Add hide background option to iframe card

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.browserslistrc

@@ -1,39 +1,36 @@
 [modern]
-# Support for dynamic import is the main litmus test for serving modern builds.
-# Although officially a ES2020 feature, browsers implemented it early, so this
-# enables all of ES2017 and some features in ES2018.
-supports es6-module-dynamic-import
-
-# Exclude Safari 11-12 because of a bug in tagged template literals
-# https://bugs.webkit.org/show_bug.cgi?id=190756
-# Note: Dropping version 11 also enables several more ES2018 features
-not Safari < 13
-not iOS < 13
-
-# Exclude KaiOS, QQ, and UC browsers due to lack of sufficient feature support data
-# Babel ignores these automatically, but we need here for Webpack to output ESM with dynamic imports
+# Modern builds target recent browsers supporting the latest features to minimize transpilation, polyfills, etc.
+# It is served to browsers meeting the following requirements:
+# - released in the last year + current alpha/beta versions
+# - Firefox extended support release (ESR)
+# - with global utilization at or above 0.5%
+# - 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%
+not dead
 not KaiOS > 0
 not QQAndroid > 0
 not UCAndroid > 0
 
-# Exclude unsupported browsers
-not dead
-
 [legacy]
 # 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 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.
+# - with global utilization at or above 0.05%
+# - 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 serviceworkers
+not dead
+not op_mini all

.devcontainer/Dockerfile

@@ -1,5 +1,4 @@
-# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.148.1/containers/python-3/.devcontainer/base.Dockerfile
-FROM mcr.microsoft.com/vscode/devcontainers/python:0-3.11
+FROM mcr.microsoft.com/devcontainers/python:1-3.13
 
 ENV \
   DEBIAN_FRONTEND=noninteractive \

.devcontainer/devcontainer.json

@@ -5,10 +5,15 @@
     "context": ".."
   },
   "appPort": "8124:8123",
+  "postCreateCommand": "./.devcontainer/post_create.sh",
   "postStartCommand": "script/bootstrap",
   "containerEnv": {
+    "DEV_CONTAINER": "1",
     "WORKSPACE_DIRECTORY": "${containerWorkspaceFolder}"
   },
+  "remoteEnv": {
+    "NODE_OPTIONS": "--max_old_space_size=8192"
+  },
   "customizations": {
     "vscode": {
       "extensions": [
@@ -16,7 +21,8 @@
         "esbenp.prettier-vscode",
         "runem.lit-plugin",
         "github.vscode-pull-request-github",
-        "eamodio.gitlens"
+        "eamodio.gitlens",
+        "yeion7.styled-global-variables-autocomplete"
       ],
       "settings": {
         "files.eol": "\n",

.devcontainer/post_create.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# This script will run after the container is created
+
+# add github cli
+(type -p wget >/dev/null || (sudo apt update && sudo apt-get install wget -y)) \
+	&& sudo mkdir -p -m 755 /etc/apt/keyrings \
+        && out=$(mktemp) && wget -nv -O$out https://cli.github.com/packages/githubcli-archive-keyring.gpg \
+        && cat $out | sudo tee /etc/apt/keyrings/githubcli-archive-keyring.gpg > /dev/null \
+	&& sudo chmod go+r /etc/apt/keyrings/githubcli-archive-keyring.gpg \
+	&& echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null
+
+# Update package lists
+sudo apt-get update
+
+sudo apt upgrade -y
+
+# Install necessary packages
+sudo apt-get install -y libpcap-dev gh
+
+# Display a message
+echo "Post-create script has been executed successfully."

.eslintrc.json

@@ -1,130 +0,0 @@
-{
-  "extends": [
-    "airbnb-base",
-    "airbnb-typescript/base",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:wc/recommended",
-    "plugin:lit/all",
-    "plugin:lit-a11y/recommended",
-    "prettier"
-  ],
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "ecmaVersion": 2020,
-    "ecmaFeatures": {
-      "modules": true
-    },
-    "sourceType": "module",
-    "project": "./tsconfig.json"
-  },
-  "settings": {
-    "import/resolver": {
-      "webpack": {
-        "config": "./webpack.config.cjs"
-      }
-    }
-  },
-  "globals": {
-    "__DEV__": false,
-    "__DEMO__": false,
-    "__BUILD__": false,
-    "__VERSION__": false,
-    "__STATIC_PATH__": false,
-    "__SUPERVISOR__": false,
-    "Polymer": true
-  },
-  "env": {
-    "browser": true,
-    "es6": true
-  },
-  "rules": {
-    "class-methods-use-this": "off",
-    "new-cap": "off",
-    "prefer-template": "off",
-    "object-shorthand": "off",
-    "func-names": "off",
-    "no-underscore-dangle": "off",
-    "strict": "off",
-    "no-plusplus": "off",
-    "no-bitwise": "error",
-    "comma-dangle": "off",
-    "vars-on-top": "off",
-    "no-continue": "off",
-    "no-param-reassign": "off",
-    "no-multi-assign": "off",
-    "no-console": "error",
-    "radix": "off",
-    "no-alert": "off",
-    "no-nested-ternary": "off",
-    "prefer-destructuring": "off",
-    "no-restricted-globals": [2, "event"],
-    "prefer-promise-reject-errors": "off",
-    "import/prefer-default-export": "off",
-    "import/no-default-export": "off",
-    "import/no-unresolved": "off",
-    "import/no-cycle": "off",
-    "import/extensions": [
-      "error",
-      "ignorePackages",
-      {
-        "ts": "never",
-        "js": "never"
-      }
-    ],
-    "no-restricted-syntax": ["error", "LabeledStatement", "WithStatement"],
-    "object-curly-newline": "off",
-    "default-case": "off",
-    "wc/no-self-class": "off",
-    "no-shadow": "off",
-    "@typescript-eslint/camelcase": "off",
-    "@typescript-eslint/ban-ts-comment": "off",
-    "@typescript-eslint/no-use-before-define": "off",
-    "@typescript-eslint/no-non-null-assertion": "off",
-    "@typescript-eslint/no-explicit-any": "off",
-    "@typescript-eslint/explicit-function-return-type": "off",
-    "@typescript-eslint/explicit-module-boundary-types": "off",
-    "@typescript-eslint/no-shadow": ["error"],
-    "@typescript-eslint/naming-convention": [
-      "off",
-      {
-        "selector": "default",
-        "format": ["camelCase", "snake_case"],
-        "leadingUnderscore": "allow",
-        "trailingUnderscore": "allow"
-      },
-      {
-        "selector": ["variable"],
-        "format": ["camelCase", "snake_case", "UPPER_CASE"],
-        "leadingUnderscore": "allow",
-        "trailingUnderscore": "allow"
-      },
-      {
-        "selector": "typeLike",
-        "format": ["PascalCase"]
-      }
-    ],
-    "@typescript-eslint/no-unused-vars": "off",
-    "unused-imports/no-unused-vars": [
-      "error",
-      {
-        "vars": "all",
-        "varsIgnorePattern": "^_",
-        "args": "after-used",
-        "argsIgnorePattern": "^_",
-        "ignoreRestSiblings": true
-      }
-    ],
-    "unused-imports/no-unused-imports": "error",
-    "lit/attribute-value-entities": "off",
-    "lit/no-template-map": "off",
-    "lit/no-native-attributes": "warn",
-    "lit/no-this-assign-in-render": "warn",
-    "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"
-  },
-  "plugins": ["disable", "unused-imports"],
-  "processor": "disable/disable"
-}

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -7,11 +7,11 @@ body:
       value: |
         Make sure you are running the [latest version of Home Assistant][releases] before reporting an issue.
 
-        If you have a feature or enhancement request for the frontend, please [start an discussion][fr] instead of creating an issue.
+        If you have a feature or enhancement request for the frontend, please [start a discussion][fr] instead of creating an issue.
 
         **Please do not report issues for custom cards.**
 
-        [fr]: https://github.com/home-assistant/frontend/discussions
+        [fr]: https://github.com/orgs/home-assistant/discussions
         [releases]: https://github.com/home-assistant/home-assistant/releases
   - type: checkboxes
     attributes:
@@ -74,7 +74,7 @@ body:
         If known, otherwise leave blank.
   - type: input
     attributes:
-      label: In which browser are you experiencing the issue with?
+      label: In which browser are you experiencing the issue?
       placeholder: Google Chrome 88.0.4324.150
       description: >
         Provide the full name and don't forget to add the version!
@@ -108,9 +108,9 @@ body:
       render: yaml
   - type: textarea
     attributes:
-      label: Javascript errors shown in your browser console/inspector
+      label: JavaScript errors shown in your browser console/inspector
       description: >
-        If you come across any Javascript or other error logs, e.g., in your
+        If you come across any JavaScript or other error logs, e.g., in your
         browser console/inspector please provide them.
       render: txt
   - type: textarea

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +1,8 @@
 blank_issues_enabled: false
 contact_links:
   - name: Request a feature for the UI / Dashboards
-    url: https://github.com/home-assistant/frontend/discussions/category_choices
-    about: Request an new feature for the Home Assistant frontend.
+    url: https://github.com/orgs/home-assistant/discussions
+    about: Request a new feature for the Home Assistant frontend.
   - name: Report a bug that is NOT related to the UI / Dashboards
     url: https://github.com/home-assistant/core/issues
     about: This is the issue tracker for our frontend. Please report other issues in the backend ("core") repository.

.github/ISSUE_TEMPLATE/task.yml

@@ -0,0 +1,53 @@
+name: Task
+description: For staff only - Create a task
+type: Task
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## ⚠️ RESTRICTED ACCESS
+
+        **This form is restricted to Open Home Foundation staff and authorized contributors only.**
+
+        If you are a community member wanting to contribute, please:
+        - For bug reports: Use the [bug report form](https://github.com/home-assistant/frontend/issues/new?template=bug_report.yml)
+        - For feature requests: Submit to [Feature Requests](https://github.com/orgs/home-assistant/discussions)
+
+        ---
+
+        ### For authorized contributors
+
+        Use this form to create tasks for development work, improvements, or other actionable items that need to be tracked.
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: |
+        Provide a clear and detailed description of the task that needs to be accomplished.
+
+        Be specific about what needs to be done, why it's important, and any constraints or requirements.
+      placeholder: |
+        Describe the task, including:
+        - What needs to be done
+        - Why this task is needed
+        - Expected outcome
+        - Any constraints or requirements
+    validations:
+      required: true
+  - type: textarea
+    id: additional_context
+    attributes:
+      label: Additional context
+      description: |
+        Any additional information, links, research, or context that would be helpful.
+
+        Include links to related issues, research, prototypes, roadmap opportunities etc.
+      placeholder: |
+        - Roadmap opportunity: [link]
+        - Epic: [link]
+        - Feature request: [link]
+        - Technical design documents: [link]
+        - Prototype/mockup: [link]
+        - Dependencies: [links]
+    validations:
+      required: false

.github/copilot-instructions.md

@@ -0,0 +1,596 @@
+# GitHub Copilot & Claude Code Instructions
+
+You are an assistant helping with development of the Home Assistant frontend. The frontend is built using Lit-based Web Components and TypeScript, providing a responsive and performant interface for home automation control.
+
+## Table of Contents
+
+- [Quick Reference](#quick-reference)
+- [Core Architecture](#core-architecture)
+- [Development Standards](#development-standards)
+- [Component Library](#component-library)
+- [Common Patterns](#common-patterns)
+- [Text and Copy Guidelines](#text-and-copy-guidelines)
+- [Development Workflow](#development-workflow)
+- [Review Guidelines](#review-guidelines)
+
+## Quick Reference
+
+### Essential Commands
+
+```bash
+yarn lint          # ESLint + Prettier + TypeScript + Lit
+yarn format        # Auto-fix ESLint + Prettier
+yarn lint:types    # TypeScript compiler
+yarn test          # Vitest
+script/develop     # Development server
+```
+
+### Component Prefixes
+
+- `ha-` - Home Assistant components
+- `hui-` - Lovelace UI components
+- `dialog-` - Dialog components
+
+### Import Patterns
+
+```typescript
+import type { HomeAssistant } from "../types";
+import { fireEvent } from "../common/dom/fire_event";
+import { showAlertDialog } from "../dialogs/generic/show-alert-dialog";
+```
+
+## Core Architecture
+
+The Home Assistant frontend is a modern web application that:
+
+- Uses Web Components (custom elements) built with Lit framework
+- Is written entirely in TypeScript with strict type checking
+- Communicates with the backend via WebSocket API
+- Provides comprehensive theming and internationalization
+
+## Development Standards
+
+### Code Quality Requirements
+
+**Linting and Formatting (Enforced by Tools)**
+
+- ESLint config extends Airbnb, TypeScript strict, Lit, Web Components, Accessibility
+- Prettier with ES5 trailing commas enforced
+- No console statements (`no-console: "error"`) - use proper logging
+- Import organization: No unused imports, consistent type imports
+
+**Naming Conventions**
+
+- PascalCase for types and classes
+- camelCase for variables, methods
+- Private methods require leading underscore
+- Public methods forbid leading underscore
+
+### TypeScript Usage
+
+- **Always use strict TypeScript**: Enable all strict flags, avoid `any` types
+- **Proper type imports**: Use `import type` for type-only imports
+- **Define interfaces**: Create proper interfaces for data structures
+- **Type component properties**: All Lit properties must be properly typed
+- **No unused variables**: Prefix with `_` if intentionally unused
+- **Consistent imports**: Use `@typescript-eslint/consistent-type-imports`
+
+```typescript
+// Good
+import type { HomeAssistant } from "../types";
+
+interface EntityConfig {
+  entity: string;
+  name?: string;
+}
+
+@property({ type: Object })
+hass!: HomeAssistant;
+
+// Bad
+@property()
+hass: any;
+```
+
+### Web Components with Lit
+
+- **Use Lit 3.x patterns**: Follow modern Lit practices
+- **Extend appropriate base classes**: Use `LitElement`, `SubscribeMixin`, or other mixins as needed
+- **Define custom element names**: Use `ha-` prefix for components
+
+```typescript
+@customElement("ha-my-component")
+export class HaMyComponent extends LitElement {
+  @property({ attribute: false })
+  hass!: HomeAssistant;
+
+  @state()
+  private _config?: MyComponentConfig;
+
+  static get styles() {
+    return css`
+      :host {
+        display: block;
+      }
+    `;
+  }
+
+  render() {
+    return html`<div>Content</div>`;
+  }
+}
+```
+
+### Component Guidelines
+
+- **Use composition**: Prefer composition over inheritance
+- **Lazy load panels**: Heavy panels should be dynamically imported
+- **Optimize renders**: Use `@state()` for internal state, `@property()` for public API
+- **Handle loading states**: Always show appropriate loading indicators
+- **Support themes**: Use CSS custom properties from theme
+
+### Data Management
+
+- **Use WebSocket API**: All backend communication via home-assistant-js-websocket
+- **Cache appropriately**: Use collections and caching for frequently accessed data
+- **Handle errors gracefully**: All API calls should have error handling
+- **Update real-time**: Subscribe to state changes for live updates
+
+```typescript
+// Good
+try {
+  const result = await fetchEntityRegistry(this.hass.connection);
+  this._processResult(result);
+} catch (err) {
+  showAlertDialog(this, {
+    text: `Failed to load: ${err.message}`,
+  });
+}
+```
+
+### Styling Guidelines
+
+- **Use CSS custom properties**: Leverage the theme system
+- **Mobile-first responsive**: Design for mobile, enhance for desktop
+- **Follow Material Design**: Use Material Web Components where appropriate
+- **Support RTL**: Ensure all layouts work in RTL languages
+
+```typescript
+static get styles() {
+  return css`
+    :host {
+      --spacing: 16px;
+      padding: var(--spacing);
+      color: var(--primary-text-color);
+      background-color: var(--card-background-color);
+    }
+
+    @media (max-width: 600px) {
+      :host {
+        --spacing: 8px;
+      }
+    }
+  `;
+}
+```
+
+### Performance Best Practices
+
+- **Code split**: Split code at the panel/dialog level
+- **Lazy load**: Use dynamic imports for heavy components
+- **Optimize bundle**: Keep initial bundle size minimal
+- **Use virtual scrolling**: For long lists, implement virtual scrolling
+- **Memoize computations**: Cache expensive calculations
+
+### Testing Requirements
+
+- **Write tests**: Add tests for data processing and utilities
+- **Test with Vitest**: Use the established test framework
+- **Mock appropriately**: Mock WebSocket connections and API calls
+- **Test accessibility**: Ensure components are accessible
+
+## Component Library
+
+### Dialog Components
+
+**Available Dialog Types:**
+
+- `ha-md-dialog` - Preferred for new code (Material Design 3)
+- `ha-dialog` - Legacy component still widely used
+
+**Opening Dialogs (Fire Event Pattern - Recommended):**
+
+```typescript
+fireEvent(this, "show-dialog", {
+  dialogTag: "dialog-example",
+  dialogImport: () => import("./dialog-example"),
+  dialogParams: { title: "Example", data: someData },
+});
+```
+
+**Dialog Implementation Requirements:**
+
+- Implement `HassDialog<T>` interface
+- Use `createCloseHeading()` for standard headers
+- Import `haStyleDialog` for consistent styling
+- Return `nothing` when no params (loading state)
+- Fire `dialog-closed` event when closing
+- Add `dialogInitialFocus` for accessibility
+
+````
+
+### Form Component (ha-form)
+- Schema-driven using `HaFormSchema[]`
+- Supports entity, device, area, target, number, boolean, time, action, text, object, select, icon, media, location selectors
+- Built-in validation with error display
+- Use `dialogInitialFocus` in dialogs
+- Use `computeLabel`, `computeError`, `computeHelper` for translations
+
+```typescript
+<ha-form
+  .hass=${this.hass}
+  .data=${this._data}
+  .schema=${this._schema}
+  .error=${this._errors}
+  .computeLabel=${(schema) => this.hass.localize(`ui.panel.${schema.name}`)}
+  @value-changed=${this._valueChanged}
+></ha-form>
+````
+
+### Alert Component (ha-alert)
+
+- Types: `error`, `warning`, `info`, `success`
+- Properties: `title`, `alert-type`, `dismissable`, `icon`, `action`, `rtl`
+- Content announced by screen readers when dynamically displayed
+
+```html
+<ha-alert alert-type="error">Error message</ha-alert>
+<ha-alert alert-type="warning" title="Warning">Description</ha-alert>
+<ha-alert alert-type="success" dismissable>Success message</ha-alert>
+```
+
+## Common Patterns
+
+### Creating a Panel
+
+```typescript
+@customElement("ha-panel-myfeature")
+export class HaPanelMyFeature extends SubscribeMixin(LitElement) {
+  @property({ attribute: false })
+  hass!: HomeAssistant;
+
+  @property({ type: Boolean, reflect: true })
+  narrow!: boolean;
+
+  @property()
+  route!: Route;
+
+  hassSubscribe() {
+    return [
+      subscribeEntityRegistry(this.hass.connection, (entities) => {
+        this._entities = entities;
+      }),
+    ];
+  }
+}
+```
+
+### Creating a Dialog
+
+```typescript
+@customElement("dialog-my-feature")
+export class DialogMyFeature
+  extends LitElement
+  implements HassDialog<MyDialogParams>
+{
+  @property({ attribute: false })
+  hass!: HomeAssistant;
+
+  @state()
+  private _params?: MyDialogParams;
+
+  public async showDialog(params: MyDialogParams): Promise<void> {
+    this._params = params;
+  }
+
+  public closeDialog(): void {
+    this._params = undefined;
+    fireEvent(this, "dialog-closed", { dialog: this.localName });
+  }
+
+  protected render() {
+    if (!this._params) {
+      return nothing;
+    }
+
+    return html`
+      <ha-dialog
+        open
+        @closed=${this.closeDialog}
+        .heading=${createCloseHeading(this.hass, this._params.title)}
+      >
+        <!-- Dialog content -->
+        <ha-button
+          appearance="plain"
+          @click=${this.closeDialog}
+          slot="secondaryAction"
+        >
+          ${this.hass.localize("ui.common.cancel")}
+        </ha-button>
+        <ha-button @click=${this._submit} slot="primaryAction">
+          ${this.hass.localize("ui.common.save")}
+        </ha-button>
+      </ha-dialog>
+    `;
+  }
+
+  static styles = [haStyleDialog, css``];
+}
+```
+
+### Dialog Design Guidelines
+
+- Max width: 560px (Alert/confirmation: 320px fixed width)
+- Close X-icon on top left (all screen sizes)
+- Submit button grouped with cancel at bottom right
+- Keep button labels short: "Save", "Delete", "Enable"
+- Destructive actions use red warning button
+- Always use a title (best practice)
+- Strive for minimalism
+
+#### Creating a Lovelace Card
+
+**Purpose**: Cards allow users to tell different stories about their house (based on gallery)
+
+```typescript
+@customElement("hui-my-card")
+export class HuiMyCard extends LitElement implements LovelaceCard {
+  @property({ attribute: false })
+  hass!: HomeAssistant;
+
+  @state()
+  private _config?: MyCardConfig;
+
+  public setConfig(config: MyCardConfig): void {
+    if (!config.entity) {
+      throw new Error("Entity required");
+    }
+    this._config = config;
+  }
+
+  public getCardSize(): number {
+    return 3; // Height in grid units
+  }
+
+  // Optional: Editor for card configuration
+  public static getConfigElement(): LovelaceCardEditor {
+    return document.createElement("hui-my-card-editor");
+  }
+
+  // Optional: Stub config for card picker
+  public static getStubConfig(): object {
+    return { entity: "" };
+  }
+}
+```
+
+**Card Guidelines:**
+
+- Cards are highly customizable for different households
+- Implement `LovelaceCard` interface with `setConfig()` and `getCardSize()`
+- Use proper error handling in `setConfig()`
+- Consider all possible states (loading, error, unavailable)
+- Support different entity types and states
+- Follow responsive design principles
+- Add configuration editor when needed
+
+### Internationalization
+
+- **Use localize**: Always use the localization system
+- **Add translation keys**: Add keys to src/translations/en.json
+- **Support placeholders**: Use proper placeholder syntax
+
+```typescript
+this.hass.localize("ui.panel.config.updates.update_available", {
+  count: 5,
+});
+```
+
+### Accessibility
+
+- **ARIA labels**: Add appropriate ARIA labels
+- **Keyboard navigation**: Ensure all interactions work with keyboard
+- **Screen reader support**: Test with screen readers
+- **Color contrast**: Meet WCAG AA standards
+
+## Development Workflow
+
+### Setup and Commands
+
+1. **Setup**: `script/setup` - Install dependencies
+2. **Develop**: `script/develop` - Development server
+3. **Lint**: `yarn lint` - Run all linting before committing
+4. **Test**: `yarn test` - Add and run tests
+5. **Build**: `script/build_frontend` - Test production build
+
+### Common Pitfalls to Avoid
+
+- Don't use `querySelector` - Use refs or component properties
+- Don't manipulate DOM directly - Let Lit handle rendering
+- Don't use global styles - Scope styles to components
+- Don't block the main thread - Use web workers for heavy computation
+- Don't ignore TypeScript errors - Fix all type issues
+
+### Security Best Practices
+
+- Sanitize HTML - Never use `unsafeHTML` with user content
+- Validate inputs - Always validate user inputs
+- Use HTTPS - All external resources must use HTTPS
+- CSP compliance - Ensure code works with Content Security Policy
+
+### Text and Copy Guidelines
+
+#### Terminology Standards
+
+**Delete vs Remove** (Based on gallery/src/pages/Text/remove-delete-add-create.markdown)
+
+- **Use "Remove"** for actions that can be restored or reapplied:
+  - Removing a user's permission
+  - Removing a user from a group
+  - Removing links between items
+  - Removing a widget from dashboard
+  - Removing an item from a cart
+- **Use "Delete"** for permanent, non-recoverable actions:
+  - Deleting a field
+  - Deleting a value in a field
+  - Deleting a task
+  - Deleting a group
+  - Deleting a permission
+  - Deleting a calendar event
+
+**Create vs Add** (Create pairs with Delete, Add pairs with Remove)
+
+- **Use "Add"** for already-existing items:
+  - Adding a permission to a user
+  - Adding a user to a group
+  - Adding links between items
+  - Adding a widget to dashboard
+  - Adding an item to a cart
+- **Use "Create"** for something made from scratch:
+  - Creating a new field
+  - Creating a new task
+  - Creating a new group
+  - Creating a new permission
+  - Creating a new calendar event
+
+#### Writing Style (Consistent with Home Assistant Documentation)
+
+- **Use American English**: Standard spelling and terminology
+- **Friendly, informational tone**: Be inspiring, personal, comforting, engaging
+- **Address users directly**: Use "you" and "your"
+- **Be inclusive**: Objective, non-discriminatory language
+- **Be concise**: Use clear, direct language
+- **Be consistent**: Follow established terminology patterns
+- **Use active voice**: "Delete the automation" not "The automation should be deleted"
+- **Avoid jargon**: Use terms familiar to home automation users
+
+#### Language Standards
+
+- **Always use "Home Assistant"** in full, never "HA" or "HASS"
+- **Avoid abbreviations**: Spell out terms when possible
+- **Use sentence case everywhere**: Titles, headings, buttons, labels, UI elements
+  - ✅ "Create new automation"
+  - ❌ "Create New Automation"
+  - ✅ "Device settings"
+  - ❌ "Device Settings"
+- **Oxford comma**: Use in lists (item 1, item 2, and item 3)
+- **Replace Latin terms**: Use "like" instead of "e.g.", "for example" instead of "i.e."
+- **Avoid CAPS for emphasis**: Use bold or italics instead
+- **Write for all skill levels**: Both technical and non-technical users
+
+#### Key Terminology
+
+- **"add-on"** (hyphenated, not "addon")
+- **"integration"** (preferred over "component")
+- **Technical terms**: Use lowercase (automation, entity, device, service)
+
+#### Translation Considerations
+
+- **Add translation keys**: All user-facing text must be translatable
+- **Use placeholders**: Support dynamic content in translations
+- **Keep context**: Provide enough context for translators
+
+```typescript
+// Good
+this.hass.localize("ui.panel.config.automation.delete_confirm", {
+  name: automation.alias,
+});
+
+// Bad - hardcoded text
+("Are you sure you want to delete this automation?");
+```
+
+### Common Review Issues (From PR Analysis)
+
+#### User Experience and Accessibility
+
+- **Form validation**: Always provide proper field labels and validation feedback
+- **Form accessibility**: Prevent password managers from incorrectly identifying fields
+- **Loading states**: Show clear progress indicators during async operations
+- **Error handling**: Display meaningful error messages when operations fail
+- **Mobile responsiveness**: Ensure components work well on small screens
+- **Hit targets**: Make clickable areas large enough for touch interaction
+- **Visual feedback**: Provide clear indication of interactive states
+
+#### Dialog and Modal Patterns
+
+- **Dialog width constraints**: Respect minimum and maximum width requirements
+- **Interview progress**: Show clear progress for multi-step operations
+- **State persistence**: Handle dialog state properly during background operations
+- **Cancel behavior**: Ensure cancel/close buttons work consistently
+- **Form prefilling**: Use smart defaults but allow user override
+
+#### Component Design Patterns
+
+- **Terminology consistency**: Use "Join"/"Apply" instead of "Group" when appropriate
+- **Visual hierarchy**: Ensure proper font sizes and spacing ratios
+- **Grid alignment**: Components should align to the design grid system
+- **Badge placement**: Position badges and indicators consistently
+- **Color theming**: Respect theme variables and design system colors
+
+#### Code Quality Issues
+
+- **Null checking**: Always check if entities exist before accessing properties
+- **TypeScript safety**: Handle potentially undefined array/object access
+- **Import organization**: Remove unused imports and use proper type imports
+- **Event handling**: Properly subscribe and unsubscribe from events
+- **Memory leaks**: Clean up subscriptions and event listeners
+
+#### Configuration and Props
+
+- **Optional parameters**: Make configuration fields optional when sensible
+- **Smart defaults**: Provide reasonable default values
+- **Future extensibility**: Design APIs that can be extended later
+- **Validation**: Validate configuration before applying changes
+
+## Review Guidelines
+
+### Core Requirements Checklist
+
+- [ ] TypeScript strict mode passes (`yarn lint:types`)
+- [ ] No ESLint errors or warnings (`yarn lint:eslint`)
+- [ ] Prettier formatting applied (`yarn lint:prettier`)
+- [ ] Lit analyzer passes (`yarn lint:lit`)
+- [ ] Component follows Lit best practices
+- [ ] Proper error handling implemented
+- [ ] Loading states handled
+- [ ] Mobile responsive
+- [ ] Theme variables used
+- [ ] Translations added
+- [ ] Accessible to screen readers
+- [ ] Tests added (where applicable)
+- [ ] No console statements (use proper logging)
+- [ ] Unused imports removed
+- [ ] Proper naming conventions
+
+### Text and Copy Checklist
+
+- [ ] Follows terminology guidelines (Delete vs Remove, Create vs Add)
+- [ ] Localization keys added for all user-facing text
+- [ ] Uses "Home Assistant" (never "HA" or "HASS")
+- [ ] Sentence case for ALL text (titles, headings, buttons, labels)
+- [ ] American English spelling
+- [ ] Friendly, informational tone
+- [ ] Avoids abbreviations and jargon
+- [ ] Correct terminology (add-on not addon, integration not component)
+
+### Component-Specific Checks
+
+- [ ] Dialogs implement HassDialog interface
+- [ ] Dialog styling uses haStyleDialog
+- [ ] Dialog accessibility includes dialogInitialFocus
+- [ ] ha-alert used correctly for messages
+- [ ] ha-form uses proper schema structure
+- [ ] Components handle all states (loading, error, unavailable)
+- [ ] Entity existence checked before property access
+- [ ] Event subscriptions properly cleaned up

