if (ch === '\\r' && this.scanner.source[this.scanner.index] === '\\n') {\n\t ++this.scanner.index;\n\t }\n\t this.scanner.lineStart = this.scanner.index;\n\t }\n\t }\n\t this.lastMarker.index = this.scanner.index;\n\t this.lastMarker.line = this.scanner.lineNumber;\n\t this.lastMarker.column = this.scanner.index - this.scanner.lineStart;\n\t var token = {\n\t type: 101 /* Text */,\n\t value: text,\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: this.scanner.lineStart,\n\t start: start,\n\t end: this.scanner.index\n\t };\n\t if ((text.length > 0) && this.config.tokens) {\n\t this.tokens.push(this.convertToken(token));\n\t }\n\t return token;\n\t };\n\t JSXParser.prototype.peekJSXToken = function () {\n\t var state = this.scanner.saveState();\n\t this.scanner.scanComments();\n\t var next = this.lexJSX();\n\t this.scanner.restoreState(state);\n\t return next;\n\t };\n\t // Expect the next JSX token to match the specified punctuator.\n\t // If not, an exception will be thrown.\n\t JSXParser.prototype.expectJSX = function (value) {\n\t var token = this.nextJSXToken();\n\t if (token.type !== 7 /* Punctuator */ || token.value !== value) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t };\n\t // Return true if the next JSX token matches the specified punctuator.\n\t JSXParser.prototype.matchJSX = function (value) {\n\t var next = this.peekJSXToken();\n\t return next.type === 7 /* Punctuator */ && next.value === value;\n\t };\n\t JSXParser.prototype.parseJSXIdentifier = function () {\n\t var node = this.createJSXNode();\n\t var token = this.nextJSXToken();\n\t if (token.type !== 100 /* Identifier */) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t return this.finalize(node, new JSXNode.JSXIdentifier(token.value));\n\t };\n\t JSXParser.prototype.parseJSXElementName = function () {\n\t var node = this.createJSXNode();\n\t var elementName = this.parseJSXIdentifier();\n\t if (this.matchJSX(':')) {\n\t var namespace = elementName;\n\t this.expectJSX(':');\n\t var name_1 = this.parseJSXIdentifier();\n\t elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1));\n\t }\n\t else if (this.matchJSX('.')) {\n\t while (this.matchJSX('.')) {\n\t var object = elementName;\n\t this.expectJSX('.');\n\t var property = this.parseJSXIdentifier();\n\t elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property));\n\t }\n\t }\n\t return elementName;\n\t };\n\t JSXParser.prototype.parseJSXAttributeName = function () {\n\t var node = this.createJSXNode();\n\t var attributeName;\n\t var identifier = this.parseJSXIdentifier();\n\t if (this.matchJSX(':')) {\n\t var namespace = identifier;\n\t this.expectJSX(':');\n\t var name_2 = this.parseJSXIdentifier();\n\t attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2));\n\t }\n\t else {\n\t attributeName = identifier;\n\t }\n\t return attributeName;\n\t };\n\t JSXParser.prototype.parseJSXStringLiteralAttribute = function () {\n\t var node = this.createJSXNode();\n\t var token = this.nextJSXToken();\n\t if (token.type !== 8 /* StringLiteral */) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t var raw = this.getTokenRaw(token);\n\t return this.finalize(node, new Node.Literal(token.value, raw));\n\t };\n\t JSXParser.prototype.parseJSXExpressionAttribute = function () {\n\t var node = this.createJSXNode();\n\t this.expectJSX('{');\n\t this.finishJSX();\n\t if (this.match('}')) {\n\t this.tolerateError('JSX attributes must only be assigned a non-empty expression');\n\t }\n\t var expression = this.parseAssignmentExpression();\n\t this.reenterJSX();\n\t return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));\n\t };\n\t JSXParser.prototype.parseJSXAttributeValue = function () {\n\t return this.matchJSX('{') ? this.parseJSXExpressionAttribute() :\n\t this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute();\n\t };\n\t JSXParser.prototype.parseJSXNameValueAttribute = function () {\n\t var node = this.createJSXNode();\n\t var name = this.parseJSXAttributeName();\n\t var value = null;\n\t if (this.matchJSX('=')) {\n\t this.expectJSX('=');\n\t value = this.parseJSXAttributeValue();\n\t }\n\t return this.finalize(node, new JSXNode.JSXAttribute(name, value));\n\t };\n\t JSXParser.prototype.parseJSXSpreadAttribute = function () {\n\t var node = this.createJSXNode();\n\t this.expectJSX('{');\n\t this.expectJSX('...');\n\t this.finishJSX();\n\t var argument = this.parseAssignmentExpression();\n\t this.reenterJSX();\n\t return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument));\n\t };\n\t JSXParser.prototype.parseJSXAttributes = function () {\n\t var attributes = [];\n\t while (!this.matchJSX('/') && !this.matchJSX('>')) {\n\t var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() :\n\t this.parseJSXNameValueAttribute();\n\t attributes.push(attribute);\n\t }\n\t return attributes;\n\t };\n\t JSXParser.prototype.parseJSXOpeningElement = function () {\n\t var node = this.createJSXNode();\n\t this.expectJSX('<');\n\t var name = this.parseJSXElementName();\n\t var attributes = this.parseJSXAttributes();\n\t var selfClosing = this.matchJSX('/');\n\t if (selfClosing) {\n\t this.expectJSX('/');\n\t }\n\t this.expectJSX('>');\n\t return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));\n\t };\n\t JSXParser.prototype.parseJSXBoundaryElement = function () {\n\t var node = this.createJSXNode();\n\t this.expectJSX('<');\n\t if (this.matchJSX('/')) {\n\t this.expectJSX('/');\n\t var name_3 = this.parseJSXElementName();\n\t this.expectJSX('>');\n\t return this.finalize(node, new JSXNode.JSXClosingElement(name_3));\n\t }\n\t var name = this.parseJSXElementName();\n\t var attributes = this.parseJSXAttributes();\n\t var selfClosing = this.matchJSX('/');\n\t if (selfClosing) {\n\t this.expectJSX('/');\n\t }\n\t this.expectJSX('>');\n\t return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));\n\t };\n\t JSXParser.prototype.parseJSXEmptyExpression = function () {\n\t var node = this.createJSXChildNode();\n\t this.collectComments();\n\t this.lastMarker.index = this.scanner.index;\n\t this.lastMarker.line = this.scanner.lineNumber;\n\t this.lastMarker.column = this.scanner.index - this.scanner.lineStart;\n\t return this.finalize(node, new JSXNode.JSXEmptyExpression());\n\t };\n\t JSXParser.prototype.parseJSXExpressionContainer = function () {\n\t var node = this.createJSXNode();\n\t this.expectJSX('{');\n\t var expression;\n\t if (this.matchJSX('}')) {\n\t expression = this.parseJSXEmptyExpression();\n\t this.expectJSX('}');\n\t }\n\t else {\n\t this.finishJSX();\n\t expression = this.parseAssignmentExpression();\n\t this.reenterJSX();\n\t }\n\t return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));\n\t };\n\t JSXParser.prototype.parseJSXChildren = function () {\n\t var children = [];\n\t while (!this.scanner.eof()) {\n\t var node = this.createJSXChildNode();\n\t var token = this.nextJSXText();\n\t if (token.start < token.end) {\n\t var raw = this.getTokenRaw(token);\n\t var child = this.finalize(node, new JSXNode.JSXText(token.value, raw));\n\t children.push(child);\n\t }\n\t if (this.scanner.source[this.scanner.index] === '{') {\n\t var container = this.parseJSXExpressionContainer();\n\t children.push(container);\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t return children;\n\t };\n\t JSXParser.prototype.parseComplexJSXElement = function (el) {\n\t var stack = [];\n\t while (!this.scanner.eof()) {\n\t el.children = el.children.concat(this.parseJSXChildren());\n\t var node = this.createJSXChildNode();\n\t var element = this.parseJSXBoundaryElement();\n\t if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) {\n\t var opening = element;\n\t if (opening.selfClosing) {\n\t var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null));\n\t el.children.push(child);\n\t }\n\t else {\n\t stack.push(el);\n\t el = { node: node, opening: opening, closing: null, children: [] };\n\t }\n\t }\n\t if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) {\n\t el.closing = element;\n\t var open_1 = getQualifiedElementName(el.opening.name);\n\t var close_1 = getQualifiedElementName(el.closing.name);\n\t if (open_1 !== close_1) {\n\t this.tolerateError('Expected corresponding JSX closing tag for %0', open_1);\n\t }\n\t if (stack.length > 0) {\n\t var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing));\n\t el = stack[stack.length - 1];\n\t el.children.push(child);\n\t stack.pop();\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t }\n\t return el;\n\t };\n\t JSXParser.prototype.parseJSXElement = function () {\n\t var node = this.createJSXNode();\n\t var opening = this.parseJSXOpeningElement();\n\t var children = [];\n\t var closing = null;\n\t if (!opening.selfClosing) {\n\t var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children });\n\t children = el.children;\n\t closing = el.closing;\n\t }\n\t return this.finalize(node, new JSXNode.JSXElement(opening, children, closing));\n\t };\n\t JSXParser.prototype.parseJSXRoot = function () {\n\t // Pop the opening '<' added from the lookahead.\n\t if (this.config.tokens) {\n\t this.tokens.pop();\n\t }\n\t this.startJSX();\n\t var element = this.parseJSXElement();\n\t this.finishJSX();\n\t return element;\n\t };\n\t JSXParser.prototype.isStartOfExpression = function () {\n\t return _super.prototype.isStartOfExpression.call(this) || this.match('<');\n\t };\n\t return JSXParser;\n\t}(parser_1.Parser));\n\texports.JSXParser = JSXParser;\n\n\n/***/ },\n/* 4 */\n/***/ function(module, exports) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\t// See also tools/generate-unicode-regex.js.\n\tvar Regex = {\n\t // Unicode v8.0.0 NonAsciiIdentifierStart:\n\t NonAsciiIdentifierStart: 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= {\n\t /* tslint:disable:no-bitwise */\n\t fromCodePoint: function (cp) {\n\t return (cp < 0x10000) ? String.fromCharCode(cp) :\n\t String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) +\n\t String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023));\n\t },\n\t // https://tc39.github.io/ecma262/#sec-white-space\n\t isWhiteSpace: function (cp) {\n\t return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) ||\n\t (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0);\n\t },\n\t // https://tc39.github.io/ecma262/#sec-line-terminators\n\t isLineTerminator: function (cp) {\n\t return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029);\n\t },\n\t // https://tc39.github.io/ecma262/#sec-names-and-keywords\n\t isIdentifierStart: function (cp) {\n\t return (cp === 0x24) || (cp === 0x5F) ||\n\t (cp >= 0x41 && cp <= 0x5A) ||\n\t (cp >= 0x61 && cp <= 0x7A) ||\n\t (cp === 0x5C) ||\n\t ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp)));\n\t },\n\t isIdentifierPart: function (cp) {\n\t return (cp === 0x24) || (cp === 0x5F) ||\n\t (cp >= 0x41 && cp <= 0x5A) ||\n\t (cp >= 0x61 && cp <= 0x7A) ||\n\t (cp >= 0x30 && cp <= 0x39) ||\n\t (cp === 0x5C) ||\n\t ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp)));\n\t },\n\t // https://tc39.github.io/ecma262/#sec-literals-numeric-literals\n\t isDecimalDigit: function (cp) {\n\t return (cp >= 0x30 && cp <= 0x39); // 0..9\n\t },\n\t isHexDigit: function (cp) {\n\t return (cp >= 0x30 && cp <= 0x39) ||\n\t (cp >= 0x41 && cp <= 0x46) ||\n\t (cp >= 0x61 && cp <= 0x66); // a..f\n\t },\n\t isOctalDigit: function (cp) {\n\t return (cp >= 0x30 && cp <= 0x37); // 0..7\n\t }\n\t};\n\n\n/***/ },\n/* 5 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar jsx_syntax_1 = __webpack_require__(6);\n\t/* tslint:disable:max-classes-per-file */\n\tvar JSXClosingElement = (function () {\n\t function JSXClosingElement(name) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement;\n\t this.name = name;\n\t }\n\t return JSXClosingElement;\n\t}());\n\texports.JSXClosingElement = JSXClosingElement;\n\tvar JSXElement = (function () {\n\t function JSXElement(openingElement, children, closingElement) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXElement;\n\t this.openingElement = openingElement;\n\t this.children = children;\n\t this.closingElement = closingElement;\n\t }\n\t return JSXElement;\n\t}());\n\texports.JSXElement = JSXElement;\n\tvar JSXEmptyExpression = (function () {\n\t function JSXEmptyExpression() {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression;\n\t }\n\t return JSXEmptyExpression;\n\t}());\n\texports.JSXEmptyExpression = JSXEmptyExpression;\n\tvar JSXExpressionContainer = (function () {\n\t function JSXExpressionContainer(expression) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer;\n\t this.expression = expression;\n\t }\n\t return JSXExpressionContainer;\n\t}());\n\texports.JSXExpressionContainer = JSXExpressionContainer;\n\tvar JSXIdentifier = (function () {\n\t function JSXIdentifier(name) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier;\n\t this.name = name;\n\t }\n\t return JSXIdentifier;\n\t}());\n\texports.JSXIdentifier = JSXIdentifier;\n\tvar JSXMemberExpression = (function () {\n\t function JSXMemberExpression(object, property) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression;\n\t this.object = object;\n\t this.property = property;\n\t }\n\t return JSXMemberExpression;\n\t}());\n\texports.JSXMemberExpression = JSXMemberExpression;\n\tvar JSXAttribute = (function () {\n\t function JSXAttribute(name, value) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXAttribute;\n\t this.name = name;\n\t this.value = value;\n\t }\n\t return JSXAttribute;\n\t}());\n\texports.JSXAttribute = JSXAttribute;\n\tvar JSXNamespacedName = (function () {\n\t function JSXNamespacedName(namespace, name) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName;\n\t this.namespace = namespace;\n\t this.name = name;\n\t }\n\t return JSXNamespacedName;\n\t}());\n\texports.JSXNamespacedName = JSXNamespacedName;\n\tvar JSXOpeningElement = (function () {\n\t function JSXOpeningElement(name, selfClosing, attributes) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement;\n\t this.name = name;\n\t this.selfClosing = selfClosing;\n\t this.attributes = attributes;\n\t }\n\t return JSXOpeningElement;\n\t}());\n\texports.JSXOpeningElement = JSXOpeningElement;\n\tvar JSXSpreadAttribute = (function () {\n\t function JSXSpreadAttribute(argument) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute;\n\t this.argument = argument;\n\t }\n\t return JSXSpreadAttribute;\n\t}());\n\texports.JSXSpreadAttribute = JSXSpreadAttribute;\n\tvar JSXText = (function () {\n\t function JSXText(value, raw) {\n\t this.type = jsx_syntax_1.JSXSyntax.JSXText;\n\t this.value = value;\n\t this.raw = raw;\n\t }\n\t return JSXText;\n\t}());\n\texports.JSXText = JSXText;\n\n\n/***/ },\n/* 6 */\n/***/ function(module, exports) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\texports.JSXSyntax = {\n\t JSXAttribute: 'JSXAttribute',\n\t JSXClosingElement: 'JSXClosingElement',\n\t JSXElement: 'JSXElement',\n\t JSXEmptyExpression: 'JSXEmptyExpression',\n\t JSXExpressionContainer: 'JSXExpressionContainer',\n\t JSXIdentifier: 'JSXIdentifier',\n\t JSXMemberExpression: 'JSXMemberExpression',\n\t JSXNamespacedName: 'JSXNamespacedName',\n\t JSXOpeningElement: 'JSXOpeningElement',\n\t JSXSpreadAttribute: 'JSXSpreadAttribute',\n\t JSXText: 'JSXText'\n\t};\n\n\n/***/ },\n/* 7 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar syntax_1 = __webpack_require__(2);\n\t/* tslint:disable:max-classes-per-file */\n\tvar ArrayExpression = (function () {\n\t function ArrayExpression(elements) {\n\t this.type = syntax_1.Syntax.ArrayExpression;\n\t this.elements = elements;\n\t }\n\t return ArrayExpression;\n\t}());\n\texports.ArrayExpression = ArrayExpression;\n\tvar ArrayPattern = (function () {\n\t function ArrayPattern(elements) {\n\t this.type = syntax_1.Syntax.ArrayPattern;\n\t this.elements = elements;\n\t }\n\t return ArrayPattern;\n\t}());\n\texports.ArrayPattern = ArrayPattern;\n\tvar ArrowFunctionExpression = (function () {\n\t function ArrowFunctionExpression(params, body, expression) {\n\t this.type = syntax_1.Syntax.ArrowFunctionExpression;\n\t this.id = null;\n\t this.params = params;\n\t this.body = body;\n\t this.generator = false;\n\t this.expression = expression;\n\t this.async = false;\n\t }\n\t return ArrowFunctionExpression;\n\t}());\n\texports.ArrowFunctionExpression = ArrowFunctionExpression;\n\tvar AssignmentExpression = (function () {\n\t function AssignmentExpression(operator, left, right) {\n\t this.type = syntax_1.Syntax.AssignmentExpression;\n\t this.operator = operator;\n\t this.left = left;\n\t this.right = right;\n\t }\n\t return AssignmentExpression;\n\t}());\n\texports.AssignmentExpression = AssignmentExpression;\n\tvar AssignmentPattern = (function () {\n\t function AssignmentPattern(left, right) {\n\t this.type = syntax_1.Syntax.AssignmentPattern;\n\t this.left = left;\n\t this.right = right;\n\t }\n\t return AssignmentPattern;\n\t}());\n\texports.AssignmentPattern = AssignmentPattern;\n\tvar AsyncArrowFunctionExpression = (function () {\n\t function AsyncArrowFunctionExpression(params, body, expression) {\n\t this.type = syntax_1.Syntax.ArrowFunctionExpression;\n\t this.id = null;\n\t this.params = params;\n\t this.body = body;\n\t this.generator = false;\n\t this.expression = expression;\n\t this.async = true;\n\t }\n\t return AsyncArrowFunctionExpression;\n\t}());\n\texports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression;\n\tvar AsyncFunctionDeclaration = (function () {\n\t function AsyncFunctionDeclaration(id, params, body) {\n\t this.type = syntax_1.Syntax.FunctionDeclaration;\n\t this.id = id;\n\t this.params = params;\n\t this.body = body;\n\t this.generator = false;\n\t this.expression = false;\n\t this.async = true;\n\t }\n\t return AsyncFunctionDeclaration;\n\t}());\n\texports.AsyncFunctionDeclaration = AsyncFunctionDeclaration;\n\tvar AsyncFunctionExpression = (function () {\n\t function AsyncFunctionExpression(id, params, body) {\n\t this.type = syntax_1.Syntax.FunctionExpression;\n\t this.id = id;\n\t this.params = params;\n\t this.body = body;\n\t this.generator = false;\n\t this.expression = false;\n\t this.async = true;\n\t }\n\t return AsyncFunctionExpression;\n\t}());\n\texports.AsyncFunctionExpression = AsyncFunctionExpression;\n\tvar AwaitExpression = (function () {\n\t function AwaitExpression(argument) {\n\t this.type = syntax_1.Syntax.AwaitExpression;\n\t this.argument = argument;\n\t }\n\t return AwaitExpression;\n\t}());\n\texports.AwaitExpression = AwaitExpression;\n\tvar BinaryExpression = (function () {\n\t function BinaryExpression(operator, left, right) {\n\t var logical = (operator === '||' || operator === '&&');\n\t this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression;\n\t this.operator = operator;\n\t this.left = left;\n\t this.right = right;\n\t }\n\t return BinaryExpression;\n\t}());\n\texports.BinaryExpression = BinaryExpression;\n\tvar BlockStatement = (function () {\n\t function BlockStatement(body) {\n\t this.type = syntax_1.Syntax.BlockStatement;\n\t this.body = body;\n\t }\n\t return BlockStatement;\n\t}());\n\texports.BlockStatement = BlockStatement;\n\tvar BreakStatement = (function () {\n\t function BreakStatement(label) {\n\t this.type = syntax_1.Syntax.BreakStatement;\n\t this.label = label;\n\t }\n\t return BreakStatement;\n\t}());\n\texports.BreakStatement = BreakStatement;\n\tvar CallExpression = (function () {\n\t function CallExpression(callee, args) {\n\t this.type = syntax_1.Syntax.CallExpression;\n\t this.callee = callee;\n\t this.arguments = args;\n\t }\n\t return CallExpression;\n\t}());\n\texports.CallExpression = CallExpression;\n\tvar CatchClause = (function () {\n\t function CatchClause(param, body) {\n\t this.type = syntax_1.Syntax.CatchClause;\n\t this.param = param;\n\t this.body = body;\n\t }\n\t return CatchClause;\n\t}());\n\texports.CatchClause = CatchClause;\n\tvar ClassBody = (function () {\n\t function ClassBody(body) {\n\t this.type = syntax_1.Syntax.ClassBody;\n\t this.body = body;\n\t }\n\t return ClassBody;\n\t}());\n\texports.ClassBody = ClassBody;\n\tvar ClassDeclaration = (function () {\n\t function ClassDeclaration(id, superClass, body) {\n\t this.type = syntax_1.Syntax.ClassDeclaration;\n\t this.id = id;\n\t this.superClass = superClass;\n\t this.body = body;\n\t }\n\t return ClassDeclaration;\n\t}());\n\texports.ClassDeclaration = ClassDeclaration;\n\tvar ClassExpression = (function () {\n\t function ClassExpression(id, superClass, body) {\n\t this.type = syntax_1.Syntax.ClassExpression;\n\t this.id = id;\n\t this.superClass = superClass;\n\t this.body = body;\n\t }\n\t return ClassExpression;\n\t}());\n\texports.ClassExpression = ClassExpression;\n\tvar ComputedMemberExpression = (function () {\n\t function ComputedMemberExpression(object, property) {\n\t this.type = syntax_1.Syntax.MemberExpression;\n\t this.computed = true;\n\t this.object = object;\n\t this.property = property;\n\t }\n\t return ComputedMemberExpression;\n\t}());\n\texports.ComputedMemberExpression = ComputedMemberExpression;\n\tvar ConditionalExpression = (function () {\n\t function ConditionalExpression(test, consequent, alternate) {\n\t this.type = syntax_1.Syntax.ConditionalExpression;\n\t this.test = test;\n\t this.consequent = consequent;\n\t this.alternate = alternate;\n\t }\n\t return ConditionalExpression;\n\t}());\n\texports.ConditionalExpression = ConditionalExpression;\n\tvar ContinueStatement = (function () {\n\t function ContinueStatement(label) {\n\t this.type = syntax_1.Syntax.ContinueStatement;\n\t this.label = label;\n\t }\n\t return ContinueStatement;\n\t}());\n\texports.ContinueStatement = ContinueStatement;\n\tvar DebuggerStatement = (function () {\n\t function DebuggerStatement() {\n\t this.type = syntax_1.Syntax.DebuggerStatement;\n\t }\n\t return DebuggerStatement;\n\t}());\n\texports.DebuggerStatement = DebuggerStatement;\n\tvar Directive = (function () {\n\t function Directive(expression, directive) {\n\t this.type = syntax_1.Syntax.ExpressionStatement;\n\t this.expression = expression;\n\t this.directive = directive;\n\t }\n\t return Directive;\n\t}());\n\texports.Directive = Directive;\n\tvar DoWhileStatement = (function () {\n\t function DoWhileStatement(body, test) {\n\t this.type = syntax_1.Syntax.DoWhileStatement;\n\t this.body = body;\n\t this.test = test;\n\t }\n\t return DoWhileStatement;\n\t}());\n\texports.DoWhileStatement = DoWhileStatement;\n\tvar EmptyStatement = (function () {\n\t function EmptyStatement() {\n\t this.type = syntax_1.Syntax.EmptyStatement;\n\t }\n\t return EmptyStatement;\n\t}());\n\texports.EmptyStatement = EmptyStatement;\n\tvar ExportAllDeclaration = (function () {\n\t function ExportAllDeclaration(source) {\n\t this.type = syntax_1.Syntax.ExportAllDeclaration;\n\t this.source = source;\n\t }\n\t return ExportAllDeclaration;\n\t}());\n\texports.ExportAllDeclaration = ExportAllDeclaration;\n\tvar ExportDefaultDeclaration = (function () {\n\t function ExportDefaultDeclaration(declaration) {\n\t this.type = syntax_1.Syntax.ExportDefaultDeclaration;\n\t this.declaration = declaration;\n\t }\n\t return ExportDefaultDeclaration;\n\t}());\n\texports.ExportDefaultDeclaration = ExportDefaultDeclaration;\n\tvar ExportNamedDeclaration = (function () {\n\t function ExportNamedDeclaration(declaration, specifiers, source) {\n\t this.type = syntax_1.Syntax.ExportNamedDeclaration;\n\t this.declaration = declaration;\n\t this.specifiers = specifiers;\n\t this.source = source;\n\t }\n\t return ExportNamedDeclaration;\n\t}());\n\texports.ExportNamedDeclaration = ExportNamedDeclaration;\n\tvar ExportSpecifier = (function () {\n\t function ExportSpecifier(local, exported) {\n\t this.type = syntax_1.Syntax.ExportSpecifier;\n\t this.exported = exported;\n\t this.local = local;\n\t }\n\t return ExportSpecifier;\n\t}());\n\texports.ExportSpecifier = ExportSpecifier;\n\tvar ExpressionStatement = (function () {\n\t function ExpressionStatement(expression) {\n\t this.type = syntax_1.Syntax.ExpressionStatement;\n\t this.expression = expression;\n\t }\n\t return ExpressionStatement;\n\t}());\n\texports.ExpressionStatement = ExpressionStatement;\n\tvar ForInStatement = (function () {\n\t function ForInStatement(left, right, body) {\n\t this.type = syntax_1.Syntax.ForInStatement;\n\t this.left = left;\n\t this.right = right;\n\t this.body = body;\n\t this.each = false;\n\t }\n\t return ForInStatement;\n\t}());\n\texports.ForInStatement = ForInStatement;\n\tvar ForOfStatement = (function () {\n\t function ForOfStatement(left, right, body) {\n\t this.type = syntax_1.Syntax.ForOfStatement;\n\t this.left = left;\n\t this.right = right;\n\t this.body = body;\n\t }\n\t return ForOfStatement;\n\t}());\n\texports.ForOfStatement = ForOfStatement;\n\tvar ForStatement = (function () {\n\t function ForStatement(init, test, update, body) {\n\t this.type = syntax_1.Syntax.ForStatement;\n\t this.init = init;\n\t this.test = test;\n\t this.update = update;\n\t this.body = body;\n\t }\n\t return ForStatement;\n\t}());\n\texports.ForStatement = ForStatement;\n\tvar FunctionDeclaration = (function () {\n\t function FunctionDeclaration(id, params, body, generator) {\n\t this.type = syntax_1.Syntax.FunctionDeclaration;\n\t this.id = id;\n\t this.params = params;\n\t this.body = body;\n\t this.generator = generator;\n\t this.expression = false;\n\t this.async = false;\n\t }\n\t return FunctionDeclaration;\n\t}());\n\texports.FunctionDeclaration = FunctionDeclaration;\n\tvar FunctionExpression = (function () {\n\t function FunctionExpression(id, params, body, generator) {\n\t this.type = syntax_1.Syntax.FunctionExpression;\n\t this.id = id;\n\t this.params = params;\n\t this.body = body;\n\t this.generator = generator;\n\t this.expression = false;\n\t this.async = false;\n\t }\n\t return FunctionExpression;\n\t}());\n\texports.FunctionExpression = FunctionExpression;\n\tvar Identifier = (function () {\n\t function Identifier(name) {\n\t this.type = syntax_1.Syntax.Identifier;\n\t this.name = name;\n\t }\n\t return Identifier;\n\t}());\n\texports.Identifier = Identifier;\n\tvar IfStatement = (function () {\n\t function IfStatement(test, consequent, alternate) {\n\t this.type = syntax_1.Syntax.IfStatement;\n\t this.test = test;\n\t this.consequent = consequent;\n\t this.alternate = alternate;\n\t }\n\t return IfStatement;\n\t}());\n\texports.IfStatement = IfStatement;\n\tvar ImportDeclaration = (function () {\n\t function ImportDeclaration(specifiers, source) {\n\t this.type = syntax_1.Syntax.ImportDeclaration;\n\t this.specifiers = specifiers;\n\t this.source = source;\n\t }\n\t return ImportDeclaration;\n\t}());\n\texports.ImportDeclaration = ImportDeclaration;\n\tvar ImportDefaultSpecifier = (function () {\n\t function ImportDefaultSpecifier(local) {\n\t this.type = syntax_1.Syntax.ImportDefaultSpecifier;\n\t this.local = local;\n\t }\n\t return ImportDefaultSpecifier;\n\t}());\n\texports.ImportDefaultSpecifier = ImportDefaultSpecifier;\n\tvar ImportNamespaceSpecifier = (function () {\n\t function ImportNamespaceSpecifier(local) {\n\t this.type = syntax_1.Syntax.ImportNamespaceSpecifier;\n\t this.local = local;\n\t }\n\t return ImportNamespaceSpecifier;\n\t}());\n\texports.ImportNamespaceSpecifier = ImportNamespaceSpecifier;\n\tvar ImportSpecifier = (function () {\n\t function ImportSpecifier(local, imported) {\n\t this.type = syntax_1.Syntax.ImportSpecifier;\n\t this.local = local;\n\t this.imported = imported;\n\t }\n\t return ImportSpecifier;\n\t}());\n\texports.ImportSpecifier = ImportSpecifier;\n\tvar LabeledStatement = (function () {\n\t function LabeledStatement(label, body) {\n\t this.type = syntax_1.Syntax.LabeledStatement;\n\t this.label = label;\n\t this.body = body;\n\t }\n\t return LabeledStatement;\n\t}());\n\texports.LabeledStatement = LabeledStatement;\n\tvar Literal = (function () {\n\t function Literal(value, raw) {\n\t this.type = syntax_1.Syntax.Literal;\n\t this.value = value;\n\t this.raw = raw;\n\t }\n\t return Literal;\n\t}());\n\texports.Literal = Literal;\n\tvar MetaProperty = (function () {\n\t function MetaProperty(meta, property) {\n\t this.type = syntax_1.Syntax.MetaProperty;\n\t this.meta = meta;\n\t this.property = property;\n\t }\n\t return MetaProperty;\n\t}());\n\texports.MetaProperty = MetaProperty;\n\tvar MethodDefinition = (function () {\n\t function MethodDefinition(key, computed, value, kind, isStatic) {\n\t this.type = syntax_1.Syntax.MethodDefinition;\n\t this.key = key;\n\t this.computed = computed;\n\t this.value = value;\n\t this.kind = kind;\n\t this.static = isStatic;\n\t }\n\t return MethodDefinition;\n\t}());\n\texports.MethodDefinition = MethodDefinition;\n\tvar Module = (function () {\n\t function Module(body) {\n\t this.type = syntax_1.Syntax.Program;\n\t this.body = body;\n\t this.sourceType = 'module';\n\t }\n\t return Module;\n\t}());\n\texports.Module = Module;\n\tvar NewExpression = (function () {\n\t function NewExpression(callee, args) {\n\t this.type = syntax_1.Syntax.NewExpression;\n\t this.callee = callee;\n\t this.arguments = args;\n\t }\n\t return NewExpression;\n\t}());\n\texports.NewExpression = NewExpression;\n\tvar ObjectExpression = (function () {\n\t function ObjectExpression(properties) {\n\t this.type = syntax_1.Syntax.ObjectExpression;\n\t this.properties = properties;\n\t }\n\t return ObjectExpression;\n\t}());\n\texports.ObjectExpression = ObjectExpression;\n\tvar ObjectPattern = (function () {\n\t function ObjectPattern(properties) {\n\t this.type = syntax_1.Syntax.ObjectPattern;\n\t this.properties = properties;\n\t }\n\t return ObjectPattern;\n\t}());\n\texports.ObjectPattern = ObjectPattern;\n\tvar Property = (function () {\n\t function Property(kind, key, computed, value, method, shorthand) {\n\t this.type = syntax_1.Syntax.Property;\n\t this.key = key;\n\t this.computed = computed;\n\t this.value = value;\n\t this.kind = kind;\n\t this.method = method;\n\t this.shorthand = shorthand;\n\t }\n\t return Property;\n\t}());\n\texports.Property = Property;\n\tvar RegexLiteral = (function () {\n\t function RegexLiteral(value, raw, pattern, flags) {\n\t this.type = syntax_1.Syntax.Literal;\n\t this.value = value;\n\t this.raw = raw;\n\t this.regex = { pattern: pattern, flags: flags };\n\t }\n\t return RegexLiteral;\n\t}());\n\texports.RegexLiteral = RegexLiteral;\n\tvar RestElement = (function () {\n\t function RestElement(argument) {\n\t this.type = syntax_1.Syntax.RestElement;\n\t this.argument = argument;\n\t }\n\t return RestElement;\n\t}());\n\texports.RestElement = RestElement;\n\tvar ReturnStatement = (function () {\n\t function ReturnStatement(argument) {\n\t this.type = syntax_1.Syntax.ReturnStatement;\n\t this.argument = argument;\n\t }\n\t return ReturnStatement;\n\t}());\n\texports.ReturnStatement = ReturnStatement;\n\tvar Script = (function () {\n\t function Script(body) {\n\t this.type = syntax_1.Syntax.Program;\n\t this.body = body;\n\t this.sourceType = 'script';\n\t }\n\t return Script;\n\t}());\n\texports.Script = Script;\n\tvar SequenceExpression = (function () {\n\t function SequenceExpression(expressions) {\n\t this.type = syntax_1.Syntax.SequenceExpression;\n\t this.expressions = expressions;\n\t }\n\t return SequenceExpression;\n\t}());\n\texports.SequenceExpression = SequenceExpression;\n\tvar SpreadElement = (function () {\n\t function SpreadElement(argument) {\n\t this.type = syntax_1.Syntax.SpreadElement;\n\t this.argument = argument;\n\t }\n\t return SpreadElement;\n\t}());\n\texports.SpreadElement = SpreadElement;\n\tvar StaticMemberExpression = (function () {\n\t function StaticMemberExpression(object, property) {\n\t this.type = syntax_1.Syntax.MemberExpression;\n\t this.computed = false;\n\t this.object = object;\n\t this.property = property;\n\t }\n\t return StaticMemberExpression;\n\t}());\n\texports.StaticMemberExpression = StaticMemberExpression;\n\tvar Super = (function () {\n\t function Super() {\n\t this.type = syntax_1.Syntax.Super;\n\t }\n\t return Super;\n\t}());\n\texports.Super = Super;\n\tvar SwitchCase = (function () {\n\t function SwitchCase(test, consequent) {\n\t this.type = syntax_1.Syntax.SwitchCase;\n\t this.test = test;\n\t this.consequent = consequent;\n\t }\n\t return SwitchCase;\n\t}());\n\texports.SwitchCase = SwitchCase;\n\tvar SwitchStatement = (function () {\n\t function SwitchStatement(discriminant, cases) {\n\t this.type = syntax_1.Syntax.SwitchStatement;\n\t this.discriminant = discriminant;\n\t this.cases = cases;\n\t }\n\t return SwitchStatement;\n\t}());\n\texports.SwitchStatement = SwitchStatement;\n\tvar TaggedTemplateExpression = (function () {\n\t function TaggedTemplateExpression(tag, quasi) {\n\t this.type = syntax_1.Syntax.TaggedTemplateExpression;\n\t this.tag = tag;\n\t this.quasi = quasi;\n\t }\n\t return TaggedTemplateExpression;\n\t}());\n\texports.TaggedTemplateExpression = TaggedTemplateExpression;\n\tvar TemplateElement = (function () {\n\t function TemplateElement(value, tail) {\n\t this.type = syntax_1.Syntax.TemplateElement;\n\t this.value = value;\n\t this.tail = tail;\n\t }\n\t return TemplateElement;\n\t}());\n\texports.TemplateElement = TemplateElement;\n\tvar TemplateLiteral = (function () {\n\t function TemplateLiteral(quasis, expressions) {\n\t this.type = syntax_1.Syntax.TemplateLiteral;\n\t this.quasis = quasis;\n\t this.expressions = expressions;\n\t }\n\t return TemplateLiteral;\n\t}());\n\texports.TemplateLiteral = TemplateLiteral;\n\tvar ThisExpression = (function () {\n\t function ThisExpression() {\n\t this.type = syntax_1.Syntax.ThisExpression;\n\t }\n\t return ThisExpression;\n\t}());\n\texports.ThisExpression = ThisExpression;\n\tvar ThrowStatement = (function () {\n\t function ThrowStatement(argument) {\n\t this.type = syntax_1.Syntax.ThrowStatement;\n\t this.argument = argument;\n\t }\n\t return ThrowStatement;\n\t}());\n\texports.ThrowStatement = ThrowStatement;\n\tvar TryStatement = (function () {\n\t function TryStatement(block, handler, finalizer) {\n\t this.type = syntax_1.Syntax.TryStatement;\n\t this.block = block;\n\t this.handler = handler;\n\t this.finalizer = finalizer;\n\t }\n\t return TryStatement;\n\t}());\n\texports.TryStatement = TryStatement;\n\tvar UnaryExpression = (function () {\n\t function UnaryExpression(operator, argument) {\n\t this.type = syntax_1.Syntax.UnaryExpression;\n\t this.operator = operator;\n\t this.argument = argument;\n\t this.prefix = true;\n\t }\n\t return UnaryExpression;\n\t}());\n\texports.UnaryExpression = UnaryExpression;\n\tvar UpdateExpression = (function () {\n\t function UpdateExpression(operator, argument, prefix) {\n\t this.type = syntax_1.Syntax.UpdateExpression;\n\t this.operator = operator;\n\t this.argument = argument;\n\t this.prefix = prefix;\n\t }\n\t return UpdateExpression;\n\t}());\n\texports.UpdateExpression = UpdateExpression;\n\tvar VariableDeclaration = (function () {\n\t function VariableDeclaration(declarations, kind) {\n\t this.type = syntax_1.Syntax.VariableDeclaration;\n\t this.declarations = declarations;\n\t this.kind = kind;\n\t }\n\t return VariableDeclaration;\n\t}());\n\texports.VariableDeclaration = VariableDeclaration;\n\tvar VariableDeclarator = (function () {\n\t function VariableDeclarator(id, init) {\n\t this.type = syntax_1.Syntax.VariableDeclarator;\n\t this.id = id;\n\t this.init = init;\n\t }\n\t return VariableDeclarator;\n\t}());\n\texports.VariableDeclarator = VariableDeclarator;\n\tvar WhileStatement = (function () {\n\t function WhileStatement(test, body) {\n\t this.type = syntax_1.Syntax.WhileStatement;\n\t this.test = test;\n\t this.body = body;\n\t }\n\t return WhileStatement;\n\t}());\n\texports.WhileStatement = WhileStatement;\n\tvar WithStatement = (function () {\n\t function WithStatement(object, body) {\n\t this.type = syntax_1.Syntax.WithStatement;\n\t this.object = object;\n\t this.body = body;\n\t }\n\t return WithStatement;\n\t}());\n\texports.WithStatement = WithStatement;\n\tvar YieldExpression = (function () {\n\t function YieldExpression(argument, delegate) {\n\t this.type = syntax_1.Syntax.YieldExpression;\n\t this.argument = argument;\n\t this.delegate = delegate;\n\t }\n\t return YieldExpression;\n\t}());\n\texports.YieldExpression = YieldExpression;\n\n\n/***/ },\n/* 8 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar assert_1 = __webpack_require__(9);\n\tvar error_handler_1 = __webpack_require__(10);\n\tvar messages_1 = __webpack_require__(11);\n\tvar Node = __webpack_require__(7);\n\tvar scanner_1 = __webpack_require__(12);\n\tvar syntax_1 = __webpack_require__(2);\n\tvar token_1 = __webpack_require__(13);\n\tvar ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder';\n\tvar Parser = (function () {\n\t function Parser(code, options, delegate) {\n\t if (options === void 0) { options = {}; }\n\t this.config = {\n\t range: (typeof options.range === 'boolean') && options.range,\n\t loc: (typeof options.loc === 'boolean') && options.loc,\n\t source: null,\n\t tokens: (typeof options.tokens === 'boolean') && options.tokens,\n\t comment: (typeof options.comment === 'boolean') && options.comment,\n\t tolerant: (typeof options.tolerant === 'boolean') && options.tolerant\n\t };\n\t if (this.config.loc && options.source && options.source !== null) {\n\t this.config.source = String(options.source);\n\t }\n\t this.delegate = delegate;\n\t this.errorHandler = new error_handler_1.ErrorHandler();\n\t this.errorHandler.tolerant = this.config.tolerant;\n\t this.scanner = new scanner_1.Scanner(code, this.errorHandler);\n\t this.scanner.trackComment = this.config.comment;\n\t this.operatorPrecedence = {\n\t ')': 0,\n\t ';': 0,\n\t ',': 0,\n\t '=': 0,\n\t ']': 0,\n\t '||': 1,\n\t '&&': 2,\n\t '|': 3,\n\t '^': 4,\n\t '&': 5,\n\t '==': 6,\n\t '!=': 6,\n\t '===': 6,\n\t '!==': 6,\n\t '<': 7,\n\t '>': 7,\n\t '<=': 7,\n\t '>=': 7,\n\t '<<': 8,\n\t '>>': 8,\n\t '>>>': 8,\n\t '+': 9,\n\t '-': 9,\n\t '*': 11,\n\t '/': 11,\n\t '%': 11\n\t };\n\t this.lookahead = {\n\t type: 2 /* EOF */,\n\t value: '',\n\t lineNumber: this.scanner.lineNumber,\n\t lineStart: 0,\n\t start: 0,\n\t end: 0\n\t };\n\t this.hasLineTerminator = false;\n\t this.context = {\n\t isModule: false,\n\t await: false,\n\t allowIn: true,\n\t allowStrictDirective: true,\n\t allowYield: true,\n\t firstCoverInitializedNameError: null,\n\t isAssignmentTarget: false,\n\t isBindingElement: false,\n\t inFunctionBody: false,\n\t inIteration: false,\n\t inSwitch: false,\n\t labelSet: {},\n\t strict: false\n\t };\n\t this.tokens = [];\n\t this.startMarker = {\n\t index: 0,\n\t line: this.scanner.lineNumber,\n\t column: 0\n\t };\n\t this.lastMarker = {\n\t index: 0,\n\t line: this.scanner.lineNumber,\n\t column: 0\n\t };\n\t this.nextToken();\n\t this.lastMarker = {\n\t index: this.scanner.index,\n\t line: this.scanner.lineNumber,\n\t column: this.scanner.index - this.scanner.lineStart\n\t };\n\t }\n\t Parser.prototype.throwError = function (messageFormat) {\n\t var values = [];\n\t for (var _i = 1; _i < arguments.length; _i++) {\n\t values[_i - 1] = arguments[_i];\n\t }\n\t var args = Array.prototype.slice.call(arguments, 1);\n\t var msg = messageFormat.replace(/%(\\d)/g, function (whole, idx) {\n\t assert_1.assert(idx < args.length, 'Message reference must be in range');\n\t return args[idx];\n\t });\n\t var index = this.lastMarker.index;\n\t var line = this.lastMarker.line;\n\t var column = this.lastMarker.column + 1;\n\t throw this.errorHandler.createError(index, line, column, msg);\n\t };\n\t Parser.prototype.tolerateError = function (messageFormat) {\n\t var values = [];\n\t for (var _i = 1; _i < arguments.length; _i++) {\n\t values[_i - 1] = arguments[_i];\n\t }\n\t var args = Array.prototype.slice.call(arguments, 1);\n\t var msg = messageFormat.replace(/%(\\d)/g, function (whole, idx) {\n\t assert_1.assert(idx < args.length, 'Message reference must be in range');\n\t return args[idx];\n\t });\n\t var index = this.lastMarker.index;\n\t var line = this.scanner.lineNumber;\n\t var column = this.lastMarker.column + 1;\n\t this.errorHandler.tolerateError(index, line, column, msg);\n\t };\n\t // Throw an exception because of the token.\n\t Parser.prototype.unexpectedTokenError = function (token, message) {\n\t var msg = message || messages_1.Messages.UnexpectedToken;\n\t var value;\n\t if (token) {\n\t if (!message) {\n\t msg = (token.type === 2 /* EOF */) ? messages_1.Messages.UnexpectedEOS :\n\t (token.type === 3 /* Identifier */) ? messages_1.Messages.UnexpectedIdentifier :\n\t (token.type === 6 /* NumericLiteral */) ? messages_1.Messages.UnexpectedNumber :\n\t (token.type === 8 /* StringLiteral */) ? messages_1.Messages.UnexpectedString :\n\t (token.type === 10 /* Template */) ? messages_1.Messages.UnexpectedTemplate :\n\t messages_1.Messages.UnexpectedToken;\n\t if (token.type === 4 /* Keyword */) {\n\t if (this.scanner.isFutureReservedWord(token.value)) {\n\t msg = messages_1.Messages.UnexpectedReserved;\n\t }\n\t else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) {\n\t msg = messages_1.Messages.StrictReservedWord;\n\t }\n\t }\n\t }\n\t value = token.value;\n\t }\n\t else {\n\t value = 'ILLEGAL';\n\t }\n\t msg = msg.replace('%0', value);\n\t if (token && typeof token.lineNumber === 'number') {\n\t var index = token.start;\n\t var line = token.lineNumber;\n\t var lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column;\n\t var column = token.start - lastMarkerLineStart + 1;\n\t return this.errorHandler.createError(index, line, column, msg);\n\t }\n\t else {\n\t var index = this.lastMarker.index;\n\t var line = this.lastMarker.line;\n\t var column = this.lastMarker.column + 1;\n\t return this.errorHandler.createError(index, line, column, msg);\n\t }\n\t };\n\t Parser.prototype.throwUnexpectedToken = function (token, message) {\n\t throw this.unexpectedTokenError(token, message);\n\t };\n\t Parser.prototype.tolerateUnexpectedToken = function (token, message) {\n\t this.errorHandler.tolerate(this.unexpectedTokenError(token, message));\n\t };\n\t Parser.prototype.collectComments = function () {\n\t if (!this.config.comment) {\n\t this.scanner.scanComments();\n\t }\n\t else {\n\t var comments = this.scanner.scanComments();\n\t if (comments.length > 0 && this.delegate) {\n\t for (var i = 0; i < comments.length; ++i) {\n\t var e = comments[i];\n\t var node = void 0;\n\t node = {\n\t type: e.multiLine ? 'BlockComment' : 'LineComment',\n\t value: this.scanner.source.slice(e.slice[0], e.slice[1])\n\t };\n\t if (this.config.range) {\n\t node.range = e.range;\n\t }\n\t if (this.config.loc) {\n\t node.loc = e.loc;\n\t }\n\t var metadata = {\n\t start: {\n\t line: e.loc.start.line,\n\t column: e.loc.start.column,\n\t offset: e.range[0]\n\t },\n\t end: {\n\t line: e.loc.end.line,\n\t column: e.loc.end.column,\n\t offset: e.range[1]\n\t }\n\t };\n\t this.delegate(node, metadata);\n\t }\n\t }\n\t }\n\t };\n\t // From internal representation to an external structure\n\t Parser.prototype.getTokenRaw = function (token) {\n\t return this.scanner.source.slice(token.start, token.end);\n\t };\n\t Parser.prototype.convertToken = function (token) {\n\t var t = {\n\t type: token_1.TokenName[token.type],\n\t value: this.getTokenRaw(token)\n\t };\n\t if (this.config.range) {\n\t t.range = [token.start, token.end];\n\t }\n\t if (this.config.loc) {\n\t t.loc = {\n\t start: {\n\t line: this.startMarker.line,\n\t column: this.startMarker.column\n\t },\n\t end: {\n\t line: this.scanner.lineNumber,\n\t column: this.scanner.index - this.scanner.lineStart\n\t }\n\t };\n\t }\n\t if (token.type === 9 /* RegularExpression */) {\n\t var pattern = token.pattern;\n\t var flags = token.flags;\n\t t.regex = { pattern: pattern, flags: flags };\n\t }\n\t return t;\n\t };\n\t Parser.prototype.nextToken = function () {\n\t var token = this.lookahead;\n\t this.lastMarker.index = this.scanner.index;\n\t this.lastMarker.line = this.scanner.lineNumber;\n\t this.lastMarker.column = this.scanner.index - this.scanner.lineStart;\n\t this.collectComments();\n\t if (this.scanner.index !== this.startMarker.index) {\n\t this.startMarker.index = this.scanner.index;\n\t this.startMarker.line = this.scanner.lineNumber;\n\t this.startMarker.column = this.scanner.index - this.scanner.lineStart;\n\t }\n\t var next = this.scanner.lex();\n\t this.hasLineTerminator = (token.lineNumber !== next.lineNumber);\n\t if (next && this.context.strict && next.type === 3 /* Identifier */) {\n\t if (this.scanner.isStrictModeReservedWord(next.value)) {\n\t next.type = 4 /* Keyword */;\n\t }\n\t }\n\t this.lookahead = next;\n\t if (this.config.tokens && next.type !== 2 /* EOF */) {\n\t this.tokens.push(this.convertToken(next));\n\t }\n\t return token;\n\t };\n\t Parser.prototype.nextRegexToken = function () {\n\t this.collectComments();\n\t var token = this.scanner.scanRegExp();\n\t if (this.config.tokens) {\n\t // Pop the previous token, '/' or '/='\n\t // This is added from the lookahead token.\n\t this.tokens.pop();\n\t this.tokens.push(this.convertToken(token));\n\t }\n\t // Prime the next lookahead.\n\t this.lookahead = token;\n\t this.nextToken();\n\t return token;\n\t };\n\t Parser.prototype.createNode = function () {\n\t return {\n\t index: this.startMarker.index,\n\t line: this.startMarker.line,\n\t column: this.startMarker.column\n\t };\n\t };\n\t Parser.prototype.startNode = function (token, lastLineStart) {\n\t if (lastLineStart === void 0) { lastLineStart = 0; }\n\t var column = token.start - token.lineStart;\n\t var line = token.lineNumber;\n\t if (column < 0) {\n\t column += lastLineStart;\n\t line--;\n\t }\n\t return {\n\t index: token.start,\n\t line: line,\n\t column: column\n\t };\n\t };\n\t Parser.prototype.finalize = function (marker, node) {\n\t if (this.config.range) {\n\t node.range = [marker.index, this.lastMarker.index];\n\t }\n\t if (this.config.loc) {\n\t node.loc = {\n\t start: {\n\t line: marker.line,\n\t column: marker.column,\n\t },\n\t end: {\n\t line: this.lastMarker.line,\n\t column: this.lastMarker.column\n\t }\n\t };\n\t if (this.config.source) {\n\t node.loc.source = this.config.source;\n\t }\n\t }\n\t if (this.delegate) {\n\t var metadata = {\n\t start: {\n\t line: marker.line,\n\t column: marker.column,\n\t offset: marker.index\n\t },\n\t end: {\n\t line: this.lastMarker.line,\n\t column: this.lastMarker.column,\n\t offset: this.lastMarker.index\n\t }\n\t };\n\t this.delegate(node, metadata);\n\t }\n\t return node;\n\t };\n\t // Expect the next token to match the specified punctuator.\n\t // If not, an exception will be thrown.\n\t Parser.prototype.expect = function (value) {\n\t var token = this.nextToken();\n\t if (token.type !== 7 /* Punctuator */ || token.value !== value) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t };\n\t // Quietly expect a comma when in tolerant mode, otherwise delegates to expect().\n\t Parser.prototype.expectCommaSeparator = function () {\n\t if (this.config.tolerant) {\n\t var token = this.lookahead;\n\t if (token.type === 7 /* Punctuator */ && token.value === ',') {\n\t this.nextToken();\n\t }\n\t else if (token.type === 7 /* Punctuator */ && token.value === ';') {\n\t this.nextToken();\n\t this.tolerateUnexpectedToken(token);\n\t }\n\t else {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken);\n\t }\n\t }\n\t else {\n\t this.expect(',');\n\t }\n\t };\n\t // Expect the next token to match the specified keyword.\n\t // If not, an exception will be thrown.\n\t Parser.prototype.expectKeyword = function (keyword) {\n\t var token = this.nextToken();\n\t if (token.type !== 4 /* Keyword */ || token.value !== keyword) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t };\n\t // Return true if the next token matches the specified punctuator.\n\t Parser.prototype.match = function (value) {\n\t return this.lookahead.type === 7 /* Punctuator */ && this.lookahead.value === value;\n\t };\n\t // Return true if the next token matches the specified keyword\n\t Parser.prototype.matchKeyword = function (keyword) {\n\t return this.lookahead.type === 4 /* Keyword */ && this.lookahead.value === keyword;\n\t };\n\t // Return true if the next token matches the specified contextual keyword\n\t // (where an identifier is sometimes a keyword depending on the context)\n\t Parser.prototype.matchContextualKeyword = function (keyword) {\n\t return this.lookahead.type === 3 /* Identifier */ && this.lookahead.value === keyword;\n\t };\n\t // Return true if the next token is an assignment operator\n\t Parser.prototype.matchAssign = function () {\n\t if (this.lookahead.type !== 7 /* Punctuator */) {\n\t return false;\n\t }\n\t var op = this.lookahead.value;\n\t return op === '=' ||\n\t op === '*=' ||\n\t op === '**=' ||\n\t op === '/=' ||\n\t op === '%=' ||\n\t op === '+=' ||\n\t op === '-=' ||\n\t op === '<<=' ||\n\t op === '>>=' ||\n\t op === '>>>=' ||\n\t op === '&=' ||\n\t op === '^=' ||\n\t op === '|=';\n\t };\n\t // Cover grammar support.\n\t //\n\t // When an assignment expression position starts with an left parenthesis, the determination of the type\n\t // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead)\n\t // or the first comma. This situation also defers the determination of all the expressions nested in the pair.\n\t //\n\t // There are three productions that can be parsed in a parentheses pair that needs to be determined\n\t // after the outermost pair is closed. They are:\n\t //\n\t // 1. AssignmentExpression\n\t // 2. BindingElements\n\t // 3. AssignmentTargets\n\t //\n\t // In order to avoid exponential backtracking, we use two flags to denote if the production can be\n\t // binding element or assignment target.\n\t //\n\t // The three productions have the relationship:\n\t //\n\t // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression\n\t //\n\t // with a single exception that CoverInitializedName when used directly in an Expression, generates\n\t // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the\n\t // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair.\n\t //\n\t // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not\n\t // effect the current flags. This means the production the parser parses is only used as an expression. Therefore\n\t // the CoverInitializedName check is conducted.\n\t //\n\t // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates\n\t // the flags outside of the parser. This means the production the parser parses is used as a part of a potential\n\t // pattern. The CoverInitializedName check is deferred.\n\t Parser.prototype.isolateCoverGrammar = function (parseFunction) {\n\t var previousIsBindingElement = this.context.isBindingElement;\n\t var previousIsAssignmentTarget = this.context.isAssignmentTarget;\n\t var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;\n\t this.context.isBindingElement = true;\n\t this.context.isAssignmentTarget = true;\n\t this.context.firstCoverInitializedNameError = null;\n\t var result = parseFunction.call(this);\n\t if (this.context.firstCoverInitializedNameError !== null) {\n\t this.throwUnexpectedToken(this.context.firstCoverInitializedNameError);\n\t }\n\t this.context.isBindingElement = previousIsBindingElement;\n\t this.context.isAssignmentTarget = previousIsAssignmentTarget;\n\t this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError;\n\t return result;\n\t };\n\t Parser.prototype.inheritCoverGrammar = function (parseFunction) {\n\t var previousIsBindingElement = this.context.isBindingElement;\n\t var previousIsAssignmentTarget = this.context.isAssignmentTarget;\n\t var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;\n\t this.context.isBindingElement = true;\n\t this.context.isAssignmentTarget = true;\n\t this.context.firstCoverInitializedNameError = null;\n\t var result = parseFunction.call(this);\n\t this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement;\n\t this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget;\n\t this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError;\n\t return result;\n\t };\n\t Parser.prototype.consumeSemicolon = function () {\n\t if (this.match(';')) {\n\t this.nextToken();\n\t }\n\t else if (!this.hasLineTerminator) {\n\t if (this.lookahead.type !== 2 /* EOF */ && !this.match('}')) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t this.lastMarker.index = this.startMarker.index;\n\t this.lastMarker.line = this.startMarker.line;\n\t this.lastMarker.column = this.startMarker.column;\n\t }\n\t };\n\t // https://tc39.github.io/ecma262/#sec-primary-expression\n\t Parser.prototype.parsePrimaryExpression = function () {\n\t var node = this.createNode();\n\t var expr;\n\t var token, raw;\n\t switch (this.lookahead.type) {\n\t case 3 /* Identifier */:\n\t if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') {\n\t this.tolerateUnexpectedToken(this.lookahead);\n\t }\n\t expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value));\n\t break;\n\t case 6 /* NumericLiteral */:\n\t case 8 /* StringLiteral */:\n\t if (this.context.strict && this.lookahead.octal) {\n\t this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral);\n\t }\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t token = this.nextToken();\n\t raw = this.getTokenRaw(token);\n\t expr = this.finalize(node, new Node.Literal(token.value, raw));\n\t break;\n\t case 1 /* BooleanLiteral */:\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t token = this.nextToken();\n\t raw = this.getTokenRaw(token);\n\t expr = this.finalize(node, new Node.Literal(token.value === 'true', raw));\n\t break;\n\t case 5 /* NullLiteral */:\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t token = this.nextToken();\n\t raw = this.getTokenRaw(token);\n\t expr = this.finalize(node, new Node.Literal(null, raw));\n\t break;\n\t case 10 /* Template */:\n\t expr = this.parseTemplateLiteral();\n\t break;\n\t case 7 /* Punctuator */:\n\t switch (this.lookahead.value) {\n\t case '(':\n\t this.context.isBindingElement = false;\n\t expr = this.inheritCoverGrammar(this.parseGroupExpression);\n\t break;\n\t case '[':\n\t expr = this.inheritCoverGrammar(this.parseArrayInitializer);\n\t break;\n\t case '{':\n\t expr = this.inheritCoverGrammar(this.parseObjectInitializer);\n\t break;\n\t case '/':\n\t case '/=':\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t this.scanner.index = this.startMarker.index;\n\t token = this.nextRegexToken();\n\t raw = this.getTokenRaw(token);\n\t expr = this.finalize(node, new Node.RegexLiteral(token.regex, raw, token.pattern, token.flags));\n\t break;\n\t default:\n\t expr = this.throwUnexpectedToken(this.nextToken());\n\t }\n\t break;\n\t case 4 /* Keyword */:\n\t if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) {\n\t expr = this.parseIdentifierName();\n\t }\n\t else if (!this.context.strict && this.matchKeyword('let')) {\n\t expr = this.finalize(node, new Node.Identifier(this.nextToken().value));\n\t }\n\t else {\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t if (this.matchKeyword('function')) {\n\t expr = this.parseFunctionExpression();\n\t }\n\t else if (this.matchKeyword('this')) {\n\t this.nextToken();\n\t expr = this.finalize(node, new Node.ThisExpression());\n\t }\n\t else if (this.matchKeyword('class')) {\n\t expr = this.parseClassExpression();\n\t }\n\t else {\n\t expr = this.throwUnexpectedToken(this.nextToken());\n\t }\n\t }\n\t break;\n\t default:\n\t expr = this.throwUnexpectedToken(this.nextToken());\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-array-initializer\n\t Parser.prototype.parseSpreadElement = function () {\n\t var node = this.createNode();\n\t this.expect('...');\n\t var arg = this.inheritCoverGrammar(this.parseAssignmentExpression);\n\t return this.finalize(node, new Node.SpreadElement(arg));\n\t };\n\t Parser.prototype.parseArrayInitializer = function () {\n\t var node = this.createNode();\n\t var elements = [];\n\t this.expect('[');\n\t while (!this.match(']')) {\n\t if (this.match(',')) {\n\t this.nextToken();\n\t elements.push(null);\n\t }\n\t else if (this.match('...')) {\n\t var element = this.parseSpreadElement();\n\t if (!this.match(']')) {\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t this.expect(',');\n\t }\n\t elements.push(element);\n\t }\n\t else {\n\t elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression));\n\t if (!this.match(']')) {\n\t this.expect(',');\n\t }\n\t }\n\t }\n\t this.expect(']');\n\t return this.finalize(node, new Node.ArrayExpression(elements));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-object-initializer\n\t Parser.prototype.parsePropertyMethod = function (params) {\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t var previousStrict = this.context.strict;\n\t var previousAllowStrictDirective = this.context.allowStrictDirective;\n\t this.context.allowStrictDirective = params.simple;\n\t var body = this.isolateCoverGrammar(this.parseFunctionSourceElements);\n\t if (this.context.strict && params.firstRestricted) {\n\t this.tolerateUnexpectedToken(params.firstRestricted, params.message);\n\t }\n\t if (this.context.strict && params.stricted) {\n\t this.tolerateUnexpectedToken(params.stricted, params.message);\n\t }\n\t this.context.strict = previousStrict;\n\t this.context.allowStrictDirective = previousAllowStrictDirective;\n\t return body;\n\t };\n\t Parser.prototype.parsePropertyMethodFunction = function () {\n\t var isGenerator = false;\n\t var node = this.createNode();\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.allowYield = true;\n\t var params = this.parseFormalParameters();\n\t var method = this.parsePropertyMethod(params);\n\t this.context.allowYield = previousAllowYield;\n\t return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));\n\t };\n\t Parser.prototype.parsePropertyMethodAsyncFunction = function () {\n\t var node = this.createNode();\n\t var previousAllowYield = this.context.allowYield;\n\t var previousAwait = this.context.await;\n\t this.context.allowYield = false;\n\t this.context.await = true;\n\t var params = this.parseFormalParameters();\n\t var method = this.parsePropertyMethod(params);\n\t this.context.allowYield = previousAllowYield;\n\t this.context.await = previousAwait;\n\t return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method));\n\t };\n\t Parser.prototype.parseObjectPropertyKey = function () {\n\t var node = this.createNode();\n\t var token = this.nextToken();\n\t var key;\n\t switch (token.type) {\n\t case 8 /* StringLiteral */:\n\t case 6 /* NumericLiteral */:\n\t if (this.context.strict && token.octal) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral);\n\t }\n\t var raw = this.getTokenRaw(token);\n\t key = this.finalize(node, new Node.Literal(token.value, raw));\n\t break;\n\t case 3 /* Identifier */:\n\t case 1 /* BooleanLiteral */:\n\t case 5 /* NullLiteral */:\n\t case 4 /* Keyword */:\n\t key = this.finalize(node, new Node.Identifier(token.value));\n\t break;\n\t case 7 /* Punctuator */:\n\t if (token.value === '[') {\n\t key = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t this.expect(']');\n\t }\n\t else {\n\t key = this.throwUnexpectedToken(token);\n\t }\n\t break;\n\t default:\n\t key = this.throwUnexpectedToken(token);\n\t }\n\t return key;\n\t };\n\t Parser.prototype.isPropertyKey = function (key, value) {\n\t return (key.type === syntax_1.Syntax.Identifier && key.name === value) ||\n\t (key.type === syntax_1.Syntax.Literal && key.value === value);\n\t };\n\t Parser.prototype.parseObjectProperty = function (hasProto) {\n\t var node = this.createNode();\n\t var token = this.lookahead;\n\t var kind;\n\t var key = null;\n\t var value = null;\n\t var computed = false;\n\t var method = false;\n\t var shorthand = false;\n\t var isAsync = false;\n\t if (token.type === 3 /* Identifier */) {\n\t var id = token.value;\n\t this.nextToken();\n\t computed = this.match('[');\n\t isAsync = !this.hasLineTerminator && (id === 'async') &&\n\t !this.match(':') && !this.match('(') && !this.match('*') && !this.match(',');\n\t key = isAsync ? this.parseObjectPropertyKey() : this.finalize(node, new Node.Identifier(id));\n\t }\n\t else if (this.match('*')) {\n\t this.nextToken();\n\t }\n\t else {\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t }\n\t var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);\n\t if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'get' && lookaheadPropertyKey) {\n\t kind = 'get';\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t this.context.allowYield = false;\n\t value = this.parseGetterMethod();\n\t }\n\t else if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'set' && lookaheadPropertyKey) {\n\t kind = 'set';\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t value = this.parseSetterMethod();\n\t }\n\t else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) {\n\t kind = 'init';\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t value = this.parseGeneratorMethod();\n\t method = true;\n\t }\n\t else {\n\t if (!key) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t kind = 'init';\n\t if (this.match(':') && !isAsync) {\n\t if (!computed && this.isPropertyKey(key, '__proto__')) {\n\t if (hasProto.value) {\n\t this.tolerateError(messages_1.Messages.DuplicateProtoProperty);\n\t }\n\t hasProto.value = true;\n\t }\n\t this.nextToken();\n\t value = this.inheritCoverGrammar(this.parseAssignmentExpression);\n\t }\n\t else if (this.match('(')) {\n\t value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();\n\t method = true;\n\t }\n\t else if (token.type === 3 /* Identifier */) {\n\t var id = this.finalize(node, new Node.Identifier(token.value));\n\t if (this.match('=')) {\n\t this.context.firstCoverInitializedNameError = this.lookahead;\n\t this.nextToken();\n\t shorthand = true;\n\t var init = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t value = this.finalize(node, new Node.AssignmentPattern(id, init));\n\t }\n\t else {\n\t shorthand = true;\n\t value = id;\n\t }\n\t }\n\t else {\n\t this.throwUnexpectedToken(this.nextToken());\n\t }\n\t }\n\t return this.finalize(node, new Node.Property(kind, key, computed, value, method, shorthand));\n\t };\n\t Parser.prototype.parseObjectInitializer = function () {\n\t var node = this.createNode();\n\t this.expect('{');\n\t var properties = [];\n\t var hasProto = { value: false };\n\t while (!this.match('}')) {\n\t properties.push(this.parseObjectProperty(hasProto));\n\t if (!this.match('}')) {\n\t this.expectCommaSeparator();\n\t }\n\t }\n\t this.expect('}');\n\t return this.finalize(node, new Node.ObjectExpression(properties));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-template-literals\n\t Parser.prototype.parseTemplateHead = function () {\n\t assert_1.assert(this.lookahead.head, 'Template literal must start with a template head');\n\t var node = this.createNode();\n\t var token = this.nextToken();\n\t var raw = token.value;\n\t var cooked = token.cooked;\n\t return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail));\n\t };\n\t Parser.prototype.parseTemplateElement = function () {\n\t if (this.lookahead.type !== 10 /* Template */) {\n\t this.throwUnexpectedToken();\n\t }\n\t var node = this.createNode();\n\t var token = this.nextToken();\n\t var raw = token.value;\n\t var cooked = token.cooked;\n\t return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail));\n\t };\n\t Parser.prototype.parseTemplateLiteral = function () {\n\t var node = this.createNode();\n\t var expressions = [];\n\t var quasis = [];\n\t var quasi = this.parseTemplateHead();\n\t quasis.push(quasi);\n\t while (!quasi.tail) {\n\t expressions.push(this.parseExpression());\n\t quasi = this.parseTemplateElement();\n\t quasis.push(quasi);\n\t }\n\t return this.finalize(node, new Node.TemplateLiteral(quasis, expressions));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-grouping-operator\n\t Parser.prototype.reinterpretExpressionAsPattern = function (expr) {\n\t switch (expr.type) {\n\t case syntax_1.Syntax.Identifier:\n\t case syntax_1.Syntax.MemberExpression:\n\t case syntax_1.Syntax.RestElement:\n\t case syntax_1.Syntax.AssignmentPattern:\n\t break;\n\t case syntax_1.Syntax.SpreadElement:\n\t expr.type = syntax_1.Syntax.RestElement;\n\t this.reinterpretExpressionAsPattern(expr.argument);\n\t break;\n\t case syntax_1.Syntax.ArrayExpression:\n\t expr.type = syntax_1.Syntax.ArrayPattern;\n\t for (var i = 0; i < expr.elements.length; i++) {\n\t if (expr.elements[i] !== null) {\n\t this.reinterpretExpressionAsPattern(expr.elements[i]);\n\t }\n\t }\n\t break;\n\t case syntax_1.Syntax.ObjectExpression:\n\t expr.type = syntax_1.Syntax.ObjectPattern;\n\t for (var i = 0; i < expr.properties.length; i++) {\n\t this.reinterpretExpressionAsPattern(expr.properties[i].value);\n\t }\n\t break;\n\t case syntax_1.Syntax.AssignmentExpression:\n\t expr.type = syntax_1.Syntax.AssignmentPattern;\n\t delete expr.operator;\n\t this.reinterpretExpressionAsPattern(expr.left);\n\t break;\n\t default:\n\t // Allow other node type for tolerant parsing.\n\t break;\n\t }\n\t };\n\t Parser.prototype.parseGroupExpression = function () {\n\t var expr;\n\t this.expect('(');\n\t if (this.match(')')) {\n\t this.nextToken();\n\t if (!this.match('=>')) {\n\t this.expect('=>');\n\t }\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: [],\n\t async: false\n\t };\n\t }\n\t else {\n\t var startToken = this.lookahead;\n\t var params = [];\n\t if (this.match('...')) {\n\t expr = this.parseRestElement(params);\n\t this.expect(')');\n\t if (!this.match('=>')) {\n\t this.expect('=>');\n\t }\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: [expr],\n\t async: false\n\t };\n\t }\n\t else {\n\t var arrow = false;\n\t this.context.isBindingElement = true;\n\t expr = this.inheritCoverGrammar(this.parseAssignmentExpression);\n\t if (this.match(',')) {\n\t var expressions = [];\n\t this.context.isAssignmentTarget = false;\n\t expressions.push(expr);\n\t while (this.lookahead.type !== 2 /* EOF */) {\n\t if (!this.match(',')) {\n\t break;\n\t }\n\t this.nextToken();\n\t if (this.match(')')) {\n\t this.nextToken();\n\t for (var i = 0; i < expressions.length; i++) {\n\t this.reinterpretExpressionAsPattern(expressions[i]);\n\t }\n\t arrow = true;\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: expressions,\n\t async: false\n\t };\n\t }\n\t else if (this.match('...')) {\n\t if (!this.context.isBindingElement) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t expressions.push(this.parseRestElement(params));\n\t this.expect(')');\n\t if (!this.match('=>')) {\n\t this.expect('=>');\n\t }\n\t this.context.isBindingElement = false;\n\t for (var i = 0; i < expressions.length; i++) {\n\t this.reinterpretExpressionAsPattern(expressions[i]);\n\t }\n\t arrow = true;\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: expressions,\n\t async: false\n\t };\n\t }\n\t else {\n\t expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression));\n\t }\n\t if (arrow) {\n\t break;\n\t }\n\t }\n\t if (!arrow) {\n\t expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));\n\t }\n\t }\n\t if (!arrow) {\n\t this.expect(')');\n\t if (this.match('=>')) {\n\t if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') {\n\t arrow = true;\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: [expr],\n\t async: false\n\t };\n\t }\n\t if (!arrow) {\n\t if (!this.context.isBindingElement) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t if (expr.type === syntax_1.Syntax.SequenceExpression) {\n\t for (var i = 0; i < expr.expressions.length; i++) {\n\t this.reinterpretExpressionAsPattern(expr.expressions[i]);\n\t }\n\t }\n\t else {\n\t this.reinterpretExpressionAsPattern(expr);\n\t }\n\t var parameters = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]);\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: parameters,\n\t async: false\n\t };\n\t }\n\t }\n\t this.context.isBindingElement = false;\n\t }\n\t }\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-left-hand-side-expressions\n\t Parser.prototype.parseArguments = function () {\n\t this.expect('(');\n\t var args = [];\n\t if (!this.match(')')) {\n\t while (true) {\n\t var expr = this.match('...') ? this.parseSpreadElement() :\n\t this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t args.push(expr);\n\t if (this.match(')')) {\n\t break;\n\t }\n\t this.expectCommaSeparator();\n\t if (this.match(')')) {\n\t break;\n\t }\n\t }\n\t }\n\t this.expect(')');\n\t return args;\n\t };\n\t Parser.prototype.isIdentifierName = function (token) {\n\t return token.type === 3 /* Identifier */ ||\n\t token.type === 4 /* Keyword */ ||\n\t token.type === 1 /* BooleanLiteral */ ||\n\t token.type === 5 /* NullLiteral */;\n\t };\n\t Parser.prototype.parseIdentifierName = function () {\n\t var node = this.createNode();\n\t var token = this.nextToken();\n\t if (!this.isIdentifierName(token)) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t return this.finalize(node, new Node.Identifier(token.value));\n\t };\n\t Parser.prototype.parseNewExpression = function () {\n\t var node = this.createNode();\n\t var id = this.parseIdentifierName();\n\t assert_1.assert(id.name === 'new', 'New expression must start with `new`');\n\t var expr;\n\t if (this.match('.')) {\n\t this.nextToken();\n\t if (this.lookahead.type === 3 /* Identifier */ && this.context.inFunctionBody && this.lookahead.value === 'target') {\n\t var property = this.parseIdentifierName();\n\t expr = new Node.MetaProperty(id, property);\n\t }\n\t else {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t }\n\t else {\n\t var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression);\n\t var args = this.match('(') ? this.parseArguments() : [];\n\t expr = new Node.NewExpression(callee, args);\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t }\n\t return this.finalize(node, expr);\n\t };\n\t Parser.prototype.parseAsyncArgument = function () {\n\t var arg = this.parseAssignmentExpression();\n\t this.context.firstCoverInitializedNameError = null;\n\t return arg;\n\t };\n\t Parser.prototype.parseAsyncArguments = function () {\n\t this.expect('(');\n\t var args = [];\n\t if (!this.match(')')) {\n\t while (true) {\n\t var expr = this.match('...') ? this.parseSpreadElement() :\n\t this.isolateCoverGrammar(this.parseAsyncArgument);\n\t args.push(expr);\n\t if (this.match(')')) {\n\t break;\n\t }\n\t this.expectCommaSeparator();\n\t if (this.match(')')) {\n\t break;\n\t }\n\t }\n\t }\n\t this.expect(')');\n\t return args;\n\t };\n\t Parser.prototype.parseLeftHandSideExpressionAllowCall = function () {\n\t var startToken = this.lookahead;\n\t var maybeAsync = this.matchContextualKeyword('async');\n\t var previousAllowIn = this.context.allowIn;\n\t this.context.allowIn = true;\n\t var expr;\n\t if (this.matchKeyword('super') && this.context.inFunctionBody) {\n\t expr = this.createNode();\n\t this.nextToken();\n\t expr = this.finalize(expr, new Node.Super());\n\t if (!this.match('(') && !this.match('.') && !this.match('[')) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t }\n\t else {\n\t expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);\n\t }\n\t while (true) {\n\t if (this.match('.')) {\n\t this.context.isBindingElement = false;\n\t this.context.isAssignmentTarget = true;\n\t this.expect('.');\n\t var property = this.parseIdentifierName();\n\t expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property));\n\t }\n\t else if (this.match('(')) {\n\t var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber);\n\t this.context.isBindingElement = false;\n\t this.context.isAssignmentTarget = false;\n\t var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments();\n\t expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args));\n\t if (asyncArrow && this.match('=>')) {\n\t for (var i = 0; i < args.length; ++i) {\n\t this.reinterpretExpressionAsPattern(args[i]);\n\t }\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: args,\n\t async: true\n\t };\n\t }\n\t }\n\t else if (this.match('[')) {\n\t this.context.isBindingElement = false;\n\t this.context.isAssignmentTarget = true;\n\t this.expect('[');\n\t var property = this.isolateCoverGrammar(this.parseExpression);\n\t this.expect(']');\n\t expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property));\n\t }\n\t else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) {\n\t var quasi = this.parseTemplateLiteral();\n\t expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi));\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t this.context.allowIn = previousAllowIn;\n\t return expr;\n\t };\n\t Parser.prototype.parseSuper = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('super');\n\t if (!this.match('[') && !this.match('.')) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t return this.finalize(node, new Node.Super());\n\t };\n\t Parser.prototype.parseLeftHandSideExpression = function () {\n\t assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.');\n\t var node = this.startNode(this.lookahead);\n\t var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() :\n\t this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);\n\t while (true) {\n\t if (this.match('[')) {\n\t this.context.isBindingElement = false;\n\t this.context.isAssignmentTarget = true;\n\t this.expect('[');\n\t var property = this.isolateCoverGrammar(this.parseExpression);\n\t this.expect(']');\n\t expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property));\n\t }\n\t else if (this.match('.')) {\n\t this.context.isBindingElement = false;\n\t this.context.isAssignmentTarget = true;\n\t this.expect('.');\n\t var property = this.parseIdentifierName();\n\t expr = this.finalize(node, new Node.StaticMemberExpression(expr, property));\n\t }\n\t else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) {\n\t var quasi = this.parseTemplateLiteral();\n\t expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi));\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-update-expressions\n\t Parser.prototype.parseUpdateExpression = function () {\n\t var expr;\n\t var startToken = this.lookahead;\n\t if (this.match('++') || this.match('--')) {\n\t var node = this.startNode(startToken);\n\t var token = this.nextToken();\n\t expr = this.inheritCoverGrammar(this.parseUnaryExpression);\n\t if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {\n\t this.tolerateError(messages_1.Messages.StrictLHSPrefix);\n\t }\n\t if (!this.context.isAssignmentTarget) {\n\t this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);\n\t }\n\t var prefix = true;\n\t expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix));\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t }\n\t else {\n\t expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall);\n\t if (!this.hasLineTerminator && this.lookahead.type === 7 /* Punctuator */) {\n\t if (this.match('++') || this.match('--')) {\n\t if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {\n\t this.tolerateError(messages_1.Messages.StrictLHSPostfix);\n\t }\n\t if (!this.context.isAssignmentTarget) {\n\t this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);\n\t }\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t var operator = this.nextToken().value;\n\t var prefix = false;\n\t expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix));\n\t }\n\t }\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-unary-operators\n\t Parser.prototype.parseAwaitExpression = function () {\n\t var node = this.createNode();\n\t this.nextToken();\n\t var argument = this.parseUnaryExpression();\n\t return this.finalize(node, new Node.AwaitExpression(argument));\n\t };\n\t Parser.prototype.parseUnaryExpression = function () {\n\t var expr;\n\t if (this.match('+') || this.match('-') || this.match('~') || this.match('!') ||\n\t this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) {\n\t var node = this.startNode(this.lookahead);\n\t var token = this.nextToken();\n\t expr = this.inheritCoverGrammar(this.parseUnaryExpression);\n\t expr = this.finalize(node, new Node.UnaryExpression(token.value, expr));\n\t if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) {\n\t this.tolerateError(messages_1.Messages.StrictDelete);\n\t }\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t }\n\t else if (this.context.await && this.matchContextualKeyword('await')) {\n\t expr = this.parseAwaitExpression();\n\t }\n\t else {\n\t expr = this.parseUpdateExpression();\n\t }\n\t return expr;\n\t };\n\t Parser.prototype.parseExponentiationExpression = function () {\n\t var startToken = this.lookahead;\n\t var expr = this.inheritCoverGrammar(this.parseUnaryExpression);\n\t if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) {\n\t this.nextToken();\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t var left = expr;\n\t var right = this.isolateCoverGrammar(this.parseExponentiationExpression);\n\t expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right));\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-exp-operator\n\t // https://tc39.github.io/ecma262/#sec-multiplicative-operators\n\t // https://tc39.github.io/ecma262/#sec-additive-operators\n\t // https://tc39.github.io/ecma262/#sec-bitwise-shift-operators\n\t // https://tc39.github.io/ecma262/#sec-relational-operators\n\t // https://tc39.github.io/ecma262/#sec-equality-operators\n\t // https://tc39.github.io/ecma262/#sec-binary-bitwise-operators\n\t // https://tc39.github.io/ecma262/#sec-binary-logical-operators\n\t Parser.prototype.binaryPrecedence = function (token) {\n\t var op = token.value;\n\t var precedence;\n\t if (token.type === 7 /* Punctuator */) {\n\t precedence = this.operatorPrecedence[op] || 0;\n\t }\n\t else if (token.type === 4 /* Keyword */) {\n\t precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0;\n\t }\n\t else {\n\t precedence = 0;\n\t }\n\t return precedence;\n\t };\n\t Parser.prototype.parseBinaryExpression = function () {\n\t var startToken = this.lookahead;\n\t var expr = this.inheritCoverGrammar(this.parseExponentiationExpression);\n\t var token = this.lookahead;\n\t var prec = this.binaryPrecedence(token);\n\t if (prec > 0) {\n\t this.nextToken();\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t var markers = [startToken, this.lookahead];\n\t var left = expr;\n\t var right = this.isolateCoverGrammar(this.parseExponentiationExpression);\n\t var stack = [left, token.value, right];\n\t var precedences = [prec];\n\t while (true) {\n\t prec = this.binaryPrecedence(this.lookahead);\n\t if (prec <= 0) {\n\t break;\n\t }\n\t // Reduce: make a binary expression from the three topmost entries.\n\t while ((stack.length > 2) && (prec <= precedences[precedences.length - 1])) {\n\t right = stack.pop();\n\t var operator = stack.pop();\n\t precedences.pop();\n\t left = stack.pop();\n\t markers.pop();\n\t var node = this.startNode(markers[markers.length - 1]);\n\t stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right)));\n\t }\n\t // Shift.