Fix new script/automation dialog

* yaml / visual part 2

* clean up

* ci

.browserslistrc

@@ -4,13 +4,12 @@
 # - released in the last year + current alpha/beta versions
 # - Firefox extended support release (ESR)
 # - with global utilization at or above 0.5%
-# - must support dynamic import of ES modules
-# - exclude browsers no longer being maintained
+# - exclude dead browsers (no security maintenance for 2+ years)
 # - exclude KaiOS, QQ, and UC browsers due to lack of sufficient feature support data
 unreleased versions
 last 1 year
 Firefox ESR
->= 0.5% and supports es6-module-dynamic-import
+>= 0.5%
 not dead
 not KaiOS > 0
 not QQAndroid > 0
@@ -20,23 +19,18 @@ not UCAndroid > 0
 # Legacy builds are served when modern requirements are not met and support browsers:
 # - released in the last 7 years + current alpha/beta versionss
 # - with global utilization at or above 0.05%
-# The lattermost query ensures that support for popular old browsers is not dropped too early
-# (e.g. IE 11, Android 4.4, or Samsung 4).
-#
-# In addition, legacy browsers must support some minimum features that cannot be polyfilled:
-# - ES5 (strict mode)
-# - web sockets to communicate with backend
-# - inline SVG used widely in buttons, widgets, etc.
-# - custom events used for most user interactions
-# - CSS flexbox used in the majority of the layout
-# Nearly all of these are redundant with the above rules.
-# As of May 2023, only web sockets must be added to the query.
+# - exclude dead browsers (no security maintenance for 2+ years)
+# - exclude Opera Mini which does not support web sockets
 unreleased versions
 last 7 years
->= 0.05% and supports websockets
+>= 0.05%
+not dead
+not op_mini all
 
 [legacy-sw]
 # Same as legacy plus supports service workers
 unreleased versions
 last 7 years
->= 0.05% and supports websockets and supports serviceworkers
+>= 0.05% and supports serviceworkers
+not dead
+not op_mini all

.github/workflows/ci.yaml

@@ -31,7 +31,7 @@ jobs:
         with:
           node-version-file: ".nvmrc"
           cache: yarn
-      - uses: actions/cache@v4.1.2
+      - uses: actions/cache@v4.2.0
         id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
           path: "node_modules"
@@ -43,7 +43,7 @@ jobs:
       - name: Build resources
         run: ./node_modules/.bin/gulp gen-icons-json build-translations build-locale-data gather-gallery-pages
       - name: Setup lint cache
-        uses: actions/cache@v4.1.2
+        uses: actions/cache@v4.2.0
         with:
           path: |
             node_modules/.cache/prettier
@@ -71,7 +71,7 @@ jobs:
         with:
           node-version-file: ".nvmrc"
           cache: yarn
-      - uses: actions/cache@v4.1.2
+      - uses: actions/cache@v4.2.0
         id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
           path: "node_modules"
@@ -97,7 +97,7 @@ jobs:
         with:
           node-version-file: ".nvmrc"
           cache: yarn
-      - uses: actions/cache@v4.1.2
+      - uses: actions/cache@v4.2.0
         id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
           path: "node_modules"
@@ -129,7 +129,7 @@ jobs:
         with:
           node-version-file: ".nvmrc"
           cache: yarn
-      - uses: actions/cache@v4.1.2
+      - uses: actions/cache@v4.2.0
         id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
           path: "node_modules"

.github/workflows/relative-ci.yaml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Send bundle stats and build information to RelativeCI
-        uses: relative-ci/agent-action@v2.1.13
+        uses: relative-ci/agent-action@v2.1.14
         with:
           key: ${{ secrets[format('RELATIVE_CI_KEY_{0}_{1}', matrix.bundle, matrix.build)] }}
           token: ${{ github.token }}

.github/workflows/release.yaml

@@ -4,7 +4,6 @@ on:
   release:
     types:
       - published
-  workflow_dispatch:
 
 env:
   PYTHON_VERSION: "3.12"
@@ -82,3 +81,61 @@ jobs:
           arch: amd64
           wheels-key: ${{ secrets.WHEELS_KEY }}
           requirements: "requirements.txt"
+
+  release-landing-page:
+    name: Release landing-page frontend
+    if: github.event.release.prerelease == false
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Required to upload release assets
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.2.2
+      - name: Setup Node
+        uses: actions/setup-node@v4.1.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+      - name: Install dependencies
+        run: yarn install
+      - name: Download Translations
+        run: ./script/translations_download
+        env:
+          LOKALISE_TOKEN: ${{ secrets.LOKALISE_TOKEN }}
+      - name: Build landing-page
+        run: landing-page/script/build_landing_page
+      - name: Tar folder
+        run: tar -czf landing-page/home_assistant_frontend_landingpage-${{ github.event.release.tag_name }}.tar.gz -C landing-page/dist .
+      - name: Upload release asset
+        uses: softprops/action-gh-release@v2.1.0
+        with:
+          files: landing-page/home_assistant_frontend_landingpage-${{ github.event.release.tag_name }}.tar.gz
+
+  release-supervisor:
+    name: Release supervisor frontend
+    if: github.event.release.prerelease == false
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Required to upload release assets
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.2.2
+      - name: Setup Node
+        uses: actions/setup-node@v4.1.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+      - name: Install dependencies
+        run: yarn install
+      - name: Download Translations
+        run: ./script/translations_download
+        env:
+          LOKALISE_TOKEN: ${{ secrets.LOKALISE_TOKEN }}
+      - name: Build supervisor
+        run: hassio/script/build_hassio
+      - name: Tar folder
+        run: tar -czf hassio/home_assistant_frontend_supervisor-${{ github.event.release.tag_name }}.tar.gz -C hassio/build .
+      - name: Upload release asset
+        uses: softprops/action-gh-release@v2.1.0
+        with:
+          files: hassio/home_assistant_frontend_supervisor-${{ github.event.release.tag_name }}.tar.gz

.yarnrc.yml

@@ -6,4 +6,4 @@ enableGlobalCache: false
 
 nodeLinker: node-modules
 
-yarnPath: .yarn/releases/yarn-4.5.2.cjs
+yarnPath: .yarn/releases/yarn-4.5.3.cjs

build-scripts/bundle.cjs

@@ -53,6 +53,11 @@ module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
   __SUPERVISOR__: false,
   __BACKWARDS_COMPAT__: false,
   __STATIC_PATH__: "/static/",
+  __HASS_URL__: `\`${
+    "HASS_URL" in process.env
+      ? process.env["HASS_URL"]
+      : "${location.protocol}//${location.host}"
+  }\``,
   "process.env.NODE_ENV": JSON.stringify(
     isProdBuild ? "production" : "development"
   ),

build-scripts/env.cjs

@@ -5,9 +5,6 @@ const paths = require("./paths.cjs");
 const isTrue = (value) => value === "1" || value?.toLowerCase() === "true";
 
 module.exports = {
-  useWDS() {
-    return isTrue(process.env.WDS);
-  },
   isProdBuild() {
     return (
       process.env.NODE_ENV === "production" || module.exports.isStatsBuild()

build-scripts/gulp/app.js

@@ -8,7 +8,6 @@ import "./gen-icons-json.js";
 import "./locale-data.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./wds.js";
 import "./rspack.js";
 
 gulp.task(
@@ -26,7 +25,7 @@ gulp.task(
       "build-locale-data"
     ),
     "copy-static-app",
-    env.useWDS() ? "wds-watch-app" : "rspack-watch-app"
+    "rspack-watch-app"
   )
 );
 

build-scripts/gulp/compress.js

@@ -3,7 +3,6 @@
 import { constants } from "node:zlib";
 import gulp from "gulp";
 import brotli from "gulp-brotli";
-import zopfli from "gulp-zopfli-green";
 import paths from "../paths.cjs";
 
 const filesGlob = "*.{js,json,css,svg,xml}";
@@ -13,7 +12,6 @@ const brotliOptions = {
     [constants.BROTLI_PARAM_QUALITY]: constants.BROTLI_MAX_QUALITY,
   },
 };
-const zopfliOptions = { threshold: 150 };
 
 const compressDistBrotli = (rootDir, modernDir, compressServiceWorker = true) =>
   gulp
@@ -29,20 +27,6 @@ const compressDistBrotli = (rootDir, modernDir, compressServiceWorker = true) =>
     .pipe(brotli(brotliOptions))
     .pipe(gulp.dest(rootDir));
 
-const compressDistZopfli = (rootDir, modernDir, compressModern = false) =>
-  gulp
-    .src(
-      [
-        `${rootDir}/**/${filesGlob}`,
-        compressModern ? undefined : `!${modernDir}/**/${filesGlob}`,
-        `!${rootDir}/{sw-modern,service_worker}.js`,
-        `${rootDir}/{authorize,onboarding}.html`,
-      ].filter(Boolean),
-      { base: rootDir }
-    )
-    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(rootDir));
-
 const compressAppBrotli = () =>
   compressDistBrotli(paths.app_output_root, paths.app_output_latest);
 const compressHassioBrotli = () =>
@@ -52,17 +36,5 @@ const compressHassioBrotli = () =>
     false
   );
 
-const compressAppZopfli = () =>
-  compressDistZopfli(paths.app_output_root, paths.app_output_latest);
-const compressHassioZopfli = () =>
-  compressDistZopfli(
-    paths.hassio_output_root,
-    paths.hassio_output_latest,
-    true
-  );
-
-gulp.task("compress-app", gulp.parallel(compressAppBrotli, compressAppZopfli));
-gulp.task(
-  "compress-hassio",
-  gulp.parallel(compressHassioBrotli, compressHassioZopfli)
-);
+gulp.task("compress-app", compressAppBrotli);
+gulp.task("compress-hassio", compressHassioBrotli);

build-scripts/gulp/entry-html.js

@@ -11,7 +11,6 @@ import { minify } from "html-minifier-terser";
 import template from "lodash.template";
 import { dirname, extname, resolve } from "node:path";
 import { htmlMinifierOptions, terserOptions } from "../bundle.cjs";
-import env from "../env.cjs";
 import paths from "../paths.cjs";
 
 // macOS companion app has no way to obtain the Safari version used by WKWebView,
@@ -56,7 +55,6 @@ const getCommonTemplateVars = () => {
     { ignorePatch: true, allowHigherVersions: true }
   );
   return {
-    useWDS: env.useWDS(),
     modernRegex: compileRegex(browserRegexes.concat(haMacOSRegex)).toString(),
   };
 };
@@ -92,13 +90,11 @@ const minifyHtml = (content, ext) => {
 };
 
 // Function to generate a dev task for each project's configuration
-// Note Currently WDS paths are hard-coded to only work for app
 const genPagesDevTask =
   (
     pageEntries,
     inputRoot,
     outputRoot,
-    useWDS = false,
     inputSub = "src/html",
     publicRoot = ""
   ) =>
@@ -109,17 +105,13 @@ const genPagesDevTask =
         resolve(inputRoot, inputSub, `${page}.template`),
         {
           ...commonVars,
-          latestEntryJS: entries.map((entry) =>
-            useWDS
-              ? `http://localhost:8000/src/entrypoints/${entry}.ts`
-              : `${publicRoot}/frontend_latest/${entry}.js`
+          latestEntryJS: entries.map(
+            (entry) => `${publicRoot}/frontend_latest/${entry}.js`
           ),
           es5EntryJS: entries.map(
             (entry) => `${publicRoot}/frontend_es5/${entry}.js`
           ),
-          latestCustomPanelJS: useWDS
-            ? "http://localhost:8000/src/entrypoints/custom-panel.ts"
-            : `${publicRoot}/frontend_latest/custom-panel.js`,
+          latestCustomPanelJS: `${publicRoot}/frontend_latest/custom-panel.js`,
           es5CustomPanelJS: `${publicRoot}/frontend_es5/custom-panel.js`,
         }
       );
@@ -176,12 +168,7 @@ const APP_PAGE_ENTRIES = {
 
 gulp.task(
   "gen-pages-app-dev",
-  genPagesDevTask(
-    APP_PAGE_ENTRIES,
-    paths.polymer_dir,
-    paths.app_output_root,
-    env.useWDS()
-  )
+  genPagesDevTask(APP_PAGE_ENTRIES, paths.polymer_dir, paths.app_output_root)
 );
 
 gulp.task(
@@ -287,7 +274,6 @@ gulp.task(
     HASSIO_PAGE_ENTRIES,
     paths.hassio_dir,
     paths.hassio_output_root,
-    undefined,
     "src",
     paths.hassio_publicPath
   )

build-scripts/gulp/fetch-nightly-translations.js

@@ -66,7 +66,7 @@ gulp.task("fetch-nightly-translations", async function () {
       tokenAuth = JSON.parse(await readFile(TOKEN_FILE, "utf-8"));
     } catch {
       if (!allowTokenSetup) {
-        console.log("No token found so  build wil continue with English only");
+        console.log("No token found so build will continue with English only");
         return;
       }
       const auth = createOAuthDeviceAuth({

build-scripts/gulp/locale-data.js

@@ -9,7 +9,6 @@ const outDir = join(paths.build_dir, "locale-data");
 
 const INTL_POLYFILLS = {
   "intl-datetimeformat": "DateTimeFormat",
-  "intl-durationFormat": "DurationFormat",
   "intl-displaynames": "DisplayNames",
   "intl-listformat": "ListFormat",
   "intl-numberformat": "NumberFormat",

build-scripts/gulp/wds.js

@@ -1,10 +0,0 @@
-import gulp from "gulp";
-import { startDevServer } from "@web/dev-server";
-
-gulp.task("wds-watch-app", async () => {
-  startDevServer({
-    config: {
-      watch: true,
-    },
-  });
-});

cast/src/receiver/layout/hc-lovelace.ts

@@ -25,9 +25,9 @@ class HcLovelace extends LitElement {
   @property({ attribute: false })
   public lovelaceConfig!: LovelaceConfig;
 
-  @property() public viewPath?: string | number | null;
+  @property({ attribute: false }) public viewPath?: string | number | null;
 
-  @property() public urlPath: string | null = null;
+  @property({ attribute: false }) public urlPath: string | null = null;
 
   protected render(): TemplateResult {
     const index = this._viewIndex;

cast/src/receiver/layout/hc-main.ts

@@ -144,10 +144,10 @@ export class HcMain extends HassElement {
     }
 
     if (senderId) {
-      this.sendMessage(senderId, status);
+      this._sendMessage(senderId, status);
     } else {
       for (const sender of castContext.getSenders()) {
-        this.sendMessage(sender.id, status);
+        this._sendMessage(sender.id, status);
       }
     }
   }
@@ -164,10 +164,10 @@ export class HcMain extends HassElement {
     };
 
     if (senderId) {
-      this.sendMessage(senderId, error);
+      this._sendMessage(senderId, error);
     } else {
       for (const sender of castContext.getSenders()) {
-        this.sendMessage(sender.id, error);
+        this._sendMessage(sender.id, error);
       }
     }
   }
@@ -394,7 +394,7 @@ export class HcMain extends HassElement {
     }
   }
 
-  private sendMessage(senderId: string, response: any) {
+  private _sendMessage(senderId: string, response: any) {
     castContext.sendCustomMessage(CAST_NS, senderId, response);
   }
 }

demo/src/custom-cards/cast-demo-row.ts

@@ -46,7 +46,6 @@ class CastDemoRow extends LitElement implements LovelaceRow {
           this.requestUpdate();
         });
         mgr.castContext.addEventListener(
-          // eslint-disable-next-line no-undef
           cast.framework.CastContextEventType.SESSION_STATE_CHANGED,
           (ev) => {
             // On Android, opening a new session always results in SESSION_RESUMED.

