Add inital form data to hui-form-editor

Update dependency marked to v11.0.1 (#19007 )
Don't leave empty arrays in the service control target (#18986 )
2026-05-18 23:27:09 +00:00 · 2023-12-12 09:58:50 +01:00 · 2023-12-11 20:56:46 -05:00 · 2023-12-11 11:19:28 +01:00 · 2023-12-11 08:06:47 +01:00 · 2023-12-11 08:05:40 +01:00
2372 changed files with 245426 additions and 218970 deletions
@@ -0,0 +1,39 @@
+[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
+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.
+unreleased versions
+last 7 years
+> 0.05% and supports websockets
@@ -0,0 +1,7 @@
+# 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
+
+ENV \
+  DEBIAN_FRONTEND=noninteractive \
+  DEVCONTAINER=true \
+  PATH=$PATH:./node_modules/.bin
@@ -0,0 +1,43 @@
+{
+  "name": "Home Assistant Frontend",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": ".."
+  },
+  "appPort": "8124:8123",
+  "postStartCommand": "script/bootstrap",
+  "containerEnv": {
+    "WORKSPACE_DIRECTORY": "${containerWorkspaceFolder}"
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "dbaeumer.vscode-eslint",
+        "esbenp.prettier-vscode",
+        "runem.lit-plugin",
+        "github.vscode-pull-request-github",
+        "eamodio.gitlens"
+      ],
+      "settings": {
+        "files.eol": "\n",
+        "editor.tabSize": 2,
+        "editor.formatOnPaste": false,
+        "editor.formatOnSave": true,
+        "editor.formatOnType": true,
+        "editor.renderWhitespace": "boundary",
+        "editor.rulers": [80],
+        "[typescript]": {
+          "editor.defaultFormatter": "esbenp.prettier-vscode"
+        },
+        "[javascript]": {
+          "editor.defaultFormatter": "esbenp.prettier-vscode"
+        },
+        "files.trimTrailingWhitespace": true,
+        "terminal.integrated.shell.linux": "/usr/bin/zsh",
+        "gitlens.showWelcomeOnInstall": false,
+        "gitlens.showWhatsNewAfterUpgrades": false,
+        "workbench.startupEditor": "none"
+      }
+    }
+  }
+}
@@ -1,11 +1,12 @@
 {
  "extends": [
+    "airbnb-base",
    "airbnb-typescript/base",
    "plugin:@typescript-eslint/recommended",
    "plugin:wc/recommended",
-    "plugin:lit/recommended",
-    "prettier",
-    "prettier/@typescript-eslint"
+    "plugin:lit/all",
+    "plugin:lit-a11y/recommended",
+    "prettier"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
@@ -19,7 +20,7 @@
  "settings": {
    "import/resolver": {
      "webpack": {
-        "config": "./webpack.config.js"
+        "config": "./webpack.config.cjs"
      }
    }
  },
@@ -29,60 +30,101 @@
    "__BUILD__": false,
    "__VERSION__": false,
    "__STATIC_PATH__": false,
-    "Polymer": true,
-    "webkitSpeechRecognition": false,
-    "ResizeObserver": false
+    "__SUPERVISOR__": false,
+    "Polymer": true
  },
  "env": {
    "browser": true,
    "es6": true
  },
  "rules": {
-    "class-methods-use-this": 0,
-    "new-cap": 0,
-    "prefer-template": 0,
-    "object-shorthand": 0,
-    "func-names": 0,
-    "prefer-arrow-callback": 0,
-    "no-underscore-dangle": 0,
-    "strict": 0,
-    "prefer-spread": 0,
-    "no-plusplus": 0,
-    "no-bitwise": 2,
-    "comma-dangle": 0,
-    "vars-on-top": 0,
-    "no-continue": 0,
-    "no-param-reassign": 0,
-    "no-multi-assign": 0,
-    "no-console": 2,
-    "radix": 0,
-    "no-alert": 0,
-    "no-return-await": 0,
-    "no-nested-ternary": 0,
-    "prefer-destructuring": 0,
+    "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": 0,
-    "import/order": 0,
-    "import/prefer-default-export": 0,
-    "import/no-unresolved": 0,
-    "import/no-cycle": 0,
+    "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": [
-      2,
+      "error",
      "ignorePackages",
-      { "ts": "never", "js": "never" }
+      {
+        "ts": "never",
+        "js": "never"
+      }
    ],
    "no-restricted-syntax": ["error", "LabeledStatement", "WithStatement"],
-    "object-curly-newline": 0,
-    "default-case": 0,
-    "wc/no-self-class": 0,
-    "@typescript-eslint/camelcase": 0,
-    "@typescript-eslint/ban-ts-ignore": 0,
-    "@typescript-eslint/no-use-before-define": 0,
-    "@typescript-eslint/no-non-null-assertion": 0,
-    "@typescript-eslint/no-explicit-any": 0,
-    "@typescript-eslint/no-unused-vars": 0,
-    "@typescript-eslint/explicit-function-return-type": 0
+    "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", "import", "lit", "prettier", "@typescript-eslint"],
+  "plugins": ["disable", "unused-imports"],
  "processor": "disable/disable"
 }
@@ -51,7 +51,7 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w
 <!--
  Provide details about the versions you are using, which helps us reproducing
  and finding the issue quicker. Version information is found in the
-  Home Assistant frontend: Configuration -> Info.
+  Home Assistant frontend: Settings -> About.

  Browser version and operating system is important! Please try to replicate
  your issue in a different browser and be sure to include your findings.
@@ -74,12 +74,12 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w

 ```

-## Problem-relevant configuration
+## Problem-relevant frontend configuration

 <!--
-  An example configuration that caused the problem for you. Fill this out even
-  if it seems unimportant to you. Please be sure to remove personal information
-  like passwords, private URLs and other credentials.
+  An example configuration that caused the problem for you, e.g. the YAML configuration
+  of the used cards. Fill this out even if it seems unimportant to you. Please be sure
+  to remove personal information like passwords, private URLs and other credentials.
 -->

 ```yaml
@@ -89,7 +89,7 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w
 ## Javascript errors shown in your browser console/inspector

 <!--
-  If you come across any javascript or other error logs, e.g., in your browser
+  If you come across any Javascript or other error logs, e.g. in your browser
  console/inspector please provide them.
 -->

@@ -1,26 +0,0 @@
---
-name: Request a feature for the UI, Frontend or Lovelace
-about: Request an new feature for the Home Assistant frontend.
-labels: feature request
---
-
-<!--
-  DO NOT DELETE ANY TEXT from this template!
-  Otherwise, your request may be closed without comment.
-->
-
-## The request
-
-<!--
-  Describe to our maintainers, the feature you would like to be added.
-  Please be clear and concise and, if possible, provide a screenshot or mockup.
-->
-
-## The alternatives
-
-<!--
-  Are you currently using, or have you considered alternatives?
-  If so, could you please describe those?
-->
-
-## Additional information
@@ -0,0 +1,121 @@
+name: Report a bug with the UI / Dashboards
+description: Report an issue related to the Home Assistant frontend.
+labels: bug
+body:
+  - type: markdown
+    attributes:
+      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.
+
+        **Please do not report issues for custom cards.**
+
+        [fr]: https://github.com/home-assistant/frontend/discussions
+        [releases]: https://github.com/home-assistant/home-assistant/releases
+  - type: checkboxes
+    attributes:
+      label: Checklist
+      description: Please verify that you've followed these steps
+      options:
+        - label: I have updated to the latest available Home Assistant version.
+          required: true
+        - label: I have cleared the cache of my browser.
+          required: true
+        - label: I have tried a different browser to see if it is related to my browser.
+          required: true
+  - type: markdown
+    attributes:
+      value: |
+        ## The problem
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Describe the issue you are experiencing
+      description: Provide a clear and concise description of what the bug is.