\n\t stack.push(this.nextToken().value);\n\t precedences.push(prec);\n\t markers.push(this.lookahead);\n\t stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression));\n\t }\n\t // Final reduce to clean-up the stack.\n\t var i = stack.length - 1;\n\t expr = stack[i];\n\t var lastMarker = markers.pop();\n\t while (i > 1) {\n\t var marker = markers.pop();\n\t var lastLineStart = lastMarker && lastMarker.lineStart;\n\t var node = this.startNode(marker, lastLineStart);\n\t var operator = stack[i - 1];\n\t expr = this.finalize(node, new Node.BinaryExpression(operator, stack[i - 2], expr));\n\t i -= 2;\n\t lastMarker = marker;\n\t }\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-conditional-operator\n\t Parser.prototype.parseConditionalExpression = function () {\n\t var startToken = this.lookahead;\n\t var expr = this.inheritCoverGrammar(this.parseBinaryExpression);\n\t if (this.match('?')) {\n\t this.nextToken();\n\t var previousAllowIn = this.context.allowIn;\n\t this.context.allowIn = true;\n\t var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t this.context.allowIn = previousAllowIn;\n\t this.expect(':');\n\t var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate));\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-assignment-operators\n\t Parser.prototype.checkPatternParam = function (options, param) {\n\t switch (param.type) {\n\t case syntax_1.Syntax.Identifier:\n\t this.validateParam(options, param, param.name);\n\t break;\n\t case syntax_1.Syntax.RestElement:\n\t this.checkPatternParam(options, param.argument);\n\t break;\n\t case syntax_1.Syntax.AssignmentPattern:\n\t this.checkPatternParam(options, param.left);\n\t break;\n\t case syntax_1.Syntax.ArrayPattern:\n\t for (var i = 0; i < param.elements.length; i++) {\n\t if (param.elements[i] !== null) {\n\t this.checkPatternParam(options, param.elements[i]);\n\t }\n\t }\n\t break;\n\t case syntax_1.Syntax.ObjectPattern:\n\t for (var i = 0; i < param.properties.length; i++) {\n\t this.checkPatternParam(options, param.properties[i].value);\n\t }\n\t break;\n\t default:\n\t break;\n\t }\n\t options.simple = options.simple && (param instanceof Node.Identifier);\n\t };\n\t Parser.prototype.reinterpretAsCoverFormalsList = function (expr) {\n\t var params = [expr];\n\t var options;\n\t var asyncArrow = false;\n\t switch (expr.type) {\n\t case syntax_1.Syntax.Identifier:\n\t break;\n\t case ArrowParameterPlaceHolder:\n\t params = expr.params;\n\t asyncArrow = expr.async;\n\t break;\n\t default:\n\t return null;\n\t }\n\t options = {\n\t simple: true,\n\t paramSet: {}\n\t };\n\t for (var i = 0; i < params.length; ++i) {\n\t var param = params[i];\n\t if (param.type === syntax_1.Syntax.AssignmentPattern) {\n\t if (param.right.type === syntax_1.Syntax.YieldExpression) {\n\t if (param.right.argument) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t param.right.type = syntax_1.Syntax.Identifier;\n\t param.right.name = 'yield';\n\t delete param.right.argument;\n\t delete param.right.delegate;\n\t }\n\t }\n\t else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t this.checkPatternParam(options, param);\n\t params[i] = param;\n\t }\n\t if (this.context.strict || !this.context.allowYield) {\n\t for (var i = 0; i < params.length; ++i) {\n\t var param = params[i];\n\t if (param.type === syntax_1.Syntax.YieldExpression) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t }\n\t }\n\t if (options.message === messages_1.Messages.StrictParamDupe) {\n\t var token = this.context.strict ? options.stricted : options.firstRestricted;\n\t this.throwUnexpectedToken(token, options.message);\n\t }\n\t return {\n\t simple: options.simple,\n\t params: params,\n\t stricted: options.stricted,\n\t firstRestricted: options.firstRestricted,\n\t message: options.message\n\t };\n\t };\n\t Parser.prototype.parseAssignmentExpression = function () {\n\t var expr;\n\t if (!this.context.allowYield && this.matchKeyword('yield')) {\n\t expr = this.parseYieldExpression();\n\t }\n\t else {\n\t var startToken = this.lookahead;\n\t var token = startToken;\n\t expr = this.parseConditionalExpression();\n\t if (token.type === 3 /* Identifier */ && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async') {\n\t if (this.lookahead.type === 3 /* Identifier */ || this.matchKeyword('yield')) {\n\t var arg = this.parsePrimaryExpression();\n\t this.reinterpretExpressionAsPattern(arg);\n\t expr = {\n\t type: ArrowParameterPlaceHolder,\n\t params: [arg],\n\t async: true\n\t };\n\t }\n\t }\n\t if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) {\n\t // https://tc39.github.io/ecma262/#sec-arrow-function-definitions\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t var isAsync = expr.async;\n\t var list = this.reinterpretAsCoverFormalsList(expr);\n\t if (list) {\n\t if (this.hasLineTerminator) {\n\t this.tolerateUnexpectedToken(this.lookahead);\n\t }\n\t this.context.firstCoverInitializedNameError = null;\n\t var previousStrict = this.context.strict;\n\t var previousAllowStrictDirective = this.context.allowStrictDirective;\n\t this.context.allowStrictDirective = list.simple;\n\t var previousAllowYield = this.context.allowYield;\n\t var previousAwait = this.context.await;\n\t this.context.allowYield = true;\n\t this.context.await = isAsync;\n\t var node = this.startNode(startToken);\n\t this.expect('=>');\n\t var body = void 0;\n\t if (this.match('{')) {\n\t var previousAllowIn = this.context.allowIn;\n\t this.context.allowIn = true;\n\t body = this.parseFunctionSourceElements();\n\t this.context.allowIn = previousAllowIn;\n\t }\n\t else {\n\t body = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t }\n\t var expression = body.type !== syntax_1.Syntax.BlockStatement;\n\t if (this.context.strict && list.firstRestricted) {\n\t this.throwUnexpectedToken(list.firstRestricted, list.message);\n\t }\n\t if (this.context.strict && list.stricted) {\n\t this.tolerateUnexpectedToken(list.stricted, list.message);\n\t }\n\t expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) :\n\t this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression));\n\t this.context.strict = previousStrict;\n\t this.context.allowStrictDirective = previousAllowStrictDirective;\n\t this.context.allowYield = previousAllowYield;\n\t this.context.await = previousAwait;\n\t }\n\t }\n\t else {\n\t if (this.matchAssign()) {\n\t if (!this.context.isAssignmentTarget) {\n\t this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);\n\t }\n\t if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) {\n\t var id = expr;\n\t if (this.scanner.isRestrictedWord(id.name)) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment);\n\t }\n\t if (this.scanner.isStrictModeReservedWord(id.name)) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);\n\t }\n\t }\n\t if (!this.match('=')) {\n\t this.context.isAssignmentTarget = false;\n\t this.context.isBindingElement = false;\n\t }\n\t else {\n\t this.reinterpretExpressionAsPattern(expr);\n\t }\n\t token = this.nextToken();\n\t var operator = token.value;\n\t var right = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(operator, expr, right));\n\t this.context.firstCoverInitializedNameError = null;\n\t }\n\t }\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-comma-operator\n\t Parser.prototype.parseExpression = function () {\n\t var startToken = this.lookahead;\n\t var expr = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t if (this.match(',')) {\n\t var expressions = [];\n\t expressions.push(expr);\n\t while (this.lookahead.type !== 2 /* EOF */) {\n\t if (!this.match(',')) {\n\t break;\n\t }\n\t this.nextToken();\n\t expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression));\n\t }\n\t expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));\n\t }\n\t return expr;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-block\n\t Parser.prototype.parseStatementListItem = function () {\n\t var statement;\n\t this.context.isAssignmentTarget = true;\n\t this.context.isBindingElement = true;\n\t if (this.lookahead.type === 4 /* Keyword */) {\n\t switch (this.lookahead.value) {\n\t case 'export':\n\t if (!this.context.isModule) {\n\t this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration);\n\t }\n\t statement = this.parseExportDeclaration();\n\t break;\n\t case 'import':\n\t if (!this.context.isModule) {\n\t this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration);\n\t }\n\t statement = this.parseImportDeclaration();\n\t break;\n\t case 'const':\n\t statement = this.parseLexicalDeclaration({ inFor: false });\n\t break;\n\t case 'function':\n\t statement = this.parseFunctionDeclaration();\n\t break;\n\t case 'class':\n\t statement = this.parseClassDeclaration();\n\t break;\n\t case 'let':\n\t statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement();\n\t break;\n\t default:\n\t statement = this.parseStatement();\n\t break;\n\t }\n\t }\n\t else {\n\t statement = this.parseStatement();\n\t }\n\t return statement;\n\t };\n\t Parser.prototype.parseBlock = function () {\n\t var node = this.createNode();\n\t this.expect('{');\n\t var block = [];\n\t while (true) {\n\t if (this.match('}')) {\n\t break;\n\t }\n\t block.push(this.parseStatementListItem());\n\t }\n\t this.expect('}');\n\t return this.finalize(node, new Node.BlockStatement(block));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-let-and-const-declarations\n\t Parser.prototype.parseLexicalBinding = function (kind, options) {\n\t var node = this.createNode();\n\t var params = [];\n\t var id = this.parsePattern(params, kind);\n\t if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {\n\t if (this.scanner.isRestrictedWord(id.name)) {\n\t this.tolerateError(messages_1.Messages.StrictVarName);\n\t }\n\t }\n\t var init = null;\n\t if (kind === 'const') {\n\t if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) {\n\t if (this.match('=')) {\n\t this.nextToken();\n\t init = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t }\n\t else {\n\t this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const');\n\t }\n\t }\n\t }\n\t else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) {\n\t this.expect('=');\n\t init = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t }\n\t return this.finalize(node, new Node.VariableDeclarator(id, init));\n\t };\n\t Parser.prototype.parseBindingList = function (kind, options) {\n\t var list = [this.parseLexicalBinding(kind, options)];\n\t while (this.match(',')) {\n\t this.nextToken();\n\t list.push(this.parseLexicalBinding(kind, options));\n\t }\n\t return list;\n\t };\n\t Parser.prototype.isLexicalDeclaration = function () {\n\t var state = this.scanner.saveState();\n\t this.scanner.scanComments();\n\t var next = this.scanner.lex();\n\t this.scanner.restoreState(state);\n\t return (next.type === 3 /* Identifier */) ||\n\t (next.type === 7 /* Punctuator */ && next.value === '[') ||\n\t (next.type === 7 /* Punctuator */ && next.value === '{') ||\n\t (next.type === 4 /* Keyword */ && next.value === 'let') ||\n\t (next.type === 4 /* Keyword */ && next.value === 'yield');\n\t };\n\t Parser.prototype.parseLexicalDeclaration = function (options) {\n\t var node = this.createNode();\n\t var kind = this.nextToken().value;\n\t assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const');\n\t var declarations = this.parseBindingList(kind, options);\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.VariableDeclaration(declarations, kind));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-destructuring-binding-patterns\n\t Parser.prototype.parseBindingRestElement = function (params, kind) {\n\t var node = this.createNode();\n\t this.expect('...');\n\t var arg = this.parsePattern(params, kind);\n\t return this.finalize(node, new Node.RestElement(arg));\n\t };\n\t Parser.prototype.parseArrayPattern = function (params, kind) {\n\t var node = this.createNode();\n\t this.expect('[');\n\t var elements = [];\n\t while (!this.match(']')) {\n\t if (this.match(',')) {\n\t this.nextToken();\n\t elements.push(null);\n\t }\n\t else {\n\t if (this.match('...')) {\n\t elements.push(this.parseBindingRestElement(params, kind));\n\t break;\n\t }\n\t else {\n\t elements.push(this.parsePatternWithDefault(params, kind));\n\t }\n\t if (!this.match(']')) {\n\t this.expect(',');\n\t }\n\t }\n\t }\n\t this.expect(']');\n\t return this.finalize(node, new Node.ArrayPattern(elements));\n\t };\n\t Parser.prototype.parsePropertyPattern = function (params, kind) {\n\t var node = this.createNode();\n\t var computed = false;\n\t var shorthand = false;\n\t var method = false;\n\t var key;\n\t var value;\n\t if (this.lookahead.type === 3 /* Identifier */) {\n\t var keyToken = this.lookahead;\n\t key = this.parseVariableIdentifier();\n\t var init = this.finalize(node, new Node.Identifier(keyToken.value));\n\t if (this.match('=')) {\n\t params.push(keyToken);\n\t shorthand = true;\n\t this.nextToken();\n\t var expr = this.parseAssignmentExpression();\n\t value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr));\n\t }\n\t else if (!this.match(':')) {\n\t params.push(keyToken);\n\t shorthand = true;\n\t value = init;\n\t }\n\t else {\n\t this.expect(':');\n\t value = this.parsePatternWithDefault(params, kind);\n\t }\n\t }\n\t else {\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t this.expect(':');\n\t value = this.parsePatternWithDefault(params, kind);\n\t }\n\t return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand));\n\t };\n\t Parser.prototype.parseObjectPattern = function (params, kind) {\n\t var node = this.createNode();\n\t var properties = [];\n\t this.expect('{');\n\t while (!this.match('}')) {\n\t properties.push(this.parsePropertyPattern(params, kind));\n\t if (!this.match('}')) {\n\t this.expect(',');\n\t }\n\t }\n\t this.expect('}');\n\t return this.finalize(node, new Node.ObjectPattern(properties));\n\t };\n\t Parser.prototype.parsePattern = function (params, kind) {\n\t var pattern;\n\t if (this.match('[')) {\n\t pattern = this.parseArrayPattern(params, kind);\n\t }\n\t else if (this.match('{')) {\n\t pattern = this.parseObjectPattern(params, kind);\n\t }\n\t else {\n\t if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) {\n\t this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding);\n\t }\n\t params.push(this.lookahead);\n\t pattern = this.parseVariableIdentifier(kind);\n\t }\n\t return pattern;\n\t };\n\t Parser.prototype.parsePatternWithDefault = function (params, kind) {\n\t var startToken = this.lookahead;\n\t var pattern = this.parsePattern(params, kind);\n\t if (this.match('=')) {\n\t this.nextToken();\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.allowYield = true;\n\t var right = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t this.context.allowYield = previousAllowYield;\n\t pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right));\n\t }\n\t return pattern;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-variable-statement\n\t Parser.prototype.parseVariableIdentifier = function (kind) {\n\t var node = this.createNode();\n\t var token = this.nextToken();\n\t if (token.type === 4 /* Keyword */ && token.value === 'yield') {\n\t if (this.context.strict) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);\n\t }\n\t else if (!this.context.allowYield) {\n\t this.throwUnexpectedToken(token);\n\t }\n\t }\n\t else if (token.type !== 3 /* Identifier */) {\n\t if (this.context.strict && token.type === 4 /* Keyword */ && this.scanner.isStrictModeReservedWord(token.value)) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);\n\t }\n\t else {\n\t if (this.context.strict || token.value !== 'let' || kind !== 'var') {\n\t this.throwUnexpectedToken(token);\n\t }\n\t }\n\t }\n\t else if ((this.context.isModule || this.context.await) && token.type === 3 /* Identifier */ && token.value === 'await') {\n\t this.tolerateUnexpectedToken(token);\n\t }\n\t return this.finalize(node, new Node.Identifier(token.value));\n\t };\n\t Parser.prototype.parseVariableDeclaration = function (options) {\n\t var node = this.createNode();\n\t var params = [];\n\t var id = this.parsePattern(params, 'var');\n\t if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {\n\t if (this.scanner.isRestrictedWord(id.name)) {\n\t this.tolerateError(messages_1.Messages.StrictVarName);\n\t }\n\t }\n\t var init = null;\n\t if (this.match('=')) {\n\t this.nextToken();\n\t init = this.isolateCoverGrammar(this.parseAssignmentExpression);\n\t }\n\t else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) {\n\t this.expect('=');\n\t }\n\t return this.finalize(node, new Node.VariableDeclarator(id, init));\n\t };\n\t Parser.prototype.parseVariableDeclarationList = function (options) {\n\t var opt = { inFor: options.inFor };\n\t var list = [];\n\t list.push(this.parseVariableDeclaration(opt));\n\t while (this.match(',')) {\n\t this.nextToken();\n\t list.push(this.parseVariableDeclaration(opt));\n\t }\n\t return list;\n\t };\n\t Parser.prototype.parseVariableStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('var');\n\t var declarations = this.parseVariableDeclarationList({ inFor: false });\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.VariableDeclaration(declarations, 'var'));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-empty-statement\n\t Parser.prototype.parseEmptyStatement = function () {\n\t var node = this.createNode();\n\t this.expect(';');\n\t return this.finalize(node, new Node.EmptyStatement());\n\t };\n\t // https://tc39.github.io/ecma262/#sec-expression-statement\n\t Parser.prototype.parseExpressionStatement = function () {\n\t var node = this.createNode();\n\t var expr = this.parseExpression();\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.ExpressionStatement(expr));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-if-statement\n\t Parser.prototype.parseIfClause = function () {\n\t if (this.context.strict && this.matchKeyword('function')) {\n\t this.tolerateError(messages_1.Messages.StrictFunction);\n\t }\n\t return this.parseStatement();\n\t };\n\t Parser.prototype.parseIfStatement = function () {\n\t var node = this.createNode();\n\t var consequent;\n\t var alternate = null;\n\t this.expectKeyword('if');\n\t this.expect('(');\n\t var test = this.parseExpression();\n\t if (!this.match(')') && this.config.tolerant) {\n\t this.tolerateUnexpectedToken(this.nextToken());\n\t consequent = this.finalize(this.createNode(), new Node.EmptyStatement());\n\t }\n\t else {\n\t this.expect(')');\n\t consequent = this.parseIfClause();\n\t if (this.matchKeyword('else')) {\n\t this.nextToken();\n\t alternate = this.parseIfClause();\n\t }\n\t }\n\t return this.finalize(node, new Node.IfStatement(test, consequent, alternate));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-do-while-statement\n\t Parser.prototype.parseDoWhileStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('do');\n\t var previousInIteration = this.context.inIteration;\n\t this.context.inIteration = true;\n\t var body = this.parseStatement();\n\t this.context.inIteration = previousInIteration;\n\t this.expectKeyword('while');\n\t this.expect('(');\n\t var test = this.parseExpression();\n\t if (!this.match(')') && this.config.tolerant) {\n\t this.tolerateUnexpectedToken(this.nextToken());\n\t }\n\t else {\n\t this.expect(')');\n\t if (this.match(';')) {\n\t this.nextToken();\n\t }\n\t }\n\t return this.finalize(node, new Node.DoWhileStatement(body, test));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-while-statement\n\t Parser.prototype.parseWhileStatement = function () {\n\t var node = this.createNode();\n\t var body;\n\t this.expectKeyword('while');\n\t this.expect('(');\n\t var test = this.parseExpression();\n\t if (!this.match(')') && this.config.tolerant) {\n\t this.tolerateUnexpectedToken(this.nextToken());\n\t body = this.finalize(this.createNode(), new Node.EmptyStatement());\n\t }\n\t else {\n\t this.expect(')');\n\t var previousInIteration = this.context.inIteration;\n\t this.context.inIteration = true;\n\t body = this.parseStatement();\n\t this.context.inIteration = previousInIteration;\n\t }\n\t return this.finalize(node, new Node.WhileStatement(test, body));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-for-statement\n\t // https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements\n\t Parser.prototype.parseForStatement = function () {\n\t var init = null;\n\t var test = null;\n\t var update = null;\n\t var forIn = true;\n\t var left, right;\n\t var node = this.createNode();\n\t this.expectKeyword('for');\n\t this.expect('(');\n\t if (this.match(';')) {\n\t this.nextToken();\n\t }\n\t else {\n\t if (this.matchKeyword('var')) {\n\t init = this.createNode();\n\t this.nextToken();\n\t var previousAllowIn = this.context.allowIn;\n\t this.context.allowIn = false;\n\t var declarations = this.parseVariableDeclarationList({ inFor: true });\n\t this.context.allowIn = previousAllowIn;\n\t if (declarations.length === 1 && this.matchKeyword('in')) {\n\t var decl = declarations[0];\n\t if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) {\n\t this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in');\n\t }\n\t init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));\n\t this.nextToken();\n\t left = init;\n\t right = this.parseExpression();\n\t init = null;\n\t }\n\t else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {\n\t init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));\n\t this.nextToken();\n\t left = init;\n\t right = this.parseAssignmentExpression();\n\t init = null;\n\t forIn = false;\n\t }\n\t else {\n\t init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));\n\t this.expect(';');\n\t }\n\t }\n\t else if (this.matchKeyword('const') || this.matchKeyword('let')) {\n\t init = this.createNode();\n\t var kind = this.nextToken().value;\n\t if (!this.context.strict && this.lookahead.value === 'in') {\n\t init = this.finalize(init, new Node.Identifier(kind));\n\t this.nextToken();\n\t left = init;\n\t right = this.parseExpression();\n\t init = null;\n\t }\n\t else {\n\t var previousAllowIn = this.context.allowIn;\n\t this.context.allowIn = false;\n\t var declarations = this.parseBindingList(kind, { inFor: true });\n\t this.context.allowIn = previousAllowIn;\n\t if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) {\n\t init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));\n\t this.nextToken();\n\t left = init;\n\t right = this.parseExpression();\n\t init = null;\n\t }\n\t else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {\n\t init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));\n\t this.nextToken();\n\t left = init;\n\t right = this.parseAssignmentExpression();\n\t init = null;\n\t forIn = false;\n\t }\n\t else {\n\t this.consumeSemicolon();\n\t init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));\n\t }\n\t }\n\t }\n\t else {\n\t var initStartToken = this.lookahead;\n\t var previousAllowIn = this.context.allowIn;\n\t this.context.allowIn = false;\n\t init = this.inheritCoverGrammar(this.parseAssignmentExpression);\n\t this.context.allowIn = previousAllowIn;\n\t if (this.matchKeyword('in')) {\n\t if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {\n\t this.tolerateError(messages_1.Messages.InvalidLHSInForIn);\n\t }\n\t this.nextToken();\n\t this.reinterpretExpressionAsPattern(init);\n\t left = init;\n\t right = this.parseExpression();\n\t init = null;\n\t }\n\t else if (this.matchContextualKeyword('of')) {\n\t if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {\n\t this.tolerateError(messages_1.Messages.InvalidLHSInForLoop);\n\t }\n\t this.nextToken();\n\t this.reinterpretExpressionAsPattern(init);\n\t left = init;\n\t right = this.parseAssignmentExpression();\n\t init = null;\n\t forIn = false;\n\t }\n\t else {\n\t if (this.match(',')) {\n\t var initSeq = [init];\n\t while (this.match(',')) {\n\t this.nextToken();\n\t initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression));\n\t }\n\t init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq));\n\t }\n\t this.expect(';');\n\t }\n\t }\n\t }\n\t if (typeof left === 'undefined') {\n\t if (!this.match(';')) {\n\t test = this.parseExpression();\n\t }\n\t this.expect(';');\n\t if (!this.match(')')) {\n\t update = this.parseExpression();\n\t }\n\t }\n\t var body;\n\t if (!this.match(')') && this.config.tolerant) {\n\t this.tolerateUnexpectedToken(this.nextToken());\n\t body = this.finalize(this.createNode(), new Node.EmptyStatement());\n\t }\n\t else {\n\t this.expect(')');\n\t var previousInIteration = this.context.inIteration;\n\t this.context.inIteration = true;\n\t body = this.isolateCoverGrammar(this.parseStatement);\n\t this.context.inIteration = previousInIteration;\n\t }\n\t return (typeof left === 'undefined') ?\n\t this.finalize(node, new Node.ForStatement(init, test, update, body)) :\n\t forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) :\n\t this.finalize(node, new Node.ForOfStatement(left, right, body));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-continue-statement\n\t Parser.prototype.parseContinueStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('continue');\n\t var label = null;\n\t if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) {\n\t var id = this.parseVariableIdentifier();\n\t label = id;\n\t var key = '$' + id.name;\n\t if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {\n\t this.throwError(messages_1.Messages.UnknownLabel, id.name);\n\t }\n\t }\n\t this.consumeSemicolon();\n\t if (label === null && !this.context.inIteration) {\n\t this.throwError(messages_1.Messages.IllegalContinue);\n\t }\n\t return this.finalize(node, new Node.ContinueStatement(label));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-break-statement\n\t Parser.prototype.parseBreakStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('break');\n\t var label = null;\n\t if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) {\n\t var id = this.parseVariableIdentifier();\n\t var key = '$' + id.name;\n\t if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {\n\t this.throwError(messages_1.Messages.UnknownLabel, id.name);\n\t }\n\t label = id;\n\t }\n\t this.consumeSemicolon();\n\t if (label === null && !this.context.inIteration && !this.context.inSwitch) {\n\t this.throwError(messages_1.Messages.IllegalBreak);\n\t }\n\t return this.finalize(node, new Node.BreakStatement(label));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-return-statement\n\t Parser.prototype.parseReturnStatement = function () {\n\t if (!this.context.inFunctionBody) {\n\t this.tolerateError(messages_1.Messages.IllegalReturn);\n\t }\n\t var node = this.createNode();\n\t this.expectKeyword('return');\n\t var hasArgument = (!this.match(';') && !this.match('}') &&\n\t !this.hasLineTerminator && this.lookahead.type !== 2 /* EOF */) ||\n\t this.lookahead.type === 8 /* StringLiteral */ ||\n\t this.lookahead.type === 10 /* Template */;\n\t var argument = hasArgument ? this.parseExpression() : null;\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.ReturnStatement(argument));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-with-statement\n\t Parser.prototype.parseWithStatement = function () {\n\t if (this.context.strict) {\n\t this.tolerateError(messages_1.Messages.StrictModeWith);\n\t }\n\t var node = this.createNode();\n\t var body;\n\t this.expectKeyword('with');\n\t this.expect('(');\n\t var object = this.parseExpression();\n\t if (!this.match(')') && this.config.tolerant) {\n\t this.tolerateUnexpectedToken(this.nextToken());\n\t body = this.finalize(this.createNode(), new Node.EmptyStatement());\n\t }\n\t else {\n\t this.expect(')');\n\t body = this.parseStatement();\n\t }\n\t return this.finalize(node, new Node.WithStatement(object, body));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-switch-statement\n\t Parser.prototype.parseSwitchCase = function () {\n\t var node = this.createNode();\n\t var test;\n\t if (this.matchKeyword('default')) {\n\t this.nextToken();\n\t test = null;\n\t }\n\t else {\n\t this.expectKeyword('case');\n\t test = this.parseExpression();\n\t }\n\t this.expect(':');\n\t var consequent = [];\n\t while (true) {\n\t if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) {\n\t break;\n\t }\n\t consequent.push(this.parseStatementListItem());\n\t }\n\t return this.finalize(node, new Node.SwitchCase(test, consequent));\n\t };\n\t Parser.prototype.parseSwitchStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('switch');\n\t this.expect('(');\n\t var discriminant = this.parseExpression();\n\t this.expect(')');\n\t var previousInSwitch = this.context.inSwitch;\n\t this.context.inSwitch = true;\n\t var cases = [];\n\t var defaultFound = false;\n\t this.expect('{');\n\t while (true) {\n\t if (this.match('}')) {\n\t break;\n\t }\n\t var clause = this.parseSwitchCase();\n\t if (clause.test === null) {\n\t if (defaultFound) {\n\t this.throwError(messages_1.Messages.MultipleDefaultsInSwitch);\n\t }\n\t defaultFound = true;\n\t }\n\t cases.push(clause);\n\t }\n\t this.expect('}');\n\t this.context.inSwitch = previousInSwitch;\n\t return this.finalize(node, new Node.SwitchStatement(discriminant, cases));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-labelled-statements\n\t Parser.prototype.parseLabelledStatement = function () {\n\t var node = this.createNode();\n\t var expr = this.parseExpression();\n\t var statement;\n\t if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) {\n\t this.nextToken();\n\t var id = expr;\n\t var key = '$' + id.name;\n\t if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {\n\t this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name);\n\t }\n\t this.context.labelSet[key] = true;\n\t var body = void 0;\n\t if (this.matchKeyword('class')) {\n\t this.tolerateUnexpectedToken(this.lookahead);\n\t body = this.parseClassDeclaration();\n\t }\n\t else if (this.matchKeyword('function')) {\n\t var token = this.lookahead;\n\t var declaration = this.parseFunctionDeclaration();\n\t if (this.context.strict) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunction);\n\t }\n\t else if (declaration.generator) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.GeneratorInLegacyContext);\n\t }\n\t body = declaration;\n\t }\n\t else {\n\t body = this.parseStatement();\n\t }\n\t delete this.context.labelSet[key];\n\t statement = new Node.LabeledStatement(id, body);\n\t }\n\t else {\n\t this.consumeSemicolon();\n\t statement = new Node.ExpressionStatement(expr);\n\t }\n\t return this.finalize(node, statement);\n\t };\n\t // https://tc39.github.io/ecma262/#sec-throw-statement\n\t Parser.prototype.parseThrowStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('throw');\n\t if (this.hasLineTerminator) {\n\t this.throwError(messages_1.Messages.NewlineAfterThrow);\n\t }\n\t var argument = this.parseExpression();\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.ThrowStatement(argument));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-try-statement\n\t Parser.prototype.parseCatchClause = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('catch');\n\t this.expect('(');\n\t if (this.match(')')) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t var params = [];\n\t var param = this.parsePattern(params);\n\t var paramMap = {};\n\t for (var i = 0; i < params.length; i++) {\n\t var key = '$' + params[i].value;\n\t if (Object.prototype.hasOwnProperty.call(paramMap, key)) {\n\t this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value);\n\t }\n\t paramMap[key] = true;\n\t }\n\t if (this.context.strict && param.type === syntax_1.Syntax.Identifier) {\n\t if (this.scanner.isRestrictedWord(param.name)) {\n\t this.tolerateError(messages_1.Messages.StrictCatchVariable);\n\t }\n\t }\n\t this.expect(')');\n\t var body = this.parseBlock();\n\t return this.finalize(node, new Node.CatchClause(param, body));\n\t };\n\t Parser.prototype.parseFinallyClause = function () {\n\t this.expectKeyword('finally');\n\t return this.parseBlock();\n\t };\n\t Parser.prototype.parseTryStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('try');\n\t var block = this.parseBlock();\n\t var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null;\n\t var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null;\n\t if (!handler && !finalizer) {\n\t this.throwError(messages_1.Messages.NoCatchOrFinally);\n\t }\n\t return this.finalize(node, new Node.TryStatement(block, handler, finalizer));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-debugger-statement\n\t Parser.prototype.parseDebuggerStatement = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('debugger');\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.DebuggerStatement());\n\t };\n\t // https://tc39.github.io/ecma262/#sec-ecmascript-language-statements-and-declarations\n\t Parser.prototype.parseStatement = function () {\n\t var statement;\n\t switch (this.lookahead.type) {\n\t case 1 /* BooleanLiteral */:\n\t case 5 /* NullLiteral */:\n\t case 6 /* NumericLiteral */:\n\t case 8 /* StringLiteral */:\n\t case 10 /* Template */:\n\t case 9 /* RegularExpression */:\n\t statement = this.parseExpressionStatement();\n\t break;\n\t case 7 /* Punctuator */:\n\t var value = this.lookahead.value;\n\t if (value === '{') {\n\t statement = this.parseBlock();\n\t }\n\t else if (value === '(') {\n\t statement = this.parseExpressionStatement();\n\t }\n\t else if (value === ';') {\n\t statement = this.parseEmptyStatement();\n\t }\n\t else {\n\t statement = this.parseExpressionStatement();\n\t }\n\t break;\n\t case 3 /* Identifier */:\n\t statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement();\n\t break;\n\t case 4 /* Keyword */:\n\t switch (this.lookahead.value) {\n\t case 'break':\n\t statement = this.parseBreakStatement();\n\t break;\n\t case 'continue':\n\t statement = this.parseContinueStatement();\n\t break;\n\t case 'debugger':\n\t statement = this.parseDebuggerStatement();\n\t break;\n\t case 'do':\n\t statement = this.parseDoWhileStatement();\n\t break;\n\t case 'for':\n\t statement = this.parseForStatement();\n\t break;\n\t case 'function':\n\t statement = this.parseFunctionDeclaration();\n\t break;\n\t case 'if':\n\t statement = this.parseIfStatement();\n\t break;\n\t case 'return':\n\t statement = this.parseReturnStatement();\n\t break;\n\t case 'switch':\n\t statement = this.parseSwitchStatement();\n\t break;\n\t case 'throw':\n\t statement = this.parseThrowStatement();\n\t break;\n\t case 'try':\n\t statement = this.parseTryStatement();\n\t break;\n\t case 'var':\n\t statement = this.parseVariableStatement();\n\t break;\n\t case 'while':\n\t statement = this.parseWhileStatement();\n\t break;\n\t case 'with':\n\t statement = this.parseWithStatement();\n\t break;\n\t default:\n\t statement = this.parseExpressionStatement();\n\t break;\n\t }\n\t break;\n\t default:\n\t statement = this.throwUnexpectedToken(this.lookahead);\n\t }\n\t return statement;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-function-definitions\n\t Parser.prototype.parseFunctionSourceElements = function () {\n\t var node = this.createNode();\n\t this.expect('{');\n\t var body = this.parseDirectivePrologues();\n\t var previousLabelSet = this.context.labelSet;\n\t var previousInIteration = this.context.inIteration;\n\t var previousInSwitch = this.context.inSwitch;\n\t var previousInFunctionBody = this.context.inFunctionBody;\n\t this.context.labelSet = {};\n\t this.context.inIteration = false;\n\t this.context.inSwitch = false;\n\t this.context.inFunctionBody = true;\n\t while (this.lookahead.type !== 2 /* EOF */) {\n\t if (this.match('}')) {\n\t break;\n\t }\n\t body.push(this.parseStatementListItem());\n\t }\n\t this.expect('}');\n\t this.context.labelSet = previousLabelSet;\n\t this.context.inIteration = previousInIteration;\n\t this.context.inSwitch = previousInSwitch;\n\t this.context.inFunctionBody = previousInFunctionBody;\n\t return this.finalize(node, new Node.BlockStatement(body));\n\t };\n\t Parser.prototype.validateParam = function (options, param, name) {\n\t var key = '$' + name;\n\t if (this.context.strict) {\n\t if (this.scanner.isRestrictedWord(name)) {\n\t options.stricted = param;\n\t options.message = messages_1.Messages.StrictParamName;\n\t }\n\t if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {\n\t options.stricted = param;\n\t options.message = messages_1.Messages.StrictParamDupe;\n\t }\n\t }\n\t else if (!options.firstRestricted) {\n\t if (this.scanner.isRestrictedWord(name)) {\n\t options.firstRestricted = param;\n\t options.message = messages_1.Messages.StrictParamName;\n\t }\n\t else if (this.scanner.isStrictModeReservedWord(name)) {\n\t options.firstRestricted = param;\n\t options.message = messages_1.Messages.StrictReservedWord;\n\t }\n\t else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {\n\t options.stricted = param;\n\t options.message = messages_1.Messages.StrictParamDupe;\n\t }\n\t }\n\t /* istanbul ignore next */\n\t if (typeof Object.defineProperty === 'function') {\n\t Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true });\n\t }\n\t else {\n\t options.paramSet[key] = true;\n\t }\n\t };\n\t Parser.prototype.parseRestElement = function (params) {\n\t var node = this.createNode();\n\t this.expect('...');\n\t var arg = this.parsePattern(params);\n\t if (this.match('=')) {\n\t this.throwError(messages_1.Messages.DefaultRestParameter);\n\t }\n\t if (!this.match(')')) {\n\t this.throwError(messages_1.Messages.ParameterAfterRestParameter);\n\t }\n\t return this.finalize(node, new Node.RestElement(arg));\n\t };\n\t Parser.prototype.parseFormalParameter = function (options) {\n\t var params = [];\n\t var param = this.match('...') ? this.parseRestElement(params) : this.parsePatternWithDefault(params);\n\t for (var i = 0; i < params.length; i++) {\n\t this.validateParam(options, params[i], params[i].value);\n\t }\n\t options.simple = options.simple && (param instanceof Node.Identifier);\n\t options.params.push(param);\n\t };\n\t Parser.prototype.parseFormalParameters = function (firstRestricted) {\n\t var options;\n\t options = {\n\t simple: true,\n\t params: [],\n\t firstRestricted: firstRestricted\n\t };\n\t this.expect('(');\n\t if (!this.match(')')) {\n\t options.paramSet = {};\n\t while (this.lookahead.type !== 2 /* EOF */) {\n\t this.parseFormalParameter(options);\n\t if (this.match(')')) {\n\t break;\n\t }\n\t this.expect(',');\n\t if (this.match(')')) {\n\t break;\n\t }\n\t }\n\t }\n\t this.expect(')');\n\t return {\n\t simple: options.simple,\n\t params: options.params,\n\t stricted: options.stricted,\n\t firstRestricted: options.firstRestricted,\n\t message: options.message\n\t };\n\t };\n\t Parser.prototype.matchAsyncFunction = function () {\n\t var match = this.matchContextualKeyword('async');\n\t if (match) {\n\t var state = this.scanner.saveState();\n\t this.scanner.scanComments();\n\t var next = this.scanner.lex();\n\t this.scanner.restoreState(state);\n\t match = (state.lineNumber === next.lineNumber) && (next.type === 4 /* Keyword */) && (next.value === 'function');\n\t }\n\t return match;\n\t };\n\t Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) {\n\t var node = this.createNode();\n\t var isAsync = this.matchContextualKeyword('async');\n\t if (isAsync) {\n\t this.nextToken();\n\t }\n\t this.expectKeyword('function');\n\t var isGenerator = isAsync ? false : this.match('*');\n\t if (isGenerator) {\n\t this.nextToken();\n\t }\n\t var message;\n\t var id = null;\n\t var firstRestricted = null;\n\t if (!identifierIsOptional || !this.match('(')) {\n\t var token = this.lookahead;\n\t id = this.parseVariableIdentifier();\n\t if (this.context.strict) {\n\t if (this.scanner.isRestrictedWord(token.value)) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);\n\t }\n\t }\n\t else {\n\t if (this.scanner.isRestrictedWord(token.value)) {\n\t firstRestricted = token;\n\t message = messages_1.Messages.StrictFunctionName;\n\t }\n\t else if (this.scanner.isStrictModeReservedWord(token.value)) {\n\t firstRestricted = token;\n\t message = messages_1.Messages.StrictReservedWord;\n\t }\n\t }\n\t }\n\t var previousAllowAwait = this.context.await;\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.await = isAsync;\n\t this.context.allowYield = !isGenerator;\n\t var formalParameters = this.parseFormalParameters(firstRestricted);\n\t var params = formalParameters.params;\n\t var stricted = formalParameters.stricted;\n\t firstRestricted = formalParameters.firstRestricted;\n\t if (formalParameters.message) {\n\t message = formalParameters.message;\n\t }\n\t var previousStrict = this.context.strict;\n\t var previousAllowStrictDirective = this.context.allowStrictDirective;\n\t this.context.allowStrictDirective = formalParameters.simple;\n\t var body = this.parseFunctionSourceElements();\n\t if (this.context.strict && firstRestricted) {\n\t this.throwUnexpectedToken(firstRestricted, message);\n\t }\n\t if (this.context.strict && stricted) {\n\t this.tolerateUnexpectedToken(stricted, message);\n\t }\n\t this.context.strict = previousStrict;\n\t this.context.allowStrictDirective = previousAllowStrictDirective;\n\t this.context.await = previousAllowAwait;\n\t this.context.allowYield = previousAllowYield;\n\t return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) :\n\t this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator));\n\t };\n\t Parser.prototype.parseFunctionExpression = function () {\n\t var node = this.createNode();\n\t var isAsync = this.matchContextualKeyword('async');\n\t if (isAsync) {\n\t this.nextToken();\n\t }\n\t this.expectKeyword('function');\n\t var isGenerator = isAsync ? false : this.match('*');\n\t if (isGenerator) {\n\t this.nextToken();\n\t }\n\t var message;\n\t var id = null;\n\t var firstRestricted;\n\t var previousAllowAwait = this.context.await;\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.await = isAsync;\n\t this.context.allowYield = !isGenerator;\n\t if (!this.match('(')) {\n\t var token = this.lookahead;\n\t id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier();\n\t if (this.context.strict) {\n\t if (this.scanner.isRestrictedWord(token.value)) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);\n\t }\n\t }\n\t else {\n\t if (this.scanner.isRestrictedWord(token.value)) {\n\t firstRestricted = token;\n\t message = messages_1.Messages.StrictFunctionName;\n\t }\n\t else if (this.scanner.isStrictModeReservedWord(token.value)) {\n\t firstRestricted = token;\n\t message = messages_1.Messages.StrictReservedWord;\n\t }\n\t }\n\t }\n\t var formalParameters = this.parseFormalParameters(firstRestricted);\n\t var params = formalParameters.params;\n\t var stricted = formalParameters.stricted;\n\t firstRestricted = formalParameters.firstRestricted;\n\t if (formalParameters.message) {\n\t message = formalParameters.message;\n\t }\n\t var previousStrict = this.context.strict;\n\t var previousAllowStrictDirective = this.context.allowStrictDirective;\n\t this.context.allowStrictDirective = formalParameters.simple;\n\t var body = this.parseFunctionSourceElements();\n\t if (this.context.strict && firstRestricted) {\n\t this.throwUnexpectedToken(firstRestricted, message);\n\t }\n\t if (this.context.strict && stricted) {\n\t this.tolerateUnexpectedToken(stricted, message);\n\t }\n\t this.context.strict = previousStrict;\n\t this.context.allowStrictDirective = previousAllowStrictDirective;\n\t this.context.await = previousAllowAwait;\n\t this.context.allowYield = previousAllowYield;\n\t return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) :\n\t this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-directive-prologues-and-the-use-strict-directive\n\t Parser.prototype.parseDirective = function () {\n\t var token = this.lookahead;\n\t var node = this.createNode();\n\t var expr = this.parseExpression();\n\t var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null;\n\t this.consumeSemicolon();\n\t return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr));\n\t };\n\t Parser.prototype.parseDirectivePrologues = function () {\n\t var firstRestricted = null;\n\t var body = [];\n\t while (true) {\n\t var token = this.lookahead;\n\t if (token.type !== 8 /* StringLiteral */) {\n\t break;\n\t }\n\t var statement = this.parseDirective();\n\t body.push(statement);\n\t var directive = statement.directive;\n\t if (typeof directive !== 'string') {\n\t break;\n\t }\n\t if (directive === 'use strict') {\n\t this.context.strict = true;\n\t if (firstRestricted) {\n\t this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral);\n\t }\n\t if (!this.context.allowStrictDirective) {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.IllegalLanguageModeDirective);\n\t }\n\t }\n\t else {\n\t if (!firstRestricted && token.octal) {\n\t firstRestricted = token;\n\t }\n\t }\n\t }\n\t return body;\n\t };\n\t // https://tc39.github.io/ecma262/#sec-method-definitions\n\t Parser.prototype.qualifiedPropertyName = function (token) {\n\t switch (token.type) {\n\t case 3 /* Identifier */:\n\t case 8 /* StringLiteral */:\n\t case 1 /* BooleanLiteral */:\n\t case 5 /* NullLiteral */:\n\t case 6 /* NumericLiteral */:\n\t case 4 /* Keyword */:\n\t return true;\n\t case 7 /* Punctuator */:\n\t return token.value === '[';\n\t default:\n\t break;\n\t }\n\t return false;\n\t };\n\t Parser.prototype.parseGetterMethod = function () {\n\t var node = this.createNode();\n\t var isGenerator = false;\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.allowYield = !isGenerator;\n\t var formalParameters = this.parseFormalParameters();\n\t if (formalParameters.params.length > 0) {\n\t this.tolerateError(messages_1.Messages.BadGetterArity);\n\t }\n\t var method = this.parsePropertyMethod(formalParameters);\n\t this.context.allowYield = previousAllowYield;\n\t return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator));\n\t };\n\t Parser.prototype.parseSetterMethod = function () {\n\t var node = this.createNode();\n\t var isGenerator = false;\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.allowYield = !isGenerator;\n\t var formalParameters = this.parseFormalParameters();\n\t if (formalParameters.params.length !== 1) {\n\t this.tolerateError(messages_1.Messages.BadSetterArity);\n\t }\n\t else if (formalParameters.params[0] instanceof Node.RestElement) {\n\t this.tolerateError(messages_1.Messages.BadSetterRestParameter);\n\t }\n\t var method = this.parsePropertyMethod(formalParameters);\n\t this.context.allowYield = previousAllowYield;\n\t return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator));\n\t };\n\t Parser.prototype.parseGeneratorMethod = function () {\n\t var node = this.createNode();\n\t var isGenerator = true;\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.allowYield = true;\n\t var params = this.parseFormalParameters();\n\t this.context.allowYield = false;\n\t var method = this.parsePropertyMethod(params);\n\t this.context.allowYield = previousAllowYield;\n\t return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-generator-function-definitions\n\t Parser.prototype.isStartOfExpression = function () {\n\t var start = true;\n\t var value = this.lookahead.value;\n\t switch (this.lookahead.type) {\n\t case 7 /* Punctuator */:\n\t start = (value === '[') || (value === '(') || (value === '{') ||\n\t (value === '+') || (value === '-') ||\n\t (value === '!') || (value === '~') ||\n\t (value === '++') || (value === '--') ||\n\t (value === '/') || (value === '/='); // regular expression literal\n\t break;\n\t case 4 /* Keyword */:\n\t start = (value === 'class') || (value === 'delete') ||\n\t (value === 'function') || (value === 'let') || (value === 'new') ||\n\t (value === 'super') || (value === 'this') || (value === 'typeof') ||\n\t (value === 'void') || (value === 'yield');\n\t break;\n\t default:\n\t break;\n\t }\n\t return start;\n\t };\n\t Parser.prototype.parseYieldExpression = function () {\n\t var node = this.createNode();\n\t this.expectKeyword('yield');\n\t var argument = null;\n\t var delegate = false;\n\t if (!this.hasLineTerminator) {\n\t var previousAllowYield = this.context.allowYield;\n\t this.context.allowYield = false;\n\t delegate = this.match('*');\n\t if (delegate) {\n\t this.nextToken();\n\t argument = this.parseAssignmentExpression();\n\t }\n\t else if (this.isStartOfExpression()) {\n\t argument = this.parseAssignmentExpression();\n\t }\n\t this.context.allowYield = previousAllowYield;\n\t }\n\t return this.finalize(node, new Node.YieldExpression(argument, delegate));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-class-definitions\n\t Parser.prototype.parseClassElement = function (hasConstructor) {\n\t var token = this.lookahead;\n\t var node = this.createNode();\n\t var kind = '';\n\t var key = null;\n\t var value = null;\n\t var computed = false;\n\t var method = false;\n\t var isStatic = false;\n\t var isAsync = false;\n\t if (this.match('*')) {\n\t this.nextToken();\n\t }\n\t else {\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t var id = key;\n\t if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) {\n\t token = this.lookahead;\n\t isStatic = true;\n\t computed = this.match('[');\n\t if (this.match('*')) {\n\t this.nextToken();\n\t }\n\t else {\n\t key = this.parseObjectPropertyKey();\n\t }\n\t }\n\t if ((token.type === 3 /* Identifier */) && !this.hasLineTerminator && (token.value === 'async')) {\n\t var punctuator = this.lookahead.value;\n\t if (punctuator !== ':' && punctuator !== '(' && punctuator !== '*') {\n\t isAsync = true;\n\t token = this.lookahead;\n\t key = this.parseObjectPropertyKey();\n\t if (token.type === 3 /* Identifier */ && token.value === 'constructor') {\n\t this.tolerateUnexpectedToken(token, messages_1.Messages.ConstructorIsAsync);\n\t }\n\t }\n\t }\n\t }\n\t var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);\n\t if (token.type === 3 /* Identifier */) {\n\t if (token.value === 'get' && lookaheadPropertyKey) {\n\t kind = 'get';\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t this.context.allowYield = false;\n\t value = this.parseGetterMethod();\n\t }\n\t else if (token.value === 'set' && lookaheadPropertyKey) {\n\t kind = 'set';\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t value = this.parseSetterMethod();\n\t }\n\t }\n\t else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) {\n\t kind = 'init';\n\t computed = this.match('[');\n\t key = this.parseObjectPropertyKey();\n\t value = this.parseGeneratorMethod();\n\t method = true;\n\t }\n\t if (!kind && key && this.match('(')) {\n\t kind = 'init';\n\t value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();\n\t method = true;\n\t }\n\t if (!kind) {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t if (kind === 'init') {\n\t kind = 'method';\n\t }\n\t if (!computed) {\n\t if (isStatic && this.isPropertyKey(key, 'prototype')) {\n\t this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype);\n\t }\n\t if (!isStatic && this.isPropertyKey(key, 'constructor')) {\n\t if (kind !== 'method' || !method || (value && value.generator)) {\n\t this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod);\n\t }\n\t if (hasConstructor.value) {\n\t this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor);\n\t }\n\t else {\n\t hasConstructor.value = true;\n\t }\n\t kind = 'constructor';\n\t }\n\t }\n\t return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic));\n\t };\n\t Parser.prototype.parseClassElementList = function () {\n\t var body = [];\n\t var hasConstructor = { value: false };\n\t this.expect('{');\n\t while (!this.match('}')) {\n\t if (this.match(';')) {\n\t this.nextToken();\n\t }\n\t else {\n\t body.push(this.parseClassElement(hasConstructor));\n\t }\n\t }\n\t this.expect('}');\n\t return body;\n\t };\n\t Parser.prototype.parseClassBody = function () {\n\t var node = this.createNode();\n\t var elementList = this.parseClassElementList();\n\t return this.finalize(node, new Node.ClassBody(elementList));\n\t };\n\t Parser.prototype.parseClassDeclaration = function (identifierIsOptional) {\n\t var node = this.createNode();\n\t var previousStrict = this.context.strict;\n\t this.context.strict = true;\n\t this.expectKeyword('class');\n\t var id = (identifierIsOptional && (this.lookahead.type !== 3 /* Identifier */)) ? null : this.parseVariableIdentifier();\n\t var superClass = null;\n\t if (this.matchKeyword('extends')) {\n\t this.nextToken();\n\t superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);\n\t }\n\t var classBody = this.parseClassBody();\n\t this.context.strict = previousStrict;\n\t return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody));\n\t };\n\t Parser.prototype.parseClassExpression = function () {\n\t var node = this.createNode();\n\t var previousStrict = this.context.strict;\n\t this.context.strict = true;\n\t this.expectKeyword('class');\n\t var id = (this.lookahead.type === 3 /* Identifier */) ? this.parseVariableIdentifier() : null;\n\t var superClass = null;\n\t if (this.matchKeyword('extends')) {\n\t this.nextToken();\n\t superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);\n\t }\n\t var classBody = this.parseClassBody();\n\t this.context.strict = previousStrict;\n\t return this.finalize(node, new Node.ClassExpression(id, superClass, classBody));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-scripts\n\t // https://tc39.github.io/ecma262/#sec-modules\n\t Parser.prototype.parseModule = function () {\n\t this.context.strict = true;\n\t this.context.isModule = true;\n\t this.scanner.isModule = true;\n\t var node = this.createNode();\n\t var body = this.parseDirectivePrologues();\n\t while (this.lookahead.type !== 2 /* EOF */) {\n\t body.push(this.parseStatementListItem());\n\t }\n\t return this.finalize(node, new Node.Module(body));\n\t };\n\t Parser.prototype.parseScript = function () {\n\t var node = this.createNode();\n\t var body = this.parseDirectivePrologues();\n\t while (this.lookahead.type !== 2 /* EOF */) {\n\t body.push(this.parseStatementListItem());\n\t }\n\t return this.finalize(node, new Node.Script(body));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-imports\n\t Parser.prototype.parseModuleSpecifier = function () {\n\t var node = this.createNode();\n\t if (this.lookahead.type !== 8 /* StringLiteral */) {\n\t this.throwError(messages_1.Messages.InvalidModuleSpecifier);\n\t }\n\t var token = this.nextToken();\n\t var raw = this.getTokenRaw(token);\n\t return this.finalize(node, new Node.Literal(token.value, raw));\n\t };\n\t // import {} ...;\n\t Parser.prototype.parseImportSpecifier = function () {\n\t var node = this.createNode();\n\t var imported;\n\t var local;\n\t if (this.lookahead.type === 3 /* Identifier */) {\n\t imported = this.parseVariableIdentifier();\n\t local = imported;\n\t if (this.matchContextualKeyword('as')) {\n\t this.nextToken();\n\t local = this.parseVariableIdentifier();\n\t }\n\t }\n\t else {\n\t imported = this.parseIdentifierName();\n\t local = imported;\n\t if (this.matchContextualKeyword('as')) {\n\t this.nextToken();\n\t local = this.parseVariableIdentifier();\n\t }\n\t else {\n\t this.throwUnexpectedToken(this.nextToken());\n\t }\n\t }\n\t return this.finalize(node, new Node.ImportSpecifier(local, imported));\n\t };\n\t // {foo, bar as bas}\n\t Parser.prototype.parseNamedImports = function () {\n\t this.expect('{');\n\t var specifiers = [];\n\t while (!this.match('}')) {\n\t specifiers.push(this.parseImportSpecifier());\n\t if (!this.match('}')) {\n\t this.expect(',');\n\t }\n\t }\n\t this.expect('}');\n\t return specifiers;\n\t };\n\t // import ...;\n\t Parser.prototype.parseImportDefaultSpecifier = function () {\n\t var node = this.createNode();\n\t var local = this.parseIdentifierName();\n\t return this.finalize(node, new Node.ImportDefaultSpecifier(local));\n\t };\n\t // import <* as foo> ...;\n\t Parser.prototype.parseImportNamespaceSpecifier = function () {\n\t var node = this.createNode();\n\t this.expect('*');\n\t if (!this.matchContextualKeyword('as')) {\n\t this.throwError(messages_1.Messages.NoAsAfterImportNamespace);\n\t }\n\t this.nextToken();\n\t var local = this.parseIdentifierName();\n\t return this.finalize(node, new Node.ImportNamespaceSpecifier(local));\n\t };\n\t Parser.prototype.parseImportDeclaration = function () {\n\t if (this.context.inFunctionBody) {\n\t this.throwError(messages_1.Messages.IllegalImportDeclaration);\n\t }\n\t var node = this.createNode();\n\t this.expectKeyword('import');\n\t var src;\n\t var specifiers = [];\n\t if (this.lookahead.type === 8 /* StringLiteral */) {\n\t // import 'foo';\n\t src = this.parseModuleSpecifier();\n\t }\n\t else {\n\t if (this.match('{')) {\n\t // import {bar}\n\t specifiers = specifiers.concat(this.parseNamedImports());\n\t }\n\t else if (this.match('*')) {\n\t // import * as foo\n\t specifiers.push(this.parseImportNamespaceSpecifier());\n\t }\n\t else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) {\n\t // import foo\n\t specifiers.push(this.parseImportDefaultSpecifier());\n\t if (this.match(',')) {\n\t this.nextToken();\n\t if (this.match('*')) {\n\t // import foo, * as foo\n\t specifiers.push(this.parseImportNamespaceSpecifier());\n\t }\n\t else if (this.match('{')) {\n\t // import foo, {bar}\n\t specifiers = specifiers.concat(this.parseNamedImports());\n\t }\n\t else {\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t }\n\t }\n\t else {\n\t this.throwUnexpectedToken(this.nextToken());\n\t }\n\t if (!this.matchContextualKeyword('from')) {\n\t var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;\n\t this.throwError(message, this.lookahead.value);\n\t }\n\t this.nextToken();\n\t src = this.parseModuleSpecifier();\n\t }\n\t this.consumeSemicolon();\n\t return this.finalize(node, new Node.ImportDeclaration(specifiers, src));\n\t };\n\t // https://tc39.github.io/ecma262/#sec-exports\n\t Parser.prototype.parseExportSpecifier = function () {\n\t var node = this.createNode();\n\t var local = this.parseIdentifierName();\n\t var exported = local;\n\t if (this.matchContextualKeyword('as')) {\n\t this.nextToken();\n\t exported = this.parseIdentifierName();\n\t }\n\t return this.finalize(node, new Node.ExportSpecifier(local, exported));\n\t };\n\t Parser.prototype.parseExportDeclaration = function () {\n\t if (this.context.inFunctionBody) {\n\t this.throwError(messages_1.Messages.IllegalExportDeclaration);\n\t }\n\t var node = this.createNode();\n\t this.expectKeyword('export');\n\t var exportDeclaration;\n\t if (this.matchKeyword('default')) {\n\t // export default ...\n\t this.nextToken();\n\t if (this.matchKeyword('function')) {\n\t // export default function foo () {}\n\t // export default function () {}\n\t var declaration = this.parseFunctionDeclaration(true);\n\t exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));\n\t }\n\t else if (this.matchKeyword('class')) {\n\t // export default class foo {}\n\t var declaration = this.parseClassDeclaration(true);\n\t exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));\n\t }\n\t else if (this.matchContextualKeyword('async')) {\n\t // export default async function f () {}\n\t // export default async function () {}\n\t // export default async x => x\n\t var declaration = this.matchAsyncFunction() ? this.parseFunctionDeclaration(true) : this.parseAssignmentExpression();\n\t exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));\n\t }\n\t else {\n\t if (this.matchContextualKeyword('from')) {\n\t this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value);\n\t }\n\t // export default {};\n\t // export default [];\n\t // export default (1 + 2);\n\t var declaration = this.match('{') ? this.parseObjectInitializer() :\n\t this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression();\n\t this.consumeSemicolon();\n\t exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));\n\t }\n\t }\n\t else if (this.match('*')) {\n\t // export * from 'foo';\n\t this.nextToken();\n\t if (!this.matchContextualKeyword('from')) {\n\t var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;\n\t this.throwError(message, this.lookahead.value);\n\t }\n\t this.nextToken();\n\t var src = this.parseModuleSpecifier();\n\t this.consumeSemicolon();\n\t exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src));\n\t }\n\t else if (this.lookahead.type === 4 /* Keyword */) {\n\t // export var f = 1;\n\t var declaration = void 0;\n\t switch (this.lookahead.value) {\n\t case 'let':\n\t case 'const':\n\t declaration = this.parseLexicalDeclaration({ inFor: false });\n\t break;\n\t case 'var':\n\t case 'class':\n\t case 'function':\n\t declaration = this.parseStatementListItem();\n\t break;\n\t default:\n\t this.throwUnexpectedToken(this.lookahead);\n\t }\n\t exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));\n\t }\n\t else if (this.matchAsyncFunction()) {\n\t var declaration = this.parseFunctionDeclaration();\n\t exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));\n\t }\n\t else {\n\t var specifiers = [];\n\t var source = null;\n\t var isExportFromIdentifier = false;\n\t this.expect('{');\n\t while (!this.match('}')) {\n\t isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default');\n\t specifiers.push(this.parseExportSpecifier());\n\t if (!this.match('}')) {\n\t this.expect(',');\n\t }\n\t }\n\t this.expect('}');\n\t if (this.matchContextualKeyword('from')) {\n\t // export {default} from 'foo';\n\t // export {foo} from 'foo';\n\t this.nextToken();\n\t source = this.parseModuleSpecifier();\n\t this.consumeSemicolon();\n\t }\n\t else if (isExportFromIdentifier) {\n\t // export {default}; // missing fromClause\n\t var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;\n\t this.throwError(message, this.lookahead.value);\n\t }\n\t else {\n\t // export {foo};\n\t this.consumeSemicolon();\n\t }\n\t exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source));\n\t }\n\t return exportDeclaration;\n\t };\n\t return Parser;\n\t}());\n\texports.Parser = Parser;\n\n\n/***/ },\n/* 9 */\n/***/ function(module, exports) {\n\n\t\"use strict\";\n\t// Ensure the condition is true, otherwise throw an error.\n\t// This is only to have a better contract semantic, i.e. another safety net\n\t// to catch a logic error. The condition shall be fulfilled in normal case.\n\t// Do NOT use this to enforce a certain condition on any user input.\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tfunction assert(condition, message) {\n\t /* istanbul ignore if */\n\t if (!condition) {\n\t throw new Error('ASSERT: ' + message);\n\t }\n\t}\n\texports.assert = assert;\n\n\n/***/ },\n/* 10 */\n/***/ function(module, exports) {\n\n\t\"use strict\";\n\t/* tslint:disable:max-classes-per-file */\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar ErrorHandler = (function () {\n\t function ErrorHandler() {\n\t this.errors = [];\n\t this.tolerant = false;\n\t }\n\t ErrorHandler.prototype.recordError = function (error) {\n\t this.errors.push(error);\n\t };\n\t ErrorHandler.prototype.tolerate = function (error) {\n\t if (this.tolerant) {\n\t this.recordError(error);\n\t }\n\t else {\n\t throw error;\n\t }\n\t };\n\t ErrorHandler.prototype.constructError = function (msg, column) {\n\t var error = new Error(msg);\n\t try {\n\t throw error;\n\t }\n\t catch (base) {\n\t /* istanbul ignore else */\n\t if (Object.create && Object.defineProperty) {\n\t error = Object.create(base);\n\t Object.defineProperty(error, 'column', { value: column });\n\t }\n\t }\n\t /* istanbul ignore next */\n\t return error;\n\t };\n\t ErrorHandler.prototype.createError = function (index, line, col, description) {\n\t var msg = 'Line ' + line + ': ' + description;\n\t var error = this.constructError(msg, col);\n\t error.index = index;\n\t error.lineNumber = line;\n\t error.description = description;\n\t return error;\n\t };\n\t ErrorHandler.prototype.throwError = function (index, line, col, description) {\n\t throw this.createError(index, line, col, description);\n\t };\n\t ErrorHandler.prototype.tolerateError = function (index, line, col, description) {\n\t var error = this.createError(index, line, col, description);\n\t if (this.tolerant) {\n\t this.recordError(error);\n\t }\n\t else {\n\t throw error;\n\t }\n\t };\n\t return ErrorHandler;\n\t}());\n\texports.ErrorHandler = ErrorHandler;\n\n\n/***/ },\n/* 11 */\n/***/ function(module, exports) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\t// Error messages should be identical to V8.\n\texports.Messages = {\n\t BadGetterArity: 'Getter must not have any formal parameters',\n\t BadSetterArity: 'Setter must have exactly one formal parameter',\n\t BadSetterRestParameter: 'Setter function argument must not be a rest parameter',\n\t ConstructorIsAsync: 'Class constructor may not be an async method',\n\t ConstructorSpecialMethod: 'Class constructor may not be an accessor',\n\t DeclarationMissingInitializer: 'Missing initializer in %0 declaration',\n\t DefaultRestParameter: 'Unexpected token =',\n\t DuplicateBinding: 'Duplicate binding %0',\n\t DuplicateConstructor: 'A class may only have one constructor',\n\t DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',\n\t ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer',\n\t GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts',\n\t IllegalBreak: 'Illegal break statement',\n\t IllegalContinue: 'Illegal continue statement',\n\t IllegalExportDeclaration: 'Unexpected token',\n\t IllegalImportDeclaration: 'Unexpected token',\n\t IllegalLanguageModeDirective: 'Illegal \\'use strict\\' directive in function with non-simple parameter list',\n\t IllegalReturn: 'Illegal return statement',\n\t InvalidEscapedReservedWord: 'Keyword must not contain escaped characters',\n\t InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence',\n\t InvalidLHSInAssignment: 'Invalid left-hand side in assignment',\n\t InvalidLHSInForIn: 'Invalid left-hand side in for-in',\n\t InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',\n\t InvalidModuleSpecifier: 'Unexpected token',\n\t InvalidRegExp: 'Invalid regular expression',\n\t LetInLexicalBinding: 'let is disallowed as a lexically bound name',\n\t MissingFromClause: 'Unexpected token',\n\t MultipleDefaultsInSwitch: 'More than one default clause in switch statement',\n\t NewlineAfterThrow: 'Illegal newline after throw',\n\t NoAsAfterImportNamespace: 'Unexpected token',\n\t NoCatchOrFinally: 'Missing catch or finally after try',\n\t ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',\n\t Redeclaration: '%0 \\'%1\\' has already been declared',\n\t StaticPrototype: 'Classes may not have static property named prototype',\n\t StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',\n\t StrictDelete: 'Delete of an unqualified identifier in strict mode.',\n\t StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block',\n\t StrictFunctionName: 'Function name may not be eval or arguments in strict mode',\n\t StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',\n\t StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',\n\t StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',\n\t StrictModeWith: 'Strict mode code may not include a with statement',\n\t StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',\n\t StrictParamDupe: 'Strict mode function may not have duplicate parameter names',\n\t StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',\n\t StrictReservedWord: 'Use of future reserved word in strict mode',\n\t StrictVarName: 'Variable name may not be eval or arguments in strict mode',\n\t TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',\n\t UnexpectedEOS: 'Unexpected end of input',\n\t UnexpectedIdentifier: 'Unexpected identifier',\n\t UnexpectedNumber: 'Unexpected number',\n\t UnexpectedReserved: 'Unexpected reserved word',\n\t UnexpectedString: 'Unexpected string',\n\t UnexpectedTemplate: 'Unexpected quasi %0',\n\t UnexpectedToken: 'Unexpected token %0',\n\t UnexpectedTokenIllegal: 'Unexpected token ILLEGAL',\n\t UnknownLabel: 'Undefined label \\'%0\\'',\n\t UnterminatedRegExp: 'Invalid regular expression: missing /'\n\t};\n\n\n/***/ },\n/* 12 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t\"use strict\";\n\tObject.defineProperty(exports, \"__esModule\", { value: true });\n\tvar assert_1 = __webpack_require__(9);\n\tvar character_1 = __webpack_require__(4);\n\tvar messages_1 = __webpack_require__(11);\n\tfunction hexValue(ch) {\n\t return '0123456789abcdef'.indexOf(ch.toLowerCase());\n\t}\n\tfunction octalValue(ch) {\n\t return '01234567'.indexOf(ch);\n\t}\n\tvar Scanner = (function () {\n\t function Scanner(code, handler) {\n\t this.source = code;\n\t this.errorHandler = handler;\n\t this.trackComment = false;\n\t this.isModule = false;\n\t this.length = code.length;\n\t this.index = 0;\n\t this.lineNumber = (code.length > 0) ? 1 : 0;\n\t this.lineStart = 0;\n\t this.curlyStack = [];\n\t }\n\t Scanner.prototype.saveState = function () {\n\t return {\n\t index: this.index,\n\t lineNumber: this.lineNumber,\n\t lineStart: this.lineStart\n\t };\n\t };\n\t Scanner.prototype.restoreState = function (state) {\n\t this.index = state.index;\n\t this.lineNumber = state.lineNumber;\n\t this.lineStart = state.lineStart;\n\t };\n\t Scanner.prototype.eof = function () {\n\t return this.index >= this.length;\n\t };\n\t Scanner.prototype.throwUnexpectedToken = function (message) {\n\t if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }\n\t return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);\n\t };\n\t Scanner.prototype.tolerateUnexpectedToken = function (message) {\n\t if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }\n\t this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);\n\t };\n\t // https://tc39.github.io/ecma262/#sec-comments\n\t Scanner.prototype.skipSingleLineComment = function (offset) {\n\t var comments = [];\n\t var start, loc;\n\t if (this.trackComment) {\n\t comments = [];\n\t start = this.index - offset;\n\t loc = {\n\t start: {\n\t line: this.lineNumber,\n\t column: this.index - this.lineStart - offset\n\t },\n\t end: {}\n\t };\n\t }\n\t while (!this.eof()) {\n\t var ch = this.source.charCodeAt(this.index);\n\t ++this.index;\n\t if (character_1.Character.isLineTerminator(ch)) {\n\t if (this.trackComment) {\n\t loc.end = {\n\t line: this.lineNumber,\n\t column: this.index - this.lineStart - 1\n\t };\n\t var entry = {\n\t multiLine: false,\n\t slice: [start + offset, this.index - 1],\n\t range: [start, this.index - 1],\n\t loc: loc\n\t };\n\t comments.push(entry);\n\t }\n\t if (ch === 13 && this.source.charCodeAt(this.index) === 10) {\n\t ++this.index;\n\t }\n\t ++this.lineNumber;\n\t this.lineStart = this.index;\n\t return comments;\n\t }\n\t }\n\t if (this.trackComment) {\n\t loc.end = {\n\t line: this.lineNumber,\n\t column: this.index - this.lineStart\n\t };\n\t var entry = {\n\t multiLine: false,\n\t slice: [start + offset, this.index],\n\t range: [start, this.index],\n\t loc: loc\n\t };\n\t comments.push(entry);\n\t }\n\t return comments;\n\t };\n\t Scanner.prototype.skipMultiLineComment = function () {\n\t var comments = [];\n\t var start, loc;\n\t if (this.trackComment) {\n\t comments = [];\n\t start = this.index - 2;\n\t loc = {\n\t start: {\n\t line: this.lineNumber,\n\t column: this.index - this.lineStart - 2\n\t },\n\t end: {}\n\t };\n\t }\n\t while (!this.eof()) {\n\t var ch = this.source.charCodeAt(this.index);\n\t if (character_1.Character.isLineTerminator(ch)) {\n\t if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) {\n\t ++this.index;\n\t }\n\t ++this.lineNumber;\n\t ++this.index;\n\t this.lineStart = this.index;\n\t }\n\t else if (ch === 0x2A) {\n\t // Block comment ends with '*/'.\n\t if (this.source.charCodeAt(this.index + 1) === 0x2F) {\n\t this.index += 2;\n\t if (this.trackComment) {\n\t loc.end = {\n\t line: this.lineNumber,\n\t column: this.index - this.lineStart\n\t };\n\t var entry = {\n\t multiLine: true,\n\t slice: [start + 2, this.index - 2],\n\t range: [start, this.index],\n\t loc: loc\n\t };\n\t comments.push(entry);\n\t }\n\t return comments;\n\t }\n\t ++this.index;\n\t }\n\t else {\n\t ++this.index;\n\t }\n\t }\n\t // Ran off the end of the file - the whole thing is a comment\n\t if (this.trackComment) {\n\t loc.end = {\n\t line: this.lineNumber,\n\t column: this.index - this.lineStart\n\t };\n\t var entry = {\n\t multiLine: true,\n\t slice: [start + 2, this.index],\n\t range: [start, this.index],\n\t loc: loc\n\t };\n\t comments.push(entry);\n\t }\n\t this.tolerateUnexpectedToken();\n\t return comments;\n\t };\n\t Scanner.prototype.scanComments = function () {\n\t var comments;\n\t if (this.trackComment) {\n\t comments = [];\n\t }\n\t var start = (this.index === 0);\n\t while (!this.eof()) {\n\t var ch = this.source.charCodeAt(this.index);\n\t if (character_1.Character.isWhiteSpace(ch)) {\n\t ++this.index;\n\t }\n\t else if (character_1.Character.isLineTerminator(ch)) {\n\t ++this.index;\n\t if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) {\n\t ++this.index;\n\t }\n\t ++this.lineNumber;\n\t this.lineStart = this.index;\n\t start = true;\n\t }\n\t else if (ch === 0x2F) {\n\t ch = this.source.charCodeAt(this.index + 1);\n\t if (ch === 0x2F) {\n\t this.index += 2;\n\t var comment = this.skipSingleLineComment(2);\n\t if (this.trackComment) {\n\t comments = comments.concat(comment);\n\t }\n\t start = true;\n\t }\n\t else if (ch === 0x2A) {\n\t this.index += 2;\n\t var comment = this.skipMultiLineComment();\n\t if (this.trackComment) {\n\t comments = comments.concat(comment);\n\t }\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t else if (start && ch === 0x2D) {\n\t // U+003E is '>'\n\t if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) {\n\t // '-->' is a single-line comment\n\t this.index += 3;\n\t var comment = this.skipSingleLineComment(3);\n\t if (this.trackComment) {\n\t comments = comments.concat(comment);\n\t }\n\t }\n\t else {\n\t break;\n\t }\n\t }\n\t else if (ch === 0x3C && !this.isModule) {\n\t if (this.source.slice(this.index + 1, this.index + 4) === '!--') {\n\t this.index += 4; // `\n \n \n \n \n \n \n \n \n \n`,\n\n is: 'paper-dropdown-menu',\n\n behaviors: [\n IronButtonState,\n IronControlState,\n IronFormElementBehavior,\n IronValidatableBehavior\n ],\n\n properties: {\n /**\n * The derived \"label\" of the currently selected item. This value\n * is the `label` property on the selected item if set, or else the\n * trimmed text content of the selected item.\n */\n selectedItemLabel: {type: String, notify: true, readOnly: true},\n\n /**\n * The last selected item. An item is selected if the dropdown menu has\n * a child with slot `dropdown-content`, and that child triggers an\n * `iron-select` event with the selected `item` in the `detail`.\n *\n * @type {?Object}\n */\n selectedItem: {type: Object, notify: true, readOnly: true},\n\n /**\n * The value for this element that will be used when submitting in\n * a form. It reflects the value of `selectedItemLabel`. If set directly,\n * it will not update the `selectedItemLabel` value.\n */\n value: {\n type: String,\n notify: true,\n },\n\n /**\n * The label for the dropdown.\n */\n label: {type: String},\n\n /**\n * The placeholder for the dropdown.\n */\n placeholder: {type: String},\n\n /**\n * The error message to display when invalid.\n */\n errorMessage: {type: String},\n\n /**\n * True if the dropdown is open. Otherwise, false.\n */\n opened:\n {type: Boolean, notify: true, value: false, observer: '_openedChanged'},\n\n /**\n * By default, the dropdown will constrain scrolling on the page\n * to itself when opened.\n * Set to true in order to prevent scroll from being constrained\n * to the dropdown when it opens.\n */\n allowOutsideScroll: {type: Boolean, value: false},\n\n /**\n * Set to true to disable the floating label. Bind this to the\n * ``'s `noLabelFloat` property.\n */\n noLabelFloat: {type: Boolean, value: false, reflectToAttribute: true},\n\n /**\n * Set to true to always float the label. Bind this to the\n * ``'s `alwaysFloatLabel` property.\n */\n alwaysFloatLabel: {type: Boolean, value: false},\n\n /**\n * Set to true to disable animations when opening and closing the\n * dropdown.\n */\n noAnimations: {type: Boolean, value: false},\n\n /**\n * The orientation against which to align the menu dropdown\n * horizontally relative to the dropdown trigger.\n */\n horizontalAlign: {type: String, value: 'right'},\n\n /**\n * The orientation against which to align the menu dropdown\n * vertically relative to the dropdown trigger.\n */\n verticalAlign: {type: String, value: 'top'},\n\n /**\n * Overrides the vertical offset computed in\n * _computeMenuVerticalOffset.\n */\n verticalOffset: Number,\n\n /**\n * If true, the `horizontalAlign` and `verticalAlign` properties will\n * be considered preferences instead of strict requirements when\n * positioning the dropdown and may be changed if doing so reduces\n * the area of the dropdown falling outside of `fitInto`.\n */\n dynamicAlign: {type: Boolean},\n\n /**\n * Whether focus should be restored to the dropdown when the menu closes.\n */\n restoreFocusOnClose: {type: Boolean, value: true},\n },\n\n listeners: {'tap': '_onTap'},\n\n /**\n * @type {!Object}\n */\n keyBindings: {'up down': 'open', 'esc': 'close'},\n\n hostAttributes:\n {role: 'combobox', 'aria-autocomplete': 'none', 'aria-haspopup': 'true'},\n\n observers: ['_selectedItemChanged(selectedItem)'],\n\n attached: function() {\n // NOTE(cdata): Due to timing, a preselected value in a `IronSelectable`\n // child will cause an `iron-select` event to fire while the element is\n // still in a `DocumentFragment`. This has the effect of causing\n // handlers not to fire. So, we double check this value on attached:\n var contentElement = this.contentElement;\n if (contentElement && contentElement.selectedItem) {\n this._setSelectedItem(contentElement.selectedItem);\n }\n },\n\n /**\n * The content element that is contained by the dropdown menu, if any.\n */\n get contentElement() {\n // Polymer 2.x returns slot.assignedNodes which can contain text nodes.\n var nodes = dom(this.$.content).getDistributedNodes();\n for (var i = 0, l = nodes.length; i < l; i++) {\n if (nodes[i].nodeType === Node.ELEMENT_NODE) {\n return nodes[i];\n }\n }\n },\n\n /**\n * Show the dropdown content.\n */\n open: function() {\n this.$.menuButton.open();\n },\n\n /**\n * Hide the dropdown content.\n */\n close: function() {\n this.$.menuButton.close();\n },\n\n /**\n * A handler that is called when `iron-select` is fired.\n *\n * @param {CustomEvent} event An `iron-select` event.\n */\n _onIronSelect: function(event) {\n this._setSelectedItem(event.detail.item);\n },\n\n /**\n * A handler that is called when `iron-deselect` is fired.\n *\n * @param {CustomEvent} event An `iron-deselect` event.