demo/src/custom-cards/ha-demo-card.ts

@@ -26,7 +26,7 @@ export class HADemoCard extends LitElement implements LovelaceCard {
 
   @state() private _switching = false;
 
-  private _hidden = localStorage.hide_demo_card;
+  private _hidden = window.localStorage.getItem("hide_demo_card");
 
   public getCardSize() {
     return this._hidden ? 0 : 2;

eslint.config.mjs

@@ -7,10 +7,10 @@ import { fileURLToPath } from "node:url";
 import js from "@eslint/js";
 import { FlatCompat } from "@eslint/eslintrc";
 
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
+const _filename = fileURLToPath(import.meta.url);
+const _dirname = path.dirname(_filename);
 const compat = new FlatCompat({
-  baseDirectory: __dirname,
+  baseDirectory: _dirname,
   recommendedConfig: js.configs.recommended,
   allConfig: js.configs.all,
 });
@@ -114,12 +114,10 @@ export default [
       "@typescript-eslint/no-shadow": ["error"],
 
       "@typescript-eslint/naming-convention": [
-        "off",
+        "error",
         {
-          selector: "default",
-          format: ["camelCase", "snake_case"],
-          leadingUnderscore: "allow",
-          trailingUnderscore: "allow",
+          selector: ["objectLiteralProperty", "objectLiteralMethod"],
+          format: null,
         },
         {
           selector: ["variable"],
@@ -127,10 +125,27 @@ export default [
           leadingUnderscore: "allow",
           trailingUnderscore: "allow",
         },
+        {
+          selector: ["variable"],
+          modifiers: ["exported"],
+          format: ["camelCase", "PascalCase", "UPPER_CASE"],
+        },
         {
           selector: "typeLike",
           format: ["PascalCase"],
         },
+        {
+          selector: "method",
+          modifiers: ["public"],
+          format: ["camelCase"],
+          leadingUnderscore: "forbid",
+        },
+        {
+          selector: "method",
+          modifiers: ["private"],
+          format: ["camelCase"],
+          leadingUnderscore: "require",
+        },
       ],
 
       "@typescript-eslint/no-unused-vars": "off",
@@ -147,16 +162,16 @@ export default [
       ],
 
       "unused-imports/no-unused-imports": "error",
-      "lit/attribute-names": "warn",
+      "lit/attribute-names": "error",
       "lit/attribute-value-entities": "off",
       "lit/no-template-map": "off",
-      "lit/no-native-attributes": "warn",
-      "lit/no-this-assign-in-render": "warn",
+      "lit/no-native-attributes": "error",
+      "lit/no-this-assign-in-render": "error",
       "lit-a11y/click-events-have-key-events": ["off"],
       "lit-a11y/no-autofocus": "off",
-      "lit-a11y/alt-text": "warn",
-      "lit-a11y/anchor-is-valid": "warn",
-      "lit-a11y/role-has-required-aria-attrs": "warn",
+      "lit-a11y/alt-text": "error",
+      "lit-a11y/anchor-is-valid": "error",
+      "lit-a11y/role-has-required-aria-attrs": "error",
       "@typescript-eslint/consistent-type-imports": "error",
       "@typescript-eslint/no-import-type-side-effects": "error",
     },

gallery/src/components/demo-black-white-row.ts

@@ -9,6 +9,7 @@ import "../../../src/components/ha-card";
 
 @customElement("demo-black-white-row")
 class DemoBlackWhiteRow extends LitElement {
+  // eslint-disable-next-line lit/no-native-attributes
   @property() title!: string;
 
   @property() value?: any;

gallery/src/components/demo-card.ts

@@ -18,7 +18,8 @@ class DemoCard extends LitElement {
 
   @property({ attribute: false }) public config!: DemoCardConfig;
 
-  @property({ type: Boolean }) public showConfig = false;
+  @property({ attribute: "show-config", type: Boolean })
+  public showConfig = false;
 
   @state() private _size?: number;
 

gallery/src/components/demo-cards.ts

@@ -44,11 +44,11 @@ class DemoCards extends LitElement {
     `;
   }
 
-  _showConfigToggled(ev) {
+  private _showConfigToggled(ev) {
     this._showConfig = ev.target.checked;
   }
 
-  _darkThemeToggled(ev) {
+  private _darkThemeToggled(ev) {
     applyThemesOnElement(this._container, { themes: {} } as any, "default", {
       dark: ev.target.checked,
     });

gallery/src/components/demo-more-info.ts

@@ -10,9 +10,10 @@ import type { HomeAssistant } from "../../../src/types";
 class DemoMoreInfo extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
-  @property() public entityId!: string;
+  @property({ attribute: false }) public entityId!: string;
 
-  @property({ type: Boolean }) public showConfig = false;
+  @property({ attribute: "show-config", type: Boolean })
+  public showConfig = false;
 
   render() {
     const state = this._getState(this.entityId, this.hass.states);
@@ -23,7 +24,7 @@ class DemoMoreInfo extends LitElement {
             <state-card-content
               .stateObj=${state}
               .hass=${this.hass}
-              inDialog
+              in-dialog
             ></state-card-content>
 
             <more-info-content

gallery/src/components/demo-more-infos.ts

@@ -58,11 +58,11 @@ class DemoMoreInfos extends LitElement {
     }
   `;
 
-  _showConfigToggled(ev) {
+  private _showConfigToggled(ev) {
     this._showConfig = ev.target.checked;
   }
 
-  _darkThemeToggled(ev) {
+  private _darkThemeToggled(ev) {
     applyThemesOnElement(
       this.shadowRoot!.querySelector("#container"),
       {

gallery/src/ha-gallery.ts

@@ -182,7 +182,7 @@ class HaGallery extends LitElement {
     }
   }
 
-  _menuTapped() {
+  private _menuTapped() {
     this._drawer.open = !this._drawer.open;
   }
 

gallery/src/pages/automation/editor-action.ts

@@ -63,11 +63,6 @@ class DemoHaAutomationEditorAction extends LitElement {
   }
 
   protected render(): TemplateResult {
-    const valueChanged = (ev) => {
-      const sampleIdx = ev.target.sampleIdx;
-      this.data[sampleIdx] = ev.detail.value;
-      this.requestUpdate();
-    };
     return html`
       <div class="options">
         <ha-formfield label="Disabled">
@@ -92,7 +87,7 @@ class DemoHaAutomationEditorAction extends LitElement {
                   .actions=${this.data[sampleIdx]}
                   .sampleIdx=${sampleIdx}
                   .disabled=${this._disabled}
-                  @value-changed=${valueChanged}
+                  @value-changed=${this._handleValueChange}
                 ></ha-automation-action>
               `
             )}
@@ -102,6 +97,12 @@ class DemoHaAutomationEditorAction extends LitElement {
     `;
   }
 
+  private _handleValueChange(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this.data[sampleIdx] = ev.detail.value;
+    this.requestUpdate();
+  }
+
   private _handleOptionChange(ev) {
     this[`_${ev.target.name}`] = ev.target.checked;
   }

gallery/src/pages/automation/editor-condition.ts

@@ -1,4 +1,3 @@
-/* eslint-disable lit/no-template-arrow */
 import type { TemplateResult } from "lit";
 import { LitElement, html, css } from "lit";
 import { customElement, state } from "lit/decorators";
@@ -104,11 +103,6 @@ export class DemoAutomationEditorCondition extends LitElement {
   }
 
   protected render(): TemplateResult {
-    const valueChanged = (ev) => {
-      const sampleIdx = ev.target.sampleIdx;
-      this.data[sampleIdx] = ev.detail.value;
-      this.requestUpdate();
-    };
     return html`
       <div class="options">
         <ha-formfield label="Disabled">
@@ -133,7 +127,7 @@ export class DemoAutomationEditorCondition extends LitElement {
                   .conditions=${this.data[sampleIdx]}
                   .sampleIdx=${sampleIdx}
                   .disabled=${this._disabled}
-                  @value-changed=${valueChanged}
+                  @value-changed=${this._handleValueChange}
                 ></ha-automation-condition>
               `
             )}
@@ -143,6 +137,12 @@ export class DemoAutomationEditorCondition extends LitElement {
     `;
   }
 
+  private _handleValueChange(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this.data[sampleIdx] = ev.detail.value;
+    this.requestUpdate();
+  }
+
   private _handleOptionChange(ev) {
     this[`_${ev.target.name}`] = ev.target.checked;
   }

gallery/src/pages/automation/editor-trigger.ts

@@ -149,11 +149,6 @@ export class DemoAutomationEditorTrigger extends LitElement {
   }
 
   protected render(): TemplateResult {
-    const valueChanged = (ev) => {
-      const sampleIdx = ev.target.sampleIdx;
-      this.data[sampleIdx] = ev.detail.value;
-      this.requestUpdate();
-    };
     return html`
       <div class="options">
         <ha-formfield label="Disabled">
@@ -178,7 +173,7 @@ export class DemoAutomationEditorTrigger extends LitElement {
                   .triggers=${this.data[sampleIdx]}
                   .sampleIdx=${sampleIdx}
                   .disabled=${this._disabled}
-                  @value-changed=${valueChanged}
+                  @value-changed=${this._handleValueChange}
                 ></ha-automation-trigger>
               `
             )}
@@ -188,6 +183,12 @@ export class DemoAutomationEditorTrigger extends LitElement {
     `;
   }
 
+  private _handleValueChange(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this.data[sampleIdx] = ev.detail.value;
+    this.requestUpdate();
+  }
+
   private _handleOptionChange(ev) {
     this[`_${ev.target.name}`] = ev.target.checked;
   }

gallery/src/pages/automation/trace.ts

@@ -31,22 +31,17 @@ export class DemoAutomationTrace extends LitElement {
               <hat-script-graph
                 .trace=${trace.trace}
                 .selected=${this._selected[idx]}
-                @graph-node-selected=${(ev) => {
-                  this._selected = { ...this._selected, [idx]: ev.detail.path };
-                }}
+                @graph-node-selected=${this._handleGraphNodeSelected}
+                .sampleIdx=${idx}
               ></hat-script-graph>
               <hat-trace-timeline
-                allowPick
+                allow-pick
                 .hass=${this.hass}
                 .trace=${trace.trace}
                 .logbookEntries=${trace.logbookEntries}
                 .selectedPath=${this._selected[idx]}
-                @value-changed=${(ev) => {
-                  this._selected = {
-                    ...this._selected,
-                    [idx]: ev.detail.value,
-                  };
-                }}
+                @value-changed=${this._handleTimelineValueChanged}
+                .sampleIdx=${idx}
               ></hat-trace-timeline>
               <button @click=${() => console.log(trace)}>Log trace</button>
             </div>
@@ -63,6 +58,16 @@ export class DemoAutomationTrace extends LitElement {
     hass.updateTranslations("config", "en");
   }
 
+  private _handleTimelineValueChanged(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this._selected = { ...this._selected, [sampleIdx]: ev.detail.value };
+  }
+
+  private _handleGraphNodeSelected(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this._selected = { ...this._selected, [sampleIdx]: ev.detail.path };
+  }
+
   static get styles() {
     return css`
       ha-card {

gallery/src/pages/components/ha-form.ts

@@ -489,14 +489,8 @@ class DemoHaForm extends LitElement {
             .title=${info.title}
             .value=${this.data[idx]}
             .disabled=${this.disabled[idx]}
-            @submitted=${() => {
-              this.disabled[idx] = true;
-              this.requestUpdate();
-              setTimeout(() => {
-                this.disabled[idx] = false;
-                this.requestUpdate();
-              }, 2000);
-            }}
+            @submitted=${this._handleSubmit}
+            .sampleIdx=${idx}
           >
             ${["light", "dark"].map(
               (slot) => html`
@@ -511,10 +505,8 @@ class DemoHaForm extends LitElement {
                   .computeLabel=${(schema) =>
                     translations[schema.name] || schema.name}
                   .computeHelper=${() => "Helper text"}
-                  @value-changed=${(e) => {
-                    this.data[idx] = e.detail.value;
-                    this.requestUpdate();
-                  }}
+                  @value-changed=${this._handleValueChanged}
+                  .sampleIdx=${idx}
                 ></ha-form>
               `
             )}
@@ -523,6 +515,22 @@ class DemoHaForm extends LitElement {
       })}
     `;
   }
+
+  private _handleValueChanged(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this.data[sampleIdx] = ev.detail.value;
+    this.requestUpdate();
+  }
+
+  private _handleSubmit(ev) {
+    const sampleIdx = ev.target.sampleIdx;
+    this.disabled[sampleIdx] = true;
+    this.requestUpdate();
+    setTimeout(() => {
+      this.disabled[sampleIdx] = false;
+      this.requestUpdate();
+    }, 2000);
+  }
 }
 
 declare global {

gallery/src/pages/components/ha-selector.ts

@@ -1,4 +1,3 @@
-/* eslint-disable lit/no-template-arrow */
 import "@material/mwc-button";
 import type { TemplateResult } from "lit";
 import { css, html, LitElement } from "lit";
@@ -591,13 +590,6 @@ class DemoHaSelector extends LitElement implements ProvideHassElement {
       </div>
       ${SCHEMAS.map((info, idx) => {
         const data = this.data[idx];
-        const valueChanged = (ev) => {
-          this.data[idx] = {
-            ...data,
-            [ev.target.key]: ev.detail.value,
-          };
-          this.requestUpdate();
-        };
         return html`
           <demo-black-white-row .title=${info.name}>
             ${["light", "dark"].map((slot) =>
@@ -614,7 +606,8 @@ class DemoHaSelector extends LitElement implements ProvideHassElement {
                       .value=${data[key] ?? value!.default}
                       .disabled=${this._disabled}
                       .required=${this._required}
-                      @value-changed=${valueChanged}
+                      @value-changed=${this._handleValueChanged}
+                      .sampleIdx=${idx}
                       .helper=${this._helper ? "Helper text" : undefined}
                     ></ha-selector>
                   </ha-settings-row>
@@ -627,6 +620,15 @@ class DemoHaSelector extends LitElement implements ProvideHassElement {
     `;
   }
 
+  private _handleValueChanged(ev) {
+    const idx = ev.target.sampleIdx;
+    this.data[idx] = {
+      ...this.data[idx],
+      [ev.target.key]: ev.detail.value,
+    };
+    this.requestUpdate();
+  }
+
   private _handleOptionChange(ev) {
     this[`_${ev.target.name}`] = ev.target.checked;
   }

gallery/src/pages/lovelace/tile-card.ts

@@ -4,6 +4,7 @@ import { customElement, query } from "lit/decorators";
 import { CoverEntityFeature } from "../../../../src/data/cover";
 import { LightColorMode } from "../../../../src/data/light";
 import { LockEntityFeature } from "../../../../src/data/lock";
+import { MediaPlayerEntityFeature } from "../../../../src/data/media-player";
 import { VacuumEntityFeature } from "../../../../src/data/vacuum";
 import { getEntity } from "../../../../src/fake_data/entity";
 import { provideHass } from "../../../../src/fake_data/provide_hass";
@@ -28,6 +29,10 @@ const ENTITIES = [
     device_class: "lock",
     supported_features: LockEntityFeature.OPEN,
   }),
+  getEntity("media_player", "living_room", "playing", {
+    friendly_name: "Living room speaker",
+    supported_features: MediaPlayerEntityFeature.VOLUME_SET,
+  }),
   getEntity("climate", "thermostat", "heat", {
     current_temperature: 73,
     min_temp: 45,
@@ -197,6 +202,15 @@ const CONFIGS = [
     - type: "lock-open-door"
     `,
   },
+  {
+    heading: "Media player volume slider feature",
+    config: `
+- type: tile
+  entity: media_player.living_room
+  features:
+    - type: "media-player-volume-slider"
+    `,
+  },
   {
     heading: "Vacuum commands feature",
     config: `

hassio/src/addon-store/hassio-addon-store.ts

@@ -136,7 +136,7 @@ export class HassioAddonStore extends LitElement {
       this._manageRepositories(repositoryUrl);
     }
 