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Describe the behavior you expected
+      description: Describe what you expected to happen or it should look/behave.
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Steps to reproduce the issue
+      description: |
+        Please tell us exactly how to reproduce your issue.
+        Provide clear and concise step by step instructions and add code snippets if needed.
+      value: |
+        1.
+        2.
+        3.
+        ...
+  - type: markdown
+    attributes:
+      value: |
+        ## Environment
+  - type: input
+    validations:
+      required: true
+    attributes:
+      label: What version of Home Assistant Core has the issue?
+      placeholder: core-
+      description: >
+        Can be found in: [Settings -> About](https://my.home-assistant.io/redirect/info/).
+  - type: input
+    attributes:
+      label: What was the last working version of Home Assistant Core?
+      placeholder: core-
+      description: >
+        If known, otherwise leave blank.
+  - type: input
+    attributes:
+      label: In which browser are you experiencing the issue with?
+      placeholder: Google Chrome 88.0.4324.150
+      description: >
+        Provide the full name and don't forget to add the version!
+  - type: input
+    attributes:
+      label: Which operating system are you using to run this browser?
+      placeholder: macOS Big Sur (1.11)
+      description: >
+        Don't forget to add the version!
+  - type: markdown
+    attributes:
+      value: |
+        # Details
+
+  - type: textarea
+    attributes:
+      label: State of relevant entities
+      description: >
+        If your issue is about how an entity is shown in the UI, please add the
+        state and attributes for all situations. You can find this information
+        at Developer Tools -> States.
+      render: txt
+  - type: textarea
+    attributes:
+      label: Problem-relevant frontend configuration
+      description: >
+        An example configuration that caused the problem for you, e.g., the YAML
+        configuration of the used cards. Fill this out even if it seems
+        unimportant to you. Please be sure to remove personal information like
+        passwords, private URLs and other credentials.
+      render: yaml
+  - type: textarea
+    attributes:
+      label: Javascript errors shown in your browser console/inspector
+      description: >
+        If you come across any Javascript or other error logs, e.g., in your
+        browser console/inspector please provide them.
+      render: txt
+  - type: textarea
+    attributes:
+      label: Additional information
+      description: >
+        If you have any additional information for us, use the field below.
+        Please note, you can attach screenshots or screen recordings here, by
+        dragging and dropping files in the field below.
@@ -1,14 +1,17 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Report a bug that is NOT related to the UI, Frontend or Lovelace
+  - 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.
+  - 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 with the backend repository.
+    about: This is the issue tracker for our frontend. Please report other issues in the backend ("core") repository.
  - name: Report incorrect or missing information on our website
    url: https://github.com/home-assistant/home-assistant.io/issues
    about: Our documentation has its own issue tracker. Please report issues with the website there.
  - name: I have a question or need support
    url: https://www.home-assistant.io/help
-    about: We use GitHub for tracking bugs, check our website for resources on getting help.
+    about: We use GitHub for tracking bugs. Check our website for resources on getting help.
  - name: I'm unsure where to go
    url: https://www.home-assistant.io/join-chat
    about: If you are unsure where to go, then joining our chat is recommended; Just ask!
@@ -2,9 +2,7 @@
  You are amazing! Thanks for contributing to our project!
  Please, DO NOT DELETE ANY TEXT from this template! (unless instructed).
 -->
-
 ## Breaking change
-
 <!--
  If your PR contains a breaking change for existing users, it is important
  to tell them what breaks, how to make it work again and why we did this.
@@ -13,17 +11,17 @@
  Note: Remove this section if this PR is NOT a breaking change.
 -->

-## Proposed change

+## Proposed change
 <!--
  Describe the big picture of your changes here to communicate to the
  maintainers why we should accept this pull request. If it fixes a bug
-  or resolves a feature request, be sure to link to that issue in the
-  additional information section.
+  or resolves a feature request, be sure to link to that issue or discussion
+  in the additional information section.
 -->

-## Type of change

+## Type of change
 <!--
  What type of change does your PR introduce to the Home Assistant frontend?
  NOTE: Please, check only 1! box!
@@ -38,7 +36,6 @@
 - [ ] Code quality improvements to existing code or addition of tests

 ## Example configuration
-
 <!--
  Supplying a configuration snippet, makes it easier for a maintainer to test
  your PR.
@@ -49,18 +46,16 @@
 ```

 ## Additional information
-
 <!--
  Details are important, and help maintainers processing your PR.
  Please be sure to fill out additional details, if applicable.
 -->

 - This PR fixes or closes issue: fixes #
- This PR is related to issue:
+- This PR is related to issue or discussion:
 - Link to documentation pull request:

 ## Checklist
-
 <!--
  Put an `x` in the boxes that apply. You can also fill these out after
  creating the PR. If you're unsure about any of them, don't hesitate to ask.
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: weekly
+      time: "06:00"
+    open-pull-requests-limit: 10
+    labels:
+      - Dependencies
+      - GitHub Actions
@@ -0,0 +1,31 @@
+Build:
+  - build-scripts/**
+  - .browserslistrc
+  - gulpfile.js
+
+Cast:
+  - cast/src/**
+  - src/cast/**
+
+Demo:
+  - demo/src/**
+  - src/fake_data/**
+
+Design:
+  - gallery/src/**
+  - src/fake_data/**
+
+Dependencies:
+  - package.json
+  - renovate.json
+  - yarn.lock
+  - .yarn/**
+  - .yarnrc.yml
+  - .nvmrc
+
+GitHub Actions:
+  - .github/workflows/**
+  - .github/*.yml
+
+Supervisor:
+  - hassio/src/**
@@ -1,27 +0,0 @@
-# Configuration for Lock Threads - https://github.com/dessant/lock-threads
-
-# Number of days of inactivity before a closed issue or pull request is locked
-daysUntilLock: 1
-
-# Skip issues and pull requests created before a given timestamp. Timestamp must
-# follow ISO 8601 (`YYYY-MM-DD`). Set to `false` to disable
-skipCreatedBefore: 2020-01-01
-
-# Issues and pull requests with these labels will be ignored. Set to `[]` to disable
-exemptLabels: []
-
-# Label to add before locking, such as `outdated`. Set to `false` to disable
-lockLabel: false
-
-# Comment to post before locking. Set to `false` to disable
-lockComment: false
-
-# Assign `resolved` as the reason for locking. Set to `false` to disable
-setLockReason: false
-
-# Limit to only `issues` or `pulls`
-only: pulls
-
-# Optionally, specify configuration settings just for `issues` or `pulls`
-issues:
-  daysUntilLock: 30
@@ -1,3 +1,8 @@
+categories:
+  - title: "Dependency updates"
+    collapse-after: 3
+    labels:
+      - "Dependencies"
 template: |
  ## What's Changed

@@ -1,56 +0,0 @@
-# Configuration for probot-stale - https://github.com/probot/stale
-
-# Number of days of inactivity before an Issue or Pull Request becomes stale
-daysUntilStale: 90
-
-# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
-# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
-daysUntilClose: 7
-
-# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
-onlyLabels: []
-
-# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
-exemptLabels:
-  - feature request
-  - Help wanted
-  - to do
-
-# Set to true to ignore issues in a project (defaults to false)
-exemptProjects: true
-
-# Set to true to ignore issues in a milestone (defaults to false)
-exemptMilestones: true
-
-# Set to true to ignore issues with an assignee (defaults to false)
-exemptAssignees: false
-
-# Label to use when marking as stale
-staleLabel: stale
-
-# Comment to post when marking as stale. Set to `false` to disable
-markComment: >
-  There hasn't been any activity on this issue recently. Due to the high number
-  of incoming GitHub notifications, we have to clean some of the old issues,
-  as many of them have already been resolved with the latest updates.