\n */\n _onIronDeselect: function(event) {\n this._setSelectedItem(null);\n },\n\n /**\n * A handler that is called when the dropdown is tapped.\n *\n * @param {CustomEvent} event A tap event.\n */\n _onTap: function(event) {\n if (gestures.findOriginalTarget(event) === this) {\n this.open();\n }\n },\n\n /**\n * Compute the label for the dropdown given a selected item.\n *\n * @param {Element} selectedItem A selected Element item, with an\n * optional `label` property.\n */\n _selectedItemChanged: function(selectedItem) {\n var value = '';\n if (!selectedItem) {\n value = '';\n } else {\n value = selectedItem.label || selectedItem.getAttribute('label') ||\n selectedItem.textContent.trim();\n }\n\n this.value = value;\n this._setSelectedItemLabel(value);\n },\n\n /**\n * Compute the vertical offset of the menu based on the value of\n * `noLabelFloat`.\n *\n * @param {boolean} noLabelFloat True if the label should not float\n * @param {number=} opt_verticalOffset Optional offset from the user\n * above the input, otherwise false.\n */\n _computeMenuVerticalOffset: function(noLabelFloat, opt_verticalOffset) {\n // Override offset if it's passed from the user.\n if (opt_verticalOffset) {\n return opt_verticalOffset;\n }\n\n // NOTE(cdata): These numbers are somewhat magical because they are\n // derived from the metrics of elements internal to `paper-input`'s\n // template. The metrics will change depending on whether or not the\n // input has a floating label.\n return noLabelFloat ? -4 : 8;\n },\n\n /**\n * Returns false if the element is required and does not have a selection,\n * and true otherwise.\n * @param {*=} _value Ignored.\n * @return {boolean} true if `required` is false, or if `required` is true\n * and the element has a valid selection.\n */\n _getValidity: function(_value) {\n return this.disabled || !this.required || (this.required && !!this.value);\n },\n\n _openedChanged: function() {\n var openState = this.opened ? 'true' : 'false';\n var e = this.contentElement;\n if (e) {\n e.setAttribute('aria-expanded', openState);\n }\n }\n});\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/iron-flex-layout/iron-flex-layout.js';\nimport '@polymer/paper-styles/color.js';\nimport '@polymer/paper-styles/default-theme.js';\nimport '@polymer/paper-styles/typography.js';\nconst $_documentContainer = document.createElement('template');\n$_documentContainer.setAttribute('style', 'display: none;');\n\n$_documentContainer.innerHTML = `\n \n \n \n `;\n\ndocument.head.appendChild($_documentContainer.content);\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\n\nimport {IronButtonState} from '@polymer/iron-behaviors/iron-button-state.js';\nimport {IronControlState} from '@polymer/iron-behaviors/iron-control-state.js';\n\n/*\n`PaperItemBehavior` is a convenience behavior shared by and\n that manages the shared control states and attributes of\nthe items.\n*/\n/** @polymerBehavior PaperItemBehavior */\nexport const PaperItemBehaviorImpl = {\n hostAttributes: {role: 'option', tabindex: '0'}\n};\n\n/** @polymerBehavior */\nexport const PaperItemBehavior =\n [IronButtonState, IronControlState, PaperItemBehaviorImpl];\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\nimport '@polymer/iron-flex-layout/iron-flex-layout.js';\nimport './paper-item-shared-styles.js';\n\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\nimport {html} from '@polymer/polymer/lib/utils/html-tag.js';\n\nimport {PaperItemBehavior} from './paper-item-behavior.js';\n\n/**\nMaterial design:\n[Lists](https://www.google.com/design/spec/components/lists.html)\n\n`` is an interactive list item. By default, it is a horizontal\nflexbox.\n\n Item \n\nUse this element with `` to make Material Design styled\ntwo-line and three-line items.\n\n \n \n Show your status\n Your status is visible to everyone\n \n \n\nTo use `paper-item` as a link, wrap it in an anchor tag. Since `paper-item` will\nalready receive focus, you may want to prevent the anchor tag from receiving\nfocus as well by setting its tabindex to -1.\n\n \n Polymer Project \n \n\nIf you are concerned about performance and want to use `paper-item` in a\n`paper-listbox` with many items, you can just use a native `button` with the\n`paper-item` class applied (provided you have correctly included the shared\nstyles):\n\n \n\n \n \n \n \n \n\n### Styling\n\nThe following custom properties and mixins are available for styling:\n\nCustom property | Description | Default\n----------------|-------------|----------\n`--paper-item-min-height` | Minimum height of the item | `48px`\n`--paper-item` | Mixin applied to the item | `{}`\n`--paper-item-selected-weight` | The font weight of a selected item | `bold`\n`--paper-item-selected` | Mixin applied to selected paper-items | `{}`\n`--paper-item-disabled-color` | The color for disabled paper-items | `--disabled-text-color`\n`--paper-item-disabled` | Mixin applied to disabled paper-items | `{}`\n`--paper-item-focused` | Mixin applied to focused paper-items | `{}`\n`--paper-item-focused-before` | Mixin applied to :before focused paper-items | `{}`\n\n### Accessibility\n\nThis element has `role=\"listitem\"` by default. Depending on usage, it may be\nmore appropriate to set `role=\"menuitem\"`, `role=\"menuitemcheckbox\"` or\n`role=\"menuitemradio\"`.\n\n \n \n Show your status\n \n \n\n@group Paper Elements\n@element paper-item\n@demo demo/index.html\n*/\nPolymer({\n _template: html`\n \n can only be templatized once");t.__templatizeOwner=e;var r=(e?e.constructor:N)._parseTemplate(t),o=r.templatizeInstanceClass;o||(o=M(t,r,n),r.templatizeInstanceClass=o),L(t,r,n);var i=function(t){function e(){return C(this,e),g(this,P(e).apply(this,arguments))}return k(e,o),e}();return i.prototype._methodHost=I(t),i.prototype.__dataHost=t,i.prototype.__templatizeOwner=e,i.prototype.__hostProps=r.hostProps,i=i}function z(t,e){for(var n;e;)if(n=e.__templatizeInstance){if(n.__dataHost==t)return n;e=n.__dataHost}else e=e.parentNode;return null}var B=n(100);function q(t){return(q="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof 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@implements {Polymer_MutableData}\n */\n class MutableData extends superClass {\n /**\n * Overrides `PropertyEffects` to provide option for skipping\n * strict equality checking for Objects and Arrays.\n *\n * This method pulls the value to dirty check against from the `__dataTemp`\n * cache (rather than the normal `__data` cache) for Objects. Since the temp\n * cache is cleared at the end of a turn, this implementation allows\n * side-effects of deep object changes to be processed by re-setting the\n * same object (using the temp cache as an in-turn backstop to prevent\n * cycles due to 2-way notification).\n *\n * @param {string} property Property name\n * @param {*} value New property value\n * @param {*} old Previous property value\n * @return {boolean} Whether the property should be considered a change\n * @protected\n */\n _shouldPropertyChange(property, value, old) {\n return mutablePropertyChange(this, property, value, old, true);\n }\n\n }\n\n return MutableData;\n\n});\n\n/**\n * Element class mixin to add the optional ability to skip strict\n * dirty-checking for objects and arrays (always consider them to be\n * \"dirty\") by setting a `mutable-data` attribute on an element instance.\n *\n * By default, `PropertyEffects` performs strict dirty checking on\n * objects, which means that any deep modifications to an object or array will\n * not be propagated unless \"immutable\" data patterns are used (i.e. all object\n * references from the root to the mutation were changed).\n *\n * Polymer also provides a proprietary data mutation and path notification API\n * (e.g. `notifyPath`, `set`, and array mutation API's) that allow efficient\n * mutation and notification of deep changes in an object graph to all elements\n * bound to the same object graph.\n *\n * In cases where neither immutable patterns nor the data mutation API can be\n * used, applying this mixin will allow Polymer to skip dirty checking for\n * objects and arrays (always consider them to be \"dirty\"). 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Note that all\n * elements that wish to be updated based on deep mutations must apply this\n * mixin or otherwise skip strict dirty checking for objects/arrays.\n * Specifically, any elements in the binding tree between the source of a\n * mutation and the consumption of it must enable this mixin or apply the\n * `MutableData` mixin.\n *\n * While this mixin adds the ability to forgo Object/Array dirty checking,\n * the `mutableData` flag defaults to false and must be set on the instance.\n *\n * Note, the performance characteristics of propagating large object graphs\n * will be worse by relying on `mutableData: true` as opposed to using\n * strict dirty checking with immutable patterns or Polymer's path notification\n * API.\n *\n * @mixinFunction\n * @polymer\n * @summary Element class mixin to optionally skip strict dirty-checking\n * for objects and arrays\n */\nexport const OptionalMutableData = dedupingMixin(superClass => {\n\n /**\n * @mixinClass\n * @polymer\n * @implements {Polymer_OptionalMutableData}\n */\n class OptionalMutableData extends superClass {\n\n static get properties() {\n return {\n /**\n * Instance-level flag for configuring the dirty-checking strategy\n * for this element. When true, Objects and Arrays will skip dirty\n * checking, otherwise strict equality checking will be used.\n */\n mutableData: Boolean\n };\n }\n\n /**\n * Overrides `PropertyEffects` to provide option for skipping\n * strict equality checking for Objects and Arrays.\n *\n * When `this.mutableData` is true on this instance, this method\n * pulls the value to dirty check against from the `__dataTemp` cache\n * (rather than the normal `__data` cache) for Objects. Since the temp\n * cache is cleared at the end of a turn, this implementation allows\n * side-effects of deep object changes to be processed by re-setting the\n * same object (using the temp cache as an in-turn backstop to prevent\n * cycles due to 2-way notification).\n *\n * @param {string} property Property name\n * @param {*} value New property value\n * @param {*} old Previous property value\n * @return {boolean} Whether the property should be considered a change\n * @protected\n */\n _shouldPropertyChange(property, value, old) {\n return mutablePropertyChange(this, property, value, old, this.mutableData);\n }\n }\n\n return OptionalMutableData;\n\n});\n\n// Export for use by legacy behavior\nMutableData._mutablePropertyChange = mutablePropertyChange;\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * Module for preparing and stamping instances of templates that utilize\n * Polymer's data-binding and declarative event listener features.\n *\n * Example:\n *\n * // Get a template from somewhere, e.g. light DOM\n * let template = this.querySelector('template');\n * // Prepare the template\n * let TemplateClass = Templatize.templatize(template);\n * // Instance the template with an initial data model\n * let instance = new TemplateClass({myProp: 'initial'});\n * // Insert the instance's DOM somewhere, e.g. element's shadow DOM\n * this.shadowRoot.appendChild(instance.root);\n * // Changing a property on the instance will propagate to bindings\n * // in the template\n * instance.myProp = 'new value';\n *\n * The `options` dictionary passed to `templatize` allows for customizing\n * features of the generated template class, including how outer-scope host\n * properties should be forwarded into template instances, how any instance\n * properties added into the template's scope should be notified out to\n * the host, and whether the instance should be decorated as a \"parent model\"\n * of any event handlers.\n *\n * // Customize property forwarding and event model decoration\n * let TemplateClass = Templatize.templatize(template, this, {\n * parentModel: true,\n * forwardHostProp(property, value) {...},\n * instanceProps: {...},\n * notifyInstanceProp(instance, property, value) {...},\n * });\n *\n * @summary Module for preparing and stamping instances of templates\n * utilizing Polymer templating features.\n */\n\nimport './boot.js';\n\nimport { PropertyEffects } from '../mixins/property-effects.js';\nimport { MutableData } from '../mixins/mutable-data.js';\nimport { strictTemplatePolicy } from '../utils/settings.js';\n\n// Base class for HTMLTemplateElement extension that has property effects\n// machinery for propagating host properties to children. This is an ES5\n// class only because Babel (incorrectly) requires super() in the class\n// constructor even though no `this` is used and it returns an instance.\nlet newInstance = null;\n\n/**\n * @constructor\n * @extends {HTMLTemplateElement}\n * @private\n */\nfunction HTMLTemplateElementExtension() { return newInstance; }\nHTMLTemplateElementExtension.prototype = Object.create(HTMLTemplateElement.prototype, {\n constructor: {\n value: HTMLTemplateElementExtension,\n writable: true\n }\n});\n\n/**\n * @constructor\n * @implements {Polymer_PropertyEffects}\n * @extends {HTMLTemplateElementExtension}\n * @private\n */\nconst DataTemplate = PropertyEffects(HTMLTemplateElementExtension);\n\n/**\n * @constructor\n * @implements {Polymer_MutableData}\n * @extends {DataTemplate}\n * @private\n */\nconst MutableDataTemplate = MutableData(DataTemplate);\n\n// Applies a DataTemplate subclass to a instance\nfunction upgradeTemplate(template, constructor) {\n newInstance = template;\n Object.setPrototypeOf(template, constructor.prototype);\n new constructor();\n newInstance = null;\n}\n\n/**\n * Base class for TemplateInstance.\n * @constructor\n * @implements {Polymer_PropertyEffects}\n * @private\n */\nconst base = PropertyEffects(class {});\n\n/**\n * @polymer\n * @customElement\n * @appliesMixin PropertyEffects\n * @unrestricted\n */\nclass TemplateInstanceBase extends base {\n constructor(props) {\n super();\n this._configureProperties(props);\n this.root = this._stampTemplate(this.__dataHost);\n // Save list of stamped children\n let children = this.children = [];\n for (let n = this.root.firstChild; n; n=n.nextSibling) {\n children.push(n);\n n.__templatizeInstance = this;\n }\n if (this.__templatizeOwner &&\n this.__templatizeOwner.__hideTemplateChildren__) {\n this._showHideChildren(true);\n }\n // Flush props only when props are passed if instance props exist\n // or when there isn't instance props.\n let options = this.__templatizeOptions;\n if ((props && options.instanceProps) || !options.instanceProps) {\n this._enableProperties();\n }\n }\n /**\n * Configure the given `props` by calling `_setPendingProperty`. Also\n * sets any properties stored in `__hostProps`.\n * @private\n * @param {Object} props Object of property name-value pairs to set.\n * @return {void}\n */\n _configureProperties(props) {\n let options = this.__templatizeOptions;\n if (options.forwardHostProp) {\n for (let hprop in this.__hostProps) {\n this._setPendingProperty(hprop, this.__dataHost['_host_' + hprop]);\n }\n }\n // Any instance props passed in the constructor will overwrite host props;\n // normally this would be a user error but we don't specifically filter them\n for (let iprop in props) {\n this._setPendingProperty(iprop, props[iprop]);\n }\n }\n /**\n * Forwards a host property to this instance. This method should be\n * called on instances from the `options.forwardHostProp` callback\n * to propagate changes of host properties to each instance.\n *\n * Note this method enqueues the change, which are flushed as a batch.\n *\n * @param {string} prop Property or path name\n * @param {*} value Value of the property to forward\n * @return {void}\n */\n forwardHostProp(prop, value) {\n if (this._setPendingPropertyOrPath(prop, value, false, true)) {\n this.__dataHost._enqueueClient(this);\n }\n }\n\n /**\n * Override point for adding custom or simulated event handling.\n *\n * @override\n * @param {!Node} node Node to add event listener to\n * @param {string} eventName Name of event\n * @param {function(!Event):void} handler Listener function to add\n * @return {void}\n */\n _addEventListenerToNode(node, eventName, handler) {\n if (this._methodHost && this.__templatizeOptions.parentModel) {\n // If this instance should be considered a parent model, decorate\n // events this template instance as `model`\n this._methodHost._addEventListenerToNode(node, eventName, (e) => {\n e.model = this;\n handler(e);\n });\n } else {\n // Otherwise delegate to the template's host (which could be)\n // another template instance\n let templateHost = this.__dataHost.__dataHost;\n if (templateHost) {\n templateHost._addEventListenerToNode(node, eventName, handler);\n }\n }\n }\n /**\n * Shows or hides the template instance top level child elements. For\n * text nodes, `textContent` is removed while \"hidden\" and replaced when\n * \"shown.\"\n * @param {boolean} hide Set to true to hide the children;\n * set to false to show them.\n * @return {void}\n * @protected\n */\n _showHideChildren(hide) {\n let c = this.children;\n for (let i=0; i\n // `model.__dataHost.__dataHost` is the template's host\n model = model.__dataHost.__dataHost;\n } while ((options = model.__templatizeOptions) && !options.parentModel);\n this.__parentModel = model;\n }\n return model;\n }\n\n /**\n * Stub of HTMLElement's `dispatchEvent`, so that effects that may\n * dispatch events safely no-op.\n *\n * @param {Event} event Event to dispatch\n * @return {boolean} Always true.\n */\n dispatchEvent(event) { // eslint-disable-line no-unused-vars\n return true;\n }\n}\n\n/** @type {!DataTemplate} */\nTemplateInstanceBase.prototype.__dataHost;\n/** @type {!TemplatizeOptions} */\nTemplateInstanceBase.prototype.__templatizeOptions;\n/** @type {!Polymer_PropertyEffects} */\nTemplateInstanceBase.prototype._methodHost;\n/** @type {!Object} */\nTemplateInstanceBase.prototype.__templatizeOwner;\n/** @type {!Object} */\nTemplateInstanceBase.prototype.__hostProps;\n\n/**\n * @constructor\n * @extends {TemplateInstanceBase}\n * @implements {Polymer_MutableData}\n * @private\n */\nconst MutableTemplateInstanceBase = MutableData(TemplateInstanceBase);\n\nfunction findMethodHost(template) {\n // Technically this should be the owner of the outermost template.\n // In shadow dom, this is always getRootNode().host, but we can\n // approximate this via cooperation with our dataHost always setting\n // `_methodHost` as long as there were bindings (or id's) on this\n // instance causing it to get a dataHost.\n let templateHost = template.__dataHost;\n return templateHost && templateHost._methodHost || templateHost;\n}\n\n/* eslint-disable valid-jsdoc */\n/**\n * @suppress {missingProperties} class.prototype is not defined for some reason\n */\nfunction createTemplatizerClass(template, templateInfo, options) {\n // Anonymous class created by the templatize\n let base = options.mutableData ?\n MutableTemplateInstanceBase : TemplateInstanceBase;\n /**\n * @constructor\n * @extends {base}\n * @private\n */\n let klass = class extends base { };\n klass.prototype.__templatizeOptions = options;\n klass.prototype._bindTemplate(template);\n addNotifyEffects(klass, template, templateInfo, options);\n return klass;\n}\n\n/**\n * @suppress {missingProperties} class.prototype is not defined for some reason\n */\nfunction addPropagateEffects(template, templateInfo, options) {\n let userForwardHostProp = options.forwardHostProp;\n if (userForwardHostProp) {\n // Provide data API and property effects on memoized template class\n let klass = templateInfo.templatizeTemplateClass;\n if (!klass) {\n let base = options.mutableData ? MutableDataTemplate : DataTemplate;\n /** @private */\n klass = templateInfo.templatizeTemplateClass =\n class TemplatizedTemplate extends base {};\n // Add template - >instances effects\n // and host <- template effects\n let hostProps = templateInfo.hostProps;\n for (let prop in hostProps) {\n klass.prototype._addPropertyEffect('_host_' + prop,\n klass.prototype.PROPERTY_EFFECT_TYPES.PROPAGATE,\n {fn: createForwardHostPropEffect(prop, userForwardHostProp)});\n klass.prototype._createNotifyingProperty('_host_' + prop);\n }\n }\n upgradeTemplate(template, klass);\n // Mix any pre-bound data into __data; no need to flush this to\n // instances since they pull from the template at instance-time\n if (template.__dataProto) {\n // Note, generally `__dataProto` could be chained, but it's guaranteed\n // to not be since this is a vanilla template we just added effects to\n Object.assign(template.__data, template.__dataProto);\n }\n // Clear any pending data for performance\n template.__dataTemp = {};\n template.__dataPending = null;\n template.__dataOld = null;\n template._enableProperties();\n }\n}\n/* eslint-enable valid-jsdoc */\n\nfunction createForwardHostPropEffect(hostProp, userForwardHostProp) {\n return function forwardHostProp(template, prop, props) {\n userForwardHostProp.call(template.__templatizeOwner,\n prop.substring('_host_'.length), props[prop]);\n };\n}\n\nfunction addNotifyEffects(klass, template, templateInfo, options) {\n let hostProps = templateInfo.hostProps || {};\n for (let iprop in options.instanceProps) {\n delete hostProps[iprop];\n let userNotifyInstanceProp = options.notifyInstanceProp;\n if (userNotifyInstanceProp) {\n klass.prototype._addPropertyEffect(iprop,\n klass.prototype.PROPERTY_EFFECT_TYPES.NOTIFY,\n {fn: createNotifyInstancePropEffect(iprop, userNotifyInstanceProp)});\n }\n }\n if (options.forwardHostProp && template.__dataHost) {\n for (let hprop in hostProps) {\n klass.prototype._addPropertyEffect(hprop,\n klass.prototype.PROPERTY_EFFECT_TYPES.NOTIFY,\n {fn: createNotifyHostPropEffect()});\n }\n }\n}\n\nfunction createNotifyInstancePropEffect(instProp, userNotifyInstanceProp) {\n return function notifyInstanceProp(inst, prop, props) {\n userNotifyInstanceProp.call(inst.__templatizeOwner,\n inst, prop, props[prop]);\n };\n}\n\nfunction createNotifyHostPropEffect() {\n return function notifyHostProp(inst, prop, props) {\n inst.__dataHost._setPendingPropertyOrPath('_host_' + prop, props[prop], true, true);\n };\n}\n\n\n/**\n * Returns an anonymous `PropertyEffects` class bound to the\n * `` provided. Instancing the class will result in the\n * template being stamped into a document fragment stored as the instance's\n * `root` property, after which it can be appended to the DOM.\n *\n * Templates may utilize all Polymer data-binding features as well as\n * declarative event listeners. Event listeners and inline computing\n * functions in the template will be called on the host of the template.\n *\n * The constructor returned takes a single argument dictionary of initial\n * property values to propagate into template bindings. Additionally\n * host properties can be forwarded in, and instance properties can be\n * notified out by providing optional callbacks in the `options` dictionary.\n *\n * Valid configuration in `options` are as follows:\n *\n * - `forwardHostProp(property, value)`: Called when a property referenced\n * in the template changed on the template's host. As this library does\n * not retain references to templates instanced by the user, it is the\n * templatize owner's responsibility to forward host property changes into\n * user-stamped instances. The `instance.forwardHostProp(property, value)`\n * method on the generated class should be called to forward host\n * properties into the template to prevent unnecessary property-changed\n * notifications. Any properties referenced in the template that are not\n * defined in `instanceProps` will be notified up to the template's host\n * automatically.\n * - `instanceProps`: Dictionary of property names that will be added\n * to the instance by the templatize owner. These properties shadow any\n * host properties, and changes within the template to these properties\n * will result in `notifyInstanceProp` being called.\n * - `mutableData`: When `true`, the generated class will skip strict\n * dirty-checking for objects and arrays (always consider them to be\n * \"dirty\").\n * - `notifyInstanceProp(instance, property, value)`: Called when\n * an instance property changes. Users may choose to call `notifyPath`\n * on e.g. the owner to notify the change.\n * - `parentModel`: When `true`, events handled by declarative event listeners\n * (`on-event=\"handler\"`) will be decorated with a `model` property pointing\n * to the template instance that stamped it. It will also be returned\n * from `instance.parentModel` in cases where template instance nesting\n * causes an inner model to shadow an outer model.\n *\n * All callbacks are called bound to the `owner`. Any context\n * needed for the callbacks (such as references to `instances` stamped)\n * should be stored on the `owner` such that they can be retrieved via\n * `this`.\n *\n * When `options.forwardHostProp` is declared as an option, any properties\n * referenced in the template will be automatically forwarded from the host of\n * the `` to instances, with the exception of any properties listed in\n * the `options.instanceProps` object. `instanceProps` are assumed to be\n * managed by the owner of the instances, either passed into the constructor\n * or set after the fact. Note, any properties passed into the constructor will\n * always be set to the instance (regardless of whether they would normally\n * be forwarded from the host).\n *\n * Note that `templatize()` can be run only once for a given ``.\n * Further calls will result in an error. Also, there is a special\n * behavior if the template was duplicated through a mechanism such as\n * `` or ``. In this case, all calls to\n * `templatize()` return the same class for all duplicates of a template.\n * The class returned from `templatize()` is generated only once using\n * the `options` from the first call. This means that any `options`\n * provided to subsequent calls will be ignored. Therefore, it is very\n * important not to close over any variables inside the callbacks. Also,\n * arrow functions must be avoided because they bind the outer `this`.\n * Inside the callbacks, any contextual information can be accessed\n * through `this`, which points to the `owner`.\n *\n * @param {!HTMLTemplateElement} template Template to templatize\n * @param {Polymer_PropertyEffects=} owner Owner of the template instances;\n * any optional callbacks will be bound to this owner.\n * @param {Object=} options Options dictionary (see summary for details)\n * @return {function(new:TemplateInstanceBase)} Generated class bound to the template\n * provided\n * @suppress {invalidCasts}\n */\nexport function templatize(template, owner, options) {\n // Under strictTemplatePolicy, the templatized element must be owned\n // by a (trusted) Polymer element, indicated by existence of _methodHost;\n // e.g. for dom-if & dom-repeat in main document, _methodHost is null\n if (strictTemplatePolicy && !findMethodHost(template)) {\n throw new Error('strictTemplatePolicy: template owner not trusted');\n }\n options = /** @type {!TemplatizeOptions} */(options || {});\n if (template.__templatizeOwner) {\n throw new Error('A can only be templatized once');\n }\n template.__templatizeOwner = owner;\n const ctor = owner ? owner.constructor : TemplateInstanceBase;\n let templateInfo = ctor._parseTemplate(template);\n // Get memoized base class for the prototypical template, which\n // includes property effects for binding template & forwarding\n let baseClass = templateInfo.templatizeInstanceClass;\n if (!baseClass) {\n baseClass = createTemplatizerClass(template, templateInfo, options);\n templateInfo.templatizeInstanceClass = baseClass;\n }\n // Host property forwarding must be installed onto template instance\n addPropagateEffects(template, templateInfo, options);\n // Subclass base class and add reference for this specific template\n /** @private */\n let klass = class TemplateInstance extends baseClass {};\n klass.prototype._methodHost = findMethodHost(template);\n klass.prototype.__dataHost = template;\n klass.prototype.__templatizeOwner = owner;\n klass.prototype.__hostProps = templateInfo.hostProps;\n klass = /** @type {function(new:TemplateInstanceBase)} */(klass); //eslint-disable-line no-self-assign\n return klass;\n}\n\n/**\n * Returns the template \"model\" associated with a given element, which\n * serves as the binding scope for the template instance the element is\n * contained in. A template model is an instance of\n * `TemplateInstanceBase`, and should be used to manipulate data\n * associated with this template instance.\n *\n * Example:\n *\n * let model = modelForElement(el);\n * if (model.index < 10) {\n * model.set('item.checked', true);\n * }\n *\n * @param {HTMLTemplateElement} template The model will be returned for\n * elements stamped from this template\n * @param {Node=} node Node for which to return a template model.\n * @return {TemplateInstanceBase} Template instance representing the\n * binding scope for the element\n */\nexport function modelForElement(template, node) {\n let model;\n while (node) {\n // An element with a __templatizeInstance marks the top boundary\n // of a scope; walk up until we find one, and then ensure that\n // its __dataHost matches `this`, meaning this dom-repeat stamped it\n if ((model = node.__templatizeInstance)) {\n // Found an element stamped by another template; keep walking up\n // from its __dataHost\n if (model.__dataHost != template) {\n node = model.__dataHost;\n } else {\n return model;\n }\n } else {\n // Still in a template scope, keep going up until\n // a __templatizeInstance is found\n node = node.parentNode;\n }\n }\n return null;\n}\n\nexport { TemplateInstanceBase };\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport { TemplateInstanceBase, templatize, modelForElement } from '../utils/templatize.js'; // eslint-disable-line no-unused-vars\n\n/**\n * @typedef {{\n * _templatizerTemplate: HTMLTemplateElement,\n * _parentModel: boolean,\n * _instanceProps: Object,\n * _forwardHostPropV2: Function,\n * _notifyInstancePropV2: Function,\n * ctor: TemplateInstanceBase\n * }}\n */\nlet TemplatizerUser; // eslint-disable-line\n\n/**\n * The `Templatizer` behavior adds methods to generate instances of\n * templates that are each managed by an anonymous `PropertyEffects`\n * instance where data-bindings in the stamped template content are bound to\n * accessors on itself.\n *\n * This behavior is provided in Polymer 2.x-3.x as a hybrid-element convenience\n * only. For non-hybrid usage, the `Templatize` library\n * should be used instead.\n *\n * Example:\n *\n * import {dom} from '@polymer/polymer/lib/legacy/polymer.dom.js';\n * // Get a template from somewhere, e.g. light DOM\n * let template = this.querySelector('template');\n * // Prepare the template\n * this.templatize(template);\n * // Instance the template with an initial data model\n * let instance = this.stamp({myProp: 'initial'});\n * // Insert the instance's DOM somewhere, e.g. light DOM\n * dom(this).appendChild(instance.root);\n * // Changing a property on the instance will propagate to bindings\n * // in the template\n * instance.myProp = 'new value';\n *\n * Users of `Templatizer` may need to implement the following abstract\n * API's to determine how properties and paths from the host should be\n * forwarded into to instances:\n *\n * _forwardHostPropV2: function(prop, value)\n *\n * Likewise, users may implement these additional abstract API's to determine\n * how instance-specific properties that change on the instance should be\n * forwarded out to the host, if necessary.\n *\n * _notifyInstancePropV2: function(inst, prop, value)\n *\n * In order to determine which properties are instance-specific and require\n * custom notification via `_notifyInstanceProp`, define an `_instanceProps`\n * object containing keys for each instance prop, for example:\n *\n * _instanceProps: {\n * item: true,\n * index: true\n * }\n *\n * Any properties used in the template that are not defined in _instanceProp\n * will be forwarded out to the Templatize `owner` automatically.\n *\n * Users may also implement the following abstract function to show or\n * hide any DOM generated using `stamp`:\n *\n * _showHideChildren: function(shouldHide)\n *\n * Note that some callbacks are suffixed with `V2` in the Polymer 2.x behavior\n * as the implementations will need to differ from the callbacks required\n * by the 1.x Templatizer API due to changes in the `TemplateInstance` API\n * between versions 1.x and 2.x.\n *\n * @polymerBehavior\n */\nexport const Templatizer = {\n\n /**\n * Generates an anonymous `TemplateInstance` class (stored as `this.ctor`)\n * for the provided template. This method should be called once per\n * template to prepare an element for stamping the template, followed\n * by `stamp` to create new instances of the template.\n *\n * @param {!HTMLTemplateElement} template Template to prepare\n * @param {boolean=} mutableData When `true`, the generated class will skip\n * strict dirty-checking for objects and arrays (always consider them to\n * be \"dirty\"). Defaults to false.\n * @return {void}\n * @this {TemplatizerUser}\n */\n templatize(template, mutableData) {\n this._templatizerTemplate = template;\n this.ctor = templatize(template, this, {\n mutableData: Boolean(mutableData),\n parentModel: this._parentModel,\n instanceProps: this._instanceProps,\n forwardHostProp: this._forwardHostPropV2,\n notifyInstanceProp: this._notifyInstancePropV2\n });\n },\n\n /**\n * Creates an instance of the template prepared by `templatize`. The object\n * returned is an instance of the anonymous class generated by `templatize`\n * whose `root` property is a document fragment containing newly cloned\n * template content, and which has property accessors corresponding to\n * properties referenced in template bindings.\n *\n * @param {Object=} model Object containing initial property values to\n * populate into the template bindings.\n * @return {TemplateInstanceBase} Returns the created instance of\n * the template prepared by `templatize`.\n * @this {TemplatizerUser}\n */\n stamp(model) {\n return new this.ctor(model);\n },\n\n /**\n * Returns the template \"model\" (`TemplateInstance`) associated with\n * a given element, which serves as the binding scope for the template\n * instance the element is contained in. A template model should be used\n * to manipulate data associated with this template instance.\n *\n * @param {HTMLElement} el Element for which to return a template model.\n * @return {TemplateInstanceBase} Model representing the binding scope for\n * the element.\n * @this {TemplatizerUser}\n */\n modelForElement(el) {\n return modelForElement(this._templatizerTemplate, el);\n }\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { PropertyEffects } from '../mixins/property-effects.js';\nimport { OptionalMutableData } from '../mixins/mutable-data.js';\nimport { GestureEventListeners } from '../mixins/gesture-event-listeners.js';\nimport { strictTemplatePolicy } from '../utils/settings.js';\n\n/**\n * @constructor\n * @extends {HTMLElement}\n * @implements {Polymer_PropertyEffects}\n * @implements {Polymer_OptionalMutableData}\n * @implements {Polymer_GestureEventListeners}\n * @private\n */\nconst domBindBase =\n GestureEventListeners(\n OptionalMutableData(\n PropertyEffects(HTMLElement)));\n\n/**\n * Custom element to allow using Polymer's template features (data binding,\n * declarative event listeners, etc.) in the main document without defining\n * a new custom element.\n *\n * `` tags utilizing bindings may be wrapped with the ``\n * element, which will immediately stamp the wrapped template into the main\n * document and bind elements to the `dom-bind` element itself as the\n * binding scope.\n *\n * @polymer\n * @customElement\n * @appliesMixin PropertyEffects\n * @appliesMixin OptionalMutableData\n * @appliesMixin GestureEventListeners\n * @extends {domBindBase}\n * @summary Custom element to allow using Polymer's template features (data\n * binding, declarative event listeners, etc.) in the main document.\n */\nexport class DomBind extends domBindBase {\n\n static get observedAttributes() { return ['mutable-data']; }\n\n constructor() {\n super();\n if (strictTemplatePolicy) {\n throw new Error(`strictTemplatePolicy: dom-bind not allowed`);\n }\n this.root = null;\n this.$ = null;\n this.__children = null;\n }\n\n /**\n * @override\n * @return {void}\n */\n attributeChangedCallback() {\n // assumes only one observed attribute\n this.mutableData = true;\n }\n\n /**\n * @override\n * @return {void}\n */\n connectedCallback() {\n this.style.display = 'none';\n this.render();\n }\n\n /**\n * @override\n * @return {void}\n */\n disconnectedCallback() {\n this.__removeChildren();\n }\n\n __insertChildren() {\n this.parentNode.insertBefore(this.root, this);\n }\n\n __removeChildren() {\n if (this.__children) {\n for (let i=0; i {\n template = /** @type {HTMLTemplateElement} */(this.querySelector('template'));\n if (template) {\n observer.disconnect();\n this.render();\n } else {\n throw new Error('dom-bind requires a child');\n }\n });\n observer.observe(this, {childList: true});\n return;\n }\n this.root = this._stampTemplate(\n /** @type {!HTMLTemplateElement} */(template));\n this.$ = this.root.$;\n this.__children = [];\n for (let n=this.root.firstChild; n; n=n.nextSibling) {\n this.__children[this.__children.length] = n;\n }\n this._enableProperties();\n }\n this.__insertChildren();\n this.dispatchEvent(new CustomEvent('dom-change', {\n bubbles: true,\n composed: true\n }));\n }\n\n}\n\ncustomElements.define('dom-bind', DomBind);\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport { PolymerElement } from '../../polymer-element.js';\n\nimport { TemplateInstanceBase, templatize, modelForElement } from '../utils/templatize.js'; // eslint-disable-line no-unused-vars\nimport { Debouncer } from '../utils/debounce.js';\nimport { enqueueDebouncer, flush } from '../utils/flush.js';\nimport { OptionalMutableData } from '../mixins/mutable-data.js';\nimport { matches, translate } from '../utils/path.js';\nimport { timeOut, microTask } from '../utils/async.js';\n\n/**\n * @constructor\n * @implements {Polymer_OptionalMutableData}\n * @extends {PolymerElement}\n * @private\n */\nconst domRepeatBase = OptionalMutableData(PolymerElement);\n\n/**\n * The `` element will automatically stamp and binds one instance\n * of template content to each object in a user-provided array.\n * `dom-repeat` accepts an `items` property, and one instance of the template\n * is stamped for each item into the DOM at the location of the `dom-repeat`\n * element. The `item` property will be set on each instance's binding\n * scope, thus templates should bind to sub-properties of `item`.\n *\n * Example:\n *\n * ```html\n * \n *\n * \n *\n * Employee list: \n * \n * \n * First name: {{item.first}}\n * Last name: {{item.last}}\n * \n * \n *\n * \n *\n * \n * ```\n *\n * With the following custom element definition:\n *\n * ```js\n * class EmployeeList extends PolymerElement {\n * static get is() { return 'employee-list'; }\n * static get properties() {\n * return {\n * employees: {\n * value() {\n * return [\n * {first: 'Bob', last: 'Smith'},\n * {first: 'Sally', last: 'Johnson'},\n * ...\n * ];\n * }\n * }\n * };\n * }\n * }\n * ```\n *\n * Notifications for changes to items sub-properties will be forwarded to template\n * instances, which will update via the normal structured data notification system.\n *\n * Mutations to the `items` array itself should be made using the Array\n * mutation API's on the PropertyEffects mixin (`push`, `pop`, `splice`,\n * `shift`, `unshift`), and template instances will be kept in sync with the\n * data in the array.\n *\n * Events caught by event handlers within the `dom-repeat` template will be\n * decorated with a `model` property, which represents the binding scope for\n * each template instance. The model should be used to manipulate data on the\n * instance, for example `event.model.set('item.checked', true);`.\n *\n * Alternatively, the model for a template instance for an element stamped by\n * a `dom-repeat` can be obtained using the `modelForElement` API on the\n * `dom-repeat` that stamped it, for example\n * `this.$.domRepeat.modelForElement(event.target).set('item.checked', true);`.\n * This may be useful for manipulating instance data of event targets obtained\n * by event handlers on parents of the `dom-repeat` (event delegation).\n *\n * A view-specific filter/sort may be applied to each `dom-repeat` by supplying a\n * `filter` and/or `sort` property. This may be a string that names a function on\n * the host, or a function may be assigned to the property directly. The functions\n * should implemented following the standard `Array` filter/sort API.\n *\n * In order to re-run the filter or sort functions based on changes to sub-fields\n * of `items`, the `observe` property may be set as a space-separated list of\n * `item` sub-fields that should cause a re-filter/sort when modified. If\n * the filter or sort function depends on properties not contained in `items`,\n * the user should observe changes to those properties and call `render` to update\n * the view based on the dependency change.\n *\n * For example, for an `dom-repeat` with a filter of the following:\n *\n * ```js\n * isEngineer(item) {\n * return item.type == 'engineer' || item.manager.type == 'engineer';\n * }\n * ```\n *\n * Then the `observe` property should be configured as follows:\n *\n * ```html\n * \n * ```\n *\n * @customElement\n * @polymer\n * @extends {domRepeatBase}\n * @appliesMixin OptionalMutableData\n * @summary Custom element for stamping instance of a template bound to\n * items in an array.\n */\nexport class DomRepeat extends domRepeatBase {\n\n // Not needed to find template; can be removed once the analyzer\n // can find the tag name from customElements.define call\n static get is() { return 'dom-repeat'; }\n\n static get template() { return null; }\n\n static get properties() {\n\n /**\n * Fired whenever DOM is added or removed by this template (by\n * default, rendering occurs lazily). To force immediate rendering, call\n * `render`.\n *\n * @event dom-change\n */\n return {\n\n /**\n * An array containing items determining how many instances of the template\n * to stamp and that that each template instance should bind to.\n */\n items: {\n type: Array\n },\n\n /**\n * The name of the variable to add to the binding scope for the array\n * element associated with a given template instance.\n */\n as: {\n type: String,\n value: 'item'\n },\n\n /**\n * The name of the variable to add to the binding scope with the index\n * of the instance in the sorted and filtered list of rendered items.\n * Note, for the index in the `this.items` array, use the value of the\n * `itemsIndexAs` property.\n */\n indexAs: {\n type: String,\n value: 'index'\n },\n\n /**\n * The name of the variable to add to the binding scope with the index\n * of the instance in the `this.items` array. Note, for the index of\n * this instance in the sorted and filtered list of rendered items,\n * use the value of the `indexAs` property.\n */\n itemsIndexAs: {\n type: String,\n value: 'itemsIndex'\n },\n\n /**\n * A function that should determine the sort order of the items. This\n * property should either be provided as a string, indicating a method\n * name on the element's host, or else be an actual function. The\n * function should match the sort function passed to `Array.sort`.\n * Using a sort function has no effect on the underlying `items` array.\n */\n sort: {\n type: Function,\n observer: '__sortChanged'\n },\n\n /**\n * A function that can be used to filter items out of the view. This\n * property should either be provided as a string, indicating a method\n * name on the element's host, or else be an actual function. The\n * function should match the sort function passed to `Array.filter`.\n * Using a filter function has no effect on the underlying `items` array.\n */\n filter: {\n type: Function,\n observer: '__filterChanged'\n },\n\n /**\n * When using a `filter` or `sort` function, the `observe` property\n * should be set to a space-separated list of the names of item\n * sub-fields that should trigger a re-sort or re-filter when changed.\n * These should generally be fields of `item` that the sort or filter\n * function depends on.\n */\n observe: {\n type: String,\n observer: '__observeChanged'\n },\n\n /**\n * When using a `filter` or `sort` function, the `delay` property\n * determines a debounce time in ms after a change to observed item\n * properties that must pass before the filter or sort is re-run.\n * This is useful in rate-limiting shuffling of the view when\n * item changes may be frequent.\n */\n delay: Number,\n\n /**\n * Count of currently rendered items after `filter` (if any) has been applied.\n * If \"chunking mode\" is enabled, `renderedItemCount` is updated each time a\n * set of template instances is rendered.\n *\n */\n renderedItemCount: {\n type: Number,\n notify: true,\n readOnly: true\n },\n\n /**\n * Defines an initial count of template instances to render after setting\n * the `items` array, before the next paint, and puts the `dom-repeat`\n * into \"chunking mode\". The remaining items will be created and rendered\n * incrementally at each animation frame therof until all instances have\n * been rendered.\n */\n initialCount: {\n type: Number,\n observer: '__initializeChunking'\n },\n\n /**\n * When `initialCount` is used, this property defines a frame rate (in\n * fps) to target by throttling the number of instances rendered each\n * frame to not exceed the budget for the target frame rate. The\n * framerate is effectively the number of `requestAnimationFrame`s that\n * it tries to allow to actually fire in a given second. It does this\n * by measuring the time between `rAF`s and continuously adjusting the\n * number of items created each `rAF` to maintain the target framerate.\n * Setting this to a higher number allows lower latency and higher\n * throughput for event handlers and other tasks, but results in a\n * longer time for the remaining items to complete rendering.\n */\n targetFramerate: {\n type: Number,\n value: 20\n },\n\n _targetFrameTime: {\n type: Number,\n computed: '__computeFrameTime(targetFramerate)'\n }\n\n };\n\n }\n\n static get observers() {\n return [ '__itemsChanged(items.*)' ];\n }\n\n constructor() {\n super();\n this.__instances = [];\n this.__limit = Infinity;\n this.__pool = [];\n this.__renderDebouncer = null;\n this.__itemsIdxToInstIdx = {};\n this.__chunkCount = null;\n this.__lastChunkTime = null;\n this.__sortFn = null;\n this.__filterFn = null;\n this.__observePaths = null;\n /** @type {?function(new:Polymer.TemplateInstanceBase, *)} */\n this.__ctor = null;\n this.__isDetached = true;\n this.template = null;\n }\n\n /**\n * @override\n * @return {void}\n */\n disconnectedCallback() {\n super.disconnectedCallback();\n this.__isDetached = true;\n for (let i=0; i {\n if (this.querySelector('template')) {\n observer.disconnect();\n this.__render();\n } else {\n throw new Error('dom-repeat requires a child');\n }\n });\n observer.observe(this, {childList: true});\n return false;\n }\n // Template instance props that should be excluded from forwarding\n let instanceProps = {};\n instanceProps[this.as] = true;\n instanceProps[this.indexAs] = true;\n instanceProps[this.itemsIndexAs] = true;\n this.__ctor = templatize(template, this, {\n mutableData: this.mutableData,\n parentModel: true,\n instanceProps: instanceProps,\n /**\n * @this {DomRepeat}\n * @param {string} prop Property to set\n * @param {*} value Value to set property to\n */\n forwardHostProp: function(prop, value) {\n let i$ = this.__instances;\n for (let i=0, inst; (ithis.__renderChunk());\n }\n\n __renderChunk() {\n // Simple auto chunkSize throttling algorithm based on feedback loop:\n // measure actual time between frames and scale chunk count by ratio\n // of target/actual frame time\n let currChunkTime = performance.now();\n let ratio = this._targetFrameTime / (currChunkTime - this.__lastChunkTime);\n this.__chunkCount = Math.round(this.__chunkCount * ratio) || 1;\n this.__limit += this.__chunkCount;\n this.__lastChunkTime = currChunkTime;\n this.__debounceRender(this.__render);\n }\n\n __observeChanged() {\n this.__observePaths = this.observe &&\n this.observe.replace('.*', '.').split(' ');\n }\n\n __itemsChanged(change) {\n if (this.items && !Array.isArray(this.items)) {\n console.warn('dom-repeat expected array for `items`, found', this.items);\n }\n // If path was to an item (e.g. 'items.3' or 'items.3.foo'), forward the\n // path to that instance synchronously (returns false for non-item paths)\n if (!this.__handleItemPath(change.path, change.value)) {\n // Otherwise, the array was reset ('items') or spliced ('items.splices'),\n // so queue a full refresh\n this.__initializeChunking();\n this.__debounceRender(this.__render);\n }\n }\n\n __handleObservedPaths(path) {\n // Handle cases where path changes should cause a re-sort/filter\n if (this.__sortFn || this.__filterFn) {\n if (!path) {\n // Always re-render if the item itself changed\n this.__debounceRender(this.__render, this.delay);\n } else if (this.__observePaths) {\n // Otherwise, re-render if the path changed matches an observed path\n let paths = this.__observePaths;\n for (let i=0; i 0 ? timeOut.after(delay) : microTask\n , fn.bind(this));\n enqueueDebouncer(this.__renderDebouncer);\n }\n\n /**\n * Forces the element to render its content. Normally rendering is\n * asynchronous to a provoking change. This is done for efficiency so\n * that multiple changes trigger only a single render. The render method\n * should be called if, for example, template rendering is required to\n * validate application state.\n * @return {void}\n */\n render() {\n // Queue this repeater, then flush all in order\n this.__debounceRender(this.__render);\n flush();\n }\n\n __render() {\n if (!this.__ensureTemplatized()) {\n // No template found yet\n return;\n }\n this.__applyFullRefresh();\n // Reset the pool\n // TODO(kschaaf): Reuse pool across turns and nested templates\n // Now that objects/arrays are re-evaluated when set, we can safely\n // reuse pooled instances across turns, however we still need to decide\n // semantics regarding how long to hold, how many to hold, etc.\n this.__pool.length = 0;\n // Set rendered item count\n this._setRenderedItemCount(this.__instances.length);\n // Notify users\n this.dispatchEvent(new CustomEvent('dom-change', {\n bubbles: true,\n composed: true\n }));\n // Check to see if we need to render more items\n this.__tryRenderChunk();\n }\n\n __applyFullRefresh() {\n let items = this.items || [];\n let isntIdxToItemsIdx = new Array(items.length);\n for (let i=0; i\n this.__filterFn(items[i], idx, array));\n }\n // Apply user sort\n if (this.__sortFn) {\n isntIdxToItemsIdx.sort((a, b) => this.__sortFn(items[a], items[b]));\n }\n // items->inst map kept for item path forwarding\n const itemsIdxToInstIdx = this.__itemsIdxToInstIdx = {};\n let instIdx = 0;\n // Generate instances and assign items\n const limit = Math.min(isntIdxToItemsIdx.length, this.__limit);\n for (; instIdx=instIdx; i--) {\n this.__detachAndRemoveInstance(i);\n }\n }\n\n __detachInstance(idx) {\n let inst = this.__instances[idx];\n for (let i=0; i. path change,\n // responsible for notifying item. changes to inst for key\n __handleItemPath(path, value) {\n let itemsPath = path.slice(6); // 'items.'.length == 6\n let dot = itemsPath.indexOf('.');\n let itemsIdx = dot < 0 ? itemsPath : itemsPath.substring(0, dot);\n // If path was index into array...\n if (itemsIdx == parseInt(itemsIdx, 10)) {\n let itemSubPath = dot < 0 ? '' : itemsPath.substring(dot+1);\n // If the path is observed, it will trigger a full refresh\n this.__handleObservedPaths(itemSubPath);\n // Note, even if a rull refresh is triggered, always do the path\n // notification because unless mutableData is used for dom-repeat\n // and all elements in the instance subtree, a full refresh may\n // not trigger the proper update.\n let instIdx = this.__itemsIdxToInstIdx[itemsIdx];\n let inst = this.__instances[instIdx];\n if (inst) {\n let itemPath = this.as + (itemSubPath ? '.' + itemSubPath : '');\n // This is effectively `notifyPath`, but avoids some of the overhead\n // of the public API\n inst._setPendingPropertyOrPath(itemPath, value, false, true);\n inst._flushProperties();\n }\n return true;\n }\n }\n\n /**\n * Returns the item associated with a given element stamped by\n * this `dom-repeat`.\n *\n * Note, to modify sub-properties of the item,\n * `modelForElement(el).set('item.', value)`\n * should be used.\n *\n * @param {!HTMLElement} el Element for which to return the item.\n * @return {*} Item associated with the element.\n */\n itemForElement(el) {\n let instance = this.modelForElement(el);\n return instance && instance[this.as];\n }\n\n /**\n * Returns the inst index for a given element stamped by this `dom-repeat`.\n * If `sort` is provided, the index will reflect the sorted order (rather\n * than the original array order).\n *\n * @param {!HTMLElement} el Element for which to return the index.\n * @return {?number} Row index associated with the element (note this may\n * not correspond to the array index if a user `sort` is applied).\n */\n indexForElement(el) {\n let instance = this.modelForElement(el);\n return instance && instance[this.indexAs];\n }\n\n /**\n * Returns the template \"model\" associated with a given element, which\n * serves as the binding scope for the template instance the element is\n * contained in. A template model\n * should be used to manipulate data associated with this template instance.\n *\n * Example:\n *\n * let model = modelForElement(el);\n * if (model.index < 10) {\n * model.set('item.checked', true);\n * }\n *\n * @param {!HTMLElement} el Element for which to return a template model.\n * @return {TemplateInstanceBase} Model representing the binding scope for\n * the element.\n */\n modelForElement(el) {\n return modelForElement(this.template, el);\n }\n\n}\n\ncustomElements.define(DomRepeat.is, DomRepeat);\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport { PolymerElement } from '../../polymer-element.js';\n\nimport { templatize } from '../utils/templatize.js';\nimport { Debouncer } from '../utils/debounce.js';\nimport { enqueueDebouncer, flush } from '../utils/flush.js';\nimport { microTask } from '../utils/async.js';\nimport { root } from '../utils/path.js';\n\n/**\n * The `` element will stamp a light-dom `` child when\n * the `if` property becomes truthy, and the template can use Polymer\n * data-binding and declarative event features when used in the context of\n * a Polymer element's template.\n *\n * When `if` becomes falsy, the stamped content is hidden but not\n * removed from dom. When `if` subsequently becomes truthy again, the content\n * is simply re-shown. This approach is used due to its favorable performance\n * characteristics: the expense of creating template content is paid only\n * once and lazily.\n *\n * Set the `restamp` property to true to force the stamped content to be\n * created / destroyed when the `if` condition changes.\n *\n * @customElement\n * @polymer\n * @extends PolymerElement\n * @summary Custom element that conditionally stamps and hides or removes\n * template content based on a boolean flag.\n */\nexport class DomIf extends PolymerElement {\n\n // Not needed to find template; can be removed once the analyzer\n // can find the tag name from customElements.define call\n static get is() { return 'dom-if'; }\n\n static get template() { return null; }\n\n static get properties() {\n\n return {\n\n /**\n * Fired whenever DOM is added or removed/hidden by this template (by\n * default, rendering occurs lazily). To force immediate rendering, call\n * `render`.\n *\n * @event dom-change\n */\n\n /**\n * A boolean indicating whether this template should stamp.\n */\n if: {\n type: Boolean,\n observer: '__debounceRender'\n },\n\n /**\n * When true, elements will be removed from DOM and discarded when `if`\n * becomes false and re-created and added back to the DOM when `if`\n * becomes true. By default, stamped elements will be hidden but left\n * in the DOM when `if` becomes false, which is generally results\n * in better performance.\n */\n restamp: {\n type: Boolean,\n observer: '__debounceRender'\n }\n\n };\n\n }\n\n constructor() {\n super();\n this.__renderDebouncer = null;\n this.__invalidProps = null;\n this.__instance = null;\n this._lastIf = false;\n this.__ctor = null;\n this.__hideTemplateChildren__ = false;\n }\n\n __debounceRender() {\n // Render is async for 2 reasons:\n // 1. To eliminate dom creation trashing if user code thrashes `if` in the\n // same turn. This was more common in 1.x where a compound computed\n // property could result in the result changing multiple times, but is\n // mitigated to a large extent by batched property processing in 2.x.\n // 2. To avoid double object propagation when a bag including values bound\n // to the `if` property as well as one or more hostProps could enqueue\n // the to flush before the 's host property\n // forwarding. In that scenario creating an instance would result in\n // the host props being set once, and then the enqueued changes on the\n // template would set properties a second time, potentially causing an\n // object to be set to an instance more than once. Creating the\n // instance async from flushing data ensures this doesn't happen. If\n // we wanted a sync option in the future, simply having flush\n // (or clear) its template's pending host properties before creating\n // the instance would also avoid the problem.\n this.__renderDebouncer = Debouncer.debounce(\n this.__renderDebouncer\n , microTask\n , () => this.__render());\n enqueueDebouncer(this.__renderDebouncer);\n }\n\n /**\n * @override\n * @return {void}\n */\n disconnectedCallback() {\n super.disconnectedCallback();\n if (!this.parentNode ||\n (this.parentNode.nodeType == Node.DOCUMENT_FRAGMENT_NODE &&\n !this.parentNode.host)) {\n this.__teardownInstance();\n }\n }\n\n /**\n * @override\n * @return {void}\n */\n connectedCallback() {\n super.connectedCallback();\n this.style.display = 'none';\n if (this.if) {\n this.__debounceRender();\n }\n }\n\n /**\n * Forces the element to render its content. Normally rendering is\n * asynchronous to a provoking change. This is done for efficiency so\n * that multiple changes trigger only a single render. The render method\n * should be called if, for example, template rendering is required to\n * validate application state.\n * @return {void}\n */\n render() {\n flush();\n }\n\n __render() {\n if (this.if) {\n if (!this.__ensureInstance()) {\n // No template found yet\n return;\n }\n this._showHideChildren();\n } else if (this.restamp) {\n this.__teardownInstance();\n }\n if (!this.restamp && this.__instance) {\n this._showHideChildren();\n }\n if (this.if != this._lastIf) {\n this.dispatchEvent(new CustomEvent('dom-change', {\n bubbles: true,\n composed: true\n }));\n this._lastIf = this.if;\n }\n }\n\n __ensureInstance() {\n let parentNode = this.parentNode;\n // Guard against element being detached while render was queued\n if (parentNode) {\n if (!this.__ctor) {\n let template = /** @type {HTMLTemplateElement} */(this.querySelector('template'));\n if (!template) {\n // Wait until childList changes and template should be there by then\n let observer = new MutationObserver(() => {\n if (this.querySelector('template')) {\n observer.disconnect();\n this.__render();\n } else {\n throw new Error('dom-if requires a child');\n }\n });\n observer.observe(this, {childList: true});\n return false;\n }\n this.__ctor = templatize(template, this, {\n // dom-if templatizer instances require `mutable: true`, as\n // `__syncHostProperties` relies on that behavior to sync objects\n mutableData: true,\n /**\n * @param {string} prop Property to forward\n * @param {*} value Value of property\n * @this {DomIf}\n */\n forwardHostProp: function(prop, value) {\n if (this.__instance) {\n if (this.if) {\n this.__instance.forwardHostProp(prop, value);\n } else {\n // If we have an instance but are squelching host property\n // forwarding due to if being false, note the invalidated\n // properties so `__syncHostProperties` can sync them the next\n // time `if` becomes true\n this.__invalidProps = this.__invalidProps || Object.create(null);\n this.__invalidProps[root(prop)] = true;\n }\n }\n }\n });\n }\n if (!this.__instance) {\n this.__instance = new this.__ctor();\n parentNode.insertBefore(this.__instance.root, this);\n } else {\n this.__syncHostProperties();\n let c$ = this.__instance.children;\n if (c$ && c$.length) {\n // Detect case where dom-if was re-attached in new position\n let lastChild = this.previousSibling;\n if (lastChild !== c$[c$.length-1]) {\n for (let i=0, n; (i {\n\n /**\n * @constructor\n * @extends {superClass}\n * @implements {Polymer_ElementMixin}\n * @private\n */\n let elementBase = ElementMixin(superClass);\n\n /**\n * @polymer\n * @mixinClass\n * @implements {Polymer_ArraySelectorMixin}\n * @unrestricted\n */\n class ArraySelectorMixin extends elementBase {\n\n static get properties() {\n\n return {\n\n /**\n * An array containing items from which selection will be made.\n */\n items: {\n type: Array,\n },\n\n /**\n * When `true`, multiple items may be selected at once (in this case,\n * `selected` is an array of currently selected items). When `false`,\n * only one item may be selected at a time.\n */\n multi: {\n type: Boolean,\n value: false,\n },\n\n /**\n * When `multi` is true, this is an array that contains any selected.\n * When `multi` is false, this is the currently selected item, or `null`\n * if no item is selected.\n * @type {?(Object|Array)}\n */\n selected: {\n type: Object,\n notify: true\n },\n\n /**\n * When `multi` is false, this is the currently selected item, or `null`\n * if no item is selected.\n * @type {?Object}\n */\n selectedItem: {\n type: Object,\n notify: true\n },\n\n /**\n * When `true`, calling `select` on an item that is already selected\n * will deselect the item.\n */\n toggle: {\n type: Boolean,\n value: false\n }\n\n };\n }\n\n static get observers() {\n return ['__updateSelection(multi, items.*)'];\n }\n\n constructor() {\n super();\n this.__lastItems = null;\n this.__lastMulti = null;\n this.__selectedMap = null;\n }\n\n __updateSelection(multi, itemsInfo) {\n let path = itemsInfo.path;\n if (path == 'items') {\n // Case 1 - items array changed, so diff against previous array and\n // deselect any removed items and adjust selected indices\n let newItems = itemsInfo.base || [];\n let lastItems = this.__lastItems;\n let lastMulti = this.__lastMulti;\n if (multi !== lastMulti) {\n this.clearSelection();\n }\n if (lastItems) {\n let splices = calculateSplices(newItems, lastItems);\n this.__applySplices(splices);\n }\n this.__lastItems = newItems;\n this.__lastMulti = multi;\n } else if (itemsInfo.path == 'items.splices') {\n // Case 2 - got specific splice information describing the array mutation:\n // deselect any removed items and adjust selected indices\n this.__applySplices(itemsInfo.value.indexSplices);\n } else {\n // Case 3 - an array element was changed, so deselect the previous\n // item for that index if it was previously selected\n let part = path.slice('items.'.length);\n let idx = parseInt(part, 10);\n if ((part.indexOf('.') < 0) && part == idx) {\n this.__deselectChangedIdx(idx);\n }\n }\n }\n\n __applySplices(splices) {\n let selected = this.__selectedMap;\n // Adjust selected indices and mark removals\n for (let i=0; i {\n if (idx < s.index) {\n // no change\n } else if (idx >= s.index + s.removed.length) {\n // adjust index\n selected.set(item, idx + s.addedCount - s.removed.length);\n } else {\n // remove index\n selected.set(item, -1);\n }\n });\n for (let j=0; j {\n if (idx < 0) {\n if (this.multi) {\n this.splice('selected', sidx, 1);\n } else {\n this.selected = this.selectedItem = null;\n }\n selected.delete(item);\n } else {\n sidx++;\n }\n });\n }\n\n __updateLinks() {\n this.__dataLinkedPaths = {};\n if (this.multi) {\n let sidx = 0;\n this.__selectedMap.forEach(idx => {\n if (idx >= 0) {\n this.linkPaths('items.' + idx, 'selected.' + sidx++);\n }\n });\n } else {\n this.__selectedMap.forEach(idx => {\n this.linkPaths('selected', 'items.' + idx);\n this.linkPaths('selectedItem', 'items.' + idx);\n });\n }\n }\n\n /**\n * Clears the selection state.\n * @return {void}\n */\n clearSelection() {\n // Unbind previous selection\n this.__dataLinkedPaths = {};\n // The selected map stores 3 pieces of information:\n // key: items array object\n // value: items array index\n // order: selected array index\n this.__selectedMap = new Map();\n // Initialize selection\n this.selected = this.multi ? [] : null;\n this.selectedItem = null;\n }\n\n /**\n * Returns whether the item is currently selected.\n *\n * @param {*} item Item from `items` array to test\n * @return {boolean} Whether the item is selected\n */\n isSelected(item) {\n return this.__selectedMap.has(item);\n }\n\n /**\n * Returns whether the item is currently selected.\n *\n * @param {number} idx Index from `items` array to test\n * @return {boolean} Whether the item is selected\n */\n isIndexSelected(idx) {\n return this.isSelected(this.items[idx]);\n }\n\n __deselectChangedIdx(idx) {\n let sidx = this.__selectedIndexForItemIndex(idx);\n if (sidx >= 0) {\n let i = 0;\n this.__selectedMap.forEach((idx, item) => {\n if (sidx == i++) {\n this.deselect(item);\n }\n });\n }\n }\n\n __selectedIndexForItemIndex(idx) {\n let selected = this.__dataLinkedPaths['items.' + idx];\n if (selected) {\n return parseInt(selected.slice('selected.'.length), 10);\n }\n }\n\n /**\n * Deselects the given item if it is already selected.\n *\n * @param {*} item Item from `items` array to deselect\n * @return {void}\n */\n deselect(item) {\n let idx = this.__selectedMap.get(item);\n if (idx >= 0) {\n this.__selectedMap.delete(item);\n let sidx;\n if (this.multi) {\n sidx = this.__selectedIndexForItemIndex(idx);\n }\n this.__updateLinks();\n if (this.multi) {\n this.splice('selected', sidx, 1);\n } else {\n this.selected = this.selectedItem = null;\n }\n }\n }\n\n /**\n * Deselects the given index if it is already selected.\n *\n * @param {number} idx Index from `items` array to deselect\n * @return {void}\n */\n deselectIndex(idx) {\n this.deselect(this.items[idx]);\n }\n\n /**\n * Selects the given item. When `toggle` is true, this will automatically\n * deselect the item if already selected.\n *\n * @param {*} item Item from `items` array to select\n * @return {void}\n */\n select(item) {\n this.selectIndex(this.items.indexOf(item));\n }\n\n /**\n * Selects the given index. When `toggle` is true, this will automatically\n * deselect the item if already selected.\n *\n * @param {number} idx Index from `items` array to select\n * @return {void}\n */\n selectIndex(idx) {\n let item = this.items[idx];\n if (!this.isSelected(item)) {\n if (!this.multi) {\n this.__selectedMap.clear();\n }\n this.__selectedMap.set(item, idx);\n this.__updateLinks();\n if (this.multi) {\n this.push('selected', item);\n } else {\n this.selected = this.selectedItem = item;\n }\n } else if (this.toggle) {\n this.deselectIndex(idx);\n }\n }\n\n }\n\n return ArraySelectorMixin;\n\n});\n\n// export mixin\nexport { ArraySelectorMixin };\n\n/**\n * @constructor\n * @extends {PolymerElement}\n * @implements {Polymer_ArraySelectorMixin}\n * @private\n */\nlet baseArraySelector = ArraySelectorMixin(PolymerElement);\n\n/**\n * Element implementing the `ArraySelector` mixin, which records\n * dynamic associations between item paths in a master `items` array and a\n * `selected` array such that path changes to the master array (at the host)\n * element or elsewhere via data-binding) are correctly propagated to items\n * in the selected array and vice-versa.\n *\n * The `items` property accepts an array of user data, and via the\n * `select(item)` and `deselect(item)` API, updates the `selected` property\n * which may be bound to other parts of the application, and any changes to\n * sub-fields of `selected` item(s) will be kept in sync with items in the\n * `items` array. When `multi` is false, `selected` is a property\n * representing the last selected item. When `multi` is true, `selected`\n * is an array of multiply selected items.\n *\n * Example:\n *\n * ```js\n * import {PolymerElement} from '@polymer/polymer';\n * import '@polymer/polymer/lib/elements/array-selector.js';\n *\n * class EmployeeList extends PolymerElement {\n * static get _template() {\n * return html`\n * Employee list: \n * \n * \n * First name: {{item.first}}\n * Last name: {{item.last}}\n * \n * \n * \n *\n * \n * \n * First name: {{item.first}}\n * Last name: {{item.last}}\n * \n * `;\n * }\n * static get is() { return 'employee-list'; }\n * static get properties() {\n * return {\n * employees: {\n * value() {\n * return [\n * {first: 'Bob', last: 'Smith'},\n * {first: 'Sally', last: 'Johnson'},\n * ...\n * ];\n * }\n * }\n * };\n * }\n * toggleSelection(e) {\n * const item = this.$.employeeList.itemForElement(e.target);\n * this.$.selector.select(item);\n * }\n * }\n * ```\n *\n * @polymer\n * @customElement\n * @extends {baseArraySelector}\n * @appliesMixin ArraySelectorMixin\n * @summary Custom element that links paths between an input `items` array and\n * an output `selected` item or array based on calls to its selection API.\n */\nclass ArraySelector extends baseArraySelector {\n // Not needed to find template; can be removed once the analyzer\n // can find the tag name from customElements.define call\n static get is() { return 'array-selector'; }\n}\ncustomElements.define(ArraySelector.is, ArraySelector);\nexport { ArraySelector };\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport { MutableData } from '../mixins/mutable-data.js';\n\nlet mutablePropertyChange;\n/** @suppress {missingProperties} */\n(() => {\n mutablePropertyChange = MutableData._mutablePropertyChange;\n})();\n\n/**\n * Legacy element behavior to skip strict dirty-checking for objects and arrays,\n * (always consider them to be \"dirty\") for use on legacy API Polymer elements.\n *\n * By default, `Polymer.PropertyEffects` performs strict dirty checking on\n * objects, which means that any deep modifications to an object or array will\n * not be propagated unless \"immutable\" data patterns are used (i.e. all object\n * references from the root to the mutation were changed).\n *\n * Polymer also provides a proprietary data mutation and path notification API\n * (e.g. `notifyPath`, `set`, and array mutation API's) that allow efficient\n * mutation and notification of deep changes in an object graph to all elements\n * bound to the same object graph.\n *\n * In cases where neither immutable patterns nor the data mutation API can be\n * used, applying this mixin will cause Polymer to skip dirty checking for\n * objects and arrays (always consider them to be \"dirty\"). This allows a\n * user to make a deep modification to a bound object graph, and then either\n * simply re-set the object (e.g. `this.items = this.items`) or call `notifyPath`\n * (e.g. `this.notifyPath('items')`) to update the tree. Note that all\n * elements that wish to be updated based on deep mutations must apply this\n * mixin or otherwise skip strict dirty checking for objects/arrays.\n * Specifically, any elements in the binding tree between the source of a\n * mutation and the consumption of it must apply this behavior or enable the\n * `Polymer.OptionalMutableDataBehavior`.\n *\n * In order to make the dirty check strategy configurable, see\n * `Polymer.OptionalMutableDataBehavior`.\n *\n * Note, the performance characteristics of propagating large object graphs\n * will be worse as opposed to using strict dirty checking with immutable\n * patterns or Polymer's path notification API.\n *\n * @polymerBehavior\n * @summary Behavior to skip strict dirty-checking for objects and\n * arrays\n */\nexport const MutableDataBehavior = {\n\n /**\n * Overrides `Polymer.PropertyEffects` to provide option for skipping\n * strict equality checking for Objects and Arrays.\n *\n * This method pulls the value to dirty check against from the `__dataTemp`\n * cache (rather than the normal `__data` cache) for Objects. Since the temp\n * cache is cleared at the end of a turn, this implementation allows\n * side-effects of deep object changes to be processed by re-setting the\n * same object (using the temp cache as an in-turn backstop to prevent\n * cycles due to 2-way notification).\n *\n * @param {string} property Property name\n * @param {*} value New property value\n * @param {*} old Previous property value\n * @return {boolean} Whether the property should be considered a change\n * @protected\n */\n _shouldPropertyChange(property, value, old) {\n return mutablePropertyChange(this, property, value, old, true);\n }\n};\n\n/**\n * Legacy element behavior to add the optional ability to skip strict\n * dirty-checking for objects and arrays (always consider them to be\n * \"dirty\") by setting a `mutable-data` attribute on an element instance.\n *\n * By default, `Polymer.PropertyEffects` performs strict dirty checking on\n * objects, which means that any deep modifications to an object or array will\n * not be propagated unless \"immutable\" data patterns are used (i.e. all object\n * references from the root to the mutation were changed).\n *\n * Polymer also provides a proprietary data mutation and path notification API\n * (e.g. `notifyPath`, `set`, and array mutation API's) that allow efficient\n * mutation and notification of deep changes in an object graph to all elements\n * bound to the same object graph.\n *\n * In cases where neither immutable patterns nor the data mutation API can be\n * used, applying this mixin will allow Polymer to skip dirty checking for\n * objects and arrays (always consider them to be \"dirty\"). This allows a\n * user to make a deep modification to a bound object graph, and then either\n * simply re-set the object (e.g. `this.items = this.items`) or call `notifyPath`\n * (e.g. `this.notifyPath('items')`) to update the tree. Note that all\n * elements that wish to be updated based on deep mutations must apply this\n * mixin or otherwise skip strict dirty checking for objects/arrays.\n * Specifically, any elements in the binding tree between the source of a\n * mutation and the consumption of it must enable this behavior or apply the\n * `Polymer.OptionalMutableDataBehavior`.\n *\n * While this behavior adds the ability to forgo Object/Array dirty checking,\n * the `mutableData` flag defaults to false and must be set on the instance.\n *\n * Note, the performance characteristics of propagating large object graphs\n * will be worse by relying on `mutableData: true` as opposed to using\n * strict dirty checking with immutable patterns or Polymer's path notification\n * API.\n *\n * @polymerBehavior\n * @summary Behavior to optionally skip strict dirty-checking for objects and\n * arrays\n */\nexport const OptionalMutableDataBehavior = {\n\n properties: {\n /**\n * Instance-level flag for configuring the dirty-checking strategy\n * for this element. When true, Objects and Arrays will skip dirty\n * checking, otherwise strict equality checking will be used.\n */\n mutableData: Boolean\n },\n\n /**\n * Overrides `Polymer.PropertyEffects` to skip strict equality checking\n * for Objects and Arrays.\n *\n * Pulls the value to dirty check against from the `__dataTemp` cache\n * (rather than the normal `__data` cache) for Objects. Since the temp\n * cache is cleared at the end of a turn, this implementation allows\n * side-effects of deep object changes to be processed by re-setting the\n * same object (using the temp cache as an in-turn backstop to prevent\n * cycles due to 2-way notification).\n *\n * @param {string} property Property name\n * @param {*} value New property value\n * @param {*} old Previous property value\n * @return {boolean} Whether the property should be considered a change\n * @this {this}\n * @protected\n */\n _shouldPropertyChange(property, value, old) {\n return mutablePropertyChange(this, property, value, old, this.mutableData);\n }\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nimport { LegacyElementMixin } from './lib/legacy/legacy-element-mixin.js';\nexport { Polymer } from './lib/legacy/polymer-fn.js';\n/* template elements */\nimport './lib/legacy/templatizer-behavior.js';\nimport './lib/elements/dom-bind.js';\nimport './lib/elements/dom-repeat.js';\nimport './lib/elements/dom-if.js';\nimport './lib/elements/array-selector.js';\n/* custom-style */\nimport './lib/elements/custom-style.js';\n/* bc behaviors */\nimport './lib/legacy/mutable-data-behavior.js';\n/* import html-tag to export html */\nexport { html } from './lib/utils/html-tag.js';\n\n// bc\nexport const Base = LegacyElementMixin(HTMLElement).prototype;\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\n/**\n * Class representing a static string value which can be used to filter\n * strings by asseting that they have been created via this class. The\n * `value` property returns the string passed to the constructor.\n */\nclass LiteralString {\n constructor(string) {\n /** @type {string} */\n this.value = string.toString();\n }\n /**\n * @return {string} LiteralString string value\n * @override\n */\n toString() {\n return this.value;\n }\n}\n\n/**\n * @param {*} value Object to stringify into HTML\n * @return {string} HTML stringified form of `obj`\n */\nfunction literalValue(value) {\n if (value instanceof LiteralString) {\n return /** @type {!LiteralString} */(value).value;\n } else {\n throw new Error(\n `non-literal value passed to Polymer's htmlLiteral function: ${value}`\n );\n }\n}\n\n/**\n * @param {*} value Object to stringify into HTML\n * @return {string} HTML stringified form of `obj`\n */\nfunction htmlValue(value) {\n if (value instanceof HTMLTemplateElement) {\n return /** @type {!HTMLTemplateElement } */(value).innerHTML;\n } else if (value instanceof LiteralString) {\n return literalValue(value);\n } else {\n throw new Error(\n `non-template value passed to Polymer's html function: ${value}`);\n }\n}\n\n/**\n * A template literal tag that creates an HTML element from the\n * contents of the string.