-    this.addEventListener("hass-api-called", (ev) => this.apiCalled(ev));
+    this.addEventListener("hass-api-called", (ev) => this._apiCalled(ev));
     this._loadData();
   }
 
@@ -179,7 +179,7 @@ export class HassioAddonStore extends LitElement {
     }
   }
 
-  private apiCalled(ev) {
+  private _apiCalled(ev) {
     if (ev.detail.success) {
       this._loadData();
     }

hassio/src/backups/hassio-backups.ts

@@ -58,7 +58,7 @@ export class HassioBackups extends LitElement {
 
   @property({ type: Boolean }) public narrow = false;
 
-  @property({ type: Boolean }) public isWide = false;
+  @property({ attribute: "is-wide", type: Boolean }) public isWide = false;
 
   @state() private _selectedBackups: string[] = [];
 
@@ -74,7 +74,7 @@ export class HassioBackups extends LitElement {
   public connectedCallback(): void {
     super.connectedCallback();
     if (this.hass && this._firstUpdatedCalled) {
-      this.fetchBackups();
+      this._fetchBackups();
     }
   }
 
@@ -107,7 +107,7 @@ export class HassioBackups extends LitElement {
   protected firstUpdated(changedProperties: PropertyValues): void {
     super.firstUpdated(changedProperties);
     if (this.hass && this.isConnected) {
-      this.fetchBackups();
+      this._fetchBackups();
     }
     this._firstUpdatedCalled = true;
   }
@@ -198,7 +198,7 @@ export class HassioBackups extends LitElement {
         @selection-changed=${this._handleSelectionChanged}
         clickable
         selectable
-        hasFab
+        has-fab
         .mainPage=${!atLeastVersion(this.hass.config.version, 2021, 12)}
         back-path=${atLeastVersion(this.hass.config.version, 2022, 5)
           ? "/config/system"
@@ -280,7 +280,7 @@ export class HassioBackups extends LitElement {
   private _handleAction(ev: CustomEvent<ActionDetail>) {
     switch (ev.detail.index) {
       case 0:
-        this.fetchBackups();
+        this._fetchBackups();
         break;
       case 1:
         showHassioBackupLocationDialog(this, { supervisor: this.supervisor });
@@ -303,13 +303,13 @@ export class HassioBackups extends LitElement {
         showHassioBackupDialog(this, {
           slug,
           supervisor: this.supervisor,
-          onDelete: () => this.fetchBackups(),
+          onDelete: () => this._fetchBackups(),
         }),
-      reloadBackup: () => this.fetchBackups(),
+      reloadBackup: () => this._fetchBackups(),
     });
   }
 
-  private async fetchBackups() {
+  private async _fetchBackups() {
     this._isLoading = true;
     await reloadHassioBackups(this.hass);
     this._backups = await fetchHassioBackups(this.hass);
@@ -341,7 +341,7 @@ export class HassioBackups extends LitElement {
       });
       return;
     }
-    await this.fetchBackups();
+    await this._fetchBackups();
     this._dataTable.clearSelection();
   }
 
@@ -350,7 +350,7 @@ export class HassioBackups extends LitElement {
     showHassioBackupDialog(this, {
       slug,
       supervisor: this.supervisor,
-      onDelete: () => this.fetchBackups(),
+      onDelete: () => this._fetchBackups(),
     });
   }
 
@@ -366,7 +366,7 @@ export class HassioBackups extends LitElement {
     }
     showHassioCreateBackupDialog(this, {
       supervisor: this.supervisor!,
-      onCreate: () => this.fetchBackups(),
+      onCreate: () => this._fetchBackups(),
     });
   }
 

hassio/src/components/hassio-card-content.ts

@@ -9,23 +9,24 @@ import type { HomeAssistant } from "../../../src/types";
 class HassioCardContent extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property() public title!: string;
 
   @property() public description?: string;
 
   @property({ type: Boolean }) public available = true;
 
-  @property({ type: Boolean }) public showTopbar = false;
+  @property({ attribute: false }) public showTopbar = false;
 
-  @property() public topbarClass?: string;
+  @property({ attribute: false }) public topbarClass?: string;
 
-  @property() public iconTitle?: string;
+  @property({ attribute: false }) public iconTitle?: string;
 
-  @property() public iconClass?: string;
+  @property({ attribute: false }) public iconClass?: string;
 
   @property() public icon = mdiHelpCircle;
 
-  @property() public iconImage?: string;
+  @property({ attribute: false }) public iconImage?: string;
 
   protected render(): TemplateResult {
     return html`
@@ -35,7 +36,11 @@ class HassioCardContent extends LitElement {
       ${this.iconImage
         ? html`
             <div class="icon_image ${this.iconClass}">
-              <img src=${this.iconImage} .title=${this.iconTitle} />
+              <img
+                src=${this.iconImage}
+                .title=${this.iconTitle}
+                alt=${this.iconTitle ?? ""}
+              />
               <div></div>
             </div>
           `

hassio/src/components/supervisor-backup-content.ts

@@ -73,23 +73,24 @@ export class SupervisorBackupContent extends LitElement {
 
   @property({ attribute: false }) public backup?: HassioBackupDetail;
 
-  @property() public backupType: HassioBackupDetail["type"] = "full";
+  @property({ attribute: false })
+  public backupType: HassioBackupDetail["type"] = "full";
 
   @property({ attribute: false }) public folders?: CheckboxItem[];
 
   @property({ attribute: false }) public addons?: AddonCheckboxItem[];
 
-  @property({ type: Boolean }) public homeAssistant = false;
+  @property({ attribute: false }) public homeAssistant = false;
 
-  @property({ type: Boolean }) public backupHasPassword = false;
+  @property({ attribute: false }) public backupHasPassword = false;
 
   @property({ type: Boolean }) public onboarding = false;
 
-  @property() public backupName = "";
+  @property({ attribute: false }) public backupName = "";
 
-  @property() public backupPassword = "";
+  @property({ attribute: false }) public backupPassword = "";
 
-  @property() public confirmBackupPassword = "";
+  @property({ attribute: false }) public confirmBackupPassword = "";
 
   @query("ha-textfield, ha-radio, ha-checkbox", true) private _focusTarget;
 
@@ -191,7 +192,7 @@ export class SupervisorBackupContent extends LitElement {
                 >
                   <ha-checkbox
                     .checked=${this.homeAssistant}
-                    @change=${this.toggleHomeAssistant}
+                    @change=${this._toggleHomeAssistant}
                   >
                   </ha-checkbox>
                 </ha-formfield>`
@@ -277,7 +278,7 @@ export class SupervisorBackupContent extends LitElement {
     `;
   }
 
-  private toggleHomeAssistant() {
+  private _toggleHomeAssistant() {
     this.homeAssistant = !this.homeAssistant;
   }
 

hassio/src/components/supervisor-formfield-label.ts

@@ -7,9 +7,9 @@ import "../../../src/components/ha-svg-icon";
 class SupervisorFormfieldLabel extends LitElement {
   @property({ type: String }) public label!: string;
 
-  @property({ type: String }) public imageUrl?: string;
+  @property({ attribute: false }) public imageUrl?: string;
 
-  @property({ type: String }) public iconPath?: string;
+  @property({ attribute: false }) public iconPath?: string;
 
   @property({ type: String }) public version?: string;
 

hassio/src/dashboard/hassio-dashboard.ts

@@ -76,7 +76,7 @@ class HassioDashboard extends LitElement {
         .mainPage=${!atLeastVersion(this.hass.config.version, 2021, 12)}
         back-path="/config"
         supervisor
-        hasFab
+        has-fab
       >
         <span slot="header">
           ${this.supervisor.localize(

hassio/src/dialogs/datadisk/dialog-hassio-datadisk.ts

@@ -95,7 +95,7 @@ class HassioDatadiskDialog extends LitElement {
                       .label=${this.dialogParams.supervisor.localize(
                         "dialog.datadisk_move.select_device"
                       )}
-                      @selected=${this._select_device}
+                      @selected=${this._selectDevice}
                       dialogInitialFocus
                     >
                       ${this.devices.map(
@@ -137,7 +137,7 @@ class HassioDatadiskDialog extends LitElement {
     `;
   }
 
-  private _select_device(ev) {
+  private _selectDevice(ev) {
     this.selectedDevice = ev.target.value;
   }
 

hassio/src/dialogs/markdown/dialog-hassio-markdown.ts

@@ -12,6 +12,7 @@ import type { HassioMarkdownDialogParams } from "./show-dialog-hassio-markdown";
 class HassioMarkdownDialog extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property() public title!: string;
 
   @property() public content!: string;

hassio/src/dialogs/network/dialog-hassio-network.ts

@@ -394,7 +394,7 @@ export class DialogHassioNetwork
     `;
   }
 
-  _toArray(data: string | string[]): string[] {
+  private _toArray(data: string | string[]): string[] {
     if (Array.isArray(data)) {
       if (data && typeof data[0] === "string") {
         data = data[0];
@@ -409,7 +409,7 @@ export class DialogHassioNetwork
     return data;
   }
 
-  _toString(data: string | string[]): string {
+  private _toString(data: string | string[]): string {
     if (!data) {
       return "";
     }

hassio/src/ingress-view/hassio-ingress-view.ts

@@ -34,7 +34,7 @@ class HassioIngressView extends LitElement {
 
   @property({ attribute: false }) public route!: Route;
 
-  @property({ type: Boolean }) public ingressPanel = false;
+  @property({ attribute: false }) public ingressPanel = false;
 
   @property({ type: Boolean }) public narrow = false;
 

hassio/src/update-available/update-available-card.ts

@@ -58,10 +58,10 @@ const SUPERVISOR_UPDATE_NAMES = {
   supervisor: "Home Assistant Supervisor",
 };
 
-type updateType = "os" | "supervisor" | "core" | "addon";
+type UpdateType = "os" | "supervisor" | "core" | "addon";
 
 const changelogUrl = (
-  entry: updateType,
+  entry: UpdateType,
   version: string
 ): string | undefined => {
   if (entry === "addon") {
@@ -99,7 +99,7 @@ class UpdateAvailableCard extends LitElement {
 
   @property({ attribute: false }) public addonSlug?: string;
 
-  @state() private _updateType?: updateType;
+  @state() private _updateType?: UpdateType;
 
   @state() private _changelogContent?: string;
 
@@ -222,7 +222,7 @@ class UpdateAvailableCard extends LitElement {
     const updateType = ["core", "os", "supervisor"].includes(pathPart)
       ? pathPart
       : "addon";
-    this._updateType = updateType as updateType;
+    this._updateType = updateType as UpdateType;
 
     switch (updateType) {
       case "addon":

landing-page/src/ha-landing-page.ts

@@ -64,9 +64,9 @@ class HaLandingPage extends LandingPageBaseElement {
         <ha-language-picker
           .value=${this.language}
           .label=${""}
-          nativeName
+          native-name
           @value-changed=${this._languageChanged}
-          inlineArrow
+          inline-arrow
         ></ha-language-picker>
         <a
           href="https://www.home-assistant.io/getting-started/onboarding/"
@@ -122,7 +122,10 @@ class HaLandingPage extends LandingPageBaseElement {
     if (language !== this.language && language) {
       this.language = language;
       try {
-        localStorage.setItem("selectedLanguage", JSON.stringify(language));
+        window.localStorage.setItem(
+          "selectedLanguage",
+          JSON.stringify(language)
+        );
       } catch (err: any) {
         // Ignore
       }