.github/labeler.yml

@@ -24,14 +24,20 @@ Design:
           - src/fake_data/**
 
 Dependencies:
-  - changed-files:
-      - any-glob-to-any-file:
-          - package.json
-          - renovate.json
-          - yarn.lock
-          - .yarn/**
-          - .yarnrc.yml
-          - .nvmrc
+  - any:
+      - changed-files:
+          # Match when only these files are changed (i.e. don't match PRs that happen to add or remove packages)
+          - any-glob-to-all-files:
+              - package.json
+              - renovate.json
+              - yarn.lock
+              - .yarn/**
+              - .yarnrc.yml
+              - .nvmrc
+      # Dependabot and Renovate branches always match (i.e. compatibility tweaks by members considered minor)
+      - head-branch:
+          - "^renovate/"
+          - "^dependabot/"
 
 GitHub Actions:
   - changed-files:

.github/workflows/cast_deployment.yaml

@@ -21,12 +21,12 @@ jobs:
       url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: dev
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -41,9 +41,8 @@ jobs:
 
       - name: Deploy to Netlify
         id: deploy
-        uses: netlify/actions/cli@master
-        with:
-          args: deploy --dir=cast/dist --alias dev
+        run: |
+          npx -y netlify-cli@23.7.3 deploy --dir=cast/dist --alias dev
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_CAST_SITE_ID }}
@@ -57,12 +56,12 @@ jobs:
       url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: master
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -77,9 +76,8 @@ jobs:
 
       - name: Deploy to Netlify
         id: deploy
-        uses: netlify/actions/cli@master
-        with:
-          args: deploy --dir=cast/dist --prod
+        run: |
+          npx -y netlify-cli@23.7.3 deploy --dir=cast/dist --prod
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_CAST_SITE_ID }}

.github/workflows/ci.yaml

@@ -24,9 +24,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -37,17 +37,20 @@ 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@v3.3.2
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: |
             node_modules/.cache/prettier
             node_modules/.cache/eslint
+            node_modules/.cache/typescript
           key: lint-${{ github.sha }}
           restore-keys: lint-
       - name: Run eslint
         run: yarn run lint:eslint --quiet
       - name: Run tsc
         run: yarn run lint:types
+      - name: Run lit-analyzer
+        run: yarn run lint:lit --quiet
       - name: Run prettier
         run: yarn run lint:prettier
   test:
@@ -55,9 +58,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -73,9 +76,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -86,7 +89,7 @@ jobs:
         env:
           IS_TEST: "true"
       - name: Upload bundle stats
-        uses: actions/upload-artifact@v3.1.3
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
         with:
           name: frontend-bundle-stats
           path: build/stats/*.json
@@ -97,9 +100,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -110,7 +113,7 @@ jobs:
         env:
           IS_TEST: "true"
       - name: Upload bundle stats
-        uses: actions/upload-artifact@v3.1.3
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
         with:
           name: supervisor-bundle-stats
           path: build/stats/*.json

.github/workflows/codeql-analysis.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # We must fetch at least the immediate parents so that if this is
           # a pull request then we can checkout the head.
@@ -36,14 +36,14 @@ jobs:
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@4e94bd11f71e507f7f87df81788dff88d1dacbfb # v4.31.0
         with:
           languages: ${{ matrix.language }}
 
       # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
       # If this step fails, then you should remove it and run the build manually (see below)
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v3
+        uses: github/codeql-action/autobuild@4e94bd11f71e507f7f87df81788dff88d1dacbfb # v4.31.0
 
       # ℹ️ Command-line programs to run using the OS shell.
       # 📚 https://git.io/JvXDl
@@ -57,4 +57,4 @@ jobs:
       #   make release
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@4e94bd11f71e507f7f87df81788dff88d1dacbfb # v4.31.0

.github/workflows/demo_deployment.yaml

@@ -22,12 +22,12 @@ jobs:
       url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: dev
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -42,9 +42,8 @@ jobs:
 
       - name: Deploy to Netlify
         id: deploy
-        uses: netlify/actions/cli@master
-        with:
-          args: deploy --dir=demo/dist --prod
+        run: |
+          npx -y netlify-cli@23.7.3 deploy --dir=demo/dist --prod
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_DEMO_DEV_SITE_ID }}
@@ -58,12 +57,12 @@ jobs:
       url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: master
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -78,9 +77,8 @@ jobs:
 
       - name: Deploy to Netlify
         id: deploy
-        uses: netlify/actions/cli@master
-        with:
-          args: deploy --dir=demo/dist --prod
+        run: |
+          npx -y netlify-cli@23.7.3 deploy --dir=demo/dist --prod
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_DEMO_SITE_ID }}

.github/workflows/design_deployment.yaml

@@ -16,10 +16,10 @@ jobs:
       url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -34,9 +34,8 @@ jobs:
 
       - name: Deploy to Netlify
         id: deploy
-        uses: netlify/actions/cli@master
-        with:
-          args: deploy --dir=gallery/dist --prod
+        run: |
+          npx -y netlify-cli@23.7.3 deploy --dir=gallery/dist --prod
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_GALLERY_SITE_ID }}

.github/workflows/design_preview.yaml

@@ -21,10 +21,10 @@ jobs:
     if: github.repository == 'home-assistant/frontend' && contains(github.event.pull_request.labels.*.name, 'needs design preview')
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -39,13 +39,14 @@ jobs:
 
       - name: Deploy preview to Netlify
         id: deploy
-        uses: netlify/actions/cli@master
-        with:
-          args: deploy --dir=gallery/dist --alias "deploy-preview-${{ github.event.number }}"
+        run: |
+          npx -y netlify-cli@23.7.3 deploy --dir=gallery/dist --alias "deploy-preview-${{ github.event.number }}" \
+            --json > deploy_output.json
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_GALLERY_SITE_ID }}
 
       - name: Generate summary
         run: |
-          echo "${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}" >> "$GITHUB_STEP_SUMMARY"
+          NETLIFY_LIVE_URL=$(jq -r '.deploy_url' deploy_output.json)
+          echo "$NETLIFY_LIVE_URL" >> "$GITHUB_STEP_SUMMARY"

.github/workflows/labeler.yaml

@@ -10,6 +10,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Apply labels
-        uses: actions/labeler@v5.0.0
+        uses: actions/labeler@634933edcd8ababfe52f92936142cc22ac488b1b # v6.0.1
         with:
           sync-labels: true

.github/workflows/lock.yml

@@ -9,7 +9,7 @@ jobs:
   lock:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v5.0.1
+      - uses: dessant/lock-threads@1bf7ec25051fe7c00bdd17e6a7cf3d7bfb7dc771 # v5.0.1
         with:
           github-token: ${{ github.token }}
           process-only: "issues, prs"

.github/workflows/nightly.yaml

@@ -6,7 +6,7 @@ on:
     - cron: "0 1 * * *"
 
 env:
-  PYTHON_VERSION: "3.11"
+  PYTHON_VERSION: "3.13"
   NODE_OPTIONS: --max_old_space_size=6144
 
 permissions:
@@ -20,15 +20,15 @@ jobs:
       contents: write
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Set up Python ${{ env.PYTHON_VERSION }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6
         with:
           python-version: ${{ env.PYTHON_VERSION }}
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -42,7 +42,7 @@ jobs:
           LOKALISE_TOKEN: ${{ secrets.LOKALISE_TOKEN }}
 
       - name: Bump version
-        run: script/version_bump.cjs nightly
+        run: script/version_bump.js nightly
 
       - name: Build nightly Python wheels
         run: |
@@ -57,14 +57,14 @@ jobs:
         run: tar -czvf translations.tar.gz translations
 
       - name: Upload build artifacts
-        uses: actions/upload-artifact@v3.1.3
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
         with:
           name: wheels
           path: dist/home_assistant_frontend*.whl
           if-no-files-found: error
 
       - name: Upload translations
-        uses: actions/upload-artifact@v3.1.3
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
         with:
           name: translations
           path: translations.tar.gz

.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@v2.1.10
+        uses: relative-ci/agent-action@8504826a02078b05756e4c07e380023cc2c4274a # v3.1.0
         with:
           key: ${{ secrets[format('RELATIVE_CI_KEY_{0}_{1}', matrix.bundle, matrix.build)] }}
           token: ${{ github.token }}

.github/workflows/release-drafter.yaml

@@ -18,6 +18,6 @@ jobs:
       pull-requests: read
     runs-on: ubuntu-latest
     steps:
-      - uses: release-drafter/release-drafter@v5
+      - uses: release-drafter/release-drafter@b1476f6e6eb133afa41ed8589daba6dc69b4d3f5 # v6.1.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release.yaml

@@ -6,7 +6,7 @@ on:
       - published
 
 env:
-  PYTHON_VERSION: "3.11"
+  PYTHON_VERSION: "3.13"
   NODE_OPTIONS: --max_old_space_size=6144
 
 # Set default workflow permissions
@@ -23,18 +23,18 @@ jobs:
       contents: write # Required to upload release assets
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Set up Python ${{ env.PYTHON_VERSION }}
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
 
       - name: Verify version
         uses: home-assistant/actions/helpers/verify-version@master
 
-      - name: Set up Python ${{ env.PYTHON_VERSION }}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-
       - name: Setup Node
-        uses: actions/setup-node@v4.0.1
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version-file: ".nvmrc"
           cache: yarn
@@ -55,7 +55,7 @@ jobs:
           script/release
 
       - name: Upload release assets
-        uses: softprops/action-gh-release@v0.1.15
+        uses: softprops/action-gh-release@6da8fa9354ddfdc4aeace5fc48d7f679b5214090 # v2.4.1
         with:
           files: |
             dist/*.whl
@@ -73,11 +73,70 @@ jobs:
           version=$(echo "${{ github.ref }}" | awk -F"/" '{print $NF}' )
           echo "home-assistant-frontend==$version" > ./requirements.txt
 
+      # home-assistant/wheels doesn't support SHA pinning
       - name: Build wheels
-        uses: home-assistant/wheels@2023.10.5
+        uses: home-assistant/wheels@2025.10.0
         with:
-          abi: cp311
+          abi: cp313
           tag: musllinux_1_2
           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@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - name: Setup Node
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+        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@6da8fa9354ddfdc4aeace5fc48d7f679b5214090 # v2.4.1
+        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@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - name: Setup Node
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+        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@6da8fa9354ddfdc4aeace5fc48d7f679b5214090 # v2.4.1
+        with:
+          files: hassio/home_assistant_frontend_supervisor-${{ github.event.release.tag_name }}.tar.gz

.github/workflows/restrict-task-creation.yml

@@ -0,0 +1,58 @@
+name: Restrict task creation
+
+# yamllint disable-line rule:truthy
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  check-authorization:
+    runs-on: ubuntu-latest
+    # Only run if this is a Task issue type (from the issue form)
+    if: github.event.issue.type.name == 'Task'
+    steps:
+      - name: Check if user is authorized
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
+        with:
+          script: |
+            const issueAuthor = context.payload.issue.user.login;
+
+            // Check if user is an organization member
+            try {
+              await github.rest.orgs.checkMembershipForUser({
+                org: 'home-assistant',
+                username: issueAuthor
+              });
+              console.log(`✅ ${issueAuthor} is an organization member`);
+              return; // Authorized
+            } catch (error) {
+              console.log(`❌ ${issueAuthor} is not authorized to create Task issues`);
+            }
+
+            // Close the issue with a comment
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `Hi @${issueAuthor}, thank you for your contribution!\n\n` +
+                    `Task issues are restricted to Open Home Foundation staff and authorized contributors.\n\n` +
+                    `If you would like to:\n` +
+                    `- Report a bug: Please use the [bug report form](https://github.com/home-assistant/frontend/issues/new?template=bug_report.yml)\n` +
+                    `- Request a feature: Please submit to [Feature Requests](https://github.com/orgs/home-assistant/discussions)\n\n` +
+                    `If you believe you should have access to create Task issues, please contact the maintainers.`
+            });
+
+            await github.rest.issues.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              state: 'closed'
+            });
+
+            // Add a label to indicate this was auto-closed
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              labels: ['auto-closed']
+            });

.github/workflows/stale.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 90 days stale policy
-        uses: actions/stale@v9.0.0
+        uses: actions/stale@5f858e3efba33a5ca4407a664cc011ad407f2008 # v10.1.0
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           days-before-stale: 90

.github/workflows/translations.yaml

@@ -1,6 +1,7 @@
 name: Translations
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - dev
@@ -13,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Upload Translations
         run: |

.gitignore

@@ -50,3 +50,10 @@ src/cast/dev_const.ts
 
 # Jetbrains
 /.idea/
+
+# test coverage
+test/coverage/
+
+# AI tooling
+.claude
+

.husky/pre-commit

@@ -1,4 +1 @@
-#!/usr/bin/env sh
-. "$(dirname -- "$0")/_/husky.sh"
-
-yarn run lint-staged --relative --shell "/bin/bash"
+yarn run lint-staged --relative

.nvmrc

@@ -1 +1 @@
-lts/iron
+22.21.1

.vscode/extensions.json

@@ -4,6 +4,8 @@
     "esbenp.prettier-vscode",
     "runem.lit-plugin",
     "github.vscode-pull-request-github",
-    "eamodio.gitlens"
+    "eamodio.gitlens",
+    "vitest.explorer",
+    "yeion7.styled-global-variables-autocomplete"
   ]
 }

.vscode/tasks.json

@@ -1,6 +1,42 @@
 {
   "version": "2.0.0",
   "tasks": [
+    {
+      "label": "Develop and serve Frontend",
+      "type": "shell",
+      "command": "script/develop_and_serve -c ${input:coreUrl}",
+      // Sync changes here to other tasks until issue resolved
+      // https://github.com/Microsoft/vscode/issues/61497
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
     {
       "label": "Develop Frontend",
       "type": "gulp",
@@ -100,6 +136,38 @@
         "instanceLimit": 1
       }
     },
+    {
+      "label": "Develop Landing Page",
+      "type": "gulp",
+      "task": "develop-landing-page",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
     {
       "label": "Develop Demo",
       "type": "gulp",
@@ -209,6 +277,12 @@
       "id": "supervisorToken",
       "type": "promptString",
       "description": "The token for the Remote API proxy add-on"
+    },
+    {
+      "id": "coreUrl",
+      "type": "promptString",
+      "description": "The URL of the Home Assistant Core instance",
+      "default": "http://127.0.0.1:8123"
     }
   ]
 }

.yarn/patches/@material-mwc-formfield-npm-0.27.0-9528cb60f6.patch

@@ -0,0 +1,22 @@
+diff --git a/mwc-formfield-base.js b/mwc-formfield-base.js
+index 7b763326d7d51835ad52646bfbc80fe21989abd3..f2baa8224e6d03df1fdb0b9fd03f5c6d77fc8747 100644
+--- a/mwc-formfield-base.js
++++ b/mwc-formfield-base.js
+@@ -9,7 +9,7 @@ import { BaseElement } from '@material/mwc-base/base-element.js';
+ import { FormElement } from '@material/mwc-base/form-element.js';
+ import { observer } from '@material/mwc-base/observer.js';
+ import { html } from 'lit';
+-import { property, query, queryAssignedNodes } from 'lit/decorators.js';
++import { property, query, queryAssignedElements } from 'lit/decorators.js';
+ import { classMap } from 'lit/directives/class-map.js';
+ export class FormfieldBase extends BaseElement {
+     constructor() {
+@@ -96,7 +96,7 @@ __decorate([
+     query('.mdc-form-field')
+ ], FormfieldBase.prototype, "mdcRoot", void 0);
+ __decorate([
+-    queryAssignedNodes('', true, '*')
++    queryAssignedElements({ slot: "", flatten: true, selector: "*" })
+ ], FormfieldBase.prototype, "slottedInputs", void 0);
+ __decorate([
+     query('label')

.yarn/patches/@material-mwc-list-npm-0.27.0-5344fc9de4.patch

@@ -0,0 +1,26 @@
+diff --git a/mwc-list-base.js b/mwc-list-base.js
+index 1ba95b6a01dcecea4d85b5cbbbcc3dfb04c40d5f..dced13fdb7929c490d6661b1bbe7e9f96dcd2285 100644
+--- a/mwc-list-base.js
++++ b/mwc-list-base.js
+@@ -11,7 +11,7 @@ import { BaseElement } from '@material/mwc-base/base-element.js';
+ import { observer } from '@material/mwc-base/observer.js';
+ import { deepActiveElementPath, doesElementContainFocus, isNodeElement } from '@material/mwc-base/utils.js';
+ import { html } from 'lit';
+-import { property, query, queryAssignedNodes } from 'lit/decorators.js';
++import { property, query, queryAssignedElements } from 'lit/decorators.js';
+ import { ifDefined } from 'lit/directives/if-defined.js';
+ import MDCListFoundation, { isIndexSet } from './mwc-list-foundation.js';
+ export { createSetFromIndex, isEventMulti, isIndexSet } from './mwc-list-foundation.js';
+@@ -425,10 +425,10 @@ __decorate([
+     query('.mdc-deprecated-list')
+ ], ListBase.prototype, "mdcRoot", void 0);
+ __decorate([
+-    queryAssignedNodes('', true, '*')
++    queryAssignedElements({ flatten: true, selector: "*" })
+ ], ListBase.prototype, "assignedElements", void 0);
+ __decorate([
+-    queryAssignedNodes('', true, '[tabindex="0"]')
++    queryAssignedElements({ flatten: true, selector: '[tabindex="0"]' })
+ ], ListBase.prototype, "tabbableElements", void 0);
+ __decorate([
+     property({ type: Boolean }),

.yarn/patches/@polymer/polymer/pr-5569.patch

@@ -1,34 +0,0 @@
-diff --git a/lib/legacy/class.js b/lib/legacy/class.js
-index aee2511be1cd9bf900ee552bc98190c1631c57c0..f2f499d68bf52034cac9c28307c99e8ce6b8417d 100644
---- a/lib/legacy/class.js
-+++ b/lib/legacy/class.js
-@@ -304,17 +304,23 @@ function GenerateClassFromInfo(info, Base, behaviors) {
-       // only proceed if the generated class' prototype has not been registered.
-       const generatedProto = PolymerGenerated.prototype;
-       if (!generatedProto.hasOwnProperty(JSCompiler_renameProperty('__hasRegisterFinished', generatedProto))) {
--        generatedProto.__hasRegisterFinished = true;
-+        // make sure legacy lifecycle is called on the *element*'s prototype
-+        // and not the generated class prototype; if the element has been
-+        // extended, these are *not* the same.
-+        const proto = Object.getPrototypeOf(this);
-+        // Only set flag when generated prototype itself is registered,
-+        // as this element may be extended from, and needs to run `registered`
-+        // on all behaviors on the subclass as well.
-+        if (proto === generatedProto) {
-+          generatedProto.__hasRegisterFinished = true;
-+        }
-         // ensure superclass is registered first.
-         super._registered();
-         // copy properties onto the generated class lazily if we're optimizing,
--        if (legacyOptimizations) {
-+        if (legacyOptimizations && !Object.hasOwnProperty(generatedProto, '__hasCopiedProperties')) {
-+          generatedProto.__hasCopiedProperties = true;
-           copyPropertiesToProto(generatedProto);
-         }
--        // make sure legacy lifecycle is called on the *element*'s prototype
--        // and not the generated class prototype; if the element has been
--        // extended, these are *not* the same.
--        const proto = Object.getPrototypeOf(this);
-         let list = lifecycle.beforeRegister;
-         if (list) {
-           for (let i=0; i < list.length; i++) {

.yarn/patches/sortablejs-npm-1.15.0-f3a393abcc.patch

@@ -1,39 +0,0 @@
-diff --git a/modular/sortable.complete.esm.js b/modular/sortable.complete.esm.js
-index 02e9f2d6bebeb430fe6e7c1cc3f9c3c9df051f14..bb8268b0844a1faa4108cc92c0be2a3dbaf23f83 100644
---- a/modular/sortable.complete.esm.js
-+++ b/modular/sortable.complete.esm.js
-@@ -1657,7 +1657,7 @@ Sortable.prototype =
-           target = parent; // store last element
-         }
-         /* jshint boss:true */
--        while (parent = parent.parentNode);
-+        while (parent = parent.parentNode || parent.getRootNode().host);
-       }
- 
-       _unhideGhostForTarget();
-diff --git a/modular/sortable.core.esm.js b/modular/sortable.core.esm.js
-index b04c8b4634f7c6b4ef1aadbb48afe6564306dea9..39a107163c8c336ebd669b5ea8a936af87e1c1e7 100644
---- a/modular/sortable.core.esm.js
-+++ b/modular/sortable.core.esm.js
-@@ -1657,7 +1657,7 @@ Sortable.prototype =
-           target = parent; // store last element
-         }
-         /* jshint boss:true */
--        while (parent = parent.parentNode);
-+        while (parent = parent.parentNode || parent.getRootNode().host);
-       }
- 
-       _unhideGhostForTarget();
-diff --git a/modular/sortable.esm.js b/modular/sortable.esm.js
-index 6ec7ed1bb557e21c2578200161e989c65d23150b..0a05475a22904472fac6c13f524c674da76584b0 100644
---- a/modular/sortable.esm.js
-+++ b/modular/sortable.esm.js
-@@ -1657,7 +1657,7 @@ Sortable.prototype =
-           target = parent; // store last element
-         }
-         /* jshint boss:true */
--        while (parent = parent.parentNode);
-+        while (parent = parent.parentNode || parent.getRootNode().host);
-       }
- 
-       _unhideGhostForTarget();