-
-  Please make sure to update to the latest Home Assistant version and check
-  if that solves the issue. Let us know if that works for you by adding a
-  comment 👍
-
-  This issue now has been marked as stale and will be closed if no further
-  activity occurs. Thank you for your contributions.
-
-# Comment to post when removing the stale label.
-# unmarkComment: >
-#   Your comment here.
-
-# Comment to post when closing a stale Issue or Pull Request.
-# closeComment: >
-#   Your comment here.
-
-# Limit the number of actions per hour, from 1-30. Default is 30
-limitPerRun: 30
-
-# Limit to only `issues` or `pulls`
-only: issues
@@ -0,0 +1,85 @@
+name: Cast deployment
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+  push:
+    branches:
+      - master
+
+env:
+  NODE_OPTIONS: --max_old_space_size=6144
+
+jobs:
+  deploy_dev:
+    runs-on: ubuntu-latest
+    name: Deploy Development
+    if: github.event_name != 'push'
+    environment:
+      name: Cast Development
+      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
+        with:
+          ref: dev
+
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build Cast
+        run: ./node_modules/.bin/gulp build-cast
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Deploy to Netlify
+        id: deploy
+        uses: netlify/actions/cli@master
+        with:
+          args: deploy --dir=cast/dist --alias dev
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_CAST_SITE_ID }}
+
+  deploy_master:
+    runs-on: ubuntu-latest
+    name: Deploy Production
+    if: github.event_name == 'push'
+    environment:
+      name: Cast Production
+      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
+        with:
+          ref: master
+
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build Cast
+        run: ./node_modules/.bin/gulp build-cast
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Deploy to Netlify
+        id: deploy
+        uses: netlify/actions/cli@master
+        with:
+          args: deploy --dir=cast/dist --prod
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_CAST_SITE_ID }}
@@ -10,114 +10,108 @@ on:
      - dev
      - master

+env:
+  NODE_OPTIONS: --max_old_space_size=6144
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
  lint:
+    name: Lint and check format
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v2
-      - name: Setting up Node.js
-        uses: actions/setup-node@v1
+        uses: actions/checkout@v4.1.1
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
        with:
-          node-version: 12.x
-      - name: Get yarn cache path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-      - name: Fetching Yarn cache
-        uses: actions/cache@v1
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
+          node-version-file: ".nvmrc"
+          cache: yarn
      - name: Install dependencies
-        run: yarn install
-        env:
-          CI: true
+        run: yarn install --immutable
+      - name: Check for duplicate dependencies
+        run: yarn dedupe --check
      - name: Build resources
-        run: ./node_modules/.bin/gulp gen-icons-json build-translations gather-gallery-demos
+        run: ./node_modules/.bin/gulp gen-icons-json build-translations build-locale-data gather-gallery-pages
+      - name: Setup lint cache
+        uses: actions/cache@v3.3.2
+        with:
+          path: |
+            node_modules/.cache/prettier
+            node_modules/.cache/eslint
+          key: lint-${{ github.sha }}
+          restore-keys: lint-
      - name: Run eslint
-        run: ./node_modules/.bin/eslint '{**/src,src}/**/*.{js,ts,html}' --ignore-path .gitignore
+        run: yarn run lint:eslint --quiet
      - name: Run tsc
-        run: ./node_modules/.bin/tsc
+        run: yarn run lint:types
+      - name: Run prettier
+        run: yarn run lint:prettier
  test:
+    name: Run tests
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v2
-      - name: Setting up Node.js
-        uses: actions/setup-node@v1
+        uses: actions/checkout@v4.1.1
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
        with:
-          node-version: 12.x
-      - name: Get yarn cache path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-      - name: Fetching Yarn cache
-        uses: actions/cache@v1
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
+          node-version-file: ".nvmrc"
+          cache: yarn
      - name: Install dependencies
-        run: yarn install
-        env:
-          CI: true
-      - name: Run Mocha
-        run: npm run mocha
+        run: yarn install --immutable
+      - name: Build resources
+        run: ./node_modules/.bin/gulp build-translations build-locale-data
+      - name: Run Tests
+        run: yarn run test
  build:
-    runs-on: ubuntu-latest
+    name: Build frontend
    needs: [lint, test]
+    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v2
-      - name: Setting up Node.js
-        uses: actions/setup-node@v1
+        uses: actions/checkout@v4.1.1
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
        with:
-          node-version: 12.x
-      - name: Get yarn cache path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-      - name: Fetching Yarn cache
-        uses: actions/cache@v1
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
+          node-version-file: ".nvmrc"
+          cache: yarn
      - name: Install dependencies
-        run: yarn install
-        env:
-          CI: true
+        run: yarn install --immutable
      - name: Build Application
        run: ./node_modules/.bin/gulp build-app
        env:
          IS_TEST: "true"
+      - name: Upload bundle stats
+        uses: actions/upload-artifact@v3.1.3
+        with:
+          name: frontend-bundle-stats
+          path: build/stats/*.json
+          if-no-files-found: error
  supervisor:
-    runs-on: ubuntu-latest
+    name: Build supervisor
    needs: [lint, test]
+    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v2
-      - name: Setting up Node.js
-        uses: actions/setup-node@v1
+        uses: actions/checkout@v4.1.1
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
        with:
-          node-version: 12.x
-      - name: Get yarn cache path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-      - name: Fetching Yarn cache
-        uses: actions/cache@v1
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
+          node-version-file: ".nvmrc"
+          cache: yarn
      - name: Install dependencies
-        run: yarn install
-        env:
-          CI: true
+        run: yarn install --immutable
      - name: Build Application
        run: ./node_modules/.bin/gulp build-hassio
        env:
          IS_TEST: "true"
+      - name: Upload bundle stats
+        uses: actions/upload-artifact@v3.1.3
+        with:
+          name: supervisor-bundle-stats
+          path: build/stats/*.json
+          if-no-files-found: error
@@ -17,44 +17,44 @@ jobs:
      matrix:
        # Override automatic language detection by changing the below list
        # Supported options are ['csharp', 'cpp', 'go', 'java', 'javascript', 'python']
-        language: ['javascript']
+        language: ["javascript"]
        # Learn more...
        # https://docs.github.com/en/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#overriding-automatic-language-detection

    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-      with:
-        # We must fetch at least the immediate parents so that if this is
-        # a pull request then we can checkout the head.
-        fetch-depth: 2
+      - name: Checkout repository
+        uses: actions/checkout@v4.1.1
+        with:
+          # We must fetch at least the immediate parents so that if this is
+          # a pull request then we can checkout the head.
+          fetch-depth: 2

-    # If this run was triggered by a pull request event, then checkout
-    # the head of the pull request instead of the merge commit.
-    - run: git checkout HEAD^2
-      if: ${{ github.event_name == 'pull_request' }}
+      # If this run was triggered by a pull request event, then checkout
+      # the head of the pull request instead of the merge commit.