package.json

@@ -8,7 +8,7 @@
   "version": "1.0.0",
   "scripts": {
     "build": "script/build_frontend",
-    "lint:eslint": "eslint --flag unstable_config_lookup_from_file \"**/src/**/*.{js,ts,html}\" --cache --cache-strategy=content --cache-location=node_modules/.cache/eslint/.eslintcache --ignore-pattern=.gitignore",
+    "lint:eslint": "eslint --flag unstable_config_lookup_from_file \"**/src/**/*.{js,ts,html}\" --cache --cache-strategy=content --cache-location=node_modules/.cache/eslint/.eslintcache --ignore-pattern=.gitignore --max-warnings=0",
     "format:eslint": "eslint --flag unstable_config_lookup_from_file \"**/src/**/*.{js,ts,html}\" --cache --cache-strategy=content --cache-location=node_modules/.cache/eslint/.eslintcache --ignore-pattern=.gitignore --fix",
     "lint:prettier": "prettier . --cache --check",
     "format:prettier": "prettier . --cache --write",
@@ -30,21 +30,21 @@
     "@braintree/sanitize-url": "7.1.0",
     "@codemirror/autocomplete": "6.18.3",
     "@codemirror/commands": "6.7.1",
-    "@codemirror/language": "6.10.3",
+    "@codemirror/language": "6.10.6",
     "@codemirror/legacy-modes": "6.4.2",
     "@codemirror/search": "6.5.8",
     "@codemirror/state": "6.4.1",
-    "@codemirror/view": "6.35.0",
+    "@codemirror/view": "6.35.2",
     "@egjs/hammerjs": "2.0.17",
-    "@formatjs/intl-datetimeformat": "6.16.5",
-    "@formatjs/intl-displaynames": "6.8.5",
-    "@formatjs/intl-durationformat": "0.6.4",
+    "@formatjs/intl-datetimeformat": "6.16.6",
+    "@formatjs/intl-displaynames": "6.8.6",
+    "@formatjs/intl-durationformat": "0.6.5",
     "@formatjs/intl-getcanonicallocales": "2.5.3",
-    "@formatjs/intl-listformat": "7.7.5",
-    "@formatjs/intl-locale": "4.2.5",
-    "@formatjs/intl-numberformat": "8.14.5",
-    "@formatjs/intl-pluralrules": "5.3.5",
-    "@formatjs/intl-relativetimeformat": "11.4.5",
+    "@formatjs/intl-listformat": "7.7.6",
+    "@formatjs/intl-locale": "4.2.6",
+    "@formatjs/intl-numberformat": "8.14.6",
+    "@formatjs/intl-pluralrules": "5.3.6",
+    "@formatjs/intl-relativetimeformat": "11.4.6",
     "@fullcalendar/core": "6.1.15",
     "@fullcalendar/daygrid": "6.1.15",
     "@fullcalendar/interaction": "6.1.15",
@@ -91,8 +91,8 @@
     "@polymer/polymer": "3.5.2",
     "@replit/codemirror-indentation-markers": "6.5.3",
     "@thomasloven/round-slider": "0.6.0",
-    "@vaadin/combo-box": "24.5.4",
-    "@vaadin/vaadin-themable-mixin": "24.5.4",
+    "@vaadin/combo-box": "24.5.5",
+    "@vaadin/vaadin-themable-mixin": "24.5.5",
     "@vibrant/color": "3.2.1-alpha.1",
     "@vibrant/core": "3.2.1-alpha.1",
     "@vibrant/quantizer-mmcq": "3.2.1-alpha.1",
@@ -101,7 +101,7 @@
     "@webcomponents/webcomponentsjs": "2.8.0",
     "app-datepicker": "5.1.1",
     "barcode-detector": "2.3.1",
-    "chart.js": "4.4.6",
+    "chart.js": "4.4.7",
     "color-name": "2.0.0",
     "comlink": "4.4.2",
     "core-js": "3.39.0",
@@ -111,20 +111,20 @@
     "deep-clone-simple": "1.1.1",
     "deep-freeze": "0.0.1",
     "dialog-polyfill": "0.5.6",
-    "element-internals-polyfill": "1.3.11",
+    "element-internals-polyfill": "1.3.12",
     "fuse.js": "7.0.0",
     "google-timezones-json": "1.2.0",
     "hls.js": "patch:hls.js@npm%3A1.5.7#~/.yarn/patches/hls.js-npm-1.5.7-f5bbd3d060.patch",
     "home-assistant-js-websocket": "9.4.0",
     "idb-keyval": "6.2.1",
-    "intl-messageformat": "10.7.7",
+    "intl-messageformat": "10.7.8",
     "js-yaml": "4.1.0",
     "leaflet": "1.9.4",
     "leaflet-draw": "patch:leaflet-draw@npm%3A1.0.4#./.yarn/patches/leaflet-draw-npm-1.0.4-0ca0ebcf65.patch",
     "lit": "2.8.0",
     "lit-html": "2.8.0",
     "luxon": "3.5.0",
-    "marked": "15.0.2",
+    "marked": "15.0.3",
     "memoize-one": "6.0.0",
     "node-vibrant": "3.2.1-alpha.1",
     "proxy-polyfill": "0.3.2",
@@ -162,23 +162,21 @@
     "@babel/preset-env": "7.26.0",
     "@babel/preset-typescript": "7.26.0",
     "@bundle-stats/plugin-webpack-filter": "4.17.0",
-    "@koa/cors": "5.0.0",
     "@lokalise/node-api": "12.8.0",
     "@octokit/auth-oauth-device": "7.1.1",
     "@octokit/plugin-retry": "7.1.2",
     "@octokit/rest": "21.0.2",
-    "@open-wc/dev-server-hmr": "0.1.4",
-    "@rsdoctor/rspack-plugin": "0.4.8",
-    "@rspack/cli": "1.1.4",
-    "@rspack/core": "1.1.4",
+    "@rsdoctor/rspack-plugin": "0.4.11",
+    "@rspack/cli": "1.1.5",
+    "@rspack/core": "1.1.5",
     "@types/babel__plugin-transform-runtime": "7.9.5",
-    "@types/chromecast-caf-receiver": "6.0.19",
+    "@types/chromecast-caf-receiver": "6.0.20",
     "@types/chromecast-caf-sender": "1.0.11",
     "@types/color-name": "2.0.0",
     "@types/glob": "8.1.0",
     "@types/html-minifier-terser": "7.0.2",
     "@types/js-yaml": "4.0.9",
-    "@types/leaflet": "1.9.14",
+    "@types/leaflet": "1.9.15",
     "@types/leaflet-draw": "1.0.11",
     "@types/lodash.merge": "4.6.9",
     "@types/luxon": "3.4.2",
@@ -191,13 +189,12 @@
     "@types/webspeechapi": "0.0.29",
     "@typescript-eslint/eslint-plugin": "7.18.0",
     "@typescript-eslint/parser": "7.18.0",
-    "@vitest/coverage-v8": "2.1.5",
-    "@web/dev-server": "0.1.38",
+    "@vitest/coverage-v8": "2.1.8",
     "babel-loader": "9.2.1",
     "babel-plugin-template-html-minifier": "4.1.0",
     "browserslist-useragent-regexp": "4.1.3",
     "del": "8.0.0",
-    "eslint": "9.15.0",
+    "eslint": "9.16.0",
     "eslint-config-airbnb-base": "15.0.0",
     "eslint-config-airbnb-typescript": "18.0.0",
     "eslint-config-prettier": "9.1.0",
@@ -214,30 +211,29 @@
     "gulp-brotli": "3.0.0",
     "gulp-json-transform": "0.5.0",
     "gulp-rename": "2.0.0",
-    "gulp-zopfli-green": "6.0.2",
     "html-minifier-terser": "7.2.0",
     "husky": "9.1.7",
+    "jsdom": "25.0.1",
     "jszip": "3.10.1",
     "lint-staged": "15.2.10",
     "lit-analyzer": "2.0.3",
     "lodash.merge": "4.6.2",
     "lodash.template": "4.5.0",
-    "magic-string": "0.30.13",
+    "magic-string": "0.30.14",
     "map-stream": "0.0.7",
     "object-hash": "3.0.0",
     "open": "10.1.0",
     "pinst": "3.0.0",
-    "prettier": "3.3.3",
+    "prettier": "3.4.2",
     "rspack-manifest-plugin": "5.0.2",
     "serve-handler": "6.1.6",
     "sinon": "19.0.2",
     "systemjs": "6.15.1",
     "tar": "7.4.3",
     "terser-webpack-plugin": "5.3.10",
-    "transform-async-modules-webpack-plugin": "1.1.1",
     "ts-lit-plugin": "2.0.2",
     "typescript": "5.7.2",
-    "vitest": "2.1.5",
+    "vitest": "2.1.8",
     "webpack-stats-plugin": "1.1.3",
     "webpackbar": "7.0.0",
     "workbox-build": "patch:workbox-build@npm%3A7.1.1#~/.yarn/patches/workbox-build-npm-7.1.1-a854f3faae.patch"
@@ -251,7 +247,7 @@
     "clean-css": "5.3.3",
     "@lit/reactive-element": "1.6.3",
     "@fullcalendar/daygrid": "6.1.15",
-    "globals": "15.12.0"
+    "globals": "15.13.0"
   },
-  "packageManager": "yarn@4.5.2"
+  "packageManager": "yarn@4.5.3"
 }

renovate.json

@@ -43,12 +43,6 @@
       "description": "Group date-fns with dependent timezone package",
       "groupName": "date-fns",
       "matchPackageNames": ["date-fns", "date-fns-tz"]
-    },
-    {
-      "description": "Group and temporarily disable WDS packages",
-      "groupName": "Web Dev Server",
-      "enabled": false,
-      "matchPackageNames": ["@web/dev-server{/,}**"]
     }
   ]
 }

script/develop_and_serve

@@ -0,0 +1,70 @@
+#!/bin/sh
+#
+# This script can be used to develop and test the frontend without having to
+# link the build in a running core instance through the frontend/development_repo setting.
+#
+# WARNING:
+# If you have an active login session in the frontend. The core that was used
+# as a backend during the time of the login remains used until you logout again.
+# So if you reuse the url hosting the frontend, you will need to logout before
+# it will actually start using the core backend configured by this script.
+#
+# If you run this script without parameters, the frontend will be accessible under http://localhost:8124.
+# And it will use the core instance running under http://localhost:8123 as a backend.
+# Note that from a devcontainer, the frontend will be accessible under port 8124 on the host container.
+# Inside the devcontainer it will be accessible under port 8123 instead.
+# The core instance endpoint remains the same in both cases, as this is resolved from the browser.
+#
+# You can change the core instance the frontend connects to by passing the -c option.
+# For example: script/develop_and_serve -c https://myhost.duckdns.org:8123
+# This will also work for existing production core instances.
+# It does not need to be a development version hosted locally.
+#
+# You can change the port the frontend is served on by passing the -p option.
+# For example: script/develop_and_serve -p 8654
+# Note that if you are running from a devcontainer, you will need to setup
+# port forwarding as well if you want to access it from the container host.
+
+# Stop on errors
+set -e
+
+cd "$(dirname "$0")/.."
+
+# parse input paramters
+if [ -n "$DEVCONTAINER" ]; then
+    frontendPort=8123
+else
+    frontendPort=8124
+fi
+
+coreUrl=http://localhost:8123
+
+while getopts p:c:h flag
+do
+    case "${flag}" in
+        p) frontendPort=${OPTARG};;
+        c) coreUrl="${OPTARG}";;
+        h) echo Documentation can be found inside "$0" && exit 0;;
+        *) echo Documentation can be found inside "$0" && exit 1;;
+    esac
+done
+
+# display used settings
+if [ -n "$DEVCONTAINER" ]; then
+    echo Frontend is available inside container as http://localhost:${frontendPort}
+    if [ 8123 -eq $frontendPort ]; then
+      echo Frontend is available on container host as http://localhost:8124
+    fi
+else
+    echo Frontend is hosted on http://localhost:${frontendPort}
+fi
+echo Core is used from ${coreUrl}
+
+# build the frontend so it connects to the passed core
+HASS_URL="$coreUrl" ./script/develop &
+
+# serve the frontend
+yarn dlx serve -l $frontendPort ./hass_frontend -s &
+
+# keep the script running while serving
+wait

src/auth/ha-auth-flow.ts

@@ -30,17 +30,17 @@ type State = "loading" | "error" | "step";
 export class HaAuthFlow extends LitElement {
   @property({ attribute: false }) public authProvider?: AuthProvider;
 
-  @property() public clientId?: string;
+  @property({ attribute: false }) public clientId?: string;
 
-  @property() public redirectUri?: string;
+  @property({ attribute: false }) public redirectUri?: string;
 
-  @property() public oauth2State?: string;
+  @property({ attribute: false }) public oauth2State?: string;
 
   @property({ attribute: false }) public localize!: LocalizeFunc;
 
   @property({ attribute: false }) public step?: DataEntryFlowStep;
 
-  @property({ type: Boolean }) public initStoreToken = false;
+  @property({ attribute: false }) public initStoreToken = false;
 
   @state() private _storeToken = false;
 

src/auth/ha-authorize.ts

@@ -21,13 +21,13 @@ const appNames = {
 
 @customElement("ha-authorize")
 export class HaAuthorize extends litLocalizeLiteMixin(LitElement) {
-  @property() public clientId?: string;
+  @property({ attribute: false }) public clientId?: string;
 
-  @property() public redirectUri?: string;
+  @property({ attribute: false }) public redirectUri?: string;
 
-  @property() public oauth2State?: string;
+  @property({ attribute: false }) public oauth2State?: string;
 
-  @property() public translationFragment = "page-authorize";
+  @property({ attribute: false }) public translationFragment = "page-authorize";
 
   @state() private _authProvider?: AuthProvider;
 
@@ -202,9 +202,9 @@ export class HaAuthorize extends litLocalizeLiteMixin(LitElement) {
         <ha-language-picker
           .value=${this.language}
           .label=${""}
-          nativeName
+          native-name
           @value-changed=${this._languageChanged}
-          inlineArrow
+          inline-arrow
         ></ha-language-picker>
         <a
           href="https://www.home-assistant.io/docs/authentication/"
@@ -327,7 +327,7 @@ export class HaAuthorize extends litLocalizeLiteMixin(LitElement) {
     this.language = language;
 
     try {
-      localStorage.setItem("selectedLanguage", JSON.stringify(language));
+      window.localStorage.setItem("selectedLanguage", JSON.stringify(language));
     } catch (err: any) {
       // Ignore
     }

src/common/auth/token_storage.ts

@@ -1,8 +1,6 @@
 import type { AuthData } from "home-assistant-js-websocket";
 import { extractSearchParam } from "../url/search-params";
 
-const storage = window.localStorage || {};
-
 declare global {
   interface Window {
     __tokenCache: {
@@ -38,9 +36,15 @@ export function saveTokens(tokens: AuthData | null) {
 
   if (tokenCache.writeEnabled) {
     try {
-      storage.hassTokens = JSON.stringify(tokens);
+      window.localStorage.setItem("hassTokens", JSON.stringify(tokens));
     } catch (err: any) {
       // write failed, ignore it. Happens if storage is full or private mode.
+      // eslint-disable-next-line no-console
+      console.warn(
+        "Failed to store tokens; Are you in private mode or is your storage full?"
+      );
+      // eslint-disable-next-line no-console
+      console.error("Error storing tokens:", err);
     }
   }
 }
@@ -51,12 +55,11 @@ export function enableWrite() {
     saveTokens(tokenCache.tokens);
   }
 }
+
 export function loadTokens() {
   if (tokenCache.tokens === undefined) {
     try {
-      // Delete the old token cache.
-      delete storage.tokens;
-      const tokens = storage.hassTokens;
+      const tokens = window.localStorage.getItem("hassTokens");
       if (tokens) {
         tokenCache.tokens = JSON.parse(tokens);
         tokenCache.writeEnabled = true;

src/common/color/convert-color.ts

@@ -25,9 +25,11 @@ export const rgb2hex = (rgb: [number, number, number]): string =>
 // Copyright (c) 2011-2019, Gregor Aisch
 
 // Constants for XYZ and LAB conversion
+/* eslint-disable @typescript-eslint/naming-convention */
 const Xn = 0.95047;
 const Yn = 1;
 const Zn = 1.08883;
+/* eslint-enable @typescript-eslint/naming-convention */
 
 const t0 = 0.137931034; // 4 / 29
 const t1 = 0.206896552; // 6 / 29

src/common/datetime/format_duration.ts

@@ -1,4 +1,3 @@
-import { DurationFormat } from "@formatjs/intl-durationformat";
 import type { DurationInput } from "@formatjs/intl-durationformat/src/types";
 import memoizeOne from "memoize-one";
 import type { HaDurationData } from "../../components/ha-duration-input";
@@ -49,7 +48,7 @@ export const formatNumericDuration = (
 
 const formatDurationLongMem = memoizeOne(
   (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
+    new Intl.DurationFormat(locale.language, {
       style: "long",
     })
 );
@@ -61,7 +60,7 @@ export const formatDurationLong = (
 
 const formatDigitalDurationMem = memoizeOne(
   (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
+    new Intl.DurationFormat(locale.language, {
       style: "digital",
       hoursDisplay: "auto",
     })
@@ -72,13 +71,13 @@ export const formatDurationDigital = (
   duration: HaDurationData
 ) => formatDigitalDurationMem(locale).format(duration);
 
-export const DURATION_UNITS = ["ms", "s", "min", "h", "d"] as const;
+export const DURATION_UNITS = ["min", "h", "d"] as const;
 
 type DurationUnit = (typeof DURATION_UNITS)[number];
 
 const formatDurationDayMem = memoizeOne(
   (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
+    new Intl.DurationFormat(locale.language, {
       style: "narrow",
       daysDisplay: "always",
     })
@@ -86,7 +85,7 @@ const formatDurationDayMem = memoizeOne(
 
 const formatDurationHourMem = memoizeOne(
   (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
+    new Intl.DurationFormat(locale.language, {
       style: "narrow",
       hoursDisplay: "always",
     })
@@ -94,28 +93,12 @@ const formatDurationHourMem = memoizeOne(
 
 const formatDurationMinuteMem = memoizeOne(
   (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
+    new Intl.DurationFormat(locale.language, {
       style: "narrow",
       minutesDisplay: "always",
     })
 );
 
-const formatDurationSecondMem = memoizeOne(
-  (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
-      style: "narrow",
-      secondsDisplay: "always",
-    })
-);
-
-const formatDurationMillisecondMem = memoizeOne(
-  (locale: FrontendLocaleData) =>
-    new DurationFormat(locale.language, {
-      style: "narrow",
-      millisecondsDisplay: "always",
-    })
-);
-
 export const formatDuration = (
   locale: FrontendLocaleData,
   duration: string,
@@ -155,22 +138,6 @@ export const formatDuration = (
       };
       return formatDurationMinuteMem(locale).format(input);
     }
-    case "s": {
-      const seconds = Math.floor(value);
-      const milliseconds = Math.floor((value - seconds) * 1000);
-      const input: DurationInput = {
-        seconds,
-        milliseconds,
-      };
-      return formatDurationSecondMem(locale).format(input);
-    }
-    case "ms": {
-      const milliseconds = Math.floor(value);
-      const input: DurationInput = {
-        milliseconds,
-      };
-      return formatDurationMillisecondMem(locale).format(input);
-    }
     default:
       throw new Error("Invalid duration unit");
   }

src/common/dom/fire_event.ts

@@ -29,7 +29,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 declare global {
-  // eslint-disable-next-line
   interface HASSDomEvents {}
 }
 

src/common/dom/scroll-to-target.ts

@@ -14,10 +14,8 @@ export default function scrollToTarget(element, target) {
   const top = 0;
   const scroller = target;
   const easingFn = function easeOutQuad(t, b, c, d) {
-    /* eslint-disable no-param-reassign, space-infix-ops, no-mixed-operators */
     t /= d;
     return -c * t * (t - 2) + b;
-    /* eslint-enable no-param-reassign, space-infix-ops, no-mixed-operators */
   };
   const animationId = Math.random();
   const duration = 200;

src/common/entity/compute_state_display.ts

@@ -56,13 +56,15 @@ export const computeStateDisplayFromEntityAttributes = (
   }
 
   const domain = computeDomain(entityId);
-
+  const is_number_domain =
+    domain === "counter" || domain === "number" || domain === "input_number";
   // Entities with a `unit_of_measurement` or `state_class` are numeric values and should use `formatNumber`
   if (
     isNumericFromAttributes(
       attributes,
       domain === "sensor" ? sensorNumericDeviceClasses : []
-    )
+    ) ||
+    is_number_domain
   ) {
     // state is duration
     if (
@@ -165,20 +167,6 @@ export const computeStateDisplayFromEntityAttributes = (
     }
   }
 