.yarn/patches/sortablejs-npm-1.15.6-3235a8f83b.patch

@@ -0,0 +1,60 @@
+diff --git a/modular/sortable.core.esm.js b/modular/sortable.core.esm.js
+index 8b5e49b011713c8859c669069fbe85ce53974e1d..6a0afc92787157b8a31c38cc5f67dfa526090a00 100644
+--- a/modular/sortable.core.esm.js
++++ b/modular/sortable.core.esm.js
+@@ -1781,11 +1781,16 @@ Sortable.prototype = /** @lends Sortable.prototype */{
+         }
+         if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, !!target) !== false) {
+           capture();
+-          if (elLastChild && elLastChild.nextSibling) {
+-            // the last draggable element is not the last node
+-            el.insertBefore(dragEl, elLastChild.nextSibling);
+-          } else {
+-            el.appendChild(dragEl);
++          try {
++            if (elLastChild && elLastChild.nextSibling) {
++              // the last draggable element is not the last node
++              el.insertBefore(dragEl, elLastChild.nextSibling);
++            } else {
++              el.appendChild(dragEl);
++            }
++          }
++          catch(err) {
++            return completed(false);
+           }
+           parentEl = el; // actualization
+ 
+@@ -1802,7 +1807,12 @@ Sortable.prototype = /** @lends Sortable.prototype */{
+         targetRect = getRect(target);
+         if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, false) !== false) {
+           capture();
+-          el.insertBefore(dragEl, firstChild);
++          try {
++            el.insertBefore(dragEl, firstChild);
++          }
++          catch(err) {
++            return completed(false);
++          }
+           parentEl = el; // actualization
+ 
+           changed();
+@@ -1849,10 +1859,15 @@ Sortable.prototype = /** @lends Sortable.prototype */{
+           _silent = true;
+           setTimeout(_unsilent, 30);
+           capture();
+-          if (after && !nextSibling) {
+-            el.appendChild(dragEl);
+-          } else {
+-            target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
++          try {
++            if (after && !nextSibling) {
++              el.appendChild(dragEl);
++            } else {
++              target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
++            }
++          }
++          catch(err) {
++            return completed(false);
+           }
+ 
+           // Undo chrome's scroll adjustment (has no effect on other browsers)

.yarn/patches/workbox-build-npm-7.1.1-a854f3faae.patch

@@ -0,0 +1,55 @@
+diff --git a/build/inject-manifest.js b/build/inject-manifest.js
+index 60e3d2bb51c11a19fbbedbad65e101082ec41c36..fed6026630f43f86e25446383982cf6fb694313b 100644
+--- a/build/inject-manifest.js
++++ b/build/inject-manifest.js
+@@ -104,7 +104,7 @@ async function injectManifest(config) {
+             replaceString: manifestString,
+             searchString: options.injectionPoint,
+         });
+-        filesToWrite[options.swDest] = source;
++        filesToWrite[options.swDest] = source.replace(url, encodeURI(upath_1.default.basename(destPath)));
+         filesToWrite[destPath] = map;
+     }
+     else {
+diff --git a/build/lib/translate-url-to-sourcemap-paths.js b/build/lib/translate-url-to-sourcemap-paths.js
+index 3220c5474eeac6e8a56ca9b2ac2bd9be48529e43..5f003879a904d4840529a42dd056d288fd213771 100644
+--- a/build/lib/translate-url-to-sourcemap-paths.js
++++ b/build/lib/translate-url-to-sourcemap-paths.js
+@@ -22,7 +22,7 @@ function translateURLToSourcemapPaths(url, swSrc, swDest) {
+         const possibleSrcPath = upath_1.default.resolve(upath_1.default.dirname(swSrc), url);
+         if (fs_extra_1.default.existsSync(possibleSrcPath)) {
+             srcPath = possibleSrcPath;
+-            destPath = upath_1.default.resolve(upath_1.default.dirname(swDest), url);
++            destPath = `${swDest}.map`;
+         }
+         else {
+             warning = `${errors_1.errors['cant-find-sourcemap']} ${possibleSrcPath}`;
+diff --git a/src/inject-manifest.ts b/src/inject-manifest.ts
+index 8795ddcaa77aea7b0356417e4bc4b19e2b3f860c..fcdc68342d9ac53936c9ed40a9ccfc2f5070cad3 100644
+--- a/src/inject-manifest.ts
++++ b/src/inject-manifest.ts
+@@ -129,7 +129,10 @@ export async function injectManifest(
+       searchString: options.injectionPoint!,
+     });
+ 
+-    filesToWrite[options.swDest] = source;
++    filesToWrite[options.swDest] = source.replace(
++      url!,
++      encodeURI(upath.basename(destPath)),
++    );
+     filesToWrite[destPath] = map;
+   } else {
+     // If there's no sourcemap associated with swSrc, a simple string
+diff --git a/src/lib/translate-url-to-sourcemap-paths.ts b/src/lib/translate-url-to-sourcemap-paths.ts
+index 072eac40d4ef5d095a01cb7f7e392a9e034853bd..f0bbe69e88ef3a415de18a7e9cb264daea273d71 100644
+--- a/src/lib/translate-url-to-sourcemap-paths.ts
++++ b/src/lib/translate-url-to-sourcemap-paths.ts
+@@ -28,7 +28,7 @@ export function translateURLToSourcemapPaths(
+     const possibleSrcPath = upath.resolve(upath.dirname(swSrc), url);
+     if (fse.existsSync(possibleSrcPath)) {
+       srcPath = possibleSrcPath;
+-      destPath = upath.resolve(upath.dirname(swDest), url);
++      destPath = `${swDest}.map`;
+     } else {
+       warning = `${errors['cant-find-sourcemap']} ${possibleSrcPath}`;
+     }

.yarnrc.yml

@@ -6,4 +6,4 @@ enableGlobalCache: false
 
 nodeLinker: node-modules
 
-yarnPath: .yarn/releases/yarn-4.0.2.cjs
+yarnPath: .yarn/releases/yarn-4.10.3.cjs

CLAUDE.md

@@ -0,0 +1 @@
+.github/copilot-instructions.md

CODEOWNERS

@@ -0,0 +1,8 @@
+# People marked here will be automatically requested for a review
+# when the code that they own is touched.
+# https://github.com/blog/2392-introducing-code-owners
+# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
+
+# Part of the frontend that mobile developper should review
+src/external_app/ @bgoncal @TimoPtr
+test/external_app/ @bgoncal @TimoPtr

README.md

@@ -27,3 +27,5 @@ A complete guide can be found at the following [link](https://www.home-assistant
 Home Assistant is open-source and Apache 2 licensed. Feel free to browse the repository, learn and reuse parts in your own projects.
 
 We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variety of devices.
+
+[![Home Assistant - A project from the Open Home Foundation](https://www.openhomefoundation.org/badges/home-assistant.png)](https://www.openhomefoundation.org/)

build-scripts/.eslintrc.json

@@ -1,12 +0,0 @@
-{
-  "extends": "../.eslintrc.json",
-  "rules": {
-    "no-console": "off",
-    "import/no-extraneous-dependencies": "off",
-    "import/extensions": "off",
-    "import/no-dynamic-require": "off",
-    "global-require": "off",
-    "@typescript-eslint/no-var-requires": "off",
-    "prefer-arrow-callback": "off"
-  }
-}

build-scripts/README.md

@@ -15,7 +15,7 @@ The Home Assistant build pipeline contains various steps to prepare a build.
 
 Currently in Home Assistant we use a bundler to convert TypeScript, CSS and JSON files to JavaScript files that the browser understands.
 
-We currently rely on Webpack but also have experimental Rollup support. Both of these programs bundle the converted files in both production and development.
+We currently rely on Webpack. Both of these programs bundle the converted files in both production and development.
 
 For development, bundling is optional. We just want to get the right files in the browser.
 

build-scripts/babel-plugins/custom-polyfill-plugin.js

@@ -1,28 +1,82 @@
 import defineProvider from "@babel/helper-define-polyfill-provider";
+import { join } from "node:path";
+import paths from "../paths.cjs";
+
+const POLYFILL_DIR = join(paths.root_dir, "src/resources/polyfills");
 
 // List of polyfill keys with supported browser targets for the functionality
-const PolyfillSupport = {
-  fetch: {
-    android: 42,
-    chrome: 42,
-    edge: 14,
-    firefox: 39,
-    ios: 10.3,
-    opera: 29,
-    opera_mobile: 29,
-    safari: 10.1,
-    samsung: 4.0,
+const polyfillSupport = {
+  // Note states and shadowRoot properties should be supported.
+  "element-internals": {
+    android: 90,
+    chrome: 90,
+    edge: 90,
+    firefox: 126,
+    ios: 17.4,
+    opera: 76,
+    opera_mobile: 64,
+    safari: 17.4,
+    samsung: 15.0,
   },
-  proxy: {
-    android: 49,
-    chrome: 49,
-    edge: 12,
-    firefox: 18,
-    ios: 10.0,
-    opera: 36,
-    opera_mobile: 36,
-    safari: 10.0,
-    samsung: 5.0,
+  "element-getattributenames": {
+    android: 61,
+    chrome: 61,
+    edge: 18,
+    firefox: 45,
+    ios: 10.3,
+    opera: 48,
+    opera_mobile: 45,
+    safari: 10.1,
+    samsung: 8.0,
+  },
+  "element-toggleattribute": {
+    android: 69,
+    chrome: 69,
+    edge: 18,
+    firefox: 63,
+    ios: 12.0,
+    opera: 56,
+    opera_mobile: 48,
+    safari: 12.0,
+    samsung: 10.0,
+  },
+  // FormatJS polyfill detects fix for https://bugs.chromium.org/p/v8/issues/detail?id=10682,
+  // so adjusted to several months after that was marked fixed
+  "intl-getcanonicallocales": {
+    android: 90,
+    chrome: 90,
+    edge: 90,
+    firefox: 48,
+    ios: 10.3,
+    opera: 76,
+    opera_mobile: 64,
+    safari: 10.1,
+    samsung: 15.0,
+  },
+  "intl-locale": {
+    android: 74,
+    chrome: 74,
+    edge: 79,
+    firefox: 75,
+    ios: 14.0,
+    opera: 62,
+    opera_mobile: 53,
+    safari: 14.0,
+    samsung: 11.0,
+  },
+  "intl-other": {
+    // Not specified (i.e. always try polyfill) since compatibility depends on supported locales
+  },
+  "resize-observer": {
+    android: 64,
+    chrome: 64,
+    edge: 79,
+    firefox: 69,
+    ios: 13.4,
+    opera: 51,
+    opera_mobile: 47,
+    safari: 13.1,
+    samsung: 9.0,
   },
 };
 
@@ -30,11 +84,49 @@ const PolyfillSupport = {
 // corresponding polyfill key and actual module to import
 const polyfillMap = {
   global: {
-    Proxy: { key: "proxy", module: "proxy-polyfill" },
-    fetch: { key: "fetch", module: "unfetch/polyfill" },
+    ResizeObserver: {
+      key: "resize-observer",
+      module: join(POLYFILL_DIR, "resize-observer.ts"),
+    },
+  },
+  instance: {
+    attachInternals: {
+      key: "element-internals",
+      module: "element-internals-polyfill",
+    },
+    ...Object.fromEntries(
+      ["getAttributeNames", "toggleAttribute"].map((prop) => {
+        const key = `element-${prop.toLowerCase()}`;
+        return [prop, { key, module: join(POLYFILL_DIR, `${key}.ts`) }];
+      })
+    ),
+  },
+  static: {
+    Intl: {
+      getCanonicalLocales: {
+        key: "intl-getcanonicallocales",
+        module: join(POLYFILL_DIR, "intl-polyfill.ts"),
+      },
+      Locale: {
+        key: "intl-locale",
+        module: join(POLYFILL_DIR, "intl-polyfill.ts"),
+      },
+      ...Object.fromEntries(
+        [
+          "DateTimeFormat",
+          "DurationFormat",
+          "DisplayNames",
+          "ListFormat",
+          "NumberFormat",
+          "PluralRules",
+          "RelativeTimeFormat",
+        ].map((obj) => [
+          obj,
+          { key: "intl-other", module: join(POLYFILL_DIR, "intl-polyfill.ts") },
+        ])
+      ),
+    },
   },
-  instance: {},
-  static: {},
 };
 
 // Create plugin using the same factory as for CoreJS
@@ -42,14 +134,16 @@ export default defineProvider(
   ({ createMetaResolver, debug, shouldInjectPolyfill }) => {
     const resolvePolyfill = createMetaResolver(polyfillMap);
     return {
-      name: "HA Custom",
-      polyfills: PolyfillSupport,
+      name: "custom-polyfill",
+      polyfills: polyfillSupport,
       usageGlobal(meta, utils) {
         const polyfill = resolvePolyfill(meta);
         if (polyfill && shouldInjectPolyfill(polyfill.desc.key)) {
           debug(polyfill.desc.key);
           utils.injectGlobalImport(polyfill.desc.module);
+          return true;
         }
+        return false;
       },
     };
   }

build-scripts/bundle.cjs

@@ -3,6 +3,8 @@ const env = require("./env.cjs");
 const paths = require("./paths.cjs");
 const { dependencies } = require("../package.json");
 
+const BABEL_PLUGINS = path.join(__dirname, "babel-plugins");
+
 // GitHub base URL to use for production source maps
 // Nightly builds use the commit SHA, otherwise assumes there is a tag that matches the version
 module.exports.sourceMapURL = () => {
@@ -16,41 +18,35 @@ module.exports.sourceMapURL = () => {
 module.exports.ignorePackages = () => [];
 
 // Files from NPM packages that we should replace with empty file
-module.exports.emptyPackages = ({ latestBuild, isHassioBuild }) =>
+module.exports.emptyPackages = ({ isHassioBuild }) =>
   [
-    // Contains all color definitions for all material color sets.
-    // We don't use it
-    require.resolve("@polymer/paper-styles/color.js"),
-    require.resolve("@polymer/paper-styles/default-theme.js"),
-    // Loads stuff from a CDN
-    require.resolve("@polymer/font-roboto/roboto.js"),
     require.resolve("@vaadin/vaadin-material-styles/typography.js"),
     require.resolve("@vaadin/vaadin-material-styles/font-icons.js"),
-    // Compatibility not needed for latest builds
-    latestBuild &&
-      // wrapped in require.resolve so it blows up if file no longer exists
-      require.resolve(
-        path.resolve(paths.polymer_dir, "src/resources/compatibility.ts")
-      ),
     // Icons in supervisor conflict with icons in HA so we don't load.
     isHassioBuild &&
       require.resolve(
-        path.resolve(paths.polymer_dir, "src/components/ha-icon.ts")
+        path.resolve(paths.root_dir, "src/components/ha-icon.ts")
       ),
     isHassioBuild &&
       require.resolve(
-        path.resolve(paths.polymer_dir, "src/components/ha-icon-picker.ts")
+        path.resolve(paths.root_dir, "src/components/ha-icon-picker.ts")
       ),
   ].filter(Boolean);
 
 module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
   __DEV__: !isProdBuild,
-  __BUILD__: JSON.stringify(latestBuild ? "latest" : "es5"),
+  __BUILD__: JSON.stringify(latestBuild ? "modern" : "legacy"),
   __VERSION__: JSON.stringify(env.version()),
   __DEMO__: false,
   __SUPERVISOR__: false,
   __BACKWARDS_COMPAT__: false,
   __STATIC_PATH__: "/static/",
+  __HASS_URL__: `\`${
+    "HASS_URL" in process.env
+      ? process.env.HASS_URL
+      : // eslint-disable-next-line no-template-curly-in-string
+        "${location.protocol}//${location.host}"
+  }\``,
   "process.env.NODE_ENV": JSON.stringify(
     isProdBuild ? "production" : "development"
   ),
@@ -77,7 +73,25 @@ module.exports.terserOptions = ({ latestBuild, isTestBuild }) => ({
   sourceMap: !isTestBuild,
 });
 
-module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
+/** @type {import('@rspack/core').SwcLoaderOptions} */
+module.exports.swcOptions = () => ({
+  jsc: {
+    loose: true,
+    externalHelpers: true,
+    target: "ES2021",
+    parser: {
+      syntax: "typescript",
+      decorators: true,
+    },
+  },
+});
+
+module.exports.babelOptions = ({
+  latestBuild,
+  isProdBuild,
+  isTestBuild,
+  sw,
+}) => ({
   babelrc: false,
   compact: false,
   assumptions: {
@@ -85,37 +99,26 @@ module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
     setPublicClassFields: true,
     setSpreadProperties: true,
   },
-  browserslistEnv: latestBuild ? "modern" : "legacy",
+  browserslistEnv: latestBuild ? "modern" : `legacy${sw ? "-sw" : ""}`,
   presets: [
     [
       "@babel/preset-env",
       {
-        useBuiltIns: latestBuild ? false : "usage",
-        corejs: latestBuild ? false : dependencies["core-js"],
+        useBuiltIns: "usage",
+        corejs: dependencies["core-js"],
         bugfixes: true,
         shippedProposals: true,
       },
     ],
-    "@babel/preset-typescript",
   ],
   plugins: [
     [
-      path.resolve(
-        paths.polymer_dir,
-        "build-scripts/babel-plugins/inline-constants-plugin.cjs"
-      ),
+      path.join(BABEL_PLUGINS, "inline-constants-plugin.cjs"),
       {
         modules: ["@mdi/js"],
         ignoreModuleNotFound: true,
       },
     ],
-    [
-      path.resolve(
-        paths.polymer_dir,
-        "build-scripts/babel-plugins/custom-polyfill-plugin.js"
-      ),
-      { method: "usage-global" },
-    ],
     // Minify template literals for production
     isProdBuild && [
       "template-html-minifier",
@@ -143,16 +146,36 @@ module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
       "@babel/plugin-transform-runtime",
       { version: dependencies["@babel/runtime"] },
     ],
-    // Support  some proposals still in TC39 process
-    ["@babel/plugin-proposal-decorators", { decoratorsBeforeExport: true }],
+    "@babel/plugin-transform-class-properties",
+    "@babel/plugin-transform-private-methods",
   ].filter(Boolean),
   exclude: [
     // \\ for Windows, / for Mac OS and Linux
     /node_modules[\\/]core-js/,
-    /node_modules[\\/]webpack[\\/]buildin/,
   ],
   sourceMaps: !isTestBuild,
   overrides: [
+    {
+      // Add plugin to inject various polyfills, excluding the polyfills
+      // themselves to prevent self-injection.
+      plugins: [
+        [
+          path.join(BABEL_PLUGINS, "custom-polyfill-plugin.js"),
+          { method: "usage-global" },
+        ],
+      ],
+      exclude: [
+        path.join(paths.root_dir, "src/resources/polyfills"),
+        ...[
+          "@formatjs/(?:ecma402-abstract|intl-\\w+)",
+          "@lit-labs/virtualizer/polyfills",
+          "@webcomponents/scoped-custom-element-registry",
+          "element-internals-polyfill",
+          "proxy-polyfill",
+          "unfetch",
+        ].map((p) => new RegExp(`/node_modules/${p}/`)),
+      ],
+    },
     {
       // Use unambiguous for dependencies so that require() is correctly injected into CommonJS files
       // Exclusions are needed in some cases where ES modules have no static imports or exports, such as polyfills
@@ -202,7 +225,12 @@ module.exports.config = {
     return {
       name: "frontend" + nameSuffix(latestBuild),
       entry: {
-        service_worker: "./src/entrypoints/service_worker.ts",
+        "service-worker": !latestBuild
+          ? {
+              import: "./src/entrypoints/service-worker.ts",
+              layer: "sw",
+            }
+          : "./src/entrypoints/service-worker.ts",
         app: "./src/entrypoints/app.ts",
         authorize: "./src/entrypoints/authorize.ts",
         onboarding: "./src/entrypoints/onboarding.ts",
@@ -298,4 +326,17 @@ module.exports.config = {
       },
     };
   },
+
+  landingPage({ isProdBuild, latestBuild }) {
+    return {
+      name: "landing-page" + nameSuffix(latestBuild),
+      entry: {
+        entrypoint: path.resolve(paths.landingPage_dir, "src/entrypoint.js"),
+      },
+      outputPath: outputPath(paths.landingPage_output_root, latestBuild),
+      publicPath: publicPath(latestBuild),
+      isProdBuild,
+      latestBuild,
+    };
+  },
 };

build-scripts/env.cjs

@@ -2,34 +2,33 @@ const fs = require("fs");
 const path = require("path");
 const paths = require("./paths.cjs");
 
+const isTrue = (value) => value === "1" || value?.toLowerCase() === "true";
+
 module.exports = {
-  useRollup() {
-    return process.env.ROLLUP === "1";
-  },
-  useWDS() {
-    return process.env.WDS === "1";
-  },
   isProdBuild() {
     return (
       process.env.NODE_ENV === "production" || module.exports.isStatsBuild()
     );
   },
   isStatsBuild() {
-    return process.env.STATS === "1";
+    return isTrue(process.env.STATS);
   },
   isTestBuild() {
-    return process.env.IS_TEST === "true";
+    return isTrue(process.env.IS_TEST);
   },
   isNetlify() {
-    return process.env.NETLIFY === "true";
+    return isTrue(process.env.NETLIFY);
   },
   version() {
     const version = fs
-      .readFileSync(path.resolve(paths.polymer_dir, "pyproject.toml"), "utf8")
+      .readFileSync(path.resolve(paths.root_dir, "pyproject.toml"), "utf8")
       .match(/version\W+=\W"(\d{8}\.\d(?:\.dev)?)"/);
     if (!version) {
       throw Error("Version not found");
     }
     return version[1];
   },
+  isDevContainer() {
+    return isTrue(process.env.DEV_CONTAINER);
+  },
 };

build-scripts/eslint.config.mjs

@@ -0,0 +1,16 @@
+// @ts-check
+
+import tseslint from "typescript-eslint";
+import rootConfig from "../eslint.config.mjs";
+
+export default tseslint.config(...rootConfig, {
+  rules: {
+    "no-console": "off",
+    "import/no-extraneous-dependencies": "off",
+    "import/extensions": "off",
+    "import/no-dynamic-require": "off",
+    "global-require": "off",
+    "@typescript-eslint/no-require-imports": "off",
+    "prefer-arrow-callback": "off",
+  },
+});

build-scripts/gulp/app.js

@@ -6,11 +6,9 @@ import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
 import "./locale-data.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./wds.js";
-import "./webpack.js";
+import "./rspack.js";
 
 gulp.task(
   "develop-app",
@@ -27,11 +25,7 @@ gulp.task(
       "build-locale-data"
     ),
     "copy-static-app",
-    env.useWDS()
-      ? "wds-watch-app"
-      : env.useRollup()
-        ? "rollup-watch-app"
-        : "webpack-watch-app"
+    "rspack-watch-app"
   )
 );
 
@@ -44,9 +38,20 @@ gulp.task(
     "clean",
     gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
     "copy-static-app",
-    env.useRollup() ? "rollup-prod-app" : "webpack-prod-app",
+    "rspack-prod-app",
     gulp.parallel("gen-pages-app-prod", "gen-service-worker-app-prod"),
     // Don't compress running tests
-    ...(env.isTestBuild() ? [] : ["compress-app"])
+    ...(env.isTestBuild() || env.isStatsBuild() ? [] : ["compress-app"])
+  )
+);
+
+gulp.task(
+  "analyze-app",
+  gulp.series(
+    async function setEnv() {
+      process.env.STATS = "1";
+    },
+    "clean",
+    "rspack-prod-app"
   )
 );

build-scripts/gulp/cast.js

@@ -1,12 +1,10 @@
 import gulp from "gulp";
-import env from "../env.cjs";
 import "./clean.js";
 import "./entry-html.js";
 import "./gather-static.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";
 
 gulp.task(
   "develop-cast",
@@ -19,7 +17,7 @@ gulp.task(
     gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
     "copy-static-cast",
     "gen-pages-cast-dev",
-    env.useRollup() ? "rollup-dev-server-cast" : "webpack-dev-server-cast"
+    "rspack-dev-server-cast"
   )
 );
 