+      - run: git checkout HEAD^2
+        if: ${{ github.event_name == 'pull_request' }}

-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
-      with:
-        languages: ${{ matrix.language }}
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        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@v1
+      # 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@v2

-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 https://git.io/JvXDl
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 https://git.io/JvXDl

-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
+      # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+      #    and modify them (or add more) to build your code if your project
+      #    uses a compiled language

-    #- run: |
-    #   make bootstrap
-    #   make release
+      #- run: |
+      #   make bootstrap
+      #   make release

-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
@@ -1,39 +0,0 @@
-name: Demo
-
-on:
-  push:
-    branches:
-      - dev
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out files from GitHub
-        uses: actions/checkout@v2
-      - name: Setting up Node.js
-        uses: actions/setup-node@v1
-        with:
-          node-version: 12.x
-      - name: Get yarn cache path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-      - name: Fetching Yarn cache
-        uses: actions/cache@v1
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
-      - name: Install dependencies
-        run: yarn install
-        env:
-          CI: true
-      - name: Build Demo
-        run: ./node_modules/.bin/gulp build-demo
-      - name: Deploy to Netlify
-        uses: netlify/actions/cli@master
-        env:
-          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
-          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_DEMO_DEV_SITE_ID }}
-        with:
-          args: deploy --dir=demo/dist --prod
@@ -0,0 +1,86 @@
+name: Demo deployment
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+  push:
+    branches:
+      - dev
+      - master
+
+env:
+  NODE_OPTIONS: --max_old_space_size=6144
+
+jobs:
+  deploy_dev:
+    runs-on: ubuntu-latest
+    name: Demo Development
+    if: github.event_name != 'push' || github.ref_name != 'master'
+    environment:
+      name: Demo Development
+      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
+        with:
+          ref: dev
+
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build Demo
+        run: ./node_modules/.bin/gulp build-demo
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Deploy to Netlify
+        id: deploy
+        uses: netlify/actions/cli@master
+        with:
+          args: deploy --dir=demo/dist --prod
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_DEMO_DEV_SITE_ID }}
+
+  deploy_master:
+    runs-on: ubuntu-latest
+    name: Demo Production
+    if: github.event_name == 'push' && github.ref_name == 'master'
+    environment:
+      name: Demo Production
+      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
+        with:
+          ref: master
+
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build Demo
+        run: ./node_modules/.bin/gulp build-demo
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Deploy to Netlify
+        id: deploy
+        uses: netlify/actions/cli@master
+        with:
+          args: deploy --dir=demo/dist --prod
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_DEMO_SITE_ID }}
@@ -0,0 +1,42 @@
+name: Design deployment
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+
+env:
+  NODE_OPTIONS: --max_old_space_size=6144
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment:
+      name: Design
+      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
+
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build Gallery
+        run: ./node_modules/.bin/gulp build-gallery
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Deploy to Netlify
+        id: deploy
+        uses: netlify/actions/cli@master
+        with:
+          args: deploy --dir=gallery/dist --prod
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_GALLERY_SITE_ID }}
@@ -0,0 +1,51 @@
+name: Design preview
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - labeled
+    branches:
+      - dev
+
+env:
+  NODE_OPTIONS: --max_old_space_size=6144
+
+jobs:
+  preview:
+    runs-on: ubuntu-latest
+    # Skip running on forks since it won't have access to secrets
+    # Skip running PRs without 'needs design preview' label
+    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
+
+      - name: Setup Node
+        uses: actions/setup-node@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build Gallery
+        run: ./node_modules/.bin/gulp build-gallery
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Deploy preview to Netlify
+        id: deploy
+        uses: netlify/actions/cli@master
+        with:
+          args: deploy --dir=gallery/dist --alias "deploy-preview-${{ github.event.number }}"
+        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"
@@ -0,0 +1,15 @@
+name: "Pull Request Labeler"
+
+on: pull_request_target
+
+jobs:
+  triage:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Apply labels
+        uses: actions/labeler@v5.0.0
+        with:
+          sync-labels: true
@@ -0,0 +1,21 @@
+name: Lock
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 * * * *"
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v5.0.1
+        with:
+          github-token: ${{ github.token }}
+          process-only: "issues, prs"
+          issue-lock-inactive-days: "30"
+          issue-exclude-created-before: "2020-10-01T00:00:00Z"
+          issue-lock-reason: ""
+          pr-lock-inactive-days: "1"
+          pr-exclude-created-before: "2020-11-01T00:00:00Z"
+          pr-lock-reason: ""
@@ -0,0 +1,71 @@
+name: Nightly
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 1 * * *"
+
+env:
+  PYTHON_VERSION: "3.11"
+  NODE_OPTIONS: --max_old_space_size=6144
+
+permissions:
+  actions: none
+
+jobs:
+  nightly:
+    name: Nightly
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.1.1
+
+      - 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@v4.0.0
+        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: Bump version
+        run: script/version_bump.cjs nightly
+
+      - name: Build nightly Python wheels
+        run: |
+          pip install build
+          yarn install
+          export SKIP_FETCH_NIGHTLY_TRANSLATIONS=1
+          script/build_frontend
+          rm -rf dist home_assistant_frontend.egg-info
+          python3 -m build
+
+      - name: Archive translations
+        run: tar -czvf translations.tar.gz translations
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v3.1.3
+        with:
+          name: wheels
+          path: dist/home_assistant_frontend*.whl
+          if-no-files-found: error
+
+      - name: Upload translations
+        uses: actions/upload-artifact@v3.1.3
+        with:
+          name: translations
+          path: translations.tar.gz
+          if-no-files-found: error
@@ -0,0 +1,25 @@
+name: RelativeCI
+
+on:
+  workflow_run:
+    workflows: [CI]
+    types:
+      - completed
+
+jobs:
+  upload:
+    name: Upload stats
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    strategy:
+      matrix:
+        bundle: [frontend, supervisor]
+        build: [modern, legacy]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send bundle stats and build information to RelativeCI
+        uses: relative-ci/agent-action@v2.1.10
+        with:
+          key: ${{ secrets[format('RELATIVE_CI_KEY_{0}_{1}', matrix.bundle, matrix.build)] }}
+          token: ${{ github.token }}
+          artifactName: ${{ format('{0}-bundle-stats', matrix.bundle) }}
+          webpackStatsFile: ${{ format('{0}-{1}.json', matrix.bundle, matrix.build) }}
@@ -5,8 +5,17 @@ on:
    branches:
      - dev

+permissions:
+  contents: read
+
 jobs:
  update_release_draft:
+    permissions:
+      # write permission for contents is required to create a github release
+      contents: write
+      # write permission for pull-requests is required for autolabeler
+      # otherwise, read permission is required at least
+      pull-requests: read
    runs-on: ubuntu-latest
    steps:
      - uses: release-drafter/release-drafter@v5
@@ -0,0 +1,83 @@
+name: Release
+
+on:
+  release:
+    types:
+      - published
+
+env:
+  PYTHON_VERSION: "3.11"
+  NODE_OPTIONS: --max_old_space_size=6144
+
+# Set default workflow permissions
+# All scopes not mentioned here are set to no access
+# https://docs.github.com/en/actions/security-guides/automatic-token-authentication#permissions-for-the-github_token
+permissions:
+  actions: none
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Required to upload release assets
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.1.1
+
+      - 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@v4.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Download Translations
+        run: ./script/translations_download
+        env:
+          LOKALISE_TOKEN: ${{ secrets.LOKALISE_TOKEN }}
+      - name: Build and release package
+        run: |
+          python3 -m pip install twine build
+          export TWINE_USERNAME="__token__"
+          export TWINE_PASSWORD="${{ secrets.TWINE_TOKEN }}"
+          export SKIP_FETCH_NIGHTLY_TRANSLATIONS=1
+          script/release
+
+      - name: Upload release assets
+        uses: softprops/action-gh-release@v0.1.15
+        with:
+          files: |
+            dist/*.whl
+            dist/*.tar.gz
+
+  wheels-init:
+    name: Init wheels build
+    needs: release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate requirements.txt
+        run: |
+          # Sleep to give pypi time to populate the new version across mirrors
+          sleep 240
+          version=$(echo "${{ github.ref }}" | awk -F"/" '{print $NF}' )
+          echo "home-assistant-frontend==$version" > ./requirements.txt
+
+      - name: Build wheels
+        uses: home-assistant/wheels@2023.10.5
+        with:
+          abi: cp311
+          tag: musllinux_1_2
+          arch: amd64
+          wheels-key: ${{ secrets.WHEELS_KEY }}
+          requirements: "requirements.txt"
@@ -0,0 +1,42 @@
+name: Stale
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 * * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 90 days stale policy
+        uses: actions/stale@v9.0.0
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          days-before-stale: 90
+          days-before-close: 7
+          operations-per-run: 25
+          remove-stale-when-updated: true
+          stale-issue-label: "stale"
+          exempt-issue-labels: "no-stale,Help%20wanted,help-wanted,feature-request,feature%20request"
+          stale-issue-message: >
+            There hasn't been any activity on this issue recently. Due to the
+            high number of incoming GitHub notifications, we have to clean some
+            of the old issues, as many of them have already been resolved with
+            the latest updates.