-  // `counter` `number` and `input_number` domains do not have a unit of measurement but should still use `formatNumber`
-  if (
-    domain === "counter" ||
-    domain === "number" ||
-    domain === "input_number"
-  ) {
-    // Format as an integer if the value and step are integers
-    return formatNumber(
-      state,
-      locale,
-      getNumberFormatOptions({ state, attributes } as HassEntity, entity)
-    );
-  }
-
   // state is a timestamp
   if (
     [

src/common/navigate.ts

@@ -1,4 +1,3 @@
-import { historyPromise } from "../state/url-sync-mixin";
 import { fireEvent } from "./dom/fire_event";
 import { mainWindow } from "./dom/get_main_window";
 
@@ -17,11 +16,6 @@ export interface NavigateOptions {
 export const navigate = (path: string, options?: NavigateOptions) => {
   const replace = options?.replace || false;
 
-  if (historyPromise) {
-    historyPromise.then(() => navigate(path, options));
-    return;
-  }
-
   if (__DEMO__) {
     if (replace) {
       mainWindow.history.replaceState(

src/common/translations/entity-state.ts

@@ -12,7 +12,7 @@ export type FormatEntityAttributeValueFunc = (
   attribute: string,
   value?: any
 ) => string;
-export type formatEntityAttributeNameFunc = (
+export type FormatEntityAttributeNameFunc = (
   stateObj: HassEntity,
   attribute: string
 ) => string;
@@ -26,7 +26,7 @@ export const computeFormatFunctions = async (
 ): Promise<{
   formatEntityState: FormatEntityStateFunc;
   formatEntityAttributeValue: FormatEntityAttributeValueFunc;
-  formatEntityAttributeName: formatEntityAttributeNameFunc;
+  formatEntityAttributeName: FormatEntityAttributeNameFunc;
 }> => {
   const { computeStateDisplay } = await import(
     "../entity/compute_state_display"

src/common/translations/localize.ts

@@ -94,6 +94,7 @@ export const computeLocalize = async <Keys extends string = LocalizeKeys>(
   resources: Resources,
   formats?: FormatsType
 ): Promise<LocalizeFunc<Keys>> => {
+  // eslint-disable-next-line @typescript-eslint/naming-convention
   const { IntlMessageFormat } = await import("intl-messageformat");
   await polyfillLocaleData(language);
 

src/components/chart/ha-chart-base.ts

@@ -53,9 +53,10 @@ export class HaChartBase extends LitElement {
 
   @property({ type: Number }) public height?: number;
 
-  @property({ type: Number }) public paddingYAxis = 0;
+  @property({ attribute: false, type: Number }) public paddingYAxis = 0;
 
-  @property({ type: Boolean }) public externalHidden = false;
+  @property({ attribute: "external-hidden", type: Boolean })
+  public externalHidden = false;
 
   @state() private _chartHeight?: number;
 
@@ -316,6 +317,7 @@ export class HaChartBase extends LitElement {
       .getContext("2d")!;
     this._loading = true;
     try {
+      // eslint-disable-next-line @typescript-eslint/naming-convention
       const ChartConstructor = (await import("../../resources/chartjs")).Chart;
 
       const computedStyles = getComputedStyle(this);

src/components/chart/state-history-chart-line.ts

@@ -32,25 +32,28 @@ export class StateHistoryChartLine extends LitElement {
 
   @property() public identifier?: string;
 
-  @property({ type: Boolean }) public showNames = true;
+  @property({ attribute: "show-names", type: Boolean })
+  public showNames = true;
 
-  @property({ type: Boolean }) public clickForMoreInfo = true;
+  @property({ attribute: "click-for-more-info", type: Boolean })
+  public clickForMoreInfo = true;
 
   @property({ attribute: false }) public startTime!: Date;
 
   @property({ attribute: false }) public endTime!: Date;
 
-  @property({ type: Number }) public paddingYAxis = 0;
+  @property({ attribute: false, type: Number }) public paddingYAxis = 0;
 
-  @property({ type: Number }) public chartIndex?;
+  @property({ attribute: false, type: Number }) public chartIndex?;
 
-  @property({ type: Boolean }) public logarithmicScale = false;
+  @property({ attribute: "logarithmic-scale", type: Boolean })
+  public logarithmicScale = false;
 
-  @property({ type: Number }) public minYAxis?: number;
+  @property({ attribute: false, type: Number }) public minYAxis?: number;
 
-  @property({ type: Number }) public maxYAxis?: number;
+  @property({ attribute: false, type: Number }) public maxYAxis?: number;
 
-  @property({ type: Boolean }) public fitYData = false;
+  @property({ attribute: "fit-y-data", type: Boolean }) public fitYData = false;
 
   @state() private _chartData?: ChartData<"line">;
 

src/components/chart/state-history-chart-timeline.ts

@@ -30,9 +30,10 @@ export class StateHistoryChartTimeline extends LitElement {
 
   @property() public identifier?: string;
 
-  @property({ type: Boolean }) public showNames = true;
+  @property({ attribute: "show-names", type: Boolean }) public showNames = true;
 
-  @property({ type: Boolean }) public clickForMoreInfo = true;
+  @property({ attribute: "click-for-more-info", type: Boolean })
+  public clickForMoreInfo = true;
 
   @property({ type: Boolean }) public chunked = false;
 
@@ -40,9 +41,9 @@ export class StateHistoryChartTimeline extends LitElement {
 
   @property({ attribute: false }) public endTime!: Date;
 
-  @property({ type: Number }) public paddingYAxis = 0;
+  @property({ attribute: false, type: Number }) public paddingYAxis = 0;
 
-  @property({ type: Number }) public chartIndex?;
+  @property({ attribute: false, type: Number }) public chartIndex?;
 
   @state() private _chartData?: ChartData<"timeline">;
 

src/components/chart/state-history-charts.ts

@@ -1,5 +1,5 @@
 import type { CSSResultGroup, PropertyValues } from "lit";
-import { css, html, LitElement, nothing } from "lit";
+import { css, html, LitElement } from "lit";
 import {
   customElement,
   eventOptions,
@@ -7,6 +7,7 @@ import {
   queryAll,
   state,
 } from "lit/decorators";
+import type { RenderItemFunction } from "@lit-labs/virtualizer/virtualize";
 import { isComponentLoaded } from "../../common/config/is_component_loaded";
 import { restoreScroll } from "../../common/decorators/restore-scroll";
 import type {
@@ -58,21 +59,24 @@ export class StateHistoryCharts extends LitElement {
 
   @property({ type: Boolean, attribute: "up-to-now" }) public upToNow = false;
 
-  @property({ type: Number }) public hoursToShow?: number;
+  @property({ attribute: false, type: Number }) public hoursToShow?: number;
 
-  @property({ type: Boolean }) public showNames = true;
+  @property({ attribute: "show-names", type: Boolean }) public showNames = true;
 
-  @property({ type: Boolean }) public clickForMoreInfo = true;
+  @property({ attribute: "click-for-more-info", type: Boolean })
+  public clickForMoreInfo = true;
 
-  @property({ type: Boolean }) public isLoadingData = false;
+  @property({ attribute: "is-loading-data", type: Boolean })
+  public isLoadingData = false;
 
-  @property({ type: Boolean }) public logarithmicScale = false;
+  @property({ attribute: "logarithmic-scale", type: Boolean })
+  public logarithmicScale = false;
 
-  @property({ type: Number }) public minYAxis?: number;
+  @property({ attribute: false, type: Number }) public minYAxis?: number;
 
-  @property({ type: Number }) public maxYAxis?: number;
+  @property({ attribute: false, type: Number }) public maxYAxis?: number;
 
-  @property({ type: Boolean }) public fitYData = false;
+  @property({ attribute: "fit-y-data", type: Boolean }) public fitYData = false;
 
   private _computedStartTime!: Date;
 
@@ -122,6 +126,7 @@ export class StateHistoryCharts extends LitElement {
         ).concat(this.historyData.line)
       : this.historyData.line;
 
+    // eslint-disable-next-line lit/no-this-assign-in-render
     this._chartCount = combinedItems.length;
 
     return this.virtualize
@@ -139,12 +144,12 @@ export class StateHistoryCharts extends LitElement {
         )}`;
   }
 
-  private _renderHistoryItem = (
-    item: TimelineEntity[] | LineChartUnit,
-    index: number
-  ) => {
+  private _renderHistoryItem: RenderItemFunction<
+    TimelineEntity[] | LineChartUnit
+  > = (item, index) => {
     if (!item || index === undefined) {
-      return nothing;
+      // eslint-disable-next-line lit/prefer-nothing
+      return html``;
     }
     if (!Array.isArray(item)) {
       return html`<div class="entry-container">

src/components/chart/statistics-chart.ts

@@ -63,28 +63,28 @@ export class StatisticsChart extends LitElement {
 
   @property({ attribute: false }) public endTime?: Date;
 
-  @property({ type: Array }) public statTypes: Array<StatisticType> = [
-    "sum",
-    "min",
-    "mean",
-    "max",
-  ];
+  @property({ attribute: false, type: Array })
+  public statTypes: Array<StatisticType> = ["sum", "min", "mean", "max"];
 
-  @property() public chartType: ChartType = "line";
+  @property({ attribute: false }) public chartType: ChartType = "line";
 
-  @property({ type: Number }) public minYAxis?: number;
+  @property({ attribute: false, type: Number }) public minYAxis?: number;
 
-  @property({ type: Number }) public maxYAxis?: number;
+  @property({ attribute: false, type: Number }) public maxYAxis?: number;
 
-  @property({ type: Boolean }) public fitYData = false;
+  @property({ attribute: "fit-y-data", type: Boolean }) public fitYData = false;
 
-  @property({ type: Boolean }) public hideLegend = false;
+  @property({ attribute: "hide-legend", type: Boolean }) public hideLegend =
+    false;
 
-  @property({ type: Boolean }) public logarithmicScale = false;
+  @property({ attribute: "logarithmic-scale", type: Boolean })
+  public logarithmicScale = false;
 
-  @property({ type: Boolean }) public isLoadingData = false;
+  @property({ attribute: "is-loading-data", type: Boolean })
+  public isLoadingData = false;
 
-  @property({ type: Boolean }) public clickForMoreInfo = true;
+  @property({ attribute: "click-for-more-info", type: Boolean })
+  public clickForMoreInfo = true;
 
   @property() public period?: string;
 
@@ -167,7 +167,7 @@ export class StatisticsChart extends LitElement {
 
     return html`
       <ha-chart-base
-        externalHidden
+        external-hidden
         .hass=${this.hass}
         .data=${this._chartData}
         .extraData=${this._chartDatasetExtra}

src/components/data-table/dialog-data-table-settings.ts

@@ -185,7 +185,7 @@ export class DialogDataTableSettings extends LitElement {
     this._params!.onUpdate(this._columnOrder, this._hiddenColumns);
   }
 
-  _toggle(ev) {
+  private _toggle(ev) {
     if (!this._params) {
       return;
     }
@@ -266,7 +266,7 @@ export class DialogDataTableSettings extends LitElement {
     this._params!.onUpdate(this._columnOrder, this._hiddenColumns);
   }
 
-  _reset() {
+  private _reset() {
     this._columnOrder = undefined;
     this._hiddenColumns = undefined;
 

src/components/data-table/ha-data-table.ts

@@ -116,7 +116,7 @@ export class HaDataTable extends LitElement {
 
   @property({ type: Boolean }) public clickable = false;
 
-  @property({ type: Boolean }) public hasFab = false;
+  @property({ attribute: "has-fab", type: Boolean }) public hasFab = false;
 
   /**
    * Add an extra row at the bottom of the data table
@@ -127,24 +127,25 @@ export class HaDataTable extends LitElement {
   @property({ type: Boolean, attribute: "auto-height" })
   public autoHeight = false;
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property({ type: String }) public id = "id";
 
-  @property({ type: String }) public noDataText?: string;
+  @property({ attribute: false, type: String }) public noDataText?: string;
 
-  @property({ type: String }) public searchLabel?: string;
+  @property({ attribute: false, type: String }) public searchLabel?: string;
 
   @property({ type: Boolean, attribute: "no-label-float" })
   public noLabelFloat? = false;
 
   @property({ type: String }) public filter = "";
 
-  @property() public groupColumn?: string;
+  @property({ attribute: false }) public groupColumn?: string;
 
   @property({ attribute: false }) public groupOrder?: string[];
 
-  @property() public sortColumn?: string;
+  @property({ attribute: false }) public sortColumn?: string;
 
-  @property() public sortDirection: SortingDirection = null;
+  @property({ attribute: false }) public sortDirection: SortingDirection = null;
 
   @property({ attribute: false }) public initialCollapsedGroups?: string[];
 

src/components/date-range-picker.ts

@@ -11,6 +11,7 @@ import {
 } from "../common/datetime/localize_date";
 import { mainWindow } from "../common/dom/get_main_window";
 
+// eslint-disable-next-line @typescript-eslint/naming-convention
 const CustomDateRangePicker = Vue.extend({
   mixins: [DateRangePicker],
   methods: {
@@ -53,6 +54,7 @@ const CustomDateRangePicker = Vue.extend({
   },
 });
 
+// eslint-disable-next-line @typescript-eslint/naming-convention
 const Component = Vue.extend({
   props: {
     timePicker: {
@@ -154,6 +156,7 @@ const Component = Vue.extend({
 });
 
 // Assertion corrects HTMLElement type from package
+// eslint-disable-next-line @typescript-eslint/naming-convention
 const WrappedElement = wrap(
   Vue,
   Component

src/components/device/ha-device-automation-picker.ts

@@ -24,7 +24,7 @@ export abstract class HaDeviceAutomationPicker<
 
   @property() public label?: string;
 
-  @property() public deviceId?: string;
+  @property({ attribute: false }) public deviceId?: string;
 
   @property({ type: Object }) public value?: T;
 

src/components/entity/ha-entities-picker.ts

@@ -75,7 +75,7 @@ class HaEntitiesPickerLight extends LitElement {
   @property({ attribute: false })
   public entityFilter?: HaEntityPickerEntityFilterFunc;
 
-  @property({ type: Array }) public createDomains?: string[];
+  @property({ attribute: false, type: Array }) public createDomains?: string[];
 
   protected render() {
     if (!this.hass) {

src/components/entity/ha-entity-attribute-picker.ts

@@ -13,7 +13,7 @@ export type HaEntityPickerEntityFilterFunc = (entityId: HassEntity) => boolean;
 class HaEntityAttributePicker extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
-  @property() public entityId?: string;
+  @property({ attribute: false }) public entityId?: string;
 