\n *\n * This allows you to write a Polymer Template in JavaScript.\n *\n * Templates can be composed by interpolating `HTMLTemplateElement`s in\n * expressions in the JavaScript template literal. The nested template's\n * `innerHTML` is included in the containing template. The only other\n * values allowed in expressions are those returned from `htmlLiteral`\n * which ensures only literal values from JS source ever reach the HTML, to\n * guard against XSS risks.\n *\n * All other values are disallowed in expressions to help prevent XSS\n * attacks; however, `htmlLiteral` can be used to compose static\n * string values into templates. This is useful to compose strings into\n * places that do not accept html, like the css text of a `style`\n * element.\n *\n * Example:\n *\n * static get template() {\n * return html`\n * \n * ${this.partialTemplate}\n * ${super.template}\n * `;\n * }\n * static get partialTemplate() { return html`Partial!`; }\n *\n * @param {!ITemplateArray} strings Constant parts of tagged template literal\n * @param {...*} values Variable parts of tagged template literal\n * @return {!HTMLTemplateElement} Constructed HTMLTemplateElement\n */\nexport const html = function html(strings, ...values) {\n const template = /** @type {!HTMLTemplateElement} */(document.createElement('template'));\n template.innerHTML = values.reduce((acc, v, idx) =>\n acc + htmlValue(v) + strings[idx + 1], strings[0]);\n return template;\n};\n\n/**\n * An html literal tag that can be used with `html` to compose.\n * a literal string.\n *\n * Example:\n *\n * static get template() {\n * return html`\n * \n * ${staticValue}\n * ${super.template}\n * `;\n * }\n * static get styleTemplate() {\n * return htmlLiteral`.shadowed { background: gray; }`;\n * }\n *\n * @param {!ITemplateArray} strings Constant parts of tagged template literal\n * @param {...*} values Variable parts of tagged template literal\n * @return {!LiteralString} Constructed literal string\n */\nexport const htmlLiteral = function(strings, ...values) {\n return new LiteralString(values.reduce((acc, v, idx) =>\n acc + literalValue(v) + strings[idx + 1], strings[0]));\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport { Class } from './class.js';\n\nimport '../utils/boot.js';\n\n/**\n * Legacy class factory and registration helper for defining Polymer\n * elements.\n *\n * This method is equivalent to\n *\n * import {Class} from '@polymer/polymer/lib/legacy/class.js';\n * customElements.define(info.is, Class(info));\n *\n * See `Class` for details on valid legacy metadata format for `info`.\n *\n * @global\n * @override\n * @function\n * @param {!PolymerInit} info Object containing Polymer metadata and functions\n * to become class methods.\n * @return {function(new: HTMLElement)} Generated class\n * @suppress {duplicate, invalidCasts, checkTypes}\n */\nconst Polymer = function(info) {\n // if input is a `class` (aka a function with a prototype), use the prototype\n // remember that the `constructor` will never be called\n let klass;\n if (typeof info === 'function') {\n klass = info;\n } else {\n klass = Polymer.Class(info);\n }\n customElements.define(klass.is, /** @type {!HTMLElement} */(klass));\n return klass;\n};\n\nPolymer.Class = Class;\n\nexport { Polymer };","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nimport { calculateSplices } from './array-splice.js';\nimport { microTask } from './async.js';\n\n/**\n * Returns true if `node` is a slot element\n * @param {!Node} node Node to test.\n * @return {boolean} Returns true if the given `node` is a slot\n * @private\n */\nfunction isSlot(node) {\n return (node.localName === 'slot');\n}\n\n/**\n * Class that listens for changes (additions or removals) to\n * \"flattened nodes\" on a given `node`. The list of flattened nodes consists\n * of a node's children and, for any children that are `` elements,\n * the expanded flattened list of `assignedNodes`.\n * For example, if the observed node has children `` has one `` assigned to it, then the flattened\n * nodes list is ``. If the `` has other\n * `` elements assigned to it, these are flattened as well.\n *\n * The provided `callback` is called whenever any change to this list\n * of flattened nodes occurs, where an addition or removal of a node is\n * considered a change. The `callback` is called with one argument, an object\n * containing an array of any `addedNodes` and `removedNodes`.\n *\n * Note: the callback is called asynchronous to any changes\n * at a microtask checkpoint. This is because observation is performed using\n * `MutationObserver` and the `` element's `slotchange` event which\n * are asynchronous.\n *\n * An example:\n * ```js\n * class TestSelfObserve extends PolymerElement {\n * static get is() { return 'test-self-observe';}\n * connectedCallback() {\n * super.connectedCallback();\n * this._observer = new FlattenedNodesObserver(this, (info) => {\n * this.info = info;\n * });\n * }\n * disconnectedCallback() {\n * super.disconnectedCallback();\n * this._observer.disconnect();\n * }\n * }\n * customElements.define(TestSelfObserve.is, TestSelfObserve);\n * ```\n *\n * @summary Class that listens for changes (additions or removals) to\n * \"flattened nodes\" on a given `node`.\n */\nexport class FlattenedNodesObserver {\n\n /**\n * Returns the list of flattened nodes for the given `node`.\n * This list consists of a node's children and, for any children\n * that are `` elements, the expanded flattened list of `assignedNodes`.\n * For example, if the observed node has children `` has one `` assigned to it, then the flattened\n * nodes list is ``. If the `` has other\n * `` elements assigned to it, these are flattened as well.\n *\n * @param {!HTMLElement|!HTMLSlotElement} node The node for which to\n * return the list of flattened nodes.\n * @return {!Array} The list of flattened nodes for the given `node`.\n * @nocollapse See https://github.com/google/closure-compiler/issues/2763\n */\n static getFlattenedNodes(node) {\n if (isSlot(node)) {\n node = /** @type {!HTMLSlotElement} */(node); // eslint-disable-line no-self-assign\n return node.assignedNodes({flatten: true});\n } else {\n return Array.from(node.childNodes).map((node) => {\n if (isSlot(node)) {\n node = /** @type {!HTMLSlotElement} */(node); // eslint-disable-line no-self-assign\n return node.assignedNodes({flatten: true});\n } else {\n return [node];\n }\n }).reduce((a, b) => a.concat(b), []);\n }\n }\n\n /**\n * @param {!HTMLElement} target Node on which to listen for changes.\n * @param {?function(this: Element, { target: !HTMLElement, addedNodes: !Array, removedNodes: !Array }):void} callback Function called when there are additions\n * or removals from the target's list of flattened nodes.\n */\n constructor(target, callback) {\n /**\n * @type {MutationObserver}\n * @private\n */\n this._shadyChildrenObserver = null;\n /**\n * @type {MutationObserver}\n * @private\n */\n this._nativeChildrenObserver = null;\n this._connected = false;\n /**\n * @type {!HTMLElement}\n * @private\n */\n this._target = target;\n this.callback = callback;\n this._effectiveNodes = [];\n this._observer = null;\n this._scheduled = false;\n /**\n * @type {function()}\n * @private\n */\n this._boundSchedule = () => {\n this._schedule();\n };\n this.connect();\n this._schedule();\n }\n\n /**\n * Activates an observer. This method is automatically called when\n * a `FlattenedNodesObserver` is created. It should only be called to\n * re-activate an observer that has been deactivated via the `disconnect` method.\n *\n * @return {void}\n */\n connect() {\n if (isSlot(this._target)) {\n this._listenSlots([this._target]);\n } else if (this._target.children) {\n this._listenSlots(\n /** @type {!NodeList} */ (this._target.children));\n if (window.ShadyDOM) {\n this._shadyChildrenObserver =\n ShadyDOM.observeChildren(this._target, (mutations) => {\n this._processMutations(mutations);\n });\n } else {\n this._nativeChildrenObserver =\n new MutationObserver((mutations) => {\n this._processMutations(mutations);\n });\n this._nativeChildrenObserver.observe(this._target, {childList: true});\n }\n }\n this._connected = true;\n }\n\n /**\n * Deactivates the flattened nodes observer. After calling this method\n * the observer callback will not be called when changes to flattened nodes\n * occur. The `connect` method may be subsequently called to reactivate\n * the observer.\n *\n * @return {void}\n */\n disconnect() {\n if (isSlot(this._target)) {\n this._unlistenSlots([this._target]);\n } else if (this._target.children) {\n this._unlistenSlots(\n /** @type {!NodeList} */ (this._target.children));\n if (window.ShadyDOM && this._shadyChildrenObserver) {\n ShadyDOM.unobserveChildren(this._shadyChildrenObserver);\n this._shadyChildrenObserver = null;\n } else if (this._nativeChildrenObserver) {\n this._nativeChildrenObserver.disconnect();\n this._nativeChildrenObserver = null;\n }\n }\n this._connected = false;\n }\n\n /**\n * @return {void}\n * @private\n */\n _schedule() {\n if (!this._scheduled) {\n this._scheduled = true;\n microTask.run(() => this.flush());\n }\n }\n\n /**\n * @param {Array} mutations Mutations signaled by the mutation observer\n * @return {void}\n * @private\n */\n _processMutations(mutations) {\n this._processSlotMutations(mutations);\n this.flush();\n }\n\n /**\n * @param {Array} mutations Mutations signaled by the mutation observer\n * @return {void}\n * @private\n */\n _processSlotMutations(mutations) {\n if (mutations) {\n for (let i=0; i < mutations.length; i++) {\n let mutation = mutations[i];\n if (mutation.addedNodes) {\n this._listenSlots(mutation.addedNodes);\n }\n if (mutation.removedNodes) {\n this._unlistenSlots(mutation.removedNodes);\n }\n }\n }\n }\n\n /**\n * Flushes the observer causing any pending changes to be immediately\n * delivered the observer callback. By default these changes are delivered\n * asynchronously at the next microtask checkpoint.\n *\n * @return {boolean} Returns true if any pending changes caused the observer\n * callback to run.\n */\n flush() {\n if (!this._connected) {\n return false;\n }\n if (window.ShadyDOM) {\n ShadyDOM.flush();\n }\n if (this._nativeChildrenObserver) {\n this._processSlotMutations(this._nativeChildrenObserver.takeRecords());\n } else if (this._shadyChildrenObserver) {\n this._processSlotMutations(this._shadyChildrenObserver.takeRecords());\n }\n this._scheduled = false;\n let info = {\n target: this._target,\n addedNodes: [],\n removedNodes: []\n };\n let newNodes = this.constructor.getFlattenedNodes(this._target);\n let splices = calculateSplices(newNodes,\n this._effectiveNodes);\n // process removals\n for (let i=0, s; (i|!NodeList} nodeList Nodes that could change\n * @return {void}\n * @private\n */\n _listenSlots(nodeList) {\n for (let i=0; i < nodeList.length; i++) {\n let n = nodeList[i];\n if (isSlot(n)) {\n n.addEventListener('slotchange', this._boundSchedule);\n }\n }\n }\n\n /**\n * @param {!Array|!NodeList} nodeList Nodes that could change\n * @return {void}\n * @private\n */\n _unlistenSlots(nodeList) {\n for (let i=0; i < nodeList.length; i++) {\n let n = nodeList[i];\n if (isSlot(n)) {\n n.removeEventListener('slotchange', this._boundSchedule);\n }\n }\n }\n\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport '../utils/settings.js';\nimport { FlattenedNodesObserver } from '../utils/flattened-nodes-observer.js';\nexport { flush, enqueueDebouncer as addDebouncer } from '../utils/flush.js';\n/* eslint-disable no-unused-vars */\nimport { Debouncer } from '../utils/debounce.js'; // used in type annotations\n/* eslint-enable no-unused-vars */\n\nconst p = Element.prototype;\n/**\n * @const {function(this:Node, string): boolean}\n */\nconst normalizedMatchesSelector = p.matches || p.matchesSelector ||\n p.mozMatchesSelector || p.msMatchesSelector ||\n p.oMatchesSelector || p.webkitMatchesSelector;\n\n/**\n * Cross-platform `element.matches` shim.\n *\n * @function matchesSelector\n * @param {!Node} node Node to check selector against\n * @param {string} selector Selector to match\n * @return {boolean} True if node matched selector\n */\nexport const matchesSelector = function(node, selector) {\n return normalizedMatchesSelector.call(node, selector);\n};\n\n/**\n * Node API wrapper class returned from `Polymer.dom.(target)` when\n * `target` is a `Node`.\n *\n */\nexport class DomApi {\n\n /**\n * @param {Node} node Node for which to create a Polymer.dom helper object.\n */\n constructor(node) {\n this.node = node;\n }\n\n /**\n * Returns an instance of `FlattenedNodesObserver` that\n * listens for node changes on this element.\n *\n * @param {function(this:HTMLElement, { target: !HTMLElement, addedNodes: !Array, removedNodes: !Array }):void} callback Called when direct or distributed children\n * of this element changes\n * @return {!FlattenedNodesObserver} Observer instance\n */\n observeNodes(callback) {\n return new FlattenedNodesObserver(\n /** @type {!HTMLElement} */(this.node), callback);\n }\n\n /**\n * Disconnects an observer previously created via `observeNodes`\n *\n * @param {!FlattenedNodesObserver} observerHandle Observer instance\n * to disconnect.\n * @return {void}\n */\n unobserveNodes(observerHandle) {\n observerHandle.disconnect();\n }\n\n /**\n * Provided as a backwards-compatible API only. This method does nothing.\n * @return {void}\n */\n notifyObserver() {}\n\n /**\n * Returns true if the provided node is contained with this element's\n * light-DOM children or shadow root, including any nested shadow roots\n * of children therein.\n *\n * @param {Node} node Node to test\n * @return {boolean} Returns true if the given `node` is contained within\n * this element's light or shadow DOM.\n */\n deepContains(node) {\n if (this.node.contains(node)) {\n return true;\n }\n let n = node;\n let doc = node.ownerDocument;\n // walk from node to `this` or `document`\n while (n && n !== doc && n !== this.node) {\n // use logical parentnode, or native ShadowRoot host\n n = n.parentNode || n.host;\n }\n return n === this.node;\n }\n\n /**\n * Returns the root node of this node. Equivalent to `getRootNode()`.\n *\n * @return {Node} Top most element in the dom tree in which the node\n * exists. If the node is connected to a document this is either a\n * shadowRoot or the document; otherwise, it may be the node\n * itself or a node or document fragment containing it.\n */\n getOwnerRoot() {\n return this.node.getRootNode();\n }\n\n /**\n * For slot elements, returns the nodes assigned to the slot; otherwise\n * an empty array. It is equivalent to `.addignedNodes({flatten:true})`.\n *\n * @return {!Array} Array of assigned nodes\n */\n getDistributedNodes() {\n return (this.node.localName === 'slot') ?\n this.node.assignedNodes({flatten: true}) :\n [];\n }\n\n /**\n * Returns an array of all slots this element was distributed to.\n *\n * @return {!Array} Description\n */\n getDestinationInsertionPoints() {\n let ip$ = [];\n let n = this.node.assignedSlot;\n while (n) {\n ip$.push(n);\n n = n.assignedSlot;\n }\n return ip$;\n }\n\n /**\n * Calls `importNode` on the `ownerDocument` for this node.\n *\n * @param {!Node} node Node to import\n * @param {boolean} deep True if the node should be cloned deeply during\n * import\n * @return {Node} Clone of given node imported to this owner document\n */\n importNode(node, deep) {\n let doc = this.node instanceof Document ? this.node :\n this.node.ownerDocument;\n return doc.importNode(node, deep);\n }\n\n /**\n * @return {!Array} Returns a flattened list of all child nodes and\n * nodes assigned to child slots.\n */\n getEffectiveChildNodes() {\n return FlattenedNodesObserver.getFlattenedNodes(\n /** @type {!HTMLElement} */ (this.node));\n }\n\n /**\n * Returns a filtered list of flattened child elements for this element based\n * on the given selector.\n *\n * @param {string} selector Selector to filter nodes against\n * @return {!Array} List of flattened child elements\n */\n queryDistributedElements(selector) {\n let c$ = this.getEffectiveChildNodes();\n let list = [];\n for (let i=0, l=c$.length, c; (i} The nodes this event propagated through\n */\n get path() {\n return this.event.composedPath();\n }\n}\n\n/**\n * @function\n * @param {boolean=} deep\n * @return {!Node}\n */\nDomApi.prototype.cloneNode;\n/**\n * @function\n * @param {!Node} node\n * @return {!Node}\n */\nDomApi.prototype.appendChild;\n/**\n * @function\n * @param {!Node} newChild\n * @param {Node} refChild\n * @return {!Node}\n */\nDomApi.prototype.insertBefore;\n/**\n * @function\n * @param {!Node} node\n * @return {!Node}\n */\nDomApi.prototype.removeChild;\n/**\n * @function\n * @param {!Node} oldChild\n * @param {!Node} newChild\n * @return {!Node}\n */\nDomApi.prototype.replaceChild;\n/**\n * @function\n * @param {string} name\n * @param {string} value\n * @return {void}\n */\nDomApi.prototype.setAttribute;\n/**\n * @function\n * @param {string} name\n * @return {void}\n */\nDomApi.prototype.removeAttribute;\n/**\n * @function\n * @param {string} selector\n * @return {?Element}\n */\nDomApi.prototype.querySelector;\n/**\n * @function\n * @param {string} selector\n * @return {!NodeList}\n */\nDomApi.prototype.querySelectorAll;\n\n/** @type {?Node} */\nDomApi.prototype.parentNode;\n/** @type {?Node} */\nDomApi.prototype.firstChild;\n/** @type {?Node} */\nDomApi.prototype.lastChild;\n/** @type {?Node} */\nDomApi.prototype.nextSibling;\n/** @type {?Node} */\nDomApi.prototype.previousSibling;\n/** @type {?HTMLElement} */\nDomApi.prototype.firstElementChild;\n/** @type {?HTMLElement} */\nDomApi.prototype.lastElementChild;\n/** @type {?HTMLElement} */\nDomApi.prototype.nextElementSibling;\n/** @type {?HTMLElement} */\nDomApi.prototype.previousElementSibling;\n/** @type {!Array} */\nDomApi.prototype.childNodes;\n/** @type {!Array} */\nDomApi.prototype.children;\n/** @type {?DOMTokenList} */\nDomApi.prototype.classList;\n\n/** @type {string} */\nDomApi.prototype.textContent;\n/** @type {string} */\nDomApi.prototype.innerHTML;\n\nforwardMethods(DomApi.prototype, [\n 'cloneNode', 'appendChild', 'insertBefore', 'removeChild',\n 'replaceChild', 'setAttribute', 'removeAttribute',\n 'querySelector', 'querySelectorAll'\n]);\n\nforwardReadOnlyProperties(DomApi.prototype, [\n 'parentNode', 'firstChild', 'lastChild',\n 'nextSibling', 'previousSibling', 'firstElementChild',\n 'lastElementChild', 'nextElementSibling', 'previousElementSibling',\n 'childNodes', 'children', 'classList'\n]);\n\nforwardProperties(DomApi.prototype, [\n 'textContent', 'innerHTML'\n]);\n\n/**\n * Legacy DOM and Event manipulation API wrapper factory used to abstract\n * differences between native Shadow DOM and \"Shady DOM\" when polyfilling on\n * older browsers.\n *\n * Note that in Polymer 2.x use of `Polymer.dom` is no longer required and\n * in the majority of cases simply facades directly to the standard native\n * API.\n *\n * @summary Legacy DOM and Event manipulation API wrapper factory used to\n * abstract differences between native Shadow DOM and \"Shady DOM.\"\n * @param {(Node|Event)=} obj Node or event to operate on\n * @return {!DomApi|!EventApi} Wrapper providing either node API or event API\n */\nexport const dom = function(obj) {\n obj = obj || document;\n if (!obj.__domApi) {\n let helper;\n if (obj instanceof Event) {\n helper = new EventApi(obj);\n } else {\n helper = new DomApi(obj);\n }\n obj.__domApi = helper;\n }\n return obj.__domApi;\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/* eslint-disable no-unused-vars */\n/**\n * When using Closure Compiler, JSCompiler_renameProperty(property, object) is replaced by the munged name for object[property]\n * We cannot alias this function, so we have to use a small shim that has the same behavior when not compiling.\n *\n * @param {string} prop Property name\n * @param {?Object} obj Reference object\n * @return {string} Potentially renamed property name\n */\nwindow.JSCompiler_renameProperty = function(prop, obj) {\n return prop;\n};\n/* eslint-enable */\n\nexport {};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\n// unique global id for deduping mixins.\nlet dedupeId = 0;\n\n/**\n * @constructor\n * @extends {Function}\n * @private\n */\nfunction MixinFunction(){}\n/** @type {(WeakMap | undefined)} */\nMixinFunction.prototype.__mixinApplications;\n/** @type {(Object | undefined)} */\nMixinFunction.prototype.__mixinSet;\n\n/* eslint-disable valid-jsdoc */\n/**\n * Wraps an ES6 class expression mixin such that the mixin is only applied\n * if it has not already been applied its base argument. Also memoizes mixin\n * applications.\n *\n * @template T\n * @param {T} mixin ES6 class expression mixin to wrap\n * @return {T}\n * @suppress {invalidCasts}\n */\nexport const dedupingMixin = function(mixin) {\n let mixinApplications = /** @type {!MixinFunction} */(mixin).__mixinApplications;\n if (!mixinApplications) {\n mixinApplications = new WeakMap();\n /** @type {!MixinFunction} */(mixin).__mixinApplications = mixinApplications;\n }\n // maintain a unique id for each mixin\n let mixinDedupeId = dedupeId++;\n function dedupingMixin(base) {\n let baseSet = /** @type {!MixinFunction} */(base).__mixinSet;\n if (baseSet && baseSet[mixinDedupeId]) {\n return base;\n }\n let map = mixinApplications;\n let extended = map.get(base);\n if (!extended) {\n extended = /** @type {!Function} */(mixin)(base);\n map.set(base, extended);\n }\n // copy inherited mixin set from the extended class, or the base class\n // NOTE: we avoid use of Set here because some browser (IE11)\n // cannot extend a base Set via the constructor.\n let mixinSet = Object.create(/** @type {!MixinFunction} */(extended).__mixinSet || baseSet || null);\n mixinSet[mixinDedupeId] = true;\n /** @type {!MixinFunction} */(extended).__mixinSet = mixinSet;\n return extended;\n }\n\n return dedupingMixin;\n};\n/* eslint-enable valid-jsdoc */\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nimport { pathFromUrl } from './resolve-url.js';\nexport const useShadow = !(window.ShadyDOM);\nexport const useNativeCSSProperties = Boolean(!window.ShadyCSS || window.ShadyCSS.nativeCss);\nexport const useNativeCustomElements = !(window.customElements.polyfillWrapFlushCallback);\n\n\n/**\n * Globally settable property that is automatically assigned to\n * `ElementMixin` instances, useful for binding in templates to\n * make URL's relative to an application's root. Defaults to the main\n * document URL, but can be overridden by users. It may be useful to set\n * `rootPath` to provide a stable application mount path when\n * using client side routing.\n */\nexport let rootPath = undefined ||\n pathFromUrl(document.baseURI || window.location.href);\n\n/**\n * Sets the global rootPath property used by `ElementMixin` and\n * available via `rootPath`.\n *\n * @param {string} path The new root path\n * @return {void}\n */\nexport const setRootPath = function(path) {\n rootPath = path;\n};\n\n/**\n * A global callback used to sanitize any value before inserting it into the DOM.\n * The callback signature is:\n *\n * function sanitizeDOMValue(value, name, type, node) { ... }\n *\n * Where:\n *\n * `value` is the value to sanitize.\n * `name` is the name of an attribute or property (for example, href).\n * `type` indicates where the value is being inserted: one of property, attribute, or text.\n * `node` is the node where the value is being inserted.\n *\n * @type {(function(*,string,string,Node):*)|undefined}\n */\nexport let sanitizeDOMValue = window.Polymer && window.Polymer.sanitizeDOMValue || undefined;\n\n/**\n * Sets the global sanitizeDOMValue available via this module's exported\n * `sanitizeDOMValue` variable.\n *\n * @param {(function(*,string,string,Node):*)|undefined} newSanitizeDOMValue the global sanitizeDOMValue callback\n * @return {void}\n */\nexport const setSanitizeDOMValue = function(newSanitizeDOMValue) {\n sanitizeDOMValue = newSanitizeDOMValue;\n};\n\n/**\n * Globally settable property to make Polymer Gestures use passive TouchEvent listeners when recognizing gestures.\n * When set to `true`, gestures made from touch will not be able to prevent scrolling, allowing for smoother\n * scrolling performance.\n * Defaults to `false` for backwards compatibility.\n */\nexport let passiveTouchGestures = false;\n\n/**\n * Sets `passiveTouchGestures` globally for all elements using Polymer Gestures.\n *\n * @param {boolean} usePassive enable or disable passive touch gestures globally\n * @return {void}\n */\nexport const setPassiveTouchGestures = function(usePassive) {\n passiveTouchGestures = usePassive;\n};\n\n/**\n * Setting to ensure Polymer template evaluation only occurs based on tempates\n * defined in trusted script. When true, `` re-registration is\n * disallowed, `` is disabled, and ``/``\n * templates will only evaluate in the context of a trusted element template.\n */\nexport let strictTemplatePolicy = false;\n\n/**\n * Sets `strictTemplatePolicy` globally for all elements\n *\n * @param {boolean} useStrictPolicy enable or disable strict template policy\n * globally\n * @return {void}\n */\nexport const setStrictTemplatePolicy = function(useStrictPolicy) {\n strictTemplatePolicy = useStrictPolicy;\n};\n\n/**\n * Setting to enable dom-module lookup from Polymer.Element. By default,\n * templates must be defined in script using the `static get template()`\n * getter and the `html` tag function. To enable legacy loading of templates\n * via dom-module, set this flag to true.\n */\nexport let allowTemplateFromDomModule = false;\n\n/**\n * Sets `lookupTemplateFromDomModule` globally for all elements\n *\n * @param {boolean} allowDomModule enable or disable template lookup \n * globally\n * @return {void}\n */\nexport const setAllowTemplateFromDomModule = function(allowDomModule) {\n allowTemplateFromDomModule = allowDomModule;\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * @fileoverview\n *\n * This module provides a number of strategies for enqueuing asynchronous\n * tasks. Each sub-module provides a standard `run(fn)` interface that returns a\n * handle, and a `cancel(handle)` interface for canceling async tasks before\n * they run.\n *\n * @summary Module that provides a number of strategies for enqueuing\n * asynchronous tasks.\n */\n\nimport './boot.js';\n\n// Microtask implemented using Mutation Observer\nlet microtaskCurrHandle = 0;\nlet microtaskLastHandle = 0;\nlet microtaskCallbacks = [];\nlet microtaskNodeContent = 0;\nlet microtaskNode = document.createTextNode('');\nnew window.MutationObserver(microtaskFlush).observe(microtaskNode, {characterData: true});\n\nfunction microtaskFlush() {\n const len = microtaskCallbacks.length;\n for (let i = 0; i < len; i++) {\n let cb = microtaskCallbacks[i];\n if (cb) {\n try {\n cb();\n } catch (e) {\n setTimeout(() => { throw e; });\n }\n }\n }\n microtaskCallbacks.splice(0, len);\n microtaskLastHandle += len;\n}\n\n/**\n * Async interface wrapper around `setTimeout`.\n *\n * @namespace\n * @summary Async interface wrapper around `setTimeout`.\n */\nconst timeOut = {\n /**\n * Returns a sub-module with the async interface providing the provided\n * delay.\n *\n * @memberof timeOut\n * @param {number=} delay Time to wait before calling callbacks in ms\n * @return {!AsyncInterface} An async timeout interface\n */\n after(delay) {\n return {\n run(fn) { return window.setTimeout(fn, delay); },\n cancel(handle) {\n window.clearTimeout(handle);\n }\n };\n },\n /**\n * Enqueues a function called in the next task.\n *\n * @memberof timeOut\n * @param {!Function} fn Callback to run\n * @param {number=} delay Delay in milliseconds\n * @return {number} Handle used for canceling task\n */\n run(fn, delay) {\n return window.setTimeout(fn, delay);\n },\n /**\n * Cancels a previously enqueued `timeOut` callback.\n *\n * @memberof timeOut\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n window.clearTimeout(handle);\n }\n};\nexport {timeOut};\n\n/**\n * Async interface wrapper around `requestAnimationFrame`.\n *\n * @namespace\n * @summary Async interface wrapper around `requestAnimationFrame`.\n */\nconst animationFrame = {\n /**\n * Enqueues a function called at `requestAnimationFrame` timing.\n *\n * @memberof animationFrame\n * @param {function(number):void} fn Callback to run\n * @return {number} Handle used for canceling task\n */\n run(fn) {\n return window.requestAnimationFrame(fn);\n },\n /**\n * Cancels a previously enqueued `animationFrame` callback.\n *\n * @memberof animationFrame\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n window.cancelAnimationFrame(handle);\n }\n};\nexport {animationFrame};\n\n/**\n * Async interface wrapper around `requestIdleCallback`. Falls back to\n * `setTimeout` on browsers that do not support `requestIdleCallback`.\n *\n * @namespace\n * @summary Async interface wrapper around `requestIdleCallback`.\n */\nconst idlePeriod = {\n /**\n * Enqueues a function called at `requestIdleCallback` timing.\n *\n * @memberof idlePeriod\n * @param {function(!IdleDeadline):void} fn Callback to run\n * @return {number} Handle used for canceling task\n */\n run(fn) {\n return window.requestIdleCallback ?\n window.requestIdleCallback(fn) :\n window.setTimeout(fn, 16);\n },\n /**\n * Cancels a previously enqueued `idlePeriod` callback.\n *\n * @memberof idlePeriod\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n window.cancelIdleCallback ?\n window.cancelIdleCallback(handle) :\n window.clearTimeout(handle);\n }\n};\nexport {idlePeriod};\n\n/**\n * Async interface for enqueuing callbacks that run at microtask timing.\n *\n * Note that microtask timing is achieved via a single `MutationObserver`,\n * and thus callbacks enqueued with this API will all run in a single\n * batch, and not interleaved with other microtasks such as promises.\n * Promises are avoided as an implementation choice for the time being\n * due to Safari bugs that cause Promises to lack microtask guarantees.\n *\n * @namespace\n * @summary Async interface for enqueuing callbacks that run at microtask\n * timing.\n */\nconst microTask = {\n\n /**\n * Enqueues a function called at microtask timing.\n *\n * @memberof microTask\n * @param {!Function=} callback Callback to run\n * @return {number} Handle used for canceling task\n */\n run(callback) {\n microtaskNode.textContent = microtaskNodeContent++;\n microtaskCallbacks.push(callback);\n return microtaskCurrHandle++;\n },\n\n /**\n * Cancels a previously enqueued `microTask` callback.\n *\n * @memberof microTask\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n const idx = handle - microtaskLastHandle;\n if (idx >= 0) {\n if (!microtaskCallbacks[idx]) {\n throw new Error('invalid async handle: ' + handle);\n }\n microtaskCallbacks[idx] = null;\n }\n }\n\n};\nexport {microTask};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nimport './mixin.js';\nimport './async.js';\n\n/**\n * @summary Collapse multiple callbacks into one invocation after a timer.\n */\nexport class Debouncer {\n constructor() {\n this._asyncModule = null;\n this._callback = null;\n this._timer = null;\n }\n /**\n * Sets the scheduler; that is, a module with the Async interface,\n * a callback and optional arguments to be passed to the run function\n * from the async module.\n *\n * @param {!AsyncInterface} asyncModule Object with Async interface.\n * @param {function()} callback Callback to run.\n * @return {void}\n */\n setConfig(asyncModule, callback) {\n this._asyncModule = asyncModule;\n this._callback = callback;\n this._timer = this._asyncModule.run(() => {\n this._timer = null;\n this._callback();\n });\n }\n /**\n * Cancels an active debouncer and returns a reference to itself.\n *\n * @return {void}\n */\n cancel() {\n if (this.isActive()) {\n this._asyncModule.cancel(/** @type {number} */(this._timer));\n this._timer = null;\n }\n }\n /**\n * Flushes an active debouncer and returns a reference to itself.\n *\n * @return {void}\n */\n flush() {\n if (this.isActive()) {\n this.cancel();\n this._callback();\n }\n }\n /**\n * Returns true if the debouncer is active.\n *\n * @return {boolean} True if active.\n */\n isActive() {\n return this._timer != null;\n }\n /**\n * Creates a debouncer if no debouncer is passed as a parameter\n * or it cancels an active debouncer otherwise. The following\n * example shows how a debouncer can be called multiple times within a\n * microtask and \"debounced\" such that the provided callback function is\n * called once. Add this method to a custom element:\n *\n * ```js\n * import {microTask} from '@polymer/polymer/lib/utils/async.js';\n * import {Debouncer} from '@polymer/polymer/lib/utils/debounce.js';\n * // ...\n *\n * _debounceWork() {\n * this._debounceJob = Debouncer.debounce(this._debounceJob,\n * microTask, () => this._doWork());\n * }\n * ```\n *\n * If the `_debounceWork` method is called multiple times within the same\n * microtask, the `_doWork` function will be called only once at the next\n * microtask checkpoint.\n *\n * Note: In testing it is often convenient to avoid asynchrony. To accomplish\n * this with a debouncer, you can use `enqueueDebouncer` and\n * `flush`. For example, extend the above example by adding\n * `enqueueDebouncer(this._debounceJob)` at the end of the\n * `_debounceWork` method. Then in a test, call `flush` to ensure\n * the debouncer has completed.\n *\n * @param {Debouncer?} debouncer Debouncer object.\n * @param {!AsyncInterface} asyncModule Object with Async interface\n * @param {function()} callback Callback to run.\n * @return {!Debouncer} Returns a debouncer object.\n */\n static debounce(debouncer, asyncModule, callback) {\n if (debouncer instanceof Debouncer) {\n debouncer.cancel();\n } else {\n debouncer = new Debouncer();\n }\n debouncer.setConfig(asyncModule, callback);\n return debouncer;\n }\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n/* eslint-disable no-unused-vars */\nimport { Debouncer } from '../utils/debounce.js'; // used in type annotations\n/* eslint-enable no-unused-vars */\n\nlet debouncerQueue = [];\n\n/**\n * Adds a `Debouncer` to a list of globally flushable tasks.\n *\n * @param {!Debouncer} debouncer Debouncer to enqueue\n * @return {void}\n */\nexport const enqueueDebouncer = function(debouncer) {\n debouncerQueue.push(debouncer);\n};\n\nfunction flushDebouncers() {\n const didFlush = Boolean(debouncerQueue.length);\n while (debouncerQueue.length) {\n try {\n debouncerQueue.shift().flush();\n } catch(e) {\n setTimeout(() => {\n throw e;\n });\n }\n }\n return didFlush;\n}\n\n/**\n * Forces several classes of asynchronously queued tasks to flush:\n * - Debouncers added via `enqueueDebouncer`\n * - ShadyDOM distribution\n *\n * @return {void}\n */\nexport const flush = function() {\n let shadyDOM, debouncers;\n do {\n shadyDOM = window.ShadyDOM && ShadyDOM.flush();\n if (window.ShadyCSS && window.ShadyCSS.ScopingShim) {\n window.ShadyCSS.ScopingShim.flush();\n }\n debouncers = flushDebouncers();\n } while (shadyDOM || debouncers);\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nimport { ElementMixin, version } from './lib/mixins/element-mixin.js';\nexport { html } from './lib/utils/html-tag.js';\n\nexport { version };\n\n/**\n * Base class that provides the core API for Polymer's meta-programming\n * features including template stamping, data-binding, attribute deserialization,\n * and property change observation.\n *\n * @customElement\n * @polymer\n * @constructor\n * @implements {Polymer_ElementMixin}\n * @extends HTMLElement\n * @appliesMixin ElementMixin\n * @summary Custom element base class that provides the core API for Polymer's\n * key meta-programming features including template stamping, data-binding,\n * attribute deserialization, and property change observation\n */\nexport const PolymerElement = ElementMixin(HTMLElement);\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nlet CSS_URL_RX = /(url\\()([^)]*)(\\))/g;\nlet ABS_URL = /(^\\/)|(^#)|(^[\\w-\\d]*:)/;\nlet workingURL;\nlet resolveDoc;\n/**\n * Resolves the given URL against the provided `baseUri'.\n *\n * Note that this function performs no resolution for URLs that start\n * with `/` (absolute URLs) or `#` (hash identifiers). For general purpose\n * URL resolution, use `window.URL`.\n *\n * @param {string} url Input URL to resolve\n * @param {?string=} baseURI Base URI to resolve the URL against\n * @return {string} resolved URL\n */\nexport function resolveUrl(url, baseURI) {\n if (url && ABS_URL.test(url)) {\n return url;\n }\n // Lazy feature detection.\n if (workingURL === undefined) {\n workingURL = false;\n try {\n const u = new URL('b', 'http://a');\n u.pathname = 'c%20d';\n workingURL = (u.href === 'http://a/c%20d');\n } catch (e) {\n // silently fail\n }\n }\n if (!baseURI) {\n baseURI = document.baseURI || window.location.href;\n }\n if (workingURL) {\n return (new URL(url, baseURI)).href;\n }\n // Fallback to creating an anchor into a disconnected document.\n if (!resolveDoc) {\n resolveDoc = document.implementation.createHTMLDocument('temp');\n resolveDoc.base = resolveDoc.createElement('base');\n resolveDoc.head.appendChild(resolveDoc.base);\n resolveDoc.anchor = resolveDoc.createElement('a');\n resolveDoc.body.appendChild(resolveDoc.anchor);\n }\n resolveDoc.base.href = baseURI;\n resolveDoc.anchor.href = url;\n return resolveDoc.anchor.href || url;\n\n}\n\n/**\n * Resolves any relative URL's in the given CSS text against the provided\n * `ownerDocument`'s `baseURI`.\n *\n * @param {string} cssText CSS text to process\n * @param {string} baseURI Base URI to resolve the URL against\n * @return {string} Processed CSS text with resolved URL's\n */\nexport function resolveCss(cssText, baseURI) {\n return cssText.replace(CSS_URL_RX, function(m, pre, url, post) {\n return pre + '\\'' +\n resolveUrl(url.replace(/[\"']/g, ''), baseURI) +\n '\\'' + post;\n });\n}\n\n/**\n * Returns a path from a given `url`. The path includes the trailing\n * `/` from the url.\n *\n * @param {string} url Input URL to transform\n * @return {string} resolved path\n */\nexport function pathFromUrl(url) {\n return url.substring(0, url.lastIndexOf('/') + 1);\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\n/**\n * Module with utilities for manipulating structured data path strings.\n *\n * @summary Module with utilities for manipulating structured data path strings.\n */\n\n/**\n * Returns true if the given string is a structured data path (has dots).\n *\n * Example:\n *\n * ```\n * isPath('foo.bar.baz') // true\n * isPath('foo') // false\n * ```\n *\n * @param {string} path Path string\n * @return {boolean} True if the string contained one or more dots\n */\nexport function isPath(path) {\n return path.indexOf('.') >= 0;\n}\n\n/**\n * Returns the root property name for the given path.\n *\n * Example:\n *\n * ```\n * root('foo.bar.baz') // 'foo'\n * root('foo') // 'foo'\n * ```\n *\n * @param {string} path Path string\n * @return {string} Root property name\n */\nexport function root(path) {\n let dotIndex = path.indexOf('.');\n if (dotIndex === -1) {\n return path;\n }\n return path.slice(0, dotIndex);\n}\n\n/**\n * Given `base` is `foo.bar`, `foo` is an ancestor, `foo.bar` is not\n * Returns true if the given path is an ancestor of the base path.\n *\n * Example:\n *\n * ```\n * isAncestor('foo.bar', 'foo') // true\n * isAncestor('foo.bar', 'foo.bar') // false\n * isAncestor('foo.bar', 'foo.bar.baz') // false\n * ```\n *\n * @param {string} base Path string to test against.\n * @param {string} path Path string to test.\n * @return {boolean} True if `path` is an ancestor of `base`.\n */\nexport function isAncestor(base, path) {\n // base.startsWith(path + '.');\n return base.indexOf(path + '.') === 0;\n}\n\n/**\n * Given `base` is `foo.bar`, `foo.bar.baz` is an descendant\n *\n * Example:\n *\n * ```\n * isDescendant('foo.bar', 'foo.bar.baz') // true\n * isDescendant('foo.bar', 'foo.bar') // false\n * isDescendant('foo.bar', 'foo') // false\n * ```\n *\n * @param {string} base Path string to test against.\n * @param {string} path Path string to test.\n * @return {boolean} True if `path` is a descendant of `base`.\n */\nexport function isDescendant(base, path) {\n // path.startsWith(base + '.');\n return path.indexOf(base + '.') === 0;\n}\n\n/**\n * Replaces a previous base path with a new base path, preserving the\n * remainder of the path.\n *\n * User must ensure `path` has a prefix of `base`.\n *\n * Example:\n *\n * ```\n * translate('foo.bar', 'zot', 'foo.bar.baz') // 'zot.baz'\n * ```\n *\n * @param {string} base Current base string to remove\n * @param {string} newBase New base string to replace with\n * @param {string} path Path to translate\n * @return {string} Translated string\n */\nexport function translate(base, newBase, path) {\n return newBase + path.slice(base.length);\n}\n\n/**\n * @param {string} base Path string to test against\n * @param {string} path Path string to test\n * @return {boolean} True if `path` is equal to `base`\n */\nexport function matches(base, path) {\n return (base === path) ||\n isAncestor(base, path) ||\n isDescendant(base, path);\n}\n\n/**\n * Converts array-based paths to flattened path. String-based paths\n * are returned as-is.\n *\n * Example:\n *\n * ```\n * normalize(['foo.bar', 0, 'baz']) // 'foo.bar.0.baz'\n * normalize('foo.bar.0.baz') // 'foo.bar.0.baz'\n * ```\n *\n * @param {string | !Array} path Input path\n * @return {string} Flattened path\n */\nexport function normalize(path) {\n if (Array.isArray(path)) {\n let parts = [];\n for (let i=0; i} path Input path\n * @return {!Array} Array of path parts\n * @suppress {checkTypes}\n */\nexport function split(path) {\n if (Array.isArray(path)) {\n return normalize(path).split('.');\n }\n return path.toString().split('.');\n}\n\n/**\n * Reads a value from a path. If any sub-property in the path is `undefined`,\n * this method returns `undefined` (will never throw.\n *\n * @param {Object} root Object from which to dereference path from\n * @param {string | !Array} path Path to read\n * @param {Object=} info If an object is provided to `info`, the normalized\n * (flattened) path will be set to `info.path`.\n * @return {*} Value at path, or `undefined` if the path could not be\n * fully dereferenced.\n */\nexport function get(root, path, info) {\n let prop = root;\n let parts = split(path);\n // Loop over path parts[0..n-1] and dereference\n for (let i=0; i} path Path to set\n * @param {*} value Value to set to path\n * @return {string | undefined} The normalized version of the input path\n */\nexport function set(root, path, value) {\n let prop = root;\n let parts = split(path);\n let last = parts[parts.length-1];\n if (parts.length > 1) {\n // Loop over path parts[0..n-2] and dereference\n for (let i=0; i m[1].toUpperCase()\n )\n );\n}\n\n/**\n * Converts \"camelCase\" identifier (e.g. `fooBarBaz`) to \"dash-case\"\n * (e.g. `foo-bar-baz`).\n *\n * @param {string} camel Camel-case identifier\n * @return {string} Dash-case representation of the identifier\n */\nexport function camelToDashCase(camel) {\n return caseMap[camel] || (\n caseMap[camel] = camel.replace(CAMEL_TO_DASH, '-$1').toLowerCase()\n );\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * @fileoverview\n *\n * Module for adding listeners to a node for the following normalized\n * cross-platform \"gesture\" events:\n * - `down` - mouse or touch went down\n * - `up` - mouse or touch went up\n * - `tap` - mouse click or finger tap\n * - `track` - mouse drag or touch move\n *\n * @summary Module for adding cross-platform gesture event listeners.\n */\n\nimport './boot.js';\n\nimport { timeOut, microTask } from './async.js';\nimport { Debouncer } from './debounce.js';\nimport { passiveTouchGestures } from './settings.js';\n\n// detect native touch action support\nlet HAS_NATIVE_TA = typeof document.head.style.touchAction === 'string';\nlet GESTURE_KEY = '__polymerGestures';\nlet HANDLED_OBJ = '__polymerGesturesHandled';\nlet TOUCH_ACTION = '__polymerGesturesTouchAction';\n// radius for tap and track\nlet TAP_DISTANCE = 25;\nlet TRACK_DISTANCE = 5;\n// number of last N track positions to keep\nlet TRACK_LENGTH = 2;\n\n// Disabling \"mouse\" handlers for 2500ms is enough\nlet MOUSE_TIMEOUT = 2500;\nlet MOUSE_EVENTS = ['mousedown', 'mousemove', 'mouseup', 'click'];\n// an array of bitmask values for mapping MouseEvent.which to MouseEvent.buttons\nlet MOUSE_WHICH_TO_BUTTONS = [0, 1, 4, 2];\nlet MOUSE_HAS_BUTTONS = (function() {\n try {\n return new MouseEvent('test', {buttons: 1}).buttons === 1;\n } catch (e) {\n return false;\n }\n})();\n\n/**\n * @param {string} name Possible mouse event name\n * @return {boolean} true if mouse event, false if not\n */\nfunction isMouseEvent(name) {\n return MOUSE_EVENTS.indexOf(name) > -1;\n}\n\n/* eslint no-empty: [\"error\", { \"allowEmptyCatch\": true }] */\n// check for passive event listeners\nlet SUPPORTS_PASSIVE = false;\n(function() {\n try {\n let opts = Object.defineProperty({}, 'passive', {get() {SUPPORTS_PASSIVE = true;}});\n window.addEventListener('test', null, opts);\n window.removeEventListener('test', null, opts);\n } catch(e) {}\n})();\n\n/**\n * Generate settings for event listeners, dependant on `passiveTouchGestures`\n *\n * @param {string} eventName Event name to determine if `{passive}` option is\n * needed\n * @return {{passive: boolean} | undefined} Options to use for addEventListener\n * and removeEventListener\n */\nfunction PASSIVE_TOUCH(eventName) {\n if (isMouseEvent(eventName) || eventName === 'touchend') {\n return;\n }\n if (HAS_NATIVE_TA && SUPPORTS_PASSIVE && passiveTouchGestures) {\n return {passive: true};\n } else {\n return;\n }\n}\n\n// Check for touch-only devices\nlet IS_TOUCH_ONLY = navigator.userAgent.match(/iP(?:[oa]d|hone)|Android/);\n\n// keep track of any labels hit by the mouseCanceller\n/** @type {!Array} */\nconst clickedLabels = [];\n\n/** @type {!Object} */\nconst labellable = {\n 'button': true,\n 'input': true,\n 'keygen': true,\n 'meter': true,\n 'output': true,\n 'textarea': true,\n 'progress': true,\n 'select': true\n};\n\n// Defined at https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#enabling-and-disabling-form-controls:-the-disabled-attribute\n/** @type {!Object} */\nconst canBeDisabled = {\n 'button': true,\n 'command': true,\n 'fieldset': true,\n 'input': true,\n 'keygen': true,\n 'optgroup': true,\n 'option': true,\n 'select': true,\n 'textarea': true\n};\n\n/**\n * @param {HTMLElement} el Element to check labelling status\n * @return {boolean} element can have labels\n */\nfunction canBeLabelled(el) {\n return labellable[el.localName] || false;\n}\n\n/**\n * @param {HTMLElement} el Element that may be labelled.\n * @return {!Array} Relevant label for `el`\n */\nfunction matchingLabels(el) {\n let labels = Array.prototype.slice.call(/** @type {HTMLInputElement} */(el).labels || []);\n // IE doesn't have `labels` and Safari doesn't populate `labels`\n // if element is in a shadowroot.\n // In this instance, finding the non-ancestor labels is enough,\n // as the mouseCancellor code will handle ancstor labels\n if (!labels.length) {\n labels = [];\n let root = el.getRootNode();\n // if there is an id on `el`, check for all labels with a matching `for` attribute\n if (el.id) {\n let matching = root.querySelectorAll(`label[for = ${el.id}]`);\n for (let i = 0; i < matching.length; i++) {\n labels.push(/** @type {!HTMLLabelElement} */(matching[i]));\n }\n }\n }\n return labels;\n}\n\n// touch will make synthetic mouse events\n// `preventDefault` on touchend will cancel them,\n// but this breaks `` focus and link clicks\n// disable mouse handlers for MOUSE_TIMEOUT ms after\n// a touchend to ignore synthetic mouse events\nlet mouseCanceller = function(mouseEvent) {\n // Check for sourceCapabilities, used to distinguish synthetic events\n // if mouseEvent did not come from a device that fires touch events,\n // it was made by a real mouse and should be counted\n // http://wicg.github.io/InputDeviceCapabilities/#dom-inputdevicecapabilities-firestouchevents\n let sc = mouseEvent.sourceCapabilities;\n if (sc && !sc.firesTouchEvents) {\n return;\n }\n // skip synthetic mouse events\n mouseEvent[HANDLED_OBJ] = {skip: true};\n // disable \"ghost clicks\"\n if (mouseEvent.type === 'click') {\n let clickFromLabel = false;\n let path = mouseEvent.composedPath && mouseEvent.composedPath();\n if (path) {\n for (let i = 0; i < path.length; i++) {\n if (path[i].nodeType === Node.ELEMENT_NODE) {\n if (path[i].localName === 'label') {\n clickedLabels.push(path[i]);\n } else if (canBeLabelled(path[i])) {\n let ownerLabels = matchingLabels(path[i]);\n // check if one of the clicked labels is labelling this element\n for (let j = 0; j < ownerLabels.length; j++) {\n clickFromLabel = clickFromLabel || clickedLabels.indexOf(ownerLabels[j]) > -1;\n }\n }\n }\n if (path[i] === POINTERSTATE.mouse.target) {\n return;\n }\n }\n }\n // if one of the clicked labels was labelling the target element,\n // this is not a ghost click\n if (clickFromLabel) {\n return;\n }\n mouseEvent.preventDefault();\n mouseEvent.stopPropagation();\n }\n};\n\n/**\n * @param {boolean=} setup True to add, false to remove.\n * @return {void}\n */\nfunction setupTeardownMouseCanceller(setup) {\n let events = IS_TOUCH_ONLY ? ['click'] : MOUSE_EVENTS;\n for (let i = 0, en; i < events.length; i++) {\n en = events[i];\n if (setup) {\n // reset clickLabels array\n clickedLabels.length = 0;\n document.addEventListener(en, mouseCanceller, true);\n } else {\n document.removeEventListener(en, mouseCanceller, true);\n }\n }\n}\n\nfunction ignoreMouse(e) {\n if (!POINTERSTATE.mouse.mouseIgnoreJob) {\n setupTeardownMouseCanceller(true);\n }\n let unset = function() {\n setupTeardownMouseCanceller();\n POINTERSTATE.mouse.target = null;\n POINTERSTATE.mouse.mouseIgnoreJob = null;\n };\n POINTERSTATE.mouse.target = e.composedPath()[0];\n POINTERSTATE.mouse.mouseIgnoreJob = Debouncer.debounce(\n POINTERSTATE.mouse.mouseIgnoreJob\n , timeOut.after(MOUSE_TIMEOUT)\n , unset);\n}\n\n/**\n * @param {MouseEvent} ev event to test for left mouse button down\n * @return {boolean} has left mouse button down\n */\nfunction hasLeftMouseButton(ev) {\n let type = ev.type;\n // exit early if the event is not a mouse event\n if (!isMouseEvent(type)) {\n return false;\n }\n // ev.button is not reliable for mousemove (0 is overloaded as both left button and no buttons)\n // instead we use ev.buttons (bitmask of buttons) or fall back to ev.which (deprecated, 0 for no buttons, 1 for left button)\n if (type === 'mousemove') {\n // allow undefined for testing events\n let buttons = ev.buttons === undefined ? 1 : ev.buttons;\n if ((ev instanceof window.MouseEvent) && !MOUSE_HAS_BUTTONS) {\n buttons = MOUSE_WHICH_TO_BUTTONS[ev.which] || 0;\n }\n // buttons is a bitmask, check that the left button bit is set (1)\n return Boolean(buttons & 1);\n } else {\n // allow undefined for testing events\n let button = ev.button === undefined ? 0 : ev.button;\n // ev.button is 0 in mousedown/mouseup/click for left button activation\n return button === 0;\n }\n}\n\nfunction isSyntheticClick(ev) {\n if (ev.type === 'click') {\n // ev.detail is 0 for HTMLElement.click in most browsers\n if (ev.detail === 0) {\n return true;\n }\n // in the worst case, check that the x/y position of the click is within\n // the bounding box of the target of the event\n // Thanks IE 10 >:(\n let t = _findOriginalTarget(ev);\n // make sure the target of the event is an element so we can use getBoundingClientRect,\n // if not, just assume it is a synthetic click\n if (!t.nodeType || /** @type {Element} */(t).nodeType !== Node.ELEMENT_NODE) {\n return true;\n }\n let bcr = /** @type {Element} */(t).getBoundingClientRect();\n // use page x/y to account for scrolling\n let x = ev.pageX, y = ev.pageY;\n // ev is a synthetic click if the position is outside the bounding box of the target\n return !((x >= bcr.left && x <= bcr.right) && (y >= bcr.top && y <= bcr.bottom));\n }\n return false;\n}\n\nlet POINTERSTATE = {\n mouse: {\n target: null,\n mouseIgnoreJob: null\n },\n touch: {\n x: 0,\n y: 0,\n id: -1,\n scrollDecided: false\n }\n};\n\nfunction firstTouchAction(ev) {\n let ta = 'auto';\n let path = ev.composedPath && ev.composedPath();\n if (path) {\n for (let i = 0, n; i < path.length; i++) {\n n = path[i];\n if (n[TOUCH_ACTION]) {\n ta = n[TOUCH_ACTION];\n break;\n }\n }\n }\n return ta;\n}\n\nfunction trackDocument(stateObj, movefn, upfn) {\n stateObj.movefn = movefn;\n stateObj.upfn = upfn;\n document.addEventListener('mousemove', movefn);\n document.addEventListener('mouseup', upfn);\n}\n\nfunction untrackDocument(stateObj) {\n document.removeEventListener('mousemove', stateObj.movefn);\n document.removeEventListener('mouseup', stateObj.upfn);\n stateObj.movefn = null;\n stateObj.upfn = null;\n}\n\n// use a document-wide touchend listener to start the ghost-click prevention mechanism\n// Use passive event listeners, if supported, to not affect scrolling performance\ndocument.addEventListener('touchend', ignoreMouse, SUPPORTS_PASSIVE ? {passive: true} : false);\n\n/** @type {!Object} */\nexport const gestures = {};\n\n/** @type {!Array} */\nexport const recognizers = [];\n\n/**\n * Finds the element rendered on the screen at the provided coordinates.\n *\n * Similar to `document.elementFromPoint`, but pierces through\n * shadow roots.\n *\n * @param {number} x Horizontal pixel coordinate\n * @param {number} y Vertical pixel coordinate\n * @return {Element} Returns the deepest shadowRoot inclusive element\n * found at the screen position given.\n */\nexport function deepTargetFind(x, y) {\n let node = document.elementFromPoint(x, y);\n let next = node;\n // this code path is only taken when native ShadowDOM is used\n // if there is a shadowroot, it may have a node at x/y\n // if there is not a shadowroot, exit the loop\n while (next && next.shadowRoot && !window.ShadyDOM) {\n // if there is a node at x/y in the shadowroot, look deeper\n let oldNext = next;\n next = next.shadowRoot.elementFromPoint(x, y);\n // on Safari, elementFromPoint may return the shadowRoot host\n if (oldNext === next) {\n break;\n }\n if (next) {\n node = next;\n }\n }\n return node;\n}\n\n/**\n * a cheaper check than ev.composedPath()[0];\n *\n * @private\n * @param {Event|Touch} ev Event.\n * @return {EventTarget} Returns the event target.\n */\nfunction _findOriginalTarget(ev) {\n // shadowdom\n if (ev.composedPath) {\n const targets = /** @type {!Array} */(ev.composedPath());\n // It shouldn't be, but sometimes targets is empty (window on Safari).\n return targets.length > 0 ? targets[0] : ev.target;\n }\n // shadydom\n return ev.target;\n}\n\n/**\n * @private\n * @param {Event} ev Event.\n * @return {void}\n */\nfunction _handleNative(ev) {\n let handled;\n let type = ev.type;\n let node = ev.currentTarget;\n let gobj = node[GESTURE_KEY];\n if (!gobj) {\n return;\n }\n let gs = gobj[type];\n if (!gs) {\n return;\n }\n if (!ev[HANDLED_OBJ]) {\n ev[HANDLED_OBJ] = {};\n if (type.slice(0, 5) === 'touch') {\n ev = /** @type {TouchEvent} */(ev); // eslint-disable-line no-self-assign\n let t = ev.changedTouches[0];\n if (type === 'touchstart') {\n // only handle the first finger\n if (ev.touches.length === 1) {\n POINTERSTATE.touch.id = t.identifier;\n }\n }\n if (POINTERSTATE.touch.id !== t.identifier) {\n return;\n }\n if (!HAS_NATIVE_TA) {\n if (type === 'touchstart' || type === 'touchmove') {\n _handleTouchAction(ev);\n }\n }\n }\n }\n handled = ev[HANDLED_OBJ];\n // used to ignore synthetic mouse events\n if (handled.skip) {\n return;\n }\n // reset recognizer state\n for (let i = 0, r; i < recognizers.length; i++) {\n r = recognizers[i];\n if (gs[r.name] && !handled[r.name]) {\n if (r.flow && r.flow.start.indexOf(ev.type) > -1 && r.reset) {\n r.reset();\n }\n }\n }\n // enforce gesture recognizer order\n for (let i = 0, r; i < recognizers.length; i++) {\n r = recognizers[i];\n if (gs[r.name] && !handled[r.name]) {\n handled[r.name] = true;\n r[type](ev);\n }\n }\n}\n\n/**\n * @private\n * @param {TouchEvent} ev Event.\n * @return {void}\n */\nfunction _handleTouchAction(ev) {\n let t = ev.changedTouches[0];\n let type = ev.type;\n if (type === 'touchstart') {\n POINTERSTATE.touch.x = t.clientX;\n POINTERSTATE.touch.y = t.clientY;\n POINTERSTATE.touch.scrollDecided = false;\n } else if (type === 'touchmove') {\n if (POINTERSTATE.touch.scrollDecided) {\n return;\n }\n POINTERSTATE.touch.scrollDecided = true;\n let ta = firstTouchAction(ev);\n let shouldPrevent = false;\n let dx = Math.abs(POINTERSTATE.touch.x - t.clientX);\n let dy = Math.abs(POINTERSTATE.touch.y - t.clientY);\n if (!ev.cancelable) {\n // scrolling is happening\n } else if (ta === 'none') {\n shouldPrevent = true;\n } else if (ta === 'pan-x') {\n shouldPrevent = dy > dx;\n } else if (ta === 'pan-y') {\n shouldPrevent = dx > dy;\n }\n if (shouldPrevent) {\n ev.preventDefault();\n } else {\n prevent('track');\n }\n }\n}\n\n/**\n * Adds an event listener to a node for the given gesture type.\n *\n * @param {!EventTarget} node Node to add listener on\n * @param {string} evType Gesture type: `down`, `up`, `track`, or `tap`\n * @param {!function(!Event):void} handler Event listener function to call\n * @return {boolean} Returns true if a gesture event listener was added.\n */\nexport function addListener(node, evType, handler) {\n if (gestures[evType]) {\n _add(node, evType, handler);\n return true;\n }\n return false;\n}\n\n/**\n * Removes an event listener from a node for the given gesture type.\n *\n * @param {!EventTarget} node Node to remove listener from\n * @param {string} evType Gesture type: `down`, `up`, `track`, or `tap`\n * @param {!function(!Event):void} handler Event listener function previously passed to\n * `addListener`.\n * @return {boolean} Returns true if a gesture event listener was removed.\n */\nexport function removeListener(node, evType, handler) {\n if (gestures[evType]) {\n _remove(node, evType, handler);\n return true;\n }\n return false;\n}\n\n/**\n * automate the event listeners for the native events\n *\n * @private\n * @param {!EventTarget} node Node on which to add the event.\n * @param {string} evType Event type to add.\n * @param {function(!Event)} handler Event handler function.\n * @return {void}\n */\nfunction _add(node, evType, handler) {\n let recognizer = gestures[evType];\n let deps = recognizer.deps;\n let name = recognizer.name;\n let gobj = node[GESTURE_KEY];\n if (!gobj) {\n node[GESTURE_KEY] = gobj = {};\n }\n for (let i = 0, dep, gd; i < deps.length; i++) {\n dep = deps[i];\n // don't add mouse handlers on iOS because they cause gray selection overlays\n if (IS_TOUCH_ONLY && isMouseEvent(dep) && dep !== 'click') {\n continue;\n }\n gd = gobj[dep];\n if (!gd) {\n gobj[dep] = gd = {_count: 0};\n }\n if (gd._count === 0) {\n node.addEventListener(dep, _handleNative, PASSIVE_TOUCH(dep));\n }\n gd[name] = (gd[name] || 0) + 1;\n gd._count = (gd._count || 0) + 1;\n }\n node.addEventListener(evType, handler);\n if (recognizer.touchAction) {\n setTouchAction(node, recognizer.touchAction);\n }\n}\n\n/**\n * automate event listener removal for native events\n *\n * @private\n * @param {!EventTarget} node Node on which to remove the event.\n * @param {string} evType Event type to remove.\n * @param {function(!Event): void} handler Event handler function.\n * @return {void}\n */\nfunction _remove(node, evType, handler) {\n let recognizer = gestures[evType];\n let deps = recognizer.deps;\n let name = recognizer.name;\n let gobj = node[GESTURE_KEY];\n if (gobj) {\n for (let i = 0, dep, gd; i < deps.length; i++) {\n dep = deps[i];\n gd = gobj[dep];\n if (gd && gd[name]) {\n gd[name] = (gd[name] || 1) - 1;\n gd._count = (gd._count || 1) - 1;\n if (gd._count === 0) {\n node.removeEventListener(dep, _handleNative, PASSIVE_TOUCH(dep));\n }\n }\n }\n }\n node.removeEventListener(evType, handler);\n}\n\n/**\n * Registers a new gesture event recognizer for adding new custom\n * gesture event types.\n *\n * @param {!GestureRecognizer} recog Gesture recognizer descriptor\n * @return {void}\n */\nexport function register(recog) {\n recognizers.push(recog);\n for (let i = 0; i < recog.emits.length; i++) {\n gestures[recog.emits[i]] = recog;\n }\n}\n\n/**\n * @private\n * @param {string} evName Event name.\n * @return {Object} Returns the gesture for the given event name.\n */\nfunction _findRecognizerByEvent(evName) {\n for (let i = 0, r; i < recognizers.length; i++) {\n r = recognizers[i];\n for (let j = 0, n; j < r.emits.length; j++) {\n n = r.emits[j];\n if (n === evName) {\n return r;\n }\n }\n }\n return null;\n}\n\n/**\n * Sets scrolling direction on node.\n *\n * This value is checked on first move, thus it should be called prior to\n * adding event listeners.\n *\n * @param {!EventTarget} node Node to set touch action setting on\n * @param {string} value Touch action value\n * @return {void}\n */\nexport function setTouchAction(node, value) {\n if (HAS_NATIVE_TA && node instanceof HTMLElement) {\n // NOTE: add touchAction async so that events can be added in\n // custom element constructors. Otherwise we run afoul of custom\n // elements restriction against settings attributes (style) in the\n // constructor.\n microTask.run(() => {\n node.style.touchAction = value;\n });\n }\n node[TOUCH_ACTION] = value;\n}\n\n/**\n * Dispatches an event on the `target` element of `type` with the given\n * `detail`.\n * @private\n * @param {!EventTarget} target The element on which to fire an event.\n * @param {string} type The type of event to fire.\n * @param {!Object=} detail The detail object to populate on the event.\n * @return {void}\n */\nfunction _fire(target, type, detail) {\n let ev = new Event(type, { bubbles: true, cancelable: true, composed: true });\n ev.detail = detail;\n target.dispatchEvent(ev);\n // forward `preventDefault` in a clean way\n if (ev.defaultPrevented) {\n let preventer = detail.preventer || detail.sourceEvent;\n if (preventer && preventer.preventDefault) {\n preventer.preventDefault();\n }\n }\n}\n\n/**\n * Prevents the dispatch and default action of the given event name.\n *\n * @param {string} evName Event name.\n * @return {void}\n */\nexport function prevent(evName) {\n let recognizer = _findRecognizerByEvent(evName);\n if (recognizer.info) {\n recognizer.info.prevent = true;\n }\n}\n\n/**\n * Reset the 2500ms timeout on processing mouse input after detecting touch input.\n *\n * Touch inputs create synthesized mouse inputs anywhere from 0 to 2000ms after the touch.\n * This method should only be called during testing with simulated touch inputs.\n * Calling this method in production may cause duplicate taps or other Gestures.\n *\n * @return {void}\n */\nexport function resetMouseCanceller() {\n if (POINTERSTATE.mouse.mouseIgnoreJob) {\n POINTERSTATE.mouse.mouseIgnoreJob.flush();\n }\n}\n\n/* eslint-disable valid-jsdoc */\n\nregister({\n name: 'downup',\n deps: ['mousedown', 'touchstart', 'touchend'],\n flow: {\n start: ['mousedown', 'touchstart'],\n end: ['mouseup', 'touchend']\n },\n emits: ['down', 'up'],\n\n info: {\n movefn: null,\n upfn: null\n },\n\n /**\n * @this {GestureRecognizer}\n * @return {void}\n */\n reset: function() {\n untrackDocument(this.info);\n },\n\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n mousedown: function(e) {\n if (!hasLeftMouseButton(e)) {\n return;\n }\n let t = _findOriginalTarget(e);\n let self = this;\n let movefn = function movefn(e) {\n if (!hasLeftMouseButton(e)) {\n downupFire('up', t, e);\n untrackDocument(self.info);\n }\n };\n let upfn = function upfn(e) {\n if (hasLeftMouseButton(e)) {\n downupFire('up', t, e);\n }\n untrackDocument(self.info);\n };\n trackDocument(this.info, movefn, upfn);\n downupFire('down', t, e);\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchstart: function(e) {\n downupFire('down', _findOriginalTarget(e), e.changedTouches[0], e);\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchend: function(e) {\n downupFire('up', _findOriginalTarget(e), e.changedTouches[0], e);\n }\n});\n\n/**\n * @param {string} type\n * @param {EventTarget} target\n * @param {Event|Touch} event\n * @param {Event=} preventer\n * @return {void}\n */\nfunction downupFire(type, target, event, preventer) {\n if (!target) {\n return;\n }\n _fire(target, type, {\n x: event.clientX,\n y: event.clientY,\n sourceEvent: event,\n preventer: preventer,\n prevent: function(e) {\n return prevent(e);\n }\n });\n}\n\nregister({\n name: 'track',\n touchAction: 'none',\n deps: ['mousedown', 'touchstart', 'touchmove', 'touchend'],\n flow: {\n start: ['mousedown', 'touchstart'],\n end: ['mouseup', 'touchend']\n },\n emits: ['track'],\n\n info: {\n x: 0,\n y: 0,\n state: 'start',\n started: false,\n moves: [],\n /** @this {GestureInfo} */\n addMove: function(move) {\n if (this.moves.length > TRACK_LENGTH) {\n this.moves.shift();\n }\n this.moves.push(move);\n },\n movefn: null,\n upfn: null,\n prevent: false\n },\n\n /**\n * @this {GestureRecognizer}\n * @return {void}\n */\n reset: function() {\n this.info.state = 'start';\n this.info.started = false;\n this.info.moves = [];\n this.info.x = 0;\n this.info.y = 0;\n this.info.prevent = false;\n untrackDocument(this.info);\n },\n\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n mousedown: function(e) {\n if (!hasLeftMouseButton(e)) {\n return;\n }\n let t = _findOriginalTarget(e);\n let self = this;\n let movefn = function movefn(e) {\n let x = e.clientX, y = e.clientY;\n if (trackHasMovedEnough(self.info, x, y)) {\n // first move is 'start', subsequent moves are 'move', mouseup is 'end'\n self.info.state = self.info.started ? (e.type === 'mouseup' ? 'end' : 'track') : 'start';\n if (self.info.state === 'start') {\n // if and only if tracking, always prevent tap\n prevent('tap');\n }\n self.info.addMove({x: x, y: y});\n if (!hasLeftMouseButton(e)) {\n // always fire \"end\"\n self.info.state = 'end';\n untrackDocument(self.info);\n }\n if (t) {\n trackFire(self.info, t, e);\n }\n self.info.started = true;\n }\n };\n let upfn = function upfn(e) {\n if (self.info.started) {\n movefn(e);\n }\n\n // remove the temporary listeners\n untrackDocument(self.info);\n };\n // add temporary document listeners as mouse retargets\n trackDocument(this.info, movefn, upfn);\n this.info.x = e.clientX;\n this.info.y = e.clientY;\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchstart: function(e) {\n let ct = e.changedTouches[0];\n this.info.x = ct.clientX;\n this.info.y = ct.clientY;\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchmove: function(e) {\n let t = _findOriginalTarget(e);\n let ct = e.changedTouches[0];\n let x = ct.clientX, y = ct.clientY;\n if (trackHasMovedEnough(this.info, x, y)) {\n if (this.info.state === 'start') {\n // if and only if tracking, always prevent tap\n prevent('tap');\n }\n this.info.addMove({x: x, y: y});\n trackFire(this.info, t, ct);\n this.info.state = 'track';\n this.info.started = true;\n }\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchend: function(e) {\n let t = _findOriginalTarget(e);\n let ct = e.changedTouches[0];\n // only trackend if track was started and not aborted\n if (this.info.started) {\n // reset started state on up\n this.info.state = 'end';\n this.info.addMove({x: ct.clientX, y: ct.clientY});\n trackFire(this.info, t, ct);\n }\n }\n});\n\n/**\n * @param {!GestureInfo} info\n * @param {number} x\n * @param {number} y\n * @return {boolean}\n */\nfunction trackHasMovedEnough(info, x, y) {\n if (info.prevent) {\n return false;\n }\n if (info.started) {\n return true;\n }\n let dx = Math.abs(info.x - x);\n let dy = Math.abs(info.y - y);\n return (dx >= TRACK_DISTANCE || dy >= TRACK_DISTANCE);\n}\n\n/**\n * @param {!GestureInfo} info\n * @param {?EventTarget} target\n * @param {Touch} touch\n * @return {void}\n */\nfunction trackFire(info, target, touch) {\n if (!target) {\n return;\n }\n let secondlast = info.moves[info.moves.length - 2];\n let lastmove = info.moves[info.moves.length - 1];\n let dx = lastmove.x - info.x;\n let dy = lastmove.y - info.y;\n let ddx, ddy = 0;\n if (secondlast) {\n ddx = lastmove.x - secondlast.x;\n ddy = lastmove.y - secondlast.y;\n }\n _fire(target, 'track', {\n state: info.state,\n x: touch.clientX,\n y: touch.clientY,\n dx: dx,\n dy: dy,\n ddx: ddx,\n ddy: ddy,\n sourceEvent: touch,\n hover: function() {\n return deepTargetFind(touch.clientX, touch.clientY);\n }\n });\n}\n\nregister({\n name: 'tap',\n deps: ['mousedown', 'click', 'touchstart', 'touchend'],\n flow: {\n start: ['mousedown', 'touchstart'],\n end: ['click', 'touchend']\n },\n emits: ['tap'],\n info: {\n x: NaN,\n y: NaN,\n prevent: false\n },\n /**\n * @this {GestureRecognizer}\n * @return {void}\n */\n reset: function() {\n this.info.x = NaN;\n this.info.y = NaN;\n this.info.prevent = false;\n },\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n mousedown: function(e) {\n if (hasLeftMouseButton(e)) {\n this.info.x = e.clientX;\n this.info.y = e.clientY;\n }\n },\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n click: function(e) {\n if (hasLeftMouseButton(e)) {\n trackForward(this.info, e);\n }\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchstart: function(e) {\n const touch = e.changedTouches[0];\n this.info.x = touch.clientX;\n this.info.y = touch.clientY;\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchend: function(e) {\n trackForward(this.info, e.changedTouches[0], e);\n }\n});\n\n/**\n * @param {!GestureInfo} info\n * @param {Event | Touch} e\n * @param {Event=} preventer\n * @return {void}\n */\nfunction trackForward(info, e, preventer) {\n let dx = Math.abs(e.clientX - info.x);\n let dy = Math.abs(e.clientY - info.y);\n // find original target from `preventer` for TouchEvents, or `e` for MouseEvents\n let t = _findOriginalTarget((preventer || e));\n if (!t || (canBeDisabled[/** @type {!HTMLElement} */(t).localName] && t.hasAttribute('disabled'))) {\n return;\n }\n // dx,dy can be NaN if `click` has been simulated and there was no `down` for `start`\n if (isNaN(dx) || isNaN(dy) || (dx <= TAP_DISTANCE && dy <= TAP_DISTANCE) || isSyntheticClick(e)) {\n // prevent taps from being generated if an event has canceled them\n if (!info.prevent) {\n _fire(t, 'tap', {\n x: e.clientX,\n y: e.clientY,\n sourceEvent: e,\n preventer: preventer\n });\n }\n }\n}\n\n/* eslint-enable valid-jsdoc */\n\n/** @deprecated */\nexport const findOriginalTarget = _findOriginalTarget;\n\n/** @deprecated */\nexport const add = addListener;\n\n/** @deprecated */\nexport const remove = removeListener;\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nimport { LegacyElementMixin } from './legacy-element-mixin.js';\n\nlet metaProps = {\n attached: true,\n detached: true,\n ready: true,\n created: true,\n beforeRegister: true,\n registered: true,\n attributeChanged: true,\n // meta objects\n behaviors: true\n};\n\n/**\n * Applies a \"legacy\" behavior or array of behaviors to the provided class.\n *\n * Note: this method will automatically also apply the `LegacyElementMixin`\n * to ensure that any legacy behaviors can rely on legacy Polymer API on\n * the underlying element.\n *\n * @function\n * @template T\n * @param {!Object|!Array} behaviors Behavior object or array of behaviors.\n * @param {function(new:T)} klass Element class.\n * @return {?} Returns a new Element class extended by the\n * passed in `behaviors` and also by `LegacyElementMixin`.\n * @suppress {invalidCasts, checkTypes}\n */\nexport function mixinBehaviors(behaviors, klass) {\n if (!behaviors) {\n klass = /** @type {HTMLElement} */(klass); // eslint-disable-line no-self-assign\n return klass;\n }\n // NOTE: ensure the behavior is extending a class with\n // legacy element api. This is necessary since behaviors expect to be able\n // to access 1.x legacy api.\n klass = LegacyElementMixin(klass);\n if (!Array.isArray(behaviors)) {\n behaviors = [behaviors];\n }\n let superBehaviors = klass.prototype.behaviors;\n // get flattened, deduped list of behaviors *not* already on super class\n behaviors = flattenBehaviors(behaviors, null, superBehaviors);\n // mixin new behaviors\n klass = _mixinBehaviors(behaviors, klass);\n if (superBehaviors) {\n behaviors = superBehaviors.concat(behaviors);\n }\n // Set behaviors on prototype for BC...\n klass.prototype.behaviors = behaviors;\n return klass;\n}\n\n// NOTE:\n// 1.x\n// Behaviors were mixed in *in reverse order* and de-duped on the fly.\n// The rule was that behavior properties were copied onto the element\n// prototype if and only if the property did not already exist.\n// Given: Polymer{ behaviors: [A, B, C, A, B]}, property copy order was:\n// (1), B, (2), A, (3) C. This means prototype properties win over\n// B properties win over A win over C. This mirrors what would happen\n// with inheritance if element extended B extended A extended C.\n//\n// Again given, Polymer{ behaviors: [A, B, C, A, B]}, the resulting\n// `behaviors` array was [C, A, B].\n// Behavior lifecycle methods were called in behavior array order\n// followed by the element, e.g. (1) C.created, (2) A.created,\n// (3) B.created, (4) element.created. There was no support for\n// super, and \"super-behavior\" methods were callable only by name).\n//\n// 2.x\n// Behaviors are made into proper mixins which live in the\n// element's prototype chain. Behaviors are placed in the element prototype\n// eldest to youngest and de-duped youngest to oldest:\n// So, first [A, B, C, A, B] becomes [C, A, B] then,\n// the element prototype becomes (oldest) (1) PolymerElement, (2) class(C),\n// (3) class(A), (4) class(B), (5) class(Polymer({...})).\n// Result:\n// This means element properties win over B properties win over A win\n// over C. (same as 1.x)\n// If lifecycle is called (super then me), order is\n// (1) C.created, (2) A.created, (3) B.created, (4) element.created\n// (again same as 1.x)\nfunction _mixinBehaviors(behaviors, klass) {\n for (let i=0; i= 0; i--) {\n let b = behaviors[i];\n if (b) {\n if (Array.isArray(b)) {\n flattenBehaviors(b, list);\n } else {\n // dedup\n if (list.indexOf(b) < 0 && (!exclude || exclude.indexOf(b) < 0)) {\n list.unshift(b);\n }\n }\n } else {\n console.warn('behavior is null, check for missing or 404 import');\n }\n }\n return list;\n}\n\n/**\n * @param {!PolymerInit} info Polymer info object\n * @param {function(new:HTMLElement)} Base base class to extend with info object\n * @return {function(new:HTMLElement)} Generated class\n * @suppress {checkTypes}\n * @private\n */\nfunction GenerateClassFromInfo(info, Base) {\n\n /** @private */\n class PolymerGenerated extends Base {\n\n static get properties() {\n return info.properties;\n }\n\n static get observers() {\n return info.observers;\n }\n\n /**\n * @return {void}\n */\n created() {\n super.created();\n if (info.created) {\n info.created.call(this);\n }\n }\n\n /**\n * @return {void}\n */\n _registered() {\n super._registered();\n /* NOTE: `beforeRegister` is called here for bc, but the behavior\n is different than in 1.x. In 1.0, the method was called *after*\n mixing prototypes together but *before* processing of meta-objects.\n However, dynamic effects can still be set here and can be done either\n in `beforeRegister` or `registered`. It is no longer possible to set\n `is` in `beforeRegister` as you could in 1.x.\n */\n if (info.beforeRegister) {\n info.beforeRegister.call(Object.getPrototypeOf(this));\n }\n if (info.registered) {\n info.registered.call(Object.getPrototypeOf(this));\n }\n }\n\n /**\n * @return {void}\n */\n _applyListeners() {\n super._applyListeners();\n if (info.listeners) {\n for (let l in info.listeners) {\n this._addMethodEventListenerToNode(this, l, info.listeners[l]);\n }\n }\n }\n\n // note: exception to \"super then me\" rule;\n // do work before calling super so that super attributes\n // only apply if not already set.\n /**\n * @return {void}\n */\n _ensureAttributes() {\n if (info.hostAttributes) {\n for (let a in info.hostAttributes) {\n this._ensureAttribute(a, info.hostAttributes[a]);\n }\n }\n super._ensureAttributes();\n }\n\n /**\n * @return {void}\n */\n ready() {\n super.ready();\n if (info.ready) {\n info.ready.call(this);\n }\n }\n\n /**\n * @return {void}\n */\n attached() {\n super.attached();\n if (info.attached) {\n info.attached.call(this);\n }\n }\n\n /**\n * @return {void}\n */\n detached() {\n super.detached();\n if (info.detached) {\n info.detached.call(this);\n }\n }\n\n /**\n * Implements native Custom Elements `attributeChangedCallback` to\n * set an attribute value to a property via `_attributeToProperty`.\n *\n * @param {string} name Name of attribute that changed\n * @param {?string} old Old attribute value\n * @param {?string} value New attribute value\n * @return {void}\n */\n attributeChanged(name, old, value) {\n super.attributeChanged(name, old, value);\n if (info.attributeChanged) {\n info.attributeChanged.call(this, name, old, value);\n }\n }\n }\n\n PolymerGenerated.generatedFrom = info;\n\n for (let p in info) {\n // NOTE: cannot copy `metaProps` methods onto prototype at least because\n // `super.ready` must be called and is not included in the user fn.\n if (!(p in metaProps)) {\n let pd = Object.getOwnPropertyDescriptor(info, p);\n if (pd) {\n Object.defineProperty(PolymerGenerated.prototype, p, pd);\n }\n }\n }\n\n return PolymerGenerated;\n}\n\n/**\n * Generates a class that extends `LegacyElement` based on the\n * provided info object. Metadata objects on the `info` object\n * (`properties`, `observers`, `listeners`, `behaviors`, `is`) are used\n * for Polymer's meta-programming systems, and any functions are copied\n * to the generated class.\n *\n * Valid \"metadata\" values are as follows:\n *\n * `is`: String providing the tag name to register the element under. In\n * addition, if a `dom-module` with the same id exists, the first template\n * in that `dom-module` will be stamped into the shadow root of this element,\n * with support for declarative event listeners (`on-...`), Polymer data\n * bindings (`[[...]]` and `{{...}}`), and id-based node finding into\n * `this.$`.\n *\n * `properties`: Object describing property-related metadata used by Polymer\n * features (key: property names, value: object containing property metadata).\n * Valid keys in per-property metadata include:\n * - `type` (String|Number|Object|Array|...): Used by\n * `attributeChangedCallback` to determine how string-based attributes\n * are deserialized to JavaScript property values.