+
+            Please make sure to update to the latest Home Assistant version and
+            check if that solves the issue. Let us know if that works for you by
+            adding a comment 👍
+
+            This issue has now been marked as stale and will be closed if no
+            further activity occurs. Thank you for your contributions.
+
+          stale-pr-label: "stale"
+          exempt-pr-labels: "no-stale"
+          stale-pr-message: >
+            There hasn't been any activity on this pull request recently. This
+            pull request has been automatically marked as stale because of that
+            and will be closed if no further activity occurs within 7 days.
+
+            Thank you for your contributions.
@@ -0,0 +1,21 @@
+name: Translations
+
+on:
+  push:
+    branches:
+      - dev
+    paths:
+      - src/translations/en.json
+
+jobs:
+  upload:
+    name: Upload
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.1.1
+
+      - name: Upload Translations
+        run: |
+          export LOKALISE_TOKEN="${{ secrets.LOKALISE_TOKEN }}"
+          ./script/translations_upload_base
@@ -1,11 +1,24 @@
-build
-build-translations/*
-node_modules/*
-npm-debug.log
 .DS_Store
-hass_frontend/*
 .reify-cache

+# build
+build/
+dist/
+/hass_frontend/
+/translations/
+
+# yarn
+.yarn/*
+!.yarn/patches
+!.yarn/releases
+!.yarn/plugins
+!.yarn/sdks
+!.yarn/versions
+.pnp.*
+/node_modules/
+yarn-error.log
+npm-debug.log
+
 # Python stuff
 *.py[cod]
 *.egg
@@ -14,22 +27,26 @@ hass_frontend/*
 # venv stuff
 pyvenv.cfg
 pip-selfcheck.json
-venv
+/venv/
 .venv
-lib
-bin
-dist

 # vscode
 .vscode/*
 !.vscode/extensions.json
+!.vscode/launch.json
+!.vscode/tasks.json

 # Cast dev settings
 src/cast/dev_const.ts

 # Secrets
 .lokalise_token
-yarn-error.log

-#asdf
+# asdf
 .tool-versions
+
+# Home Assistant config
+/config/
+
+# Jetbrains
+/.idea/
@@ -1,6 +0,0 @@
-jshint:
-  enabled: false
-
-eslint:
-  enabled: true
-  config_file: .eslintrc-hound.json
@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+yarn run lint-staged --relative --shell "/bin/bash"
@@ -1 +1 @@
-12.1
+lts/iron
@@ -1,10 +1,4 @@
-build
-build-translations/*
-translations/*
-node_modules/*
-hass_frontend/*
-pip-selfcheck.json
-
-# vscode
-.vscode/*
-!.vscode/extensions.json
+CLA.md
+CODE_OF_CONDUCT.md
+LICENSE.md
+PULL_REQUEST_TEMPLATE.md
@@ -2,7 +2,8 @@
  "recommendations": [
    "dbaeumer.vscode-eslint",
    "esbenp.prettier-vscode",
-    "bierner.lit-html",
-    "runem.lit-plugin"
+    "runem.lit-plugin",
+    "github.vscode-pull-request-github",
+    "eamodio.gitlens"
  ]
 }
@@ -0,0 +1,42 @@
+{
+  // https://github.com/microsoft/vscode-js-debug/blob/master/OPTIONS.md
+  "configurations": [
+    {
+      "name": "Debug Frontend",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8123/",
+      "webRoot": "${workspaceFolder}/hass_frontend",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Frontend",
+      "outFiles": ["${workspaceFolder}/hass_frontend/frontend_latest/*.js"]
+    },
+    {
+      "name": "Debug Gallery",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8100/",
+      "webRoot": "${workspaceFolder}/gallery/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Gallery"
+    },
+    {
+      "name": "Debug Demo",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8090/",
+      "webRoot": "${workspaceFolder}/demo/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Demo"
+    },
+    {
+      "name": "Debug Cast",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8080/",
+      "webRoot": "${workspaceFolder}/cast/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Cast"
+    }
+  ]
+}
@@ -0,0 +1,214 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Develop Frontend",
+      "type": "gulp",
+      "task": "develop-app",
+      // 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 Supervisor panel",
+      "type": "gulp",
+      "task": "develop-hassio",
+      "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 Gallery",
+      "type": "gulp",
+      "task": "develop-gallery",
+      "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",
+      "task": "develop-demo",
+      "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 Cast",
+      "type": "gulp",
+      "task": "develop-cast",
+      "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": "Run HA Core in devcontainer",
+      "type": "shell",
+      "command": "script/core",
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [],
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Run HA Core for Supervisor in devcontainer",
+      "type": "shell",
+      "command": "SUPERVISOR=${input:supervisorHost} SUPERVISOR_TOKEN=${input:supervisorToken} script/core",
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [],
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Setup and fetch nightly translations",
+      "type": "gulp",
+      "task": "setup-and-fetch-nightly-translations",
+      "problemMatcher": []
+    }
+  ],
+  "inputs": [
+    {
+      "id": "supervisorHost",
+      "type": "promptString",
+      "description": "The IP of the Supervisor host running the Remote API proxy add-on"
+    },
+    {
+      "id": "supervisorToken",
+      "type": "promptString",
+      "description": "The token for the Remote API proxy add-on"
+    }
+  ]
+}
@@ -0,0 +1,34 @@
+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++) {
@@ -0,0 +1,39 @@
+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();
@@ -0,0 +1,9 @@
+compressionLevel: mixed
+
+defaultSemverRangePrefix: ""
+
+enableGlobalCache: false
+
+nodeLinker: node-modules
+
+yarnPath: .yarn/releases/yarn-4.0.2.cjs
@@ -1,5 +1,4 @@
 include README.md
-include LICENSE.md
 graft hass_frontend
 graft hass_frontend_es5
 recursive-exclude * *.py[co]
@@ -2,7 +2,7 @@

 This is the repository for the official [Home Assistant](https://home-assistant.io) frontend.

-[![Screenshot of the frontend](https://raw.githubusercontent.com/home-assistant/home-assistant-polymer/master/docs/screenshot.png)](https://demo.home-assistant.io/)
+[![Screenshot of the frontend](https://raw.githubusercontent.com/home-assistant/frontend/master/docs/screenshot.png)](https://demo.home-assistant.io/)

 - [View demo of Home Assistant](https://demo.home-assistant.io/)
 - [More information about Home Assistant](https://home-assistant.io)
@@ -14,7 +14,7 @@ This is the repository for the official [Home Assistant](https://home-assistant.
 - Development: [Instructions](https://developers.home-assistant.io/docs/frontend/development/)
 - Production build: `script/build_frontend`
 - Gallery: `cd gallery && script/develop_gallery`
- Hass.io: [Instructions](https://developers.home-assistant.io/docs/en/hassio_hass.html)
+- Supervisor: [Instructions](https://developers.home-assistant.io/docs/supervisor/developing)

 ## Frontend development

@@ -26,4 +26,4 @@ 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 variation of devices.
+We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variety of devices.