@@ -33,7 +31,7 @@ gulp.task(
     "translations-enable-merge-backend",
     gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
     "copy-static-cast",
-    env.useRollup() ? "rollup-prod-cast" : "webpack-prod-cast",
+    "rspack-prod-cast",
     "gen-pages-cast-prod"
   )
 );

build-scripts/gulp/clean.js

@@ -38,3 +38,14 @@ gulp.task(
     ])
   )
 );
+
+gulp.task(
+  "clean-landing-page",
+  gulp.parallel("clean-translations", async () =>
+    deleteSync([
+      paths.landingPage_output_root,
+      paths.landingPage_build,
+      paths.build_dir,
+    ])
+  )
+);

build-scripts/gulp/compress.js

@@ -1,16 +1,86 @@
 // Tasks to compress
 
+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}";
+const brotliOptions = {
+  skipLarger: true,
+  params: {
+    [constants.BROTLI_PARAM_QUALITY]: constants.BROTLI_MAX_QUALITY,
+  },
+};
 const zopfliOptions = { threshold: 150 };
 
-const compressDist = (rootDir) =>
+const compressModern = (rootDir, modernDir, compress) =>
   gulp
-    .src([`${rootDir}/**/*.{js,json,css,svg}`])
-    .pipe(zopfli(zopfliOptions))
+    .src([`${modernDir}/**/${filesGlob}`, `${rootDir}/sw-modern.js`], {
+      base: rootDir,
+      allowEmpty: true,
+    })
+    .pipe(compress === "zopfli" ? zopfli(zopfliOptions) : brotli(brotliOptions))
     .pipe(gulp.dest(rootDir));
 
-gulp.task("compress-app", () => compressDist(paths.app_output_root));
-gulp.task("compress-hassio", () => compressDist(paths.hassio_output_root));
+const compressOther = (rootDir, modernDir, compress) =>
+  gulp
+    .src(
+      [
+        `${rootDir}/**/${filesGlob}`,
+        `!${modernDir}/**/${filesGlob}`,
+        `!${rootDir}/{sw-modern,service_worker}.js`,
+        `${rootDir}/{authorize,onboarding}.html`,
+      ],
+      { base: rootDir, allowEmpty: true }
+    )
+    .pipe(compress === "zopfli" ? zopfli(zopfliOptions) : brotli(brotliOptions))
+    .pipe(gulp.dest(rootDir));
+
+const compressAppModernBrotli = () =>
+  compressModern(paths.app_output_root, paths.app_output_latest, "brotli");
+const compressAppModernZopfli = () =>
+  compressModern(paths.app_output_root, paths.app_output_latest, "zopfli");
+
+const compressHassioModernBrotli = () =>
+  compressModern(
+    paths.hassio_output_root,
+    paths.hassio_output_latest,
+    "brotli"
+  );
+const compressHassioModernZopfli = () =>
+  compressModern(
+    paths.hassio_output_root,
+    paths.hassio_output_latest,
+    "zopfli"
+  );
+
+const compressAppOtherBrotli = () =>
+  compressOther(paths.app_output_root, paths.app_output_latest, "brotli");
+const compressAppOtherZopfli = () =>
+  compressOther(paths.app_output_root, paths.app_output_latest, "zopfli");
+
+const compressHassioOtherBrotli = () =>
+  compressOther(paths.hassio_output_root, paths.hassio_output_latest, "brotli");
+const compressHassioOtherZopfli = () =>
+  compressOther(paths.hassio_output_root, paths.hassio_output_latest, "zopfli");
+
+gulp.task(
+  "compress-app",
+  gulp.parallel(
+    compressAppModernBrotli,
+    compressAppOtherBrotli,
+    compressAppModernZopfli,
+    compressAppOtherZopfli
+  )
+);
+gulp.task(
+  "compress-hassio",
+  gulp.parallel(
+    compressHassioModernBrotli,
+    compressHassioOtherBrotli,
+    compressHassioModernZopfli,
+    compressHassioOtherZopfli
+  )
+);

build-scripts/gulp/demo.js

@@ -1,13 +1,11 @@
 import gulp from "gulp";
-import env from "../env.cjs";
 import "./clean.js";
 import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";
 
 gulp.task(
   "develop-demo",
@@ -24,7 +22,7 @@ gulp.task(
       "build-locale-data"
     ),
     "copy-static-demo",
-    env.useRollup() ? "rollup-dev-server-demo" : "webpack-dev-server-demo"
+    "rspack-dev-server-demo"
   )
 );
 
@@ -39,7 +37,18 @@ gulp.task(
     "translations-enable-merge-backend",
     gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
     "copy-static-demo",
-    env.useRollup() ? "rollup-prod-demo" : "webpack-prod-demo",
+    "rspack-prod-demo",
     "gen-pages-demo-prod"
   )
 );
+
+gulp.task(
+  "analyze-demo",
+  gulp.series(
+    async function setEnv() {
+      process.env.STATS = "1";
+    },
+    "clean",
+    "rspack-prod-demo"
+  )
+);

build-scripts/gulp/download-translations.js

@@ -13,7 +13,7 @@ const srcMeta = "src/translations/translationMetadata.json";
 const encoding = "utf8";
 
 function hasHtml(data) {
-  return /<[a-z][\s\S]*>/i.test(data);
+  return /<\S*>/i.test(data);
 }
 
 function recursiveCheckHasHtml(file, data, errors, recKey) {
@@ -127,6 +127,7 @@ gulp.task("fetch-lokalise", async function () {
           replace_breaks: false,
           json_unescaped_slashes: true,
           export_empty_as: "skip",
+          filter_data: ["verified"],
         })
         .then((download) => fetch(download.bundle_url))
         .then((response) => {

build-scripts/gulp/entry-html.js

@@ -1,28 +1,74 @@
 // Tasks to generate entry HTML
 
+import {
+  applyVersionsToRegexes,
+  compileRegex,
+  getPreUserAgentRegexes,
+} from "browserslist-useragent-regexp";
 import fs from "fs-extra";
 import gulp from "gulp";
 import { minify } from "html-minifier-terser";
 import template from "lodash.template";
-import path from "path";
+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,
+// and it is not in the default user agent string. So we add an additional regex
+// to serve modern based on a minimum macOS version. We take the minimum Safari
+// major version from browserslist and manually map that to a supported macOS
+// version. Note this assumes the user has kept Safari updated.
+const HA_MACOS_REGEX =
+  /Home Assistant\/[\d.]+ \(.+; macOS (\d+)\.(\d+)(?:\.(\d+))?\)/;
+const SAFARI_TO_MACOS = {
+  15: [10, 15, 0],
+  16: [11, 0, 0],
+  17: [12, 0, 0],
+  18: [13, 0, 0],
+};
+
+const getCommonTemplateVars = () => {
+  const browserRegexes = getPreUserAgentRegexes({
+    env: "modern",
+    allowHigherVersions: true,
+    mobileToDesktop: true,
+    throwOnMissing: true,
+  });
+  const minSafariVersion = browserRegexes.find(
+    (regex) => regex.family === "safari"
+  )?.matchedVersions[0][0];
+  const minMacOSVersion = SAFARI_TO_MACOS[minSafariVersion];
+  if (!minMacOSVersion) {
+    throw Error(
+      `Could not find minimum MacOS version for Safari ${minSafariVersion}.`
+    );
+  }
+  const haMacOSRegex = applyVersionsToRegexes(
+    [
+      {
+        family: "ha_macos",
+        regex: HA_MACOS_REGEX,
+        matchedVersions: [minMacOSVersion],
+        requestVersions: [minMacOSVersion],
+      },
+    ],
+    { ignorePatch: true, allowHigherVersions: true }
+  );
+  return {
+    modernRegex: compileRegex(browserRegexes.concat(haMacOSRegex)).toString(),
+    hassUrl: process.env.HASS_URL || "",
+  };
+};
+
 const renderTemplate = (templateFile, data = {}) => {
   const compiled = template(
     fs.readFileSync(templateFile, { encoding: "utf-8" })
   );
   return compiled({
     ...data,
-    useRollup: env.useRollup(),
-    useWDS: env.useWDS(),
     // Resolve any child/nested templates relative to the parent and pass the same data
     renderTemplate: (childTemplate) =>
-      renderTemplate(
-        path.resolve(path.dirname(templateFile), childTemplate),
-        data
-      ),
+      renderTemplate(resolve(dirname(templateFile), childTemplate), data),
   });
 };
 
@@ -45,36 +91,32 @@ 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 = ""
   ) =>
   async () => {
+    const commonVars = getCommonTemplateVars();
     for (const [page, entries] of Object.entries(pageEntries)) {
       const content = renderTemplate(
-        path.resolve(inputRoot, inputSub, `${page}.template`),
+        resolve(inputRoot, inputSub, `${page}.template`),
         {
-          latestEntryJS: entries.map((entry) =>
-            useWDS
-              ? `http://localhost:8000/src/entrypoints/${entry}.ts`
-              : `${publicRoot}/frontend_latest/${entry}.js`
+          ...commonVars,
+          latestEntryJS: entries.map(
+            (entry) => `${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`,
         }
       );
-      fs.outputFileSync(path.resolve(outputRoot, page), content);
+      fs.outputFileSync(resolve(outputRoot, page), content);
     }
   };
 
@@ -91,16 +133,18 @@ const genPagesProdTask =
   ) =>
   async () => {
     const latestManifest = fs.readJsonSync(
-      path.resolve(outputLatest, "manifest.json")
+      resolve(outputLatest, "manifest.json")
     );
     const es5Manifest = outputES5
-      ? fs.readJsonSync(path.resolve(outputES5, "manifest.json"))
+      ? fs.readJsonSync(resolve(outputES5, "manifest.json"))
       : {};
+    const commonVars = getCommonTemplateVars();
     const minifiedHTML = [];
     for (const [page, entries] of Object.entries(pageEntries)) {
       const content = renderTemplate(
-        path.resolve(inputRoot, inputSub, `${page}.template`),
+        resolve(inputRoot, inputSub, `${page}.template`),
         {
+          ...commonVars,
           latestEntryJS: entries.map((entry) => latestManifest[`${entry}.js`]),
           es5EntryJS: entries.map((entry) => es5Manifest[`${entry}.js`]),
           latestCustomPanelJS: latestManifest["custom-panel.js"],
@@ -108,8 +152,8 @@ const genPagesProdTask =
         }
       );
       minifiedHTML.push(
-        minifyHtml(content, path.extname(page)).then((minified) =>
-          fs.outputFileSync(path.resolve(outputRoot, page), minified)
+        minifyHtml(content, extname(page)).then((minified) =>
+          fs.outputFileSync(resolve(outputRoot, page), minified)
         )
       );
     }
@@ -125,19 +169,14 @@ 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.root_dir, paths.app_output_root)
 );
 
 gulp.task(
   "gen-pages-app-prod",
   genPagesProdTask(
     APP_PAGE_ENTRIES,
-    paths.polymer_dir,
+    paths.root_dir,
     paths.app_output_root,
     paths.app_output_latest,
     paths.app_output_es5
@@ -206,6 +245,28 @@ gulp.task(
   )
 );
 
+const LANDING_PAGE_PAGE_ENTRIES = { "index.html": ["entrypoint"] };
+
+gulp.task(
+  "gen-pages-landing-page-dev",
+  genPagesDevTask(
+    LANDING_PAGE_PAGE_ENTRIES,
+    paths.landingPage_dir,
+    paths.landingPage_output_root
+  )
+);
+
+gulp.task(
+  "gen-pages-landing-page-prod",
+  genPagesProdTask(
+    LANDING_PAGE_PAGE_ENTRIES,
+    paths.landingPage_dir,
+    paths.landingPage_output_root,
+    paths.landingPage_output_latest,
+    paths.landingPage_output_es5
+  )
+);
+
 const HASSIO_PAGE_ENTRIES = { "entrypoint.js": ["entrypoint"] };
 
 gulp.task(
@@ -214,7 +275,6 @@ gulp.task(
     HASSIO_PAGE_ENTRIES,
     paths.hassio_dir,
     paths.hassio_output_root,
-    undefined,
     "src",
     paths.hassio_publicPath
   )

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

@@ -9,7 +9,7 @@ import gulp from "gulp";
 import jszip from "jszip";
 import path from "path";
 import process from "process";
-import tar from "tar";
+import { extract } from "tar";
 
 const MAX_AGE = 24; // hours
 const OWNER = "home-assistant";
@@ -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({
@@ -156,7 +156,7 @@ gulp.task("fetch-nightly-translations", async function () {
   console.log("Unpacking downloaded translations...");
   const zip = await jszip.loadAsync(downloadResponse.data);
   await deleteCurrent;
-  const extractStream = zip.file(/.*/)[0].nodeStream().pipe(tar.extract());
+  const extractStream = zip.file(/.*/)[0].nodeStream().pipe(extract());
   await new Promise((resolve, reject) => {
     extractStream.on("close", resolve).on("error", reject);
   });

build-scripts/gulp/gallery.js

@@ -4,16 +4,14 @@ import gulp from "gulp";
 import yaml from "js-yaml";
 import { marked } from "marked";
 import path from "path";
-import env from "../env.cjs";
 import paths from "../paths.cjs";
 import "./clean.js";
 import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";
 
 gulp.task("gather-gallery-pages", async function gatherPages() {
   const pageDir = path.resolve(paths.gallery_dir, "src/pages");
@@ -158,9 +156,7 @@ gulp.task(
     "copy-static-gallery",
     "gen-pages-gallery-dev",
     gulp.parallel(
-      env.useRollup()
-        ? "rollup-dev-server-gallery"
-        : "webpack-dev-server-gallery",
+      "rspack-dev-server-gallery",
       async function watchMarkdownFiles() {
         gulp.watch(
           [
@@ -189,7 +185,7 @@ gulp.task(
       "gather-gallery-pages"
     ),
     "copy-static-gallery",
-    env.useRollup() ? "rollup-prod-gallery" : "webpack-prod-gallery",
+    "rspack-prod-gallery",
     "gen-pages-gallery-prod"
   )
 );

build-scripts/gulp/gather-static.js

@@ -4,11 +4,10 @@ import fs from "fs-extra";
 import gulp from "gulp";
 import path from "path";
 import paths from "../paths.cjs";
-import env from "../env.cjs";
 
 const npmPath = (...parts) =>
-  path.resolve(paths.polymer_dir, "node_modules", ...parts);
-const polyPath = (...parts) => path.resolve(paths.polymer_dir, ...parts);
+  path.resolve(paths.root_dir, "node_modules", ...parts);
+const polyPath = (...parts) => path.resolve(paths.root_dir, ...parts);
 
 const copyFileDir = (fromFile, toDir) =>
   fs.copySync(fromFile, path.join(toDir, path.basename(fromFile)));
@@ -60,15 +59,17 @@ function copyPolyfills(staticDir) {
     npmPath("@webcomponents/webcomponentsjs/webcomponents-bundle.js.map"),
     staticPath("polyfills/")
   );
-}
+  // Lit polyfill support
+  fs.copySync(
+    npmPath("lit/polyfill-support.js"),
+    path.join(staticPath("polyfills/"), "lit-polyfill-support.js")
+  );
 
-function copyLoaderJS(staticDir) {
-  if (!env.useRollup()) {
-    return;
-  }
-  const staticPath = genStaticPath(staticDir);
-  copyFileDir(npmPath("systemjs/dist/s.min.js"), staticPath("js"));
-  copyFileDir(npmPath("systemjs/dist/s.min.js.map"), staticPath("js"));
+  // dialog-polyfill css
+  copyFileDir(
+    npmPath("dialog-polyfill/dialog-polyfill.css"),
+    staticPath("polyfills/")
+  );
 }
 
 function copyFonts(staticDir) {
@@ -94,12 +95,24 @@ function copyMapPanel(staticDir) {
     npmPath("leaflet/dist/leaflet.css"),
     staticPath("images/leaflet/")
   );
+  copyFileDir(
+    npmPath("leaflet.markercluster/dist/MarkerCluster.css"),
+    staticPath("images/leaflet/")
+  );
   fs.copySync(
     npmPath("leaflet/dist/images"),
     staticPath("images/leaflet/images/")
   );
 }
 
+function copyZXingWasm(staticDir) {
+  const staticPath = genStaticPath(staticDir);
+  copyFileDir(
+    npmPath("zxing-wasm/dist/reader/zxing_reader.wasm"),
+    staticPath("js")
+  );
+}
+
 gulp.task("copy-locale-data", async () => {
   const staticDir = paths.app_output_static;
   copyLocaleData(staticDir);
@@ -115,6 +128,11 @@ gulp.task("copy-translations-supervisor", async () => {
   copyTranslations(staticDir);
 });
 
+gulp.task("copy-translations-landing-page", async () => {
+  const staticDir = paths.landingPage_output_static;
+  copyTranslations(staticDir);
+});
+
 gulp.task("copy-static-supervisor", async () => {
   const staticDir = paths.hassio_output_static;
   copyLocaleData(staticDir);
@@ -125,8 +143,6 @@ gulp.task("copy-static-app", async () => {
   const staticDir = paths.app_output_static;
   // Basic static files
   fs.copySync(polyPath("public"), paths.app_output_root);
-
-  copyLoaderJS(staticDir);
   copyPolyfills(staticDir);
   copyFonts(staticDir);
   copyTranslations(staticDir);
@@ -137,6 +153,7 @@ gulp.task("copy-static-app", async () => {
   copyMapPanel(staticDir);
 
   // Qr Scanner assets
+  copyZXingWasm(staticDir);
   copyQrScannerWorker(staticDir);
 });
 
@@ -148,8 +165,6 @@ gulp.task("copy-static-demo", async () => {
   );
   // Copy demo static files
   fs.copySync(path.resolve(paths.demo_dir, "public"), paths.demo_output_root);
-
-  copyLoaderJS(paths.demo_output_static);
   copyPolyfills(paths.demo_output_static);
   copyMapPanel(paths.demo_output_static);
   copyFonts(paths.demo_output_static);
@@ -163,8 +178,6 @@ gulp.task("copy-static-cast", async () => {
   fs.copySync(polyPath("public/static"), paths.cast_output_static);
   // Copy cast static files
   fs.copySync(path.resolve(paths.cast_dir, "public"), paths.cast_output_root);
-
-  copyLoaderJS(paths.cast_output_static);
   copyPolyfills(paths.cast_output_static);
   copyMapPanel(paths.cast_output_static);
   copyFonts(paths.cast_output_static);
@@ -188,3 +201,14 @@ gulp.task("copy-static-gallery", async () => {
   copyLocaleData(paths.gallery_output_static);
   copyMdiIcons(paths.gallery_output_static);
 });
+
+gulp.task("copy-static-landing-page", async () => {
+  // Copy landing-page static files
+  fs.copySync(
+    path.resolve(paths.landingPage_dir, "public"),
+    paths.landingPage_output_root
+  );
+
+  copyFonts(paths.landingPage_output_static);
+  copyTranslations(paths.landingPage_output_static);
+});

build-scripts/gulp/hassio.js

@@ -5,9 +5,8 @@ import "./compress.js";
 import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
-import "./rollup.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";
 
 gulp.task(
   "develop-hassio",
@@ -22,7 +21,7 @@ gulp.task(
     "copy-translations-supervisor",
     "build-locale-data",
     "copy-static-supervisor",
-    env.useRollup() ? "rollup-watch-hassio" : "webpack-watch-hassio"
+    "rspack-watch-hassio"
   )
 );
 
@@ -38,7 +37,7 @@ gulp.task(
     "copy-translations-supervisor",
     "build-locale-data",
     "copy-static-supervisor",
-    env.useRollup() ? "rollup-prod-hassio" : "webpack-prod-hassio",
+    "rspack-prod-hassio",
     "gen-pages-hassio-prod",
     ...// Don't compress running tests
     (env.isTestBuild() ? [] : ["compress-hassio"])

build-scripts/gulp/index.mjs

@@ -0,0 +1,17 @@
+import "./app.js";
+import "./cast.js";
+import "./clean.js";
+import "./compress.js";
+import "./demo.js";
+import "./download-translations.js";
+import "./entry-html.js";
+import "./fetch-nightly-translations.js";
+import "./gallery.js";
+import "./gather-static.js";
+import "./gen-icons-json.js";
+import "./hassio.js";
+import "./landing-page.js";
+import "./locale-data.js";
+import "./rspack.js";
+import "./service-worker.js";
+import "./translations.js";

build-scripts/gulp/landing-page.js

@@ -0,0 +1,41 @@
+import gulp from "gulp";
+import "./clean.js";
+import "./compress.js";
+import "./entry-html.js";
+import "./gather-static.js";
+import "./gen-icons-json.js";
+import "./translations.js";
+import "./rspack.js";
+
+gulp.task(
+  "develop-landing-page",
+  gulp.series(
+    async function setEnv() {
+      process.env.NODE_ENV = "development";
+    },
+    "clean-landing-page",
+    "translations-enable-merge-backend",
+    "build-landing-page-translations",
+    "copy-translations-landing-page",
+    "build-locale-data",
+    "copy-static-landing-page",
+    "gen-pages-landing-page-dev",
+    "rspack-watch-landing-page"
+  )
+);
+
+gulp.task(
+  "build-landing-page",
+  gulp.series(
+    async function setEnv() {
+      process.env.NODE_ENV = "production";
+    },
+    "clean-landing-page",
+    "build-landing-page-translations",
+    "copy-translations-landing-page",
+    "build-locale-data",
+    "copy-static-landing-page",
+    "rspack-prod-landing-page",
+    "gen-pages-landing-page-prod"
+  )
+);

build-scripts/gulp/locale-data.js

@@ -4,7 +4,7 @@ import gulp from "gulp";
 import { join, resolve } from "node:path";
 import paths from "../paths.cjs";
 
-const formatjsDir = join(paths.polymer_dir, "node_modules", "@formatjs");
+const formatjsDir = join(paths.root_dir, "node_modules", "@formatjs");
 const outDir = join(paths.build_dir, "locale-data");
 
 const INTL_POLYFILLS = {
@@ -24,8 +24,11 @@ const convertToJSON = async (
 ) => {
   let localeData;
   try {
+    // use "pt" for "pt-BR", because "pt-BR" is unsupported by @formatjs
+    const language = lang === "pt-BR" ? "pt" : lang;
+
     localeData = await readFile(
-      join(formatjsDir, pkg, subDir, `${lang}.js`),
+      join(formatjsDir, pkg, subDir, `${language}.js`),
       "utf-8"
     );
   } catch (e) {

build-scripts/gulp/rollup.js

@@ -1,147 +0,0 @@
-// Tasks to run Rollup
-
-import log from "fancy-log";
-import gulp from "gulp";
-import http from "http";
-import open from "open";
-import path from "path";
-import { rollup } from "rollup";
-import handler from "serve-handler";
-import paths from "../paths.cjs";
-import rollupConfig from "../rollup.cjs";
-
-const bothBuilds = (createConfigFunc, params) =>
-  gulp.series(
-    async function buildLatest() {
-      await buildRollup(
-        createConfigFunc({
-          ...params,
-          latestBuild: true,
-        })
-      );
-    },
-    async function buildES5() {
-      await buildRollup(
-        createConfigFunc({
-          ...params,
-          latestBuild: false,
-        })
-      );
-    }
-  );
-
-function createServer(serveOptions) {
-  const server = http.createServer((request, response) =>
-    handler(request, response, {
-      public: serveOptions.root,
-    })
-  );
-
-  server.listen(
-    serveOptions.port,
-    serveOptions.networkAccess ? "0.0.0.0" : undefined,
-    () => {
-      log.info(`Available at http://localhost:${serveOptions.port}`);
-      open(`http://localhost:${serveOptions.port}`);
-    }
-  );
-}
-
-function watchRollup(createConfig, extraWatchSrc = [], serveOptions = null) {
-  const { inputOptions, outputOptions } = createConfig({
-    isProdBuild: false,
-    latestBuild: true,
-  });
-
-  const watcher = rollup.watch({
-    ...inputOptions,
-    output: [outputOptions],
-    watch: {
-      include: ["src/**"] + extraWatchSrc,
-    },
-  });
-
-  let startedHttp = false;
-
-  watcher.on("event", (event) => {
-    if (event.code === "BUNDLE_END") {
-      log(`Build done @ ${new Date().toLocaleTimeString()}`);
-    } else if (event.code === "ERROR") {
-      log.error(event.error);
-    } else if (event.code === "END") {
-      if (startedHttp || !serveOptions) {
-        return;
-      }
-      startedHttp = true;
-      createServer(serveOptions);
-    }
-  });
-
-  gulp.watch(
-    path.join(paths.translations_src, "en.json"),
-    gulp.series("build-translations", "copy-translations-app")
-  );
-}
-
-async function buildRollup(config) {
-  const bundle = await rollup.rollup(config.inputOptions);
-  await bundle.write(config.outputOptions);
-}
-
-gulp.task("rollup-watch-app", () => {
-  watchRollup(rollupConfig.createAppConfig);
-});
-
-gulp.task("rollup-watch-hassio", () => {
-  watchRollup(rollupConfig.createHassioConfig, ["hassio/src/**"]);
-});
-
-gulp.task("rollup-dev-server-demo", () => {
-  watchRollup(rollupConfig.createDemoConfig, ["demo/src/**"], {
-    root: paths.demo_output_root,
-    port: 8090,
-  });
-});
-
-gulp.task("rollup-dev-server-cast", () => {
-  watchRollup(rollupConfig.createCastConfig, ["cast/src/**"], {
-    root: paths.cast_output_root,
-    port: 8080,
-    networkAccess: true,
-  });
-});
-
-gulp.task("rollup-dev-server-gallery", () => {
-  watchRollup(rollupConfig.createGalleryConfig, ["gallery/src/**"], {
-    root: paths.gallery_output_root,
-    port: 8100,
-  });
-});
-
-gulp.task(
-  "rollup-prod-app",
-  bothBuilds(rollupConfig.createAppConfig, { isProdBuild: true })
-);
-
-gulp.task(
-  "rollup-prod-demo",
-  bothBuilds(rollupConfig.createDemoConfig, { isProdBuild: true })
-);
-
-gulp.task(
-  "rollup-prod-cast",
-  bothBuilds(rollupConfig.createCastConfig, { isProdBuild: true })
-);
-
-gulp.task("rollup-prod-hassio", () =>
-  bothBuilds(rollupConfig.createHassioConfig, { isProdBuild: true })
-);
-
-gulp.task("rollup-prod-gallery", () =>
-  buildRollup(
-    rollupConfig.createGalleryConfig({
-      isProdBuild: true,
-      latestBuild: true,
-    })
-  )
-);

build-scripts/gulp/rspack.js

@@ -1,11 +1,11 @@
-// Tasks to run webpack.
+// Tasks to run rspack.
 