\n * - `notify` (boolean): Causes a change in the property to fire a\n * non-bubbling event called `-changed`. Elements that have\n * enabled two-way binding to the property use this event to observe changes.\n * - `readOnly` (boolean): Creates a getter for the property, but no setter.\n * To set a read-only property, use the private setter method\n * `_setProperty(property, value)`.\n * - `observer` (string): Observer method name that will be called when\n * the property changes. The arguments of the method are\n * `(value, previousValue)`.\n * - `computed` (string): String describing method and dependent properties\n * for computing the value of this property (e.g. `'computeFoo(bar, zot)'`).\n * Computed properties are read-only by default and can only be changed\n * via the return value of the computing method.\n *\n * `observers`: Array of strings describing multi-property observer methods\n * and their dependent properties (e.g. `'observeABC(a, b, c)'`).\n *\n * `listeners`: Object describing event listeners to be added to each\n * instance of this element (key: event name, value: method name).\n *\n * `behaviors`: Array of additional `info` objects containing metadata\n * and callbacks in the same format as the `info` object here which are\n * merged into this element.\n *\n * `hostAttributes`: Object listing attributes to be applied to the host\n * once created (key: attribute name, value: attribute value). Values\n * are serialized based on the type of the value. Host attributes should\n * generally be limited to attributes such as `tabIndex` and `aria-...`.\n * Attributes in `hostAttributes` are only applied if a user-supplied\n * attribute is not already present (attributes in markup override\n * `hostAttributes`).\n *\n * In addition, the following Polymer-specific callbacks may be provided:\n * - `registered`: called after first instance of this element,\n * - `created`: called during `constructor`\n * - `attached`: called during `connectedCallback`\n * - `detached`: called during `disconnectedCallback`\n * - `ready`: called before first `attached`, after all properties of\n * this element have been propagated to its template and all observers\n * have run\n *\n * @param {!PolymerInit} info Object containing Polymer metadata and functions\n * to become class methods.\n * @template T\n * @param {function(T):T} mixin Optional mixin to apply to legacy base class\n * before extending with Polymer metaprogramming.\n * @return {function(new:HTMLElement)} Generated class\n */\nexport const Class = function(info, mixin) {\n if (!info) {\n console.warn(`Polymer's Class function requires \\`info\\` argument`);\n }\n const baseWithBehaviors = info.behaviors ?\n // note: mixinBehaviors ensures `LegacyElementMixin`.\n mixinBehaviors(info.behaviors, HTMLElement) :\n LegacyElementMixin(HTMLElement);\n const baseWithMixin = mixin ? mixin(baseWithBehaviors) : baseWithBehaviors;\n const klass = GenerateClassFromInfo(info, baseWithMixin);\n // decorate klass with registration info\n klass.is = info.is;\n return klass;\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { dedupingMixin } from '../utils/mixin.js';\nimport { PropertiesChanged } from './properties-changed.js';\n\n/**\n * Creates a copy of `props` with each property normalized such that\n * upgraded it is an object with at least a type property { type: Type}.\n *\n * @param {Object} props Properties to normalize\n * @return {Object} Copy of input `props` with normalized properties that\n * are in the form {type: Type}\n * @private\n */\nfunction normalizeProperties(props) {\n const output = {};\n for (let p in props) {\n const o = props[p];\n output[p] = (typeof o === 'function') ? {type: o} : o;\n }\n return output;\n}\n\n/**\n * Mixin that provides a minimal starting point to using the PropertiesChanged\n * mixin by providing a mechanism to declare properties in a static\n * getter (e.g. static get properties() { return { foo: String } }). Changes\n * are reported via the `_propertiesChanged` method.\n *\n * This mixin provides no specific support for rendering. Users are expected\n * to create a ShadowRoot and put content into it and update it in whatever\n * way makes sense. This can be done in reaction to properties changing by\n * implementing `_propertiesChanged`.\n *\n * @mixinFunction\n * @polymer\n * @appliesMixin PropertiesChanged\n * @summary Mixin that provides a minimal starting point for using\n * the PropertiesChanged mixin by providing a declarative `properties` object.\n */\nexport const PropertiesMixin = dedupingMixin(superClass => {\n\n /**\n * @constructor\n * @implements {Polymer_PropertiesChanged}\n * @private\n */\n const base = PropertiesChanged(superClass);\n\n /**\n * Returns the super class constructor for the given class, if it is an\n * instance of the PropertiesMixin.\n *\n * @param {!PropertiesMixinConstructor} constructor PropertiesMixin constructor\n * @return {?PropertiesMixinConstructor} Super class constructor\n */\n function superPropertiesClass(constructor) {\n const superCtor = Object.getPrototypeOf(constructor);\n\n // Note, the `PropertiesMixin` class below only refers to the class\n // generated by this call to the mixin; the instanceof test only works\n // because the mixin is deduped and guaranteed only to apply once, hence\n // all constructors in a proto chain will see the same `PropertiesMixin`\n return (superCtor.prototype instanceof PropertiesMixin) ?\n /** @type {!PropertiesMixinConstructor} */ (superCtor) : null;\n }\n\n /**\n * Returns a memoized version of the `properties` object for the\n * given class. Properties not in object format are converted to at\n * least {type}.\n *\n * @param {PropertiesMixinConstructor} constructor PropertiesMixin constructor\n * @return {Object} Memoized properties object\n */\n function ownProperties(constructor) {\n if (!constructor.hasOwnProperty(JSCompiler_renameProperty('__ownProperties', constructor))) {\n let props = null;\n\n if (constructor.hasOwnProperty(JSCompiler_renameProperty('properties', constructor))) {\n const properties = constructor.properties;\n\n if (properties) {\n props = normalizeProperties(properties);\n }\n }\n\n constructor.__ownProperties = props;\n }\n return constructor.__ownProperties;\n }\n\n /**\n * @polymer\n * @mixinClass\n * @extends {base}\n * @implements {Polymer_PropertiesMixin}\n * @unrestricted\n */\n class PropertiesMixin extends base {\n\n /**\n * Implements standard custom elements getter to observes the attributes\n * listed in `properties`.\n * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do\n */\n static get observedAttributes() {\n const props = this._properties;\n return props ? Object.keys(props).map(p => this.attributeNameForProperty(p)) : [];\n }\n\n /**\n * Finalizes an element definition, including ensuring any super classes\n * are also finalized. This includes ensuring property\n * accessors exist on the element prototype. This method calls\n * `_finalizeClass` to finalize each constructor in the prototype chain.\n * @return {void}\n */\n static finalize() {\n if (!this.hasOwnProperty(JSCompiler_renameProperty('__finalized', this))) {\n const superCtor = superPropertiesClass(/** @type {!PropertiesMixinConstructor} */(this));\n if (superCtor) {\n superCtor.finalize();\n }\n this.__finalized = true;\n this._finalizeClass();\n }\n }\n\n /**\n * Finalize an element class. This includes ensuring property\n * accessors exist on the element prototype. This method is called by\n * `finalize` and finalizes the class constructor.\n *\n * @protected\n */\n static _finalizeClass() {\n const props = ownProperties(/** @type {!PropertiesMixinConstructor} */(this));\n if (props) {\n this.createProperties(props);\n }\n }\n\n /**\n * Returns a memoized version of all properties, including those inherited\n * from super classes. Properties not in object format are converted to\n * at least {type}.\n *\n * @return {Object} Object containing properties for this class\n * @protected\n */\n static get _properties() {\n if (!this.hasOwnProperty(\n JSCompiler_renameProperty('__properties', this))) {\n const superCtor = superPropertiesClass(/** @type {!PropertiesMixinConstructor} */(this));\n this.__properties = Object.assign({},\n superCtor && superCtor._properties,\n ownProperties(/** @type {PropertiesMixinConstructor} */(this)));\n }\n return this.__properties;\n }\n\n /**\n * Overrides `PropertiesChanged` method to return type specified in the\n * static `properties` object for the given property.\n * @param {string} name Name of property\n * @return {*} Type to which to deserialize attribute\n *\n * @protected\n */\n static typeForProperty(name) {\n const info = this._properties[name];\n return info && info.type;\n }\n\n /**\n * Overrides `PropertiesChanged` method and adds a call to\n * `finalize` which lazily configures the element's property accessors.\n * @override\n * @return {void}\n */\n _initializeProperties() {\n this.constructor.finalize();\n super._initializeProperties();\n }\n\n /**\n * Called when the element is added to a document.\n * Calls `_enableProperties` to turn on property system from\n * `PropertiesChanged`.\n * @suppress {missingProperties} Super may or may not implement the callback\n * @return {void}\n * @override\n */\n connectedCallback() {\n if (super.connectedCallback) {\n super.connectedCallback();\n }\n this._enableProperties();\n }\n\n /**\n * Called when the element is removed from a document\n * @suppress {missingProperties} Super may or may not implement the callback\n * @return {void}\n * @override\n */\n disconnectedCallback() {\n if (super.disconnectedCallback) {\n super.disconnectedCallback();\n }\n }\n\n }\n\n return PropertiesMixin;\n\n});\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { rootPath, strictTemplatePolicy, allowTemplateFromDomModule } from '../utils/settings.js';\nimport { dedupingMixin } from '../utils/mixin.js';\nimport { stylesFromTemplate, stylesFromModuleImports } from '../utils/style-gather.js';\nimport { pathFromUrl, resolveCss, resolveUrl } from '../utils/resolve-url.js';\nimport { DomModule } from '../elements/dom-module.js';\nimport { PropertyEffects } from './property-effects.js';\nimport { PropertiesMixin } from './properties-mixin.js';\n\n/**\n * Current Polymer version in Semver notation.\n * @type {string} Semver notation of the current version of Polymer.\n */\nexport const version = '3.0.5';\n\n/**\n * Element class mixin that provides the core API for Polymer's meta-programming\n * features including template stamping, data-binding, attribute deserialization,\n * and property change observation.\n *\n * Subclassers may provide the following static getters to return metadata\n * used to configure Polymer's features for the class:\n *\n * - `static get is()`: When the template is provided via a `dom-module`,\n * users should return the `dom-module` id from a static `is` getter. If\n * no template is needed or the template is provided directly via the\n * `template` getter, there is no need to define `is` for the element.\n *\n * - `static get template()`: Users may provide the template directly (as\n * opposed to via `dom-module`) by implementing a static `template` getter.\n * The getter must return an `HTMLTemplateElement`.\n *\n * - `static get properties()`: Should return an object describing\n * property-related metadata used by Polymer features (key: property name\n * value: object containing property metadata). Valid keys in per-property\n * metadata include:\n * - `type` (String|Number|Object|Array|...): Used by\n * `attributeChangedCallback` to determine how string-based attributes\n * are deserialized to JavaScript property values.\n * - `notify` (boolean): Causes a change in the property to fire a\n * non-bubbling event called `-changed`. Elements that have\n * enabled two-way binding to the property use this event to observe changes.\n * - `readOnly` (boolean): Creates a getter for the property, but no setter.\n * To set a read-only property, use the private setter method\n * `_setProperty(property, value)`.\n * - `observer` (string): Observer method name that will be called when\n * the property changes. The arguments of the method are\n * `(value, previousValue)`.\n * - `computed` (string): String describing method and dependent properties\n * for computing the value of this property (e.g. `'computeFoo(bar, zot)'`).\n * Computed properties are read-only by default and can only be changed\n * via the return value of the computing method.\n *\n * - `static get observers()`: Array of strings describing multi-property\n * observer methods and their dependent properties (e.g.\n * `'observeABC(a, b, c)'`).\n *\n * The base class provides default implementations for the following standard\n * custom element lifecycle callbacks; users may override these, but should\n * call the super method to ensure\n * - `constructor`: Run when the element is created or upgraded\n * - `connectedCallback`: Run each time the element is connected to the\n * document\n * - `disconnectedCallback`: Run each time the element is disconnected from\n * the document\n * - `attributeChangedCallback`: Run each time an attribute in\n * `observedAttributes` is set or removed (note: this element's default\n * `observedAttributes` implementation will automatically return an array\n * of dash-cased attributes based on `properties`)\n *\n * @mixinFunction\n * @polymer\n * @appliesMixin PropertyEffects\n * @appliesMixin PropertiesMixin\n * @property rootPath {string} Set to the value of `rootPath`,\n * which defaults to the main document path\n * @property importPath {string} Set to the value of the class's static\n * `importPath` property, which defaults to the path of this element's\n * `dom-module` (when `is` is used), but can be overridden for other\n * import strategies.\n * @summary Element class mixin that provides the core API for Polymer's\n * meta-programming features.\n */\nexport const ElementMixin = dedupingMixin(base => {\n\n /**\n * @constructor\n * @extends {base}\n * @implements {Polymer_PropertyEffects}\n * @implements {Polymer_PropertiesMixin}\n * @private\n */\n const polymerElementBase = PropertiesMixin(PropertyEffects(base));\n\n /**\n * Returns a list of properties with default values.\n * This list is created as an optimization since it is a subset of\n * the list returned from `_properties`.\n * This list is used in `_initializeProperties` to set property defaults.\n *\n * @param {PolymerElementConstructor} constructor Element class\n * @return {PolymerElementProperties} Flattened properties for this class\n * that have default values\n * @private\n */\n function propertyDefaults(constructor) {\n if (!constructor.hasOwnProperty(\n JSCompiler_renameProperty('__propertyDefaults', constructor))) {\n constructor.__propertyDefaults = null;\n let props = constructor._properties;\n for (let p in props) {\n let info = props[p];\n if ('value' in info) {\n constructor.__propertyDefaults = constructor.__propertyDefaults || {};\n constructor.__propertyDefaults[p] = info;\n }\n }\n }\n return constructor.__propertyDefaults;\n }\n\n /**\n * Returns a memoized version of the `observers` array.\n * @param {PolymerElementConstructor} constructor Element class\n * @return {Array} Array containing own observers for the given class\n * @protected\n */\n function ownObservers(constructor) {\n if (!constructor.hasOwnProperty(\n JSCompiler_renameProperty('__ownObservers', constructor))) {\n constructor.__ownObservers =\n constructor.hasOwnProperty(JSCompiler_renameProperty('observers', constructor)) ?\n /** @type {PolymerElementConstructor} */ (constructor).observers : null;\n }\n return constructor.__ownObservers;\n }\n\n /**\n * Creates effects for a property.\n *\n * Note, once a property has been set to\n * `readOnly`, `computed`, `reflectToAttribute`, or `notify`\n * these values may not be changed. For example, a subclass cannot\n * alter these settings. However, additional `observers` may be added\n * by subclasses.\n *\n * The info object should contain property metadata as follows:\n *\n * * `type`: {function} type to which an attribute matching the property\n * is deserialized. Note the property is camel-cased from a dash-cased\n * attribute. For example, 'foo-bar' attribute is deserialized to a\n * property named 'fooBar'.\n *\n * * `readOnly`: {boolean} creates a readOnly property and\n * makes a private setter for the private of the form '_setFoo' for a\n * property 'foo',\n *\n * * `computed`: {string} creates a computed property. A computed property\n * is also automatically set to `readOnly: true`. The value is calculated\n * by running a method and arguments parsed from the given string. For\n * example 'compute(foo)' will compute a given property when the\n * 'foo' property changes by executing the 'compute' method. This method\n * must return the computed value.\n *\n * * `reflectToAttribute`: {boolean} If true, the property value is reflected\n * to an attribute of the same name. Note, the attribute is dash-cased\n * so a property named 'fooBar' is reflected as 'foo-bar'.\n *\n * * `notify`: {boolean} sends a non-bubbling notification event when\n * the property changes. For example, a property named 'foo' sends an\n * event named 'foo-changed' with `event.detail` set to the value of\n * the property.\n *\n * * observer: {string} name of a method that runs when the property\n * changes. The arguments of the method are (value, previousValue).\n *\n * Note: Users may want control over modifying property\n * effects via subclassing. For example, a user might want to make a\n * reflectToAttribute property not do so in a subclass. We've chosen to\n * disable this because it leads to additional complication.\n * For example, a readOnly effect generates a special setter. If a subclass\n * disables the effect, the setter would fail unexpectedly.\n * Based on feedback, we may want to try to make effects more malleable\n * and/or provide an advanced api for manipulating them.\n * Also consider adding warnings when an effect cannot be changed.\n *\n * @param {!PolymerElement} proto Element class prototype to add accessors\n * and effects to\n * @param {string} name Name of the property.\n * @param {Object} info Info object from which to create property effects.\n * Supported keys:\n * @param {Object} allProps Flattened map of all properties defined in this\n * element (including inherited properties)\n * @return {void}\n * @private\n */\n function createPropertyFromConfig(proto, name, info, allProps) {\n // computed forces readOnly...\n if (info.computed) {\n info.readOnly = true;\n }\n // Note, since all computed properties are readOnly, this prevents\n // adding additional computed property effects (which leads to a confusing\n // setup where multiple triggers for setting a property)\n // While we do have `hasComputedEffect` this is set on the property's\n // dependencies rather than itself.\n if (info.computed && !proto._hasReadOnlyEffect(name)) {\n proto._createComputedProperty(name, info.computed, allProps);\n }\n if (info.readOnly && !proto._hasReadOnlyEffect(name)) {\n proto._createReadOnlyProperty(name, !info.computed);\n }\n if (info.reflectToAttribute && !proto._hasReflectEffect(name)) {\n proto._createReflectedProperty(name);\n }\n if (info.notify && !proto._hasNotifyEffect(name)) {\n proto._createNotifyingProperty(name);\n }\n // always add observer\n if (info.observer) {\n proto._createPropertyObserver(name, info.observer, allProps[info.observer]);\n }\n // always create the mapping from attribute back to property for deserialization.\n proto._addPropertyToAttributeMap(name);\n }\n\n /**\n * Process all style elements in the element template. Styles with the\n * `include` attribute are processed such that any styles in\n * the associated \"style modules\" are included in the element template.\n * @param {PolymerElementConstructor} klass Element class\n * @param {!HTMLTemplateElement} template Template to process\n * @param {string} is Name of element\n * @param {string} baseURI Base URI for element\n * @private\n */\n function processElementStyles(klass, template, is, baseURI) {\n const templateStyles = template.content.querySelectorAll('style');\n const stylesWithImports = stylesFromTemplate(template);\n // insert styles from at the top of the template\n const linkedStyles = stylesFromModuleImports(is);\n const firstTemplateChild = template.content.firstElementChild;\n for (let idx = 0; idx < linkedStyles.length; idx++) {\n let s = linkedStyles[idx];\n s.textContent = klass._processStyleText(s.textContent, baseURI);\n template.content.insertBefore(s, firstTemplateChild);\n }\n // keep track of the last \"concrete\" style in the template we have encountered\n let templateStyleIndex = 0;\n // ensure all gathered styles are actually in this template.\n for (let i = 0; i < stylesWithImports.length; i++) {\n let s = stylesWithImports[i];\n let templateStyle = templateStyles[templateStyleIndex];\n // if the style is not in this template, it's been \"included\" and\n // we put a clone of it in the template before the style that included it\n if (templateStyle !== s) {\n s = s.cloneNode(true);\n templateStyle.parentNode.insertBefore(s, templateStyle);\n } else {\n templateStyleIndex++;\n }\n s.textContent = klass._processStyleText(s.textContent, baseURI);\n }\n if (window.ShadyCSS) {\n window.ShadyCSS.prepareTemplate(template, is);\n }\n }\n\n /**\n * Look up template from dom-module for element\n *\n * @param {!string} is Element name to look up\n * @return {!HTMLTemplateElement} Template found in dom module, or\n * undefined if not found\n * @protected\n */\n function getTemplateFromDomModule(is) {\n let template = null;\n // Under strictTemplatePolicy in 3.x+, dom-module lookup is only allowed\n // when opted-in via allowTemplateFromDomModule\n if (is && (!strictTemplatePolicy || allowTemplateFromDomModule)) {\n template = DomModule.import(is, 'template');\n // Under strictTemplatePolicy, require any element with an `is`\n // specified to have a dom-module\n if (strictTemplatePolicy && !template) {\n throw new Error(`strictTemplatePolicy: expecting dom-module or null template for ${is}`);\n }\n }\n return template;\n }\n\n /**\n * @polymer\n * @mixinClass\n * @unrestricted\n * @implements {Polymer_ElementMixin}\n */\n class PolymerElement extends polymerElementBase {\n\n /**\n * Current Polymer version in Semver notation.\n * @type {string} Semver notation of the current version of Polymer.\n */\n static get polymerElementVersion() {\n return version;\n }\n\n /**\n * Override of PropertiesMixin _finalizeClass to create observers and\n * find the template.\n * @return {void}\n * @protected\n * @override\n * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do\n */\n static _finalizeClass() {\n super._finalizeClass();\n if (this.hasOwnProperty(\n JSCompiler_renameProperty('is', this)) && this.is) {\n register(this.prototype);\n }\n const observers = ownObservers(this);\n if (observers) {\n this.createObservers(observers, this._properties);\n }\n // note: create \"working\" template that is finalized at instance time\n let template = /** @type {PolymerElementConstructor} */ (this).template;\n if (template) {\n if (typeof template === 'string') {\n console.error('template getter must return HTMLTemplateElement');\n template = null;\n } else {\n template = template.cloneNode(true);\n }\n }\n\n this.prototype._template = template;\n }\n\n /**\n * Override of PropertiesChanged createProperties to create accessors\n * and property effects for all of the properties.\n * @return {void}\n * @protected\n * @override\n */\n static createProperties(props) {\n for (let p in props) {\n createPropertyFromConfig(this.prototype, p, props[p], props);\n }\n }\n\n /**\n * Creates observers for the given `observers` array.\n * Leverages `PropertyEffects` to create observers.\n * @param {Object} observers Array of observer descriptors for\n * this class\n * @param {Object} dynamicFns Object containing keys for any properties\n * that are functions and should trigger the effect when the function\n * reference is changed\n * @return {void}\n * @protected\n */\n static createObservers(observers, dynamicFns) {\n const proto = this.prototype;\n for (let i=0; i < observers.length; i++) {\n proto._createMethodObserver(observers[i], dynamicFns);\n }\n }\n\n /**\n * Returns the template that will be stamped into this element's shadow root.\n *\n * If a `static get is()` getter is defined, the default implementation\n * will return the first `` in a `dom-module` whose `id`\n * matches this element's `is`.\n *\n * Users may override this getter to return an arbitrary template\n * (in which case the `is` getter is unnecessary). The template returned\n * must be an `HTMLTemplateElement`.\n *\n * Note that when subclassing, if the super class overrode the default\n * implementation and the subclass would like to provide an alternate\n * template via a `dom-module`, it should override this getter and\n * return `DomModule.import(this.is, 'template')`.\n *\n * If a subclass would like to modify the super class template, it should\n * clone it rather than modify it in place. If the getter does expensive\n * work such as cloning/modifying a template, it should memoize the\n * template for maximum performance:\n *\n * let memoizedTemplate;\n * class MySubClass extends MySuperClass {\n * static get template() {\n * if (!memoizedTemplate) {\n * memoizedTemplate = super.template.cloneNode(true);\n * let subContent = document.createElement('div');\n * subContent.textContent = 'This came from MySubClass';\n * memoizedTemplate.content.appendChild(subContent);\n * }\n * return memoizedTemplate;\n * }\n * }\n *\n * @return {!HTMLTemplateElement|string} Template to be stamped\n */\n static get template() {\n // Explanation of template-related properties:\n // - constructor.template (this getter): the template for the class.\n // This can come from the prototype (for legacy elements), from a\n // dom-module, or from the super class's template (or can be overridden\n // altogether by the user)\n // - constructor._template: memoized version of constructor.template\n // - prototype._template: working template for the element, which will be\n // parsed and modified in place. It is a cloned version of\n // constructor.template, saved in _finalizeClass(). Note that before\n // this getter is called, for legacy elements this could be from a\n // _template field on the info object passed to Polymer(), a behavior,\n // or set in registered(); once the static getter runs, a clone of it\n // will overwrite it on the prototype as the working template.\n if (!this.hasOwnProperty(JSCompiler_renameProperty('_template', this))) {\n this._template =\n // If user has put template on prototype (e.g. in legacy via registered\n // callback or info object), prefer that first\n this.prototype.hasOwnProperty(JSCompiler_renameProperty('_template', this.prototype)) ?\n this.prototype._template :\n // Look in dom-module associated with this element's is\n (getTemplateFromDomModule(/** @type {PolymerElementConstructor}*/ (this).is) ||\n // Next look for superclass template (call the super impl this\n // way so that `this` points to the superclass)\n Object.getPrototypeOf(/** @type {PolymerElementConstructor}*/ (this).prototype).constructor.template);\n }\n return this._template;\n }\n\n /**\n * Set the template.\n *\n * @param {!HTMLTemplateElement|string} value Template to set.\n */\n static set template(value) {\n this._template = value;\n }\n\n /**\n * Path matching the url from which the element was imported.\n *\n * This path is used to resolve url's in template style cssText.\n * The `importPath` property is also set on element instances and can be\n * used to create bindings relative to the import path.\n *\n * For elements defined in ES modules, users should implement\n * `static get importMeta() { return import.meta; }`, and the default\n * implementation of `importPath` will return `import.meta.url`'s path.\n * For elements defined in HTML imports, this getter will return the path\n * to the document containing a `dom-module` element matching this\n * element's static `is` property.\n *\n * Note, this path should contain a trailing `/`.\n *\n * @return {string} The import path for this element class\n * @suppress {missingProperties}\n */\n static get importPath() {\n if (!this.hasOwnProperty(JSCompiler_renameProperty('_importPath', this))) {\n const meta = this.importMeta;\n if (meta) {\n this._importPath = pathFromUrl(meta.url);\n } else {\n const module = DomModule.import(/** @type {PolymerElementConstructor} */ (this).is);\n this._importPath = (module && module.assetpath) ||\n Object.getPrototypeOf(/** @type {PolymerElementConstructor}*/ (this).prototype).constructor.importPath;\n }\n }\n return this._importPath;\n }\n\n constructor() {\n super();\n /** @type {HTMLTemplateElement} */\n this._template;\n /** @type {string} */\n this._importPath;\n /** @type {string} */\n this.rootPath;\n /** @type {string} */\n this.importPath;\n /** @type {StampedTemplate | HTMLElement | ShadowRoot} */\n this.root;\n /** @type {!Object} */\n this.$;\n }\n\n /**\n * Overrides the default `PropertyAccessors` to ensure class\n * metaprogramming related to property accessors and effects has\n * completed (calls `finalize`).\n *\n * It also initializes any property defaults provided via `value` in\n * `properties` metadata.\n *\n * @return {void}\n * @override\n * @suppress {invalidCasts}\n */\n _initializeProperties() {\n instanceCount++;\n this.constructor.finalize();\n // note: finalize template when we have access to `localName` to\n // avoid dependence on `is` for polyfilling styling.\n this.constructor._finalizeTemplate(/** @type {!HTMLElement} */(this).localName);\n super._initializeProperties();\n // set path defaults\n this.rootPath = rootPath;\n this.importPath = this.constructor.importPath;\n // apply property defaults...\n let p$ = propertyDefaults(this.constructor);\n if (!p$) {\n return;\n }\n for (let p in p$) {\n let info = p$[p];\n // Don't set default value if there is already an own property, which\n // happens when a `properties` property with default but no effects had\n // a property set (e.g. bound) by its host before upgrade\n if (!this.hasOwnProperty(p)) {\n let value = typeof info.value == 'function' ?\n info.value.call(this) :\n info.value;\n // Set via `_setProperty` if there is an accessor, to enable\n // initializing readOnly property defaults\n if (this._hasAccessor(p)) {\n this._setPendingProperty(p, value, true);\n } else {\n this[p] = value;\n }\n }\n }\n }\n\n /**\n * Gather style text for a style element in the template.\n *\n * @param {string} cssText Text containing styling to process\n * @param {string} baseURI Base URI to rebase CSS paths against\n * @return {string} The processed CSS text\n * @protected\n */\n static _processStyleText(cssText, baseURI) {\n return resolveCss(cssText, baseURI);\n }\n\n /**\n * Configures an element `proto` to function with a given `template`.\n * The element name `is` and extends `ext` must be specified for ShadyCSS\n * style scoping.\n *\n * @param {string} is Tag name (or type extension name) for this element\n * @return {void}\n * @protected\n */\n static _finalizeTemplate(is) {\n /** @const {HTMLTemplateElement} */\n const template = this.prototype._template;\n if (template && !template.__polymerFinalized) {\n template.__polymerFinalized = true;\n const importPath = this.importPath;\n const baseURI = importPath ? resolveUrl(importPath) : '';\n // e.g. support `include=\"module-name\"`, and ShadyCSS\n processElementStyles(this, template, is, baseURI);\n this.prototype._bindTemplate(template);\n }\n }\n\n /**\n * Provides a default implementation of the standard Custom Elements\n * `connectedCallback`.\n *\n * The default implementation enables the property effects system and\n * flushes any pending properties, and updates shimmed CSS properties\n * when using the ShadyCSS scoping/custom properties polyfill.\n *\n * @suppress {missingProperties, invalidCasts} Super may or may not implement the callback\n * @return {void}\n */\n connectedCallback() {\n if (window.ShadyCSS && this._template) {\n window.ShadyCSS.styleElement(/** @type {!HTMLElement} */(this));\n }\n super.connectedCallback();\n }\n\n /**\n * Stamps the element template.\n *\n * @return {void}\n * @override\n */\n ready() {\n if (this._template) {\n this.root = this._stampTemplate(this._template);\n this.$ = this.root.$;\n }\n super.ready();\n }\n\n /**\n * Implements `PropertyEffects`'s `_readyClients` call. Attaches\n * element dom by calling `_attachDom` with the dom stamped from the\n * element's template via `_stampTemplate`. Note that this allows\n * client dom to be attached to the element prior to any observers\n * running.\n *\n * @return {void}\n * @override\n */\n _readyClients() {\n if (this._template) {\n this.root = this._attachDom(/** @type {StampedTemplate} */(this.root));\n }\n // The super._readyClients here sets the clients initialized flag.\n // We must wait to do this until after client dom is created/attached\n // so that this flag can be checked to prevent notifications fired\n // during this process from being handled before clients are ready.\n super._readyClients();\n }\n\n\n /**\n * Attaches an element's stamped dom to itself. By default,\n * this method creates a `shadowRoot` and adds the dom to it.\n * However, this method may be overridden to allow an element\n * to put its dom in another location.\n *\n * @throws {Error}\n * @suppress {missingReturn}\n * @param {StampedTemplate} dom to attach to the element.\n * @return {ShadowRoot} node to which the dom has been attached.\n */\n _attachDom(dom) {\n if (this.attachShadow) {\n if (dom) {\n if (!this.shadowRoot) {\n this.attachShadow({mode: 'open'});\n }\n this.shadowRoot.appendChild(dom);\n return this.shadowRoot;\n }\n return null;\n } else {\n throw new Error('ShadowDOM not available. ' +\n // TODO(sorvell): move to compile-time conditional when supported\n 'PolymerElement can create dom as children instead of in ' +\n 'ShadowDOM by setting `this.root = this;\\` before \\`ready\\`.');\n }\n }\n\n /**\n * When using the ShadyCSS scoping and custom property shim, causes all\n * shimmed styles in this element (and its subtree) to be updated\n * based on current custom property values.\n *\n * The optional parameter overrides inline custom property styles with an\n * object of properties where the keys are CSS properties, and the values\n * are strings.\n *\n * Example: `this.updateStyles({'--color': 'blue'})`\n *\n * These properties are retained unless a value of `null` is set.\n *\n * Note: This function does not support updating CSS mixins.\n * You can not dynamically change the value of an `@apply`.\n *\n * @param {Object=} properties Bag of custom property key/values to\n * apply to this element.\n * @return {void}\n * @suppress {invalidCasts}\n */\n updateStyles(properties) {\n if (window.ShadyCSS) {\n window.ShadyCSS.styleSubtree(/** @type {!HTMLElement} */(this), properties);\n }\n }\n\n /**\n * Rewrites a given URL relative to a base URL. The base URL defaults to\n * the original location of the document containing the `dom-module` for\n * this element. This method will return the same URL before and after\n * bundling.\n *\n * Note that this function performs no resolution for URLs that start\n * with `/` (absolute URLs) or `#` (hash identifiers). For general purpose\n * URL resolution, use `window.URL`.\n *\n * @param {string} url URL to resolve.\n * @param {string=} base Optional base URL to resolve against, defaults\n * to the element's `importPath`\n * @return {string} Rewritten URL relative to base\n */\n resolveUrl(url, base) {\n if (!base && this.importPath) {\n base = resolveUrl(this.importPath);\n }\n return resolveUrl(url, base);\n }\n\n /**\n * Overrides `PropertyAccessors` to add map of dynamic functions on\n * template info, for consumption by `PropertyEffects` template binding\n * code. This map determines which method templates should have accessors\n * created for them.\n *\n * @override\n * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do\n */\n static _parseTemplateContent(template, templateInfo, nodeInfo) {\n templateInfo.dynamicFns = templateInfo.dynamicFns || this._properties;\n return super._parseTemplateContent(template, templateInfo, nodeInfo);\n }\n\n }\n\n return PolymerElement;\n});\n\n/**\n * Total number of Polymer element instances created.\n * @type {number}\n */\nexport let instanceCount = 0;\n\n/**\n * Array of Polymer element classes that have been finalized.\n * @type {Array}\n */\nexport const registrations = [];\n\n/**\n * @param {!PolymerElementConstructor} prototype Element prototype to log\n * @this {this}\n * @private\n */\nfunction _regLog(prototype) {\n console.log('[' + prototype.is + ']: registered');\n}\n\n/**\n * Registers a class prototype for telemetry purposes.\n * @param {HTMLElement} prototype Element prototype to register\n * @this {this}\n * @protected\n */\nexport function register(prototype) {\n registrations.push(prototype);\n}\n\n/**\n * Logs all elements registered with an `is` to the console.\n * @public\n * @this {this}\n */\nexport function dumpRegistrations() {\n registrations.forEach(_regLog);\n}\n\n/**\n * When using the ShadyCSS scoping and custom property shim, causes all\n * shimmed `styles` (via `custom-style`) in the document (and its subtree)\n * to be updated based on current custom property values.\n *\n * The optional parameter overrides inline custom property styles with an\n * object of properties where the keys are CSS properties, and the values\n * are strings.\n *\n * Example: `updateStyles({'--color': 'blue'})`\n *\n * These properties are retained unless a value of `null` is set.\n *\n * @param {Object=} props Bag of custom property key/values to\n * apply to the document.\n * @return {void}\n */\nexport const updateStyles = function(props) {\n if (window.ShadyCSS) {\n window.ShadyCSS.styleDocument(props);\n }\n};\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\n\nimport {IronMeta} from '@polymer/iron-meta/iron-meta.js';\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\nimport {dom} from '@polymer/polymer/lib/legacy/polymer.dom.js';\n/**\n * The `iron-iconset-svg` element allows users to define their own icon sets\n * that contain svg icons. The svg icon elements should be children of the\n * `iron-iconset-svg` element. Multiple icons should be given distinct id's.\n *\n * Using svg elements to create icons has a few advantages over traditional\n * bitmap graphics like jpg or png. Icons that use svg are vector based so\n * they are resolution independent and should look good on any device. They\n * are stylable via css. Icons can be themed, colorized, and even animated.\n *\n * Example:\n *\n * \n * \n * \n *\n * This will automatically register the icon set \"my-svg-icons\" to the iconset\n * database. To use these icons from within another element, make a\n * `iron-iconset` element and call the `byId` method\n * to retrieve a given iconset. To apply a particular icon inside an\n * element use the `applyIcon` method. For example:\n *\n * iconset.applyIcon(iconNode, 'car');\n *\n * @element iron-iconset-svg\n * @demo demo/index.html\n * @implements {Polymer.Iconset}\n */\nPolymer({\n is: 'iron-iconset-svg',\n\n properties: {\n\n /**\n * The name of the iconset.\n */\n name: {type: String, observer: '_nameChanged'},\n\n /**\n * The size of an individual icon. Note that icons must be square.\n */\n size: {type: Number, value: 24},\n\n /**\n * Set to true to enable mirroring of icons where specified when they are\n * stamped. Icons that should be mirrored should be decorated with a\n * `mirror-in-rtl` attribute.\n *\n * NOTE: For performance reasons, direction will be resolved once per\n * document per iconset, so moving icons in and out of RTL subtrees will\n * not cause their mirrored state to change.\n */\n rtlMirroring: {type: Boolean, value: false},\n\n /**\n * Set to true to measure RTL based on the dir attribute on the body or\n * html elements (measured on document.body or document.documentElement as\n * available).\n */\n useGlobalRtlAttribute: {type: Boolean, value: false}\n },\n\n created: function() {\n this._meta = new IronMeta({type: 'iconset', key: null, value: null});\n },\n\n attached: function() {\n this.style.display = 'none';\n },\n\n /**\n * Construct an array of all icon names in this iconset.\n *\n * @return {!Array} Array of icon names.\n */\n getIconNames: function() {\n this._icons = this._createIconMap();\n return Object.keys(this._icons).map(function(n) {\n return this.name + ':' + n;\n }, this);\n },\n\n /**\n * Applies an icon to the given element.\n *\n * An svg icon is prepended to the element's shadowRoot if it exists,\n * otherwise to the element itself.\n *\n * If RTL mirroring is enabled, and the icon is marked to be mirrored in\n * RTL, the element will be tested (once and only once ever for each\n * iconset) to determine the direction of the subtree the element is in.\n * This direction will apply to all future icon applications, although only\n * icons marked to be mirrored will be affected.\n *\n * @method applyIcon\n * @param {Element} element Element to which the icon is applied.\n * @param {string} iconName Name of the icon to apply.\n * @return {?Element} The svg element which renders the icon.\n */\n applyIcon: function(element, iconName) {\n // Remove old svg element\n this.removeIcon(element);\n // install new svg element\n var svg = this._cloneIcon(\n iconName, this.rtlMirroring && this._targetIsRTL(element));\n if (svg) {\n // insert svg element into shadow root, if it exists\n var pde = dom(element.root || element);\n pde.insertBefore(svg, pde.childNodes[0]);\n return element._svgIcon = svg;\n }\n return null;\n },\n\n /**\n * Remove an icon from the given element by undoing the changes effected\n * by `applyIcon`.\n *\n * @param {Element} element The element from which the icon is removed.\n */\n removeIcon: function(element) {\n // Remove old svg element\n if (element._svgIcon) {\n dom(element.root || element).removeChild(element._svgIcon);\n element._svgIcon = null;\n }\n },\n\n /**\n * Measures and memoizes the direction of the element. Note that this\n * measurement is only done once and the result is memoized for future\n * invocations.\n */\n _targetIsRTL: function(target) {\n if (this.__targetIsRTL == null) {\n if (this.useGlobalRtlAttribute) {\n var globalElement =\n (document.body && document.body.hasAttribute('dir')) ?\n document.body :\n document.documentElement;\n\n this.__targetIsRTL = globalElement.getAttribute('dir') === 'rtl';\n } else {\n if (target && target.nodeType !== Node.ELEMENT_NODE) {\n target = target.host;\n }\n\n this.__targetIsRTL =\n target && window.getComputedStyle(target)['direction'] === 'rtl';\n }\n }\n\n return this.__targetIsRTL;\n },\n\n /**\n *\n * When name is changed, register iconset metadata\n *\n */\n _nameChanged: function() {\n this._meta.value = null;\n this._meta.key = this.name;\n this._meta.value = this;\n\n this.async(function() {\n this.fire('iron-iconset-added', this, {node: window});\n });\n },\n\n /**\n * Create a map of child SVG elements by id.\n *\n * @return {!Object} Map of id's to SVG elements.\n */\n _createIconMap: function() {\n // Objects chained to Object.prototype (`{}`) have members. Specifically,\n // on FF there is a `watch` method that confuses the icon map, so we\n // need to use a null-based object here.\n var icons = Object.create(null);\n dom(this).querySelectorAll('[id]').forEach(function(icon) {\n icons[icon.id] = icon;\n });\n return icons;\n },\n\n /**\n * Produce installable clone of the SVG element matching `id` in this\n * iconset, or `undefined` if there is no matching element.\n *\n * @return {Element} Returns an installable clone of the SVG element\n * matching `id`.\n */\n _cloneIcon: function(id, mirrorAllowed) {\n // create the icon map on-demand, since the iconset itself has no discrete\n // signal to know when it's children are fully parsed\n this._icons = this._icons || this._createIconMap();\n return this._prepareSvgClone(this._icons[id], this.size, mirrorAllowed);\n },\n\n /**\n * @param {Element} sourceSvg\n * @param {number} size\n * @param {Boolean} mirrorAllowed\n * @return {Element}\n */\n _prepareSvgClone: function(sourceSvg, size, mirrorAllowed) {\n if (sourceSvg) {\n var content = sourceSvg.cloneNode(true),\n svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg'),\n viewBox =\n content.getAttribute('viewBox') || '0 0 ' + size + ' ' + size,\n cssText =\n 'pointer-events: none; display: block; width: 100%; height: 100%;';\n\n if (mirrorAllowed && content.hasAttribute('mirror-in-rtl')) {\n cssText +=\n '-webkit-transform:scale(-1,1);transform:scale(-1,1);transform-origin:center;';\n }\n\n svg.setAttribute('viewBox', viewBox);\n svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');\n svg.setAttribute('focusable', 'false');\n // TODO(dfreedm): `pointer-events: none` works around\n // https://crbug.com/370136\n // TODO(sjmiles): inline style may not be ideal, but avoids requiring a\n // shadow-root\n svg.style.cssText = cssText;\n svg.appendChild(content).removeAttribute('id');\n return svg;\n }\n return null;\n }\n\n});\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nexport const nativeShadow = !(window['ShadyDOM'] && window['ShadyDOM']['inUse']);\nlet nativeCssVariables_;\n\n/**\n * @param {(ShadyCSSOptions | ShadyCSSInterface)=} settings\n */\nfunction calcCssVariables(settings) {\n if (settings && settings['shimcssproperties']) {\n nativeCssVariables_ = false;\n } else {\n // chrome 49 has semi-working css vars, check if box-shadow works\n // safari 9.1 has a recalc bug: https://bugs.webkit.org/show_bug.cgi?id=155782\n // However, shim css custom properties are only supported with ShadyDOM enabled,\n // so fall back on native if we do not detect ShadyDOM\n // Edge 15: custom properties used in ::before and ::after will also be used in the parent element\n // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12414257/\n nativeCssVariables_ = nativeShadow || Boolean(!navigator.userAgent.match(/AppleWebKit\\/601|Edge\\/15/) &&\n window.CSS && CSS.supports && CSS.supports('box-shadow', '0 0 0 var(--foo)'));\n }\n}\n\n/** @type {string | undefined} */\nexport let cssBuild;\nif (window.ShadyCSS && window.ShadyCSS.cssBuild !== undefined) {\n cssBuild = window.ShadyCSS.cssBuild;\n}\n\n/** @type {boolean} */\nexport const disableRuntime = Boolean(window.ShadyCSS && window.ShadyCSS.disableRuntime);\n\nif (window.ShadyCSS && window.ShadyCSS.nativeCss !== undefined) {\n nativeCssVariables_ = window.ShadyCSS.nativeCss;\n} else if (window.ShadyCSS) {\n calcCssVariables(window.ShadyCSS);\n // reset window variable to let ShadyCSS API take its place\n window.ShadyCSS = undefined;\n} else {\n calcCssVariables(window['WebComponents'] && window['WebComponents']['flags']);\n}\n\n// Hack for type error under new type inference which doesn't like that\n// nativeCssVariables is updated in a function and assigns the type\n// `function(): ?` instead of `boolean`.\nexport const nativeCssVariables = /** @type {boolean} */(nativeCssVariables_);","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nexport const VAR_ASSIGN = /(?:^|[;\\s{]\\s*)(--[\\w-]*?)\\s*:\\s*(?:((?:'(?:\\\\'|.)*?'|\"(?:\\\\\"|.)*?\"|\\([^)]*?\\)|[^};{])+)|\\{([^}]*)\\}(?:(?=[;\\s}])|$))/gi;\nexport const MIXIN_MATCH = /(?:^|\\W+)@apply\\s*\\(?([^);\\n]*)\\)?/gi;\nexport const VAR_CONSUMED = /(--[\\w-]+)\\s*([:,;)]|$)/gi;\nexport const ANIMATION_MATCH = /(animation\\s*:)|(animation-name\\s*:)/;\nexport const MEDIA_MATCH = /@media\\s(.*)/;\nexport const IS_VAR = /^--/;\nexport const BRACKETED = /\\{[^}]*\\}/g;\nexport const HOST_PREFIX = '(?:^|[^.#[:])';\nexport const HOST_SUFFIX = '($|[.:[\\\\s>+~])';\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nimport { MIXIN_MATCH, VAR_ASSIGN } from './common-regex.js';\n\n/**\n * @param {Element} element\n * @param {Object=} properties\n */\nexport function updateNativeProperties(element, properties) {\n // remove previous properties\n for (let p in properties) {\n // NOTE: for bc with shim, don't apply null values.\n if (p === null) {\n element.style.removeProperty(p);\n } else {\n element.style.setProperty(p, properties[p]);\n }\n }\n}\n\n/**\n * @param {Element} element\n * @param {string} property\n * @return {string}\n */\nexport function getComputedStyleValue(element, property) {\n /**\n * @const {string}\n */\n const value = window.getComputedStyle(element).getPropertyValue(property);\n if (!value) {\n return '';\n } else {\n return value.trim();\n }\n}\n\n/**\n * return true if `cssText` contains a mixin definition or consumption\n * @param {string} cssText\n * @return {boolean}\n */\nexport function detectMixin(cssText) {\n const has = MIXIN_MATCH.test(cssText) || VAR_ASSIGN.test(cssText);\n // reset state of the regexes\n MIXIN_MATCH.lastIndex = 0;\n VAR_ASSIGN.lastIndex = 0;\n return has;\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { resolveUrl, pathFromUrl } from '../utils/resolve-url.js';\nimport { strictTemplatePolicy } from '../utils/settings.js';\n\nlet modules = {};\nlet lcModules = {};\n/**\n * Sets a dom-module into the global registry by id.\n *\n * @param {string} id dom-module id\n * @param {DomModule} module dom-module instance\n * @return {void}\n */\nfunction setModule(id, module) {\n // store id separate from lowercased id so that\n // in all cases mixedCase id will stored distinctly\n // and lowercase version is a fallback\n modules[id] = lcModules[id.toLowerCase()] = module;\n}\n/**\n * Retrieves a dom-module from the global registry by id.\n *\n * @param {string} id dom-module id\n * @return {DomModule!} dom-module instance\n */\nfunction findModule(id) {\n return modules[id] || lcModules[id.toLowerCase()];\n}\n\nfunction styleOutsideTemplateCheck(inst) {\n if (inst.querySelector('style')) {\n console.warn('dom-module %s has style outside template', inst.id);\n }\n}\n\n/**\n * The `dom-module` element registers the dom it contains to the name given\n * by the module's id attribute. It provides a unified database of dom\n * accessible via its static `import` API.\n *\n * A key use case of `dom-module` is for providing custom element ``s\n * via HTML imports that are parsed by the native HTML parser, that can be\n * relocated during a bundling pass and still looked up by `id`.\n *\n * Example:\n *\n * \n * ![](\"stuff.png\")
\n * \n *\n * Then in code in some other location that cannot access the dom-module above\n *\n * let img = customElements.get('dom-module').import('foo', 'img');\n *\n * @customElement\n * @extends HTMLElement\n * @summary Custom element that provides a registry of relocatable DOM content\n * by `id` that is agnostic to bundling.\n * @unrestricted\n */\nexport class DomModule extends HTMLElement {\n\n static get observedAttributes() { return ['id']; }\n\n /**\n * Retrieves the element specified by the css `selector` in the module\n * registered by `id`. For example, this.import('foo', 'img');\n * @param {string} id The id of the dom-module in which to search.\n * @param {string=} selector The css selector by which to find the element.\n * @return {Element} Returns the element which matches `selector` in the\n * module registered at the specified `id`.\n *\n * @export\n * @nocollapse Referred to indirectly in style-gather.js\n */\n static import(id, selector) {\n if (id) {\n let m = findModule(id);\n if (m && selector) {\n return m.querySelector(selector);\n }\n return m;\n }\n return null;\n }\n\n /* eslint-disable no-unused-vars */\n /**\n * @param {string} name Name of attribute.\n * @param {?string} old Old value of attribute.\n * @param {?string} value Current value of attribute.\n * @param {?string} namespace Attribute namespace.\n * @return {void}\n * @override\n */\n attributeChangedCallback(name, old, value, namespace) {\n if (old !== value) {\n this.register();\n }\n }\n /* eslint-enable no-unused-args */\n\n /**\n * The absolute URL of the original location of this `dom-module`.\n *\n * This value will differ from this element's `ownerDocument` in the\n * following ways:\n * - Takes into account any `assetpath` attribute added during bundling\n * to indicate the original location relative to the bundled location\n * - Uses the HTMLImports polyfill's `importForElement` API to ensure\n * the path is relative to the import document's location since\n * `ownerDocument` is not currently polyfilled\n */\n get assetpath() {\n // Don't override existing assetpath.\n if (!this.__assetpath) {\n // note: assetpath set via an attribute must be relative to this\n // element's location; accomodate polyfilled HTMLImports\n const owner = window.HTMLImports && HTMLImports.importForElement ?\n HTMLImports.importForElement(this) || document : this.ownerDocument;\n const url = resolveUrl(\n this.getAttribute('assetpath') || '', owner.baseURI);\n this.__assetpath = pathFromUrl(url);\n }\n return this.__assetpath;\n }\n\n /**\n * Registers the dom-module at a given id. This method should only be called\n * when a dom-module is imperatively created. For\n * example, `document.createElement('dom-module').register('foo')`.\n * @param {string=} id The id at which to register the dom-module.\n * @return {void}\n */\n register(id) {\n id = id || this.id;\n if (id) {\n // Under strictTemplatePolicy, reject and null out any re-registered\n // dom-module since it is ambiguous whether first-in or last-in is trusted\n if (strictTemplatePolicy && findModule(id) !== undefined) {\n setModule(id, null);\n throw new Error(`strictTemplatePolicy: dom-module ${id} re-registered`);\n }\n this.id = id;\n setModule(id, this);\n styleOutsideTemplateCheck(this);\n }\n }\n}\n\nDomModule.prototype['modules'] = modules;\n\ncustomElements.define('dom-module', DomModule);\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * Module for scheduling flushable pre-render and post-render tasks.\n *\n * @summary Module for scheduling flushable pre-render and post-render tasks.\n */\n\nimport './boot.js';\n\nlet scheduled = false;\nlet beforeRenderQueue = [];\nlet afterRenderQueue = [];\n\nfunction schedule() {\n scheduled = true;\n // before next render\n requestAnimationFrame(function() {\n scheduled = false;\n flushQueue(beforeRenderQueue);\n // after the render\n setTimeout(function() {\n runQueue(afterRenderQueue);\n });\n });\n}\n\nfunction flushQueue(queue) {\n while (queue.length) {\n callMethod(queue.shift());\n }\n}\n\nfunction runQueue(queue) {\n for (let i=0, l=queue.length; i < l; i++) {\n callMethod(queue.shift());\n }\n}\n\nfunction callMethod(info) {\n const context = info[0];\n const callback = info[1];\n const args = info[2];\n try {\n callback.apply(context, args);\n } catch(e) {\n setTimeout(() => {\n throw e;\n });\n }\n}\n\n/**\n * Flushes all `beforeNextRender` tasks, followed by all `afterNextRender`\n * tasks.\n *\n * @return {void}\n */\nexport function flush() {\n while (beforeRenderQueue.length || afterRenderQueue.length) {\n flushQueue(beforeRenderQueue);\n flushQueue(afterRenderQueue);\n }\n scheduled = false;\n}\n\n\n/**\n * Enqueues a callback which will be run before the next render, at\n * `requestAnimationFrame` timing.\n *\n * This method is useful for enqueuing work that requires DOM measurement,\n * since measurement may not be reliable in custom element callbacks before\n * the first render, as well as for batching measurement tasks in general.\n *\n * Tasks in this queue may be flushed by calling `flush()`.\n *\n * @param {*} context Context object the callback function will be bound to\n * @param {function(...*):void} callback Callback function\n * @param {!Array=} args An array of arguments to call the callback function with\n * @return {void}\n */\nexport function beforeNextRender(context, callback, args) {\n if (!scheduled) {\n schedule();\n }\n beforeRenderQueue.push([context, callback, args]);\n}\n\n/**\n * Enqueues a callback which will be run after the next render, equivalent\n * to one task (`setTimeout`) after the next `requestAnimationFrame`.\n *\n * This method is useful for tuning the first-render performance of an\n * element or application by deferring non-critical work until after the\n * first paint. Typical non-render-critical work may include adding UI\n * event listeners and aria attributes.\n *\n * @param {*} context Context object the callback function will be bound to\n * @param {function(...*):void} callback Callback function\n * @param {!Array=} args An array of arguments to call the callback function with\n * @return {void}\n */\nexport function afterNextRender(context, callback, args) {\n if (!scheduled) {\n schedule();\n }\n afterRenderQueue.push([context, callback, args]);\n}\n\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\n\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\n\nexport class IronMeta {\n /**\n * @param {{\n * type: (string|null|undefined),\n * key: (string|null|undefined),\n * value: *,\n * }=} options\n */\n constructor(options) {\n IronMeta[' '](options);\n\n /** @type {string} */\n this.type = (options && options.type) || 'default';\n /** @type {string|null|undefined} */\n this.key = options && options.key;\n if (options && 'value' in options) {\n /** @type {*} */\n this.value = options.value;\n }\n }\n\n /** @return {*} */\n get value() {\n var type = this.type;\n var key = this.key;\n\n if (type && key) {\n return IronMeta.types[type] && IronMeta.types[type][key];\n }\n }\n\n /** @param {*} value */\n set value(value) {\n var type = this.type;\n var key = this.key;\n\n if (type && key) {\n type = IronMeta.types[type] = IronMeta.types[type] || {};\n if (value == null) {\n delete type[key];\n } else {\n type[key] = value;\n }\n }\n }\n\n /** @return {!Array<*>} */\n get list() {\n var type = this.type;\n\n if (type) {\n var items = IronMeta.types[this.type];\n if (!items) {\n return [];\n }\n\n return Object.keys(items).map(function(key) {\n return metaDatas[this.type][key];\n }, this);\n }\n }\n\n /**\n * @param {string} key\n * @return {*}\n */\n byKey(key) {\n this.key = key;\n return this.value;\n }\n};\n\n// This function is used to convince Closure not to remove constructor calls\n// for instances that are not held anywhere. For example, when\n// `new IronMeta({...})` is used only for the side effect of adding a value.\nIronMeta[' '] = function() {};\n\nIronMeta.types = {};\n\nvar metaDatas = IronMeta.types;\n\n/**\n`iron-meta` is a generic element you can use for sharing information across the\nDOM tree. It uses [monostate pattern](http://c2.com/cgi/wiki?MonostatePattern)\nsuch that any instance of iron-meta has access to the shared information. You\ncan use `iron-meta` to share whatever you want (or create an extension [like\nx-meta] for enhancements).\n\nThe `iron-meta` instances containing your actual data can be loaded in an\nimport, or constructed in any way you see fit. The only requirement is that you\ncreate them before you try to access them.\n\nExamples:\n\nIf I create an instance like this:\n\n {\n\n /**\n * @polymer\n * @mixinClass\n * @implements {Polymer_TemplateStamp}\n */\n class TemplateStamp extends superClass {\n\n /**\n * Scans a template to produce template metadata.\n *\n * Template-specific metadata are stored in the object returned, and node-\n * specific metadata are stored in objects in its flattened `nodeInfoList`\n * array. Only nodes in the template that were parsed as nodes of\n * interest contain an object in `nodeInfoList`. Each `nodeInfo` object\n * contains an `index` (`childNodes` index in parent) and optionally\n * `parent`, which points to node info of its parent (including its index).\n *\n * The template metadata object returned from this method has the following\n * structure (many fields optional):\n *\n * ```js\n * {\n * // Flattened list of node metadata (for nodes that generated metadata)\n * nodeInfoList: [\n * {\n * // `id` attribute for any nodes with id's for generating `$` map\n * id: {string},\n * // `on-event=\"handler\"` metadata\n * events: [\n * {\n * name: {string}, // event name\n * value: {string}, // handler method name\n * }, ...\n * ],\n * // Notes when the template contained a `` for shady DOM\n * // optimization purposes\n * hasInsertionPoint: {boolean},\n * // For nested ``` nodes, nested template metadata\n * templateInfo: {object}, // nested template metadata\n * // Metadata to allow efficient retrieval of instanced node\n * // corresponding to this metadata\n * parentInfo: {number}, // reference to parent nodeInfo>\n * parentIndex: {number}, // index in parent's `childNodes` collection\n * infoIndex: {number}, // index of this `nodeInfo` in `templateInfo.nodeInfoList`\n * },\n * ...\n * ],\n * // When true, the template had the `strip-whitespace` attribute\n * // or was nested in a template with that setting\n * stripWhitespace: {boolean},\n * // For nested templates, nested template content is moved into\n * // a document fragment stored here; this is an optimization to\n * // avoid the cost of nested template cloning\n * content: {DocumentFragment}\n * }\n * ```\n *\n * This method kicks off a recursive treewalk as follows:\n *\n * ```\n * _parseTemplate <---------------------+\n * _parseTemplateContent |\n * _parseTemplateNode <------------|--+\n * _parseTemplateNestedTemplate --+ |\n * _parseTemplateChildNodes ---------+\n * _parseTemplateNodeAttributes\n * _parseTemplateNodeAttribute\n *\n * ```\n *\n * These methods may be overridden to add custom metadata about templates\n * to either `templateInfo` or `nodeInfo`.\n *\n * Note that this method may be destructive to the template, in that\n * e.g. event annotations may be removed after being noted in the\n * template metadata.\n *\n * @param {!HTMLTemplateElement} template Template to parse\n * @param {TemplateInfo=} outerTemplateInfo Template metadata from the outer\n * template, for parsing nested templates\n * @return {!TemplateInfo} Parsed template metadata\n */\n static _parseTemplate(template, outerTemplateInfo) {\n // since a template may be re-used, memo-ize metadata\n if (!template._templateInfo) {\n let templateInfo = template._templateInfo = {};\n templateInfo.nodeInfoList = [];\n templateInfo.stripWhiteSpace =\n (outerTemplateInfo && outerTemplateInfo.stripWhiteSpace) ||\n template.hasAttribute('strip-whitespace');\n this._parseTemplateContent(template, templateInfo, {parent: null});\n }\n return template._templateInfo;\n }\n\n static _parseTemplateContent(template, templateInfo, nodeInfo) {\n return this._parseTemplateNode(template.content, templateInfo, nodeInfo);\n }\n\n /**\n * Parses template node and adds template and node metadata based on\n * the current node, and its `childNodes` and `attributes`.\n *\n * This method may be overridden to add custom node or template specific\n * metadata based on this node.\n *\n * @param {Node} node Node to parse\n * @param {!TemplateInfo} templateInfo Template metadata for current template\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNode(node, templateInfo, nodeInfo) {\n let noted;\n let element = /** @type {Element} */(node);\n if (element.localName == 'template' && !element.hasAttribute('preserve-content')) {\n noted = this._parseTemplateNestedTemplate(element, templateInfo, nodeInfo) || noted;\n } else if (element.localName === 'slot') {\n // For ShadyDom optimization, indicating there is an insertion point\n templateInfo.hasInsertionPoint = true;\n }\n if (element.firstChild) {\n noted = this._parseTemplateChildNodes(element, templateInfo, nodeInfo) || noted;\n }\n if (element.hasAttributes && element.hasAttributes()) {\n noted = this._parseTemplateNodeAttributes(element, templateInfo, nodeInfo) || noted;\n }\n return noted;\n }\n\n /**\n * Parses template child nodes for the given root node.\n *\n * This method also wraps whitelisted legacy template extensions\n * (`is=\"dom-if\"` and `is=\"dom-repeat\"`) with their equivalent element\n * wrappers, collapses text nodes, and strips whitespace from the template\n * if the `templateInfo.stripWhitespace` setting was provided.\n *\n * @param {Node} root Root node whose `childNodes` will be parsed\n * @param {!TemplateInfo} templateInfo Template metadata for current template\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @return {void}\n */\n static _parseTemplateChildNodes(root, templateInfo, nodeInfo) {\n if (root.localName === 'script' || root.localName === 'style') {\n return;\n }\n for (let node=root.firstChild, parentIndex=0, next; node; node=next) {\n // Wrap templates\n if (node.localName == 'template') {\n node = wrapTemplateExtension(node);\n }\n // collapse adjacent textNodes: fixes an IE issue that can cause\n // text nodes to be inexplicably split =(\n // note that root.normalize() should work but does not so we do this\n // manually.\n next = node.nextSibling;\n if (node.nodeType === Node.TEXT_NODE) {\n let /** Node */ n = next;\n while (n && (n.nodeType === Node.TEXT_NODE)) {\n node.textContent += n.textContent;\n next = n.nextSibling;\n root.removeChild(n);\n n = next;\n }\n // optionally strip whitespace\n if (templateInfo.stripWhiteSpace && !node.textContent.trim()) {\n root.removeChild(node);\n continue;\n }\n }\n let childInfo = { parentIndex, parentInfo: nodeInfo };\n if (this._parseTemplateNode(node, templateInfo, childInfo)) {\n childInfo.infoIndex = templateInfo.nodeInfoList.push(/** @type {!NodeInfo} */(childInfo)) - 1;\n }\n // Increment if not removed\n if (node.parentNode) {\n parentIndex++;\n }\n }\n }\n\n /**\n * Parses template content for the given nested ``.\n *\n * Nested template info is stored as `templateInfo` in the current node's\n * `nodeInfo`. `template.content` is removed and stored in `templateInfo`.\n * It will then be the responsibility of the host to set it back to the\n * template and for users stamping nested templates to use the\n * `_contentForTemplate` method to retrieve the content for this template\n * (an optimization to avoid the cost of cloning nested template content).\n *\n * @param {HTMLTemplateElement} node Node to parse (a )\n * @param {TemplateInfo} outerTemplateInfo Template metadata for current template\n * that includes the template `node`\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNestedTemplate(node, outerTemplateInfo, nodeInfo) {\n let templateInfo = this._parseTemplate(node, outerTemplateInfo);\n let content = templateInfo.content =\n node.content.ownerDocument.createDocumentFragment();\n content.appendChild(node.content);\n nodeInfo.templateInfo = templateInfo;\n return true;\n }\n\n /**\n * Parses template node attributes and adds node metadata to `nodeInfo`\n * for nodes of interest.\n *\n * @param {Element} node Node to parse\n * @param {TemplateInfo} templateInfo Template metadata for current template\n * @param {NodeInfo} nodeInfo Node metadata for current template.\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNodeAttributes(node, templateInfo, nodeInfo) {\n // Make copy of original attribute list, since the order may change\n // as attributes are added and removed\n let noted = false;\n let attrs = Array.from(node.attributes);\n for (let i=attrs.length-1, a; (a=attrs[i]); i--) {\n noted = this._parseTemplateNodeAttribute(node, templateInfo, nodeInfo, a.name, a.value) || noted;\n }\n return noted;\n }\n\n /**\n * Parses a single template node attribute and adds node metadata to\n * `nodeInfo` for attributes of interest.\n *\n * This implementation adds metadata for `on-event=\"handler\"` attributes\n * and `id` attributes.\n *\n * @param {Element} node Node to parse\n * @param {!TemplateInfo} templateInfo Template metadata for current template\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @param {string} name Attribute name\n * @param {string} value Attribute value\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNodeAttribute(node, templateInfo, nodeInfo, name, value) {\n // events (on-*)\n if (name.slice(0, 3) === 'on-') {\n node.removeAttribute(name);\n nodeInfo.events = nodeInfo.events || [];\n nodeInfo.events.push({\n name: name.slice(3),\n value\n });\n return true;\n }\n // static id\n else if (name === 'id') {\n nodeInfo.id = value;\n return true;\n }\n return false;\n }\n\n /**\n * Returns the `content` document fragment for a given template.\n *\n * For nested templates, Polymer performs an optimization to cache nested\n * template content to avoid the cost of cloning deeply nested templates.\n * This method retrieves the cached content for a given template.\n *\n * @param {HTMLTemplateElement} template Template to retrieve `content` for\n * @return {DocumentFragment} Content fragment\n */\n static _contentForTemplate(template) {\n let templateInfo = /** @type {HTMLTemplateElementWithInfo} */ (template)._templateInfo;\n return (templateInfo && templateInfo.content) || template.content;\n }\n\n /**\n * Clones the provided template content and returns a document fragment\n * containing the cloned dom.\n *\n * The template is parsed (once and memoized) using this library's\n * template parsing features, and provides the following value-added\n * features:\n * * Adds declarative event listeners for `on-event=\"handler\"` attributes\n * * Generates an \"id map\" for all nodes with id's under `$` on returned\n * document fragment\n * * Passes template info including `content` back to templates as\n * `_templateInfo` (a performance optimization to avoid deep template\n * cloning)\n *\n * Note that the memoized template parsing process is destructive to the\n * template: attributes for bindings and declarative event listeners are\n * removed after being noted in notes, and any nested `.content`\n * is removed and stored in notes as well.\n *\n * @param {!HTMLTemplateElement} template Template to stamp\n * @return {!StampedTemplate} Cloned template content\n * @override\n */\n _stampTemplate(template) {\n // Polyfill support: bootstrap the template if it has not already been\n if (template && !template.content &&\n window.HTMLTemplateElement && HTMLTemplateElement.decorate) {\n HTMLTemplateElement.decorate(template);\n }\n let templateInfo = this.constructor._parseTemplate(template);\n let nodeInfo = templateInfo.nodeInfoList;\n let content = templateInfo.content || template.content;\n let dom = /** @type {DocumentFragment} */ (document.importNode(content, true));\n // NOTE: ShadyDom optimization indicating there is an insertion point\n dom.__noInsertionPoint = !templateInfo.hasInsertionPoint;\n let nodes = dom.nodeList = new Array(nodeInfo.length);\n dom.$ = {};\n for (let i=0, l=nodeInfo.length, info; (i-changed')\n * @param {!PropertyEffectsType} inst Host element instance handling the notification event\n * @param {string} fromProp Child element property that was bound\n * @param {string} toPath Host property/path that was bound\n * @param {boolean} negate Whether the binding was negated\n * @return {void}\n * @private\n */\nfunction handleNotification(event, inst, fromProp, toPath, negate) {\n let value;\n let detail = /** @type {Object} */(event.detail);\n let fromPath = detail && detail.path;\n if (fromPath) {\n toPath = translate(fromProp, toPath, fromPath);\n value = detail && detail.value;\n } else {\n value = event.currentTarget[fromProp];\n }\n value = negate ? !value : value;\n if (!inst[TYPES.READ_ONLY] || !inst[TYPES.READ_ONLY][toPath]) {\n if (inst._setPendingPropertyOrPath(toPath, value, true, Boolean(fromPath))\n && (!detail || !detail.queueProperty)) {\n inst._invalidateProperties();\n }\n }\n}\n\n/**\n * Implements the \"reflect\" effect.\n *\n * Sets the attribute named `info.attrName` to the given property value.\n *\n * @param {!PropertyEffectsType} inst The instance the effect will be run on\n * @param {string} property Name of property\n * @param {Object} props Bag of current property changes\n * @param {Object} oldProps Bag of previous values for changed properties\n * @param {?} info Effect metadata\n * @return {void}\n * @private\n */\nfunction runReflectEffect(inst, property, props, oldProps, info) {\n let value = inst.__data[property];\n if (sanitizeDOMValue) {\n value = sanitizeDOMValue(value, info.attrName, 'attribute', /** @type {Node} */(inst));\n }\n inst._propertyToAttribute(property, info.attrName, value);\n}\n\n/**\n * Runs \"computed\" effects for a set of changed properties.\n *\n * This method differs from the generic `runEffects` method in that it\n * continues to run computed effects based on the output of each pass until\n * there are no more newly computed properties. This ensures that all\n * properties that will be computed by the initial set of changes are\n * computed before other effects (binding propagation, observers, and notify)\n * run.\n *\n * @param {!PropertyEffectsType} inst The instance the effect will be run on\n * @param {!Object} changedProps Bag of changed properties\n * @param {!Object} oldProps Bag of previous values for changed properties\n * @param {boolean} hasPaths True with `props` contains one or more paths\n * @return {void}\n * @private\n */\nfunction runComputedEffects(inst, changedProps, oldProps, hasPaths) {\n let computeEffects = inst[TYPES.COMPUTE];\n if (computeEffects) {\n let inputProps = changedProps;\n while (runEffects(inst, computeEffects, inputProps, oldProps, hasPaths)) {\n Object.assign(oldProps, inst.__dataOld);\n Object.assign(changedProps, inst.__dataPending);\n inputProps = inst.__dataPending;\n inst.__dataPending = null;\n }\n }\n}\n\n/**\n * Implements the \"computed property\" effect by running the method with the\n * values of the arguments specified in the `info` object and setting the\n * return value to the computed property specified.\n *\n * @param {!PropertyEffectsType} inst The instance the effect will be run on\n * @param {string} property Name of property\n * @param {Object} props Bag of current property changes\n * @param {Object} oldProps Bag of previous values for changed properties\n * @param {?} info Effect metadata\n * @return {void}\n * @private\n */\nfunction runComputedEffect(inst, property, props, oldProps, info) {\n let result = runMethodEffect(inst, property, props, oldProps, info);\n let computedProp = info.methodInfo;\n if (inst.__dataHasAccessor && inst.__dataHasAccessor[computedProp]) {\n inst._setPendingProperty(computedProp, result, true);\n } else {\n inst[computedProp] = result;\n }\n}\n\n/**\n * Computes path changes based on path links set up using the `linkPaths`\n * API.\n *\n * @param {!PropertyEffectsType} inst The instance whose props are changing\n * @param {string | !Array<(string|number)>} path Path that has changed\n * @param {*} value Value of changed path\n * @return {void}\n * @private\n */\nfunction computeLinkedPaths(inst, path, value) {\n let links = inst.__dataLinkedPaths;\n if (links) {\n let link;\n for (let a in links) {\n let b = links[a];\n if (isDescendant(a, path)) {\n link = translate(a, b, path);\n inst._setPendingPropertyOrPath(link, value, true, true);\n } else if (isDescendant(b, path)) {\n link = translate(b, a, path);\n inst._setPendingPropertyOrPath(link, value, true, true);\n }\n }\n }\n}\n\n// -- bindings ----------------------------------------------\n\n/**\n * Adds binding metadata to the current `nodeInfo`, and binding effects\n * for all part dependencies to `templateInfo`.\n *\n * @param {Function} constructor Class that `_parseTemplate` is currently\n * running on\n * @param {TemplateInfo} templateInfo Template metadata for current template\n * @param {NodeInfo} nodeInfo Node metadata for current template node\n * @param {string} kind Binding kind, either 'property', 'attribute', or 'text'\n * @param {string} target Target property name\n * @param {!Array} parts Array of binding part metadata\n * @param {string=} literal Literal text surrounding binding parts (specified\n * only for 'property' bindings, since these must be initialized as part\n * of boot-up)\n * @return {void}\n * @private\n */\nfunction addBinding(constructor, templateInfo, nodeInfo, kind, target, parts, literal) {\n // Create binding metadata and add to nodeInfo\n nodeInfo.bindings = nodeInfo.bindings || [];\n let /** Binding */ binding = { kind, target, parts, literal, isCompound: (parts.length !== 1) };\n nodeInfo.bindings.push(binding);\n // Add listener info to binding metadata\n if (shouldAddListener(binding)) {\n let {event, negate} = binding.parts[0];\n binding.listenerEvent = event || (camelToDashCase(target) + '-changed');\n binding.listenerNegate = negate;\n }\n // Add \"propagate\" property effects to templateInfo\n let index = templateInfo.nodeInfoList.length;\n for (let i=0; i part.source.length) &&\n (binding.kind == 'property') && !binding.isCompound &&\n node.__isPropertyEffectsClient &&\n node.__dataHasAccessor && node.__dataHasAccessor[binding.target]) {\n let value = props[path];\n path = translate(part.source, binding.target, path);\n if (node._setPendingPropertyOrPath(path, value, false, true)) {\n inst._enqueueClient(node);\n }\n } else {\n let value = info.evaluator._evaluateBinding(inst, part, path, props, oldProps, hasPaths);\n // Propagate value to child\n applyBindingValue(inst, node, binding, part, value);\n }\n}\n\n/**\n * Sets the value for an \"binding\" (binding) effect to a node,\n * either as a property or attribute.\n *\n * @param {!PropertyEffectsType} inst The instance owning the binding effect\n * @param {Node} node Target node for binding\n * @param {!Binding} binding Binding metadata\n * @param {!BindingPart} part Binding part metadata\n * @param {*} value Value to set\n * @return {void}\n * @private\n */\nfunction applyBindingValue(inst, node, binding, part, value) {\n value = computeBindingValue(node, value, binding, part);\n if (sanitizeDOMValue) {\n value = sanitizeDOMValue(value, binding.target, binding.kind, node);\n }\n if (binding.kind == 'attribute') {\n // Attribute binding\n inst._valueToNodeAttribute(/** @type {Element} */(node), value, binding.target);\n } else {\n // Property binding\n let prop = binding.target;\n if (node.__isPropertyEffectsClient &&\n node.__dataHasAccessor && node.