@@ -1,30 +0,0 @@
-# https://dev.azure.com/home-assistant
-
-trigger: none
-pr: none
-schedules:
-  - cron: "0 0 * * *"
-    displayName: "build preview"
-    branches:
-      include:
-      - dev
-    always: true
-variables:
-  - group: netlify
-
-jobs:
-
- job: 'Netlify_preview'
-  pool:
-    vmImage: 'ubuntu-latest'
-  steps:
-  - script: |
-      # Cast
-      curl -X POST -d {} https://api.netlify.com/build_hooks/${NETLIFY_CAST}
-
-      # Demo
-      curl -X POST -d {} https://api.netlify.com/build_hooks/${NETLIFY_DEMO}
-
-      # Gallery
-      curl -X POST -d {} https://api.netlify.com/build_hooks/${NETLIFY_GALLERY}
-    displayName: 'Trigger netlify build preview'
@@ -1,59 +0,0 @@
-# https://dev.azure.com/home-assistant
-
-trigger:
-  batch: true
-  tags:
-    include:
-      - "*"
-pr: none
-variables:
-  - name: versionWheels
-    value: '1.10.1-3.7-alpine3.11'
-  - name: versionNode
-    value: '12.1'
-  - group: twine
-resources:
-  repositories:
-    - repository: azure
-      type: github
-      name: 'home-assistant/ci-azure'
-      endpoint: 'home-assistant'
-
-
-stages:
-  - stage: "Validate"
-    jobs:
-    - template: templates/azp-job-version.yaml@azure
-
-  - stage: "Build"
-    jobs:
-      - job: "ReleasePython"
-        pool:
-          vmImage: "ubuntu-latest"
-        steps:
-          - task: UsePythonVersion@0
-            displayName: "Use Python 3.7"
-            inputs:
-              versionSpec: "3.7"
-          - task: NodeTool@0
-            displayName: "Use Node $(versionNode)"
-            inputs:
-              versionSpec: "$(versionNode)"
-          - script: pip install twine wheel
-            displayName: "Install tools"
-          - script: |
-              export TWINE_USERNAME="$(twineUser)"
-              export TWINE_PASSWORD="$(twinePassword)"
-
-              script/release
-            displayName: "Build and release package"
-  - stage: "Wheels"
-    jobs:
-      - template: templates/azp-job-wheels.yaml@azure
-        parameters:
-          builderVersion: '$(versionWheels)'
-          wheelsRequirement: 'requirement.txt'
-          preBuild:
-          - script: |
-              sleep 240
-              echo "home-assistant-frontend==$(Build.SourceBranchName)" > requirement.txt
@@ -1,70 +0,0 @@
-# https://dev.azure.com/home-assistant
-
-trigger:
-  batch: true
-  branches:
-    include:
-    - dev
-  paths:
-    include:
-    - translations/en.json
-pr: none
-schedules:
-  - cron: "30 0 * * *"
-    displayName: "frontend translation update"
-    branches:
-      include:
-      - dev
-    always: true
-variables:
- group: translation
-resources:
-  repositories:
-  - repository: azure
-    type: github
-    name: 'home-assistant/ci-azure'
-    endpoint: 'home-assistant'
-
-
-jobs:
-
- job: 'Upload'
-  pool:
-    vmImage: 'ubuntu-latest'
-  steps:
-  - task: NodeTool@0
-    displayName: 'Use Node 12.x'
-    inputs:
-      versionSpec: '12.x'
-  - script: |
-      export LOKALISE_TOKEN="$(lokaliseToken)"
-      export AZURE_BRANCH="$(Build.SourceBranchName)"
-
-      ./script/translations_upload_base
-    displayName: 'Upload Translation'
-
- job: 'Download'
-  dependsOn:
-  - 'Upload'
-  condition: or(eq(variables['Build.Reason'], 'Schedule'), eq(variables['Build.Reason'], 'Manual'))
-  pool:
-    vmImage: 'ubuntu-latest'
-  steps:
-  - task: NodeTool@0
-    displayName: 'Use Node 12.x'
-    inputs:
-      versionSpec: '12.x'
-  - template: templates/azp-step-git-init.yaml@azure
-  - script: |
-      export LOKALISE_TOKEN="$(lokaliseToken)"
-      export AZURE_BRANCH="$(Build.SourceBranchName)"
-
-      npm install
-      ./script/translations_download
-    displayName: 'Download Translation'
-  - script: |
-      git checkout dev
-      git add translation
-      git commit -am "[ci skip] Translation update"
-      git push
-    displayName: 'Update translation'
@@ -1,7 +0,0 @@
-{
-  "rules": {
-    "import/no-extraneous-dependencies": 0,
-    "no-restricted-syntax": 0,
-    "no-console": 0
-  }
-}
@@ -1,7 +1,12 @@
 {
  "extends": "../.eslintrc.json",
  "rules": {
-    "import/no-extraneous-dependencies": 0,
-    "global-require": 0
+    "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"
  }
 }
@@ -0,0 +1,39 @@
+# Bundling Home Assistant Frontend
+
+The Home Assistant build pipeline contains various steps to prepare a build.
+
+- Generating icon files to be included
+- Generating translation files to be included
+- Converting TypeScript, CSS and JSON files to JavaScript
+- Bundling
+- Minifying the files
+- Generating the HTML entrypoint files
+- Generating the service worker
+- Compressing the files
+
+## Converting files
+
+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.
+
+For development, bundling is optional. We just want to get the right files in the browser.
+
+Responsibilities of the converter during development:
+
+- Convert TypeScript to JavaScript
+- Convert CSS to JavaScript that sets the content as the default export
+- Convert JSON to JavaScript that sets the content as the default export
+- Make sure import, dynamic import and web worker references work
+  - Add extensions where missing
+  - Resolve absolute package imports
+- Filter out specific imports/packages
+- Replace constants with values
+
+In production, the following responsibilities are added:
+
+- Minify HTML
+- Bundle multiple imports so that the browser can fetch less files
+- Generate a second version that is ES5 compatible
+
+Configuration for all these steps are specified in [bundle.js](bundle.js).
@@ -0,0 +1,56 @@
+import defineProvider from "@babel/helper-define-polyfill-provider";
+
+// 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,
+  },
+  proxy: {
+    android: 49,
+    chrome: 49,
+    edge: 12,
+    firefox: 18,
+    ios: 10.0,
+    opera: 36,
+    opera_mobile: 36,
+    safari: 10.0,
+    samsung: 5.0,
+  },
+};
+
+// Map of global variables and/or instance and static properties to the
+// corresponding polyfill key and actual module to import
+const polyfillMap = {
+  global: {
+    Proxy: { key: "proxy", module: "proxy-polyfill" },
+    fetch: { key: "fetch", module: "unfetch/polyfill" },
+  },
+  instance: {},
+  static: {},
+};
+
+// Create plugin using the same factory as for CoreJS
+export default defineProvider(
+  ({ createMetaResolver, debug, shouldInjectPolyfill }) => {
+    const resolvePolyfill = createMetaResolver(polyfillMap);
+    return {
+      name: "HA Custom",
+      polyfills: PolyfillSupport,
+      usageGlobal(meta, utils) {
+        const polyfill = resolvePolyfill(meta);
+        if (polyfill && shouldInjectPolyfill(polyfill.desc.key)) {
+          debug(polyfill.desc.key);
+          utils.injectGlobalImport(polyfill.desc.module);
+        }
+      },
+    };
+  }
+);
@@ -0,0 +1,168 @@
+const path = require("path");
+
+// Currently only supports CommonJS modules, as require is synchronous. `import` would need babel running asynchronous.