   /**
    * List of attributes to be hidden.
@@ -23,6 +23,7 @@ class HaEntityAttributePicker extends LitElement {
   @property({ type: Array, attribute: "hide-attributes" })
   public hideAttributes?: string[];
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property({ type: Boolean }) public autofocus = false;
 
   @property({ type: Boolean }) public disabled = false;

src/components/entity/ha-entity-picker.ts

@@ -34,6 +34,7 @@ const CREATE_ID = "___create-new-entity___";
 export class HaEntityPicker extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property({ type: Boolean }) public autofocus = false;
 
   @property({ type: Boolean }) public disabled = false;
@@ -49,7 +50,7 @@ export class HaEntityPicker extends LitElement {
 
   @property() public helper?: string;
 
-  @property({ type: Array }) public createDomains?: string[];
+  @property({ attribute: false, type: Array }) public createDomains?: string[];
 
   /**
    * Show entities from specific domains.
@@ -102,7 +103,8 @@ export class HaEntityPicker extends LitElement {
   @property({ attribute: false })
   public entityFilter?: HaEntityPickerEntityFilterFunc;
 
-  @property({ type: Boolean }) public hideClearIcon = false;
+  @property({ attribute: "hide-clear-icon", type: Boolean })
+  public hideClearIcon = false;
 
   @property({ attribute: "item-label-path" }) public itemLabelPath =
     "friendly_name";

src/components/entity/ha-entity-state-content-picker.ts

@@ -79,6 +79,7 @@ class HaEntityStatePicker extends LitElement {
 
   @property({ attribute: false }) public entityId?: string;
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property({ type: Boolean }) public autofocus = false;
 
   @property({ type: Boolean }) public disabled = false;

src/components/entity/ha-entity-state-picker.ts

@@ -14,12 +14,13 @@ export type HaEntityPickerEntityFilterFunc = (entityId: HassEntity) => boolean;
 class HaEntityStatePicker extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
-  @property() public entityId?: string;
+  @property({ attribute: false }) public entityId?: string;
 
   @property() public attribute?: string;
 
   @property({ attribute: false }) public extraOptions?: any[];
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property({ type: Boolean }) public autofocus = false;
 
   @property({ type: Boolean }) public disabled = false;

src/components/entity/ha-state-label-badge.ts

@@ -55,7 +55,7 @@ export class HaStateLabelBadge extends LitElement {
 
   @property() public image?: string;
 
-  @property({ type: Boolean }) public showName = false;
+  @property({ attribute: "show-name", type: Boolean }) public showName = false;
 
   @state() private _timerTimeRemaining?: number;
 
@@ -66,13 +66,13 @@ export class HaStateLabelBadge extends LitElement {
   public connectedCallback(): void {
     super.connectedCallback();
     this._connected = true;
-    this.startInterval(this.state);
+    this._startInterval(this.state);
   }
 
   public disconnectedCallback(): void {
     super.disconnectedCallback();
     this._connected = false;
-    this.clearInterval();
+    this._clearInterval();
   }
 
   protected render(): TemplateResult {
@@ -151,7 +151,7 @@ export class HaStateLabelBadge extends LitElement {
     super.updated(changedProperties);
 
     if (this._connected && changedProperties.has("state")) {
-      this.startInterval(this.state);
+      this._startInterval(this.state);
     }
   }
 
@@ -237,28 +237,28 @@ export class HaStateLabelBadge extends LitElement {
     return entityState.attributes.unit_of_measurement || null;
   }
 
-  private clearInterval() {
+  private _clearInterval() {
     if (this._updateRemaining) {
       clearInterval(this._updateRemaining);
       this._updateRemaining = undefined;
     }
   }
 
-  private startInterval(stateObj) {
-    this.clearInterval();
+  private _startInterval(stateObj) {
+    this._clearInterval();
     if (stateObj && computeStateDomain(stateObj) === "timer") {
-      this.calculateTimerRemaining(stateObj);
+      this._calculateTimerRemaining(stateObj);
 
       if (stateObj.state === "active") {
         this._updateRemaining = window.setInterval(
-          () => this.calculateTimerRemaining(this.state),
+          () => this._calculateTimerRemaining(this.state),
           1000
         );
       }
     }
   }
 
-  private calculateTimerRemaining(stateObj) {
+  private _calculateTimerRemaining(stateObj) {
     this._timerTimeRemaining = timerTimeRemaining(stateObj);
   }
 

src/components/entity/ha-statistic-picker.ts

@@ -39,7 +39,8 @@ export class HaStatisticPicker extends LitElement {
   @property({ type: Boolean, attribute: "allow-custom-entity" })
   public allowCustomEntity;
 
-  @property({ type: Array }) public statisticIds?: StatisticsMetaData[];
+  @property({ attribute: false, type: Array })
+  public statisticIds?: StatisticsMetaData[];
 
   @property({ type: Boolean }) public disabled = false;
 
@@ -84,7 +85,8 @@ export class HaStatisticPicker extends LitElement {
   @property({ type: Array, attribute: "exclude-statistics" })
   public excludeStatistics?: string[];
 
-  @property() public helpMissingEntityUrl = "/more-info/statistics/";
+  @property({ attribute: false }) public helpMissingEntityUrl =
+    "/more-info/statistics/";
 
   @state() private _opened?: boolean;
 

src/components/entity/ha-statistics-picker.ts

@@ -12,7 +12,7 @@ class HaStatisticsPicker extends LitElement {
 
   @property({ type: Array }) public value?: string[];
 
-  @property({ type: Array }) public statisticIds?: string[];
+  @property({ attribute: false, type: Array }) public statisticIds?: string[];
 
   @property({ attribute: "statistic-types" })
   public statisticTypes?: "mean" | "sum";

src/components/entity/state-badge.ts

@@ -22,9 +22,9 @@ export class StateBadge extends LitElement {
 
   @property({ attribute: false }) public stateObj?: HassEntity;
 
-  @property() public overrideIcon?: string;
+  @property({ attribute: false }) public overrideIcon?: string;
 
-  @property() public overrideImage?: string;
+  @property({ attribute: false }) public overrideImage?: string;
 
   // Cannot be a boolean attribute because undefined is treated different than
   // false.  When it is undefined, state is still colored for light entities.

src/components/entity/state-info.ts

@@ -14,7 +14,7 @@ class StateInfo extends LitElement {
 
   @property({ attribute: false }) public stateObj?: HassEntity;
 
-  @property({ type: Boolean }) public inDialog = false;
+  @property({ attribute: "in-dialog", type: Boolean }) public inDialog = false;
 
   @property() public color?: string;
 
@@ -32,7 +32,7 @@ class StateInfo extends LitElement {
         .color=${this.color}
       ></state-badge>
       <div class="info">
-        <div class="name" .title=${name} .inDialog=${this.inDialog}>
+        <div class="name ${this.inDialog ? "in-dialog" : ""}" .title=${name}>
           ${name}
         </div>
         ${this.inDialog
@@ -108,7 +108,7 @@ class StateInfo extends LitElement {
         text-overflow: ellipsis;
       }
 
-      .name[inDialog],
+      .name.in-dialog,
       :host([secondary-line]) .name {
         line-height: 20px;
       }

src/components/ha-alert.ts

@@ -27,6 +27,7 @@ declare global {
 
 @customElement("ha-alert")
 class HaAlert extends LitElement {
+  // eslint-disable-next-line lit/no-native-attributes
   @property() public title = "";
 
   @property({ attribute: "alert-type" }) public alertType:
@@ -63,7 +64,7 @@ class HaAlert extends LitElement {
             <slot name="action">
               ${this.dismissable
                 ? html`<ha-icon-button
-                    @click=${this._dismiss_clicked}
+                    @click=${this._dismissClicked}
                     label="Dismiss alert"
                     .path=${mdiClose}
                   ></ha-icon-button>`
@@ -75,7 +76,7 @@ class HaAlert extends LitElement {
     `;
   }
 
-  private _dismiss_clicked() {
+  private _dismissClicked() {
     fireEvent(this, "alert-dismissed-clicked");
   }
 

src/components/ha-ansi-to-html.ts

@@ -183,7 +183,7 @@ export class HaAnsiToHtml extends LitElement {
 
     /* eslint-disable no-cond-assign */
     let match;
-    // eslint-disable-next-line
+
     while ((match = re.exec(line)) !== null) {
       const j = match!.index;
       const substring = line.substring(i, j);