__dataHasAccessor[prop]) {\n if (!node[TYPES.READ_ONLY] || !node[TYPES.READ_ONLY][prop]) {\n if (node._setPendingProperty(prop, value)) {\n inst._enqueueClient(node);\n }\n }\n } else {\n inst._setUnmanagedPropertyToNode(node, prop, value);\n }\n }\n}\n\n/**\n * Transforms an \"binding\" effect value based on compound & negation\n * effect metadata, as well as handling for special-case properties\n *\n * @param {Node} node Node the value will be set to\n * @param {*} value Value to set\n * @param {!Binding} binding Binding metadata\n * @param {!BindingPart} part Binding part metadata\n * @return {*} Transformed value to set\n * @private\n */\nfunction computeBindingValue(node, value, binding, part) {\n if (binding.isCompound) {\n let storage = node.__dataCompoundStorage[binding.target];\n storage[part.compoundIndex] = value;\n value = storage.join('');\n }\n if (binding.kind !== 'attribute') {\n // Some browsers serialize `undefined` to `\"undefined\"`\n if (binding.target === 'textContent' ||\n (binding.target === 'value' &&\n (node.localName === 'input' || node.localName === 'textarea'))) {\n value = value == undefined ? '' : value;\n }\n }\n return value;\n}\n\n/**\n * Returns true if a binding's metadata meets all the requirements to allow\n * 2-way binding, and therefore a `-changed` event listener should be\n * added:\n * - used curly braces\n * - is a property (not attribute) binding\n * - is not a textContent binding\n * - is not compound\n *\n * @param {!Binding} binding Binding metadata\n * @return {boolean} True if 2-way listener should be added\n * @private\n */\nfunction shouldAddListener(binding) {\n return Boolean(binding.target) &&\n binding.kind != 'attribute' &&\n binding.kind != 'text' &&\n !binding.isCompound &&\n binding.parts[0].mode === '{';\n}\n\n/**\n * Setup compound binding storage structures, notify listeners, and dataHost\n * references onto the bound nodeList.\n *\n * @param {!PropertyEffectsType} inst Instance that bas been previously bound\n * @param {TemplateInfo} templateInfo Template metadata\n * @return {void}\n * @private\n */\nfunction setupBindings(inst, templateInfo) {\n // Setup compound storage, dataHost, and notify listeners\n let {nodeList, nodeInfoList} = templateInfo;\n if (nodeInfoList.length) {\n for (let i=0; i < nodeInfoList.length; i++) {\n let info = nodeInfoList[i];\n let node = nodeList[i];\n let bindings = info.bindings;\n if (bindings) {\n for (let i=0; i} parts All parts to stringify\n * @return {string} String made from the literal parts\n */\nfunction literalFromParts(parts) {\n let s = '';\n for (let i=0; i} argList Array of argument names\n * @param {!MethodSignature} sig Method signature metadata object\n * @return {!MethodSignature} The updated signature metadata object\n * @private\n */\nfunction parseArgs(argList, sig) {\n sig.args = argList.map(function(rawArg) {\n let arg = parseArg(rawArg);\n if (!arg.literal) {\n sig.static = false;\n }\n return arg;\n }, this);\n return sig;\n}\n\n/**\n * Parses an individual argument, and returns an argument metadata object\n * with the following fields:\n *\n * {\n * value: 'prop', // property/path or literal value\n * literal: false, // whether argument is a literal\n * structured: false, // whether the property is a path\n * rootProperty: 'prop', // the root property of the path\n * wildcard: false // whether the argument was a wildcard '.*' path\n * }\n *\n * @param {string} rawArg The string value of the argument\n * @return {!MethodArg} Argument metadata object\n * @private\n */\nfunction parseArg(rawArg) {\n // clean up whitespace\n let arg = rawArg.trim()\n // replace comma entity with comma\n .replace(/,/g, ',')\n // repair extra escape sequences; note only commas strictly need\n // escaping, but we allow any other char to be escaped since its\n // likely users will do this\n .replace(/\\\\(.)/g, '\\$1')\n ;\n // basic argument descriptor\n let a = {\n name: arg,\n value: '',\n literal: false\n };\n // detect literal value (must be String or Number)\n let fc = arg[0];\n if (fc === '-') {\n fc = arg[1];\n }\n if (fc >= '0' && fc <= '9') {\n fc = '#';\n }\n switch(fc) {\n case \"'\":\n case '\"':\n a.value = arg.slice(1, -1);\n a.literal = true;\n break;\n case '#':\n a.value = Number(arg);\n a.literal = true;\n break;\n }\n // if not literal, look for structured path\n if (!a.literal) {\n a.rootProperty = root(arg);\n // detect structured path (has dots)\n a.structured = isPath(arg);\n if (a.structured) {\n a.wildcard = (arg.slice(-2) == '.*');\n if (a.wildcard) {\n a.name = arg.slice(0, -2);\n }\n }\n }\n return a;\n}\n\n// data api\n\n/**\n * Sends array splice notifications (`.splices` and `.length`)\n *\n * Note: this implementation only accepts normalized paths\n *\n * @param {!PropertyEffectsType} inst Instance to send notifications to\n * @param {Array} array The array the mutations occurred on\n * @param {string} path The path to the array that was mutated\n * @param {Array} splices Array of splice records\n * @return {void}\n * @private\n */\nfunction notifySplices(inst, array, path, splices) {\n let splicesPath = path + '.splices';\n inst.notifyPath(splicesPath, { indexSplices: splices });\n inst.notifyPath(path + '.length', array.length);\n // Null here to allow potentially large splice records to be GC'ed.\n inst.__data[splicesPath] = {indexSplices: null};\n}\n\n/**\n * Creates a splice record and sends an array splice notification for\n * the described mutation\n *\n * Note: this implementation only accepts normalized paths\n *\n * @param {!PropertyEffectsType} inst Instance to send notifications to\n * @param {Array} array The array the mutations occurred on\n * @param {string} path The path to the array that was mutated\n * @param {number} index Index at which the array mutation occurred\n * @param {number} addedCount Number of added items\n * @param {Array} removed Array of removed items\n * @return {void}\n * @private\n */\nfunction notifySplice(inst, array, path, index, addedCount, removed) {\n notifySplices(inst, array, path, [{\n index: index,\n addedCount: addedCount,\n removed: removed,\n object: array,\n type: 'splice'\n }]);\n}\n\n/**\n * Returns an upper-cased version of the string.\n *\n * @param {string} name String to uppercase\n * @return {string} Uppercased string\n * @private\n */\nfunction upper(name) {\n return name[0].toUpperCase() + name.substring(1);\n}\n\n/**\n * Element class mixin that provides meta-programming for Polymer's template\n * binding and data observation (collectively, \"property effects\") system.\n *\n * This mixin uses provides the following key static methods for adding\n * property effects to an element class:\n * - `addPropertyEffect`\n * - `createPropertyObserver`\n * - `createMethodObserver`\n * - `createNotifyingProperty`\n * - `createReadOnlyProperty`\n * - `createReflectedProperty`\n * - `createComputedProperty`\n * - `bindTemplate`\n *\n * Each method creates one or more property accessors, along with metadata\n * used by this mixin's implementation of `_propertiesChanged` to perform\n * the property effects.\n *\n * Underscored versions of the above methods also exist on the element\n * prototype for adding property effects on instances at runtime.\n *\n * Note that this mixin overrides several `PropertyAccessors` methods, in\n * many cases to maintain guarantees provided by the Polymer 1.x features;\n * notably it changes property accessors to be synchronous by default\n * whereas the default when using `PropertyAccessors` standalone is to be\n * async by default.\n *\n * @mixinFunction\n * @polymer\n * @appliesMixin TemplateStamp\n * @appliesMixin PropertyAccessors\n * @summary Element class mixin that provides meta-programming for Polymer's\n * template binding and data observation system.\n */\nexport const PropertyEffects = dedupingMixin(superClass => {\n\n /**\n * @constructor\n * @extends {superClass}\n * @implements {Polymer_PropertyAccessors}\n * @implements {Polymer_TemplateStamp}\n * @unrestricted\n * @private\n */\n const propertyEffectsBase = TemplateStamp(PropertyAccessors(superClass));\n\n /**\n * @polymer\n * @mixinClass\n * @implements {Polymer_PropertyEffects}\n * @extends {propertyEffectsBase}\n * @unrestricted\n */\n class PropertyEffects extends propertyEffectsBase {\n\n constructor() {\n super();\n /** @type {boolean} */\n // Used to identify users of this mixin, ala instanceof\n this.__isPropertyEffectsClient = true;\n /** @type {number} */\n // NOTE: used to track re-entrant calls to `_flushProperties`\n // path changes dirty check against `__dataTemp` only during one \"turn\"\n // and are cleared when `__dataCounter` returns to 0.\n this.__dataCounter = 0;\n /** @type {boolean} */\n this.__dataClientsReady;\n /** @type {Array} */\n this.__dataPendingClients;\n /** @type {Object} */\n this.__dataToNotify;\n /** @type {Object} */\n this.__dataLinkedPaths;\n /** @type {boolean} */\n this.__dataHasPaths;\n /** @type {Object} */\n this.__dataCompoundStorage;\n /** @type {Polymer_PropertyEffects} */\n this.__dataHost;\n /** @type {!Object} */\n this.__dataTemp;\n /** @type {boolean} */\n this.__dataClientsInitialized;\n /** @type {!Object} */\n this.__data;\n /** @type {!Object} */\n this.__dataPending;\n /** @type {!Object} */\n this.__dataOld;\n /** @type {Object} */\n this.__computeEffects;\n /** @type {Object} */\n this.__reflectEffects;\n /** @type {Object} */\n this.__notifyEffects;\n /** @type {Object} */\n this.__propagateEffects;\n /** @type {Object} */\n this.__observeEffects;\n /** @type {Object} */\n this.__readOnly;\n /** @type {!TemplateInfo} */\n this.__templateInfo;\n }\n\n get PROPERTY_EFFECT_TYPES() {\n return TYPES;\n }\n\n /**\n * @return {void}\n */\n _initializeProperties() {\n super._initializeProperties();\n hostStack.registerHost(this);\n this.__dataClientsReady = false;\n this.__dataPendingClients = null;\n this.__dataToNotify = null;\n this.__dataLinkedPaths = null;\n this.__dataHasPaths = false;\n // May be set on instance prior to upgrade\n this.__dataCompoundStorage = this.__dataCompoundStorage || null;\n this.__dataHost = this.__dataHost || null;\n this.__dataTemp = {};\n this.__dataClientsInitialized = false;\n }\n\n /**\n * Overrides `PropertyAccessors` implementation to provide a\n * more efficient implementation of initializing properties from\n * the prototype on the instance.\n *\n * @override\n * @param {Object} props Properties to initialize on the prototype\n * @return {void}\n */\n _initializeProtoProperties(props) {\n this.__data = Object.create(props);\n this.__dataPending = Object.create(props);\n this.__dataOld = {};\n }\n\n /**\n * Overrides `PropertyAccessors` implementation to avoid setting\n * `_setProperty`'s `shouldNotify: true`.\n *\n * @override\n * @param {Object} props Properties to initialize on the instance\n * @return {void}\n */\n _initializeInstanceProperties(props) {\n let readOnly = this[TYPES.READ_ONLY];\n for (let prop in props) {\n if (!readOnly || !readOnly[prop]) {\n this.__dataPending = this.__dataPending || {};\n this.__dataOld = this.__dataOld || {};\n this.__data[prop] = this.__dataPending[prop] = props[prop];\n }\n }\n }\n\n // Prototype setup ----------------------------------------\n\n /**\n * Equivalent to static `addPropertyEffect` API but can be called on\n * an instance to add effects at runtime. See that method for\n * full API docs.\n *\n * @param {string} property Property that should trigger the effect\n * @param {string} type Effect type, from this.PROPERTY_EFFECT_TYPES\n * @param {Object=} effect Effect metadata object\n * @return {void}\n * @protected\n */\n _addPropertyEffect(property, type, effect) {\n this._createPropertyAccessor(property, type == TYPES.READ_ONLY);\n // effects are accumulated into arrays per property based on type\n let effects = ensureOwnEffectMap(this, type)[property];\n if (!effects) {\n effects = this[type][property] = [];\n }\n effects.push(effect);\n }\n\n /**\n * Removes the given property effect.\n *\n * @param {string} property Property the effect was associated with\n * @param {string} type Effect type, from this.PROPERTY_EFFECT_TYPES\n * @param {Object=} effect Effect metadata object to remove\n * @return {void}\n */\n _removePropertyEffect(property, type, effect) {\n let effects = ensureOwnEffectMap(this, type)[property];\n let idx = effects.indexOf(effect);\n if (idx >= 0) {\n effects.splice(idx, 1);\n }\n }\n\n /**\n * Returns whether the current prototype/instance has a property effect\n * of a certain type.\n *\n * @param {string} property Property name\n * @param {string=} type Effect type, from this.PROPERTY_EFFECT_TYPES\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasPropertyEffect(property, type) {\n let effects = this[type];\n return Boolean(effects && effects[property]);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"read only\"\n * accessor for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasReadOnlyEffect(property) {\n return this._hasPropertyEffect(property, TYPES.READ_ONLY);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"notify\"\n * property effect for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasNotifyEffect(property) {\n return this._hasPropertyEffect(property, TYPES.NOTIFY);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"reflect to attribute\"\n * property effect for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasReflectEffect(property) {\n return this._hasPropertyEffect(property, TYPES.REFLECT);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"computed\"\n * property effect for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasComputedEffect(property) {\n return this._hasPropertyEffect(property, TYPES.COMPUTE);\n }\n\n // Runtime ----------------------------------------\n\n /**\n * Sets a pending property or path. If the root property of the path in\n * question had no accessor, the path is set, otherwise it is enqueued\n * via `_setPendingProperty`.\n *\n * This function isolates relatively expensive functionality necessary\n * for the public API (`set`, `setProperties`, `notifyPath`, and property\n * change listeners via {{...}} bindings), such that it is only done\n * when paths enter the system, and not at every propagation step. It\n * also sets a `__dataHasPaths` flag on the instance which is used to\n * fast-path slower path-matching code in the property effects host paths.\n *\n * `path` can be a path string or array of path parts as accepted by the\n * public API.\n *\n * @param {string | !Array} path Path to set\n * @param {*} value Value to set\n * @param {boolean=} shouldNotify Set to true if this change should\n * cause a property notification event dispatch\n * @param {boolean=} isPathNotification If the path being set is a path\n * notification of an already changed value, as opposed to a request\n * to set and notify the change. In the latter `false` case, a dirty\n * check is performed and then the value is set to the path before\n * enqueuing the pending property change.\n * @return {boolean} Returns true if the property/path was enqueued in\n * the pending changes bag.\n * @protected\n */\n _setPendingPropertyOrPath(path, value, shouldNotify, isPathNotification) {\n if (isPathNotification ||\n root(Array.isArray(path) ? path[0] : path) !== path) {\n // Dirty check changes being set to a path against the actual object,\n // since this is the entry point for paths into the system; from here\n // the only dirty checks are against the `__dataTemp` cache to prevent\n // duplicate work in the same turn only. Note, if this was a notification\n // of a change already set to a path (isPathNotification: true),\n // we always let the change through and skip the `set` since it was\n // already dirty checked at the point of entry and the underlying\n // object has already been updated\n if (!isPathNotification) {\n let old = get(this, path);\n path = /** @type {string} */ (set(this, path, value));\n // Use property-accessor's simpler dirty check\n if (!path || !super._shouldPropertyChange(path, value, old)) {\n return false;\n }\n }\n this.__dataHasPaths = true;\n if (this._setPendingProperty(/**@type{string}*/(path), value, shouldNotify)) {\n computeLinkedPaths(this, path, value);\n return true;\n }\n } else {\n if (this.__dataHasAccessor && this.__dataHasAccessor[path]) {\n return this._setPendingProperty(/**@type{string}*/(path), value, shouldNotify);\n } else {\n this[path] = value;\n }\n }\n return false;\n }\n\n /**\n * Applies a value to a non-Polymer element/node's property.\n *\n * The implementation makes a best-effort at binding interop:\n * Some native element properties have side-effects when\n * re-setting the same value (e.g. setting `.value` resets the\n * cursor position), so we do a dirty-check before setting the value.\n * However, for better interop with non-Polymer custom elements that\n * accept objects, we explicitly re-set object changes coming from the\n * Polymer world (which may include deep object changes without the\n * top reference changing), erring on the side of providing more\n * information.\n *\n * Users may override this method to provide alternate approaches.\n *\n * @param {!Node} node The node to set a property on\n * @param {string} prop The property to set\n * @param {*} value The value to set\n * @return {void}\n * @protected\n */\n _setUnmanagedPropertyToNode(node, prop, value) {\n // It is a judgment call that resetting primitives is\n // \"bad\" and resettings objects is also \"good\"; alternatively we could\n // implement a whitelist of tag & property values that should never\n // be reset (e.g. .value &&
Header
\nHeader
\n\n \n Lorem ipsum...\n \n
\n \n Sub-header
\nHeader
\nHeader
\nDialog body
\n \n // \n // \n // \n // \n // \n // \n //
\n // TODO(valdrin) support ShadowDOM v1 when upgrading to Polymer v2.0.\n var children;\n if (element.localName === \"content\" || element.localName === \"slot\") {\n children = dom(element).getDistributedNodes();\n } else {\n // /////////////////////////\n // Use shadow root if possible, will check for distributed nodes.\n // THIS IS THE CHANGED LINE\n children = dom(element.shadowRoot || element.root || element).children;\n // /////////////////////////\n }\n for (var i = 0; i < children.length; i++) {\n // Ensure method is always invoked to collect tabbable children.\n needsSort = this._collectTabbableNodes(children[i], result) || needsSort;\n }\n return needsSort;\n },\n};\n","import \"@polymer/paper-dialog/paper-dialog\";\nimport { mixinBehaviors } from \"@polymer/polymer/lib/legacy/class\";\nimport { HaIronFocusablesHelper } from \"./ha-iron-focusables-helper.js\";\n// tslint:disable-next-line\nimport { PaperDialogElement } from \"@polymer/paper-dialog/paper-dialog\";\n\nconst paperDialogClass = customElements.get(\"paper-dialog\");\n\n// behavior that will override existing iron-overlay-behavior and call the fixed implementation\nconst haTabFixBehaviorImpl = {\n get _focusableNodes() {\n return HaIronFocusablesHelper.getTabbableNodes(this);\n },\n};\n\n// paper-dialog that uses the haTabFixBehaviorImpl behvaior\n// export class HaPaperDialog extends paperDialogClass {}\n// @ts-ignore\nexport class HaPaperDialog\n extends mixinBehaviors([haTabFixBehaviorImpl], paperDialogClass)\n implements PaperDialogElement {}\n\ndeclare global {\n interface HTMLElementTagNameMap {\n \"ha-paper-dialog\": HaPaperDialog;\n }\n}\ncustomElements.define(\"ha-paper-dialog\", HaPaperDialog);\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/supervisor/api/panel/chunk.381907f8b6a21cec010f.js b/supervisor/api/panel/chunk.381907f8b6a21cec010f.js
new file mode 100644
index 000000000..4b4429325
--- /dev/null
+++ b/supervisor/api/panel/chunk.381907f8b6a21cec010f.js
@@ -0,0 +1,2 @@
+(self.webpackJsonp=self.webpackJsonp||[]).push([[11],{182:function(H,V,C){"use strict";C.r(V);var L=document.createElement("template");L.setAttribute("style","display: none;"),L.innerHTML='\n \n
\n'],['\n \n\n \x3c!-- the mirror sizes the input/textarea so it grows with typing --\x3e\n \x3c!-- use instead of to allow this element to be used in XHTML --\x3e\n \n\n \x3c!-- size the input/textarea with a div, because the textarea has intrinsic size in ff --\x3e\n \n \n
\n']);return u=function(){return t},t}Object(s.a)({_template:Object(o.a)(u()),is:"iron-autogrow-textarea",behaviors:[r.a,n.a],properties:{value:{observer:"_valueChanged",type:String,notify:!0},bindValue:{observer:"_bindValueChanged",type:String,notify:!0},rows:{type:Number,value:1,observer:"_updateCached"},maxRows:{type:Number,value:0,observer:"_updateCached"},autocomplete:{type:String,value:"off"},autofocus:{type:Boolean,value:!1},inputmode:{type:String},placeholder:{type:String},readonly:{type:String},required:{type:Boolean},minlength:{type:Number},maxlength:{type:Number},label:{type:String}},listeners:{input:"_onInput"},get textarea(){return this.$.textarea},get selectionStart(){return this.$.textarea.selectionStart},get selectionEnd(){return this.$.textarea.selectionEnd},set selectionStart(t){this.$.textarea.selectionStart=t},set selectionEnd(t){this.$.textarea.selectionEnd=t},attached:function(){navigator.userAgent.match(/iP(?:[oa]d|hone)/)&&(this.$.textarea.style.marginLeft="-3px")},validate:function(){var t=this.$.textarea.validity.valid;return t&&(this.required&&""===this.value?t=!1:this.hasValidator()&&(t=r.a.validate.call(this,this.value))),this.invalid=!t,this.fire("iron-input-validate"),t},_bindValueChanged:function(t){this.value=t},_valueChanged:function(t){var e=this.textarea;e&&(e.value!==t&&(e.value=t||0===t?t:""),this.bindValue=t,this.$.mirror.innerHTML=this._valueForMirror(),this.fire("bind-value-changed",{value:this.bindValue}))},_onInput:function(t){var e=Object(a.a)(t).path;this.value=e?e[0].value:t.target.value},_constrain:function(t){var e;for(t=t||[""],e=this.maxRows>0&&t.length>this.maxRows?t.slice(0,this.maxRows):t.slice(0);this.rows>0&&e.length\n
\n']);return a=function(){return t},t}Object(n.a)({_template:Object(s.a)(a()),is:"paper-tooltip",hostAttributes:{role:"tooltip",tabindex:-1},properties:{for:{type:String,observer:"_findTarget"},manualMode:{type:Boolean,value:!1,observer:"_manualModeChanged"},position:{type:String,value:"bottom"},fitToVisibleBounds:{type:Boolean,value:!1},offset:{type:Number,value:14},marginTop:{type:Number,value:14},animationDelay:{type:Number,value:500,observer:"_delayChange"},animationEntry:{type:String,value:""},animationExit:{type:String,value:""},animationConfig:{type:Object,value:function(){return{entry:[{name:"fade-in-animation",node:this,timing:{delay:0}}],exit:[{name:"fade-out-animation",node:this}]}}},_showing:{type:Boolean,value:!1}},listeners:{webkitAnimationEnd:"_onAnimationEnd"},get target(){var t=Object(r.a)(this).parentNode,e=Object(r.a)(this).getOwnerRoot();return this.for?Object(r.a)(e).querySelector("#"+this.for):t.nodeType==Node.DOCUMENT_FRAGMENT_NODE?e.host:t},attached:function(){this._findTarget()},detached:function(){this.manualMode||this._removeListeners()},playAnimation:function(t){"entry"===t?this.show():"exit"===t&&this.hide()},cancelAnimation:function(){this.$.tooltip.classList.add("cancel-animation")},show:function(){if(!this._showing){if(""===Object(r.a)(this).textContent.trim()){for(var t=!0,e=Object(r.a)(this).getEffectiveChildNodes(),i=0;i\n \n \x3c!-- support hybrid mode: user might be using paper-input 1.x which distributes via --\x3e\n \n
\n \n \n
\n`,\n\n is: 'iron-autogrow-textarea',\n behaviors: [IronValidatableBehavior, IronControlState],\n\n properties: {\n /**\n * Use this property instead of `bind-value` for two-way data binding.\n * @type {string|number}\n */\n value: {observer: '_valueChanged', type: String, notify: true},\n\n /**\n * This property is deprecated, and just mirrors `value`. Use `value`\n * instead.\n * @type {string|number}\n */\n bindValue: {observer: '_bindValueChanged', type: String, notify: true},\n\n /**\n * The initial number of rows.\n *\n * @attribute rows\n * @type number\n * @default 1\n */\n rows: {type: Number, value: 1, observer: '_updateCached'},\n\n /**\n * The maximum number of rows this element can grow to until it\n * scrolls. 0 means no maximum.\n *\n * @attribute maxRows\n * @type number\n * @default 0\n */\n maxRows: {type: Number, value: 0, observer: '_updateCached'},\n\n /**\n * Bound to the textarea's `autocomplete` attribute.\n */\n autocomplete: {type: String, value: 'off'},\n\n /**\n * Bound to the textarea's `autofocus` attribute.\n */\n autofocus: {type: Boolean, value: false},\n\n /**\n * Bound to the textarea's `inputmode` attribute.\n */\n inputmode: {type: String},\n\n /**\n * Bound to the textarea's `placeholder` attribute.\n */\n placeholder: {type: String},\n\n /**\n * Bound to the textarea's `readonly` attribute.\n */\n readonly: {type: String},\n\n /**\n * Set to true to mark the textarea as required.\n */\n required: {type: Boolean},\n\n /**\n * The minimum length of the input value.\n */\n minlength: {type: Number},\n\n /**\n * The maximum length of the input value.\n */\n maxlength: {type: Number},\n\n /**\n * Bound to the textarea's `aria-label` attribute.\n */\n label: {type: String}\n\n },\n\n listeners: {'input': '_onInput'},\n\n /**\n * Returns the underlying textarea.\n * @return {!HTMLTextAreaElement}\n */\n get textarea() {\n return this.$.textarea;\n },\n\n /**\n * Returns textarea's selection start.\n * @return {number}\n */\n get selectionStart() {\n return this.$.textarea.selectionStart;\n },\n\n /**\n * Returns textarea's selection end.\n * @return {number}\n */\n get selectionEnd() {\n return this.$.textarea.selectionEnd;\n },\n\n /**\n * Sets the textarea's selection start.\n */\n set selectionStart(value) {\n this.$.textarea.selectionStart = value;\n },\n\n /**\n * Sets the textarea's selection end.\n */\n set selectionEnd(value) {\n this.$.textarea.selectionEnd = value;\n },\n\n attached: function() {\n /* iOS has an arbitrary left margin of 3px that isn't present\n * in any other browser, and means that the paper-textarea's cursor\n * overlaps the label.\n * See https://github.com/PolymerElements/paper-input/issues/468.\n */\n var IS_IOS = navigator.userAgent.match(/iP(?:[oa]d|hone)/);\n if (IS_IOS) {\n this.$.textarea.style.marginLeft = '-3px';\n }\n },\n\n /**\n * Returns true if `value` is valid. The validator provided in `validator`\n * will be used first, if it exists; otherwise, the `textarea`'s validity\n * is used.\n * @return {boolean} True if the value is valid.\n */\n validate: function() {\n // Use the nested input's native validity.\n var valid = this.$.textarea.validity.valid;\n\n // Only do extra checking if the browser thought this was valid.\n if (valid) {\n // Empty, required input is invalid\n if (this.required && this.value === '') {\n valid = false;\n } else if (this.hasValidator()) {\n valid = IronValidatableBehavior.validate.call(this, this.value);\n }\n }\n\n this.invalid = !valid;\n this.fire('iron-input-validate');\n return valid;\n },\n\n _bindValueChanged: function(bindValue) {\n this.value = bindValue;\n },\n\n _valueChanged: function(value) {\n var textarea = this.textarea;\n if (!textarea) {\n return;\n }\n\n // If the bindValue changed manually, then we need to also update\n // the underlying textarea's value. Otherwise this change was probably\n // generated from the _onInput handler, and the two values are already\n // the same.\n if (textarea.value !== value) {\n textarea.value = !(value || value === 0) ? '' : value;\n }\n\n this.bindValue = value;\n this.$.mirror.innerHTML = this._valueForMirror();\n\n // Manually notify because we don't want to notify until after setting\n // value.\n this.fire('bind-value-changed', {value: this.bindValue});\n },\n\n _onInput: function(event) {\n var eventPath = dom(event).path;\n this.value = eventPath ? eventPath[0].value : event.target.value;\n },\n\n _constrain: function(tokens) {\n var _tokens;\n tokens = tokens || [''];\n // Enforce the min and max heights for a multiline input to avoid\n // measurement\n if (this.maxRows > 0 && tokens.length > this.maxRows) {\n _tokens = tokens.slice(0, this.maxRows);\n } else {\n _tokens = tokens.slice(0);\n }\n while (this.rows > 0 && _tokens.length < this.rows) {\n _tokens.push('');\n }\n // Use instead of to allow this element to be used in XHTML.\n return _tokens.join('') + ' ';\n },\n\n _valueForMirror: function() {\n var input = this.textarea;\n if (!input) {\n return;\n }\n this.tokens = (input && input.value) ? input.value.replace(/&/gm, '&')\n .replace(/\"/gm, '"')\n .replace(/'/gm, ''')\n .replace(//gm, '>')\n .split('\\n') :\n [''];\n return this._constrain(this.tokens);\n },\n\n _updateCached: function() {\n this.$.mirror.innerHTML = this._constrain(this.tokens);\n }\n});\n","'use strict';\n\n\nvar yaml = require('./lib/js-yaml.js');\n\n\nmodule.exports = yaml;\n","'use strict';\n\n\nvar loader = require('./js-yaml/loader');\nvar dumper = require('./js-yaml/dumper');\n\n\nfunction deprecated(name) {\n return function () {\n throw new Error('Function ' + name + ' is deprecated and cannot be used.');\n };\n}\n\n\nmodule.exports.Type = require('./js-yaml/type');\nmodule.exports.Schema = require('./js-yaml/schema');\nmodule.exports.FAILSAFE_SCHEMA = require('./js-yaml/schema/failsafe');\nmodule.exports.JSON_SCHEMA = require('./js-yaml/schema/json');\nmodule.exports.CORE_SCHEMA = require('./js-yaml/schema/core');\nmodule.exports.DEFAULT_SAFE_SCHEMA = require('./js-yaml/schema/default_safe');\nmodule.exports.DEFAULT_FULL_SCHEMA = require('./js-yaml/schema/default_full');\nmodule.exports.load = loader.load;\nmodule.exports.loadAll = loader.loadAll;\nmodule.exports.safeLoad = loader.safeLoad;\nmodule.exports.safeLoadAll = loader.safeLoadAll;\nmodule.exports.dump = dumper.dump;\nmodule.exports.safeDump = dumper.safeDump;\nmodule.exports.YAMLException = require('./js-yaml/exception');\n\n// Deprecated schema names from JS-YAML 2.0.x\nmodule.exports.MINIMAL_SCHEMA = require('./js-yaml/schema/failsafe');\nmodule.exports.SAFE_SCHEMA = require('./js-yaml/schema/default_safe');\nmodule.exports.DEFAULT_SCHEMA = require('./js-yaml/schema/default_full');\n\n// Deprecated functions from JS-YAML 1.x.x\nmodule.exports.scan = deprecated('scan');\nmodule.exports.parse = deprecated('parse');\nmodule.exports.compose = deprecated('compose');\nmodule.exports.addConstructor = deprecated('addConstructor');\n","'use strict';\n\n/*eslint-disable max-len,no-use-before-define*/\n\nvar common = require('./common');\nvar YAMLException = require('./exception');\nvar Mark = require('./mark');\nvar DEFAULT_SAFE_SCHEMA = require('./schema/default_safe');\nvar DEFAULT_FULL_SCHEMA = require('./schema/default_full');\n\n\nvar _hasOwnProperty = Object.prototype.hasOwnProperty;\n\n\nvar CONTEXT_FLOW_IN = 1;\nvar CONTEXT_FLOW_OUT = 2;\nvar CONTEXT_BLOCK_IN = 3;\nvar CONTEXT_BLOCK_OUT = 4;\n\n\nvar CHOMPING_CLIP = 1;\nvar CHOMPING_STRIP = 2;\nvar CHOMPING_KEEP = 3;\n\n\nvar PATTERN_NON_PRINTABLE = /[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F\\x7F-\\x84\\x86-\\x9F\\uFFFE\\uFFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF]/;\nvar PATTERN_NON_ASCII_LINE_BREAKS = /[\\x85\\u2028\\u2029]/;\nvar PATTERN_FLOW_INDICATORS = /[,\\[\\]\\{\\}]/;\nvar PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\\-]+!)$/i;\nvar PATTERN_TAG_URI = /^(?:!|[^,\\[\\]\\{\\}])(?:%[0-9a-f]{2}|[0-9a-z\\-#;\\/\\?:@&=\\+\\$,_\\.!~\\*'\\(\\)\\[\\]])*$/i;\n\n\nfunction _class(obj) { return Object.prototype.toString.call(obj); }\n\nfunction is_EOL(c) {\n return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);\n}\n\nfunction is_WHITE_SPACE(c) {\n return (c === 0x09/* Tab */) || (c === 0x20/* Space */);\n}\n\nfunction is_WS_OR_EOL(c) {\n return (c === 0x09/* Tab */) ||\n (c === 0x20/* Space */) ||\n (c === 0x0A/* LF */) ||\n (c === 0x0D/* CR */);\n}\n\nfunction is_FLOW_INDICATOR(c) {\n return c === 0x2C/* , */ ||\n c === 0x5B/* [ */ ||\n c === 0x5D/* ] */ ||\n c === 0x7B/* { */ ||\n c === 0x7D/* } */;\n}\n\nfunction fromHexCode(c) {\n var lc;\n\n if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {\n return c - 0x30;\n }\n\n /*eslint-disable no-bitwise*/\n lc = c | 0x20;\n\n if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {\n return lc - 0x61 + 10;\n }\n\n return -1;\n}\n\nfunction escapedHexLen(c) {\n if (c === 0x78/* x */) { return 2; }\n if (c === 0x75/* u */) { return 4; }\n if (c === 0x55/* U */) { return 8; }\n return 0;\n}\n\nfunction fromDecimalCode(c) {\n if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {\n return c - 0x30;\n }\n\n return -1;\n}\n\nfunction simpleEscapeSequence(c) {\n /* eslint-disable indent */\n return (c === 0x30/* 0 */) ? '\\x00' :\n (c === 0x61/* a */) ? '\\x07' :\n (c === 0x62/* b */) ? '\\x08' :\n (c === 0x74/* t */) ? '\\x09' :\n (c === 0x09/* Tab */) ? '\\x09' :\n (c === 0x6E/* n */) ? '\\x0A' :\n (c === 0x76/* v */) ? '\\x0B' :\n (c === 0x66/* f */) ? '\\x0C' :\n (c === 0x72/* r */) ? '\\x0D' :\n (c === 0x65/* e */) ? '\\x1B' :\n (c === 0x20/* Space */) ? ' ' :\n (c === 0x22/* \" */) ? '\\x22' :\n (c === 0x2F/* / */) ? '/' :\n (c === 0x5C/* \\ */) ? '\\x5C' :\n (c === 0x4E/* N */) ? '\\x85' :\n (c === 0x5F/* _ */) ? '\\xA0' :\n (c === 0x4C/* L */) ? '\\u2028' :\n (c === 0x50/* P */) ? '\\u2029' : '';\n}\n\nfunction charFromCodepoint(c) {\n if (c <= 0xFFFF) {\n return String.fromCharCode(c);\n }\n // Encode UTF-16 surrogate pair\n // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF\n return String.fromCharCode(\n ((c - 0x010000) >> 10) + 0xD800,\n ((c - 0x010000) & 0x03FF) + 0xDC00\n );\n}\n\nvar simpleEscapeCheck = new Array(256); // integer, for fast access\nvar simpleEscapeMap = new Array(256);\nfor (var i = 0; i < 256; i++) {\n simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;\n simpleEscapeMap[i] = simpleEscapeSequence(i);\n}\n\n\nfunction State(input, options) {\n this.input = input;\n\n this.filename = options['filename'] || null;\n this.schema = options['schema'] || DEFAULT_FULL_SCHEMA;\n this.onWarning = options['onWarning'] || null;\n this.legacy = options['legacy'] || false;\n this.json = options['json'] || false;\n this.listener = options['listener'] || null;\n\n this.implicitTypes = this.schema.compiledImplicit;\n this.typeMap = this.schema.compiledTypeMap;\n\n this.length = input.length;\n this.position = 0;\n this.line = 0;\n this.lineStart = 0;\n this.lineIndent = 0;\n\n this.documents = [];\n\n /*\n this.version;\n this.checkLineBreaks;\n this.tagMap;\n this.anchorMap;\n this.tag;\n this.anchor;\n this.kind;\n this.result;*/\n\n}\n\n\nfunction generateError(state, message) {\n return new YAMLException(\n message,\n new Mark(state.filename, state.input, state.position, state.line, (state.position - state.lineStart)));\n}\n\nfunction throwError(state, message) {\n throw generateError(state, message);\n}\n\nfunction throwWarning(state, message) {\n if (state.onWarning) {\n state.onWarning.call(null, generateError(state, message));\n }\n}\n\n\nvar directiveHandlers = {\n\n YAML: function handleYamlDirective(state, name, args) {\n\n var match, major, minor;\n\n if (state.version !== null) {\n throwError(state, 'duplication of %YAML directive');\n }\n\n if (args.length !== 1) {\n throwError(state, 'YAML directive accepts exactly one argument');\n }\n\n match = /^([0-9]+)\\.([0-9]+)$/.exec(args[0]);\n\n if (match === null) {\n throwError(state, 'ill-formed argument of the YAML directive');\n }\n\n major = parseInt(match[1], 10);\n minor = parseInt(match[2], 10);\n\n if (major !== 1) {\n throwError(state, 'unacceptable YAML version of the document');\n }\n\n state.version = args[0];\n state.checkLineBreaks = (minor < 2);\n\n if (minor !== 1 && minor !== 2) {\n throwWarning(state, 'unsupported YAML version of the document');\n }\n },\n\n TAG: function handleTagDirective(state, name, args) {\n\n var handle, prefix;\n\n if (args.length !== 2) {\n throwError(state, 'TAG directive accepts exactly two arguments');\n }\n\n handle = args[0];\n prefix = args[1];\n\n if (!PATTERN_TAG_HANDLE.test(handle)) {\n throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');\n }\n\n if (_hasOwnProperty.call(state.tagMap, handle)) {\n throwError(state, 'there is a previously declared suffix for \"' + handle + '\" tag handle');\n }\n\n if (!PATTERN_TAG_URI.test(prefix)) {\n throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');\n }\n\n state.tagMap[handle] = prefix;\n }\n};\n\n\nfunction captureSegment(state, start, end, checkJson) {\n var _position, _length, _character, _result;\n\n if (start < end) {\n _result = state.input.slice(start, end);\n\n if (checkJson) {\n for (_position = 0, _length = _result.length; _position < _length; _position += 1) {\n _character = _result.charCodeAt(_position);\n if (!(_character === 0x09 ||\n (0x20 <= _character && _character <= 0x10FFFF))) {\n throwError(state, 'expected valid JSON character');\n }\n }\n } else if (PATTERN_NON_PRINTABLE.test(_result)) {\n throwError(state, 'the stream contains non-printable characters');\n }\n\n state.result += _result;\n }\n}\n\nfunction mergeMappings(state, destination, source, overridableKeys) {\n var sourceKeys, key, index, quantity;\n\n if (!common.isObject(source)) {\n throwError(state, 'cannot merge mappings; the provided source object is unacceptable');\n }\n\n sourceKeys = Object.keys(source);\n\n for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {\n key = sourceKeys[index];\n\n if (!_hasOwnProperty.call(destination, key)) {\n destination[key] = source[key];\n overridableKeys[key] = true;\n }\n }\n}\n\nfunction storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, startLine, startPos) {\n var index, quantity;\n\n // The output is a plain object here, so keys can only be strings.\n // We need to convert keyNode to a string, but doing so can hang the process\n // (deeply nested arrays that explode exponentially using aliases).\n if (Array.isArray(keyNode)) {\n keyNode = Array.prototype.slice.call(keyNode);\n\n for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {\n if (Array.isArray(keyNode[index])) {\n throwError(state, 'nested arrays are not supported inside keys');\n }\n\n if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {\n keyNode[index] = '[object Object]';\n }\n }\n }\n\n // Avoid code execution in load() via toString property\n // (still use its own toString for arrays, timestamps,\n // and whatever user schema extensions happen to have @@toStringTag)\n if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {\n keyNode = '[object Object]';\n }\n\n\n keyNode = String(keyNode);\n\n if (_result === null) {\n _result = {};\n }\n\n if (keyTag === 'tag:yaml.org,2002:merge') {\n if (Array.isArray(valueNode)) {\n for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {\n mergeMappings(state, _result, valueNode[index], overridableKeys);\n }\n } else {\n mergeMappings(state, _result, valueNode, overridableKeys);\n }\n } else {\n if (!state.json &&\n !_hasOwnProperty.call(overridableKeys, keyNode) &&\n _hasOwnProperty.call(_result, keyNode)) {\n state.line = startLine || state.line;\n state.position = startPos || state.position;\n throwError(state, 'duplicated mapping key');\n }\n _result[keyNode] = valueNode;\n delete overridableKeys[keyNode];\n }\n\n return _result;\n}\n\nfunction readLineBreak(state) {\n var ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x0A/* LF */) {\n state.position++;\n } else if (ch === 0x0D/* CR */) {\n state.position++;\n if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {\n state.position++;\n }\n } else {\n throwError(state, 'a line break is expected');\n }\n\n state.line += 1;\n state.lineStart = state.position;\n}\n\nfunction skipSeparationSpace(state, allowComments, checkIndent) {\n var lineBreaks = 0,\n ch = state.input.charCodeAt(state.position);\n\n while (ch !== 0) {\n while (is_WHITE_SPACE(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (allowComments && ch === 0x23/* # */) {\n do {\n ch = state.input.charCodeAt(++state.position);\n } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);\n }\n\n if (is_EOL(ch)) {\n readLineBreak(state);\n\n ch = state.input.charCodeAt(state.position);\n lineBreaks++;\n state.lineIndent = 0;\n\n while (ch === 0x20/* Space */) {\n state.lineIndent++;\n ch = state.input.charCodeAt(++state.position);\n }\n } else {\n break;\n }\n }\n\n if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {\n throwWarning(state, 'deficient indentation');\n }\n\n return lineBreaks;\n}\n\nfunction testDocumentSeparator(state) {\n var _position = state.position,\n ch;\n\n ch = state.input.charCodeAt(_position);\n\n // Condition state.position === state.lineStart is tested\n // in parent on each call, for efficiency. No needs to test here again.\n if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&\n ch === state.input.charCodeAt(_position + 1) &&\n ch === state.input.charCodeAt(_position + 2)) {\n\n _position += 3;\n\n ch = state.input.charCodeAt(_position);\n\n if (ch === 0 || is_WS_OR_EOL(ch)) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction writeFoldedLines(state, count) {\n if (count === 1) {\n state.result += ' ';\n } else if (count > 1) {\n state.result += common.repeat('\\n', count - 1);\n }\n}\n\n\nfunction readPlainScalar(state, nodeIndent, withinFlowCollection) {\n var preceding,\n following,\n captureStart,\n captureEnd,\n hasPendingContent,\n _line,\n _lineStart,\n _lineIndent,\n _kind = state.kind,\n _result = state.result,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (is_WS_OR_EOL(ch) ||\n is_FLOW_INDICATOR(ch) ||\n ch === 0x23/* # */ ||\n ch === 0x26/* & */ ||\n ch === 0x2A/* * */ ||\n ch === 0x21/* ! */ ||\n ch === 0x7C/* | */ ||\n ch === 0x3E/* > */ ||\n ch === 0x27/* ' */ ||\n ch === 0x22/* \" */ ||\n ch === 0x25/* % */ ||\n ch === 0x40/* @ */ ||\n ch === 0x60/* ` */) {\n return false;\n }\n\n if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {\n following = state.input.charCodeAt(state.position + 1);\n\n if (is_WS_OR_EOL(following) ||\n withinFlowCollection && is_FLOW_INDICATOR(following)) {\n return false;\n }\n }\n\n state.kind = 'scalar';\n state.result = '';\n captureStart = captureEnd = state.position;\n hasPendingContent = false;\n\n while (ch !== 0) {\n if (ch === 0x3A/* : */) {\n following = state.input.charCodeAt(state.position + 1);\n\n if (is_WS_OR_EOL(following) ||\n withinFlowCollection && is_FLOW_INDICATOR(following)) {\n break;\n }\n\n } else if (ch === 0x23/* # */) {\n preceding = state.input.charCodeAt(state.position - 1);\n\n if (is_WS_OR_EOL(preceding)) {\n break;\n }\n\n } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||\n withinFlowCollection && is_FLOW_INDICATOR(ch)) {\n break;\n\n } else if (is_EOL(ch)) {\n _line = state.line;\n _lineStart = state.lineStart;\n _lineIndent = state.lineIndent;\n skipSeparationSpace(state, false, -1);\n\n if (state.lineIndent >= nodeIndent) {\n hasPendingContent = true;\n ch = state.input.charCodeAt(state.position);\n continue;\n } else {\n state.position = captureEnd;\n state.line = _line;\n state.lineStart = _lineStart;\n state.lineIndent = _lineIndent;\n break;\n }\n }\n\n if (hasPendingContent) {\n captureSegment(state, captureStart, captureEnd, false);\n writeFoldedLines(state, state.line - _line);\n captureStart = captureEnd = state.position;\n hasPendingContent = false;\n }\n\n if (!is_WHITE_SPACE(ch)) {\n captureEnd = state.position + 1;\n }\n\n ch = state.input.charCodeAt(++state.position);\n }\n\n captureSegment(state, captureStart, captureEnd, false);\n\n if (state.result) {\n return true;\n }\n\n state.kind = _kind;\n state.result = _result;\n return false;\n}\n\nfunction readSingleQuotedScalar(state, nodeIndent) {\n var ch,\n captureStart, captureEnd;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x27/* ' */) {\n return false;\n }\n\n state.kind = 'scalar';\n state.result = '';\n state.position++;\n captureStart = captureEnd = state.position;\n\n while ((ch = state.input.charCodeAt(state.position)) !== 0) {\n if (ch === 0x27/* ' */) {\n captureSegment(state, captureStart, state.position, true);\n ch = state.input.charCodeAt(++state.position);\n\n if (ch === 0x27/* ' */) {\n captureStart = state.position;\n state.position++;\n captureEnd = state.position;\n } else {\n return true;\n }\n\n } else if (is_EOL(ch)) {\n captureSegment(state, captureStart, captureEnd, true);\n writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));\n captureStart = captureEnd = state.position;\n\n } else if (state.position === state.lineStart && testDocumentSeparator(state)) {\n throwError(state, 'unexpected end of the document within a single quoted scalar');\n\n } else {\n state.position++;\n captureEnd = state.position;\n }\n }\n\n throwError(state, 'unexpected end of the stream within a single quoted scalar');\n}\n\nfunction readDoubleQuotedScalar(state, nodeIndent) {\n var captureStart,\n captureEnd,\n hexLength,\n hexResult,\n tmp,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x22/* \" */) {\n return false;\n }\n\n state.kind = 'scalar';\n state.result = '';\n state.position++;\n captureStart = captureEnd = state.position;\n\n while ((ch = state.input.charCodeAt(state.position)) !== 0) {\n if (ch === 0x22/* \" */) {\n captureSegment(state, captureStart, state.position, true);\n state.position++;\n return true;\n\n } else if (ch === 0x5C/* \\ */) {\n captureSegment(state, captureStart, state.position, true);\n ch = state.input.charCodeAt(++state.position);\n\n if (is_EOL(ch)) {\n skipSeparationSpace(state, false, nodeIndent);\n\n // TODO: rework to inline fn with no type cast?\n } else if (ch < 256 && simpleEscapeCheck[ch]) {\n state.result += simpleEscapeMap[ch];\n state.position++;\n\n } else if ((tmp = escapedHexLen(ch)) > 0) {\n hexLength = tmp;\n hexResult = 0;\n\n for (; hexLength > 0; hexLength--) {\n ch = state.input.charCodeAt(++state.position);\n\n if ((tmp = fromHexCode(ch)) >= 0) {\n hexResult = (hexResult << 4) + tmp;\n\n } else {\n throwError(state, 'expected hexadecimal character');\n }\n }\n\n state.result += charFromCodepoint(hexResult);\n\n state.position++;\n\n } else {\n throwError(state, 'unknown escape sequence');\n }\n\n captureStart = captureEnd = state.position;\n\n } else if (is_EOL(ch)) {\n captureSegment(state, captureStart, captureEnd, true);\n writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));\n captureStart = captureEnd = state.position;\n\n } else if (state.position === state.lineStart && testDocumentSeparator(state)) {\n throwError(state, 'unexpected end of the document within a double quoted scalar');\n\n } else {\n state.position++;\n captureEnd = state.position;\n }\n }\n\n throwError(state, 'unexpected end of the stream within a double quoted scalar');\n}\n\nfunction readFlowCollection(state, nodeIndent) {\n var readNext = true,\n _line,\n _tag = state.tag,\n _result,\n _anchor = state.anchor,\n following,\n terminator,\n isPair,\n isExplicitPair,\n isMapping,\n overridableKeys = {},\n keyNode,\n keyTag,\n valueNode,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x5B/* [ */) {\n terminator = 0x5D;/* ] */\n isMapping = false;\n _result = [];\n } else if (ch === 0x7B/* { */) {\n terminator = 0x7D;/* } */\n isMapping = true;\n _result = {};\n } else {\n return false;\n }\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = _result;\n }\n\n ch = state.input.charCodeAt(++state.position);\n\n while (ch !== 0) {\n skipSeparationSpace(state, true, nodeIndent);\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === terminator) {\n state.position++;\n state.tag = _tag;\n state.anchor = _anchor;\n state.kind = isMapping ? 'mapping' : 'sequence';\n state.result = _result;\n return true;\n } else if (!readNext) {\n throwError(state, 'missed comma between flow collection entries');\n }\n\n keyTag = keyNode = valueNode = null;\n isPair = isExplicitPair = false;\n\n if (ch === 0x3F/* ? */) {\n following = state.input.charCodeAt(state.position + 1);\n\n if (is_WS_OR_EOL(following)) {\n isPair = isExplicitPair = true;\n state.position++;\n skipSeparationSpace(state, true, nodeIndent);\n }\n }\n\n _line = state.line;\n composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);\n keyTag = state.tag;\n keyNode = state.result;\n skipSeparationSpace(state, true, nodeIndent);\n\n ch = state.input.charCodeAt(state.position);\n\n if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {\n isPair = true;\n ch = state.input.charCodeAt(++state.position);\n skipSeparationSpace(state, true, nodeIndent);\n composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);\n valueNode = state.result;\n }\n\n if (isMapping) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode);\n } else if (isPair) {\n _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode));\n } else {\n _result.push(keyNode);\n }\n\n skipSeparationSpace(state, true, nodeIndent);\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x2C/* , */) {\n readNext = true;\n ch = state.input.charCodeAt(++state.position);\n } else {\n readNext = false;\n }\n }\n\n throwError(state, 'unexpected end of the stream within a flow collection');\n}\n\nfunction readBlockScalar(state, nodeIndent) {\n var captureStart,\n folding,\n chomping = CHOMPING_CLIP,\n didReadContent = false,\n detectedIndent = false,\n textIndent = nodeIndent,\n emptyLines = 0,\n atMoreIndented = false,\n tmp,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch === 0x7C/* | */) {\n folding = false;\n } else if (ch === 0x3E/* > */) {\n folding = true;\n } else {\n return false;\n }\n\n state.kind = 'scalar';\n state.result = '';\n\n while (ch !== 0) {\n ch = state.input.charCodeAt(++state.position);\n\n if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {\n if (CHOMPING_CLIP === chomping) {\n chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;\n } else {\n throwError(state, 'repeat of a chomping mode identifier');\n }\n\n } else if ((tmp = fromDecimalCode(ch)) >= 0) {\n if (tmp === 0) {\n throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');\n } else if (!detectedIndent) {\n textIndent = nodeIndent + tmp - 1;\n detectedIndent = true;\n } else {\n throwError(state, 'repeat of an indentation width identifier');\n }\n\n } else {\n break;\n }\n }\n\n if (is_WHITE_SPACE(ch)) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (is_WHITE_SPACE(ch));\n\n if (ch === 0x23/* # */) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (!is_EOL(ch) && (ch !== 0));\n }\n }\n\n while (ch !== 0) {\n readLineBreak(state);\n state.lineIndent = 0;\n\n ch = state.input.charCodeAt(state.position);\n\n while ((!detectedIndent || state.lineIndent < textIndent) &&\n (ch === 0x20/* Space */)) {\n state.lineIndent++;\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (!detectedIndent && state.lineIndent > textIndent) {\n textIndent = state.lineIndent;\n }\n\n if (is_EOL(ch)) {\n emptyLines++;\n continue;\n }\n\n // End of the scalar.\n if (state.lineIndent < textIndent) {\n\n // Perform the chomping.\n if (chomping === CHOMPING_KEEP) {\n state.result += common.repeat('\\n', didReadContent ? 1 + emptyLines : emptyLines);\n } else if (chomping === CHOMPING_CLIP) {\n if (didReadContent) { // i.e. only if the scalar is not empty.\n state.result += '\\n';\n }\n }\n\n // Break this `while` cycle and go to the funciton's epilogue.\n break;\n }\n\n // Folded style: use fancy rules to handle line breaks.\n if (folding) {\n\n // Lines starting with white space characters (more-indented lines) are not folded.\n if (is_WHITE_SPACE(ch)) {\n atMoreIndented = true;\n // except for the first content line (cf. Example 8.1)\n state.result += common.repeat('\\n', didReadContent ? 1 + emptyLines : emptyLines);\n\n // End of more-indented block.\n } else if (atMoreIndented) {\n atMoreIndented = false;\n state.result += common.repeat('\\n', emptyLines + 1);\n\n // Just one line break - perceive as the same line.\n } else if (emptyLines === 0) {\n if (didReadContent) { // i.e. only if we have already read some scalar content.\n state.result += ' ';\n }\n\n // Several line breaks - perceive as different lines.\n } else {\n state.result += common.repeat('\\n', emptyLines);\n }\n\n // Literal style: just add exact number of line breaks between content lines.\n } else {\n // Keep all line breaks except the header line break.\n state.result += common.repeat('\\n', didReadContent ? 1 + emptyLines : emptyLines);\n }\n\n didReadContent = true;\n detectedIndent = true;\n emptyLines = 0;\n captureStart = state.position;\n\n while (!is_EOL(ch) && (ch !== 0)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n captureSegment(state, captureStart, state.position, false);\n }\n\n return true;\n}\n\nfunction readBlockSequence(state, nodeIndent) {\n var _line,\n _tag = state.tag,\n _anchor = state.anchor,\n _result = [],\n following,\n detected = false,\n ch;\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = _result;\n }\n\n ch = state.input.charCodeAt(state.position);\n\n while (ch !== 0) {\n\n if (ch !== 0x2D/* - */) {\n break;\n }\n\n following = state.input.charCodeAt(state.position + 1);\n\n if (!is_WS_OR_EOL(following)) {\n break;\n }\n\n detected = true;\n state.position++;\n\n if (skipSeparationSpace(state, true, -1)) {\n if (state.lineIndent <= nodeIndent) {\n _result.push(null);\n ch = state.input.charCodeAt(state.position);\n continue;\n }\n }\n\n _line = state.line;\n composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);\n _result.push(state.result);\n skipSeparationSpace(state, true, -1);\n\n ch = state.input.charCodeAt(state.position);\n\n if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {\n throwError(state, 'bad indentation of a sequence entry');\n } else if (state.lineIndent < nodeIndent) {\n break;\n }\n }\n\n if (detected) {\n state.tag = _tag;\n state.anchor = _anchor;\n state.kind = 'sequence';\n state.result = _result;\n return true;\n }\n return false;\n}\n\nfunction readBlockMapping(state, nodeIndent, flowIndent) {\n var following,\n allowCompact,\n _line,\n _pos,\n _tag = state.tag,\n _anchor = state.anchor,\n _result = {},\n overridableKeys = {},\n keyTag = null,\n keyNode = null,\n valueNode = null,\n atExplicitKey = false,\n detected = false,\n ch;\n\n if (state.anchor !== null) {\n state.anchorMap[state.anchor] = _result;\n }\n\n ch = state.input.charCodeAt(state.position);\n\n while (ch !== 0) {\n following = state.input.charCodeAt(state.position + 1);\n _line = state.line; // Save the current line.\n _pos = state.position;\n\n //\n // Explicit notation case. There are two separate blocks:\n // first for the key (denoted by \"?\") and second for the value (denoted by \":\")\n //\n if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {\n\n if (ch === 0x3F/* ? */) {\n if (atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);\n keyTag = keyNode = valueNode = null;\n }\n\n detected = true;\n atExplicitKey = true;\n allowCompact = true;\n\n } else if (atExplicitKey) {\n // i.e. 0x3A/* : */ === character after the explicit key.\n atExplicitKey = false;\n allowCompact = true;\n\n } else {\n throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');\n }\n\n state.position += 1;\n ch = following;\n\n //\n // Implicit notation case. Flow-style node as the key first, then \":\", and the value.\n //\n } else if (composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {\n\n if (state.line === _line) {\n ch = state.input.charCodeAt(state.position);\n\n while (is_WHITE_SPACE(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (ch === 0x3A/* : */) {\n ch = state.input.charCodeAt(++state.position);\n\n if (!is_WS_OR_EOL(ch)) {\n throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');\n }\n\n if (atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);\n keyTag = keyNode = valueNode = null;\n }\n\n detected = true;\n atExplicitKey = false;\n allowCompact = false;\n keyTag = state.tag;\n keyNode = state.result;\n\n } else if (detected) {\n throwError(state, 'can not read an implicit mapping pair; a colon is missed');\n\n } else {\n state.tag = _tag;\n state.anchor = _anchor;\n return true; // Keep the result of `composeNode`.\n }\n\n } else if (detected) {\n throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');\n\n } else {\n state.tag = _tag;\n state.anchor = _anchor;\n return true; // Keep the result of `composeNode`.\n }\n\n } else {\n break; // Reading is done. Go to the epilogue.\n }\n\n //\n // Common reading code for both explicit and implicit notations.\n //\n if (state.line === _line || state.lineIndent > nodeIndent) {\n if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {\n if (atExplicitKey) {\n keyNode = state.result;\n } else {\n valueNode = state.result;\n }\n }\n\n if (!atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _pos);\n keyTag = keyNode = valueNode = null;\n }\n\n skipSeparationSpace(state, true, -1);\n ch = state.input.charCodeAt(state.position);\n }\n\n if (state.lineIndent > nodeIndent && (ch !== 0)) {\n throwError(state, 'bad indentation of a mapping entry');\n } else if (state.lineIndent < nodeIndent) {\n break;\n }\n }\n\n //\n // Epilogue.\n //\n\n // Special case: last mapping's node contains only the key in explicit notation.\n if (atExplicitKey) {\n storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);\n }\n\n // Expose the resulting mapping.\n if (detected) {\n state.tag = _tag;\n state.anchor = _anchor;\n state.kind = 'mapping';\n state.result = _result;\n }\n\n return detected;\n}\n\nfunction readTagProperty(state) {\n var _position,\n isVerbatim = false,\n isNamed = false,\n tagHandle,\n tagName,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x21/* ! */) return false;\n\n if (state.tag !== null) {\n throwError(state, 'duplication of a tag property');\n }\n\n ch = state.input.charCodeAt(++state.position);\n\n if (ch === 0x3C/* < */) {\n isVerbatim = true;\n ch = state.input.charCodeAt(++state.position);\n\n } else if (ch === 0x21/* ! */) {\n isNamed = true;\n tagHandle = '!!';\n ch = state.input.charCodeAt(++state.position);\n\n } else {\n tagHandle = '!';\n }\n\n _position = state.position;\n\n if (isVerbatim) {\n do { ch = state.input.charCodeAt(++state.position); }\n while (ch !== 0 && ch !== 0x3E/* > */);\n\n if (state.position < state.length) {\n tagName = state.input.slice(_position, state.position);\n ch = state.input.charCodeAt(++state.position);\n } else {\n throwError(state, 'unexpected end of the stream within a verbatim tag');\n }\n } else {\n while (ch !== 0 && !is_WS_OR_EOL(ch)) {\n\n if (ch === 0x21/* ! */) {\n if (!isNamed) {\n tagHandle = state.input.slice(_position - 1, state.position + 1);\n\n if (!PATTERN_TAG_HANDLE.test(tagHandle)) {\n throwError(state, 'named tag handle cannot contain such characters');\n }\n\n isNamed = true;\n _position = state.position + 1;\n } else {\n throwError(state, 'tag suffix cannot contain exclamation marks');\n }\n }\n\n ch = state.input.charCodeAt(++state.position);\n }\n\n tagName = state.input.slice(_position, state.position);\n\n if (PATTERN_FLOW_INDICATORS.test(tagName)) {\n throwError(state, 'tag suffix cannot contain flow indicator characters');\n }\n }\n\n if (tagName && !PATTERN_TAG_URI.test(tagName)) {\n throwError(state, 'tag name cannot contain such characters: ' + tagName);\n }\n\n if (isVerbatim) {\n state.tag = tagName;\n\n } else if (_hasOwnProperty.call(state.tagMap, tagHandle)) {\n state.tag = state.tagMap[tagHandle] + tagName;\n\n } else if (tagHandle === '!') {\n state.tag = '!' + tagName;\n\n } else if (tagHandle === '!!') {\n state.tag = 'tag:yaml.org,2002:' + tagName;\n\n } else {\n throwError(state, 'undeclared tag handle \"' + tagHandle + '\"');\n }\n\n return true;\n}\n\nfunction readAnchorProperty(state) {\n var _position,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x26/* & */) return false;\n\n if (state.anchor !== null) {\n throwError(state, 'duplication of an anchor property');\n }\n\n ch = state.input.charCodeAt(++state.position);\n _position = state.position;\n\n while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (state.position === _position) {\n throwError(state, 'name of an anchor node must contain at least one character');\n }\n\n state.anchor = state.input.slice(_position, state.position);\n return true;\n}\n\nfunction readAlias(state) {\n var _position, alias,\n ch;\n\n ch = state.input.charCodeAt(state.position);\n\n if (ch !== 0x2A/* * */) return false;\n\n ch = state.input.charCodeAt(++state.position);\n _position = state.position;\n\n while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {\n ch = state.input.charCodeAt(++state.position);\n }\n\n if (state.position === _position) {\n throwError(state, 'name of an alias node must contain at least one character');\n }\n\n alias = state.input.slice(_position, state.position);\n\n if (!state.anchorMap.hasOwnProperty(alias)) {\n throwError(state, 'unidentified alias \"' + alias + '\"');\n }\n\n state.result = state.anchorMap[alias];\n skipSeparationSpace(state, true, -1);\n return true;\n}\n\nfunction composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {\n var allowBlockStyles,\n allowBlockScalars,\n allowBlockCollections,\n indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this
\n \n \n \n
\n Show your status
\n Your status is visible to everyone
\n Employee list:
\n * First name: {{item.first}}
\n * Last name: {{item.last}}
\n * \n * Employee list:
\n * First name: {{item.first}}
\n * Last name: {{item.last}}
\n * \n * \n * Selected employees:
\n * First name: {{item.first}}
\n * Last name: {{item.last}}
\n * \n * ${this.partialTemplate}
\n * ${super.template}\n * `;\n * }\n * static get partialTemplate() { return html`Partial!`; }\n *\n * @param {!ITemplateArray} strings Constant parts of tagged template literal\n * @param {...*} values Variable parts of tagged template literal\n * @return {!HTMLTemplateElement} Constructed HTMLTemplateElement\n */\nexport const html = function html(strings, ...values) {\n const template = /** @type {!HTMLTemplateElement} */(document.createElement('template'));\n template.innerHTML = values.reduce((acc, v, idx) =>\n acc + htmlValue(v) + strings[idx + 1], strings[0]);\n return template;\n};\n\n/**\n * An html literal tag that can be used with `html` to compose.\n * a literal string.\n *\n * Example:\n *\n * static get template() {\n * return html`\n * \n * ${staticValue}
\n * ${super.template}\n * `;\n * }\n * static get styleTemplate() {\n * return htmlLiteral`.shadowed { background: gray; }`;\n * }\n *\n * @param {!ITemplateArray} strings Constant parts of tagged template literal\n * @param {...*} values Variable parts of tagged template literal\n * @return {!LiteralString} Constructed literal string\n */\nexport const htmlLiteral = function(strings, ...values) {\n return new LiteralString(values.reduce((acc, v, idx) =>\n acc + literalValue(v) + strings[idx + 1], strings[0]));\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport { Class } from './class.js';\n\nimport '../utils/boot.js';\n\n/**\n * Legacy class factory and registration helper for defining Polymer\n * elements.\n *\n * This method is equivalent to\n *\n * import {Class} from '@polymer/polymer/lib/legacy/class.js';\n * customElements.define(info.is, Class(info));\n *\n * See `Class` for details on valid legacy metadata format for `info`.\n *\n * @global\n * @override\n * @function\n * @param {!PolymerInit} info Object containing Polymer metadata and functions\n * to become class methods.\n * @return {function(new: HTMLElement)} Generated class\n * @suppress {duplicate, invalidCasts, checkTypes}\n */\nconst Polymer = function(info) {\n // if input is a `class` (aka a function with a prototype), use the prototype\n // remember that the `constructor` will never be called\n let klass;\n if (typeof info === 'function') {\n klass = info;\n } else {\n klass = Polymer.Class(info);\n }\n customElements.define(klass.is, /** @type {!HTMLElement} */(klass));\n return klass;\n};\n\nPolymer.Class = Class;\n\nexport { Polymer };","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nimport { calculateSplices } from './array-splice.js';\nimport { microTask } from './async.js';\n\n/**\n * Returns true if `node` is a slot element\n * @param {!Node} node Node to test.\n * @return {boolean} Returns true if the given `node` is a slot\n * @private\n */\nfunction isSlot(node) {\n return (node.localName === 'slot');\n}\n\n/**\n * Class that listens for changes (additions or removals) to\n * \"flattened nodes\" on a given `node`. The list of flattened nodes consists\n * of a node's children and, for any children that are `` assigned to it, then the flattened\n * nodes list is ``. If the `` has other\n * `` elements assigned to it, these are flattened as well.\n *\n * The provided `callback` is called whenever any change to this list\n * of flattened nodes occurs, where an addition or removal of a node is\n * considered a change. The `callback` is called with one argument, an object\n * containing an array of any `addedNodes` and `removedNodes`.\n *\n * Note: the callback is called asynchronous to any changes\n * at a microtask checkpoint. This is because observation is performed using\n * `MutationObserver` and the `` element's `slotchange` event which\n * are asynchronous.\n *\n * An example:\n * ```js\n * class TestSelfObserve extends PolymerElement {\n * static get is() { return 'test-self-observe';}\n * connectedCallback() {\n * super.connectedCallback();\n * this._observer = new FlattenedNodesObserver(this, (info) => {\n * this.info = info;\n * });\n * }\n * disconnectedCallback() {\n * super.disconnectedCallback();\n * this._observer.disconnect();\n * }\n * }\n * customElements.define(TestSelfObserve.is, TestSelfObserve);\n * ```\n *\n * @summary Class that listens for changes (additions or removals) to\n * \"flattened nodes\" on a given `node`.\n */\nexport class FlattenedNodesObserver {\n\n /**\n * Returns the list of flattened nodes for the given `node`.\n * This list consists of a node's children and, for any children\n * that are `` elements, the expanded flattened list of `assignedNodes`.\n * For example, if the observed node has children `` has one `
` assigned to it, then the flattened\n * nodes list is ``. If the `` has other\n * `` elements assigned to it, these are flattened as well.\n *\n * @param {!HTMLElement|!HTMLSlotElement} node The node for which to\n * return the list of flattened nodes.\n * @return {!Array} The list of flattened nodes for the given `node`.\n * @nocollapse See https://github.com/google/closure-compiler/issues/2763\n */\n static getFlattenedNodes(node) {\n if (isSlot(node)) {\n node = /** @type {!HTMLSlotElement} */(node); // eslint-disable-line no-self-assign\n return node.assignedNodes({flatten: true});\n } else {\n return Array.from(node.childNodes).map((node) => {\n if (isSlot(node)) {\n node = /** @type {!HTMLSlotElement} */(node); // eslint-disable-line no-self-assign\n return node.assignedNodes({flatten: true});\n } else {\n return [node];\n }\n }).reduce((a, b) => a.concat(b), []);\n }\n }\n\n /**\n * @param {!HTMLElement} target Node on which to listen for changes.\n * @param {?function(this: Element, { target: !HTMLElement, addedNodes: !Array, removedNodes: !Array }):void} callback Function called when there are additions\n * or removals from the target's list of flattened nodes.\n */\n constructor(target, callback) {\n /**\n * @type {MutationObserver}\n * @private\n */\n this._shadyChildrenObserver = null;\n /**\n * @type {MutationObserver}\n * @private\n */\n this._nativeChildrenObserver = null;\n this._connected = false;\n /**\n * @type {!HTMLElement}\n * @private\n */\n this._target = target;\n this.callback = callback;\n this._effectiveNodes = [];\n this._observer = null;\n this._scheduled = false;\n /**\n * @type {function()}\n * @private\n */\n this._boundSchedule = () => {\n this._schedule();\n };\n this.connect();\n this._schedule();\n }\n\n /**\n * Activates an observer. This method is automatically called when\n * a `FlattenedNodesObserver` is created. It should only be called to\n * re-activate an observer that has been deactivated via the `disconnect` method.\n *\n * @return {void}\n */\n connect() {\n if (isSlot(this._target)) {\n this._listenSlots([this._target]);\n } else if (this._target.children) {\n this._listenSlots(\n /** @type {!NodeList} */ (this._target.children));\n if (window.ShadyDOM) {\n this._shadyChildrenObserver =\n ShadyDOM.observeChildren(this._target, (mutations) => {\n this._processMutations(mutations);\n });\n } else {\n this._nativeChildrenObserver =\n new MutationObserver((mutations) => {\n this._processMutations(mutations);\n });\n this._nativeChildrenObserver.observe(this._target, {childList: true});\n }\n }\n this._connected = true;\n }\n\n /**\n * Deactivates the flattened nodes observer. After calling this method\n * the observer callback will not be called when changes to flattened nodes\n * occur. The `connect` method may be subsequently called to reactivate\n * the observer.\n *\n * @return {void}\n */\n disconnect() {\n if (isSlot(this._target)) {\n this._unlistenSlots([this._target]);\n } else if (this._target.children) {\n this._unlistenSlots(\n /** @type {!NodeList} */ (this._target.children));\n if (window.ShadyDOM && this._shadyChildrenObserver) {\n ShadyDOM.unobserveChildren(this._shadyChildrenObserver);\n this._shadyChildrenObserver = null;\n } else if (this._nativeChildrenObserver) {\n this._nativeChildrenObserver.disconnect();\n this._nativeChildrenObserver = null;\n }\n }\n this._connected = false;\n }\n\n /**\n * @return {void}\n * @private\n */\n _schedule() {\n if (!this._scheduled) {\n this._scheduled = true;\n microTask.run(() => this.flush());\n }\n }\n\n /**\n * @param {Array} mutations Mutations signaled by the mutation observer\n * @return {void}\n * @private\n */\n _processMutations(mutations) {\n this._processSlotMutations(mutations);\n this.flush();\n }\n\n /**\n * @param {Array} mutations Mutations signaled by the mutation observer\n * @return {void}\n * @private\n */\n _processSlotMutations(mutations) {\n if (mutations) {\n for (let i=0; i < mutations.length; i++) {\n let mutation = mutations[i];\n if (mutation.addedNodes) {\n this._listenSlots(mutation.addedNodes);\n }\n if (mutation.removedNodes) {\n this._unlistenSlots(mutation.removedNodes);\n }\n }\n }\n }\n\n /**\n * Flushes the observer causing any pending changes to be immediately\n * delivered the observer callback. By default these changes are delivered\n * asynchronously at the next microtask checkpoint.\n *\n * @return {boolean} Returns true if any pending changes caused the observer\n * callback to run.\n */\n flush() {\n if (!this._connected) {\n return false;\n }\n if (window.ShadyDOM) {\n ShadyDOM.flush();\n }\n if (this._nativeChildrenObserver) {\n this._processSlotMutations(this._nativeChildrenObserver.takeRecords());\n } else if (this._shadyChildrenObserver) {\n this._processSlotMutations(this._shadyChildrenObserver.takeRecords());\n }\n this._scheduled = false;\n let info = {\n target: this._target,\n addedNodes: [],\n removedNodes: []\n };\n let newNodes = this.constructor.getFlattenedNodes(this._target);\n let splices = calculateSplices(newNodes,\n this._effectiveNodes);\n // process removals\n for (let i=0, s; (i|!NodeList} nodeList Nodes that could change\n * @return {void}\n * @private\n */\n _listenSlots(nodeList) {\n for (let i=0; i < nodeList.length; i++) {\n let n = nodeList[i];\n if (isSlot(n)) {\n n.addEventListener('slotchange', this._boundSchedule);\n }\n }\n }\n\n /**\n * @param {!Array|!NodeList} nodeList Nodes that could change\n * @return {void}\n * @private\n */\n _unlistenSlots(nodeList) {\n for (let i=0; i < nodeList.length; i++) {\n let n = nodeList[i];\n if (isSlot(n)) {\n n.removeEventListener('slotchange', this._boundSchedule);\n }\n }\n }\n\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport '../utils/settings.js';\nimport { FlattenedNodesObserver } from '../utils/flattened-nodes-observer.js';\nexport { flush, enqueueDebouncer as addDebouncer } from '../utils/flush.js';\n/* eslint-disable no-unused-vars */\nimport { Debouncer } from '../utils/debounce.js'; // used in type annotations\n/* eslint-enable no-unused-vars */\n\nconst p = Element.prototype;\n/**\n * @const {function(this:Node, string): boolean}\n */\nconst normalizedMatchesSelector = p.matches || p.matchesSelector ||\n p.mozMatchesSelector || p.msMatchesSelector ||\n p.oMatchesSelector || p.webkitMatchesSelector;\n\n/**\n * Cross-platform `element.matches` shim.\n *\n * @function matchesSelector\n * @param {!Node} node Node to check selector against\n * @param {string} selector Selector to match\n * @return {boolean} True if node matched selector\n */\nexport const matchesSelector = function(node, selector) {\n return normalizedMatchesSelector.call(node, selector);\n};\n\n/**\n * Node API wrapper class returned from `Polymer.dom.(target)` when\n * `target` is a `Node`.\n *\n */\nexport class DomApi {\n\n /**\n * @param {Node} node Node for which to create a Polymer.dom helper object.\n */\n constructor(node) {\n this.node = node;\n }\n\n /**\n * Returns an instance of `FlattenedNodesObserver` that\n * listens for node changes on this element.\n *\n * @param {function(this:HTMLElement, { target: !HTMLElement, addedNodes: !Array, removedNodes: !Array }):void} callback Called when direct or distributed children\n * of this element changes\n * @return {!FlattenedNodesObserver} Observer instance\n */\n observeNodes(callback) {\n return new FlattenedNodesObserver(\n /** @type {!HTMLElement} */(this.node), callback);\n }\n\n /**\n * Disconnects an observer previously created via `observeNodes`\n *\n * @param {!FlattenedNodesObserver} observerHandle Observer instance\n * to disconnect.\n * @return {void}\n */\n unobserveNodes(observerHandle) {\n observerHandle.disconnect();\n }\n\n /**\n * Provided as a backwards-compatible API only. This method does nothing.\n * @return {void}\n */\n notifyObserver() {}\n\n /**\n * Returns true if the provided node is contained with this element's\n * light-DOM children or shadow root, including any nested shadow roots\n * of children therein.\n *\n * @param {Node} node Node to test\n * @return {boolean} Returns true if the given `node` is contained within\n * this element's light or shadow DOM.\n */\n deepContains(node) {\n if (this.node.contains(node)) {\n return true;\n }\n let n = node;\n let doc = node.ownerDocument;\n // walk from node to `this` or `document`\n while (n && n !== doc && n !== this.node) {\n // use logical parentnode, or native ShadowRoot host\n n = n.parentNode || n.host;\n }\n return n === this.node;\n }\n\n /**\n * Returns the root node of this node. Equivalent to `getRootNode()`.\n *\n * @return {Node} Top most element in the dom tree in which the node\n * exists. If the node is connected to a document this is either a\n * shadowRoot or the document; otherwise, it may be the node\n * itself or a node or document fragment containing it.\n */\n getOwnerRoot() {\n return this.node.getRootNode();\n }\n\n /**\n * For slot elements, returns the nodes assigned to the slot; otherwise\n * an empty array. It is equivalent to `.addignedNodes({flatten:true})`.\n *\n * @return {!Array} Array of assigned nodes\n */\n getDistributedNodes() {\n return (this.node.localName === 'slot') ?\n this.node.assignedNodes({flatten: true}) :\n [];\n }\n\n /**\n * Returns an array of all slots this element was distributed to.\n *\n * @return {!Array} Description\n */\n getDestinationInsertionPoints() {\n let ip$ = [];\n let n = this.node.assignedSlot;\n while (n) {\n ip$.push(n);\n n = n.assignedSlot;\n }\n return ip$;\n }\n\n /**\n * Calls `importNode` on the `ownerDocument` for this node.\n *\n * @param {!Node} node Node to import\n * @param {boolean} deep True if the node should be cloned deeply during\n * import\n * @return {Node} Clone of given node imported to this owner document\n */\n importNode(node, deep) {\n let doc = this.node instanceof Document ? this.node :\n this.node.ownerDocument;\n return doc.importNode(node, deep);\n }\n\n /**\n * @return {!Array} Returns a flattened list of all child nodes and\n * nodes assigned to child slots.\n */\n getEffectiveChildNodes() {\n return FlattenedNodesObserver.getFlattenedNodes(\n /** @type {!HTMLElement} */ (this.node));\n }\n\n /**\n * Returns a filtered list of flattened child elements for this element based\n * on the given selector.\n *\n * @param {string} selector Selector to filter nodes against\n * @return {!Array} List of flattened child elements\n */\n queryDistributedElements(selector) {\n let c$ = this.getEffectiveChildNodes();\n let list = [];\n for (let i=0, l=c$.length, c; (i} The nodes this event propagated through\n */\n get path() {\n return this.event.composedPath();\n }\n}\n\n/**\n * @function\n * @param {boolean=} deep\n * @return {!Node}\n */\nDomApi.prototype.cloneNode;\n/**\n * @function\n * @param {!Node} node\n * @return {!Node}\n */\nDomApi.prototype.appendChild;\n/**\n * @function\n * @param {!Node} newChild\n * @param {Node} refChild\n * @return {!Node}\n */\nDomApi.prototype.insertBefore;\n/**\n * @function\n * @param {!Node} node\n * @return {!Node}\n */\nDomApi.prototype.removeChild;\n/**\n * @function\n * @param {!Node} oldChild\n * @param {!Node} newChild\n * @return {!Node}\n */\nDomApi.prototype.replaceChild;\n/**\n * @function\n * @param {string} name\n * @param {string} value\n * @return {void}\n */\nDomApi.prototype.setAttribute;\n/**\n * @function\n * @param {string} name\n * @return {void}\n */\nDomApi.prototype.removeAttribute;\n/**\n * @function\n * @param {string} selector\n * @return {?Element}\n */\nDomApi.prototype.querySelector;\n/**\n * @function\n * @param {string} selector\n * @return {!NodeList}\n */\nDomApi.prototype.querySelectorAll;\n\n/** @type {?Node} */\nDomApi.prototype.parentNode;\n/** @type {?Node} */\nDomApi.prototype.firstChild;\n/** @type {?Node} */\nDomApi.prototype.lastChild;\n/** @type {?Node} */\nDomApi.prototype.nextSibling;\n/** @type {?Node} */\nDomApi.prototype.previousSibling;\n/** @type {?HTMLElement} */\nDomApi.prototype.firstElementChild;\n/** @type {?HTMLElement} */\nDomApi.prototype.lastElementChild;\n/** @type {?HTMLElement} */\nDomApi.prototype.nextElementSibling;\n/** @type {?HTMLElement} */\nDomApi.prototype.previousElementSibling;\n/** @type {!Array} */\nDomApi.prototype.childNodes;\n/** @type {!Array} */\nDomApi.prototype.children;\n/** @type {?DOMTokenList} */\nDomApi.prototype.classList;\n\n/** @type {string} */\nDomApi.prototype.textContent;\n/** @type {string} */\nDomApi.prototype.innerHTML;\n\nforwardMethods(DomApi.prototype, [\n 'cloneNode', 'appendChild', 'insertBefore', 'removeChild',\n 'replaceChild', 'setAttribute', 'removeAttribute',\n 'querySelector', 'querySelectorAll'\n]);\n\nforwardReadOnlyProperties(DomApi.prototype, [\n 'parentNode', 'firstChild', 'lastChild',\n 'nextSibling', 'previousSibling', 'firstElementChild',\n 'lastElementChild', 'nextElementSibling', 'previousElementSibling',\n 'childNodes', 'children', 'classList'\n]);\n\nforwardProperties(DomApi.prototype, [\n 'textContent', 'innerHTML'\n]);\n\n/**\n * Legacy DOM and Event manipulation API wrapper factory used to abstract\n * differences between native Shadow DOM and \"Shady DOM\" when polyfilling on\n * older browsers.