+module.exports = function inlineConstants(babel, options, cwd) {
+  const t = babel.types;
+
+  if (!Array.isArray(options.modules)) {
+    throw new TypeError(
+      "babel-plugin-inline-constants: expected a `modules` array to be passed"
+    );
+  }
+
+  if (options.resolveExtensions && !Array.isArray(options.resolveExtensions)) {
+    throw new TypeError(
+      "babel-plugin-inline-constants: expected `resolveExtensions` to be an array"
+    );
+  }
+
+  const ignoreModuleNotFound = options.ignoreModuleNotFound;
+  const resolveExtensions = options.resolveExtensions;
+
+  const hasRelativeModules = options.modules.some(
+    (module) => module.startsWith(".") || module.startsWith("/")
+  );
+
+  const modules = Object.fromEntries(
+    options.modules.map((module) => {
+      const absolute = module.startsWith(".")
+        ? require.resolve(module, { paths: [cwd] })
+        : module;
+      return [absolute, require(absolute)];
+    })
+  );
+
+  const toLiteral = (value) => {
+    if (typeof value === "string") {
+      return t.stringLiteral(value);
+    }
+
+    if (typeof value === "number") {
+      return t.numericLiteral(value);
+    }
+
+    if (typeof value === "boolean") {
+      return t.booleanLiteral(value);
+    }
+
+    if (value === null) {
+      return t.nullLiteral();
+    }
+
+    throw new Error(
+      "babel-plugin-inline-constants: cannot handle non-literal `" + value + "`"
+    );
+  };
+
+  const resolveAbsolute = (value, state, resolveExtensionIndex) => {
+    if (!state.filename) {
+      throw new TypeError(
+        "babel-plugin-inline-constants: expected a `filename` to be set for files"
+      );
+    }
+
+    if (resolveExtensions && resolveExtensionIndex !== undefined) {
+      value += resolveExtensions[resolveExtensionIndex];
+    }
+
+    try {
+      return require.resolve(value, { paths: [path.dirname(state.filename)] });
+    } catch (error) {
+      if (
+        error.code === "MODULE_NOT_FOUND" &&
+        resolveExtensions &&
+        (resolveExtensionIndex === undefined ||
+          resolveExtensionIndex < resolveExtensions.length - 1)
+      ) {
+        const resolveExtensionIdx = (resolveExtensionIndex || -1) + 1;
+        return resolveAbsolute(value, state, resolveExtensionIdx);
+      }
+
+      if (error.code === "MODULE_NOT_FOUND" && ignoreModuleNotFound) {
+        return undefined;
+      }
+      throw error;
+    }
+  };
+
+  const importDeclaration = (p, state) => {
+    if (p.node.type !== "ImportDeclaration") {
+      return;
+    }
+    const absolute =
+      hasRelativeModules && p.node.source.value.startsWith(".")
+        ? resolveAbsolute(p.node.source.value, state)
+        : p.node.source.value;
+
+    if (!absolute || !(absolute in modules)) {
+      return;
+    }
+
+    const module = modules[absolute];
+
+    for (const specifier of p.node.specifiers) {
+      if (
+        specifier.type === "ImportDefaultSpecifier" &&
+        specifier.local &&
+        specifier.local.type === "Identifier"
+      ) {
+        if (!("default" in module)) {
+          throw new Error(
+            "babel-plugin-inline-constants: cannot access default export from `" +
+              p.node.source.value +
+              "`"
+          );
+        }
+
+        const variableValue = toLiteral(module.default);
+        const variable = t.variableDeclarator(
+          t.identifier(specifier.local.name),
+          variableValue
+        );
+
+        p.insertBefore({
+          type: "VariableDeclaration",
+          kind: "const",
+          declarations: [variable],
+        });
+      } else if (
+        specifier.type === "ImportSpecifier" &&
+        specifier.imported &&
+        specifier.imported.type === "Identifier" &&
+        specifier.local &&
+        specifier.local.type === "Identifier"
+      ) {
+        if (!(specifier.imported.name in module)) {
+          throw new Error(
+            "babel-plugin-inline-constants: cannot access `" +
+              specifier.imported.name +
+              "` from `" +
+              p.node.source.value +
+              "`"
+          );
+        }
+
+        const variableValue = toLiteral(module[specifier.imported.name]);
+        const variable = t.variableDeclarator(
+          t.identifier(specifier.local.name),
+          variableValue
+        );
+
+        p.insertBefore({
+          type: "VariableDeclaration",
+          kind: "const",
+          declarations: [variable],
+        });
+      } else {
+        throw new Error("Cannot handle specifier `" + specifier.type + "`");
+      }
+    }
+    p.remove();
+  };
+
+  return {
+    visitor: {
+      ImportDeclaration: importDeclaration,
+    },
+  };
+};
@@ -0,0 +1,300 @@
+const path = require("path");
+const env = require("./env.cjs");
+const paths = require("./paths.cjs");
+
+// 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 = () => {
+  const ref = env.version().endsWith("dev")
+    ? process.env.GITHUB_SHA || "dev"
+    : env.version();
+  return `https://raw.githubusercontent.com/home-assistant/frontend/${ref}/`;
+};
+
+// Files from NPM Packages that should not be imported
+module.exports.ignorePackages = () => [];
+
+// Files from NPM packages that we should replace with empty file
+module.exports.emptyPackages = ({ latestBuild, 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")
+      ),
+    isHassioBuild &&
+      require.resolve(
+        path.resolve(paths.polymer_dir, "src/components/ha-icon-picker.ts")
+      ),
+  ].filter(Boolean);
+
+module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
+  __DEV__: !isProdBuild,
+  __BUILD__: JSON.stringify(latestBuild ? "latest" : "es5"),
+  __VERSION__: JSON.stringify(env.version()),
+  __DEMO__: false,
+  __SUPERVISOR__: false,
+  __BACKWARDS_COMPAT__: false,
+  __STATIC_PATH__: "/static/",
+  "process.env.NODE_ENV": JSON.stringify(
+    isProdBuild ? "production" : "development"
+  ),
+  ...defineOverlay,
+});
+
+module.exports.htmlMinifierOptions = {
+  caseSensitive: true,
+  collapseWhitespace: true,
+  conservativeCollapse: true,
+  decodeEntities: true,
+  removeComments: true,
+  removeRedundantAttributes: true,
+  minifyCSS: {
+    compatibility: "*,-properties.zeroUnits",
+  },
+};
+
+module.exports.terserOptions = ({ latestBuild, isTestBuild }) => ({
+  safari10: !latestBuild,
+  ecma: latestBuild ? 2015 : 5,
+  module: latestBuild,
+  format: { comments: false },
+  sourceMap: !isTestBuild,
+});
+
+module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
+  babelrc: false,
+  compact: false,
+  assumptions: {
+    privateFieldsAsProperties: true,
+    setPublicClassFields: true,
+    setSpreadProperties: true,
+  },
+  browserslistEnv: latestBuild ? "modern" : "legacy",
+  presets: [
+    [
+      "@babel/preset-env",
+      {
+        useBuiltIns: latestBuild ? false : "usage",
+        corejs: latestBuild ? false : "3.33",
+        bugfixes: true,
+        shippedProposals: true,
+      },
+    ],
+    "@babel/preset-typescript",
+  ],
+  plugins: [
+    [
+      path.resolve(
+        paths.polymer_dir,
+        "build-scripts/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",
+      {
+        modules: {
+          ...Object.fromEntries(
+            ["lit", "lit-element", "lit-html"].map((m) => [
+              m,
+              [
+                "html",
+                { name: "svg", encapsulation: "svg" },
+                { name: "css", encapsulation: "style" },
+              ],