 import fs from "fs";
 import path from "path";
 import log from "fancy-log";
 import gulp from "gulp";
-import webpack from "webpack";
-import WebpackDevServer from "webpack-dev-server";
+import rspack from "@rspack/core";
+import { RspackDevServer } from "@rspack/dev-server";
 import env from "../env.cjs";
 import paths from "../paths.cjs";
 import {
@@ -14,7 +14,8 @@ import {
   createDemoConfig,
   createGalleryConfig,
   createHassioConfig,
-} from "../webpack.cjs";
+  createLandingPageConfig,
+} from "../rspack.cjs";
 
 const bothBuilds = (createConfigFunc, params) => [
   createConfigFunc({ ...params, latestBuild: true }),
@@ -30,7 +31,7 @@ const isWsl =
 
 /**
  * @param {{
- *   compiler: import("webpack").Compiler,
+ *   compiler: import("@rspack/core").Compiler,
  *   contentBase: string,
  *   port: number,
  *   listenHost?: string
@@ -40,9 +41,14 @@ const runDevServer = async ({
   compiler,
   contentBase,
   port,
-  listenHost = "localhost",
+  listenHost = undefined,
+  proxy = undefined,
 }) => {
-  const server = new WebpackDevServer(
+  if (listenHost === undefined) {
+    // For dev container, we need to listen on all hosts
+    listenHost = env.isDevContainer() ? "0.0.0.0" : "localhost";
+  }
+  const server = new RspackDevServer(
     {
       hot: false,
       open: true,
@@ -52,13 +58,14 @@ const runDevServer = async ({
         directory: contentBase,
         watch: true,
       },
+      proxy,
     },
     compiler
   );
 
   await server.start();
   // Server listening
-  log("[webpack-dev-server]", `Project is running at http://localhost:${port}`);
+  log("[rspack-dev-server]", `Project is running at http://localhost:${port}`);
 };
 
 const doneHandler = (done) => (err, stats) => {
@@ -83,27 +90,27 @@ const doneHandler = (done) => (err, stats) => {
 
 const prodBuild = (conf) =>
   new Promise((resolve) => {
-    webpack(
+    rspack(
       conf,
-      // Resolve promise when done. Because we pass a callback, webpack closes itself
+      // Resolve promise when done. Because we pass a callback, rspack closes itself
       doneHandler(resolve)
     );
   });
 
-gulp.task("webpack-watch-app", () => {
+gulp.task("rspack-watch-app", () => {
   // This command will run forever because we don't close compiler
-  webpack(
+  rspack(
     process.env.ES5
       ? bothBuilds(createAppConfig, { isProdBuild: false })
       : createAppConfig({ isProdBuild: false, latestBuild: true })
   ).watch({ poll: isWsl }, doneHandler());
   gulp.watch(
     path.join(paths.translations_src, "en.json"),
-    gulp.series("create-translations", "copy-translations-app")
+    gulp.series("build-translations", "copy-translations-app")
   );
 });
 
-gulp.task("webpack-prod-app", () =>
+gulp.task("rspack-prod-app", () =>
   prodBuild(
     bothBuilds(createAppConfig, {
       isProdBuild: true,
@@ -113,25 +120,30 @@ gulp.task("webpack-prod-app", () =>
   )
 );
 
-gulp.task("webpack-dev-server-demo", () =>
+gulp.task("rspack-dev-server-demo", () =>
   runDevServer({
-    compiler: webpack(bothBuilds(createDemoConfig, { isProdBuild: false })),
+    compiler: rspack(
+      createDemoConfig({ isProdBuild: false, latestBuild: true })
+    ),
     contentBase: paths.demo_output_root,
     port: 8090,
   })
 );
 
-gulp.task("webpack-prod-demo", () =>
+gulp.task("rspack-prod-demo", () =>
   prodBuild(
     bothBuilds(createDemoConfig, {
       isProdBuild: true,
+      isStatsBuild: env.isStatsBuild(),
     })
   )
 );
 
-gulp.task("webpack-dev-server-cast", () =>
+gulp.task("rspack-dev-server-cast", () =>
   runDevServer({
-    compiler: webpack(bothBuilds(createCastConfig, { isProdBuild: false })),
+    compiler: rspack(
+      createCastConfig({ isProdBuild: false, latestBuild: true })
+    ),
     contentBase: paths.cast_output_root,
     port: 8080,
     // Accessible from the network, because that's how Cast hits it.
@@ -139,7 +151,7 @@ gulp.task("webpack-dev-server-cast", () =>
   })
 );
 
-gulp.task("webpack-prod-cast", () =>
+gulp.task("rspack-prod-cast", () =>
   prodBuild(
     bothBuilds(createCastConfig, {
       isProdBuild: true,
@@ -147,9 +159,9 @@ gulp.task("webpack-prod-cast", () =>
   )
 );
 
-gulp.task("webpack-watch-hassio", () => {
+gulp.task("rspack-watch-hassio", () => {
   // This command will run forever because we don't close compiler
-  webpack(
+  rspack(
     createHassioConfig({
       isProdBuild: false,
       latestBuild: true,
@@ -162,7 +174,7 @@ gulp.task("webpack-watch-hassio", () => {
   );
 });
 
-gulp.task("webpack-prod-hassio", () =>
+gulp.task("rspack-prod-hassio", () =>
   prodBuild(
     bothBuilds(createHassioConfig, {
       isProdBuild: true,
@@ -172,17 +184,18 @@ gulp.task("webpack-prod-hassio", () =>
   )
 );
 
-gulp.task("webpack-dev-server-gallery", () =>
+gulp.task("rspack-dev-server-gallery", () =>
   runDevServer({
-    // We don't use the es5 build, but the dev server will fuck up the publicPath if we don't
-    compiler: webpack(bothBuilds(createGalleryConfig, { isProdBuild: false })),
+    compiler: rspack(
+      createGalleryConfig({ isProdBuild: false, latestBuild: true })
+    ),
     contentBase: paths.gallery_output_root,
     port: 8100,
     listenHost: "0.0.0.0",
   })
 );
 
-gulp.task("webpack-prod-gallery", () =>
+gulp.task("rspack-prod-gallery", () =>
   prodBuild(
     createGalleryConfig({
       isProdBuild: true,
@@ -190,3 +203,30 @@ gulp.task("webpack-prod-gallery", () =>
     })
   )
 );
+
+gulp.task("rspack-watch-landing-page", () => {
+  // This command will run forever because we don't close compiler
+  rspack(
+    process.env.ES5
+      ? bothBuilds(createLandingPageConfig, { isProdBuild: false })
+      : createLandingPageConfig({ isProdBuild: false, latestBuild: true })
+  ).watch({ poll: isWsl }, doneHandler());
+
+  gulp.watch(
+    path.join(paths.translations_src, "en.json"),
+    gulp.series(
+      "build-landing-page-translations",
+      "copy-translations-landing-page"
+    )
+  );
+});
+
+gulp.task("rspack-prod-landing-page", () =>
+  prodBuild(
+    bothBuilds(createLandingPageConfig, {
+      isProdBuild: true,
+      isStatsBuild: env.isStatsBuild(),
+      isTestBuild: env.isTestBuild(),
+    })
+  )
+);

build-scripts/gulp/service-worker.js

@@ -1,20 +1,19 @@
-// Generate service worker.
-// Based on manifest, create a file with the content as service_worker.js
+// Generate service workers
 
-import fs from "fs-extra";
+import { deleteAsync } from "del";
 import gulp from "gulp";
-import path from "path";
-import sourceMapUrl from "source-map-url";
-import workboxBuild from "workbox-build";
+import { mkdir, readFile, symlink, writeFile } from "node:fs/promises";
+import { basename, join, relative } from "node:path";
+import { injectManifest } from "workbox-build";
 import paths from "../paths.cjs";
 
-const swDest = path.resolve(paths.app_output_root, "service_worker.js");
+const SW_MAP = {
+  [paths.app_output_latest]: "modern",
+  [paths.app_output_es5]: "legacy",
+};
 
-const writeSW = (content) => fs.outputFileSync(swDest, content.trim() + "\n");
-
-gulp.task("gen-service-worker-app-dev", (done) => {
-  writeSW(
-    `
+const SW_DEV =
+  `
 console.debug('Service worker disabled in development');
 
 self.addEventListener('install', (event) => {
@@ -22,72 +21,67 @@ self.addEventListener('install', (event) => {
   // removing any prod service worker the dev might have running
   self.skipWaiting();
 });
-  `
+  `.trim() + "\n";
+
+gulp.task("gen-service-worker-app-dev", async () => {
+  await mkdir(paths.app_output_root, { recursive: true });
+  await Promise.all(
+    Object.values(SW_MAP).map((build) =>
+      writeFile(join(paths.app_output_root, `sw-${build}.js`), SW_DEV, {
+        encoding: "utf-8",
+      })
+    )
   );
-  done();
 });
 
-gulp.task("gen-service-worker-app-prod", async () => {
-  // Read bundled source file
-  const bundleManifestLatest = fs.readJsonSync(
-    path.resolve(paths.app_output_latest, "manifest.json")
-  );
-  let serviceWorkerContent = fs.readFileSync(
-    paths.app_output_root + bundleManifestLatest["service_worker.js"],
-    "utf-8"
-  );
-
-  // Delete old file from frontend_latest so manifest won't pick it up
-  fs.removeSync(
-    paths.app_output_root + bundleManifestLatest["service_worker.js"]
-  );
-  fs.removeSync(
-    paths.app_output_root + bundleManifestLatest["service_worker.js.map"]
-  );
-
-  // Remove ES5
-  const bundleManifestES5 = fs.readJsonSync(
-    path.resolve(paths.app_output_es5, "manifest.json")
-  );
-  fs.removeSync(paths.app_output_root + bundleManifestES5["service_worker.js"]);
-  fs.removeSync(
-    paths.app_output_root + bundleManifestES5["service_worker.js.map"]
-  );
-
-  const workboxManifest = await workboxBuild.getManifest({
-    // Files that mach this pattern will be considered unique and skip revision check
-    // ignore JS files + translation files
-    dontCacheBustURLsMatching: /(frontend_latest\/.+|static\/translations\/.+)/,
-
-    globDirectory: paths.app_output_root,
-    globPatterns: [
-      "frontend_latest/*.js",
-      // Cache all English translations because we catch them as fallback
-      // Using pattern to match hash instead of * to avoid caching en-GB
-      // 'v' added as valid hash letter because in dev we hash with 'dev'
-      "static/translations/**/en-+([a-fv0-9]).json",
-      // Icon shown on splash screen
-      "static/icons/favicon-192x192.png",
-      "static/icons/favicon.ico",
-      // Common fonts
-      "static/fonts/roboto/Roboto-Light.woff2",
-      "static/fonts/roboto/Roboto-Medium.woff2",
-      "static/fonts/roboto/Roboto-Regular.woff2",
-      "static/fonts/roboto/Roboto-Bold.woff2",
-    ],
-  });
-
-  for (const warning of workboxManifest.warnings) {
-    console.warn(warning);
-  }
-
-  // remove source map and add WB manifest
-  serviceWorkerContent = sourceMapUrl.removeFrom(serviceWorkerContent);
-  serviceWorkerContent = serviceWorkerContent.replace(
-    "WB_MANIFEST",
-    JSON.stringify(workboxManifest.manifestEntries)
-  );
-
-  // Write new file to root
-  fs.writeFileSync(swDest, serviceWorkerContent);
-});
+gulp.task("gen-service-worker-app-prod", () =>
+  Promise.all(
+    Object.entries(SW_MAP).map(async ([outPath, build]) => {
+      const manifest = JSON.parse(
+        await readFile(join(outPath, "manifest.json"), "utf-8")
+      );
+      const swSrc = join(paths.app_output_root, manifest["service-worker.js"]);
+      const swDest = join(paths.app_output_root, `sw-${build}.js`);
+      const buildDir = relative(paths.app_output_root, outPath);
+      const { warnings } = await injectManifest({
+        swSrc,
+        swDest,
+        injectionPoint: "__WB_MANIFEST__",
+        // Files that mach this pattern will be considered unique and skip revision check
+        // ignore JS files + translation files
+        dontCacheBustURLsMatching: new RegExp(
+          `(?:${buildDir}/.+|static/translations/.+)`
+        ),
+        globDirectory: paths.app_output_root,
+        globPatterns: [
+          `${buildDir}/*.js`,
+          // Cache all English translations because we catch them as fallback
+          // Using pattern to match hash instead of * to avoid caching en-GB
+          // 'v' added as valid hash letter because in dev we hash with 'dev'
+          "static/translations/**/en-+([a-fv0-9]).json",
+          // Icon shown on splash screen
+          "static/icons/favicon-192x192.png",
+          "static/icons/favicon.ico",
+          // Common fonts
+          "static/fonts/roboto/Roboto-Light.woff2",
+          "static/fonts/roboto/Roboto-Medium.woff2",
+          "static/fonts/roboto/Roboto-Regular.woff2",
+          "static/fonts/roboto/Roboto-Bold.woff2",
+        ],
+        globIgnores: [`${buildDir}/service-worker*`],
+      });
+      if (warnings.length > 0) {
+        console.warn(
+          `Problems while injecting ${build} service worker:\n`,
+          warnings.join("\n")
+        );
+      }
+      await deleteAsync(`${swSrc}?(.map)`);
+      // Needed to install new SW from a cached HTML
+      if (build === "modern") {
+        const swOld = join(paths.app_output_root, "service_worker.js");
+        await symlink(basename(swDest), swOld);
+      }
+    })
+  )
+);

build-scripts/gulp/translations.js

@@ -1,92 +1,103 @@
-import { createHash } from "crypto";
-import { deleteSync } from "del";
-import { mkdirSync, readdirSync, readFileSync, renameSync } from "fs";
-import { writeFile } from "node:fs/promises";
+/* eslint-disable max-classes-per-file */
+
+import { deleteAsync } from "del";
+import { glob } from "glob";
 import gulp from "gulp";
-import flatmap from "gulp-flatmap";
-import transform from "gulp-json-transform";
-import merge from "gulp-merge-json";
 import rename from "gulp-rename";
-import path from "path";
-import vinylBuffer from "vinyl-buffer";
-import source from "vinyl-source-stream";
+import merge from "lodash.merge";
+import { createHash } from "node:crypto";
+import { mkdir, readFile } from "node:fs/promises";
+import { basename, join } from "node:path";
+import { PassThrough, Transform } from "node:stream";
+import { finished } from "node:stream/promises";
 import env from "../env.cjs";
 import paths from "../paths.cjs";
-import { mapFiles } from "../util.cjs";
 import "./fetch-nightly-translations.js";
 
 const inFrontendDir = "translations/frontend";
 const inBackendDir = "translations/backend";
 const workDir = "build/translations";
-const fullDir = workDir + "/full";
-const coreDir = workDir + "/core";
-const outDir = workDir + "/output";
+const outDir = join(workDir, "output");
+const EN_SRC = join(paths.translations_src, "en.json");
+const TEST_LOCALE = "en-x-test";
+
 let mergeBackend = false;
 
 gulp.task(
   "translations-enable-merge-backend",
-  gulp.parallel((done) => {
+  gulp.parallel(async () => {
     mergeBackend = true;
-    done();
   }, "allow-setup-fetch-nightly-translations")
 );
 
-// Panel translations which should be split from the core translations.
-const TRANSLATION_FRAGMENTS = Object.keys(
-  JSON.parse(
-    readFileSync(
-      path.resolve(paths.polymer_dir, "src/translations/en.json"),
-      "utf-8"
-    )
-  ).ui.panel
-);
+// Transform stream to apply a function on Vinyl JSON files (buffer mode only).
+// The provided function can either return a new object, or an array of
+// [object, subdirectory] pairs for fragmentizing the JSON.
+class CustomJSON extends Transform {
+  constructor(func, reviver = null) {
+    super({ objectMode: true });
+    this._func = func;
+    this._reviver = reviver;
+  }
 
-function recursiveFlatten(prefix, data) {
-  let output = {};
-  Object.keys(data).forEach((key) => {
-    if (typeof data[key] === "object") {
-      output = {
-        ...output,
-        ...recursiveFlatten(prefix + key + ".", data[key]),
-      };
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  async _transform(file, _, callback) {
+    let obj = JSON.parse(file.contents.toString(), this._reviver);
+    if (this._func) obj = this._func(obj, file.path);
+    for (const [outObj, dir] of Array.isArray(obj) ? obj : [[obj, ""]]) {
+      const outFile = file.clone({ contents: false });
+      outFile.contents = Buffer.from(JSON.stringify(outObj));
+      outFile.dirname += `/${dir}`;
+      this.push(outFile);
+    }
+    callback(null);
+  }
+}
+
+// Transform stream to merge Vinyl JSON files (buffer mode only).
+class MergeJSON extends Transform {
+  _objects = [];
+
+  constructor(stem, startObj = {}, reviver = null) {
+    super({ objectMode: true, allowHalfOpen: false });
+    this._stem = stem;
+    this._startObj = structuredClone(startObj);
+    this._reviver = reviver;
+  }
+
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  async _transform(file, _, callback) {
+    this._objects.push(JSON.parse(file.contents.toString(), this._reviver));
+    if (!this._outFile) this._outFile = file.clone({ contents: false });
+    callback(null);
+  }
+
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  async _flush(callback) {
+    const mergedObj = merge(this._startObj, ...this._objects);
+    this._outFile.contents = Buffer.from(JSON.stringify(mergedObj));
+    this._outFile.stem = this._stem;
+    callback(null, this._outFile);
+  }
+}
+
+// Utility to flatten object keys to single level using separator
+const flatten = (data, prefix = "", sep = ".") => {
+  const output = {};
+  for (const [key, value] of Object.entries(data)) {
+    if (typeof value === "object") {
+      Object.assign(output, flatten(value, prefix + key + sep, sep));
     } else {
-      output[prefix + key] = data[key];
+      output[prefix + key] = value;
     }
-  });
+  }
   return output;
-}
+};
 
-function flatten(data) {
-  return recursiveFlatten("", data);
-}
-
-function emptyFilter(data) {
-  const newData = {};
-  Object.keys(data).forEach((key) => {
-    if (data[key]) {
-      if (typeof data[key] === "object") {
-        newData[key] = emptyFilter(data[key]);
-      } else {
-        newData[key] = data[key];
-      }
-    }
-  });
-  return newData;
-}
-
-function recursiveEmpty(data) {
-  const newData = {};
-  Object.keys(data).forEach((key) => {
-    if (data[key]) {
-      if (typeof data[key] === "object") {
-        newData[key] = recursiveEmpty(data[key]);
-      } else {
-        newData[key] = "TRANSLATED";
-      }
-    }
-  });
-  return newData;
-}
+// Filter functions that can be passed directly to JSON.parse()
+const emptyReviver = (_key, value) => value || undefined;
+const testReviver = (_key, value) =>
+  value && typeof value === "string" ? "TRANSLATED" : value;
 
 /**
  * Replace Lokalise key placeholders with their actual values.
@@ -95,60 +106,44 @@ function recursiveEmpty(data) {
  * be included in src/translations/en.json, but still be usable while
  * developing locally.
  *
- * @link https://docs.lokalise.co/article/KO5SZWLLsy-key-referencing
+ * @link https://docs.lokalise.com/en/articles/1400528-key-referencing
  */
-const re_key_reference = /\[%key:([^%]+)%\]/;
-function lokaliseTransform(data, original, file) {
+const KEY_REFERENCE = /\[%key:([^%]+)%\]/;
+const lokaliseTransform = (data, path, original = data) => {
   const output = {};
-  Object.entries(data).forEach(([key, value]) => {
-    if (value instanceof Object) {
-      output[key] = lokaliseTransform(value, original, file);
+  for (const [key, value] of Object.entries(data)) {
+    if (typeof value === "object") {
+      output[key] = lokaliseTransform(value, path, original);
     } else {
-      output[key] = value.replace(re_key_reference, (_match, lokalise_key) => {
+      output[key] = value.replace(KEY_REFERENCE, (_match, lokalise_key) => {
         const replace = lokalise_key.split("::").reduce((tr, k) => {
           if (!tr) {
-            throw Error(
-              `Invalid key placeholder ${lokalise_key} in ${file.path}`
-            );
+            throw Error(`Invalid key placeholder ${lokalise_key} in ${path}`);
           }
           return tr[k];
         }, original);
         if (typeof replace !== "string") {
-          throw Error(
-            `Invalid key placeholder ${lokalise_key} in ${file.path}`
-          );
+          throw Error(`Invalid key placeholder ${lokalise_key} in ${path}`);
         }
         return replace;
       });
     }
-  });
+  }
   return output;
-}
+};
 
-gulp.task("clean-translations", async () => deleteSync([workDir]));
+gulp.task("clean-translations", () => deleteAsync([workDir]));
 
-gulp.task("ensure-translations-build-dir", async () => {
-  mkdirSync(workDir, { recursive: true });
-});
+const makeWorkDir = () => mkdir(workDir, { recursive: true });
 
-gulp.task("create-test-metadata", () =>
-  env.isProdBuild()
-    ? Promise.resolve()
-    : writeFile(
-        workDir + "/testMetadata.json",
-        JSON.stringify({ test: { nativeName: "Test" } })
-      )
-);
-
-gulp.task("create-test-translation", () =>
+const createTestTranslation = () =>
   env.isProdBuild()
     ? Promise.resolve()
     : gulp
-        .src(path.join(paths.translations_src, "en.json"))
-        .pipe(transform((data, _file) => recursiveEmpty(data)))
-        .pipe(rename("test.json"))
-        .pipe(gulp.dest(workDir))
-);
+        .src(EN_SRC)
+        .pipe(new CustomJSON(null, testReviver))
+        .pipe(rename(`${TEST_LOCALE}.json`))
+        .pipe(gulp.dest(workDir));
 
 /**
  * This task will build a master translation file, to be used as the base for
@@ -159,278 +154,174 @@ gulp.task("create-test-translation", () =>
  * project is buildable immediately after merging new translation keys, since
  * the Lokalise update to translations/en.json will not happen immediately.
  */
-gulp.task("build-master-translation", () => {
-  const src = [path.join(paths.translations_src, "en.json")];
+const createMasterTranslation = () =>
+  gulp
+    .src([EN_SRC, ...(mergeBackend ? [`${inBackendDir}/en.json`] : [])])
+    .pipe(new CustomJSON(lokaliseTransform))
+    .pipe(new MergeJSON("en"))
+    .pipe(gulp.dest(workDir));
 
-  if (mergeBackend) {
-    src.push(path.join(inBackendDir, "en.json"));
+const FRAGMENTS = ["base"];
+
+const setFragment = (fragment) => async () => {
+  FRAGMENTS[0] = fragment;
+};
+
+const panelFragment = (fragment) =>
+  fragment !== "base" &&
+  fragment !== "supervisor" &&
+  fragment !== "landing-page";
+
+const HASHES = new Map();
+
+const createTranslations = async () => {
+  // Parse and store the master to avoid repeating this for each locale, then
+  // add the panel fragments when processing the app.
+  const enMaster = JSON.parse(await readFile(`${workDir}/en.json`, "utf-8"));
+  if (FRAGMENTS[0] === "base") {
+    FRAGMENTS.push(...Object.keys(enMaster.ui.panel));
   }
 