src/components/ha-assist-chat.ts

@@ -0,0 +1,639 @@
+import type { CSSResultGroup, PropertyValues, TemplateResult } from "lit";
+import { css, LitElement, html, nothing } from "lit";
+import { mdiAlertCircle, mdiMicrophone, mdiSend } from "@mdi/js";
+import { customElement, property, query, state } from "lit/decorators";
+import { classMap } from "lit/directives/class-map";
+import type { HomeAssistant } from "../types";
+import {
+  runAssistPipeline,
+  type AssistPipeline,
+} from "../data/assist_pipeline";
+import { supportsFeature } from "../common/entity/supports-feature";
+import { ConversationEntityFeature } from "../data/conversation";
+import { AudioRecorder } from "../util/audio-recorder";
+import "./ha-alert";
+import "./ha-textfield";
+import type { HaTextField } from "./ha-textfield";
+import { documentationUrl } from "../util/documentation-url";
+import { showAlertDialog } from "../dialogs/generic/show-dialog-box";
+
+interface AssistMessage {
+  who: string;
+  text?: string | TemplateResult;
+  error?: boolean;
+}
+
+@customElement("ha-assist-chat")
+export class HaAssistChat extends LitElement {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @property({ attribute: false }) public pipeline?: AssistPipeline;
+
+  @property({ type: Boolean, attribute: false })
+  public startListening?: boolean;
+
+  @query("#message-input") private _messageInput!: HaTextField;
+
+  @query("#scroll-container") private _scrollContainer!: HTMLDivElement;
+
+  @state() private _conversation: AssistMessage[] = [];
+
+  @state() private _showSendButton = false;
+
+  @state() private _processing = false;
+
+  private _conversationId: string | null = null;
+
+  private _audioRecorder?: AudioRecorder;
+
+  private _audioBuffer?: Int16Array[];
+
+  private _audio?: HTMLAudioElement;
+
+  private _stt_binary_handler_id?: number | null;
+
+  protected willUpdate(changedProperties: PropertyValues): void {
+    if (!this.hasUpdated || changedProperties.has("pipeline")) {
+      this._conversation = [
+        {
+          who: "hass",
+          text: this.hass.localize("ui.dialogs.voice_command.how_can_i_help"),
+        },
+      ];
+    }
+  }
+
+  protected firstUpdated(changedProperties: PropertyValues): void {
+    super.firstUpdated(changedProperties);
+    if (
+      this.startListening &&
+      this.pipeline &&
+      this.pipeline.stt_engine &&
+      AudioRecorder.isSupported
+    ) {
+      this._toggleListening();
+    }
+    setTimeout(() => this._messageInput.focus(), 0);
+  }
+
+  protected updated(changedProps: PropertyValues) {
+    super.updated(changedProps);
+    if (changedProps.has("_conversation")) {
+      this._scrollMessagesBottom();
+    }
+  }
+
+  public disconnectedCallback() {
+    super.disconnectedCallback();
+    this._audioRecorder?.close();
+    this._audioRecorder = undefined;
+    this._audio?.pause();
+    this._conversation = [];
+    this._conversationId = null;
+  }
+
+  protected render(): TemplateResult {
+    const controlHA = !this.pipeline
+      ? false
+      : this.pipeline.prefer_local_intents ||
+        (this.hass.states[this.pipeline.conversation_engine]
+          ? supportsFeature(
+              this.hass.states[this.pipeline.conversation_engine],
+              ConversationEntityFeature.CONTROL
+            )
+          : true);
+    const supportsMicrophone = AudioRecorder.isSupported;
+    const supportsSTT = this.pipeline?.stt_engine;
+
+    return html`
+      ${controlHA
+        ? nothing
+        : html`
+            <ha-alert>
+              ${this.hass.localize(
+                "ui.dialogs.voice_command.conversation_no_control"
+              )}
+            </ha-alert>
+          `}
+      <div class="messages">
+        <div class="messages-container" id="scroll-container">
+          ${this._conversation!.map(
+            // New lines matter for messages
+            // prettier-ignore
+            (message) => html`
+                <div class="message ${classMap({ error: !!message.error, [message.who]: true })}">${message.text}</div>
+              `
+          )}
+        </div>
+      </div>
+      <div class="input" slot="primaryAction">
+        <ha-textfield
+          id="message-input"
+          @keyup=${this._handleKeyUp}
+          @input=${this._handleInput}
+          .label=${this.hass.localize(`ui.dialogs.voice_command.input_label`)}
+          .iconTrailing=${true}
+        >
+          <div slot="trailingIcon">
+            ${this._showSendButton || !supportsSTT
+              ? html`
+                  <ha-icon-button
+                    class="listening-icon"
+                    .path=${mdiSend}
+                    @click=${this._handleSendMessage}
+                    .disabled=${this._processing}
+                    .label=${this.hass.localize(
+                      "ui.dialogs.voice_command.send_text"
+                    )}
+                  >
+                  </ha-icon-button>
+                `
+              : html`
+                  ${this._audioRecorder?.active
+                    ? html`
+                        <div class="bouncer">
+                          <div class="double-bounce1"></div>
+                          <div class="double-bounce2"></div>
+                        </div>
+                      `
+                    : nothing}
+
+                  <div class="listening-icon">
+                    <ha-icon-button
+                      .path=${mdiMicrophone}
+                      @click=${this._handleListeningButton}
+                      .disabled=${this._processing}
+                      .label=${this.hass.localize(
+                        "ui.dialogs.voice_command.start_listening"
+                      )}
+                    >
+                    </ha-icon-button>
+                    ${!supportsMicrophone
+                      ? html`
+                          <ha-svg-icon
+                            .path=${mdiAlertCircle}
+                            class="unsupported"
+                          ></ha-svg-icon>
+                        `
+                      : null}
+                  </div>
+                `}
+          </div>
+        </ha-textfield>
+      </div>
+    `;
+  }
+
+  private _scrollMessagesBottom() {
+    const scrollContainer = this._scrollContainer;
+    if (!scrollContainer) {
+      return;
+    }
+    scrollContainer.scrollTo(0, scrollContainer.scrollHeight);
+  }
+
+  private _handleKeyUp(ev: KeyboardEvent) {
+    const input = ev.target as HaTextField;
+    if (!this._processing && ev.key === "Enter" && input.value) {
+      this._processText(input.value);
+      input.value = "";
+      this._showSendButton = false;
+    }
+  }
+
+  private _handleInput(ev: InputEvent) {
+    const value = (ev.target as HaTextField).value;
+    if (value && !this._showSendButton) {
+      this._showSendButton = true;
+    } else if (!value && this._showSendButton) {
+      this._showSendButton = false;
+    }
+  }
+
+  private _handleSendMessage() {
+    if (this._messageInput.value) {
+      this._processText(this._messageInput.value.trim());
+      this._messageInput.value = "";
+      this._showSendButton = false;
+    }
+  }
+
+  private _handleListeningButton(ev) {
+    ev.stopPropagation();
+    ev.preventDefault();
+    this._toggleListening();
+  }
+
+  private async _toggleListening() {
+    const supportsMicrophone = AudioRecorder.isSupported;
+    if (!supportsMicrophone) {
+      this._showNotSupportedMessage();
+      return;
+    }
+    if (!this._audioRecorder?.active) {
+      this._startListening();
+    } else {
+      this._stopListening();
+    }
+  }
+
+  private _addMessage(message: AssistMessage) {
+    this._conversation = [...this._conversation!, message];
+  }
+
+  private async _showNotSupportedMessage() {
+    this._addMessage({
+      who: "hass",
+      text:
+        // New lines matter for messages
+        // prettier-ignore
+        html`${this.hass.localize(
+          "ui.dialogs.voice_command.not_supported_microphone_browser"
+        )}
+
+        ${this.hass.localize(
+          "ui.dialogs.voice_command.not_supported_microphone_documentation",
+          {
+            documentation_link: html`<a
+                target="_blank"
+                rel="noopener noreferrer"
+                href=${documentationUrl(
+                  this.hass,
+                  "/docs/configuration/securing/#remote-access"
+                )}
+              >${this.hass.localize(
+                  "ui.dialogs.voice_command.not_supported_microphone_documentation_link"
+                )}</a>`,
+          }
+        )}`,
+    });
+  }
+
+  private async _startListening() {
+    this._processing = true;
+    this._audio?.pause();
+    if (!this._audioRecorder) {
+      this._audioRecorder = new AudioRecorder((audio) => {
+        if (this._audioBuffer) {
+          this._audioBuffer.push(audio);
+        } else {
+          this._sendAudioChunk(audio);
+        }
+      });
+    }
+    this._stt_binary_handler_id = undefined;
+    this._audioBuffer = [];
+    const userMessage: AssistMessage = {
+      who: "user",
+      text: "…",
+    };
+    await this._audioRecorder.start();
+
+    this._addMessage(userMessage);
+    this.requestUpdate("_audioRecorder");
+
+    const hassMessage: AssistMessage = {
+      who: "hass",
+      text: "…",
+    };
+    // To make sure the answer is placed at the right user text, we add it before we process it
+    try {
+      const unsub = await runAssistPipeline(
+        this.hass,
+        (event) => {
+          if (event.type === "run-start") {
+            this._stt_binary_handler_id =
+              event.data.runner_data.stt_binary_handler_id;
+          }
+
+          // When we start STT stage, the WS has a binary handler
+          if (event.type === "stt-start" && this._audioBuffer) {
+            // Send the buffer over the WS to the STT engine.
+            for (const buffer of this._audioBuffer) {
+              this._sendAudioChunk(buffer);
+            }
+            this._audioBuffer = undefined;
+          }
+
+          // Stop recording if the server is done with STT stage
+          if (event.type === "stt-end") {
+            this._stt_binary_handler_id = undefined;
+            this._stopListening();
+            userMessage.text = event.data.stt_output.text;
+            this.requestUpdate("_conversation");
+            // To make sure the answer is placed at the right user text, we add it before we process it
+            this._addMessage(hassMessage);
+          }
+
+          if (event.type === "intent-end") {
+            this._conversationId = event.data.intent_output.conversation_id;
+            const plain = event.data.intent_output.response.speech?.plain;
+            if (plain) {
+              hassMessage.text = plain.speech;
+            }
+            this.requestUpdate("_conversation");
+          }
+
+          if (event.type === "tts-end") {
+            const url = event.data.tts_output.url;
+            this._audio = new Audio(url);
+            this._audio.play();
+            this._audio.addEventListener("ended", this._unloadAudio);
+            this._audio.addEventListener("pause", this._unloadAudio);
+            this._audio.addEventListener("canplaythrough", this._playAudio);
+            this._audio.addEventListener("error", this._audioError);
+          }
+
+          if (event.type === "run-end") {
+            this._stt_binary_handler_id = undefined;
+            unsub();
+          }
+
+          if (event.type === "error") {
+            this._stt_binary_handler_id = undefined;
+            if (userMessage.text === "…") {
+              userMessage.text = event.data.message;
+              userMessage.error = true;
+            } else {
+              hassMessage.text = event.data.message;
+              hassMessage.error = true;
+            }
+            this._stopListening();
+            this.requestUpdate("_conversation");
+            unsub();
+          }
+        },
+        {
+          start_stage: "stt",
+          end_stage: this.pipeline?.tts_engine ? "tts" : "intent",
+          input: { sample_rate: this._audioRecorder.sampleRate! },
+          pipeline: this.pipeline?.id,
+          conversation_id: this._conversationId,
+        }
+      );
+    } catch (err: any) {
+      await showAlertDialog(this, {
+        title: "Error starting pipeline",
+        text: err.message || err,
+      });
+      this._stopListening();
+    } finally {
+      this._processing = false;
+    }
+  }
+
+  private _stopListening() {
+    this._audioRecorder?.stop();
+    this.requestUpdate("_audioRecorder");
+    // We're currently STTing, so finish audio
+    if (this._stt_binary_handler_id) {
+      if (this._audioBuffer) {
+        for (const chunk of this._audioBuffer) {
+          this._sendAudioChunk(chunk);
+        }
+      }
+      // Send empty message to indicate we're done streaming.
+      this._sendAudioChunk(new Int16Array());
+      this._stt_binary_handler_id = undefined;
+    }
+    this._audioBuffer = undefined;
+  }
+
+  private _sendAudioChunk(chunk: Int16Array) {
+    this.hass.connection.socket!.binaryType = "arraybuffer";
+
+    // eslint-disable-next-line eqeqeq
+    if (this._stt_binary_handler_id == undefined) {
+      return;
+    }
+    // Turn into 8 bit so we can prefix our handler ID.
+    const data = new Uint8Array(1 + chunk.length * 2);
+    data[0] = this._stt_binary_handler_id;
+    data.set(new Uint8Array(chunk.buffer), 1);
+
+    this.hass.connection.socket!.send(data);
+  }
+
+  private _playAudio = () => {
+    this._audio?.play();
+  };
+
+  private _audioError = () => {
+    showAlertDialog(this, { title: "Error playing audio." });
+    this._audio?.removeAttribute("src");
+  };
+
+  private _unloadAudio = () => {
+    this._audio?.removeAttribute("src");
+    this._audio = undefined;
+  };
+
+  private async _processText(text: string) {
+    this._processing = true;
+    this._audio?.pause();
+    this._addMessage({ who: "user", text });
+    const message: AssistMessage = {
+      who: "hass",
+      text: "…",
+    };
+    // To make sure the answer is placed at the right user text, we add it before we process it
+    this._addMessage(message);
+    try {
+      const unsub = await runAssistPipeline(
+        this.hass,
+        (event) => {
+          if (event.type === "intent-end") {
+            this._conversationId = event.data.intent_output.conversation_id;
+            const plain = event.data.intent_output.response.speech?.plain;
+            if (plain) {
+              message.text = plain.speech;
+            }
+            this.requestUpdate("_conversation");
+            unsub();
+          }
+          if (event.type === "error") {
+            message.text = event.data.message;
+            message.error = true;
+            this.requestUpdate("_conversation");
+            unsub();
+          }
+        },
+        {
+          start_stage: "intent",
+          input: { text },
+          end_stage: "intent",
+          pipeline: this.pipeline?.id,
+          conversation_id: this._conversationId,
+        }
+      );
+    } catch {
+      message.text = this.hass.localize("ui.dialogs.voice_command.error");
+      message.error = true;
+      this.requestUpdate("_conversation");
+    } finally {
+      this._processing = false;
+    }
+  }
+
+  static get styles(): CSSResultGroup {
+    return css`
+      :host {
+        flex: 1;
+        display: flex;
+        flex-direction: column;
+        min-height: var(--ha-assist-chat-min-height, 415px);
+      }
+      ha-textfield {
+        display: block;
+        margin: 0 24px 16px;
+      }
+      .messages {
+        flex: 1;
+        display: block;
+        box-sizing: border-box;
+        position: relative;
+      }
+      .messages-container {
+        position: absolute;
+        bottom: 0px;
+        right: 0px;
+        left: 0px;
+        padding: 24px;
+        box-sizing: border-box;
+        overflow-y: auto;
+        max-height: 100%;
+      }
+      .message {
+        white-space: pre-line;
+        font-size: 18px;
+        clear: both;
+        margin: 8px 0;
+        padding: 8px;
+        border-radius: 15px;
+      }
+
+      @media all and (max-width: 450px), all and (max-height: 500px) {
+        .message {
+          font-size: 16px;
+        }
+      }
+
+      .message p {
+        margin: 0;
+      }
+      .message p:not(:last-child) {
+        margin-bottom: 8px;
+      }
+
+      .message.user {
+        margin-left: 24px;
+        margin-inline-start: 24px;
+        margin-inline-end: initial;
+        float: var(--float-end);
+        text-align: right;
+        border-bottom-right-radius: 0px;
+        background-color: var(--primary-color);
+        color: var(--text-primary-color);
+        direction: var(--direction);
+      }
+
+      .message.hass {
+        margin-right: 24px;
+        margin-inline-end: 24px;
+        margin-inline-start: initial;
+        float: var(--float-start);
+        border-bottom-left-radius: 0px;
+        background-color: var(--secondary-background-color);
+
+        color: var(--primary-text-color);
+        direction: var(--direction);
+      }
+
+      .message.user a {
+        color: var(--text-primary-color);
+      }
+
+      .message.hass a {
+        color: var(--primary-text-color);
+      }
+
+      .message.error {
+        background-color: var(--error-color);
+        color: var(--text-primary-color);
+      }
+
+      .bouncer {
+        width: 48px;
+        height: 48px;
+        position: absolute;
+      }
+      .double-bounce1,
+      .double-bounce2 {
+        width: 48px;
+        height: 48px;
+        border-radius: 50%;
+        background-color: var(--primary-color);
+        opacity: 0.2;
+        position: absolute;
+        top: 0;
+        left: 0;
+        -webkit-animation: sk-bounce 2s infinite ease-in-out;
+        animation: sk-bounce 2s infinite ease-in-out;
+      }
+      .double-bounce2 {
+        -webkit-animation-delay: -1s;
+        animation-delay: -1s;
+      }
+      @-webkit-keyframes sk-bounce {
+        0%,
+        100% {
+          -webkit-transform: scale(0);
+        }
+        50% {
+          -webkit-transform: scale(1);
+        }
+      }
+      @keyframes sk-bounce {
+        0%,
+        100% {
+          transform: scale(0);
+          -webkit-transform: scale(0);
+        }
+        50% {
+          transform: scale(1);
+          -webkit-transform: scale(1);
+        }
+      }
+
+      .listening-icon {
+        position: relative;
+        color: var(--secondary-text-color);
+        margin-right: -24px;
+        margin-inline-end: -24px;
+        margin-inline-start: initial;
+        direction: var(--direction);
+        transform: scaleX(var(--scale-direction));
+      }
+
+      .listening-icon[active] {
+        color: var(--primary-color);
+      }
+
+      .unsupported {
+        color: var(--error-color);
+        position: absolute;
+        --mdc-icon-size: 16px;
+        right: 5px;
+        inset-inline-end: 5px;
+        inset-inline-start: initial;
+        top: 0px;
+      }
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "ha-assist-chat": HaAssistChat;
+  }
+}

src/components/ha-assist-pipeline-picker.ts

@@ -26,7 +26,7 @@ export class HaAssistPipelinePicker extends LitElement {
 
   @property({ type: Boolean }) public required = false;
 
-  @property({ type: Boolean }) public includeLastUsed = false;
+  @property({ attribute: false }) public includeLastUsed = false;
 
   @state() _pipelines?: AssistPipeline[];
 

src/components/ha-attribute-icon.ts

@@ -15,7 +15,7 @@ export class HaAttributeIcon extends LitElement {
 
   @property() public attribute?: string;
 
-  @property() public attributeValue?: string;
+  @property({ attribute: false }) public attributeValue?: string;
 
   @property() public icon?: string;
 

src/components/ha-attributes.ts

@@ -20,7 +20,7 @@ class HaAttributes extends LitElement {
   @state() private _expanded = false;
 
   private get _filteredAttributes() {
-    return this.computeDisplayAttributes(
+    return this._computeDisplayAttributes(
       STATE_ATTRIBUTES.concat(
         this.extraFilters ? this.extraFilters.split(",") : []
       )
@@ -53,7 +53,7 @@ class HaAttributes extends LitElement {
           "ui.components.attributes.expansion_header"
         )}
         outlined
-        @expanded-will-change=${this.expandedChanged}
+        @expanded-will-change=${this._expandedChanged}
       >
         <div class="attribute-container">
           ${this._expanded
@@ -128,7 +128,7 @@ class HaAttributes extends LitElement {
     ];
   }
 
-  private computeDisplayAttributes(filtersArray: string[]): string[] {
+  private _computeDisplayAttributes(filtersArray: string[]): string[] {
     if (!this.stateObj) {
       return [];
     }
@@ -137,7 +137,7 @@ class HaAttributes extends LitElement {
     );
   }
 
-  private expandedChanged(ev) {
+  private _expandedChanged(ev) {
     this._expanded = ev.detail.expanded;
   }
 }

src/components/ha-badge.ts

@@ -98,7 +98,6 @@ export class HaBadge extends LitElement {
         align-items: flex-start;
         padding-inline-start: initial;
         text-align: center;
-        font-family: Roboto;
       }
       .label {
         font-size: 10px;

src/components/ha-base-time-input.ts

@@ -36,7 +36,7 @@ export class HaBaseTimeInput extends LitElement {
   /**
    * auto validate time inputs
    */
-  @property({ type: Boolean }) autoValidate = false;
+  @property({ attribute: "auto-validate", type: Boolean }) autoValidate = false;
 
   /**
    * determines if inputs are required
@@ -81,52 +81,56 @@ export class HaBaseTimeInput extends LitElement {
   /**
    * Label for the day input
    */
-  @property() dayLabel = "";
+  @property({ attribute: false }) dayLabel = "";
 
   /**
    * Label for the hour input
    */
-  @property() hourLabel = "";
+  @property({ attribute: false }) hourLabel = "";
 
   /**
    * Label for the min input
    */
-  @property() minLabel = "";
+  @property({ attribute: false }) minLabel = "";
 
   /**
    * Label for the sec input
    */
-  @property() secLabel = "";
+  @property({ attribute: false }) secLabel = "";
 
   /**
    * Label for the milli sec input
    */
-  @property() millisecLabel = "";
+  @property({ attribute: false }) millisecLabel = "";
 
   /**
    * show the sec field
    */
-  @property({ type: Boolean }) enableSecond = false;
+  @property({ attribute: "enable-second", type: Boolean })
+  public enableSecond = false;
 
   /**
    * show the milli sec field
    */
-  @property({ type: Boolean }) enableMillisecond = false;
+  @property({ attribute: "enable-millisecond", type: Boolean })
+  public enableMillisecond = false;
 
   /**
    * show the day field
    */
-  @property({ type: Boolean }) enableDay = false;
+  @property({ attribute: "enable-day", type: Boolean })
+  public enableDay = false;
 
   /**
    * limit hours input
    */
-  @property({ type: Boolean }) noHoursLimit = false;
+  @property({ attribute: "no-hours-limit", type: Boolean })
+  public noHoursLimit = false;
 
   /**
    * AM or PM
    */
-  @property() amPm: "AM" | "PM" = "AM";
+  @property({ attribute: false }) amPm: "AM" | "PM" = "AM";
 
   @property({ type: Boolean, reflect: true }) public clearable?: boolean;
 
@@ -134,7 +138,7 @@ export class HaBaseTimeInput extends LitElement {
     return html`
       ${this.label
         ? html`<label>${this.label}${this.required ? " *" : ""}</label>`
-        : ""}
+        : nothing}
       <div class="time-input-wrap-wrap">
         <div class="time-input-wrap">
           ${this.enableDay
@@ -158,7 +162,7 @@ export class HaBaseTimeInput extends LitElement {
                 >
                 </ha-textfield>
               `
-            : ""}
+            : nothing}
 