\n *\n * Note that in Polymer 2.x use of `Polymer.dom` is no longer required and\n * in the majority of cases simply facades directly to the standard native\n * API.\n *\n * @summary Legacy DOM and Event manipulation API wrapper factory used to\n * abstract differences between native Shadow DOM and \"Shady DOM.\"\n * @param {(Node|Event)=} obj Node or event to operate on\n * @return {!DomApi|!EventApi} Wrapper providing either node API or event API\n */\nexport const dom = function(obj) {\n obj = obj || document;\n if (!obj.__domApi) {\n let helper;\n if (obj instanceof Event) {\n helper = new EventApi(obj);\n } else {\n helper = new DomApi(obj);\n }\n obj.__domApi = helper;\n }\n return obj.__domApi;\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/* eslint-disable no-unused-vars */\n/**\n * When using Closure Compiler, JSCompiler_renameProperty(property, object) is replaced by the munged name for object[property]\n * We cannot alias this function, so we have to use a small shim that has the same behavior when not compiling.\n *\n * @param {string} prop Property name\n * @param {?Object} obj Reference object\n * @return {string} Potentially renamed property name\n */\nwindow.JSCompiler_renameProperty = function(prop, obj) {\n return prop;\n};\n/* eslint-enable */\n\nexport {};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\n// unique global id for deduping mixins.\nlet dedupeId = 0;\n\n/**\n * @constructor\n * @extends {Function}\n * @private\n */\nfunction MixinFunction(){}\n/** @type {(WeakMap | undefined)} */\nMixinFunction.prototype.__mixinApplications;\n/** @type {(Object | undefined)} */\nMixinFunction.prototype.__mixinSet;\n\n/* eslint-disable valid-jsdoc */\n/**\n * Wraps an ES6 class expression mixin such that the mixin is only applied\n * if it has not already been applied its base argument. Also memoizes mixin\n * applications.\n *\n * @template T\n * @param {T} mixin ES6 class expression mixin to wrap\n * @return {T}\n * @suppress {invalidCasts}\n */\nexport const dedupingMixin = function(mixin) {\n let mixinApplications = /** @type {!MixinFunction} */(mixin).__mixinApplications;\n if (!mixinApplications) {\n mixinApplications = new WeakMap();\n /** @type {!MixinFunction} */(mixin).__mixinApplications = mixinApplications;\n }\n // maintain a unique id for each mixin\n let mixinDedupeId = dedupeId++;\n function dedupingMixin(base) {\n let baseSet = /** @type {!MixinFunction} */(base).__mixinSet;\n if (baseSet && baseSet[mixinDedupeId]) {\n return base;\n }\n let map = mixinApplications;\n let extended = map.get(base);\n if (!extended) {\n extended = /** @type {!Function} */(mixin)(base);\n map.set(base, extended);\n }\n // copy inherited mixin set from the extended class, or the base class\n // NOTE: we avoid use of Set here because some browser (IE11)\n // cannot extend a base Set via the constructor.\n let mixinSet = Object.create(/** @type {!MixinFunction} */(extended).__mixinSet || baseSet || null);\n mixinSet[mixinDedupeId] = true;\n /** @type {!MixinFunction} */(extended).__mixinSet = mixinSet;\n return extended;\n }\n\n return dedupingMixin;\n};\n/* eslint-enable valid-jsdoc */\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nimport { pathFromUrl } from './resolve-url.js';\nexport const useShadow = !(window.ShadyDOM);\nexport const useNativeCSSProperties = Boolean(!window.ShadyCSS || window.ShadyCSS.nativeCss);\nexport const useNativeCustomElements = !(window.customElements.polyfillWrapFlushCallback);\n\n\n/**\n * Globally settable property that is automatically assigned to\n * `ElementMixin` instances, useful for binding in templates to\n * make URL's relative to an application's root. Defaults to the main\n * document URL, but can be overridden by users. It may be useful to set\n * `rootPath` to provide a stable application mount path when\n * using client side routing.\n */\nexport let rootPath = undefined ||\n pathFromUrl(document.baseURI || window.location.href);\n\n/**\n * Sets the global rootPath property used by `ElementMixin` and\n * available via `rootPath`.\n *\n * @param {string} path The new root path\n * @return {void}\n */\nexport const setRootPath = function(path) {\n rootPath = path;\n};\n\n/**\n * A global callback used to sanitize any value before inserting it into the DOM.\n * The callback signature is:\n *\n * function sanitizeDOMValue(value, name, type, node) { ... }\n *\n * Where:\n *\n * `value` is the value to sanitize.\n * `name` is the name of an attribute or property (for example, href).\n * `type` indicates where the value is being inserted: one of property, attribute, or text.\n * `node` is the node where the value is being inserted.\n *\n * @type {(function(*,string,string,Node):*)|undefined}\n */\nexport let sanitizeDOMValue = window.Polymer && window.Polymer.sanitizeDOMValue || undefined;\n\n/**\n * Sets the global sanitizeDOMValue available via this module's exported\n * `sanitizeDOMValue` variable.\n *\n * @param {(function(*,string,string,Node):*)|undefined} newSanitizeDOMValue the global sanitizeDOMValue callback\n * @return {void}\n */\nexport const setSanitizeDOMValue = function(newSanitizeDOMValue) {\n sanitizeDOMValue = newSanitizeDOMValue;\n};\n\n/**\n * Globally settable property to make Polymer Gestures use passive TouchEvent listeners when recognizing gestures.\n * When set to `true`, gestures made from touch will not be able to prevent scrolling, allowing for smoother\n * scrolling performance.\n * Defaults to `false` for backwards compatibility.\n */\nexport let passiveTouchGestures = false;\n\n/**\n * Sets `passiveTouchGestures` globally for all elements using Polymer Gestures.\n *\n * @param {boolean} usePassive enable or disable passive touch gestures globally\n * @return {void}\n */\nexport const setPassiveTouchGestures = function(usePassive) {\n passiveTouchGestures = usePassive;\n};\n\n/**\n * Setting to ensure Polymer template evaluation only occurs based on tempates\n * defined in trusted script. When true, `` re-registration is\n * disallowed, `` is disabled, and ``/``\n * templates will only evaluate in the context of a trusted element template.\n */\nexport let strictTemplatePolicy = false;\n\n/**\n * Sets `strictTemplatePolicy` globally for all elements\n *\n * @param {boolean} useStrictPolicy enable or disable strict template policy\n * globally\n * @return {void}\n */\nexport const setStrictTemplatePolicy = function(useStrictPolicy) {\n strictTemplatePolicy = useStrictPolicy;\n};\n\n/**\n * Setting to enable dom-module lookup from Polymer.Element. By default,\n * templates must be defined in script using the `static get template()`\n * getter and the `html` tag function. To enable legacy loading of templates\n * via dom-module, set this flag to true.\n */\nexport let allowTemplateFromDomModule = false;\n\n/**\n * Sets `lookupTemplateFromDomModule` globally for all elements\n *\n * @param {boolean} allowDomModule enable or disable template lookup \n * globally\n * @return {void}\n */\nexport const setAllowTemplateFromDomModule = function(allowDomModule) {\n allowTemplateFromDomModule = allowDomModule;\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * @fileoverview\n *\n * This module provides a number of strategies for enqueuing asynchronous\n * tasks. Each sub-module provides a standard `run(fn)` interface that returns a\n * handle, and a `cancel(handle)` interface for canceling async tasks before\n * they run.\n *\n * @summary Module that provides a number of strategies for enqueuing\n * asynchronous tasks.\n */\n\nimport './boot.js';\n\n// Microtask implemented using Mutation Observer\nlet microtaskCurrHandle = 0;\nlet microtaskLastHandle = 0;\nlet microtaskCallbacks = [];\nlet microtaskNodeContent = 0;\nlet microtaskNode = document.createTextNode('');\nnew window.MutationObserver(microtaskFlush).observe(microtaskNode, {characterData: true});\n\nfunction microtaskFlush() {\n const len = microtaskCallbacks.length;\n for (let i = 0; i < len; i++) {\n let cb = microtaskCallbacks[i];\n if (cb) {\n try {\n cb();\n } catch (e) {\n setTimeout(() => { throw e; });\n }\n }\n }\n microtaskCallbacks.splice(0, len);\n microtaskLastHandle += len;\n}\n\n/**\n * Async interface wrapper around `setTimeout`.\n *\n * @namespace\n * @summary Async interface wrapper around `setTimeout`.\n */\nconst timeOut = {\n /**\n * Returns a sub-module with the async interface providing the provided\n * delay.\n *\n * @memberof timeOut\n * @param {number=} delay Time to wait before calling callbacks in ms\n * @return {!AsyncInterface} An async timeout interface\n */\n after(delay) {\n return {\n run(fn) { return window.setTimeout(fn, delay); },\n cancel(handle) {\n window.clearTimeout(handle);\n }\n };\n },\n /**\n * Enqueues a function called in the next task.\n *\n * @memberof timeOut\n * @param {!Function} fn Callback to run\n * @param {number=} delay Delay in milliseconds\n * @return {number} Handle used for canceling task\n */\n run(fn, delay) {\n return window.setTimeout(fn, delay);\n },\n /**\n * Cancels a previously enqueued `timeOut` callback.\n *\n * @memberof timeOut\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n window.clearTimeout(handle);\n }\n};\nexport {timeOut};\n\n/**\n * Async interface wrapper around `requestAnimationFrame`.\n *\n * @namespace\n * @summary Async interface wrapper around `requestAnimationFrame`.\n */\nconst animationFrame = {\n /**\n * Enqueues a function called at `requestAnimationFrame` timing.\n *\n * @memberof animationFrame\n * @param {function(number):void} fn Callback to run\n * @return {number} Handle used for canceling task\n */\n run(fn) {\n return window.requestAnimationFrame(fn);\n },\n /**\n * Cancels a previously enqueued `animationFrame` callback.\n *\n * @memberof animationFrame\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n window.cancelAnimationFrame(handle);\n }\n};\nexport {animationFrame};\n\n/**\n * Async interface wrapper around `requestIdleCallback`. Falls back to\n * `setTimeout` on browsers that do not support `requestIdleCallback`.\n *\n * @namespace\n * @summary Async interface wrapper around `requestIdleCallback`.\n */\nconst idlePeriod = {\n /**\n * Enqueues a function called at `requestIdleCallback` timing.\n *\n * @memberof idlePeriod\n * @param {function(!IdleDeadline):void} fn Callback to run\n * @return {number} Handle used for canceling task\n */\n run(fn) {\n return window.requestIdleCallback ?\n window.requestIdleCallback(fn) :\n window.setTimeout(fn, 16);\n },\n /**\n * Cancels a previously enqueued `idlePeriod` callback.\n *\n * @memberof idlePeriod\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n window.cancelIdleCallback ?\n window.cancelIdleCallback(handle) :\n window.clearTimeout(handle);\n }\n};\nexport {idlePeriod};\n\n/**\n * Async interface for enqueuing callbacks that run at microtask timing.\n *\n * Note that microtask timing is achieved via a single `MutationObserver`,\n * and thus callbacks enqueued with this API will all run in a single\n * batch, and not interleaved with other microtasks such as promises.\n * Promises are avoided as an implementation choice for the time being\n * due to Safari bugs that cause Promises to lack microtask guarantees.\n *\n * @namespace\n * @summary Async interface for enqueuing callbacks that run at microtask\n * timing.\n */\nconst microTask = {\n\n /**\n * Enqueues a function called at microtask timing.\n *\n * @memberof microTask\n * @param {!Function=} callback Callback to run\n * @return {number} Handle used for canceling task\n */\n run(callback) {\n microtaskNode.textContent = microtaskNodeContent++;\n microtaskCallbacks.push(callback);\n return microtaskCurrHandle++;\n },\n\n /**\n * Cancels a previously enqueued `microTask` callback.\n *\n * @memberof microTask\n * @param {number} handle Handle returned from `run` of callback to cancel\n * @return {void}\n */\n cancel(handle) {\n const idx = handle - microtaskLastHandle;\n if (idx >= 0) {\n if (!microtaskCallbacks[idx]) {\n throw new Error('invalid async handle: ' + handle);\n }\n microtaskCallbacks[idx] = null;\n }\n }\n\n};\nexport {microTask};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nimport './mixin.js';\nimport './async.js';\n\n/**\n * @summary Collapse multiple callbacks into one invocation after a timer.\n */\nexport class Debouncer {\n constructor() {\n this._asyncModule = null;\n this._callback = null;\n this._timer = null;\n }\n /**\n * Sets the scheduler; that is, a module with the Async interface,\n * a callback and optional arguments to be passed to the run function\n * from the async module.\n *\n * @param {!AsyncInterface} asyncModule Object with Async interface.\n * @param {function()} callback Callback to run.\n * @return {void}\n */\n setConfig(asyncModule, callback) {\n this._asyncModule = asyncModule;\n this._callback = callback;\n this._timer = this._asyncModule.run(() => {\n this._timer = null;\n this._callback();\n });\n }\n /**\n * Cancels an active debouncer and returns a reference to itself.\n *\n * @return {void}\n */\n cancel() {\n if (this.isActive()) {\n this._asyncModule.cancel(/** @type {number} */(this._timer));\n this._timer = null;\n }\n }\n /**\n * Flushes an active debouncer and returns a reference to itself.\n *\n * @return {void}\n */\n flush() {\n if (this.isActive()) {\n this.cancel();\n this._callback();\n }\n }\n /**\n * Returns true if the debouncer is active.\n *\n * @return {boolean} True if active.\n */\n isActive() {\n return this._timer != null;\n }\n /**\n * Creates a debouncer if no debouncer is passed as a parameter\n * or it cancels an active debouncer otherwise. The following\n * example shows how a debouncer can be called multiple times within a\n * microtask and \"debounced\" such that the provided callback function is\n * called once. Add this method to a custom element:\n *\n * ```js\n * import {microTask} from '@polymer/polymer/lib/utils/async.js';\n * import {Debouncer} from '@polymer/polymer/lib/utils/debounce.js';\n * // ...\n *\n * _debounceWork() {\n * this._debounceJob = Debouncer.debounce(this._debounceJob,\n * microTask, () => this._doWork());\n * }\n * ```\n *\n * If the `_debounceWork` method is called multiple times within the same\n * microtask, the `_doWork` function will be called only once at the next\n * microtask checkpoint.\n *\n * Note: In testing it is often convenient to avoid asynchrony. To accomplish\n * this with a debouncer, you can use `enqueueDebouncer` and\n * `flush`. For example, extend the above example by adding\n * `enqueueDebouncer(this._debounceJob)` at the end of the\n * `_debounceWork` method. Then in a test, call `flush` to ensure\n * the debouncer has completed.\n *\n * @param {Debouncer?} debouncer Debouncer object.\n * @param {!AsyncInterface} asyncModule Object with Async interface\n * @param {function()} callback Callback to run.\n * @return {!Debouncer} Returns a debouncer object.\n */\n static debounce(debouncer, asyncModule, callback) {\n if (debouncer instanceof Debouncer) {\n debouncer.cancel();\n } else {\n debouncer = new Debouncer();\n }\n debouncer.setConfig(asyncModule, callback);\n return debouncer;\n }\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n/* eslint-disable no-unused-vars */\nimport { Debouncer } from '../utils/debounce.js'; // used in type annotations\n/* eslint-enable no-unused-vars */\n\nlet debouncerQueue = [];\n\n/**\n * Adds a `Debouncer` to a list of globally flushable tasks.\n *\n * @param {!Debouncer} debouncer Debouncer to enqueue\n * @return {void}\n */\nexport const enqueueDebouncer = function(debouncer) {\n debouncerQueue.push(debouncer);\n};\n\nfunction flushDebouncers() {\n const didFlush = Boolean(debouncerQueue.length);\n while (debouncerQueue.length) {\n try {\n debouncerQueue.shift().flush();\n } catch(e) {\n setTimeout(() => {\n throw e;\n });\n }\n }\n return didFlush;\n}\n\n/**\n * Forces several classes of asynchronously queued tasks to flush:\n * - Debouncers added via `enqueueDebouncer`\n * - ShadyDOM distribution\n *\n * @return {void}\n */\nexport const flush = function() {\n let shadyDOM, debouncers;\n do {\n shadyDOM = window.ShadyDOM && ShadyDOM.flush();\n if (window.ShadyCSS && window.ShadyCSS.ScopingShim) {\n window.ShadyCSS.ScopingShim.flush();\n }\n debouncers = flushDebouncers();\n } while (shadyDOM || debouncers);\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nimport { ElementMixin, version } from './lib/mixins/element-mixin.js';\nexport { html } from './lib/utils/html-tag.js';\n\nexport { version };\n\n/**\n * Base class that provides the core API for Polymer's meta-programming\n * features including template stamping, data-binding, attribute deserialization,\n * and property change observation.\n *\n * @customElement\n * @polymer\n * @constructor\n * @implements {Polymer_ElementMixin}\n * @extends HTMLElement\n * @appliesMixin ElementMixin\n * @summary Custom element base class that provides the core API for Polymer's\n * key meta-programming features including template stamping, data-binding,\n * attribute deserialization, and property change observation\n */\nexport const PolymerElement = ElementMixin(HTMLElement);\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\nlet CSS_URL_RX = /(url\\()([^)]*)(\\))/g;\nlet ABS_URL = /(^\\/)|(^#)|(^[\\w-\\d]*:)/;\nlet workingURL;\nlet resolveDoc;\n/**\n * Resolves the given URL against the provided `baseUri'.\n *\n * Note that this function performs no resolution for URLs that start\n * with `/` (absolute URLs) or `#` (hash identifiers). For general purpose\n * URL resolution, use `window.URL`.\n *\n * @param {string} url Input URL to resolve\n * @param {?string=} baseURI Base URI to resolve the URL against\n * @return {string} resolved URL\n */\nexport function resolveUrl(url, baseURI) {\n if (url && ABS_URL.test(url)) {\n return url;\n }\n // Lazy feature detection.\n if (workingURL === undefined) {\n workingURL = false;\n try {\n const u = new URL('b', 'http://a');\n u.pathname = 'c%20d';\n workingURL = (u.href === 'http://a/c%20d');\n } catch (e) {\n // silently fail\n }\n }\n if (!baseURI) {\n baseURI = document.baseURI || window.location.href;\n }\n if (workingURL) {\n return (new URL(url, baseURI)).href;\n }\n // Fallback to creating an anchor into a disconnected document.\n if (!resolveDoc) {\n resolveDoc = document.implementation.createHTMLDocument('temp');\n resolveDoc.base = resolveDoc.createElement('base');\n resolveDoc.head.appendChild(resolveDoc.base);\n resolveDoc.anchor = resolveDoc.createElement('a');\n resolveDoc.body.appendChild(resolveDoc.anchor);\n }\n resolveDoc.base.href = baseURI;\n resolveDoc.anchor.href = url;\n return resolveDoc.anchor.href || url;\n\n}\n\n/**\n * Resolves any relative URL's in the given CSS text against the provided\n * `ownerDocument`'s `baseURI`.\n *\n * @param {string} cssText CSS text to process\n * @param {string} baseURI Base URI to resolve the URL against\n * @return {string} Processed CSS text with resolved URL's\n */\nexport function resolveCss(cssText, baseURI) {\n return cssText.replace(CSS_URL_RX, function(m, pre, url, post) {\n return pre + '\\'' +\n resolveUrl(url.replace(/[\"']/g, ''), baseURI) +\n '\\'' + post;\n });\n}\n\n/**\n * Returns a path from a given `url`. The path includes the trailing\n * `/` from the url.\n *\n * @param {string} url Input URL to transform\n * @return {string} resolved path\n */\nexport function pathFromUrl(url) {\n return url.substring(0, url.lastIndexOf('/') + 1);\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport './boot.js';\n\n/**\n * Module with utilities for manipulating structured data path strings.\n *\n * @summary Module with utilities for manipulating structured data path strings.\n */\n\n/**\n * Returns true if the given string is a structured data path (has dots).\n *\n * Example:\n *\n * ```\n * isPath('foo.bar.baz') // true\n * isPath('foo') // false\n * ```\n *\n * @param {string} path Path string\n * @return {boolean} True if the string contained one or more dots\n */\nexport function isPath(path) {\n return path.indexOf('.') >= 0;\n}\n\n/**\n * Returns the root property name for the given path.\n *\n * Example:\n *\n * ```\n * root('foo.bar.baz') // 'foo'\n * root('foo') // 'foo'\n * ```\n *\n * @param {string} path Path string\n * @return {string} Root property name\n */\nexport function root(path) {\n let dotIndex = path.indexOf('.');\n if (dotIndex === -1) {\n return path;\n }\n return path.slice(0, dotIndex);\n}\n\n/**\n * Given `base` is `foo.bar`, `foo` is an ancestor, `foo.bar` is not\n * Returns true if the given path is an ancestor of the base path.\n *\n * Example:\n *\n * ```\n * isAncestor('foo.bar', 'foo') // true\n * isAncestor('foo.bar', 'foo.bar') // false\n * isAncestor('foo.bar', 'foo.bar.baz') // false\n * ```\n *\n * @param {string} base Path string to test against.\n * @param {string} path Path string to test.\n * @return {boolean} True if `path` is an ancestor of `base`.\n */\nexport function isAncestor(base, path) {\n // base.startsWith(path + '.');\n return base.indexOf(path + '.') === 0;\n}\n\n/**\n * Given `base` is `foo.bar`, `foo.bar.baz` is an descendant\n *\n * Example:\n *\n * ```\n * isDescendant('foo.bar', 'foo.bar.baz') // true\n * isDescendant('foo.bar', 'foo.bar') // false\n * isDescendant('foo.bar', 'foo') // false\n * ```\n *\n * @param {string} base Path string to test against.\n * @param {string} path Path string to test.\n * @return {boolean} True if `path` is a descendant of `base`.\n */\nexport function isDescendant(base, path) {\n // path.startsWith(base + '.');\n return path.indexOf(base + '.') === 0;\n}\n\n/**\n * Replaces a previous base path with a new base path, preserving the\n * remainder of the path.\n *\n * User must ensure `path` has a prefix of `base`.\n *\n * Example:\n *\n * ```\n * translate('foo.bar', 'zot', 'foo.bar.baz') // 'zot.baz'\n * ```\n *\n * @param {string} base Current base string to remove\n * @param {string} newBase New base string to replace with\n * @param {string} path Path to translate\n * @return {string} Translated string\n */\nexport function translate(base, newBase, path) {\n return newBase + path.slice(base.length);\n}\n\n/**\n * @param {string} base Path string to test against\n * @param {string} path Path string to test\n * @return {boolean} True if `path` is equal to `base`\n */\nexport function matches(base, path) {\n return (base === path) ||\n isAncestor(base, path) ||\n isDescendant(base, path);\n}\n\n/**\n * Converts array-based paths to flattened path. String-based paths\n * are returned as-is.\n *\n * Example:\n *\n * ```\n * normalize(['foo.bar', 0, 'baz']) // 'foo.bar.0.baz'\n * normalize('foo.bar.0.baz') // 'foo.bar.0.baz'\n * ```\n *\n * @param {string | !Array} path Input path\n * @return {string} Flattened path\n */\nexport function normalize(path) {\n if (Array.isArray(path)) {\n let parts = [];\n for (let i=0; i} path Input path\n * @return {!Array} Array of path parts\n * @suppress {checkTypes}\n */\nexport function split(path) {\n if (Array.isArray(path)) {\n return normalize(path).split('.');\n }\n return path.toString().split('.');\n}\n\n/**\n * Reads a value from a path. If any sub-property in the path is `undefined`,\n * this method returns `undefined` (will never throw.\n *\n * @param {Object} root Object from which to dereference path from\n * @param {string | !Array} path Path to read\n * @param {Object=} info If an object is provided to `info`, the normalized\n * (flattened) path will be set to `info.path`.\n * @return {*} Value at path, or `undefined` if the path could not be\n * fully dereferenced.\n */\nexport function get(root, path, info) {\n let prop = root;\n let parts = split(path);\n // Loop over path parts[0..n-1] and dereference\n for (let i=0; i} path Path to set\n * @param {*} value Value to set to path\n * @return {string | undefined} The normalized version of the input path\n */\nexport function set(root, path, value) {\n let prop = root;\n let parts = split(path);\n let last = parts[parts.length-1];\n if (parts.length > 1) {\n // Loop over path parts[0..n-2] and dereference\n for (let i=0; i m[1].toUpperCase()\n )\n );\n}\n\n/**\n * Converts \"camelCase\" identifier (e.g. `fooBarBaz`) to \"dash-case\"\n * (e.g. `foo-bar-baz`).\n *\n * @param {string} camel Camel-case identifier\n * @return {string} Dash-case representation of the identifier\n */\nexport function camelToDashCase(camel) {\n return caseMap[camel] || (\n caseMap[camel] = camel.replace(CAMEL_TO_DASH, '-$1').toLowerCase()\n );\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * @fileoverview\n *\n * Module for adding listeners to a node for the following normalized\n * cross-platform \"gesture\" events:\n * - `down` - mouse or touch went down\n * - `up` - mouse or touch went up\n * - `tap` - mouse click or finger tap\n * - `track` - mouse drag or touch move\n *\n * @summary Module for adding cross-platform gesture event listeners.\n */\n\nimport './boot.js';\n\nimport { timeOut, microTask } from './async.js';\nimport { Debouncer } from './debounce.js';\nimport { passiveTouchGestures } from './settings.js';\n\n// detect native touch action support\nlet HAS_NATIVE_TA = typeof document.head.style.touchAction === 'string';\nlet GESTURE_KEY = '__polymerGestures';\nlet HANDLED_OBJ = '__polymerGesturesHandled';\nlet TOUCH_ACTION = '__polymerGesturesTouchAction';\n// radius for tap and track\nlet TAP_DISTANCE = 25;\nlet TRACK_DISTANCE = 5;\n// number of last N track positions to keep\nlet TRACK_LENGTH = 2;\n\n// Disabling \"mouse\" handlers for 2500ms is enough\nlet MOUSE_TIMEOUT = 2500;\nlet MOUSE_EVENTS = ['mousedown', 'mousemove', 'mouseup', 'click'];\n// an array of bitmask values for mapping MouseEvent.which to MouseEvent.buttons\nlet MOUSE_WHICH_TO_BUTTONS = [0, 1, 4, 2];\nlet MOUSE_HAS_BUTTONS = (function() {\n try {\n return new MouseEvent('test', {buttons: 1}).buttons === 1;\n } catch (e) {\n return false;\n }\n})();\n\n/**\n * @param {string} name Possible mouse event name\n * @return {boolean} true if mouse event, false if not\n */\nfunction isMouseEvent(name) {\n return MOUSE_EVENTS.indexOf(name) > -1;\n}\n\n/* eslint no-empty: [\"error\", { \"allowEmptyCatch\": true }] */\n// check for passive event listeners\nlet SUPPORTS_PASSIVE = false;\n(function() {\n try {\n let opts = Object.defineProperty({}, 'passive', {get() {SUPPORTS_PASSIVE = true;}});\n window.addEventListener('test', null, opts);\n window.removeEventListener('test', null, opts);\n } catch(e) {}\n})();\n\n/**\n * Generate settings for event listeners, dependant on `passiveTouchGestures`\n *\n * @param {string} eventName Event name to determine if `{passive}` option is\n * needed\n * @return {{passive: boolean} | undefined} Options to use for addEventListener\n * and removeEventListener\n */\nfunction PASSIVE_TOUCH(eventName) {\n if (isMouseEvent(eventName) || eventName === 'touchend') {\n return;\n }\n if (HAS_NATIVE_TA && SUPPORTS_PASSIVE && passiveTouchGestures) {\n return {passive: true};\n } else {\n return;\n }\n}\n\n// Check for touch-only devices\nlet IS_TOUCH_ONLY = navigator.userAgent.match(/iP(?:[oa]d|hone)|Android/);\n\n// keep track of any labels hit by the mouseCanceller\n/** @type {!Array} */\nconst clickedLabels = [];\n\n/** @type {!Object} */\nconst labellable = {\n 'button': true,\n 'input': true,\n 'keygen': true,\n 'meter': true,\n 'output': true,\n 'textarea': true,\n 'progress': true,\n 'select': true\n};\n\n// Defined at https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#enabling-and-disabling-form-controls:-the-disabled-attribute\n/** @type {!Object} */\nconst canBeDisabled = {\n 'button': true,\n 'command': true,\n 'fieldset': true,\n 'input': true,\n 'keygen': true,\n 'optgroup': true,\n 'option': true,\n 'select': true,\n 'textarea': true\n};\n\n/**\n * @param {HTMLElement} el Element to check labelling status\n * @return {boolean} element can have labels\n */\nfunction canBeLabelled(el) {\n return labellable[el.localName] || false;\n}\n\n/**\n * @param {HTMLElement} el Element that may be labelled.\n * @return {!Array} Relevant label for `el`\n */\nfunction matchingLabels(el) {\n let labels = Array.prototype.slice.call(/** @type {HTMLInputElement} */(el).labels || []);\n // IE doesn't have `labels` and Safari doesn't populate `labels`\n // if element is in a shadowroot.\n // In this instance, finding the non-ancestor labels is enough,\n // as the mouseCancellor code will handle ancstor labels\n if (!labels.length) {\n labels = [];\n let root = el.getRootNode();\n // if there is an id on `el`, check for all labels with a matching `for` attribute\n if (el.id) {\n let matching = root.querySelectorAll(`label[for = ${el.id}]`);\n for (let i = 0; i < matching.length; i++) {\n labels.push(/** @type {!HTMLLabelElement} */(matching[i]));\n }\n }\n }\n return labels;\n}\n\n// touch will make synthetic mouse events\n// `preventDefault` on touchend will cancel them,\n// but this breaks `` focus and link clicks\n// disable mouse handlers for MOUSE_TIMEOUT ms after\n// a touchend to ignore synthetic mouse events\nlet mouseCanceller = function(mouseEvent) {\n // Check for sourceCapabilities, used to distinguish synthetic events\n // if mouseEvent did not come from a device that fires touch events,\n // it was made by a real mouse and should be counted\n // http://wicg.github.io/InputDeviceCapabilities/#dom-inputdevicecapabilities-firestouchevents\n let sc = mouseEvent.sourceCapabilities;\n if (sc && !sc.firesTouchEvents) {\n return;\n }\n // skip synthetic mouse events\n mouseEvent[HANDLED_OBJ] = {skip: true};\n // disable \"ghost clicks\"\n if (mouseEvent.type === 'click') {\n let clickFromLabel = false;\n let path = mouseEvent.composedPath && mouseEvent.composedPath();\n if (path) {\n for (let i = 0; i < path.length; i++) {\n if (path[i].nodeType === Node.ELEMENT_NODE) {\n if (path[i].localName === 'label') {\n clickedLabels.push(path[i]);\n } else if (canBeLabelled(path[i])) {\n let ownerLabels = matchingLabels(path[i]);\n // check if one of the clicked labels is labelling this element\n for (let j = 0; j < ownerLabels.length; j++) {\n clickFromLabel = clickFromLabel || clickedLabels.indexOf(ownerLabels[j]) > -1;\n }\n }\n }\n if (path[i] === POINTERSTATE.mouse.target) {\n return;\n }\n }\n }\n // if one of the clicked labels was labelling the target element,\n // this is not a ghost click\n if (clickFromLabel) {\n return;\n }\n mouseEvent.preventDefault();\n mouseEvent.stopPropagation();\n }\n};\n\n/**\n * @param {boolean=} setup True to add, false to remove.\n * @return {void}\n */\nfunction setupTeardownMouseCanceller(setup) {\n let events = IS_TOUCH_ONLY ? ['click'] : MOUSE_EVENTS;\n for (let i = 0, en; i < events.length; i++) {\n en = events[i];\n if (setup) {\n // reset clickLabels array\n clickedLabels.length = 0;\n document.addEventListener(en, mouseCanceller, true);\n } else {\n document.removeEventListener(en, mouseCanceller, true);\n }\n }\n}\n\nfunction ignoreMouse(e) {\n if (!POINTERSTATE.mouse.mouseIgnoreJob) {\n setupTeardownMouseCanceller(true);\n }\n let unset = function() {\n setupTeardownMouseCanceller();\n POINTERSTATE.mouse.target = null;\n POINTERSTATE.mouse.mouseIgnoreJob = null;\n };\n POINTERSTATE.mouse.target = e.composedPath()[0];\n POINTERSTATE.mouse.mouseIgnoreJob = Debouncer.debounce(\n POINTERSTATE.mouse.mouseIgnoreJob\n , timeOut.after(MOUSE_TIMEOUT)\n , unset);\n}\n\n/**\n * @param {MouseEvent} ev event to test for left mouse button down\n * @return {boolean} has left mouse button down\n */\nfunction hasLeftMouseButton(ev) {\n let type = ev.type;\n // exit early if the event is not a mouse event\n if (!isMouseEvent(type)) {\n return false;\n }\n // ev.button is not reliable for mousemove (0 is overloaded as both left button and no buttons)\n // instead we use ev.buttons (bitmask of buttons) or fall back to ev.which (deprecated, 0 for no buttons, 1 for left button)\n if (type === 'mousemove') {\n // allow undefined for testing events\n let buttons = ev.buttons === undefined ? 1 : ev.buttons;\n if ((ev instanceof window.MouseEvent) && !MOUSE_HAS_BUTTONS) {\n buttons = MOUSE_WHICH_TO_BUTTONS[ev.which] || 0;\n }\n // buttons is a bitmask, check that the left button bit is set (1)\n return Boolean(buttons & 1);\n } else {\n // allow undefined for testing events\n let button = ev.button === undefined ? 0 : ev.button;\n // ev.button is 0 in mousedown/mouseup/click for left button activation\n return button === 0;\n }\n}\n\nfunction isSyntheticClick(ev) {\n if (ev.type === 'click') {\n // ev.detail is 0 for HTMLElement.click in most browsers\n if (ev.detail === 0) {\n return true;\n }\n // in the worst case, check that the x/y position of the click is within\n // the bounding box of the target of the event\n // Thanks IE 10 >:(\n let t = _findOriginalTarget(ev);\n // make sure the target of the event is an element so we can use getBoundingClientRect,\n // if not, just assume it is a synthetic click\n if (!t.nodeType || /** @type {Element} */(t).nodeType !== Node.ELEMENT_NODE) {\n return true;\n }\n let bcr = /** @type {Element} */(t).getBoundingClientRect();\n // use page x/y to account for scrolling\n let x = ev.pageX, y = ev.pageY;\n // ev is a synthetic click if the position is outside the bounding box of the target\n return !((x >= bcr.left && x <= bcr.right) && (y >= bcr.top && y <= bcr.bottom));\n }\n return false;\n}\n\nlet POINTERSTATE = {\n mouse: {\n target: null,\n mouseIgnoreJob: null\n },\n touch: {\n x: 0,\n y: 0,\n id: -1,\n scrollDecided: false\n }\n};\n\nfunction firstTouchAction(ev) {\n let ta = 'auto';\n let path = ev.composedPath && ev.composedPath();\n if (path) {\n for (let i = 0, n; i < path.length; i++) {\n n = path[i];\n if (n[TOUCH_ACTION]) {\n ta = n[TOUCH_ACTION];\n break;\n }\n }\n }\n return ta;\n}\n\nfunction trackDocument(stateObj, movefn, upfn) {\n stateObj.movefn = movefn;\n stateObj.upfn = upfn;\n document.addEventListener('mousemove', movefn);\n document.addEventListener('mouseup', upfn);\n}\n\nfunction untrackDocument(stateObj) {\n document.removeEventListener('mousemove', stateObj.movefn);\n document.removeEventListener('mouseup', stateObj.upfn);\n stateObj.movefn = null;\n stateObj.upfn = null;\n}\n\n// use a document-wide touchend listener to start the ghost-click prevention mechanism\n// Use passive event listeners, if supported, to not affect scrolling performance\ndocument.addEventListener('touchend', ignoreMouse, SUPPORTS_PASSIVE ? {passive: true} : false);\n\n/** @type {!Object} */\nexport const gestures = {};\n\n/** @type {!Array} */\nexport const recognizers = [];\n\n/**\n * Finds the element rendered on the screen at the provided coordinates.\n *\n * Similar to `document.elementFromPoint`, but pierces through\n * shadow roots.\n *\n * @param {number} x Horizontal pixel coordinate\n * @param {number} y Vertical pixel coordinate\n * @return {Element} Returns the deepest shadowRoot inclusive element\n * found at the screen position given.\n */\nexport function deepTargetFind(x, y) {\n let node = document.elementFromPoint(x, y);\n let next = node;\n // this code path is only taken when native ShadowDOM is used\n // if there is a shadowroot, it may have a node at x/y\n // if there is not a shadowroot, exit the loop\n while (next && next.shadowRoot && !window.ShadyDOM) {\n // if there is a node at x/y in the shadowroot, look deeper\n let oldNext = next;\n next = next.shadowRoot.elementFromPoint(x, y);\n // on Safari, elementFromPoint may return the shadowRoot host\n if (oldNext === next) {\n break;\n }\n if (next) {\n node = next;\n }\n }\n return node;\n}\n\n/**\n * a cheaper check than ev.composedPath()[0];\n *\n * @private\n * @param {Event|Touch} ev Event.\n * @return {EventTarget} Returns the event target.\n */\nfunction _findOriginalTarget(ev) {\n // shadowdom\n if (ev.composedPath) {\n const targets = /** @type {!Array} */(ev.composedPath());\n // It shouldn't be, but sometimes targets is empty (window on Safari).\n return targets.length > 0 ? targets[0] : ev.target;\n }\n // shadydom\n return ev.target;\n}\n\n/**\n * @private\n * @param {Event} ev Event.\n * @return {void}\n */\nfunction _handleNative(ev) {\n let handled;\n let type = ev.type;\n let node = ev.currentTarget;\n let gobj = node[GESTURE_KEY];\n if (!gobj) {\n return;\n }\n let gs = gobj[type];\n if (!gs) {\n return;\n }\n if (!ev[HANDLED_OBJ]) {\n ev[HANDLED_OBJ] = {};\n if (type.slice(0, 5) === 'touch') {\n ev = /** @type {TouchEvent} */(ev); // eslint-disable-line no-self-assign\n let t = ev.changedTouches[0];\n if (type === 'touchstart') {\n // only handle the first finger\n if (ev.touches.length === 1) {\n POINTERSTATE.touch.id = t.identifier;\n }\n }\n if (POINTERSTATE.touch.id !== t.identifier) {\n return;\n }\n if (!HAS_NATIVE_TA) {\n if (type === 'touchstart' || type === 'touchmove') {\n _handleTouchAction(ev);\n }\n }\n }\n }\n handled = ev[HANDLED_OBJ];\n // used to ignore synthetic mouse events\n if (handled.skip) {\n return;\n }\n // reset recognizer state\n for (let i = 0, r; i < recognizers.length; i++) {\n r = recognizers[i];\n if (gs[r.name] && !handled[r.name]) {\n if (r.flow && r.flow.start.indexOf(ev.type) > -1 && r.reset) {\n r.reset();\n }\n }\n }\n // enforce gesture recognizer order\n for (let i = 0, r; i < recognizers.length; i++) {\n r = recognizers[i];\n if (gs[r.name] && !handled[r.name]) {\n handled[r.name] = true;\n r[type](ev);\n }\n }\n}\n\n/**\n * @private\n * @param {TouchEvent} ev Event.\n * @return {void}\n */\nfunction _handleTouchAction(ev) {\n let t = ev.changedTouches[0];\n let type = ev.type;\n if (type === 'touchstart') {\n POINTERSTATE.touch.x = t.clientX;\n POINTERSTATE.touch.y = t.clientY;\n POINTERSTATE.touch.scrollDecided = false;\n } else if (type === 'touchmove') {\n if (POINTERSTATE.touch.scrollDecided) {\n return;\n }\n POINTERSTATE.touch.scrollDecided = true;\n let ta = firstTouchAction(ev);\n let shouldPrevent = false;\n let dx = Math.abs(POINTERSTATE.touch.x - t.clientX);\n let dy = Math.abs(POINTERSTATE.touch.y - t.clientY);\n if (!ev.cancelable) {\n // scrolling is happening\n } else if (ta === 'none') {\n shouldPrevent = true;\n } else if (ta === 'pan-x') {\n shouldPrevent = dy > dx;\n } else if (ta === 'pan-y') {\n shouldPrevent = dx > dy;\n }\n if (shouldPrevent) {\n ev.preventDefault();\n } else {\n prevent('track');\n }\n }\n}\n\n/**\n * Adds an event listener to a node for the given gesture type.\n *\n * @param {!EventTarget} node Node to add listener on\n * @param {string} evType Gesture type: `down`, `up`, `track`, or `tap`\n * @param {!function(!Event):void} handler Event listener function to call\n * @return {boolean} Returns true if a gesture event listener was added.\n */\nexport function addListener(node, evType, handler) {\n if (gestures[evType]) {\n _add(node, evType, handler);\n return true;\n }\n return false;\n}\n\n/**\n * Removes an event listener from a node for the given gesture type.\n *\n * @param {!EventTarget} node Node to remove listener from\n * @param {string} evType Gesture type: `down`, `up`, `track`, or `tap`\n * @param {!function(!Event):void} handler Event listener function previously passed to\n * `addListener`.\n * @return {boolean} Returns true if a gesture event listener was removed.\n */\nexport function removeListener(node, evType, handler) {\n if (gestures[evType]) {\n _remove(node, evType, handler);\n return true;\n }\n return false;\n}\n\n/**\n * automate the event listeners for the native events\n *\n * @private\n * @param {!EventTarget} node Node on which to add the event.\n * @param {string} evType Event type to add.\n * @param {function(!Event)} handler Event handler function.\n * @return {void}\n */\nfunction _add(node, evType, handler) {\n let recognizer = gestures[evType];\n let deps = recognizer.deps;\n let name = recognizer.name;\n let gobj = node[GESTURE_KEY];\n if (!gobj) {\n node[GESTURE_KEY] = gobj = {};\n }\n for (let i = 0, dep, gd; i < deps.length; i++) {\n dep = deps[i];\n // don't add mouse handlers on iOS because they cause gray selection overlays\n if (IS_TOUCH_ONLY && isMouseEvent(dep) && dep !== 'click') {\n continue;\n }\n gd = gobj[dep];\n if (!gd) {\n gobj[dep] = gd = {_count: 0};\n }\n if (gd._count === 0) {\n node.addEventListener(dep, _handleNative, PASSIVE_TOUCH(dep));\n }\n gd[name] = (gd[name] || 0) + 1;\n gd._count = (gd._count || 0) + 1;\n }\n node.addEventListener(evType, handler);\n if (recognizer.touchAction) {\n setTouchAction(node, recognizer.touchAction);\n }\n}\n\n/**\n * automate event listener removal for native events\n *\n * @private\n * @param {!EventTarget} node Node on which to remove the event.\n * @param {string} evType Event type to remove.\n * @param {function(!Event): void} handler Event handler function.\n * @return {void}\n */\nfunction _remove(node, evType, handler) {\n let recognizer = gestures[evType];\n let deps = recognizer.deps;\n let name = recognizer.name;\n let gobj = node[GESTURE_KEY];\n if (gobj) {\n for (let i = 0, dep, gd; i < deps.length; i++) {\n dep = deps[i];\n gd = gobj[dep];\n if (gd && gd[name]) {\n gd[name] = (gd[name] || 1) - 1;\n gd._count = (gd._count || 1) - 1;\n if (gd._count === 0) {\n node.removeEventListener(dep, _handleNative, PASSIVE_TOUCH(dep));\n }\n }\n }\n }\n node.removeEventListener(evType, handler);\n}\n\n/**\n * Registers a new gesture event recognizer for adding new custom\n * gesture event types.\n *\n * @param {!GestureRecognizer} recog Gesture recognizer descriptor\n * @return {void}\n */\nexport function register(recog) {\n recognizers.push(recog);\n for (let i = 0; i < recog.emits.length; i++) {\n gestures[recog.emits[i]] = recog;\n }\n}\n\n/**\n * @private\n * @param {string} evName Event name.\n * @return {Object} Returns the gesture for the given event name.\n */\nfunction _findRecognizerByEvent(evName) {\n for (let i = 0, r; i < recognizers.length; i++) {\n r = recognizers[i];\n for (let j = 0, n; j < r.emits.length; j++) {\n n = r.emits[j];\n if (n === evName) {\n return r;\n }\n }\n }\n return null;\n}\n\n/**\n * Sets scrolling direction on node.\n *\n * This value is checked on first move, thus it should be called prior to\n * adding event listeners.\n *\n * @param {!EventTarget} node Node to set touch action setting on\n * @param {string} value Touch action value\n * @return {void}\n */\nexport function setTouchAction(node, value) {\n if (HAS_NATIVE_TA && node instanceof HTMLElement) {\n // NOTE: add touchAction async so that events can be added in\n // custom element constructors. Otherwise we run afoul of custom\n // elements restriction against settings attributes (style) in the\n // constructor.\n microTask.run(() => {\n node.style.touchAction = value;\n });\n }\n node[TOUCH_ACTION] = value;\n}\n\n/**\n * Dispatches an event on the `target` element of `type` with the given\n * `detail`.\n * @private\n * @param {!EventTarget} target The element on which to fire an event.\n * @param {string} type The type of event to fire.\n * @param {!Object=} detail The detail object to populate on the event.\n * @return {void}\n */\nfunction _fire(target, type, detail) {\n let ev = new Event(type, { bubbles: true, cancelable: true, composed: true });\n ev.detail = detail;\n target.dispatchEvent(ev);\n // forward `preventDefault` in a clean way\n if (ev.defaultPrevented) {\n let preventer = detail.preventer || detail.sourceEvent;\n if (preventer && preventer.preventDefault) {\n preventer.preventDefault();\n }\n }\n}\n\n/**\n * Prevents the dispatch and default action of the given event name.\n *\n * @param {string} evName Event name.\n * @return {void}\n */\nexport function prevent(evName) {\n let recognizer = _findRecognizerByEvent(evName);\n if (recognizer.info) {\n recognizer.info.prevent = true;\n }\n}\n\n/**\n * Reset the 2500ms timeout on processing mouse input after detecting touch input.\n *\n * Touch inputs create synthesized mouse inputs anywhere from 0 to 2000ms after the touch.\n * This method should only be called during testing with simulated touch inputs.\n * Calling this method in production may cause duplicate taps or other Gestures.\n *\n * @return {void}\n */\nexport function resetMouseCanceller() {\n if (POINTERSTATE.mouse.mouseIgnoreJob) {\n POINTERSTATE.mouse.mouseIgnoreJob.flush();\n }\n}\n\n/* eslint-disable valid-jsdoc */\n\nregister({\n name: 'downup',\n deps: ['mousedown', 'touchstart', 'touchend'],\n flow: {\n start: ['mousedown', 'touchstart'],\n end: ['mouseup', 'touchend']\n },\n emits: ['down', 'up'],\n\n info: {\n movefn: null,\n upfn: null\n },\n\n /**\n * @this {GestureRecognizer}\n * @return {void}\n */\n reset: function() {\n untrackDocument(this.info);\n },\n\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n mousedown: function(e) {\n if (!hasLeftMouseButton(e)) {\n return;\n }\n let t = _findOriginalTarget(e);\n let self = this;\n let movefn = function movefn(e) {\n if (!hasLeftMouseButton(e)) {\n downupFire('up', t, e);\n untrackDocument(self.info);\n }\n };\n let upfn = function upfn(e) {\n if (hasLeftMouseButton(e)) {\n downupFire('up', t, e);\n }\n untrackDocument(self.info);\n };\n trackDocument(this.info, movefn, upfn);\n downupFire('down', t, e);\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchstart: function(e) {\n downupFire('down', _findOriginalTarget(e), e.changedTouches[0], e);\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchend: function(e) {\n downupFire('up', _findOriginalTarget(e), e.changedTouches[0], e);\n }\n});\n\n/**\n * @param {string} type\n * @param {EventTarget} target\n * @param {Event|Touch} event\n * @param {Event=} preventer\n * @return {void}\n */\nfunction downupFire(type, target, event, preventer) {\n if (!target) {\n return;\n }\n _fire(target, type, {\n x: event.clientX,\n y: event.clientY,\n sourceEvent: event,\n preventer: preventer,\n prevent: function(e) {\n return prevent(e);\n }\n });\n}\n\nregister({\n name: 'track',\n touchAction: 'none',\n deps: ['mousedown', 'touchstart', 'touchmove', 'touchend'],\n flow: {\n start: ['mousedown', 'touchstart'],\n end: ['mouseup', 'touchend']\n },\n emits: ['track'],\n\n info: {\n x: 0,\n y: 0,\n state: 'start',\n started: false,\n moves: [],\n /** @this {GestureInfo} */\n addMove: function(move) {\n if (this.moves.length > TRACK_LENGTH) {\n this.moves.shift();\n }\n this.moves.push(move);\n },\n movefn: null,\n upfn: null,\n prevent: false\n },\n\n /**\n * @this {GestureRecognizer}\n * @return {void}\n */\n reset: function() {\n this.info.state = 'start';\n this.info.started = false;\n this.info.moves = [];\n this.info.x = 0;\n this.info.y = 0;\n this.info.prevent = false;\n untrackDocument(this.info);\n },\n\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n mousedown: function(e) {\n if (!hasLeftMouseButton(e)) {\n return;\n }\n let t = _findOriginalTarget(e);\n let self = this;\n let movefn = function movefn(e) {\n let x = e.clientX, y = e.clientY;\n if (trackHasMovedEnough(self.info, x, y)) {\n // first move is 'start', subsequent moves are 'move', mouseup is 'end'\n self.info.state = self.info.started ? (e.type === 'mouseup' ? 'end' : 'track') : 'start';\n if (self.info.state === 'start') {\n // if and only if tracking, always prevent tap\n prevent('tap');\n }\n self.info.addMove({x: x, y: y});\n if (!hasLeftMouseButton(e)) {\n // always fire \"end\"\n self.info.state = 'end';\n untrackDocument(self.info);\n }\n if (t) {\n trackFire(self.info, t, e);\n }\n self.info.started = true;\n }\n };\n let upfn = function upfn(e) {\n if (self.info.started) {\n movefn(e);\n }\n\n // remove the temporary listeners\n untrackDocument(self.info);\n };\n // add temporary document listeners as mouse retargets\n trackDocument(this.info, movefn, upfn);\n this.info.x = e.clientX;\n this.info.y = e.clientY;\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchstart: function(e) {\n let ct = e.changedTouches[0];\n this.info.x = ct.clientX;\n this.info.y = ct.clientY;\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchmove: function(e) {\n let t = _findOriginalTarget(e);\n let ct = e.changedTouches[0];\n let x = ct.clientX, y = ct.clientY;\n if (trackHasMovedEnough(this.info, x, y)) {\n if (this.info.state === 'start') {\n // if and only if tracking, always prevent tap\n prevent('tap');\n }\n this.info.addMove({x: x, y: y});\n trackFire(this.info, t, ct);\n this.info.state = 'track';\n this.info.started = true;\n }\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchend: function(e) {\n let t = _findOriginalTarget(e);\n let ct = e.changedTouches[0];\n // only trackend if track was started and not aborted\n if (this.info.started) {\n // reset started state on up\n this.info.state = 'end';\n this.info.addMove({x: ct.clientX, y: ct.clientY});\n trackFire(this.info, t, ct);\n }\n }\n});\n\n/**\n * @param {!GestureInfo} info\n * @param {number} x\n * @param {number} y\n * @return {boolean}\n */\nfunction trackHasMovedEnough(info, x, y) {\n if (info.prevent) {\n return false;\n }\n if (info.started) {\n return true;\n }\n let dx = Math.abs(info.x - x);\n let dy = Math.abs(info.y - y);\n return (dx >= TRACK_DISTANCE || dy >= TRACK_DISTANCE);\n}\n\n/**\n * @param {!GestureInfo} info\n * @param {?EventTarget} target\n * @param {Touch} touch\n * @return {void}\n */\nfunction trackFire(info, target, touch) {\n if (!target) {\n return;\n }\n let secondlast = info.moves[info.moves.length - 2];\n let lastmove = info.moves[info.moves.length - 1];\n let dx = lastmove.x - info.x;\n let dy = lastmove.y - info.y;\n let ddx, ddy = 0;\n if (secondlast) {\n ddx = lastmove.x - secondlast.x;\n ddy = lastmove.y - secondlast.y;\n }\n _fire(target, 'track', {\n state: info.state,\n x: touch.clientX,\n y: touch.clientY,\n dx: dx,\n dy: dy,\n ddx: ddx,\n ddy: ddy,\n sourceEvent: touch,\n hover: function() {\n return deepTargetFind(touch.clientX, touch.clientY);\n }\n });\n}\n\nregister({\n name: 'tap',\n deps: ['mousedown', 'click', 'touchstart', 'touchend'],\n flow: {\n start: ['mousedown', 'touchstart'],\n end: ['click', 'touchend']\n },\n emits: ['tap'],\n info: {\n x: NaN,\n y: NaN,\n prevent: false\n },\n /**\n * @this {GestureRecognizer}\n * @return {void}\n */\n reset: function() {\n this.info.x = NaN;\n this.info.y = NaN;\n this.info.prevent = false;\n },\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n mousedown: function(e) {\n if (hasLeftMouseButton(e)) {\n this.info.x = e.clientX;\n this.info.y = e.clientY;\n }\n },\n /**\n * @this {GestureRecognizer}\n * @param {MouseEvent} e\n * @return {void}\n */\n click: function(e) {\n if (hasLeftMouseButton(e)) {\n trackForward(this.info, e);\n }\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchstart: function(e) {\n const touch = e.changedTouches[0];\n this.info.x = touch.clientX;\n this.info.y = touch.clientY;\n },\n /**\n * @this {GestureRecognizer}\n * @param {TouchEvent} e\n * @return {void}\n */\n touchend: function(e) {\n trackForward(this.info, e.changedTouches[0], e);\n }\n});\n\n/**\n * @param {!GestureInfo} info\n * @param {Event | Touch} e\n * @param {Event=} preventer\n * @return {void}\n */\nfunction trackForward(info, e, preventer) {\n let dx = Math.abs(e.clientX - info.x);\n let dy = Math.abs(e.clientY - info.y);\n // find original target from `preventer` for TouchEvents, or `e` for MouseEvents\n let t = _findOriginalTarget((preventer || e));\n if (!t || (canBeDisabled[/** @type {!HTMLElement} */(t).localName] && t.hasAttribute('disabled'))) {\n return;\n }\n // dx,dy can be NaN if `click` has been simulated and there was no `down` for `start`\n if (isNaN(dx) || isNaN(dy) || (dx <= TAP_DISTANCE && dy <= TAP_DISTANCE) || isSyntheticClick(e)) {\n // prevent taps from being generated if an event has canceled them\n if (!info.prevent) {\n _fire(t, 'tap', {\n x: e.clientX,\n y: e.clientY,\n sourceEvent: e,\n preventer: preventer\n });\n }\n }\n}\n\n/* eslint-enable valid-jsdoc */\n\n/** @deprecated */\nexport const findOriginalTarget = _findOriginalTarget;\n\n/** @deprecated */\nexport const add = addListener;\n\n/** @deprecated */\nexport const remove = removeListener;\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nimport { LegacyElementMixin } from './legacy-element-mixin.js';\n\nlet metaProps = {\n attached: true,\n detached: true,\n ready: true,\n created: true,\n beforeRegister: true,\n registered: true,\n attributeChanged: true,\n // meta objects\n behaviors: true\n};\n\n/**\n * Applies a \"legacy\" behavior or array of behaviors to the provided class.\n *\n * Note: this method will automatically also apply the `LegacyElementMixin`\n * to ensure that any legacy behaviors can rely on legacy Polymer API on\n * the underlying element.\n *\n * @function\n * @template T\n * @param {!Object|!Array} behaviors Behavior object or array of behaviors.\n * @param {function(new:T)} klass Element class.\n * @return {?} Returns a new Element class extended by the\n * passed in `behaviors` and also by `LegacyElementMixin`.\n * @suppress {invalidCasts, checkTypes}\n */\nexport function mixinBehaviors(behaviors, klass) {\n if (!behaviors) {\n klass = /** @type {HTMLElement} */(klass); // eslint-disable-line no-self-assign\n return klass;\n }\n // NOTE: ensure the behavior is extending a class with\n // legacy element api. This is necessary since behaviors expect to be able\n // to access 1.x legacy api.\n klass = LegacyElementMixin(klass);\n if (!Array.isArray(behaviors)) {\n behaviors = [behaviors];\n }\n let superBehaviors = klass.prototype.behaviors;\n // get flattened, deduped list of behaviors *not* already on super class\n behaviors = flattenBehaviors(behaviors, null, superBehaviors);\n // mixin new behaviors\n klass = _mixinBehaviors(behaviors, klass);\n if (superBehaviors) {\n behaviors = superBehaviors.concat(behaviors);\n }\n // Set behaviors on prototype for BC...\n klass.prototype.behaviors = behaviors;\n return klass;\n}\n\n// NOTE:\n// 1.x\n// Behaviors were mixed in *in reverse order* and de-duped on the fly.\n// The rule was that behavior properties were copied onto the element\n// prototype if and only if the property did not already exist.\n// Given: Polymer{ behaviors: [A, B, C, A, B]}, property copy order was:\n// (1), B, (2), A, (3) C. This means prototype properties win over\n// B properties win over A win over C. This mirrors what would happen\n// with inheritance if element extended B extended A extended C.\n//\n// Again given, Polymer{ behaviors: [A, B, C, A, B]}, the resulting\n// `behaviors` array was [C, A, B].\n// Behavior lifecycle methods were called in behavior array order\n// followed by the element, e.g. (1) C.created, (2) A.created,\n// (3) B.created, (4) element.created. There was no support for\n// super, and \"super-behavior\" methods were callable only by name).\n//\n// 2.x\n// Behaviors are made into proper mixins which live in the\n// element's prototype chain. Behaviors are placed in the element prototype\n// eldest to youngest and de-duped youngest to oldest:\n// So, first [A, B, C, A, B] becomes [C, A, B] then,\n// the element prototype becomes (oldest) (1) PolymerElement, (2) class(C),\n// (3) class(A), (4) class(B), (5) class(Polymer({...})).\n// Result:\n// This means element properties win over B properties win over A win\n// over C. (same as 1.x)\n// If lifecycle is called (super then me), order is\n// (1) C.created, (2) A.created, (3) B.created, (4) element.created\n// (again same as 1.x)\nfunction _mixinBehaviors(behaviors, klass) {\n for (let i=0; i= 0; i--) {\n let b = behaviors[i];\n if (b) {\n if (Array.isArray(b)) {\n flattenBehaviors(b, list);\n } else {\n // dedup\n if (list.indexOf(b) < 0 && (!exclude || exclude.indexOf(b) < 0)) {\n list.unshift(b);\n }\n }\n } else {\n console.warn('behavior is null, check for missing or 404 import');\n }\n }\n return list;\n}\n\n/**\n * @param {!PolymerInit} info Polymer info object\n * @param {function(new:HTMLElement)} Base base class to extend with info object\n * @return {function(new:HTMLElement)} Generated class\n * @suppress {checkTypes}\n * @private\n */\nfunction GenerateClassFromInfo(info, Base) {\n\n /** @private */\n class PolymerGenerated extends Base {\n\n static get properties() {\n return info.properties;\n }\n\n static get observers() {\n return info.observers;\n }\n\n /**\n * @return {void}\n */\n created() {\n super.created();\n if (info.created) {\n info.created.call(this);\n }\n }\n\n /**\n * @return {void}\n */\n _registered() {\n super._registered();\n /* NOTE: `beforeRegister` is called here for bc, but the behavior\n is different than in 1.x. In 1.0, the method was called *after*\n mixing prototypes together but *before* processing of meta-objects.\n However, dynamic effects can still be set here and can be done either\n in `beforeRegister` or `registered`. It is no longer possible to set\n `is` in `beforeRegister` as you could in 1.x.\n */\n if (info.beforeRegister) {\n info.beforeRegister.call(Object.getPrototypeOf(this));\n }\n if (info.registered) {\n info.registered.call(Object.getPrototypeOf(this));\n }\n }\n\n /**\n * @return {void}\n */\n _applyListeners() {\n super._applyListeners();\n if (info.listeners) {\n for (let l in info.listeners) {\n this._addMethodEventListenerToNode(this, l, info.listeners[l]);\n }\n }\n }\n\n // note: exception to \"super then me\" rule;\n // do work before calling super so that super attributes\n // only apply if not already set.\n /**\n * @return {void}\n */\n _ensureAttributes() {\n if (info.hostAttributes) {\n for (let a in info.hostAttributes) {\n this._ensureAttribute(a, info.hostAttributes[a]);\n }\n }\n super._ensureAttributes();\n }\n\n /**\n * @return {void}\n */\n ready() {\n super.ready();\n if (info.ready) {\n info.ready.call(this);\n }\n }\n\n /**\n * @return {void}\n */\n attached() {\n super.attached();\n if (info.attached) {\n info.attached.call(this);\n }\n }\n\n /**\n * @return {void}\n */\n detached() {\n super.detached();\n if (info.detached) {\n info.detached.call(this);\n }\n }\n\n /**\n * Implements native Custom Elements `attributeChangedCallback` to\n * set an attribute value to a property via `_attributeToProperty`.\n *\n * @param {string} name Name of attribute that changed\n * @param {?string} old Old attribute value\n * @param {?string} value New attribute value\n * @return {void}\n */\n attributeChanged(name, old, value) {\n super.attributeChanged(name, old, value);\n if (info.attributeChanged) {\n info.attributeChanged.call(this, name, old, value);\n }\n }\n }\n\n PolymerGenerated.generatedFrom = info;\n\n for (let p in info) {\n // NOTE: cannot copy `metaProps` methods onto prototype at least because\n // `super.ready` must be called and is not included in the user fn.\n if (!(p in metaProps)) {\n let pd = Object.getOwnPropertyDescriptor(info, p);\n if (pd) {\n Object.defineProperty(PolymerGenerated.prototype, p, pd);\n }\n }\n }\n\n return PolymerGenerated;\n}\n\n/**\n * Generates a class that extends `LegacyElement` based on the\n * provided info object. Metadata objects on the `info` object\n * (`properties`, `observers`, `listeners`, `behaviors`, `is`) are used\n * for Polymer's meta-programming systems, and any functions are copied\n * to the generated class.\n *\n * Valid \"metadata\" values are as follows:\n *\n * `is`: String providing the tag name to register the element under. In\n * addition, if a `dom-module` with the same id exists, the first template\n * in that `dom-module` will be stamped into the shadow root of this element,\n * with support for declarative event listeners (`on-...`), Polymer data\n * bindings (`[[...]]` and `{{...}}`), and id-based node finding into\n * `this.$`.\n *\n * `properties`: Object describing property-related metadata used by Polymer\n * features (key: property names, value: object containing property metadata).\n * Valid keys in per-property metadata include:\n * - `type` (String|Number|Object|Array|...): Used by\n * `attributeChangedCallback` to determine how string-based attributes\n * are deserialized to JavaScript property values.\n * - `notify` (boolean): Causes a change in the property to fire a\n * non-bubbling event called `-changed`. Elements that have\n * enabled two-way binding to the property use this event to observe changes.\n * - `readOnly` (boolean): Creates a getter for the property, but no setter.\n * To set a read-only property, use the private setter method\n * `_setProperty(property, value)`.\n * - `observer` (string): Observer method name that will be called when\n * the property changes. The arguments of the method are\n * `(value, previousValue)`.\n * - `computed` (string): String describing method and dependent properties\n * for computing the value of this property (e.g. `'computeFoo(bar, zot)'`).\n * Computed properties are read-only by default and can only be changed\n * via the return value of the computing method.\n *\n * `observers`: Array of strings describing multi-property observer methods\n * and their dependent properties (e.g. `'observeABC(a, b, c)'`).\n *\n * `listeners`: Object describing event listeners to be added to each\n * instance of this element (key: event name, value: method name).\n *\n * `behaviors`: Array of additional `info` objects containing metadata\n * and callbacks in the same format as the `info` object here which are\n * merged into this element.\n *\n * `hostAttributes`: Object listing attributes to be applied to the host\n * once created (key: attribute name, value: attribute value). Values\n * are serialized based on the type of the value. Host attributes should\n * generally be limited to attributes such as `tabIndex` and `aria-...`.\n * Attributes in `hostAttributes` are only applied if a user-supplied\n * attribute is not already present (attributes in markup override\n * `hostAttributes`).\n *\n * In addition, the following Polymer-specific callbacks may be provided:\n * - `registered`: called after first instance of this element,\n * - `created`: called during `constructor`\n * - `attached`: called during `connectedCallback`\n * - `detached`: called during `disconnectedCallback`\n * - `ready`: called before first `attached`, after all properties of\n * this element have been propagated to its template and all observers\n * have run\n *\n * @param {!PolymerInit} info Object containing Polymer metadata and functions\n * to become class methods.\n * @template T\n * @param {function(T):T} mixin Optional mixin to apply to legacy base class\n * before extending with Polymer metaprogramming.\n * @return {function(new:HTMLElement)} Generated class\n */\nexport const Class = function(info, mixin) {\n if (!info) {\n console.warn(`Polymer's Class function requires \\`info\\` argument`);\n }\n const baseWithBehaviors = info.behaviors ?\n // note: mixinBehaviors ensures `LegacyElementMixin`.\n mixinBehaviors(info.behaviors, HTMLElement) :\n LegacyElementMixin(HTMLElement);\n const baseWithMixin = mixin ? mixin(baseWithBehaviors) : baseWithBehaviors;\n const klass = GenerateClassFromInfo(info, baseWithMixin);\n // decorate klass with registration info\n klass.is = info.is;\n return klass;\n};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { dedupingMixin } from '../utils/mixin.js';\nimport { PropertiesChanged } from './properties-changed.js';\n\n/**\n * Creates a copy of `props` with each property normalized such that\n * upgraded it is an object with at least a type property { type: Type}.\n *\n * @param {Object} props Properties to normalize\n * @return {Object} Copy of input `props` with normalized properties that\n * are in the form {type: Type}\n * @private\n */\nfunction normalizeProperties(props) {\n const output = {};\n for (let p in props) {\n const o = props[p];\n output[p] = (typeof o === 'function') ? {type: o} : o;\n }\n return output;\n}\n\n/**\n * Mixin that provides a minimal starting point to using the PropertiesChanged\n * mixin by providing a mechanism to declare properties in a static\n * getter (e.g. static get properties() { return { foo: String } }). Changes\n * are reported via the `_propertiesChanged` method.\n *\n * This mixin provides no specific support for rendering. Users are expected\n * to create a ShadowRoot and put content into it and update it in whatever\n * way makes sense. This can be done in reaction to properties changing by\n * implementing `_propertiesChanged`.\n *\n * @mixinFunction\n * @polymer\n * @appliesMixin PropertiesChanged\n * @summary Mixin that provides a minimal starting point for using\n * the PropertiesChanged mixin by providing a declarative `properties` object.\n */\nexport const PropertiesMixin = dedupingMixin(superClass => {\n\n /**\n * @constructor\n * @implements {Polymer_PropertiesChanged}\n * @private\n */\n const base = PropertiesChanged(superClass);\n\n /**\n * Returns the super class constructor for the given class, if it is an\n * instance of the PropertiesMixin.\n *\n * @param {!PropertiesMixinConstructor} constructor PropertiesMixin constructor\n * @return {?PropertiesMixinConstructor} Super class constructor\n */\n function superPropertiesClass(constructor) {\n const superCtor = Object.getPrototypeOf(constructor);\n\n // Note, the `PropertiesMixin` class below only refers to the class\n // generated by this call to the mixin; the instanceof test only works\n // because the mixin is deduped and guaranteed only to apply once, hence\n // all constructors in a proto chain will see the same `PropertiesMixin`\n return (superCtor.prototype instanceof PropertiesMixin) ?\n /** @type {!PropertiesMixinConstructor} */ (superCtor) : null;\n }\n\n /**\n * Returns a memoized version of the `properties` object for the\n * given class. Properties not in object format are converted to at\n * least {type}.\n *\n * @param {PropertiesMixinConstructor} constructor PropertiesMixin constructor\n * @return {Object} Memoized properties object\n */\n function ownProperties(constructor) {\n if (!constructor.hasOwnProperty(JSCompiler_renameProperty('__ownProperties', constructor))) {\n let props = null;\n\n if (constructor.hasOwnProperty(JSCompiler_renameProperty('properties', constructor))) {\n const properties = constructor.properties;\n\n if (properties) {\n props = normalizeProperties(properties);\n }\n }\n\n constructor.__ownProperties = props;\n }\n return constructor.__ownProperties;\n }\n\n /**\n * @polymer\n * @mixinClass\n * @extends {base}\n * @implements {Polymer_PropertiesMixin}\n * @unrestricted\n */\n class PropertiesMixin extends base {\n\n /**\n * Implements standard custom elements getter to observes the attributes\n * listed in `properties`.\n * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do\n */\n static get observedAttributes() {\n const props = this._properties;\n return props ? Object.keys(props).map(p => this.attributeNameForProperty(p)) : [];\n }\n\n /**\n * Finalizes an element definition, including ensuring any super classes\n * are also finalized. This includes ensuring property\n * accessors exist on the element prototype. This method calls\n * `_finalizeClass` to finalize each constructor in the prototype chain.\n * @return {void}\n */\n static finalize() {\n if (!this.hasOwnProperty(JSCompiler_renameProperty('__finalized', this))) {\n const superCtor = superPropertiesClass(/** @type {!PropertiesMixinConstructor} */(this));\n if (superCtor) {\n superCtor.finalize();\n }\n this.__finalized = true;\n this._finalizeClass();\n }\n }\n\n /**\n * Finalize an element class. This includes ensuring property\n * accessors exist on the element prototype. This method is called by\n * `finalize` and finalizes the class constructor.\n *\n * @protected\n */\n static _finalizeClass() {\n const props = ownProperties(/** @type {!PropertiesMixinConstructor} */(this));\n if (props) {\n this.createProperties(props);\n }\n }\n\n /**\n * Returns a memoized version of all properties, including those inherited\n * from super classes. Properties not in object format are converted to\n * at least {type}.\n *\n * @return {Object} Object containing properties for this class\n * @protected\n */\n static get _properties() {\n if (!this.hasOwnProperty(\n JSCompiler_renameProperty('__properties', this))) {\n const superCtor = superPropertiesClass(/** @type {!PropertiesMixinConstructor} */(this));\n this.__properties = Object.assign({},\n superCtor && superCtor._properties,\n ownProperties(/** @type {PropertiesMixinConstructor} */(this)));\n }\n return this.__properties;\n }\n\n /**\n * Overrides `PropertiesChanged` method to return type specified in the\n * static `properties` object for the given property.\n * @param {string} name Name of property\n * @return {*} Type to which to deserialize attribute\n *\n * @protected\n */\n static typeForProperty(name) {\n const info = this._properties[name];\n return info && info.type;\n }\n\n /**\n * Overrides `PropertiesChanged` method and adds a call to\n * `finalize` which lazily configures the element's property accessors.\n * @override\n * @return {void}\n */\n _initializeProperties() {\n this.constructor.finalize();\n super._initializeProperties();\n }\n\n /**\n * Called when the element is added to a document.\n * Calls `_enableProperties` to turn on property system from\n * `PropertiesChanged`.\n * @suppress {missingProperties} Super may or may not implement the callback\n * @return {void}\n * @override\n */\n connectedCallback() {\n if (super.connectedCallback) {\n super.connectedCallback();\n }\n this._enableProperties();\n }\n\n /**\n * Called when the element is removed from a document\n * @suppress {missingProperties} Super may or may not implement the callback\n * @return {void}\n * @override\n */\n disconnectedCallback() {\n if (super.disconnectedCallback) {\n super.disconnectedCallback();\n }\n }\n\n }\n\n return PropertiesMixin;\n\n});\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { rootPath, strictTemplatePolicy, allowTemplateFromDomModule } from '../utils/settings.js';\nimport { dedupingMixin } from '../utils/mixin.js';\nimport { stylesFromTemplate, stylesFromModuleImports } from '../utils/style-gather.js';\nimport { pathFromUrl, resolveCss, resolveUrl } from '../utils/resolve-url.js';\nimport { DomModule } from '../elements/dom-module.js';\nimport { PropertyEffects } from './property-effects.js';\nimport { PropertiesMixin } from './properties-mixin.js';\n\n/**\n * Current Polymer version in Semver notation.\n * @type {string} Semver notation of the current version of Polymer.\n */\nexport const version = '3.0.5';\n\n/**\n * Element class mixin that provides the core API for Polymer's meta-programming\n * features including template stamping, data-binding, attribute deserialization,\n * and property change observation.\n *\n * Subclassers may provide the following static getters to return metadata\n * used to configure Polymer's features for the class:\n *\n * - `static get is()`: When the template is provided via a `dom-module`,\n * users should return the `dom-module` id from a static `is` getter. If\n * no template is needed or the template is provided directly via the\n * `template` getter, there is no need to define `is` for the element.\n *\n * - `static get template()`: Users may provide the template directly (as\n * opposed to via `dom-module`) by implementing a static `template` getter.\n * The getter must return an `HTMLTemplateElement`.\n *\n * - `static get properties()`: Should return an object describing\n * property-related metadata used by Polymer features (key: property name\n * value: object containing property metadata). Valid keys in per-property\n * metadata include:\n * - `type` (String|Number|Object|Array|...): Used by\n * `attributeChangedCallback` to determine how string-based attributes\n * are deserialized to JavaScript property values.\n * - `notify` (boolean): Causes a change in the property to fire a\n * non-bubbling event called `-changed`. Elements that have\n * enabled two-way binding to the property use this event to observe changes.\n * - `readOnly` (boolean): Creates a getter for the property, but no setter.\n * To set a read-only property, use the private setter method\n * `_setProperty(property, value)`.\n * - `observer` (string): Observer method name that will be called when\n * the property changes. The arguments of the method are\n * `(value, previousValue)`.\n * - `computed` (string): String describing method and dependent properties\n * for computing the value of this property (e.g. `'computeFoo(bar, zot)'`).\n * Computed properties are read-only by default and can only be changed\n * via the return value of the computing method.\n *\n * - `static get observers()`: Array of strings describing multi-property\n * observer methods and their dependent properties (e.g.\n * `'observeABC(a, b, c)'`).\n *\n * The base class provides default implementations for the following standard\n * custom element lifecycle callbacks; users may override these, but should\n * call the super method to ensure\n * - `constructor`: Run when the element is created or upgraded\n * - `connectedCallback`: Run each time the element is connected to the\n * document\n * - `disconnectedCallback`: Run each time the element is disconnected from\n * the document\n * - `attributeChangedCallback`: Run each time an attribute in\n * `observedAttributes` is set or removed (note: this element's default\n * `observedAttributes` implementation will automatically return an array\n * of dash-cased attributes based on `properties`)\n *\n * @mixinFunction\n * @polymer\n * @appliesMixin PropertyEffects\n * @appliesMixin PropertiesMixin\n * @property rootPath {string} Set to the value of `rootPath`,\n * which defaults to the main document path\n * @property importPath {string} Set to the value of the class's static\n * `importPath` property, which defaults to the path of this element's\n * `dom-module` (when `is` is used), but can be overridden for other\n * import strategies.\n * @summary Element class mixin that provides the core API for Polymer's\n * meta-programming features.\n */\nexport const ElementMixin = dedupingMixin(base => {\n\n /**\n * @constructor\n * @extends {base}\n * @implements {Polymer_PropertyEffects}\n * @implements {Polymer_PropertiesMixin}\n * @private\n */\n const polymerElementBase = PropertiesMixin(PropertyEffects(base));\n\n /**\n * Returns a list of properties with default values.\n * This list is created as an optimization since it is a subset of\n * the list returned from `_properties`.\n * This list is used in `_initializeProperties` to set property defaults.\n *\n * @param {PolymerElementConstructor} constructor Element class\n * @return {PolymerElementProperties} Flattened properties for this class\n * that have default values\n * @private\n */\n function propertyDefaults(constructor) {\n if (!constructor.hasOwnProperty(\n JSCompiler_renameProperty('__propertyDefaults', constructor))) {\n constructor.__propertyDefaults = null;\n let props = constructor._properties;\n for (let p in props) {\n let info = props[p];\n if ('value' in info) {\n constructor.__propertyDefaults = constructor.__propertyDefaults || {};\n constructor.__propertyDefaults[p] = info;\n }\n }\n }\n return constructor.__propertyDefaults;\n }\n\n /**\n * Returns a memoized version of the `observers` array.\n * @param {PolymerElementConstructor} constructor Element class\n * @return {Array} Array containing own observers for the given class\n * @protected\n */\n function ownObservers(constructor) {\n if (!constructor.hasOwnProperty(\n JSCompiler_renameProperty('__ownObservers', constructor))) {\n constructor.__ownObservers =\n constructor.hasOwnProperty(JSCompiler_renameProperty('observers', constructor)) ?\n /** @type {PolymerElementConstructor} */ (constructor).observers : null;\n }\n return constructor.__ownObservers;\n }\n\n /**\n * Creates effects for a property.\n *\n * Note, once a property has been set to\n * `readOnly`, `computed`, `reflectToAttribute`, or `notify`\n * these values may not be changed. For example, a subclass cannot\n * alter these settings. However, additional `observers` may be added\n * by subclasses.\n *\n * The info object should contain property metadata as follows:\n *\n * * `type`: {function} type to which an attribute matching the property\n * is deserialized. Note the property is camel-cased from a dash-cased\n * attribute. For example, 'foo-bar' attribute is deserialized to a\n * property named 'fooBar'.\n *\n * * `readOnly`: {boolean} creates a readOnly property and\n * makes a private setter for the private of the form '_setFoo' for a\n * property 'foo',\n *\n * * `computed`: {string} creates a computed property. A computed property\n * is also automatically set to `readOnly: true`. The value is calculated\n * by running a method and arguments parsed from the given string. For\n * example 'compute(foo)' will compute a given property when the\n * 'foo' property changes by executing the 'compute' method. This method\n * must return the computed value.\n *\n * * `reflectToAttribute`: {boolean} If true, the property value is reflected\n * to an attribute of the same name. Note, the attribute is dash-cased\n * so a property named 'fooBar' is reflected as 'foo-bar'.\n *\n * * `notify`: {boolean} sends a non-bubbling notification event when\n * the property changes. For example, a property named 'foo' sends an\n * event named 'foo-changed' with `event.detail` set to the value of\n * the property.\n *\n * * observer: {string} name of a method that runs when the property\n * changes. The arguments of the method are (value, previousValue).\n *\n * Note: Users may want control over modifying property\n * effects via subclassing. For example, a user might want to make a\n * reflectToAttribute property not do so in a subclass. We've chosen to\n * disable this because it leads to additional complication.\n * For example, a readOnly effect generates a special setter. If a subclass\n * disables the effect, the setter would fail unexpectedly.\n * Based on feedback, we may want to try to make effects more malleable\n * and/or provide an advanced api for manipulating them.\n * Also consider adding warnings when an effect cannot be changed.