-  return gulp
-    .src(src)
-    .pipe(transform((data, file) => lokaliseTransform(data, data, file)))
+  // The downstream pipeline is setup first.  It hashes the merged data for
+  // each locale, then fragmentizes and flattens the data for final output.
+  const translationFiles = await glob([
+    `${inFrontendDir}/!(en).json`,
+    ...(env.isProdBuild() ? [] : [`${workDir}/${TEST_LOCALE}.json`]),
+  ]);
+  const hashStream = new Transform({
+    objectMode: true,
+    transform: async (file, _, callback) => {
+      const hash = env.isProdBuild()
+        ? createHash("md5").update(file.contents).digest("hex")
+        : "dev";
+      HASHES.set(file.stem, hash);
+      file.stem += `-${hash}`;
+      callback(null, file);
+    },
+  }).setMaxListeners(translationFiles.length + 1);
+  const fragmentsStream = hashStream
     .pipe(
-      merge({
-        fileName: "en.json",
-      })
-    )
-    .pipe(gulp.dest(fullDir));
-});
-
-gulp.task("build-merged-translations", () =>
-  gulp
-    .src([
-      inFrontendDir + "/*.json",
-      "!" + inFrontendDir + "/en.json",
-      ...(env.isProdBuild() ? [] : [workDir + "/test.json"]),
-    ])
-    .pipe(transform((data, file) => lokaliseTransform(data, data, file)))
-    .pipe(
-      flatmap((stream, file) => {
-        // For each language generate a merged json file. It begins with the master
-        // translation as a failsafe for untranslated strings, and merges all parent
-        // tags into one file for each specific subtag
-        //
-        // TODO: This is a naive interpretation of BCP47 that should be improved.
-        //       Will be OK for now as long as we don't have anything more complicated
-        //       than a base translation + region.
-        const tr = path.basename(file.history[0], ".json");
-        const subtags = tr.split("-");
-        const src = [fullDir + "/en.json"];
-        for (let i = 1; i <= subtags.length; i++) {
-          const lang = subtags.slice(0, i).join("-");
-          if (lang === "test") {
-            src.push(workDir + "/test.json");
-          } else if (lang !== "en") {
-            src.push(inFrontendDir + "/" + lang + ".json");
-            if (mergeBackend) {
-              src.push(inBackendDir + "/" + lang + ".json");
-            }
+      new CustomJSON((data) =>
+        FRAGMENTS.map((fragment) => {
+          switch (fragment) {
+            case "base":
+              // Remove the panels and supervisor to create the base translations
+              return [
+                flatten({
+                  ...data,
+                  ui: { ...data.ui, panel: undefined },
+                  supervisor: undefined,
+                }),
+                "",
+              ];
+            case "supervisor":
+              // Supervisor key is at the top level
+              return [flatten(data.supervisor), ""];
+            case "landing-page":
+              // landing-page key is at the top level
+              return [flatten(data["landing-page"]), ""];
+            default:
+              // Create a fragment with only the given panel
+              return [
+                flatten(data.ui.panel[fragment], `ui.panel.${fragment}.`),
+                fragment,
+              ];
           }
-        }
-        return gulp
-          .src(src, { allowEmpty: true })
-          .pipe(transform((data) => emptyFilter(data)))
-          .pipe(
-            merge({
-              fileName: tr + ".json",
-            })
-          )
-          .pipe(gulp.dest(fullDir));
-      })
-    )
-);
-
-let taskName;
-
-const splitTasks = [];
-TRANSLATION_FRAGMENTS.forEach((fragment) => {
-  taskName = "build-translation-fragment-" + fragment;
-  gulp.task(taskName, () =>
-    // Return only the translations for this fragment.
-    gulp
-      .src(fullDir + "/*.json")
-      .pipe(
-        transform((data) => ({
-          ui: {
-            panel: {
-              [fragment]: data.ui.panel[fragment],
-            },
-          },
-        }))
-      )
-      .pipe(gulp.dest(workDir + "/" + fragment))
-  );
-  splitTasks.push(taskName);
-});
-
-taskName = "build-translation-core";
-gulp.task(taskName, () =>
-  // Remove the fragment translations from the core translation.
-  gulp
-    .src(fullDir + "/*.json")
-    .pipe(
-      transform((data, _file) => {
-        TRANSLATION_FRAGMENTS.forEach((fragment) => {
-          delete data.ui.panel[fragment];
-        });
-        delete data.supervisor;
-        return data;
-      })
-    )
-    .pipe(gulp.dest(coreDir))
-);
-
-splitTasks.push(taskName);
-
-gulp.task("build-flattened-translations", () =>
-  // Flatten the split versions of our translations, and move them into outDir
-  gulp
-    .src(
-      TRANSLATION_FRAGMENTS.map(
-        (fragment) => workDir + "/" + fragment + "/*.json"
-      ).concat(coreDir + "/*.json"),
-      { base: workDir }
-    )
-    .pipe(
-      transform((data) =>
-        // Polymer.AppLocalizeBehavior requires flattened json
-        flatten(data)
+        })
       )
     )
-    .pipe(
-      rename((filePath) => {
-        if (filePath.dirname === "core") {
-          filePath.dirname = "";
+    .pipe(gulp.dest(outDir));
+
+  // Send the English master downstream first, then for each other locale
+  // generate merged JSON data to continue piping. It begins with the master
+  // translation as a failsafe for untranslated strings, and merges all parent
+  // tags into one file for each specific subtag
+  //
+  // TODO: This is a naive interpretation of BCP47 that should be improved.
+  //       Will be OK for now as long as we don't have anything more complicated
+  // than a base translation + region.
+  const masterStream = gulp
+    .src(`${workDir}/en.json`)
+    .pipe(new PassThrough({ objectMode: true }));
+  masterStream.pipe(hashStream, { end: false });
+  const mergesFinished = [finished(masterStream)];
+  for (const translationFile of translationFiles) {
+    const locale = basename(translationFile, ".json");
+    const subtags = locale.split("-");
+    const mergeFiles = [];
+    for (let i = 1; i <= subtags.length; i++) {
+      const lang = subtags.slice(0, i).join("-");
+      if (lang === TEST_LOCALE) {
+        mergeFiles.push(`${workDir}/${TEST_LOCALE}.json`);
+      } else if (lang !== "en") {
+        mergeFiles.push(`${inFrontendDir}/${lang}.json`);
+        if (mergeBackend) {
+          mergeFiles.push(`${inBackendDir}/${lang}.json`);
         }
-        // In dev we create the file with the fake hash in the filename
-        if (!env.isProdBuild()) {
-          filePath.basename += "-dev";
-        }
-      })
-    )
-    .pipe(gulp.dest(outDir))
-);
-
-const fingerprints = {};
-
-gulp.task("build-translation-fingerprints", () => {
-  // Fingerprint full file of each language
-  const files = readdirSync(fullDir);
-
-  for (let i = 0; i < files.length; i++) {
-    fingerprints[files[i].split(".")[0]] = {
-      // In dev we create fake hashes
-      hash: env.isProdBuild()
-        ? createHash("md5")
-            .update(readFileSync(path.join(fullDir, files[i]), "utf-8"))
-            .digest("hex")
-        : "dev",
-    };
-  }
-
-  // In dev we create the file with the fake hash in the filename
-  if (env.isProdBuild()) {
-    mapFiles(outDir, ".json", (filename) => {
-      const parsed = path.parse(filename);
-
-      // nl.json -> nl-<hash>.json
-      if (!(parsed.name in fingerprints)) {
-        throw new Error(`Unable to find hash for ${filename}`);
       }
-
-      renameSync(
-        filename,
-        `${parsed.dir}/${parsed.name}-${fingerprints[parsed.name].hash}${
-          parsed.ext
-        }`
-      );
-    });
+    }
+    const mergeStream = gulp
+      .src(mergeFiles, { allowEmpty: true })
+      .pipe(new MergeJSON(locale, enMaster, emptyReviver));
+    mergesFinished.push(finished(mergeStream));
+    mergeStream.pipe(hashStream, { end: false });
   }
 
-  const stream = source("translationFingerprints.json");
-  stream.write(JSON.stringify(fingerprints));
-  process.nextTick(() => stream.end());
-  return stream.pipe(vinylBuffer()).pipe(gulp.dest(workDir));
-});
+  // Wait for all merges to finish, then it's safe to end writing to the
+  // downstream pipeline and wait for all fragments to finish writing.
+  await Promise.all(mergesFinished);
+  hashStream.end();
+  await finished(fragmentsStream);
+};
 
-gulp.task("build-translation-fragment-supervisor", () =>
+const writeTranslationMetaData = () =>
   gulp
-    .src(fullDir + "/*.json")
-    .pipe(transform((data) => data.supervisor))
+    .src([`${paths.translations_src}/translationMetadata.json`])
     .pipe(
-      rename((filePath) => {
-        // In dev we create the file with the fake hash in the filename
+      new CustomJSON((meta) => {
+        // Add the test translation in development.
         if (!env.isProdBuild()) {
-          filePath.basename += "-dev";
+          meta[TEST_LOCALE] = { nativeName: "Translation Test" };
         }
-      })
-    )
-    .pipe(gulp.dest(workDir + "/supervisor"))
-);
-
-gulp.task("build-translation-flatten-supervisor", () =>
-  gulp
-    .src(workDir + "/supervisor/*.json")
-    .pipe(
-      transform((data) =>
-        // Polymer.AppLocalizeBehavior requires flattened json
-        flatten(data)
-      )
-    )
-    .pipe(gulp.dest(outDir))
-);
-
-gulp.task("build-translation-write-metadata", () =>
-  gulp
-    .src([
-      path.join(paths.translations_src, "translationMetadata.json"),
-      ...(env.isProdBuild() ? [] : [workDir + "/testMetadata.json"]),
-      workDir + "/translationFingerprints.json",
-    ])
-    .pipe(merge({}))
-    .pipe(
-      transform((data) => {
-        const newData = {};
-        Object.entries(data).forEach(([key, value]) => {
-          // Filter out translations without native name.
-          if (value.nativeName) {
-            newData[key] = value;
-          } else {
+        // Filter out locales without a native name, and add the hashes.
+        for (const locale of Object.keys(meta)) {
+          if (!meta[locale].nativeName) {
+            meta[locale] = undefined;
             console.warn(
-              `Skipping language ${key}. Native name was not translated.`
+              `Skipping locale ${locale} because native name is not translated.`
             );
+          } else {
+            meta[locale].hash = HASHES.get(locale);
           }
-        });
-        return newData;
+        }
+        return {
+          fragments: FRAGMENTS.filter(panelFragment),
+          translations: meta,
+        };
       })
     )
-    .pipe(
-      transform((data) => ({
-        fragments: TRANSLATION_FRAGMENTS,
-        translations: data,
-      }))
-    )
-    .pipe(rename("translationMetadata.json"))
-    .pipe(gulp.dest(workDir))
-);
-
-gulp.task(
-  "create-translations",
-  gulp.series(
-    gulp.parallel("create-test-metadata", "create-test-translation"),
-    "build-master-translation",
-    "build-merged-translations",
-    gulp.parallel(...splitTasks),
-    "build-flattened-translations"
-  )
-);
+    .pipe(gulp.dest(workDir));
 
 gulp.task(
   "build-translations",
   gulp.series(
     gulp.parallel(
       "fetch-nightly-translations",
-      gulp.series("clean-translations", "ensure-translations-build-dir")
+      gulp.series("clean-translations", makeWorkDir)
     ),
-    "create-translations",
-    "build-translation-fingerprints",
-    "build-translation-write-metadata"
+    createTestTranslation,
+    createMasterTranslation,
+    createTranslations,
+    writeTranslationMetaData
   )
 );
 
 gulp.task(
   "build-supervisor-translations",
-  gulp.series(
-    gulp.parallel(
-      "fetch-nightly-translations",
-      gulp.series("clean-translations", "ensure-translations-build-dir")
-    ),
-    "build-master-translation",
-    "build-merged-translations",
-    "build-translation-fragment-supervisor",
-    "build-translation-flatten-supervisor",
-    "build-translation-fingerprints",
-    "build-translation-write-metadata"
-  )
+  gulp.series(setFragment("supervisor"), "build-translations")
+);
+
+gulp.task(
+  "build-landing-page-translations",
+  gulp.series(setFragment("landing-page"), "build-translations")
 );

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,
-    },
-  });
-});

build-scripts/list-plugins-and-polyfills.js

@@ -16,6 +16,7 @@ const detailsClose = "</details>\n";
 
 const dummyAPI = {
   version: babelVersion,
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   assertVersion: () => {},
   caller: (callback) =>
     callback({

build-scripts/paths.cjs

@@ -1,7 +1,7 @@
 const path = require("path");
 
 module.exports = {
-  polymer_dir: path.resolve(__dirname, ".."),
+  root_dir: path.resolve(__dirname, ".."),
 
   build_dir: path.resolve(__dirname, "../build"),
   app_output_root: path.resolve(__dirname, "../hass_frontend"),
@@ -33,6 +33,22 @@ module.exports = {
   ),
   gallery_output_static: path.resolve(__dirname, "../gallery/dist/static"),
 
+  landingPage_dir: path.resolve(__dirname, "../landing-page"),
+  landingPage_build: path.resolve(__dirname, "../landing-page/build"),
+  landingPage_output_root: path.resolve(__dirname, "../landing-page/dist"),
+  landingPage_output_latest: path.resolve(
+    __dirname,
+    "../landing-page/dist/frontend_latest"
+  ),
+  landingPage_output_es5: path.resolve(
+    __dirname,
+    "../landing-page/dist/frontend_es5"
+  ),
+  landingPage_output_static: path.resolve(
+    __dirname,
+    "../landing-page/dist/static"
+  ),
+
   hassio_dir: path.resolve(__dirname, "../hassio"),
   hassio_output_root: path.resolve(__dirname, "../hassio/build"),
   hassio_output_static: path.resolve(__dirname, "../hassio/build/static"),

build-scripts/rollup-plugins/dont-hash-plugin.cjs

@@ -1,14 +0,0 @@
-module.exports = function (opts = {}) {
-  const dontHash = opts.dontHash || new Set();
-
-  return {
-    name: "dont-hash",
-    renderChunk(_code, chunk, _options) {
-      if (!chunk.isEntry || !dontHash.has(chunk.name)) {
-        return null;
-      }
-      chunk.fileName = `${chunk.name}.js`;
-      return null;
-    },
-  };
-};

build-scripts/rollup-plugins/ignore-plugin.cjs

@@ -1,24 +0,0 @@
-module.exports = function (userOptions = {}) {
-  // Files need to be absolute paths.
-  // This only works if the file has no exports
-  // and only is imported for its side effects
-  const files = userOptions.files || [];
-
-  if (files.length === 0) {
-    return {
-      name: "ignore",
-    };
-  }
-
-  return {
-    name: "ignore",
-
-    load(id) {
-      return files.some((toIgnorePath) => id.startsWith(toIgnorePath))
-        ? {
-            code: "",
-          }
-        : null;
-    },
-  };
-};

build-scripts/rollup-plugins/manifest-plugin.cjs

@@ -1,34 +0,0 @@
-const url = require("url");
-
-const defaultOptions = {
-  publicPath: "",
-};
-
-module.exports = function (userOptions = {}) {
-  const options = { ...defaultOptions, ...userOptions };
-
-  return {
-    name: "manifest",
-    generateBundle(outputOptions, bundle) {
-      const manifest = {};
-
-      for (const chunk of Object.values(bundle)) {
-        if (!chunk.isEntry) {
-          continue;
-        }
-        // Add js extension to mimic Webpack manifest.
-        manifest[`${chunk.name}.js`] = url.resolve(
-          options.publicPath,
-          chunk.fileName
-        );
-      }
-
-      this.emitFile({
-        type: "asset",
-        source: JSON.stringify(manifest, undefined, 2),
-        name: "manifest.json",
-        fileName: "manifest.json",
-      });
-    },
-  };
-};

build-scripts/rollup-plugins/worker-plugin.cjs

@@ -1,152 +0,0 @@
-// Worker plugin
-// Each worker will include all of its dependencies
-// instead of relying on an importer.
-
-// Forked from v.1.4.1
-// https://github.com/surma/rollup-plugin-off-main-thread
-/**
- * Copyright 2018 Google Inc. All Rights Reserved.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *     http://www.apache.org/licenses/LICENSE-2.0
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-const rollup = require("rollup");
-const path = require("path");
-const MagicString = require("magic-string");
-
-const defaultOpts = {
-  // A RegExp to find `new Workers()` calls. The second capture group _must_
-  // capture the provided file name without the quotes.
-  workerRegexp: /new Worker\((["'])(.+?)\1(,[^)]+)?\)/g,
-  plugins: ["node-resolve", "commonjs", "babel", "terser", "ignore"],
-};
-
-async function getBundledWorker(workerPath, rollupOptions) {
-  const bundle = await rollup.rollup({
-    ...rollupOptions,
-    input: {
-      worker: workerPath,
-    },
-  });
-  const { output } = await bundle.generate({
-    // Generates cleanest output, we shouldn't have any imports/exports
-    // that would be incompatible with ES5.
-    format: "es",
-    // We should not export anything. This will fail build if we are.
-    exports: "none",
-  });
-
-  let code;
-
-  for (const chunkOrAsset of output) {
-    if (chunkOrAsset.name === "worker") {
-      code = chunkOrAsset.code;
-    } else if (chunkOrAsset.type !== "asset") {
-      throw new Error("Unexpected extra output");
-    }
-  }
-
-  return code;
-}
-
-module.exports = function (opts = {}) {
-  opts = { ...defaultOpts, ...opts };
-
-  let rollupOptions;
-  let refIds;
-
-  return {
-    name: "hass-worker",
-
-    async buildStart(options) {
-      refIds = {};
-      rollupOptions = {
-        plugins: options.plugins.filter((plugin) =>
-          opts.plugins.includes(plugin.name)
-        ),
-      };
-    },
-
-    async transform(code, id) {
-      // Copy the regexp as they are stateful and this hook is async.
-      const workerRegexp = new RegExp(
-        opts.workerRegexp.source,
-        opts.workerRegexp.flags
-      );
-      if (!workerRegexp.test(code)) {
-        return undefined;
-      }
-
-      const ms = new MagicString(code);
-      // Reset the regexp
-      workerRegexp.lastIndex = 0;
-      for (;;) {
-        const match = workerRegexp.exec(code);
-        if (!match) {
-          break;
-        }
-
-        const workerFile = match[2];
-        let optionsObject = {};
-        // Parse the optional options object
-        if (match[3] && match[3].length > 0) {
-          // FIXME: ooooof!
-          // eslint-disable-next-line @typescript-eslint/no-implied-eval
-          optionsObject = new Function(`return ${match[3].slice(1)};`)();
-        }
-        delete optionsObject.type;
-
-        if (!/^.*\//.test(workerFile)) {
-          this.warn(
-            `Paths passed to the Worker constructor must be relative or absolute, i.e. start with /, ./ or ../ (just like dynamic import!). Ignoring "${workerFile}".`
-          );
-          continue;
-        }
-
-        // Find worker file and store it as a chunk with ID prefixed for our loader
-        // eslint-disable-next-line no-await-in-loop
-        const resolvedWorkerFile = (await this.resolve(workerFile, id)).id;
-        let chunkRefId;
-        if (resolvedWorkerFile in refIds) {
-          chunkRefId = refIds[resolvedWorkerFile];
-        } else {
-          this.addWatchFile(resolvedWorkerFile);
-          // eslint-disable-next-line no-await-in-loop
-          const source = await getBundledWorker(
-            resolvedWorkerFile,
-            rollupOptions
-          );
-          chunkRefId = refIds[resolvedWorkerFile] = this.emitFile({
-            name: path.basename(resolvedWorkerFile),
-            source,
-            type: "asset",
-          });
-        }
-
-        const workerParametersStartIndex = match.index + "new Worker(".length;
-        const workerParametersEndIndex =
-          match.index + match[0].length - ")".length;
-
-        ms.overwrite(
-          workerParametersStartIndex,
-          workerParametersEndIndex,
-          `import.meta.ROLLUP_FILE_URL_${chunkRefId}, ${JSON.stringify(
-            optionsObject
-          )}`
-        );
-      }
-
-      return {
-        code: ms.toString(),
-        map: ms.generateMap({ hires: true }),
-      };
-    },
-  };
-};

build-scripts/rollup.cjs

@@ -1,146 +0,0 @@
-const path = require("path");
-
-const commonjs = require("@rollup/plugin-commonjs");
-const resolve = require("@rollup/plugin-node-resolve");
-const json = require("@rollup/plugin-json");
-const { babel } = require("@rollup/plugin-babel");
-const replace = require("@rollup/plugin-replace");
-const visualizer = require("rollup-plugin-visualizer");
-const { string } = require("rollup-plugin-string");
-const { terser } = require("rollup-plugin-terser");
-const manifest = require("./rollup-plugins/manifest-plugin.cjs");
-const worker = require("./rollup-plugins/worker-plugin.cjs");
-const dontHashPlugin = require("./rollup-plugins/dont-hash-plugin.cjs");
-const ignore = require("./rollup-plugins/ignore-plugin.cjs");
-
-const bundle = require("./bundle.cjs");
-const paths = require("./paths.cjs");
-
-const extensions = [".js", ".ts"];
-
-/**
- * @param {Object} arg
- * @param { import("rollup").InputOption } arg.input
- */
-const createRollupConfig = ({
-  entry,
-  outputPath,
-  defineOverlay,
-  isProdBuild,
-  latestBuild,
-  isStatsBuild,
-  publicPath,
-  dontHash,
-  isWDS,
-}) => ({
-  /**
-   * @type { import("rollup").InputOptions }
-   */
-  inputOptions: {
-    input: entry,
-    // Some entry points contain no JavaScript. This setting silences a warning about that.
-    // https://rollupjs.org/configuration-options/#preserveentrysignatures
-    preserveEntrySignatures: false,
-    plugins: [
-      ignore({
-        files: bundle
-          .emptyPackages({ latestBuild })
-          // TEMP HACK: Makes Rollup build work again
-          .concat(
-            require.resolve(
-              "@webcomponents/scoped-custom-element-registry/scoped-custom-element-registry.min"
-            )
-          ),
-      }),
-      resolve({
-        extensions,
-        preferBuiltins: false,
-        browser: true,
-        rootDir: paths.polymer_dir,
-      }),
-      commonjs(),
-      json(),
-      babel({
-        ...bundle.babelOptions({ latestBuild, isProdBuild }),
-        extensions,
-        babelHelpers: isWDS ? "inline" : "bundled",
-      }),
-      string({
-        // Import certain extensions as strings
-        include: [path.join(paths.polymer_dir, "node_modules/**/*.css")],
-      }),
-      replace(bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })),
-      !isWDS &&
-        manifest({
-          publicPath,
-        }),
-      !isWDS && worker(),
-      !isWDS && dontHashPlugin({ dontHash }),
-      !isWDS && isProdBuild && terser(bundle.terserOptions({ latestBuild })),
-      !isWDS &&
-        isStatsBuild &&
-        visualizer({
-          // https://github.com/btd/rollup-plugin-visualizer#options
-          open: true,
-          sourcemap: true,
-        }),
-    ].filter(Boolean),
-  },
-  /**
-   * @type { import("rollup").OutputOptions }
-   */
-  outputOptions: {
-    // https://rollupjs.org/configuration-options/#output-dir
-    dir: outputPath,
-    // https://rollupjs.org/configuration-options/#output-format
-    format: latestBuild ? "es" : "systemjs",
-    // https://rollupjs.org/configuration-options/#output-externallivebindings
-    externalLiveBindings: false,
-    // https://rollupjs.org/configuration-options/#output-entryfilenames
-    // https://rollupjs.org/configuration-options/#output-chunkfilenames
-    // https://rollupjs.org/configuration-options/#output-assetfilenames
-    entryFileNames:
-      isProdBuild && !isStatsBuild ? "[name]-[hash].js" : "[name].js",
-    chunkFileNames: isProdBuild && !isStatsBuild ? "c.[hash].js" : "[name].js",
-    assetFileNames: isProdBuild && !isStatsBuild ? "a.[hash].js" : "[name].js",
-    // https://rollupjs.org/configuration-options/#output-sourcemap
-    sourcemap: isProdBuild ? true : "inline",
-  },
-});
-
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild, isWDS }) =>
-  createRollupConfig(
-    bundle.config.app({
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-      isWDS,
-    })
-  );
-
-const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
-  createRollupConfig(
-    bundle.config.demo({
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-    })
-  );
-
-const createCastConfig = ({ isProdBuild, latestBuild }) =>
-  createRollupConfig(bundle.config.cast({ isProdBuild, latestBuild }));
-
-const createHassioConfig = ({ isProdBuild, latestBuild }) =>
-  createRollupConfig(bundle.config.hassio({ isProdBuild, latestBuild }));
-
-const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
-  createRollupConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
-
-module.exports = {
-  createAppConfig,
-  createDemoConfig,
-  createCastConfig,
-  createHassioConfig,
-  createGalleryConfig,
-  createRollupConfig,
-};

build-scripts/rspack.cjs

@@ -1,12 +1,18 @@
 const { existsSync } = require("fs");
 const path = require("path");
-const webpack = require("webpack");
+const rspack = require("@rspack/core");
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const { RsdoctorRspackPlugin } = require("@rsdoctor/rspack-plugin");
+// eslint-disable-next-line @typescript-eslint/naming-convention
 const { StatsWriterPlugin } = require("webpack-stats-plugin");
-const filterStats = require("@bundle-stats/plugin-webpack-filter").default;
+const filterStats = require("@bundle-stats/plugin-webpack-filter");
+// eslint-disable-next-line @typescript-eslint/naming-convention
 const TerserPlugin = require("terser-webpack-plugin");
-const { WebpackManifestPlugin } = require("webpack-manifest-plugin");
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const { WebpackManifestPlugin } = require("rspack-manifest-plugin");
 const log = require("fancy-log");
-const WebpackBar = require("webpackbar");
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const WebpackBar = require("webpackbar/rspack");
 const paths = require("./paths.cjs");
 const bundle = require("./bundle.cjs");
 