           <ha-textfield
             id="hour"
@@ -221,7 +225,7 @@ export class HaBaseTimeInput extends LitElement {
                 class=${this.enableMillisecond ? "has-suffix" : ""}
               >
               </ha-textfield>`
-            : ""}
+            : nothing}
           ${this.enableMillisecond
             ? html`<ha-textfield
                 id="millisec"
@@ -240,7 +244,7 @@ export class HaBaseTimeInput extends LitElement {
                 .disabled=${this.disabled}
               >
               </ha-textfield>`
-            : ""}
+            : nothing}
           ${this.clearable && !this.required && !this.disabled
             ? html`<ha-icon-button
                 label="clear"
@@ -251,7 +255,7 @@ export class HaBaseTimeInput extends LitElement {
         </div>
 
         ${this.format === 24
-          ? ""
+          ? nothing
           : html`<ha-select
               .required=${this.required}
               .value=${this.amPm}
@@ -265,10 +269,10 @@ export class HaBaseTimeInput extends LitElement {
               <mwc-list-item value="AM">AM</mwc-list-item>
               <mwc-list-item value="PM">PM</mwc-list-item>
             </ha-select>`}
-        ${this.helper
-          ? html`<ha-input-helper-text>${this.helper}</ha-input-helper-text>`
-          : ""}
       </div>
+      ${this.helper
+        ? html`<ha-input-helper-text>${this.helper}</ha-input-helper-text>`
+        : nothing}
     `;
   }
 
@@ -363,17 +367,17 @@ export class HaBaseTimeInput extends LitElement {
       width: 85px;
     }
     :host([clearable]) .mdc-select__anchor {
-        padding-inline-end: var(--select-selected-text-padding-end, 12px);
+      padding-inline-end: var(--select-selected-text-padding-end, 12px);
     }
     ha-icon-button {
-      position: relative
+      position: relative;
       --mdc-icon-button-size: 36px;
       --mdc-icon-size: 20px;
       color: var(--secondary-text-color);
       direction: var(--direction);
       display: flex;
       align-items: center;
-      background-color:var(--mdc-text-field-fill-color, whitesmoke);
+      background-color: var(--mdc-text-field-fill-color, whitesmoke);
       border-bottom-style: solid;
       border-bottom-width: 1px;
     }
@@ -398,6 +402,10 @@ export class HaBaseTimeInput extends LitElement {
       padding-inline-start: 4px;
       padding-inline-end: initial;
     }
+    ha-input-helper-text {
+      padding-top: 8px;
+      line-height: normal;
+    }
   `;
 }
 

src/components/ha-button-menu.ts

@@ -14,7 +14,7 @@ export class HaButtonMenu extends LitElement {
 
   @property() public corner: Corner = "BOTTOM_START";
 
-  @property() public menuCorner: MenuCorner = "START";
+  @property({ attribute: false }) public menuCorner: MenuCorner = "START";
 
   @property({ type: Number }) public x: number | null = null;
 

src/components/ha-button-toggle-group.ts

@@ -14,7 +14,8 @@ export class HaButtonToggleGroup extends LitElement {
 
   @property() public active?: string;
 
-  @property({ type: Boolean }) public fullWidth = false;
+  @property({ attribute: "full-width", type: Boolean })
+  public fullWidth = false;
 
   @property({ type: Boolean }) public dense = false;
 

src/components/ha-clickable-list-item.ts

@@ -7,9 +7,11 @@ import { HaListItem } from "./ha-list-item";
 export class HaClickableListItem extends HaListItem {
   @property() public href?: string;
 
-  @property({ type: Boolean }) public disableHref = false;
+  @property({ attribute: "disable-href", type: Boolean })
+  public disableHref = false;
 
-  @property({ type: Boolean, reflect: true }) public openNewTab = false;
+  @property({ attribute: "open-new-tab", type: Boolean, reflect: true })
+  public openNewTab = false;
 
   @query("a") private _anchor!: HTMLAnchorElement;
 
@@ -18,7 +20,7 @@ export class HaClickableListItem extends HaListItem {
     const href = this.href || "";
 
     return html`${this.disableHref
-      ? html`<a>${r}</a>`
+      ? html`<a href="#" class="disabled">${r}</a>`
       : html`<a target=${this.openNewTab ? "_blank" : ""} href=${href}
           >${r}</a
         >`}`;
@@ -44,6 +46,9 @@ export class HaClickableListItem extends HaListItem {
           align-items: center;
           overflow: hidden;
         }
+        .disabled {
+          pointer-events: none;
+        }
       `,
     ];
   }

src/components/ha-code-editor.ts

@@ -44,9 +44,10 @@ export class HaCodeEditor extends ReactiveElement {
 
   public hass?: HomeAssistant;
 
+  // eslint-disable-next-line lit/no-native-attributes
   @property({ type: Boolean }) public autofocus = false;
 
-  @property({ type: Boolean }) public readOnly = false;
+  @property({ attribute: "read-only", type: Boolean }) public readOnly = false;
 
   @property({ type: Boolean }) public linewrap = false;
 

src/components/ha-color-picker.ts

@@ -82,7 +82,7 @@ export class HaColorPicker extends LitElement {
                     `
                   : value === "state"
                     ? html`<ha-svg-icon path=${mdiPalette}></ha-svg-icon>`
-                    : this.renderColorCircle(value || "grey")}
+                    : this._renderColorCircle(value || "grey")}
               </span>
             `
           : nothing}
@@ -123,7 +123,7 @@ export class HaColorPicker extends LitElement {
               ${this.defaultColor === color
                 ? ` (${this.hass.localize("ui.components.color-picker.default")})`
                 : nothing}
-              <span slot="graphic">${this.renderColorCircle(color)}</span>
+              <span slot="graphic">${this._renderColorCircle(color)}</span>
             </ha-list-item>
           `
         )}
@@ -131,7 +131,7 @@ export class HaColorPicker extends LitElement {
           ? html`
               <ha-list-item .value=${value} graphic="icon">
                 ${value}
-                <span slot="graphic">${this.renderColorCircle(value)}</span>
+                <span slot="graphic">${this._renderColorCircle(value)}</span>
               </ha-list-item>
             `
           : nothing}
@@ -139,7 +139,7 @@ export class HaColorPicker extends LitElement {
     `;
   }
 
-  private renderColorCircle(color: string) {
+  private _renderColorCircle(color: string) {
     return html`
       <span
         class="circle-color"

src/components/ha-combo-box.ts

@@ -71,7 +71,7 @@ export class HaComboBox extends LitElement {
 
   @property() public placeholder?: string;
 
-  @property() public validationMessage?: string;
+  @property({ attribute: false }) public validationMessage?: string;
 
   @property() public helper?: string;
 

src/components/ha-control-circular-slider.ts

@@ -435,7 +435,7 @@ export class HaControlCircularSlider extends LitElement {
     this._activeSlider = undefined;
   }
 
-  _handleKeyUp(e: KeyboardEvent) {
+  private _handleKeyUp(e: KeyboardEvent) {
     if (!A11Y_KEY_CODES.has(e.code)) return;
     this._activeSlider = (e.currentTarget as any).id as ActiveSlider;
     e.preventDefault();

src/components/ha-control-number-buttons.ts

@@ -52,7 +52,7 @@ export class HaControlNumberButton extends LitElement {
     },
   });
 
-  private boundedValue(value: number) {
+  private _boundedValue(value: number) {
     const clamped = conditionalClamp(value, this.min, this.max);
     return Math.round(clamped / this._step) * this._step;
   }
@@ -86,14 +86,14 @@ export class HaControlNumberButton extends LitElement {
   }
 
   private _increment() {
-    this.value = this.boundedValue(this._value + this._step);
+    this.value = this._boundedValue(this._value + this._step);
   }
 
   private _decrement() {
-    this.value = this.boundedValue(this._value - this._step);
+    this.value = this._boundedValue(this._value - this._step);
   }
 
-  _handleKeyDown(e: KeyboardEvent) {
+  private _handleKeyDown(e: KeyboardEvent) {
     if (this.disabled) return;
     if (!A11Y_KEY_CODES.has(e.code)) return;
     e.preventDefault();
@@ -107,10 +107,10 @@ export class HaControlNumberButton extends LitElement {
         this._decrement();
         break;
       case "PageUp":
-        this.value = this.boundedValue(this._value + this._tenPercentStep);
+        this.value = this._boundedValue(this._value + this._tenPercentStep);
         break;
       case "PageDown":
-        this.value = this.boundedValue(this._value - this._tenPercentStep);
+        this.value = this._boundedValue(this._value - this._tenPercentStep);
         break;
       case "Home":
         if (this.min != null) {

src/components/ha-control-select-menu.ts

@@ -57,12 +57,13 @@ export class HaControlSelectMenu extends SelectBase {
           aria-labelledby=${ifDefined(labelledby)}
           aria-label=${ifDefined(labelAttribute)}
           aria-required=${this.required}
+          aria-controls="listbox"
           @focus=${this.onFocus}
           @blur=${this.onBlur}
           @click=${this.onClick}
           @keydown=${this.onKeydown}
         >
-          ${this.renderIcon()}
+          ${this._renderIcon()}
           <div class="content">
             ${this.hideLabel
               ? nothing
@@ -71,7 +72,7 @@ export class HaControlSelectMenu extends SelectBase {
               ? html`<p class="value">${this.selectedText}</p>`
               : nothing}
           </div>
-          ${this.renderArrow()}
+          ${this._renderArrow()}
           <ha-ripple .disabled=${this.disabled}></ha-ripple>
         </div>
         ${this.renderMenu()}
@@ -79,7 +80,7 @@ export class HaControlSelectMenu extends SelectBase {
     `;
   }
 
-  private renderArrow() {
+  private _renderArrow() {
     if (!this.showArrow) return nothing;
 
     return html`
@@ -89,7 +90,7 @@ export class HaControlSelectMenu extends SelectBase {
     `;
   }
 
-  private renderIcon() {
+  private _renderIcon() {
     const index = this.mdcFoundation?.getSelectedIndex();
     const items = this.menuElement?.items ?? [];
     const item = index != null ? items[index] : undefined;

src/components/ha-control-slider.ts

@@ -215,12 +215,12 @@ export class HaControlSlider extends LitElement {
     return Math.max(this.step, (this.max - this.min) / 10);
   }
 
-  _showTooltip() {
+  private _showTooltip() {
     if (this._tooltipTimeout != null) window.clearTimeout(this._tooltipTimeout);
     this.tooltipVisible = true;
   }
 
-  _hideTooltip(delay?: number) {
+  private _hideTooltip(delay?: number) {
     if (!delay) {
       this.tooltipVisible = false;
       return;
@@ -230,7 +230,7 @@ export class HaControlSlider extends LitElement {
     }, delay);
   }
 
-  _handleKeyDown(e: KeyboardEvent) {
+  private _handleKeyDown(e: KeyboardEvent) {
     if (!A11Y_KEY_CODES.has(e.code)) return;
     e.preventDefault();
     switch (e.code) {
@@ -265,7 +265,7 @@ export class HaControlSlider extends LitElement {
 
   private _tooltipTimeout?: number;
 
-  _handleKeyUp(e: KeyboardEvent) {
+  private _handleKeyUp(e: KeyboardEvent) {
     if (!A11Y_KEY_CODES.has(e.code)) return;
     e.preventDefault();
     this._hideTooltip(500);

src/components/ha-control-switch.ts

@@ -22,10 +22,10 @@ export class HaControlSwitch extends LitElement {
   @property({ type: Boolean, reflect: true }) public checked = false;
 
   // SVG icon path (if you need a non SVG icon instead, use the provided on icon slot to pass an <ha-icon slot="icon-on"> in)
-  @property({ type: String }) pathOn?: string;
+  @property({ attribute: false, type: String }) pathOn?: string;
 
   // SVG icon path (if you need a non SVG icon instead, use the provided off icon slot to pass an <ha-icon slot="icon-off"> in)
-  @property({ type: String }) pathOff?: string;
+  @property({ attribute: false, type: String }) pathOff?: string;
 
   @property({ attribute: "touch-action" })
   public touchAction?: string;

src/components/ha-country-picker.ts

@@ -277,7 +277,7 @@ export class HaCountryPicker extends LitElement {
 
   @property({ type: Boolean, reflect: true }) public disabled = false;
 
-  @property({ type: Boolean }) public noSort = false;
+  @property({ attribute: "no-sort", type: Boolean }) public noSort = false;
 
   private _getOptions = memoizeOne(
     (language?: string, countries?: string[]) => {

src/components/ha-date-input.ts

@@ -13,7 +13,7 @@ import "./ha-textfield";
 
 const loadDatePickerDialog = () => import("./ha-dialog-date-picker");
 
-export interface datePickerDialogParams {
+export interface DatePickerDialogParams {
   value?: string;
   min?: string;
   max?: string;
@@ -25,7 +25,7 @@ export interface datePickerDialogParams {
 
 const showDatePickerDialog = (
   element: HTMLElement,
-  dialogParams: datePickerDialogParams
+  dialogParams: DatePickerDialogParams
 ): void => {
   fireEvent(element, "show-dialog", {
     dialogTag: "ha-dialog-date-picker",
@@ -51,7 +51,7 @@ export class HaDateInput extends LitElement {
 
   @property() public helper?: string;
 
-  @property({ type: Boolean }) public canClear = false;
+  @property({ attribute: "can-clear", type: Boolean }) public canClear = false;
 
   render() {
     return html`<ha-textfield

src/components/ha-date-range-picker.ts

@@ -53,9 +53,11 @@ export class HaDateRangePicker extends LitElement {
 
   @state() private _ranges?: DateRangePickerRanges;
 
-  @property({ type: Boolean }) public autoApply = false;
+  @property({ attribute: "auto-apply", type: Boolean })
+  public autoApply = false;
 
-  @property({ type: Boolean }) public timePicker = true;
+  @property({ attribute: "time-picker", type: Boolean })
+  public timePicker = true;
 
   @property({ type: Boolean }) public disabled = false;
 
@@ -63,9 +65,14 @@ export class HaDateRangePicker extends LitElement {
 
   @state() private _hour24format = false;
 
-  @property({ type: Boolean }) public extendedPresets = false;
+  @property({ attribute: "extended-presets", type: Boolean })
+  public extendedPresets = false;
 
-  @property() public openingDirection?: "right" | "left" | "center" | "inline";
+  @property({ attribute: false }) public openingDirection?:
+    | "right"
+    | "left"
+    | "center"
+    | "inline";
 
   @state() private _calcedOpeningDirection?:
     | "right"

src/components/ha-dialog-date-picker.ts

@@ -7,7 +7,7 @@ import { fireEvent } from "../common/dom/fire_event";
 import { nextRender } from "../common/util/render-status";
 import { haStyleDialog } from "../resources/styles";
 import type { HomeAssistant } from "../types";
-import type { datePickerDialogParams } from "./ha-date-input";
+import type { DatePickerDialogParams } from "./ha-date-input";
 import "./ha-dialog";
 
 @customElement("ha-dialog-date-picker")
@@ -20,11 +20,11 @@ export class HaDialogDatePicker extends LitElement {
 
   @property() public label?: string;
 
-  @state() private _params?: datePickerDialogParams;
+  @state() private _params?: DatePickerDialogParams;
 
   @state() private _value?: string;
 
-  public async showDialog(params: datePickerDialogParams): Promise<void> {
+  public async showDialog(params: DatePickerDialogParams): Promise<void> {
     // app-datepicker has a bug, that it removes its handlers when disconnected, but doesn't add them back when reconnected.
     // So we need to wait for the next render to make sure the element is removed and re-created so the handlers are added.
     await nextRender();