\n *\n * @param {!PolymerElement} proto Element class prototype to add accessors\n * and effects to\n * @param {string} name Name of the property.\n * @param {Object} info Info object from which to create property effects.\n * Supported keys:\n * @param {Object} allProps Flattened map of all properties defined in this\n * element (including inherited properties)\n * @return {void}\n * @private\n */\n function createPropertyFromConfig(proto, name, info, allProps) {\n // computed forces readOnly...\n if (info.computed) {\n info.readOnly = true;\n }\n // Note, since all computed properties are readOnly, this prevents\n // adding additional computed property effects (which leads to a confusing\n // setup where multiple triggers for setting a property)\n // While we do have `hasComputedEffect` this is set on the property's\n // dependencies rather than itself.\n if (info.computed && !proto._hasReadOnlyEffect(name)) {\n proto._createComputedProperty(name, info.computed, allProps);\n }\n if (info.readOnly && !proto._hasReadOnlyEffect(name)) {\n proto._createReadOnlyProperty(name, !info.computed);\n }\n if (info.reflectToAttribute && !proto._hasReflectEffect(name)) {\n proto._createReflectedProperty(name);\n }\n if (info.notify && !proto._hasNotifyEffect(name)) {\n proto._createNotifyingProperty(name);\n }\n // always add observer\n if (info.observer) {\n proto._createPropertyObserver(name, info.observer, allProps[info.observer]);\n }\n // always create the mapping from attribute back to property for deserialization.\n proto._addPropertyToAttributeMap(name);\n }\n\n /**\n * Process all style elements in the element template. Styles with the\n * `include` attribute are processed such that any styles in\n * the associated \"style modules\" are included in the element template.\n * @param {PolymerElementConstructor} klass Element class\n * @param {!HTMLTemplateElement} template Template to process\n * @param {string} is Name of element\n * @param {string} baseURI Base URI for element\n * @private\n */\n function processElementStyles(klass, template, is, baseURI) {\n const templateStyles = template.content.querySelectorAll('style');\n const stylesWithImports = stylesFromTemplate(template);\n // insert styles from at the top of the template\n const linkedStyles = stylesFromModuleImports(is);\n const firstTemplateChild = template.content.firstElementChild;\n for (let idx = 0; idx < linkedStyles.length; idx++) {\n let s = linkedStyles[idx];\n s.textContent = klass._processStyleText(s.textContent, baseURI);\n template.content.insertBefore(s, firstTemplateChild);\n }\n // keep track of the last \"concrete\" style in the template we have encountered\n let templateStyleIndex = 0;\n // ensure all gathered styles are actually in this template.\n for (let i = 0; i < stylesWithImports.length; i++) {\n let s = stylesWithImports[i];\n let templateStyle = templateStyles[templateStyleIndex];\n // if the style is not in this template, it's been \"included\" and\n // we put a clone of it in the template before the style that included it\n if (templateStyle !== s) {\n s = s.cloneNode(true);\n templateStyle.parentNode.insertBefore(s, templateStyle);\n } else {\n templateStyleIndex++;\n }\n s.textContent = klass._processStyleText(s.textContent, baseURI);\n }\n if (window.ShadyCSS) {\n window.ShadyCSS.prepareTemplate(template, is);\n }\n }\n\n /**\n * Look up template from dom-module for element\n *\n * @param {!string} is Element name to look up\n * @return {!HTMLTemplateElement} Template found in dom module, or\n * undefined if not found\n * @protected\n */\n function getTemplateFromDomModule(is) {\n let template = null;\n // Under strictTemplatePolicy in 3.x+, dom-module lookup is only allowed\n // when opted-in via allowTemplateFromDomModule\n if (is && (!strictTemplatePolicy || allowTemplateFromDomModule)) {\n template = DomModule.import(is, 'template');\n // Under strictTemplatePolicy, require any element with an `is`\n // specified to have a dom-module\n if (strictTemplatePolicy && !template) {\n throw new Error(`strictTemplatePolicy: expecting dom-module or null template for ${is}`);\n }\n }\n return template;\n }\n\n /**\n * @polymer\n * @mixinClass\n * @unrestricted\n * @implements {Polymer_ElementMixin}\n */\n class PolymerElement extends polymerElementBase {\n\n /**\n * Current Polymer version in Semver notation.\n * @type {string} Semver notation of the current version of Polymer.\n */\n static get polymerElementVersion() {\n return version;\n }\n\n /**\n * Override of PropertiesMixin _finalizeClass to create observers and\n * find the template.\n * @return {void}\n * @protected\n * @override\n * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do\n */\n static _finalizeClass() {\n super._finalizeClass();\n if (this.hasOwnProperty(\n JSCompiler_renameProperty('is', this)) && this.is) {\n register(this.prototype);\n }\n const observers = ownObservers(this);\n if (observers) {\n this.createObservers(observers, this._properties);\n }\n // note: create \"working\" template that is finalized at instance time\n let template = /** @type {PolymerElementConstructor} */ (this).template;\n if (template) {\n if (typeof template === 'string') {\n console.error('template getter must return HTMLTemplateElement');\n template = null;\n } else {\n template = template.cloneNode(true);\n }\n }\n\n this.prototype._template = template;\n }\n\n /**\n * Override of PropertiesChanged createProperties to create accessors\n * and property effects for all of the properties.\n * @return {void}\n * @protected\n * @override\n */\n static createProperties(props) {\n for (let p in props) {\n createPropertyFromConfig(this.prototype, p, props[p], props);\n }\n }\n\n /**\n * Creates observers for the given `observers` array.\n * Leverages `PropertyEffects` to create observers.\n * @param {Object} observers Array of observer descriptors for\n * this class\n * @param {Object} dynamicFns Object containing keys for any properties\n * that are functions and should trigger the effect when the function\n * reference is changed\n * @return {void}\n * @protected\n */\n static createObservers(observers, dynamicFns) {\n const proto = this.prototype;\n for (let i=0; i < observers.length; i++) {\n proto._createMethodObserver(observers[i], dynamicFns);\n }\n }\n\n /**\n * Returns the template that will be stamped into this element's shadow root.\n *\n * If a `static get is()` getter is defined, the default implementation\n * will return the first `` in a `dom-module` whose `id`\n * matches this element's `is`.\n *\n * Users may override this getter to return an arbitrary template\n * (in which case the `is` getter is unnecessary). The template returned\n * must be an `HTMLTemplateElement`.\n *\n * Note that when subclassing, if the super class overrode the default\n * implementation and the subclass would like to provide an alternate\n * template via a `dom-module`, it should override this getter and\n * return `DomModule.import(this.is, 'template')`.\n *\n * If a subclass would like to modify the super class template, it should\n * clone it rather than modify it in place. If the getter does expensive\n * work such as cloning/modifying a template, it should memoize the\n * template for maximum performance:\n *\n * let memoizedTemplate;\n * class MySubClass extends MySuperClass {\n * static get template() {\n * if (!memoizedTemplate) {\n * memoizedTemplate = super.template.cloneNode(true);\n * let subContent = document.createElement('div');\n * subContent.textContent = 'This came from MySubClass';\n * memoizedTemplate.content.appendChild(subContent);\n * }\n * return memoizedTemplate;\n * }\n * }\n *\n * @return {!HTMLTemplateElement|string} Template to be stamped\n */\n static get template() {\n // Explanation of template-related properties:\n // - constructor.template (this getter): the template for the class.\n // This can come from the prototype (for legacy elements), from a\n // dom-module, or from the super class's template (or can be overridden\n // altogether by the user)\n // - constructor._template: memoized version of constructor.template\n // - prototype._template: working template for the element, which will be\n // parsed and modified in place. It is a cloned version of\n // constructor.template, saved in _finalizeClass(). Note that before\n // this getter is called, for legacy elements this could be from a\n // _template field on the info object passed to Polymer(), a behavior,\n // or set in registered(); once the static getter runs, a clone of it\n // will overwrite it on the prototype as the working template.\n if (!this.hasOwnProperty(JSCompiler_renameProperty('_template', this))) {\n this._template =\n // If user has put template on prototype (e.g. in legacy via registered\n // callback or info object), prefer that first\n this.prototype.hasOwnProperty(JSCompiler_renameProperty('_template', this.prototype)) ?\n this.prototype._template :\n // Look in dom-module associated with this element's is\n (getTemplateFromDomModule(/** @type {PolymerElementConstructor}*/ (this).is) ||\n // Next look for superclass template (call the super impl this\n // way so that `this` points to the superclass)\n Object.getPrototypeOf(/** @type {PolymerElementConstructor}*/ (this).prototype).constructor.template);\n }\n return this._template;\n }\n\n /**\n * Set the template.\n *\n * @param {!HTMLTemplateElement|string} value Template to set.\n */\n static set template(value) {\n this._template = value;\n }\n\n /**\n * Path matching the url from which the element was imported.\n *\n * This path is used to resolve url's in template style cssText.\n * The `importPath` property is also set on element instances and can be\n * used to create bindings relative to the import path.\n *\n * For elements defined in ES modules, users should implement\n * `static get importMeta() { return import.meta; }`, and the default\n * implementation of `importPath` will return `import.meta.url`'s path.\n * For elements defined in HTML imports, this getter will return the path\n * to the document containing a `dom-module` element matching this\n * element's static `is` property.\n *\n * Note, this path should contain a trailing `/`.\n *\n * @return {string} The import path for this element class\n * @suppress {missingProperties}\n */\n static get importPath() {\n if (!this.hasOwnProperty(JSCompiler_renameProperty('_importPath', this))) {\n const meta = this.importMeta;\n if (meta) {\n this._importPath = pathFromUrl(meta.url);\n } else {\n const module = DomModule.import(/** @type {PolymerElementConstructor} */ (this).is);\n this._importPath = (module && module.assetpath) ||\n Object.getPrototypeOf(/** @type {PolymerElementConstructor}*/ (this).prototype).constructor.importPath;\n }\n }\n return this._importPath;\n }\n\n constructor() {\n super();\n /** @type {HTMLTemplateElement} */\n this._template;\n /** @type {string} */\n this._importPath;\n /** @type {string} */\n this.rootPath;\n /** @type {string} */\n this.importPath;\n /** @type {StampedTemplate | HTMLElement | ShadowRoot} */\n this.root;\n /** @type {!Object} */\n this.$;\n }\n\n /**\n * Overrides the default `PropertyAccessors` to ensure class\n * metaprogramming related to property accessors and effects has\n * completed (calls `finalize`).\n *\n * It also initializes any property defaults provided via `value` in\n * `properties` metadata.\n *\n * @return {void}\n * @override\n * @suppress {invalidCasts}\n */\n _initializeProperties() {\n instanceCount++;\n this.constructor.finalize();\n // note: finalize template when we have access to `localName` to\n // avoid dependence on `is` for polyfilling styling.\n this.constructor._finalizeTemplate(/** @type {!HTMLElement} */(this).localName);\n super._initializeProperties();\n // set path defaults\n this.rootPath = rootPath;\n this.importPath = this.constructor.importPath;\n // apply property defaults...\n let p$ = propertyDefaults(this.constructor);\n if (!p$) {\n return;\n }\n for (let p in p$) {\n let info = p$[p];\n // Don't set default value if there is already an own property, which\n // happens when a `properties` property with default but no effects had\n // a property set (e.g. bound) by its host before upgrade\n if (!this.hasOwnProperty(p)) {\n let value = typeof info.value == 'function' ?\n info.value.call(this) :\n info.value;\n // Set via `_setProperty` if there is an accessor, to enable\n // initializing readOnly property defaults\n if (this._hasAccessor(p)) {\n this._setPendingProperty(p, value, true);\n } else {\n this[p] = value;\n }\n }\n }\n }\n\n /**\n * Gather style text for a style element in the template.\n *\n * @param {string} cssText Text containing styling to process\n * @param {string} baseURI Base URI to rebase CSS paths against\n * @return {string} The processed CSS text\n * @protected\n */\n static _processStyleText(cssText, baseURI) {\n return resolveCss(cssText, baseURI);\n }\n\n /**\n * Configures an element `proto` to function with a given `template`.\n * The element name `is` and extends `ext` must be specified for ShadyCSS\n * style scoping.\n *\n * @param {string} is Tag name (or type extension name) for this element\n * @return {void}\n * @protected\n */\n static _finalizeTemplate(is) {\n /** @const {HTMLTemplateElement} */\n const template = this.prototype._template;\n if (template && !template.__polymerFinalized) {\n template.__polymerFinalized = true;\n const importPath = this.importPath;\n const baseURI = importPath ? resolveUrl(importPath) : '';\n // e.g. support `include=\"module-name\"`, and ShadyCSS\n processElementStyles(this, template, is, baseURI);\n this.prototype._bindTemplate(template);\n }\n }\n\n /**\n * Provides a default implementation of the standard Custom Elements\n * `connectedCallback`.\n *\n * The default implementation enables the property effects system and\n * flushes any pending properties, and updates shimmed CSS properties\n * when using the ShadyCSS scoping/custom properties polyfill.\n *\n * @suppress {missingProperties, invalidCasts} Super may or may not implement the callback\n * @return {void}\n */\n connectedCallback() {\n if (window.ShadyCSS && this._template) {\n window.ShadyCSS.styleElement(/** @type {!HTMLElement} */(this));\n }\n super.connectedCallback();\n }\n\n /**\n * Stamps the element template.\n *\n * @return {void}\n * @override\n */\n ready() {\n if (this._template) {\n this.root = this._stampTemplate(this._template);\n this.$ = this.root.$;\n }\n super.ready();\n }\n\n /**\n * Implements `PropertyEffects`'s `_readyClients` call. Attaches\n * element dom by calling `_attachDom` with the dom stamped from the\n * element's template via `_stampTemplate`. Note that this allows\n * client dom to be attached to the element prior to any observers\n * running.\n *\n * @return {void}\n * @override\n */\n _readyClients() {\n if (this._template) {\n this.root = this._attachDom(/** @type {StampedTemplate} */(this.root));\n }\n // The super._readyClients here sets the clients initialized flag.\n // We must wait to do this until after client dom is created/attached\n // so that this flag can be checked to prevent notifications fired\n // during this process from being handled before clients are ready.\n super._readyClients();\n }\n\n\n /**\n * Attaches an element's stamped dom to itself. By default,\n * this method creates a `shadowRoot` and adds the dom to it.\n * However, this method may be overridden to allow an element\n * to put its dom in another location.\n *\n * @throws {Error}\n * @suppress {missingReturn}\n * @param {StampedTemplate} dom to attach to the element.\n * @return {ShadowRoot} node to which the dom has been attached.\n */\n _attachDom(dom) {\n if (this.attachShadow) {\n if (dom) {\n if (!this.shadowRoot) {\n this.attachShadow({mode: 'open'});\n }\n this.shadowRoot.appendChild(dom);\n return this.shadowRoot;\n }\n return null;\n } else {\n throw new Error('ShadowDOM not available. ' +\n // TODO(sorvell): move to compile-time conditional when supported\n 'PolymerElement can create dom as children instead of in ' +\n 'ShadowDOM by setting `this.root = this;\\` before \\`ready\\`.');\n }\n }\n\n /**\n * When using the ShadyCSS scoping and custom property shim, causes all\n * shimmed styles in this element (and its subtree) to be updated\n * based on current custom property values.\n *\n * The optional parameter overrides inline custom property styles with an\n * object of properties where the keys are CSS properties, and the values\n * are strings.\n *\n * Example: `this.updateStyles({'--color': 'blue'})`\n *\n * These properties are retained unless a value of `null` is set.\n *\n * Note: This function does not support updating CSS mixins.\n * You can not dynamically change the value of an `@apply`.\n *\n * @param {Object=} properties Bag of custom property key/values to\n * apply to this element.\n * @return {void}\n * @suppress {invalidCasts}\n */\n updateStyles(properties) {\n if (window.ShadyCSS) {\n window.ShadyCSS.styleSubtree(/** @type {!HTMLElement} */(this), properties);\n }\n }\n\n /**\n * Rewrites a given URL relative to a base URL. The base URL defaults to\n * the original location of the document containing the `dom-module` for\n * this element. This method will return the same URL before and after\n * bundling.\n *\n * Note that this function performs no resolution for URLs that start\n * with `/` (absolute URLs) or `#` (hash identifiers). For general purpose\n * URL resolution, use `window.URL`.\n *\n * @param {string} url URL to resolve.\n * @param {string=} base Optional base URL to resolve against, defaults\n * to the element's `importPath`\n * @return {string} Rewritten URL relative to base\n */\n resolveUrl(url, base) {\n if (!base && this.importPath) {\n base = resolveUrl(this.importPath);\n }\n return resolveUrl(url, base);\n }\n\n /**\n * Overrides `PropertyAccessors` to add map of dynamic functions on\n * template info, for consumption by `PropertyEffects` template binding\n * code. This map determines which method templates should have accessors\n * created for them.\n *\n * @override\n * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do\n */\n static _parseTemplateContent(template, templateInfo, nodeInfo) {\n templateInfo.dynamicFns = templateInfo.dynamicFns || this._properties;\n return super._parseTemplateContent(template, templateInfo, nodeInfo);\n }\n\n }\n\n return PolymerElement;\n});\n\n/**\n * Total number of Polymer element instances created.\n * @type {number}\n */\nexport let instanceCount = 0;\n\n/**\n * Array of Polymer element classes that have been finalized.\n * @type {Array}\n */\nexport const registrations = [];\n\n/**\n * @param {!PolymerElementConstructor} prototype Element prototype to log\n * @this {this}\n * @private\n */\nfunction _regLog(prototype) {\n console.log('[' + prototype.is + ']: registered');\n}\n\n/**\n * Registers a class prototype for telemetry purposes.\n * @param {HTMLElement} prototype Element prototype to register\n * @this {this}\n * @protected\n */\nexport function register(prototype) {\n registrations.push(prototype);\n}\n\n/**\n * Logs all elements registered with an `is` to the console.\n * @public\n * @this {this}\n */\nexport function dumpRegistrations() {\n registrations.forEach(_regLog);\n}\n\n/**\n * When using the ShadyCSS scoping and custom property shim, causes all\n * shimmed `styles` (via `custom-style`) in the document (and its subtree)\n * to be updated based on current custom property values.\n *\n * The optional parameter overrides inline custom property styles with an\n * object of properties where the keys are CSS properties, and the values\n * are strings.\n *\n * Example: `updateStyles({'--color': 'blue'})`\n *\n * These properties are retained unless a value of `null` is set.\n *\n * @param {Object=} props Bag of custom property key/values to\n * apply to the document.\n * @return {void}\n */\nexport const updateStyles = function(props) {\n if (window.ShadyCSS) {\n window.ShadyCSS.styleDocument(props);\n }\n};\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\n\nimport {IronMeta} from '@polymer/iron-meta/iron-meta.js';\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\nimport {dom} from '@polymer/polymer/lib/legacy/polymer.dom.js';\n/**\n * The `iron-iconset-svg` element allows users to define their own icon sets\n * that contain svg icons. The svg icon elements should be children of the\n * `iron-iconset-svg` element. Multiple icons should be given distinct id's.\n *\n * Using svg elements to create icons has a few advantages over traditional\n * bitmap graphics like jpg or png. Icons that use svg are vector based so\n * they are resolution independent and should look good on any device. They\n * are stylable via css. Icons can be themed, colorized, and even animated.\n *\n * Example:\n *\n * \n * \n * \n *\n * This will automatically register the icon set \"my-svg-icons\" to the iconset\n * database. To use these icons from within another element, make a\n * `iron-iconset` element and call the `byId` method\n * to retrieve a given iconset. To apply a particular icon inside an\n * element use the `applyIcon` method. For example:\n *\n * iconset.applyIcon(iconNode, 'car');\n *\n * @element iron-iconset-svg\n * @demo demo/index.html\n * @implements {Polymer.Iconset}\n */\nPolymer({\n is: 'iron-iconset-svg',\n\n properties: {\n\n /**\n * The name of the iconset.\n */\n name: {type: String, observer: '_nameChanged'},\n\n /**\n * The size of an individual icon. Note that icons must be square.\n */\n size: {type: Number, value: 24},\n\n /**\n * Set to true to enable mirroring of icons where specified when they are\n * stamped. Icons that should be mirrored should be decorated with a\n * `mirror-in-rtl` attribute.\n *\n * NOTE: For performance reasons, direction will be resolved once per\n * document per iconset, so moving icons in and out of RTL subtrees will\n * not cause their mirrored state to change.\n */\n rtlMirroring: {type: Boolean, value: false},\n\n /**\n * Set to true to measure RTL based on the dir attribute on the body or\n * html elements (measured on document.body or document.documentElement as\n * available).\n */\n useGlobalRtlAttribute: {type: Boolean, value: false}\n },\n\n created: function() {\n this._meta = new IronMeta({type: 'iconset', key: null, value: null});\n },\n\n attached: function() {\n this.style.display = 'none';\n },\n\n /**\n * Construct an array of all icon names in this iconset.\n *\n * @return {!Array} Array of icon names.\n */\n getIconNames: function() {\n this._icons = this._createIconMap();\n return Object.keys(this._icons).map(function(n) {\n return this.name + ':' + n;\n }, this);\n },\n\n /**\n * Applies an icon to the given element.\n *\n * An svg icon is prepended to the element's shadowRoot if it exists,\n * otherwise to the element itself.\n *\n * If RTL mirroring is enabled, and the icon is marked to be mirrored in\n * RTL, the element will be tested (once and only once ever for each\n * iconset) to determine the direction of the subtree the element is in.\n * This direction will apply to all future icon applications, although only\n * icons marked to be mirrored will be affected.\n *\n * @method applyIcon\n * @param {Element} element Element to which the icon is applied.\n * @param {string} iconName Name of the icon to apply.\n * @return {?Element} The svg element which renders the icon.\n */\n applyIcon: function(element, iconName) {\n // Remove old svg element\n this.removeIcon(element);\n // install new svg element\n var svg = this._cloneIcon(\n iconName, this.rtlMirroring && this._targetIsRTL(element));\n if (svg) {\n // insert svg element into shadow root, if it exists\n var pde = dom(element.root || element);\n pde.insertBefore(svg, pde.childNodes[0]);\n return element._svgIcon = svg;\n }\n return null;\n },\n\n /**\n * Remove an icon from the given element by undoing the changes effected\n * by `applyIcon`.\n *\n * @param {Element} element The element from which the icon is removed.\n */\n removeIcon: function(element) {\n // Remove old svg element\n if (element._svgIcon) {\n dom(element.root || element).removeChild(element._svgIcon);\n element._svgIcon = null;\n }\n },\n\n /**\n * Measures and memoizes the direction of the element. Note that this\n * measurement is only done once and the result is memoized for future\n * invocations.\n */\n _targetIsRTL: function(target) {\n if (this.__targetIsRTL == null) {\n if (this.useGlobalRtlAttribute) {\n var globalElement =\n (document.body && document.body.hasAttribute('dir')) ?\n document.body :\n document.documentElement;\n\n this.__targetIsRTL = globalElement.getAttribute('dir') === 'rtl';\n } else {\n if (target && target.nodeType !== Node.ELEMENT_NODE) {\n target = target.host;\n }\n\n this.__targetIsRTL =\n target && window.getComputedStyle(target)['direction'] === 'rtl';\n }\n }\n\n return this.__targetIsRTL;\n },\n\n /**\n *\n * When name is changed, register iconset metadata\n *\n */\n _nameChanged: function() {\n this._meta.value = null;\n this._meta.key = this.name;\n this._meta.value = this;\n\n this.async(function() {\n this.fire('iron-iconset-added', this, {node: window});\n });\n },\n\n /**\n * Create a map of child SVG elements by id.\n *\n * @return {!Object} Map of id's to SVG elements.\n */\n _createIconMap: function() {\n // Objects chained to Object.prototype (`{}`) have members. Specifically,\n // on FF there is a `watch` method that confuses the icon map, so we\n // need to use a null-based object here.\n var icons = Object.create(null);\n dom(this).querySelectorAll('[id]').forEach(function(icon) {\n icons[icon.id] = icon;\n });\n return icons;\n },\n\n /**\n * Produce installable clone of the SVG element matching `id` in this\n * iconset, or `undefined` if there is no matching element.\n *\n * @return {Element} Returns an installable clone of the SVG element\n * matching `id`.\n */\n _cloneIcon: function(id, mirrorAllowed) {\n // create the icon map on-demand, since the iconset itself has no discrete\n // signal to know when it's children are fully parsed\n this._icons = this._icons || this._createIconMap();\n return this._prepareSvgClone(this._icons[id], this.size, mirrorAllowed);\n },\n\n /**\n * @param {Element} sourceSvg\n * @param {number} size\n * @param {Boolean} mirrorAllowed\n * @return {Element}\n */\n _prepareSvgClone: function(sourceSvg, size, mirrorAllowed) {\n if (sourceSvg) {\n var content = sourceSvg.cloneNode(true),\n svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg'),\n viewBox =\n content.getAttribute('viewBox') || '0 0 ' + size + ' ' + size,\n cssText =\n 'pointer-events: none; display: block; width: 100%; height: 100%;';\n\n if (mirrorAllowed && content.hasAttribute('mirror-in-rtl')) {\n cssText +=\n '-webkit-transform:scale(-1,1);transform:scale(-1,1);transform-origin:center;';\n }\n\n svg.setAttribute('viewBox', viewBox);\n svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');\n svg.setAttribute('focusable', 'false');\n // TODO(dfreedm): `pointer-events: none` works around\n // https://crbug.com/370136\n // TODO(sjmiles): inline style may not be ideal, but avoids requiring a\n // shadow-root\n svg.style.cssText = cssText;\n svg.appendChild(content).removeAttribute('id');\n return svg;\n }\n return null;\n }\n\n});\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nexport const nativeShadow = !(window['ShadyDOM'] && window['ShadyDOM']['inUse']);\nlet nativeCssVariables_;\n\n/**\n * @param {(ShadyCSSOptions | ShadyCSSInterface)=} settings\n */\nfunction calcCssVariables(settings) {\n if (settings && settings['shimcssproperties']) {\n nativeCssVariables_ = false;\n } else {\n // chrome 49 has semi-working css vars, check if box-shadow works\n // safari 9.1 has a recalc bug: https://bugs.webkit.org/show_bug.cgi?id=155782\n // However, shim css custom properties are only supported with ShadyDOM enabled,\n // so fall back on native if we do not detect ShadyDOM\n // Edge 15: custom properties used in ::before and ::after will also be used in the parent element\n // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12414257/\n nativeCssVariables_ = nativeShadow || Boolean(!navigator.userAgent.match(/AppleWebKit\\/601|Edge\\/15/) &&\n window.CSS && CSS.supports && CSS.supports('box-shadow', '0 0 0 var(--foo)'));\n }\n}\n\n/** @type {string | undefined} */\nexport let cssBuild;\nif (window.ShadyCSS && window.ShadyCSS.cssBuild !== undefined) {\n cssBuild = window.ShadyCSS.cssBuild;\n}\n\n/** @type {boolean} */\nexport const disableRuntime = Boolean(window.ShadyCSS && window.ShadyCSS.disableRuntime);\n\nif (window.ShadyCSS && window.ShadyCSS.nativeCss !== undefined) {\n nativeCssVariables_ = window.ShadyCSS.nativeCss;\n} else if (window.ShadyCSS) {\n calcCssVariables(window.ShadyCSS);\n // reset window variable to let ShadyCSS API take its place\n window.ShadyCSS = undefined;\n} else {\n calcCssVariables(window['WebComponents'] && window['WebComponents']['flags']);\n}\n\n// Hack for type error under new type inference which doesn't like that\n// nativeCssVariables is updated in a function and assigns the type\n// `function(): ?` instead of `boolean`.\nexport const nativeCssVariables = /** @type {boolean} */(nativeCssVariables_);","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\nexport const VAR_ASSIGN = /(?:^|[;\\s{]\\s*)(--[\\w-]*?)\\s*:\\s*(?:((?:'(?:\\\\'|.)*?'|\"(?:\\\\\"|.)*?\"|\\([^)]*?\\)|[^};{])+)|\\{([^}]*)\\}(?:(?=[;\\s}])|$))/gi;\nexport const MIXIN_MATCH = /(?:^|\\W+)@apply\\s*\\(?([^);\\n]*)\\)?/gi;\nexport const VAR_CONSUMED = /(--[\\w-]+)\\s*([:,;)]|$)/gi;\nexport const ANIMATION_MATCH = /(animation\\s*:)|(animation-name\\s*:)/;\nexport const MEDIA_MATCH = /@media\\s(.*)/;\nexport const IS_VAR = /^--/;\nexport const BRACKETED = /\\{[^}]*\\}/g;\nexport const HOST_PREFIX = '(?:^|[^.#[:])';\nexport const HOST_SUFFIX = '($|[.:[\\\\s>+~])';\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nimport { MIXIN_MATCH, VAR_ASSIGN } from './common-regex.js';\n\n/**\n * @param {Element} element\n * @param {Object=} properties\n */\nexport function updateNativeProperties(element, properties) {\n // remove previous properties\n for (let p in properties) {\n // NOTE: for bc with shim, don't apply null values.\n if (p === null) {\n element.style.removeProperty(p);\n } else {\n element.style.setProperty(p, properties[p]);\n }\n }\n}\n\n/**\n * @param {Element} element\n * @param {string} property\n * @return {string}\n */\nexport function getComputedStyleValue(element, property) {\n /**\n * @const {string}\n */\n const value = window.getComputedStyle(element).getPropertyValue(property);\n if (!value) {\n return '';\n } else {\n return value.trim();\n }\n}\n\n/**\n * return true if `cssText` contains a mixin definition or consumption\n * @param {string} cssText\n * @return {boolean}\n */\nexport function detectMixin(cssText) {\n const has = MIXIN_MATCH.test(cssText) || VAR_ASSIGN.test(cssText);\n // reset state of the regexes\n MIXIN_MATCH.lastIndex = 0;\n VAR_ASSIGN.lastIndex = 0;\n return has;\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\nimport '../utils/boot.js';\n\nimport { resolveUrl, pathFromUrl } from '../utils/resolve-url.js';\nimport { strictTemplatePolicy } from '../utils/settings.js';\n\nlet modules = {};\nlet lcModules = {};\n/**\n * Sets a dom-module into the global registry by id.\n *\n * @param {string} id dom-module id\n * @param {DomModule} module dom-module instance\n * @return {void}\n */\nfunction setModule(id, module) {\n // store id separate from lowercased id so that\n // in all cases mixedCase id will stored distinctly\n // and lowercase version is a fallback\n modules[id] = lcModules[id.toLowerCase()] = module;\n}\n/**\n * Retrieves a dom-module from the global registry by id.\n *\n * @param {string} id dom-module id\n * @return {DomModule!} dom-module instance\n */\nfunction findModule(id) {\n return modules[id] || lcModules[id.toLowerCase()];\n}\n\nfunction styleOutsideTemplateCheck(inst) {\n if (inst.querySelector('style')) {\n console.warn('dom-module %s has style outside template', inst.id);\n }\n}\n\n/**\n * The `dom-module` element registers the dom it contains to the name given\n * by the module's id attribute. It provides a unified database of dom\n * accessible via its static `import` API.\n *\n * A key use case of `dom-module` is for providing custom element ``s\n * via HTML imports that are parsed by the native HTML parser, that can be\n * relocated during a bundling pass and still looked up by `id`.\n *\n * Example:\n *\n * \n * \n * \n *\n * Then in code in some other location that cannot access the dom-module above\n *\n * let img = customElements.get('dom-module').import('foo', 'img');\n *\n * @customElement\n * @extends HTMLElement\n * @summary Custom element that provides a registry of relocatable DOM content\n * by `id` that is agnostic to bundling.\n * @unrestricted\n */\nexport class DomModule extends HTMLElement {\n\n static get observedAttributes() { return ['id']; }\n\n /**\n * Retrieves the element specified by the css `selector` in the module\n * registered by `id`. For example, this.import('foo', 'img');\n * @param {string} id The id of the dom-module in which to search.\n * @param {string=} selector The css selector by which to find the element.\n * @return {Element} Returns the element which matches `selector` in the\n * module registered at the specified `id`.\n *\n * @export\n * @nocollapse Referred to indirectly in style-gather.js\n */\n static import(id, selector) {\n if (id) {\n let m = findModule(id);\n if (m && selector) {\n return m.querySelector(selector);\n }\n return m;\n }\n return null;\n }\n\n /* eslint-disable no-unused-vars */\n /**\n * @param {string} name Name of attribute.\n * @param {?string} old Old value of attribute.\n * @param {?string} value Current value of attribute.\n * @param {?string} namespace Attribute namespace.\n * @return {void}\n * @override\n */\n attributeChangedCallback(name, old, value, namespace) {\n if (old !== value) {\n this.register();\n }\n }\n /* eslint-enable no-unused-args */\n\n /**\n * The absolute URL of the original location of this `dom-module`.\n *\n * This value will differ from this element's `ownerDocument` in the\n * following ways:\n * - Takes into account any `assetpath` attribute added during bundling\n * to indicate the original location relative to the bundled location\n * - Uses the HTMLImports polyfill's `importForElement` API to ensure\n * the path is relative to the import document's location since\n * `ownerDocument` is not currently polyfilled\n */\n get assetpath() {\n // Don't override existing assetpath.\n if (!this.__assetpath) {\n // note: assetpath set via an attribute must be relative to this\n // element's location; accomodate polyfilled HTMLImports\n const owner = window.HTMLImports && HTMLImports.importForElement ?\n HTMLImports.importForElement(this) || document : this.ownerDocument;\n const url = resolveUrl(\n this.getAttribute('assetpath') || '', owner.baseURI);\n this.__assetpath = pathFromUrl(url);\n }\n return this.__assetpath;\n }\n\n /**\n * Registers the dom-module at a given id. This method should only be called\n * when a dom-module is imperatively created. For\n * example, `document.createElement('dom-module').register('foo')`.\n * @param {string=} id The id at which to register the dom-module.\n * @return {void}\n */\n register(id) {\n id = id || this.id;\n if (id) {\n // Under strictTemplatePolicy, reject and null out any re-registered\n // dom-module since it is ambiguous whether first-in or last-in is trusted\n if (strictTemplatePolicy && findModule(id) !== undefined) {\n setModule(id, null);\n throw new Error(`strictTemplatePolicy: dom-module ${id} re-registered`);\n }\n this.id = id;\n setModule(id, this);\n styleOutsideTemplateCheck(this);\n }\n }\n}\n\nDomModule.prototype['modules'] = modules;\n\ncustomElements.define('dom-module', DomModule);\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n/**\n * Module for scheduling flushable pre-render and post-render tasks.\n *\n * @summary Module for scheduling flushable pre-render and post-render tasks.\n */\n\nimport './boot.js';\n\nlet scheduled = false;\nlet beforeRenderQueue = [];\nlet afterRenderQueue = [];\n\nfunction schedule() {\n scheduled = true;\n // before next render\n requestAnimationFrame(function() {\n scheduled = false;\n flushQueue(beforeRenderQueue);\n // after the render\n setTimeout(function() {\n runQueue(afterRenderQueue);\n });\n });\n}\n\nfunction flushQueue(queue) {\n while (queue.length) {\n callMethod(queue.shift());\n }\n}\n\nfunction runQueue(queue) {\n for (let i=0, l=queue.length; i < l; i++) {\n callMethod(queue.shift());\n }\n}\n\nfunction callMethod(info) {\n const context = info[0];\n const callback = info[1];\n const args = info[2];\n try {\n callback.apply(context, args);\n } catch(e) {\n setTimeout(() => {\n throw e;\n });\n }\n}\n\n/**\n * Flushes all `beforeNextRender` tasks, followed by all `afterNextRender`\n * tasks.\n *\n * @return {void}\n */\nexport function flush() {\n while (beforeRenderQueue.length || afterRenderQueue.length) {\n flushQueue(beforeRenderQueue);\n flushQueue(afterRenderQueue);\n }\n scheduled = false;\n}\n\n\n/**\n * Enqueues a callback which will be run before the next render, at\n * `requestAnimationFrame` timing.\n *\n * This method is useful for enqueuing work that requires DOM measurement,\n * since measurement may not be reliable in custom element callbacks before\n * the first render, as well as for batching measurement tasks in general.\n *\n * Tasks in this queue may be flushed by calling `flush()`.\n *\n * @param {*} context Context object the callback function will be bound to\n * @param {function(...*):void} callback Callback function\n * @param {!Array=} args An array of arguments to call the callback function with\n * @return {void}\n */\nexport function beforeNextRender(context, callback, args) {\n if (!scheduled) {\n schedule();\n }\n beforeRenderQueue.push([context, callback, args]);\n}\n\n/**\n * Enqueues a callback which will be run after the next render, equivalent\n * to one task (`setTimeout`) after the next `requestAnimationFrame`.\n *\n * This method is useful for tuning the first-render performance of an\n * element or application by deferring non-critical work until after the\n * first paint. Typical non-render-critical work may include adding UI\n * event listeners and aria attributes.\n *\n * @param {*} context Context object the callback function will be bound to\n * @param {function(...*):void} callback Callback function\n * @param {!Array=} args An array of arguments to call the callback function with\n * @return {void}\n */\nexport function afterNextRender(context, callback, args) {\n if (!scheduled) {\n schedule();\n }\n afterRenderQueue.push([context, callback, args]);\n}\n\n","/**\n@license\nCopyright (c) 2015 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at\nhttp://polymer.github.io/LICENSE.txt The complete set of authors may be found at\nhttp://polymer.github.io/AUTHORS.txt The complete set of contributors may be\nfound at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as\npart of the polymer project is also subject to an additional IP rights grant\nfound at http://polymer.github.io/PATENTS.txt\n*/\nimport '@polymer/polymer/polymer-legacy.js';\n\nimport {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';\n\nexport class IronMeta {\n /**\n * @param {{\n * type: (string|null|undefined),\n * key: (string|null|undefined),\n * value: *,\n * }=} options\n */\n constructor(options) {\n IronMeta[' '](options);\n\n /** @type {string} */\n this.type = (options && options.type) || 'default';\n /** @type {string|null|undefined} */\n this.key = options && options.key;\n if (options && 'value' in options) {\n /** @type {*} */\n this.value = options.value;\n }\n }\n\n /** @return {*} */\n get value() {\n var type = this.type;\n var key = this.key;\n\n if (type && key) {\n return IronMeta.types[type] && IronMeta.types[type][key];\n }\n }\n\n /** @param {*} value */\n set value(value) {\n var type = this.type;\n var key = this.key;\n\n if (type && key) {\n type = IronMeta.types[type] = IronMeta.types[type] || {};\n if (value == null) {\n delete type[key];\n } else {\n type[key] = value;\n }\n }\n }\n\n /** @return {!Array<*>} */\n get list() {\n var type = this.type;\n\n if (type) {\n var items = IronMeta.types[this.type];\n if (!items) {\n return [];\n }\n\n return Object.keys(items).map(function(key) {\n return metaDatas[this.type][key];\n }, this);\n }\n }\n\n /**\n * @param {string} key\n * @return {*}\n */\n byKey(key) {\n this.key = key;\n return this.value;\n }\n};\n\n// This function is used to convince Closure not to remove constructor calls\n// for instances that are not held anywhere. For example, when\n// `new IronMeta({...})` is used only for the side effect of adding a value.\nIronMeta[' '] = function() {};\n\nIronMeta.types = {};\n\nvar metaDatas = IronMeta.types;\n\n/**\n`iron-meta` is a generic element you can use for sharing information across the\nDOM tree. It uses [monostate pattern](http://c2.com/cgi/wiki?MonostatePattern)\nsuch that any instance of iron-meta has access to the shared information. You\ncan use `iron-meta` to share whatever you want (or create an extension [like\nx-meta] for enhancements).\n\nThe `iron-meta` instances containing your actual data can be loaded in an\nimport, or constructed in any way you see fit. The only requirement is that you\ncreate them before you try to access them.\n\nExamples:\n\nIf I create an instance like this:\n\n {\n\n /**\n * @polymer\n * @mixinClass\n * @implements {Polymer_TemplateStamp}\n */\n class TemplateStamp extends superClass {\n\n /**\n * Scans a template to produce template metadata.\n *\n * Template-specific metadata are stored in the object returned, and node-\n * specific metadata are stored in objects in its flattened `nodeInfoList`\n * array. Only nodes in the template that were parsed as nodes of\n * interest contain an object in `nodeInfoList`. Each `nodeInfo` object\n * contains an `index` (`childNodes` index in parent) and optionally\n * `parent`, which points to node info of its parent (including its index).\n *\n * The template metadata object returned from this method has the following\n * structure (many fields optional):\n *\n * ```js\n * {\n * // Flattened list of node metadata (for nodes that generated metadata)\n * nodeInfoList: [\n * {\n * // `id` attribute for any nodes with id's for generating `$` map\n * id: {string},\n * // `on-event=\"handler\"` metadata\n * events: [\n * {\n * name: {string}, // event name\n * value: {string}, // handler method name\n * }, ...\n * ],\n * // Notes when the template contained a `` for shady DOM\n * // optimization purposes\n * hasInsertionPoint: {boolean},\n * // For nested ``` nodes, nested template metadata\n * templateInfo: {object}, // nested template metadata\n * // Metadata to allow efficient retrieval of instanced node\n * // corresponding to this metadata\n * parentInfo: {number}, // reference to parent nodeInfo>\n * parentIndex: {number}, // index in parent's `childNodes` collection\n * infoIndex: {number}, // index of this `nodeInfo` in `templateInfo.nodeInfoList`\n * },\n * ...\n * ],\n * // When true, the template had the `strip-whitespace` attribute\n * // or was nested in a template with that setting\n * stripWhitespace: {boolean},\n * // For nested templates, nested template content is moved into\n * // a document fragment stored here; this is an optimization to\n * // avoid the cost of nested template cloning\n * content: {DocumentFragment}\n * }\n * ```\n *\n * This method kicks off a recursive treewalk as follows:\n *\n * ```\n * _parseTemplate <---------------------+\n * _parseTemplateContent |\n * _parseTemplateNode <------------|--+\n * _parseTemplateNestedTemplate --+ |\n * _parseTemplateChildNodes ---------+\n * _parseTemplateNodeAttributes\n * _parseTemplateNodeAttribute\n *\n * ```\n *\n * These methods may be overridden to add custom metadata about templates\n * to either `templateInfo` or `nodeInfo`.\n *\n * Note that this method may be destructive to the template, in that\n * e.g. event annotations may be removed after being noted in the\n * template metadata.\n *\n * @param {!HTMLTemplateElement} template Template to parse\n * @param {TemplateInfo=} outerTemplateInfo Template metadata from the outer\n * template, for parsing nested templates\n * @return {!TemplateInfo} Parsed template metadata\n */\n static _parseTemplate(template, outerTemplateInfo) {\n // since a template may be re-used, memo-ize metadata\n if (!template._templateInfo) {\n let templateInfo = template._templateInfo = {};\n templateInfo.nodeInfoList = [];\n templateInfo.stripWhiteSpace =\n (outerTemplateInfo && outerTemplateInfo.stripWhiteSpace) ||\n template.hasAttribute('strip-whitespace');\n this._parseTemplateContent(template, templateInfo, {parent: null});\n }\n return template._templateInfo;\n }\n\n static _parseTemplateContent(template, templateInfo, nodeInfo) {\n return this._parseTemplateNode(template.content, templateInfo, nodeInfo);\n }\n\n /**\n * Parses template node and adds template and node metadata based on\n * the current node, and its `childNodes` and `attributes`.\n *\n * This method may be overridden to add custom node or template specific\n * metadata based on this node.\n *\n * @param {Node} node Node to parse\n * @param {!TemplateInfo} templateInfo Template metadata for current template\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNode(node, templateInfo, nodeInfo) {\n let noted;\n let element = /** @type {Element} */(node);\n if (element.localName == 'template' && !element.hasAttribute('preserve-content')) {\n noted = this._parseTemplateNestedTemplate(element, templateInfo, nodeInfo) || noted;\n } else if (element.localName === 'slot') {\n // For ShadyDom optimization, indicating there is an insertion point\n templateInfo.hasInsertionPoint = true;\n }\n if (element.firstChild) {\n noted = this._parseTemplateChildNodes(element, templateInfo, nodeInfo) || noted;\n }\n if (element.hasAttributes && element.hasAttributes()) {\n noted = this._parseTemplateNodeAttributes(element, templateInfo, nodeInfo) || noted;\n }\n return noted;\n }\n\n /**\n * Parses template child nodes for the given root node.\n *\n * This method also wraps whitelisted legacy template extensions\n * (`is=\"dom-if\"` and `is=\"dom-repeat\"`) with their equivalent element\n * wrappers, collapses text nodes, and strips whitespace from the template\n * if the `templateInfo.stripWhitespace` setting was provided.\n *\n * @param {Node} root Root node whose `childNodes` will be parsed\n * @param {!TemplateInfo} templateInfo Template metadata for current template\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @return {void}\n */\n static _parseTemplateChildNodes(root, templateInfo, nodeInfo) {\n if (root.localName === 'script' || root.localName === 'style') {\n return;\n }\n for (let node=root.firstChild, parentIndex=0, next; node; node=next) {\n // Wrap templates\n if (node.localName == 'template') {\n node = wrapTemplateExtension(node);\n }\n // collapse adjacent textNodes: fixes an IE issue that can cause\n // text nodes to be inexplicably split =(\n // note that root.normalize() should work but does not so we do this\n // manually.\n next = node.nextSibling;\n if (node.nodeType === Node.TEXT_NODE) {\n let /** Node */ n = next;\n while (n && (n.nodeType === Node.TEXT_NODE)) {\n node.textContent += n.textContent;\n next = n.nextSibling;\n root.removeChild(n);\n n = next;\n }\n // optionally strip whitespace\n if (templateInfo.stripWhiteSpace && !node.textContent.trim()) {\n root.removeChild(node);\n continue;\n }\n }\n let childInfo = { parentIndex, parentInfo: nodeInfo };\n if (this._parseTemplateNode(node, templateInfo, childInfo)) {\n childInfo.infoIndex = templateInfo.nodeInfoList.push(/** @type {!NodeInfo} */(childInfo)) - 1;\n }\n // Increment if not removed\n if (node.parentNode) {\n parentIndex++;\n }\n }\n }\n\n /**\n * Parses template content for the given nested ``.\n *\n * Nested template info is stored as `templateInfo` in the current node's\n * `nodeInfo`. `template.content` is removed and stored in `templateInfo`.\n * It will then be the responsibility of the host to set it back to the\n * template and for users stamping nested templates to use the\n * `_contentForTemplate` method to retrieve the content for this template\n * (an optimization to avoid the cost of cloning nested template content).\n *\n * @param {HTMLTemplateElement} node Node to parse (a )\n * @param {TemplateInfo} outerTemplateInfo Template metadata for current template\n * that includes the template `node`\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNestedTemplate(node, outerTemplateInfo, nodeInfo) {\n let templateInfo = this._parseTemplate(node, outerTemplateInfo);\n let content = templateInfo.content =\n node.content.ownerDocument.createDocumentFragment();\n content.appendChild(node.content);\n nodeInfo.templateInfo = templateInfo;\n return true;\n }\n\n /**\n * Parses template node attributes and adds node metadata to `nodeInfo`\n * for nodes of interest.\n *\n * @param {Element} node Node to parse\n * @param {TemplateInfo} templateInfo Template metadata for current template\n * @param {NodeInfo} nodeInfo Node metadata for current template.\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNodeAttributes(node, templateInfo, nodeInfo) {\n // Make copy of original attribute list, since the order may change\n // as attributes are added and removed\n let noted = false;\n let attrs = Array.from(node.attributes);\n for (let i=attrs.length-1, a; (a=attrs[i]); i--) {\n noted = this._parseTemplateNodeAttribute(node, templateInfo, nodeInfo, a.name, a.value) || noted;\n }\n return noted;\n }\n\n /**\n * Parses a single template node attribute and adds node metadata to\n * `nodeInfo` for attributes of interest.\n *\n * This implementation adds metadata for `on-event=\"handler\"` attributes\n * and `id` attributes.\n *\n * @param {Element} node Node to parse\n * @param {!TemplateInfo} templateInfo Template metadata for current template\n * @param {!NodeInfo} nodeInfo Node metadata for current template.\n * @param {string} name Attribute name\n * @param {string} value Attribute value\n * @return {boolean} `true` if the visited node added node-specific\n * metadata to `nodeInfo`\n */\n static _parseTemplateNodeAttribute(node, templateInfo, nodeInfo, name, value) {\n // events (on-*)\n if (name.slice(0, 3) === 'on-') {\n node.removeAttribute(name);\n nodeInfo.events = nodeInfo.events || [];\n nodeInfo.events.push({\n name: name.slice(3),\n value\n });\n return true;\n }\n // static id\n else if (name === 'id') {\n nodeInfo.id = value;\n return true;\n }\n return false;\n }\n\n /**\n * Returns the `content` document fragment for a given template.\n *\n * For nested templates, Polymer performs an optimization to cache nested\n * template content to avoid the cost of cloning deeply nested templates.\n * This method retrieves the cached content for a given template.\n *\n * @param {HTMLTemplateElement} template Template to retrieve `content` for\n * @return {DocumentFragment} Content fragment\n */\n static _contentForTemplate(template) {\n let templateInfo = /** @type {HTMLTemplateElementWithInfo} */ (template)._templateInfo;\n return (templateInfo && templateInfo.content) || template.content;\n }\n\n /**\n * Clones the provided template content and returns a document fragment\n * containing the cloned dom.\n *\n * The template is parsed (once and memoized) using this library's\n * template parsing features, and provides the following value-added\n * features:\n * * Adds declarative event listeners for `on-event=\"handler\"` attributes\n * * Generates an \"id map\" for all nodes with id's under `$` on returned\n * document fragment\n * * Passes template info including `content` back to templates as\n * `_templateInfo` (a performance optimization to avoid deep template\n * cloning)\n *\n * Note that the memoized template parsing process is destructive to the\n * template: attributes for bindings and declarative event listeners are\n * removed after being noted in notes, and any nested `.content`\n * is removed and stored in notes as well.\n *\n * @param {!HTMLTemplateElement} template Template to stamp\n * @return {!StampedTemplate} Cloned template content\n * @override\n */\n _stampTemplate(template) {\n // Polyfill support: bootstrap the template if it has not already been\n if (template && !template.content &&\n window.HTMLTemplateElement && HTMLTemplateElement.decorate) {\n HTMLTemplateElement.decorate(template);\n }\n let templateInfo = this.constructor._parseTemplate(template);\n let nodeInfo = templateInfo.nodeInfoList;\n let content = templateInfo.content || template.content;\n let dom = /** @type {DocumentFragment} */ (document.importNode(content, true));\n // NOTE: ShadyDom optimization indicating there is an insertion point\n dom.__noInsertionPoint = !templateInfo.hasInsertionPoint;\n let nodes = dom.nodeList = new Array(nodeInfo.length);\n dom.$ = {};\n for (let i=0, l=nodeInfo.length, info; (i-changed')\n * @param {!PropertyEffectsType} inst Host element instance handling the notification event\n * @param {string} fromProp Child element property that was bound\n * @param {string} toPath Host property/path that was bound\n * @param {boolean} negate Whether the binding was negated\n * @return {void}\n * @private\n */\nfunction handleNotification(event, inst, fromProp, toPath, negate) {\n let value;\n let detail = /** @type {Object} */(event.detail);\n let fromPath = detail && detail.path;\n if (fromPath) {\n toPath = translate(fromProp, toPath, fromPath);\n value = detail && detail.value;\n } else {\n value = event.currentTarget[fromProp];\n }\n value = negate ? !value : value;\n if (!inst[TYPES.READ_ONLY] || !inst[TYPES.READ_ONLY][toPath]) {\n if (inst._setPendingPropertyOrPath(toPath, value, true, Boolean(fromPath))\n && (!detail || !detail.queueProperty)) {\n inst._invalidateProperties();\n }\n }\n}\n\n/**\n * Implements the \"reflect\" effect.\n *\n * Sets the attribute named `info.attrName` to the given property value.\n *\n * @param {!PropertyEffectsType} inst The instance the effect will be run on\n * @param {string} property Name of property\n * @param {Object} props Bag of current property changes\n * @param {Object} oldProps Bag of previous values for changed properties\n * @param {?} info Effect metadata\n * @return {void}\n * @private\n */\nfunction runReflectEffect(inst, property, props, oldProps, info) {\n let value = inst.__data[property];\n if (sanitizeDOMValue) {\n value = sanitizeDOMValue(value, info.attrName, 'attribute', /** @type {Node} */(inst));\n }\n inst._propertyToAttribute(property, info.attrName, value);\n}\n\n/**\n * Runs \"computed\" effects for a set of changed properties.\n *\n * This method differs from the generic `runEffects` method in that it\n * continues to run computed effects based on the output of each pass until\n * there are no more newly computed properties. This ensures that all\n * properties that will be computed by the initial set of changes are\n * computed before other effects (binding propagation, observers, and notify)\n * run.\n *\n * @param {!PropertyEffectsType} inst The instance the effect will be run on\n * @param {!Object} changedProps Bag of changed properties\n * @param {!Object} oldProps Bag of previous values for changed properties\n * @param {boolean} hasPaths True with `props` contains one or more paths\n * @return {void}\n * @private\n */\nfunction runComputedEffects(inst, changedProps, oldProps, hasPaths) {\n let computeEffects = inst[TYPES.COMPUTE];\n if (computeEffects) {\n let inputProps = changedProps;\n while (runEffects(inst, computeEffects, inputProps, oldProps, hasPaths)) {\n Object.assign(oldProps, inst.__dataOld);\n Object.assign(changedProps, inst.__dataPending);\n inputProps = inst.__dataPending;\n inst.__dataPending = null;\n }\n }\n}\n\n/**\n * Implements the \"computed property\" effect by running the method with the\n * values of the arguments specified in the `info` object and setting the\n * return value to the computed property specified.\n *\n * @param {!PropertyEffectsType} inst The instance the effect will be run on\n * @param {string} property Name of property\n * @param {Object} props Bag of current property changes\n * @param {Object} oldProps Bag of previous values for changed properties\n * @param {?} info Effect metadata\n * @return {void}\n * @private\n */\nfunction runComputedEffect(inst, property, props, oldProps, info) {\n let result = runMethodEffect(inst, property, props, oldProps, info);\n let computedProp = info.methodInfo;\n if (inst.__dataHasAccessor && inst.__dataHasAccessor[computedProp]) {\n inst._setPendingProperty(computedProp, result, true);\n } else {\n inst[computedProp] = result;\n }\n}\n\n/**\n * Computes path changes based on path links set up using the `linkPaths`\n * API.\n *\n * @param {!PropertyEffectsType} inst The instance whose props are changing\n * @param {string | !Array<(string|number)>} path Path that has changed\n * @param {*} value Value of changed path\n * @return {void}\n * @private\n */\nfunction computeLinkedPaths(inst, path, value) {\n let links = inst.__dataLinkedPaths;\n if (links) {\n let link;\n for (let a in links) {\n let b = links[a];\n if (isDescendant(a, path)) {\n link = translate(a, b, path);\n inst._setPendingPropertyOrPath(link, value, true, true);\n } else if (isDescendant(b, path)) {\n link = translate(b, a, path);\n inst._setPendingPropertyOrPath(link, value, true, true);\n }\n }\n }\n}\n\n// -- bindings ----------------------------------------------\n\n/**\n * Adds binding metadata to the current `nodeInfo`, and binding effects\n * for all part dependencies to `templateInfo`.\n *\n * @param {Function} constructor Class that `_parseTemplate` is currently\n * running on\n * @param {TemplateInfo} templateInfo Template metadata for current template\n * @param {NodeInfo} nodeInfo Node metadata for current template node\n * @param {string} kind Binding kind, either 'property', 'attribute', or 'text'\n * @param {string} target Target property name\n * @param {!Array} parts Array of binding part metadata\n * @param {string=} literal Literal text surrounding binding parts (specified\n * only for 'property' bindings, since these must be initialized as part\n * of boot-up)\n * @return {void}\n * @private\n */\nfunction addBinding(constructor, templateInfo, nodeInfo, kind, target, parts, literal) {\n // Create binding metadata and add to nodeInfo\n nodeInfo.bindings = nodeInfo.bindings || [];\n let /** Binding */ binding = { kind, target, parts, literal, isCompound: (parts.length !== 1) };\n nodeInfo.bindings.push(binding);\n // Add listener info to binding metadata\n if (shouldAddListener(binding)) {\n let {event, negate} = binding.parts[0];\n binding.listenerEvent = event || (camelToDashCase(target) + '-changed');\n binding.listenerNegate = negate;\n }\n // Add \"propagate\" property effects to templateInfo\n let index = templateInfo.nodeInfoList.length;\n for (let i=0; i part.source.length) &&\n (binding.kind == 'property') && !binding.isCompound &&\n node.__isPropertyEffectsClient &&\n node.__dataHasAccessor && node.__dataHasAccessor[binding.target]) {\n let value = props[path];\n path = translate(part.source, binding.target, path);\n if (node._setPendingPropertyOrPath(path, value, false, true)) {\n inst._enqueueClient(node);\n }\n } else {\n let value = info.evaluator._evaluateBinding(inst, part, path, props, oldProps, hasPaths);\n // Propagate value to child\n applyBindingValue(inst, node, binding, part, value);\n }\n}\n\n/**\n * Sets the value for an \"binding\" (binding) effect to a node,\n * either as a property or attribute.\n *\n * @param {!PropertyEffectsType} inst The instance owning the binding effect\n * @param {Node} node Target node for binding\n * @param {!Binding} binding Binding metadata\n * @param {!BindingPart} part Binding part metadata\n * @param {*} value Value to set\n * @return {void}\n * @private\n */\nfunction applyBindingValue(inst, node, binding, part, value) {\n value = computeBindingValue(node, value, binding, part);\n if (sanitizeDOMValue) {\n value = sanitizeDOMValue(value, binding.target, binding.kind, node);\n }\n if (binding.kind == 'attribute') {\n // Attribute binding\n inst._valueToNodeAttribute(/** @type {Element} */(node), value, binding.target);\n } else {\n // Property binding\n let prop = binding.target;\n if (node.__isPropertyEffectsClient &&\n node.__dataHasAccessor && node.__dataHasAccessor[prop]) {\n if (!node[TYPES.READ_ONLY] || !node[TYPES.READ_ONLY][prop]) {\n if (node._setPendingProperty(prop, value)) {\n inst._enqueueClient(node);\n }\n }\n } else {\n inst._setUnmanagedPropertyToNode(node, prop, value);\n }\n }\n}\n\n/**\n * Transforms an \"binding\" effect value based on compound & negation\n * effect metadata, as well as handling for special-case properties\n *\n * @param {Node} node Node the value will be set to\n * @param {*} value Value to set\n * @param {!Binding} binding Binding metadata\n * @param {!BindingPart} part Binding part metadata\n * @return {*} Transformed value to set\n * @private\n */\nfunction computeBindingValue(node, value, binding, part) {\n if (binding.isCompound) {\n let storage = node.__dataCompoundStorage[binding.target];\n storage[part.compoundIndex] = value;\n value = storage.join('');\n }\n if (binding.kind !== 'attribute') {\n // Some browsers serialize `undefined` to `\"undefined\"`\n if (binding.target === 'textContent' ||\n (binding.target === 'value' &&\n (node.localName === 'input' || node.localName === 'textarea'))) {\n value = value == undefined ? '' : value;\n }\n }\n return value;\n}\n\n/**\n * Returns true if a binding's metadata meets all the requirements to allow\n * 2-way binding, and therefore a `-changed` event listener should be\n * added:\n * - used curly braces\n * - is a property (not attribute) binding\n * - is not a textContent binding\n * - is not compound\n *\n * @param {!Binding} binding Binding metadata\n * @return {boolean} True if 2-way listener should be added\n * @private\n */\nfunction shouldAddListener(binding) {\n return Boolean(binding.target) &&\n binding.kind != 'attribute' &&\n binding.kind != 'text' &&\n !binding.isCompound &&\n binding.parts[0].mode === '{';\n}\n\n/**\n * Setup compound binding storage structures, notify listeners, and dataHost\n * references onto the bound nodeList.\n *\n * @param {!PropertyEffectsType} inst Instance that bas been previously bound\n * @param {TemplateInfo} templateInfo Template metadata\n * @return {void}\n * @private\n */\nfunction setupBindings(inst, templateInfo) {\n // Setup compound storage, dataHost, and notify listeners\n let {nodeList, nodeInfoList} = templateInfo;\n if (nodeInfoList.length) {\n for (let i=0; i < nodeInfoList.length; i++) {\n let info = nodeInfoList[i];\n let node = nodeList[i];\n let bindings = info.bindings;\n if (bindings) {\n for (let i=0; i} parts All parts to stringify\n * @return {string} String made from the literal parts\n */\nfunction literalFromParts(parts) {\n let s = '';\n for (let i=0; i} argList Array of argument names\n * @param {!MethodSignature} sig Method signature metadata object\n * @return {!MethodSignature} The updated signature metadata object\n * @private\n */\nfunction parseArgs(argList, sig) {\n sig.args = argList.map(function(rawArg) {\n let arg = parseArg(rawArg);\n if (!arg.literal) {\n sig.static = false;\n }\n return arg;\n }, this);\n return sig;\n}\n\n/**\n * Parses an individual argument, and returns an argument metadata object\n * with the following fields:\n *\n * {\n * value: 'prop', // property/path or literal value\n * literal: false, // whether argument is a literal\n * structured: false, // whether the property is a path\n * rootProperty: 'prop', // the root property of the path\n * wildcard: false // whether the argument was a wildcard '.*' path\n * }\n *\n * @param {string} rawArg The string value of the argument\n * @return {!MethodArg} Argument metadata object\n * @private\n */\nfunction parseArg(rawArg) {\n // clean up whitespace\n let arg = rawArg.trim()\n // replace comma entity with comma\n .replace(/,/g, ',')\n // repair extra escape sequences; note only commas strictly need\n // escaping, but we allow any other char to be escaped since its\n // likely users will do this\n .replace(/\\\\(.)/g, '\\$1')\n ;\n // basic argument descriptor\n let a = {\n name: arg,\n value: '',\n literal: false\n };\n // detect literal value (must be String or Number)\n let fc = arg[0];\n if (fc === '-') {\n fc = arg[1];\n }\n if (fc >= '0' && fc <= '9') {\n fc = '#';\n }\n switch(fc) {\n case \"'\":\n case '\"':\n a.value = arg.slice(1, -1);\n a.literal = true;\n break;\n case '#':\n a.value = Number(arg);\n a.literal = true;\n break;\n }\n // if not literal, look for structured path\n if (!a.literal) {\n a.rootProperty = root(arg);\n // detect structured path (has dots)\n a.structured = isPath(arg);\n if (a.structured) {\n a.wildcard = (arg.slice(-2) == '.*');\n if (a.wildcard) {\n a.name = arg.slice(0, -2);\n }\n }\n }\n return a;\n}\n\n// data api\n\n/**\n * Sends array splice notifications (`.splices` and `.length`)\n *\n * Note: this implementation only accepts normalized paths\n *\n * @param {!PropertyEffectsType} inst Instance to send notifications to\n * @param {Array} array The array the mutations occurred on\n * @param {string} path The path to the array that was mutated\n * @param {Array} splices Array of splice records\n * @return {void}\n * @private\n */\nfunction notifySplices(inst, array, path, splices) {\n let splicesPath = path + '.splices';\n inst.notifyPath(splicesPath, { indexSplices: splices });\n inst.notifyPath(path + '.length', array.length);\n // Null here to allow potentially large splice records to be GC'ed.\n inst.__data[splicesPath] = {indexSplices: null};\n}\n\n/**\n * Creates a splice record and sends an array splice notification for\n * the described mutation\n *\n * Note: this implementation only accepts normalized paths\n *\n * @param {!PropertyEffectsType} inst Instance to send notifications to\n * @param {Array} array The array the mutations occurred on\n * @param {string} path The path to the array that was mutated\n * @param {number} index Index at which the array mutation occurred\n * @param {number} addedCount Number of added items\n * @param {Array} removed Array of removed items\n * @return {void}\n * @private\n */\nfunction notifySplice(inst, array, path, index, addedCount, removed) {\n notifySplices(inst, array, path, [{\n index: index,\n addedCount: addedCount,\n removed: removed,\n object: array,\n type: 'splice'\n }]);\n}\n\n/**\n * Returns an upper-cased version of the string.\n *\n * @param {string} name String to uppercase\n * @return {string} Uppercased string\n * @private\n */\nfunction upper(name) {\n return name[0].toUpperCase() + name.substring(1);\n}\n\n/**\n * Element class mixin that provides meta-programming for Polymer's template\n * binding and data observation (collectively, \"property effects\") system.\n *\n * This mixin uses provides the following key static methods for adding\n * property effects to an element class:\n * - `addPropertyEffect`\n * - `createPropertyObserver`\n * - `createMethodObserver`\n * - `createNotifyingProperty`\n * - `createReadOnlyProperty`\n * - `createReflectedProperty`\n * - `createComputedProperty`\n * - `bindTemplate`\n *\n * Each method creates one or more property accessors, along with metadata\n * used by this mixin's implementation of `_propertiesChanged` to perform\n * the property effects.\n *\n * Underscored versions of the above methods also exist on the element\n * prototype for adding property effects on instances at runtime.\n *\n * Note that this mixin overrides several `PropertyAccessors` methods, in\n * many cases to maintain guarantees provided by the Polymer 1.x features;\n * notably it changes property accessors to be synchronous by default\n * whereas the default when using `PropertyAccessors` standalone is to be\n * async by default.\n *\n * @mixinFunction\n * @polymer\n * @appliesMixin TemplateStamp\n * @appliesMixin PropertyAccessors\n * @summary Element class mixin that provides meta-programming for Polymer's\n * template binding and data observation system.\n */\nexport const PropertyEffects = dedupingMixin(superClass => {\n\n /**\n * @constructor\n * @extends {superClass}\n * @implements {Polymer_PropertyAccessors}\n * @implements {Polymer_TemplateStamp}\n * @unrestricted\n * @private\n */\n const propertyEffectsBase = TemplateStamp(PropertyAccessors(superClass));\n\n /**\n * @polymer\n * @mixinClass\n * @implements {Polymer_PropertyEffects}\n * @extends {propertyEffectsBase}\n * @unrestricted\n */\n class PropertyEffects extends propertyEffectsBase {\n\n constructor() {\n super();\n /** @type {boolean} */\n // Used to identify users of this mixin, ala instanceof\n this.__isPropertyEffectsClient = true;\n /** @type {number} */\n // NOTE: used to track re-entrant calls to `_flushProperties`\n // path changes dirty check against `__dataTemp` only during one \"turn\"\n // and are cleared when `__dataCounter` returns to 0.\n this.__dataCounter = 0;\n /** @type {boolean} */\n this.__dataClientsReady;\n /** @type {Array} */\n this.__dataPendingClients;\n /** @type {Object} */\n this.__dataToNotify;\n /** @type {Object} */\n this.__dataLinkedPaths;\n /** @type {boolean} */\n this.__dataHasPaths;\n /** @type {Object} */\n this.__dataCompoundStorage;\n /** @type {Polymer_PropertyEffects} */\n this.__dataHost;\n /** @type {!Object} */\n this.__dataTemp;\n /** @type {boolean} */\n this.__dataClientsInitialized;\n /** @type {!Object} */\n this.__data;\n /** @type {!Object} */\n this.__dataPending;\n /** @type {!Object} */\n this.__dataOld;\n /** @type {Object} */\n this.__computeEffects;\n /** @type {Object} */\n this.__reflectEffects;\n /** @type {Object} */\n this.__notifyEffects;\n /** @type {Object} */\n this.__propagateEffects;\n /** @type {Object} */\n this.__observeEffects;\n /** @type {Object} */\n this.__readOnly;\n /** @type {!TemplateInfo} */\n this.__templateInfo;\n }\n\n get PROPERTY_EFFECT_TYPES() {\n return TYPES;\n }\n\n /**\n * @return {void}\n */\n _initializeProperties() {\n super._initializeProperties();\n hostStack.registerHost(this);\n this.__dataClientsReady = false;\n this.__dataPendingClients = null;\n this.__dataToNotify = null;\n this.__dataLinkedPaths = null;\n this.__dataHasPaths = false;\n // May be set on instance prior to upgrade\n this.__dataCompoundStorage = this.__dataCompoundStorage || null;\n this.__dataHost = this.__dataHost || null;\n this.__dataTemp = {};\n this.__dataClientsInitialized = false;\n }\n\n /**\n * Overrides `PropertyAccessors` implementation to provide a\n * more efficient implementation of initializing properties from\n * the prototype on the instance.\n *\n * @override\n * @param {Object} props Properties to initialize on the prototype\n * @return {void}\n */\n _initializeProtoProperties(props) {\n this.__data = Object.create(props);\n this.__dataPending = Object.create(props);\n this.__dataOld = {};\n }\n\n /**\n * Overrides `PropertyAccessors` implementation to avoid setting\n * `_setProperty`'s `shouldNotify: true`.\n *\n * @override\n * @param {Object} props Properties to initialize on the instance\n * @return {void}\n */\n _initializeInstanceProperties(props) {\n let readOnly = this[TYPES.READ_ONLY];\n for (let prop in props) {\n if (!readOnly || !readOnly[prop]) {\n this.__dataPending = this.__dataPending || {};\n this.__dataOld = this.__dataOld || {};\n this.__data[prop] = this.__dataPending[prop] = props[prop];\n }\n }\n }\n\n // Prototype setup ----------------------------------------\n\n /**\n * Equivalent to static `addPropertyEffect` API but can be called on\n * an instance to add effects at runtime. See that method for\n * full API docs.\n *\n * @param {string} property Property that should trigger the effect\n * @param {string} type Effect type, from this.PROPERTY_EFFECT_TYPES\n * @param {Object=} effect Effect metadata object\n * @return {void}\n * @protected\n */\n _addPropertyEffect(property, type, effect) {\n this._createPropertyAccessor(property, type == TYPES.READ_ONLY);\n // effects are accumulated into arrays per property based on type\n let effects = ensureOwnEffectMap(this, type)[property];\n if (!effects) {\n effects = this[type][property] = [];\n }\n effects.push(effect);\n }\n\n /**\n * Removes the given property effect.\n *\n * @param {string} property Property the effect was associated with\n * @param {string} type Effect type, from this.PROPERTY_EFFECT_TYPES\n * @param {Object=} effect Effect metadata object to remove\n * @return {void}\n */\n _removePropertyEffect(property, type, effect) {\n let effects = ensureOwnEffectMap(this, type)[property];\n let idx = effects.indexOf(effect);\n if (idx >= 0) {\n effects.splice(idx, 1);\n }\n }\n\n /**\n * Returns whether the current prototype/instance has a property effect\n * of a certain type.\n *\n * @param {string} property Property name\n * @param {string=} type Effect type, from this.PROPERTY_EFFECT_TYPES\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasPropertyEffect(property, type) {\n let effects = this[type];\n return Boolean(effects && effects[property]);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"read only\"\n * accessor for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasReadOnlyEffect(property) {\n return this._hasPropertyEffect(property, TYPES.READ_ONLY);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"notify\"\n * property effect for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasNotifyEffect(property) {\n return this._hasPropertyEffect(property, TYPES.NOTIFY);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"reflect to attribute\"\n * property effect for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasReflectEffect(property) {\n return this._hasPropertyEffect(property, TYPES.REFLECT);\n }\n\n /**\n * Returns whether the current prototype/instance has a \"computed\"\n * property effect for the given property.\n *\n * @param {string} property Property name\n * @return {boolean} True if the prototype/instance has an effect of this type\n * @protected\n */\n _hasComputedEffect(property) {\n return this._hasPropertyEffect(property, TYPES.COMPUTE);\n }\n\n // Runtime ----------------------------------------\n\n /**\n * Sets a pending property or path. If the root property of the path in\n * question had no accessor, the path is set, otherwise it is enqueued\n * via `_setPendingProperty`.\n *\n * This function isolates relatively expensive functionality necessary\n * for the public API (`set`, `setProperties`, `notifyPath`, and property\n * change listeners via {{...}} bindings), such that it is only done\n * when paths enter the system, and not at every propagation step. It\n * also sets a `__dataHasPaths` flag on the instance which is used to\n * fast-path slower path-matching code in the property effects host paths.\n *\n * `path` can be a path string or array of path parts as accepted by the\n * public API.\n *\n * @param {string | !Array} path Path to set\n * @param {*} value Value to set\n * @param {boolean=} shouldNotify Set to true if this change should\n * cause a property notification event dispatch\n * @param {boolean=} isPathNotification If the path being set is a path\n * notification of an already changed value, as opposed to a request\n * to set and notify the change. In the latter `false` case, a dirty\n * check is performed and then the value is set to the path before\n * enqueuing the pending property change.\n * @return {boolean} Returns true if the property/path was enqueued in\n * the pending changes bag.\n * @protected\n */\n _setPendingPropertyOrPath(path, value, shouldNotify, isPathNotification) {\n if (isPathNotification ||\n root(Array.isArray(path) ? path[0] : path) !== path) {\n // Dirty check changes being set to a path against the actual object,\n // since this is the entry point for paths into the system; from here\n // the only dirty checks are against the `__dataTemp` cache to prevent\n // duplicate work in the same turn only. Note, if this was a notification\n // of a change already set to a path (isPathNotification: true),\n // we always let the change through and skip the `set` since it was\n // already dirty checked at the point of entry and the underlying\n // object has already been updated\n if (!isPathNotification) {\n let old = get(this, path);\n path = /** @type {string} */ (set(this, path, value));\n // Use property-accessor's simpler dirty check\n if (!path || !super._shouldPropertyChange(path, value, old)) {\n return false;\n }\n }\n this.__dataHasPaths = true;\n if (this._setPendingProperty(/**@type{string}*/(path), value, shouldNotify)) {\n computeLinkedPaths(this, path, value);\n return true;\n }\n } else {\n if (this.__dataHasAccessor && this.__dataHasAccessor[path]) {\n return this._setPendingProperty(/**@type{string}*/(path), value, shouldNotify);\n } else {\n this[path] = value;\n }\n }\n return false;\n }\n\n /**\n * Applies a value to a non-Polymer element/node's property.\n *\n * The implementation makes a best-effort at binding interop:\n * Some native element properties have side-effects when\n * re-setting the same value (e.g. setting `.value` resets the\n * cursor position), so we do a dirty-check before setting the value.\n * However, for better interop with non-Polymer custom elements that\n * accept objects, we explicitly re-set object changes coming from the\n * Polymer world (which may include deep object changes without the\n * top reference changing), erring on the side of providing more\n * information.\n *\n * Users may override this method to provide alternate approaches.\n *\n * @param {!Node} node The node to set a property on\n * @param {string} prop The property to set\n * @param {*} value The value to set\n * @return {void}\n * @protected\n */\n _setUnmanagedPropertyToNode(node, prop, value) {\n // It is a judgment call that resetting primitives is\n // \"bad\" and resettings objects is also \"good\"; alternatively we could\n // implement a whitelist of tag & property values that should never\n // be reset (e.g. .value &&
\n *