@@ -24,7 +30,7 @@ class LogStartCompilePlugin {
   }
 }
 
-const createWebpackConfig = ({
+const createRspackConfig = ({
   name,
   entry,
   outputPath,
@@ -59,17 +65,32 @@ const createWebpackConfig = ({
       rules: [
         {
           test: /\.m?js$|\.ts$/,
-          use: {
-            loader: "babel-loader",
-            options: {
-              ...bundle.babelOptions({ latestBuild, isProdBuild, isTestBuild }),
-              cacheDirectory: !isProdBuild,
-              cacheCompression: false,
+          exclude: /node_modules[\\/]core-js/,
+          use: (info) => [
+            {
+              loader: "babel-loader",
+              options: {
+                ...bundle.babelOptions({
+                  latestBuild,
+                  isProdBuild,
+                  isTestBuild,
+                  sw: info.issuerLayer === "sw",
+                }),
+                cacheDirectory: !isProdBuild,
+                cacheCompression: false,
+              },
             },
-          },
+            {
+              loader: "builtin:swc-loader",
+              options: bundle.swcOptions(),
+            },
+          ],
           resolve: {
             fullySpecified: false,
           },
+          parser: {
+            worker: ["*context.audioWorklet.addModule()", "..."],
+          },
         },
         {
           test: /\.css$/,
@@ -88,11 +109,20 @@ const createWebpackConfig = ({
       moduleIds: isProdBuild && !isStatsBuild ? "deterministic" : "named",
       chunkIds: isProdBuild && !isStatsBuild ? "deterministic" : "named",
       splitChunks: {
-        // Disable splitting for web workers with ESM output
-        // Imports of external chunks are broken
-        chunks: latestBuild
-          ? (chunk) => !chunk.canBeInitial() && !/^.+-worker$/.test(chunk.name)
-          : undefined,
+        // Disable splitting for web workers and worklets because imports of
+        // external chunks are broken for:
+        chunks: !isProdBuild
+          ? // improve incremental build speed, but blows up bundle size
+            new RegExp(
+              `^(?!(${Object.keys(entry).join("|")}|.*work(?:er|let))$)`
+            )
+          : // - ESM output: https://github.com/webpack/webpack/issues/17014
+            // - Worklets use `importScripts`: https://github.com/webpack/webpack/issues/11543
+            (chunk) =>
+              !chunk.canBeInitial() &&
+              !new RegExp(
+                `^.+-work${latestBuild ? "(?:let|er)" : "let"}$`
+              ).test(chunk.name),
       },
     },
     plugins: [
@@ -101,10 +131,10 @@ const createWebpackConfig = ({
         // Only include the JS of entrypoints
         filter: (file) => file.isInitial && !file.name.endsWith(".map"),
       }),
-      new webpack.DefinePlugin(
+      new rspack.DefinePlugin(
         bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
       ),
-      new webpack.IgnorePlugin({
+      new rspack.IgnorePlugin({
         checkResource(resource, context) {
           // Only use ignore to intercept imports that we don't control
           // inside node_module dependencies.
@@ -113,7 +143,8 @@ const createWebpackConfig = ({
             // calling define.amd will call require("!!webpack amd options")
             resource.startsWith("!!webpack") ||
             // loaded by webpack dev server but doesn't exist.
-            resource === "webpack/hot"
+            resource === "webpack/hot" ||
+            resource.startsWith("@swc/helpers")
           ) {
             return false;
           }
@@ -136,23 +167,10 @@ const createWebpackConfig = ({
           );
         },
       }),
-      new webpack.NormalModuleReplacementPlugin(
-        new RegExp(
-          bundle.emptyPackages({ latestBuild, isHassioBuild }).join("|")
-        ),
-        path.resolve(paths.polymer_dir, "src/util/empty.js")
+      new rspack.NormalModuleReplacementPlugin(
+        new RegExp(bundle.emptyPackages({ isHassioBuild }).join("|")),
+        path.resolve(paths.root_dir, "src/util/empty.js")
       ),
-      // See `src/resources/intl-polyfill-legacy.ts` for explanation
-      !latestBuild &&
-        new webpack.NormalModuleReplacementPlugin(
-          new RegExp(
-            path.resolve(paths.polymer_dir, "src/resources/intl-polyfill.ts")
-          ),
-          path.resolve(
-            paths.polymer_dir,
-            "src/resources/intl-polyfill-legacy.ts"
-          )
-        ),
       !isProdBuild && new LogStartCompilePlugin(),
       isProdBuild &&
         new StatsWriterPlugin({
@@ -163,10 +181,20 @@ const createWebpackConfig = ({
           stats: { assets: true, chunks: true, modules: true },
           transform: (stats) => JSON.stringify(filterStats(stats)),
         }),
+      isProdBuild &&
+        isStatsBuild &&
+        new RsdoctorRspackPlugin({
+          reportDir: path.join(paths.build_dir, "rsdoctor"),
+          features: ["plugins", "bundle"],
+          supports: {
+            generateTileGraph: true,
+          },
+        }),
     ].filter(Boolean),
     resolve: {
       extensions: [".ts", ".js", ".json"],
       alias: {
+        "lit/static-html$": "lit/static-html.js",
         "lit/decorators$": "lit/decorators.js",
         "lit/directive$": "lit/directive.js",
         "lit/directives/until$": "lit/directives/until.js",
@@ -175,8 +203,10 @@ const createWebpackConfig = ({
         "lit/directives/if-defined$": "lit/directives/if-defined.js",
         "lit/directives/guard$": "lit/directives/guard.js",
         "lit/directives/cache$": "lit/directives/cache.js",
+        "lit/directives/join$": "lit/directives/join.js",
         "lit/directives/repeat$": "lit/directives/repeat.js",
         "lit/directives/live$": "lit/directives/live.js",
+        "lit/directives/keyed$": "lit/directives/keyed.js",
         "lit/polyfill-support$": "lit/polyfill-support.js",
         "@lit-labs/virtualizer/layouts/grid":
           "@lit-labs/virtualizer/layouts/grid.js",
@@ -198,8 +228,6 @@ const createWebpackConfig = ({
         isProdBuild && !isStatsBuild ? "[id].[contenthash][ext]" : "[id][ext]",
       crossOriginLoading: "use-credentials",
       hashFunction: "xxhash64",
-      hashDigest: "base64url",
-      hashDigestLength: 11, // full length of 64 bit base64url
       path: outputPath,
       publicPath,
       // To silence warning in worker plugin
@@ -229,6 +257,7 @@ const createWebpackConfig = ({
       ),
     },
     experiments: {
+      layers: true,
       outputModule: true,
     },
   };
@@ -240,17 +269,17 @@ const createAppConfig = ({
   isStatsBuild,
   isTestBuild,
 }) =>
-  createWebpackConfig(
+  createRspackConfig(
     bundle.config.app({ isProdBuild, latestBuild, isStatsBuild, isTestBuild })
   );
 
 const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
-  createWebpackConfig(
+  createRspackConfig(
     bundle.config.demo({ isProdBuild, latestBuild, isStatsBuild })
   );
 
 const createCastConfig = ({ isProdBuild, latestBuild }) =>
-  createWebpackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
+  createRspackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
 
 const createHassioConfig = ({
   isProdBuild,
@@ -258,7 +287,7 @@ const createHassioConfig = ({
   isStatsBuild,
   isTestBuild,
 }) =>
-  createWebpackConfig(
+  createRspackConfig(
     bundle.config.hassio({
       isProdBuild,
       latestBuild,
@@ -268,7 +297,10 @@ const createHassioConfig = ({
   );
 
 const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
-  createWebpackConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
+  createRspackConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
+
+const createLandingPageConfig = ({ isProdBuild, latestBuild }) =>
+  createRspackConfig(bundle.config.landingPage({ isProdBuild, latestBuild }));
 
 module.exports = {
   createAppConfig,
@@ -276,5 +308,6 @@ module.exports = {
   createCastConfig,
   createHassioConfig,
   createGalleryConfig,
-  createWebpackConfig,
+  createRspackConfig,
+  createLandingPageConfig,
 };

build-scripts/util.cjs

@@ -1,16 +0,0 @@
-const path = require("path");
-const fs = require("fs");
-
-// Helper function to map recursively over files in a folder and it's subfolders
-module.exports.mapFiles = function mapFiles(startPath, filter, mapFunc) {
-  const files = fs.readdirSync(startPath);
-  for (let i = 0; i < files.length; i++) {
-    const filename = path.join(startPath, files[i]);
-    const stat = fs.lstatSync(filename);
-    if (stat.isDirectory()) {
-      mapFiles(filename, filter, mapFunc);
-    } else if (filename.indexOf(filter) >= 0) {
-      mapFunc(filename);
-    }
-  }
-};

cast/README.md

@@ -25,7 +25,7 @@ Home Assistant Cast is made up of two separate applications:
 
 ### Setting dev variables
 
-Open `src/cast/dev_const.ts` and change `CAST_DEV_APP_ID` to the ID of the app you just created. And set the `CAST_DEV_HASS_URL` to the url of you development machine.
+Open `src/cast/dev_const.ts` and change `CAST_DEV_APP_ID` to the ID of the app you just created. And set the `CAST_DEV_HASS_URL` to the url of your development machine.
 
 ### Changing configuration
 

cast/public/manifest.json

@@ -14,5 +14,5 @@
   "name": "Home Assistant Cast",
   "short_name": "HA Cast",
   "start_url": "/?homescreen=1",
-  "theme_color": "#03A9F4"
+  "theme_color": "#009ac7"
 }

cast/public/sw-legacy.js

@@ -0,0 +1,5 @@
+"use strict";
+
+self.addEventListener("fetch", (event) => {
+  event.respondWith(fetch(event.request));
+});

cast/rollup.config.js

@@ -1,10 +0,0 @@
-import rollup from "../build-scripts/rollup.cjs";
-import env from "../build-scripts/env.cjs";
-
-const config = rollup.createCastConfig({
-  isProdBuild: env.isProdBuild(),
-  latestBuild: true,
-  isStatsBuild: env.isStatsBuild(),
-});
-
-export default { ...config.inputOptions, output: config.outputOptions };

cast/src/html/faq.html.template

@@ -36,13 +36,7 @@
   </head>
   <body>
     <%= renderTemplate("../../../src/html/_js_base.html.template") %>
-    <script>
-      <% for (const entry of latestEntryJS) { %>
-        import("<%= entry %>");
-      <% } %>
-      window.latestJS = true;
-    </script>
-    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
+    <%= renderTemplate("../../../src/html/_script_loader.html.template") %>
     <hc-layout subtitle="FAQ">
       <style>
         a {
@@ -145,7 +139,7 @@
         </p>
       </div>
 
-      <div class="section-header">Wat does Home Assistant Cast do?</div>
+      <div class="section-header">What does Home Assistant Cast do?</div>
       <div class="card-content">
         <p>
           Home Assistant Cast is a receiver application for the Chromecast. When
@@ -232,17 +226,5 @@ http:
         </p>
       </div>
     </hc-layout>
-
-    <script>
-      var _gaq = [["_setAccount", "UA-57927901-9"], ["_trackPageview"]];
-      (function (d, t) {
-        var g = d.createElement(t),
-          s = d.getElementsByTagName(t)[0];
-        g.src =
-          ("https:" == location.protocol ? "//ssl" : "//www") +
-          ".google-analytics.com/ga.js";
-        s.parentNode.insertBefore(g, s);
-      })(document, "script");
-    </script>
   </body>
 </html>

cast/src/html/index.html.template

@@ -13,15 +13,9 @@
     <%= renderTemplate("_social_meta.html.template") %>
   </head>
   <body>
-    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
     <hc-connect></hc-connect>
-    <script>
-      <% for (const entry of latestEntryJS) { %>
-        import("<%= entry %>");
-      <% } %>
-      window.latestJS = true;
-    </script>
-    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
+    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
+    <%= renderTemplate("../../../src/html/_script_loader.html.template") %>
     <script>
     (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
     (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),

cast/src/html/media.html.template

@@ -14,22 +14,10 @@
         --background-color: #41bdf5;
       }
     </style>
-    <script>
-      var _gaq=[['_setAccount','UA-57927901-10'],['_trackPageview']];
-      (function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
-      g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';
-      s.parentNode.insertBefore(g,s)}(document,'script'));
-    </script>
   </head>
   <body>
-    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
     <cast-media-player></cast-media-player>
-    <script>
-      <% for (const entry of latestEntryJS) { %>
-        import("<%= entry %>");
-      <% } %>
-      window.latestJS = true;
-    </script>
-    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
+    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
+    <%= renderTemplate("../../../src/html/_script_loader.html.template") %>
   </body>
 </html>

cast/src/html/receiver.html.template

@@ -7,14 +7,7 @@
   <%= renderTemplate("../../../src/html/_style_base.html.template") %>
   <style>
     body {
-      background-color: white;
       font-size: initial;
     }
   </style>
-  <script>
-  var _gaq=[['_setAccount','UA-57927901-10'],['_trackPageview']];
-  (function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
-  g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';
-  s.parentNode.insertBefore(g,s)}(document,'script'));
-  </script>
 </html>

cast/src/launcher/entrypoint.ts

@@ -1,4 +1,3 @@
-import "../../../src/resources/safari-14-attachshadow-patch";
 import "./layout/hc-connect";
 
-import("../../../src/resources/ha-style");
+import("../../../src/resources/append-ha-style");

cast/src/launcher/layout/hc-cast.ts

@@ -1,11 +1,10 @@
-import "@material/mwc-button/mwc-button";
-import { mdiCast, mdiCastConnected } from "@mdi/js";
-import "@polymer/paper-item/paper-icon-item";
-import "@polymer/paper-listbox/paper-listbox";
-import { Auth, Connection } from "home-assistant-js-websocket";
-import { CSSResultGroup, LitElement, TemplateResult, css, html } from "lit";
+import type { ActionDetail } from "@material/mwc-list/mwc-list";
+import { mdiCast, mdiCastConnected, mdiViewDashboard } from "@mdi/js";
+import type { Auth, Connection } from "home-assistant-js-websocket";
+import type { TemplateResult } from "lit";
+import { LitElement, css, html } from "lit";
 import { customElement, property, state } from "lit/decorators";
-import { CastManager } from "../../../../src/cast/cast_manager";
+import type { CastManager } from "../../../../src/cast/cast_manager";
 import {
   castSendShowLovelaceView,
   ensureConnectedCastSession,
@@ -17,25 +16,27 @@ import {
 } from "../../../../src/common/auth/token_storage";
 import { atLeastVersion } from "../../../../src/common/config/version";
 import { toggleAttribute } from "../../../../src/common/dom/toggle_attribute";
+import "../../../../src/components/ha-button";
 import "../../../../src/components/ha-icon";
+import "../../../../src/components/ha-list";
+import "../../../../src/components/ha-list-item";
 import "../../../../src/components/ha-svg-icon";
 import {
   getLegacyLovelaceCollection,
   getLovelaceCollection,
 } from "../../../../src/data/lovelace";
 import { isStrategyDashboard } from "../../../../src/data/lovelace/config/types";
-import { LovelaceViewConfig } from "../../../../src/data/lovelace/config/view";
+import type { LovelaceViewConfig } from "../../../../src/data/lovelace/config/view";
 import "../../../../src/layouts/hass-loading-screen";
-import { generateDefaultViewConfig } from "../../../../src/panels/lovelace/common/generate-lovelace-config";
 import "./hc-layout";
 
 @customElement("hc-cast")
 class HcCast extends LitElement {
-  @property() public auth!: Auth;
+  @property({ attribute: false }) public auth!: Auth;
 
-  @property() public connection!: Connection;
+  @property({ attribute: false }) public connection!: Connection;
 
-  @property() public castManager!: CastManager;
+  @property({ attribute: false }) public castManager!: CastManager;
 
   @state() private askWrite = false;
 
@@ -60,12 +61,20 @@ class HcCast extends LitElement {
               <p class="question action-item">
                 Stay logged in?
                 <span>
-                  <mwc-button @click=${this._handleSaveTokens}>
+                  <ha-button
+                    appearance="plain"
+                    size="small"
+                    @click=${this._handleSaveTokens}
+                  >
                     YES
-                  </mwc-button>
-                  <mwc-button @click=${this._handleSkipSaveTokens}>
+                  </ha-button>
+                  <ha-button
+                    appearance="plain"
+                    size="small"
+                    @click=${this._handleSkipSaveTokens}
+                  >
                     NO
-                  </mwc-button>
+                  </ha-button>
                 </span>
               </p>
             `
@@ -75,53 +84,67 @@ class HcCast extends LitElement {
           : !this.castManager.status
             ? html`
                 <p class="center-item">
-                  <mwc-button raised @click=${this._handleLaunch}>
-                    <ha-svg-icon .path=${mdiCast}></ha-svg-icon>
+                  <ha-button @click=${this._handleLaunch}>
+                    <ha-svg-icon slot="start" .path=${mdiCast}></ha-svg-icon>
                     Start Casting
-                  </mwc-button>
+                  </ha-button>
                 </p>
               `
             : html`
                 <div class="section-header">PICK A VIEW</div>
-                <paper-listbox
-                  attr-for-selected="data-path"
-                  .selected=${this.castManager.status.lovelacePath || ""}
-                >
+                <ha-list @action=${this._handlePickView} activatable>
                   ${(
                     this.lovelaceViews ?? [
-                      generateDefaultViewConfig({}, {}, {}, {}, () => ""),
+                      {
+                        title: "Home",
+                      },
                     ]
                   ).map(
                     (view, idx) => html`
-                      <paper-icon-item
-                        @click=${this._handlePickView}
-                        data-path=${view.path || idx}
+                      <ha-list-item
+                        graphic="avatar"
+                        .activated=${this.castManager.status?.lovelacePath ===
+                        (view.path ?? idx)}
+                        .selected=${this.castManager.status?.lovelacePath ===
+                        (view.path ?? idx)}
                       >
+                        ${view.title || view.path || "Unnamed view"}
                         ${view.icon
                           ? html`
                               <ha-icon
                                 .icon=${view.icon}
-                                slot="item-icon"
+                                slot="graphic"
                               ></ha-icon>
                             `
-                          : ""}
-                        ${view.title || view.path}
-                      </paper-icon-item>
+                          : html`<ha-svg-icon
+                              slot="item-icon"
+                              .path=${mdiViewDashboard}
+                            ></ha-svg-icon>`}
+                      </ha-list-item>
                     `
-                  )}
-                </paper-listbox>
+                  )}</ha-list
+                >
               `}
+
         <div class="card-actions">
           ${this.castManager.status
             ? html`
-                <mwc-button @click=${this._handleLaunch}>
-                  <ha-svg-icon .path=${mdiCastConnected}></ha-svg-icon>
+                <ha-button appearance="plain" @click=${this._handleLaunch}>
+                  <ha-svg-icon
+                    slot="start"
+                    .path=${mdiCastConnected}
+                  ></ha-svg-icon>
                   Manage
-                </mwc-button>
+                </ha-button>
               `
             : ""}
           <div class="spacer"></div>
-          <mwc-button @click=${this._handleLogout}>Log out</mwc-button>
+          <ha-button
+            variant="danger"
+            appearance="plain"
+            @click=${this._handleLogout}
+            >Log out</ha-button
+          >
         </div>
       </hc-layout>
     `;
@@ -182,8 +205,8 @@ class HcCast extends LitElement {
     this.castManager.requestSession();
   }
 
-  private async _handlePickView(ev: Event) {
-    const path = (ev.currentTarget as any).getAttribute("data-path");
+  private async _handlePickView(ev: CustomEvent<ActionDetail>) {
+    const path = this.lovelaceViews![ev.detail.index].path ?? ev.detail.index;
     await ensureConnectedCastSession(this.castManager!, this.auth!);
     castSendShowLovelaceView(this.castManager, this.auth.data.hassUrl, path);
   }
@@ -197,83 +220,65 @@ class HcCast extends LitElement {
       }
       this.connection.close();
       location.reload();
-    } catch (err: any) {
+    } catch (_err: any) {
       alert("Unable to log out!");
     }
   }
 
-  static get styles(): CSSResultGroup {
-    return css`
-      .center-item {
-        display: flex;
-        justify-content: space-around;
-      }
+  static styles = css`
+    .center-item {
+      display: flex;
+      justify-content: space-around;
+    }
 
-      .action-item {
-        display: flex;
-        align-items: center;
-        justify-content: space-between;
-      }
+    .action-item {
+      display: flex;
+      align-items: center;
+      justify-content: space-between;
+    }
 
-      .question {
-        position: relative;
-        padding: 8px 16px;
-      }
+    .question {
+      position: relative;
+      padding: 8px 16px;
+    }
 
-      .question:before {
-        border-radius: 4px;
-        position: absolute;
-        top: 0;
-        right: 0;
-        bottom: 0;
-        left: 0;
-        pointer-events: none;
-        content: "";
-        background-color: var(--primary-color);
-        opacity: 0.12;
-        will-change: opacity;
-      }
+    .question:before {
+      border-radius: var(--ha-border-radius-sm);
+      position: absolute;
+      top: 0;
+      right: 0;
+      bottom: 0;
+      left: 0;
+      pointer-events: none;
+      content: "";
+      background-color: var(--primary-color);
+      opacity: 0.12;
+      will-change: opacity;
+    }
 
-      .connection,
-      .connection a {
-        color: var(--secondary-text-color);
-      }
+    .connection,
+    .connection a {
+      color: var(--secondary-text-color);
+    }
 
-      mwc-button ha-svg-icon {
-        margin-right: 8px;
-        height: 18px;
-      }
+    ha-list-item ha-icon,
+    ha-list-item ha-svg-icon {
+      padding: 12px;
+      color: var(--secondary-text-color);
+    }
 
-      paper-listbox {
-        padding-top: 0;
-      }
+    :host([hide-icons]) ha-icon {
+      display: none;
+    }
 
-      paper-listbox ha-icon {
-        padding: 12px;
-        color: var(--secondary-text-color);
-      }
+    .spacer {
+      flex: 1;
+    }
 
-      paper-icon-item {
-        cursor: pointer;
-      }
-
-      paper-icon-item[disabled] {
-        cursor: initial;
-      }
-
-      :host([hide-icons]) paper-icon-item {
-        --paper-item-icon-width: 0px;
-      }
-
-      .spacer {
-        flex: 1;
-      }
-
-      .card-content a {
-        color: var(--primary-color);
-      }
-    `;
-  }
+    .card-content a {
+      color: var(--primary-color);
+    }
+  `;
 }
 
 declare global {

cast/src/launcher/layout/hc-connect.ts

@@ -1,19 +1,22 @@
-import "@material/mwc-button";
 import { mdiCastConnected, mdiCast } from "@mdi/js";
-import {
+import type {
   Auth,
   Connection,
+  getAuthOptions,
+} from "home-assistant-js-websocket";
+import {
   createConnection,
   ERR_CANNOT_CONNECT,
   ERR_HASS_HOST_REQUIRED,
   ERR_INVALID_AUTH,
   ERR_INVALID_HTTPS_TO_HTTP,
   getAuth,
-  getAuthOptions,
 } from "home-assistant-js-websocket";
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
 import { customElement, state } from "lit/decorators";
-import { CastManager, getCastManager } from "../../../../src/cast/cast_manager";
+import type { CastManager } from "../../../../src/cast/cast_manager";
+import { getCastManager } from "../../../../src/cast/cast_manager";
 import { castSendShowDemo } from "../../../../src/cast/receiver_messages";
 import {
   loadTokens,
@@ -24,6 +27,7 @@ import "../../../../src/layouts/hass-loading-screen";
 import { registerServiceWorker } from "../../../../src/util/register-service-worker";
 import "./hc-layout";
 import "../../../../src/components/ha-textfield";
+import "../../../../src/components/ha-button";
 
 const seeFAQ = (qid) => html`
   See <a href="./faq.html${qid ? `#${qid}` : ""}">the FAQ</a> for more
@@ -79,11 +83,14 @@ export class HcConnect extends LitElement {
             Unable to connect to ${tokens!.hassUrl}.
           </div>
           <div class="card-actions">
-            <a href="/">
-              <mwc-button> Retry </mwc-button>
-            </a>
+            <ha-button appearance="plain" href="/">Retry</ha-button>
             <div class="spacer"></div>
-            <mwc-button @click=${this._handleLogout}>Log out</mwc-button>
+            <ha-button
+              appearance="plain"
+              variant="danger"
+              @click=${this._handleLogout}
+              >Log out</ha-button
+            >
           </div>
         </hc-layout>
       `;
@@ -124,16 +131,19 @@ export class HcConnect extends LitElement {
             ${this.error ? html` <p class="error">${this.error}</p> ` : ""}
           </div>
           <div class="card-actions">
-            <mwc-button @click=${this._handleDemo}>
+            <ha-button appearance="plain" @click=${this._handleDemo}>
               Show Demo
               <ha-svg-icon
+                slot="end"
                 .path=${this.castManager.castState === "CONNECTED"
                   ? mdiCastConnected
                   : mdiCast}
               ></ha-svg-icon>
-            </mwc-button>
+            </ha-button>
             <div class="spacer"></div>
-            <mwc-button @click=${this._handleConnect}>Authorize</mwc-button>
+            <ha-button appearance="plain" @click=${this._handleConnect}
+              >Authorize</ha-button
+            >
           </div>
         </hc-layout>
       `;
@@ -211,7 +221,7 @@ export class HcConnect extends LitElement {
     let url: URL;
     try {
       url = new URL(value);
-    } catch (err: any) {
+    } catch (_err: any) {
       this.error = "Invalid URL";
       return;
     }
@@ -248,7 +258,7 @@ export class HcConnect extends LitElement {
       this.loading = false;
       return;
     } finally {
-      // Clear url if we have a auth callback in url.
+      // Clear url if we have an auth callback in url.
       if (location.search.includes("auth_callback=1")) {
         history.replaceState(null, "", location.pathname);
       }
@@ -284,41 +294,35 @@ export class HcConnect extends LitElement {
     try {
       saveTokens(null);
       location.reload();
-    } catch (err: any) {
+    } catch (_err: any) {
       alert("Unable to log out!");
     }
   }
 
-  static get styles(): CSSResultGroup {
-    return css`
-      .card-content a {
-        color: var(--primary-color);
-      }
-      .card-actions a {
-        text-decoration: none;
-      }
-      .error {
-        color: red;
-        font-weight: bold;
-      }
+  static styles = css`
+    .card-content a {
+      color: var(--primary-color);
+    }
+    .card-actions a {
+      text-decoration: none;
+    }
+    .error {
+      color: red;
+      font-weight: var(--ha-font-weight-bold);
+    }
 
-      .error a {
-        color: darkred;
-      }
+    .error a {
+      color: darkred;
+    }
 
-      mwc-button ha-svg-icon {
-        margin-left: 8px;
-      }
+    .spacer {
+      flex: 1;
+    }
 
-      .spacer {
-        flex: 1;
-      }
-
-      ha-textfield {
-        width: 100%;
-      }
-    `;
-  }
+    ha-textfield {
+      width: 100%;
+    }
+  `;
 }
 
 declare global {

cast/src/launcher/layout/hc-layout.ts

@@ -1,22 +1,19 @@
-import {
-  Auth,
-  Connection,
-  getUser,
-  HassUser,
-} from "home-assistant-js-websocket";
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import type { Auth, Connection, HassUser } from "home-assistant-js-websocket";
+import { getUser } from "home-assistant-js-websocket";
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
 import "../../../../src/components/ha-card";
 
 @customElement("hc-layout")
 class HcLayout extends LitElement {
-  @property() public subtitle?: string | undefined;
+  @property() public subtitle?: string;
 
-  @property() public auth?: Auth;
+  @property({ attribute: false }) public auth?: Auth;
 
-  @property() public connection?: Connection;
+  @property({ attribute: false }) public connection?: Connection;
 
-  @property() public user?: HassUser;
+  @property({ attribute: false }) public user?: HassUser;
 
   protected render(): TemplateResult {
     return html`
@@ -66,96 +63,95 @@ class HcLayout extends LitElement {
     }
   }
 
-  static get styles(): CSSResultGroup {
-    return css`
+  static styles = css`
+    :host {
+      display: flex;
+      min-height: 100%;
+      align-items: center;
+      justify-content: center;
+      flex-direction: column;
+    }
+
+    ha-card {
+      display: flex;
+      width: 100%;
+      max-width: 500px;
+    }
+
+    .layout {
+      display: flex;
+      flex-direction: column;
+    }
+
+    .card-header {
+      color: var(--ha-card-header-color, var(--primary-text-color));
+      font-family: var(--ha-card-header-font-family, inherit);
+      font-size: var(--ha-card-header-font-size, var(--ha-font-size-2xl));
+      letter-spacing: -0.012em;
+      line-height: var(--ha-line-height-condensed);
+      padding: 24px 16px 16px;
+      display: block;
+      margin: 0;
+    }
+
+    .hero {
+      border-radius: var(--ha-border-radius-sm) var(--ha-border-radius-sm)
+        var(--ha-border-radius-square) var(--ha-border-radius-square);
+    }
+    .subtitle {
+      font-size: var(--ha-font-size-m);
+      color: var(--secondary-text-color);
+      line-height: initial;
+    }
+    .subtitle a {
+      color: var(--secondary-text-color);
+    }
+
+    :host ::slotted(.card-content:not(:first-child)),
+    slot:not(:first-child)::slotted(.card-content) {
+      padding-top: 0px;
+      margin-top: -8px;
+    }
+
+    :host ::slotted(.section-header) {
+      font-weight: var(--ha-font-weight-medium);
+      padding: 4px 16px;
+      text-transform: uppercase;
+    }
+
+    :host ::slotted(.card-content) {
+      padding: 16px;
+      flex: 1;
+    }
+
+    :host ::slotted(.card-actions) {
+      border-top: 1px solid #e8e8e8;
+      padding: 5px 16px;
+      display: flex;
+    }
+
+    img {
+      width: 100%;
+    }
+
+    .footer {
+      text-align: center;
+      font-size: var(--ha-font-size-s);
+      padding: 8px 0 24px;
+      color: var(--secondary-text-color);
+    }
+    .footer a {
+      color: var(--secondary-text-color);
+    }
+
+    @media all and (max-width: 500px) {
       :host {
-        display: flex;
-        min-height: 100%;
-        align-items: center;
-        justify-content: center;
-        flex-direction: column;
+        justify-content: flex-start;
+        min-height: 90%;
+        margin-bottom: 30px;
       }
-
-      ha-card {
-        display: flex;
-        width: 100%;
-        max-width: 500px;
-      }
-
-      .layout {
-        display: flex;
-        flex-direction: column;
-      }
-
-      .card-header {
-        color: var(--ha-card-header-color, --primary-text-color);
-        font-family: var(--ha-card-header-font-family, inherit);
-        font-size: var(--ha-card-header-font-size, 24px);
-        letter-spacing: -0.012em;
-        line-height: 32px;
-        padding: 24px 16px 16px;
-        display: block;
-        margin: 0;
-      }
-
-      .hero {
-        border-radius: 4px 4px 0 0;
-      }
-      .subtitle {
-        font-size: 14px;
-        color: var(--secondary-text-color);
-        line-height: initial;
-      }
-      .subtitle a {
-        color: var(--secondary-text-color);
-      }
-
-      :host ::slotted(.card-content:not(:first-child)),
-      slot:not(:first-child)::slotted(.card-content) {
-        padding-top: 0px;
-        margin-top: -8px;
-      }
-
-      :host ::slotted(.section-header) {
-        font-weight: 500;
-        padding: 4px 16px;
-        text-transform: uppercase;
-      }
-
-      :host ::slotted(.card-content) {
-        padding: 16px;
-        flex: 1;
-      }
-
-      :host ::slotted(.card-actions) {
-        border-top: 1px solid #e8e8e8;
-        padding: 5px 16px;
-        display: flex;
-      }
-
-      img {
-        width: 100%;
-      }
-
-      .footer {
-        text-align: center;
-        font-size: 12px;
-        padding: 8px 0 24px;
-        color: var(--secondary-text-color);
-      }
-      .footer a {
-        color: var(--secondary-text-color);
-      }
-
-      @media all and (max-width: 500px) {
-        :host {
-          justify-content: flex-start;
-          min-height: 90%;
-          margin-bottom: 30px;
-        }
-      }
-    `;
-  }
+    }
+  `;
 }
 
 declare global {

cast/src/receiver/demo/cast-demo-entities.ts

@@ -1,4 +1,5 @@
-import { convertEntities, Entity } from "../../../../src/fake_data/entity";
+import type { Entity } from "../../../../src/fake_data/entity";
+import { convertEntities } from "../../../../src/fake_data/entity";
 
 export const castDemoEntities: () => Entity[] = () =>
   convertEntities({
@@ -74,7 +75,7 @@ export const castDemoEntities: () => Entity[] = () =>
         longitude: 4.8903147,
         radius: 100,
         friendly_name: "Home",
-        icon: "hass:home",
+        icon: "mdi:home",
       },
     },
     "input_number.harmonyvolume": {
@@ -87,7 +88,7 @@ export const castDemoEntities: () => Entity[] = () =>
         step: 1,
         mode: "slider",
         friendly_name: "Volume",
-        icon: "hass:volume-high",
+        icon: "mdi:volume-high",
       },
     },
     "climate.upstairs": {

cast/src/receiver/demo/cast-demo-lovelace.ts

@@ -1,5 +1,5 @@
-import { LovelaceCardConfig } from "../../../../src/data/lovelace/config/card";
-import { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
+import type { LovelaceCardConfig } from "../../../../src/data/lovelace/config/card";
+import type { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
 import { castContext } from "../cast_context";
 
 export const castDemoLovelace: () => LovelaceConfig = () => {
@@ -56,7 +56,7 @@ export const castDemoLovelace: () => LovelaceConfig = () => {
                 type: "weblink",
                 url: "/lovelace/climate",
                 name: "Climate controls",
-                icon: "hass:arrow-right",
+                icon: "mdi:arrow-right",
               },
             ],
           },
@@ -76,7 +76,7 @@ export const castDemoLovelace: () => LovelaceConfig = () => {
                 type: "weblink",
                 url: "/lovelace/overview",
                 name: "Back",
-                icon: "hass:arrow-left",
+                icon: "mdi:arrow-left",
               },
             ],
           },

cast/src/receiver/entrypoint.ts

@@ -1,10 +1,10 @@
 import { framework } from "./cast_framework";
 import { CAST_NS } from "../../../src/cast/const";
-import { HassMessage } from "../../../src/cast/receiver_messages";
+import type { HassMessage } from "../../../src/cast/receiver_messages";
 import "../../../src/resources/custom-card-support";
 import { castContext } from "./cast_context";
 import { HcMain } from "./layout/hc-main";
-import { ReceivedMessage } from "./types";
+import type { ReceivedMessage } from "./types";
 
 const lovelaceController = new HcMain();
 document.body.append(lovelaceController);

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

@@ -1,13 +1,11 @@
 import { html, nothing } from "lit";
 import { customElement, property, state } from "lit/decorators";
 import { mockHistory } from "../../../../demo/src/stubs/history";
-import { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
-import {
-  MockHomeAssistant,
-  provideHass,
-} from "../../../../src/fake_data/provide_hass";
+import type { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
+import type { MockHomeAssistant } from "../../../../src/fake_data/provide_hass";
+import { provideHass } from "../../../../src/fake_data/provide_hass";
 import { HassElement } from "../../../../src/state/hass-element";
-import { HomeAssistant } from "../../../../src/types";
+import type { HomeAssistant } from "../../../../src/types";
 import { castDemoEntities } from "../demo/cast-demo-entities";
 import { castDemoLovelace } from "../demo/cast-demo-lovelace";
 import "./hc-lovelace";

cast/src/receiver/layout/hc-launch-screen.ts

@@ -1,6 +1,7 @@
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
-import { HomeAssistant } from "../../../../src/types";
+import type { HomeAssistant } from "../../../../src/types";
 
 @customElement("hc-launch-screen")
 class HcLaunchScreen extends LitElement {
@@ -12,8 +13,8 @@ class HcLaunchScreen extends LitElement {
     return html`
       <div class="container">
         <img
-          alt="Home Assistant logo on left, Nabu Casa logo on right, and red heart in center"
-          src="https://www.home-assistant.io/images/blog/2018-09-thinking-big/social.png"
+          alt="Nabu Casa logo on left, Home Assistant logo on right, and red heart in center"
+          src="https://cast.home-assistant.io/images/nabu-loves-hass.png"
         />
         <div class="status">
           ${this.hass ? "Connected" : "Not Connected"}
@@ -23,31 +24,29 @@ class HcLaunchScreen extends LitElement {
     `;
   }
 
-  static get styles(): CSSResultGroup {
-    return css`
-      :host {
-        display: block;
-        height: 100vh;
-        padding-top: 64px;
-        background-color: white;
-        font-size: 24px;
-      }
-      .container {
-        display: flex;
-        flex-direction: column;
-        text-align: center;
-      }
-      img {
-        width: 717px;
-        height: 376px;
-        display: block;
-        margin: 0 auto;
-      }
-      .status {
-        padding-right: 54px;
-      }
-    `;
-  }
+  static styles = css`
+    :host {
+      display: block;
+      height: 100vh;
+      background-color: #f2f4f9;
+      font-size: var(--ha-font-size-2xl);
+    }
+    .container {
+      display: flex;
+      flex-direction: column;
+      text-align: center;
+      align-items: center;
+      height: 100%;
+      justify-content: space-evenly;
+    }
+    img {
+      max-width: 80%;
+      object-fit: cover;
+    }
+    .status {
+      color: #1d2126;
+    }
+  `;
 }
 
 declare global {

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

@@ -1,11 +1,14 @@
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
-import { customElement, property, query } from "lit/decorators";
+import { css, html, LitElement, type TemplateResult } from "lit";
+import { customElement, property } from "lit/decorators";
 import { fireEvent } from "../../../../src/common/dom/fire_event";
-import { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
-import { Lovelace } from "../../../../src/panels/lovelace/types";
+import type { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
+import { getPanelTitleFromUrlPath } from "../../../../src/data/panel";
+import type { Lovelace } from "../../../../src/panels/lovelace/types";
 import "../../../../src/panels/lovelace/views/hui-view";
-import { HomeAssistant } from "../../../../src/types";
+import "../../../../src/panels/lovelace/views/hui-view-container";
+import type { HomeAssistant } from "../../../../src/types";
 import "./hc-launch-screen";
+import "../../../../src/panels/lovelace/views/hui-view-background";
 
 (window as any).loadCardHelpers = () =>
   import("../../../../src/panels/lovelace/custom-card-helpers");
@@ -17,11 +20,9 @@ class HcLovelace extends LitElement {
   @property({ attribute: false })
   public lovelaceConfig!: LovelaceConfig;
 
-  @property() public viewPath?: string | number;
+  @property({ attribute: false }) public viewPath?: string | number | null;
 
-  @property() public urlPath: string | null = null;
-
-  @query("hui-view") private _huiView?: HTMLElement;
+  @property({ attribute: false }) public urlPath: string | null = null;
 
   protected render(): TemplateResult {
     const index = this._viewIndex;
@@ -44,13 +45,22 @@ class HcLovelace extends LitElement {
       saveConfig: async () => undefined,
       deleteConfig: async () => undefined,
       setEditMode: () => undefined,
+      showToast: () => undefined,
     };
+
+    const viewConfig = this.lovelaceConfig.views[index];
+    const background = viewConfig.background || this.lovelaceConfig.background;
+
     return html`
-      <hui-view
-        .hass=${this.hass}
-        .lovelace=${lovelace}
-        .index=${index}
-      ></hui-view>
+      <hui-view-container .hass=${this.hass} .theme=${viewConfig.theme}>
+        <hui-view-background .hass=${this.hass} .background=${background}>
+        </hui-view-background>
+        <hui-view
+          .hass=${this.hass}
+          .lovelace=${lovelace}
+          .index=${index}
+        ></hui-view>
+      </hui-view-container>
     `;
   }
 
@@ -61,7 +71,12 @@ class HcLovelace extends LitElement {
       const index = this._viewIndex;
 
       if (index !== undefined) {
-        const dashboardTitle = this.lovelaceConfig.title || this.urlPath;
+        const title = getPanelTitleFromUrlPath(
+          this.hass,
+          this.urlPath || "lovelace"
+        );
+
+        const dashboardTitle = title || this.urlPath;
 
         const viewTitle =
           this.lovelaceConfig.views[index].title ||
@@ -75,24 +90,14 @@ class HcLovelace extends LitElement {
                 }${viewTitle || ""}`
               : undefined,
         });
-
-        const configBackground =
-          this.lovelaceConfig.views[index].background ||
-          this.lovelaceConfig.background;
-
-        if (configBackground) {
-          this._huiView!.style.setProperty(
-            "--lovelace-background",
-            configBackground
-          );
-        } else {
-          this._huiView!.style.removeProperty("--lovelace-background");
-        }
       }
     }
   }
 
   private get _viewIndex() {
+    if (this.viewPath === null) {
+      return 0;
+    }
     const selectedView = this.viewPath;
     const selectedViewInt = parseInt(selectedView as string, 10);
     for (let i = 0; i < this.lovelaceConfig.views.length; i++) {
@@ -106,24 +111,18 @@ class HcLovelace extends LitElement {
     return undefined;
   }
 
-  static get styles(): CSSResultGroup {
-    return css`
-      :host {
-        min-height: 100vh;
-        height: 0;
-        display: flex;
-        flex-direction: column;
-        box-sizing: border-box;
-        background: var(--primary-background-color);
-      }
-      :host > * {
-        flex: 1;
-      }
-      hui-view {
-        background: var(--lovelace-background, var(--primary-background-color));
-      }
-    `;
-  }
+  static styles = css`
+    hui-view-container {
+      display: flex;
+      position: relative;
+      min-height: 100vh;
+      box-sizing: border-box;
+    }
+    hui-view-container > * {
+      flex: 1 1 100%;
+      max-width: 100%;
+    }
+  `;
 }
 
 export interface CastViewChanged {

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

@@ -1,40 +1,40 @@
-import {
-  createConnection,
-  getAuth,
-  UnsubscribeFunc,
-} from "home-assistant-js-websocket";
-import { html, TemplateResult } from "lit";
+import type { UnsubscribeFunc } from "home-assistant-js-websocket";
+import { createConnection, getAuth } from "home-assistant-js-websocket";
+import type { TemplateResult } from "lit";
+import { html } from "lit";
 import { customElement, state } from "lit/decorators";
 import { CAST_NS } from "../../../../src/cast/const";
-import {
+import type {
   ConnectMessage,
   GetStatusMessage,
   HassMessage,
   ShowDemoMessage,
   ShowLovelaceViewMessage,
 } from "../../../../src/cast/receiver_messages";
-import {
-  ReceiverErrorCode,
+import type {
   ReceiverErrorMessage,
   ReceiverStatusMessage,
 } from "../../../../src/cast/sender_messages";
+import { ReceiverErrorCode } from "../../../../src/cast/sender_messages";
 import { atLeastVersion } from "../../../../src/common/config/version";
 import { isNavigationClick } from "../../../../src/common/dom/is-navigation-click";
 import {
   getLegacyLovelaceCollection,
   getLovelaceCollection,
 } from "../../../../src/data/lovelace";
-import {
-  isStrategyDashboard,
+import type {
   LegacyLovelaceConfig,
   LovelaceConfig,
   LovelaceDashboardStrategyConfig,
 } from "../../../../src/data/lovelace/config/types";
+import { isStrategyDashboard } from "../../../../src/data/lovelace/config/types";
 import { fetchResources } from "../../../../src/data/lovelace/resource";
 import { loadLovelaceResources } from "../../../../src/panels/lovelace/common/load-resources";
 import { HassElement } from "../../../../src/state/hass-element";
 import { castContext } from "../cast_context";
 import "./hc-launch-screen";
+import { getPanelTitleFromUrlPath } from "../../../../src/data/panel";
+import { checkLovelaceConfig } from "../../../../src/panels/lovelace/common/check-lovelace-config";
 
 const DEFAULT_CONFIG: LovelaceDashboardStrategyConfig = {
   strategy: {
@@ -51,10 +51,10 @@ export class HcMain extends HassElement {
 
   @state() private _lovelacePath: string | number | null = null;
 
-  @state() private _error?: string;
-
   @state() private _urlPath?: string | null;
 
+  @state() private _error?: string;
+
   private _hassUUID?: string;
 
   private _unsubLovelace?: UnsubscribeFunc;
@@ -81,7 +81,7 @@ export class HcMain extends HassElement {
 
     if (
       !this._lovelaceConfig ||
-      this._lovelacePath === null ||
+      this._urlPath === undefined ||
       // Guard against part of HA not being loaded yet.
       !this.hass ||
       !this.hass.states ||
@@ -99,8 +99,8 @@ export class HcMain extends HassElement {
       <hc-lovelace
         .hass=${this.hass}
         .lovelaceConfig=${this._lovelaceConfig}
-        .viewPath=${this._lovelacePath}
         .urlPath=${this._urlPath}
+        .viewPath=${this._lovelacePath}
         @config-refresh=${this._generateDefaultLovelaceConfig}
       ></hc-lovelace>
     `;
@@ -109,7 +109,7 @@ export class HcMain extends HassElement {
   protected firstUpdated(changedProps) {
     super.firstUpdated(changedProps);
     import("./hc-lovelace");
-    import("../../../../src/resources/ha-style");
+    import("../../../../src/resources/append-ha-style");
 
     window.addEventListener("location-changed", () => {
       const panelPath = `/${this._urlPath || "lovelace"}/`;
@@ -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);
       }
     }
   }
@@ -205,7 +205,6 @@ export class HcMain extends HassElement {
           expires_in: 0,
         }),
       });
-      this._hassUUID = msg.hassUUID;
     } catch (err: any) {
       const errorMessage = this._getErrorMessage(err);
       this._error = errorMessage;
@@ -225,6 +224,17 @@ export class HcMain extends HassElement {
       this.hass.connection.close();
     }
     this.initializeHass(auth, connection);
+    if (this._hassUUID !== msg.hassUUID) {
+      this._hassUUID = msg.hassUUID;
+      this._lovelaceConfig = undefined;
+      this._urlPath = undefined;
+      this._lovelacePath = null;
+      if (this._unsubLovelace) {
+        this._unsubLovelace();
+        this._unsubLovelace = undefined;
+      }
+      resourcesLoaded = false;
+    }
     this._error = undefined;
     this._sendStatus();
   }
@@ -233,7 +243,7 @@ export class HcMain extends HassElement {
     this._showDemo = false;
     // We should not get this command before we are connected.
     // Means a client got out of sync. Let's send status to them.
-    if (!this.hass) {
+    if (!this.hass?.connected) {
       this._sendStatus(msg.senderId!);
       this._error = "Cannot show Lovelace because we're not connected.";
       this._sendError(
@@ -260,7 +270,7 @@ export class HcMain extends HassElement {
     }
 
     this._error = undefined;
-    if (msg.urlPath === "lovelace") {
+    if (msg.urlPath === "lovelace" || msg.urlPath === undefined) {
       msg.urlPath = null;
     }
     this._lovelacePath = msg.viewPath;
@@ -275,7 +285,7 @@ export class HcMain extends HassElement {
         ],
       };
       this._urlPath = "energy";
-      this._lovelacePath = 0;
+      this._lovelacePath = null;
       this._sendStatus();
       return;
     }
@@ -284,6 +294,7 @@ export class HcMain extends HassElement {
       this._lovelaceConfig = undefined;
       if (this._unsubLovelace) {
         this._unsubLovelace();
+        this._unsubLovelace = undefined;
       }
       const llColl = atLeastVersion(this.hass.connection.haVersion, 0, 107)
         ? getLovelaceCollection(this.hass.connection, msg.urlPath)
@@ -298,7 +309,7 @@ export class HcMain extends HassElement {
               "../../../../src/panels/lovelace/strategies/get-strategy"
             );
             const config = await generateLovelaceDashboardStrategy(
-              rawConfig.strategy,
+              rawConfig,
               this.hass!
             );
             this._handleNewLovelaceConfig(config);
@@ -340,16 +351,19 @@ export class HcMain extends HassElement {
       "../../../../src/panels/lovelace/strategies/get-strategy"
     );
     this._handleNewLovelaceConfig(
-      await generateLovelaceDashboardStrategy(
-        DEFAULT_CONFIG.strategy,
-        this.hass!
-      )
+      await generateLovelaceDashboardStrategy(DEFAULT_CONFIG, this.hass!)
     );
   }
 
   private _handleNewLovelaceConfig(lovelaceConfig: LovelaceConfig) {
-    castContext.setApplicationState(lovelaceConfig.title || "");
-    this._lovelaceConfig = lovelaceConfig;
+    const title = getPanelTitleFromUrlPath(
+      this.hass!,
+      this._urlPath || "lovelace"
+    );
+    castContext.setApplicationState(title || "");
+    this._lovelaceConfig = checkLovelaceConfig(
+      lovelaceConfig
+    ) as LovelaceConfig;
   }
 
   private _handleShowDemo(_msg: ShowDemoMessage) {
@@ -377,7 +391,7 @@ export class HcMain extends HassElement {
     }
   }
 
-  private sendMessage(senderId: string, response: any) {
+  private _sendMessage(senderId: string, response: any) {
     castContext.sendCustomMessage(CAST_NS, senderId, response);
   }
 }

cast/webpack.config.js

@@ -1,8 +0,0 @@
-import webpack from "../build-scripts/webpack.cjs";
-import env from "../build-scripts/env.cjs";
-
-export default webpack.createCastConfig({
-  isProdBuild: env.isProdBuild(),
-  isStatsBuild: env.isStatsBuild(),
-  latestBuild: true,
-});

demo/public/manifest.json

@@ -75,5 +75,5 @@
   "name": "Home Assistant Demo",
   "short_name": "HA Demo",
   "start_url": "/?homescreen=1",
-  "theme_color": "#03A9F4"
+  "theme_color": "#009ac7"
 }