+            ])
+          ),
+          "@polymer/polymer/lib/utils/html-tag.js": ["html"],
+        },
+        strictCSS: true,
+        htmlMinifier: module.exports.htmlMinifierOptions,
+        failOnError: false, // we can turn this off in case of false positives
+      },
+    ],
+    // Import helpers and regenerator from runtime package
+    [
+      "@babel/plugin-transform-runtime",
+      { version: require("../package.json").dependencies["@babel/runtime"] },
+    ],
+    // Support  some proposals still in TC39 process
+    ["@babel/plugin-proposal-decorators", { decoratorsBeforeExport: true }],
+  ].filter(Boolean),
+  exclude: [
+    // \\ for Windows, / for Mac OS and Linux
+    /node_modules[\\/]core-js/,
+    /node_modules[\\/]webpack[\\/]buildin/,
+  ],
+  sourceMaps: !isTestBuild,
+  overrides: [
+    {
+      // 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
+      sourceType: "unambiguous",
+      include: /\/node_modules\//,
+      exclude: [
+        "element-internals-polyfill",
+        "@?lit(?:-labs|-element|-html)?",
+      ].map((p) => new RegExp(`/node_modules/${p}/`)),
+    },
+  ],
+});
+
+const nameSuffix = (latestBuild) => (latestBuild ? "-modern" : "-legacy");
+
+const outputPath = (outputRoot, latestBuild) =>
+  path.resolve(outputRoot, latestBuild ? "frontend_latest" : "frontend_es5");
+
+const publicPath = (latestBuild, root = "") =>
+  latestBuild ? `${root}/frontend_latest/` : `${root}/frontend_es5/`;
+
+/*
+  BundleConfig {
+    // Object with entrypoints that need to be bundled
+    entry: { [name: string]: pathToFile },
+    // Folder where bundled files need to be written
+    outputPath: string,
+    // absolute url-path where bundled files can be found
+    publicPath: string,
+    // extra definitions that we need to replace in source
+    defineOverlay: {[name: string]: value },
+    // if this is a production build
+    isProdBuild: boolean,
+    // If we're targeting latest browsers
+    latestBuild: boolean,
+    // If we're doing a stats build (create nice chunk names)
+    isStatsBuild: boolean,
+    // If it's just a test build in CI, skip time on source map generation
+    isTestBuild: boolean,
+    // Names of entrypoints that should not be hashed
+    dontHash: Set<string>
+  }
+  */
+
+module.exports.config = {
+  app({ isProdBuild, latestBuild, isStatsBuild, isTestBuild, isWDS }) {
+    return {
+      name: "frontend" + nameSuffix(latestBuild),
+      entry: {
+        service_worker: "./src/entrypoints/service_worker.ts",
+        app: "./src/entrypoints/app.ts",
+        authorize: "./src/entrypoints/authorize.ts",
+        onboarding: "./src/entrypoints/onboarding.ts",
+        core: "./src/entrypoints/core.ts",
+        "custom-panel": "./src/entrypoints/custom-panel.ts",
+      },
+      outputPath: outputPath(paths.app_output_root, latestBuild),
+      publicPath: publicPath(latestBuild),
+      isProdBuild,
+      latestBuild,
+      isStatsBuild,
+      isTestBuild,
+      isWDS,
+    };
+  },
+
+  demo({ isProdBuild, latestBuild, isStatsBuild }) {
+    return {
+      name: "demo" + nameSuffix(latestBuild),
+      entry: {
+        main: path.resolve(paths.demo_dir, "src/entrypoint.ts"),
+      },
+      outputPath: outputPath(paths.demo_output_root, latestBuild),
+      publicPath: publicPath(latestBuild),
+      defineOverlay: {
+        __VERSION__: JSON.stringify(`DEMO-${env.version()}`),
+        __DEMO__: true,
+      },
+      isProdBuild,
+      latestBuild,
+      isStatsBuild,
+    };
+  },
+
+  cast({ isProdBuild, latestBuild }) {
+    const entry = {
+      launcher: path.resolve(paths.cast_dir, "src/launcher/entrypoint.ts"),
+      media: path.resolve(paths.cast_dir, "src/media/entrypoint.ts"),
+    };
+
+    if (latestBuild) {
+      entry.receiver = path.resolve(
+        paths.cast_dir,
+        "src/receiver/entrypoint.ts"
+      );
+    }
+
+    return {
+      name: "cast" + nameSuffix(latestBuild),
+      entry,
+      outputPath: outputPath(paths.cast_output_root, latestBuild),
+      publicPath: publicPath(latestBuild),
+      isProdBuild,
+      latestBuild,
+      defineOverlay: {
+        __BACKWARDS_COMPAT__: true,
+      },
+    };
+  },
+
+  hassio({ isProdBuild, latestBuild, isStatsBuild, isTestBuild }) {
+    return {
+      name: "supervisor" + nameSuffix(latestBuild),
+      entry: {
+        entrypoint: path.resolve(paths.hassio_dir, "src/entrypoint.ts"),
+      },
+      outputPath: outputPath(paths.hassio_output_root, latestBuild),
+      publicPath: publicPath(latestBuild, paths.hassio_publicPath),
+      isProdBuild,
+      latestBuild,
+      isStatsBuild,
+      isTestBuild,
+      isHassioBuild: true,
+      defineOverlay: {
+        __SUPERVISOR__: true,
+        __STATIC_PATH__: `"${paths.hassio_publicPath}/static/"`,
+      },
+    };
+  },
+
+  gallery({ isProdBuild, latestBuild }) {
+    return {
+      name: "gallery" + nameSuffix(latestBuild),
+      entry: {
+        entrypoint: path.resolve(paths.gallery_dir, "src/entrypoint.js"),
+      },
+      outputPath: outputPath(paths.gallery_output_root, latestBuild),
+      publicPath: publicPath(latestBuild),
+      isProdBuild,
+      latestBuild,
+      defineOverlay: {
+        __DEMO__: true,
+      },
+    };
+  },
+};
@@ -1,195 +0,0 @@
-const path = require("path");
-const env = require("./env.js");
-const paths = require("./paths.js");
-
-// Files from NPM Packages that should not be imported
-module.exports.ignorePackages = ({ latestBuild }) => [
-  // Bloats bundle and it's not used.
-  path.resolve(require.resolve("moment"), "../locale"),
-  // Part of yaml.js and only used for !!js functions that we don't use
-  require.resolve("esprima"),
-];
-
-// Files from NPM packages that we should replace with empty file
-module.exports.emptyPackages = ({ latestBuild }) =>
-  [
-    // 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/font-roboto.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")
-      ),
-    // This polyfill is loaded in workers to support ES5, filter it out.
-    latestBuild && require.resolve("proxy-polyfill/src/index.js"),
-  ].filter(Boolean);
-
-module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
-  __DEV__: !isProdBuild,
-  __BUILD__: JSON.stringify(latestBuild ? "latest" : "es5"),
-  __VERSION__: JSON.stringify(env.version()),
-  __DEMO__: false,
-  __BACKWARDS_COMPAT__: false,
-  __STATIC_PATH__: "/static/",
-  "process.env.NODE_ENV": JSON.stringify(
-    isProdBuild ? "production" : "development"
-  ),
-  ...defineOverlay,
-});
-
-module.exports.terserOptions = (latestBuild) => ({
-  safari10: true,
-  ecma: latestBuild ? undefined : 5,
-  output: { comments: false },
-});
-
-module.exports.babelOptions = ({ latestBuild }) => ({
-  babelrc: false,
-  presets: [
-    !latestBuild && [require("@babel/preset-env").default, { modules: false }],
-    require("@babel/preset-typescript").default,
-  ].filter(Boolean),
-  plugins: [
-    // Part of ES2018. Converts {...a, b: 2} to Object.assign({}, a, {b: 2})
-    !latestBuild && [
-      "@babel/plugin-proposal-object-rest-spread",
-      { loose: true, useBuiltIns: true },
-    ],
-    // Only support the syntax, Webpack will handle it.
-    "@babel/syntax-dynamic-import",
-    "@babel/plugin-proposal-optional-chaining",
-    "@babel/plugin-proposal-nullish-coalescing-operator",
-    [
-      require("@babel/plugin-proposal-decorators").default,
-      { decoratorsBeforeExport: true },
-    ],
-    [
-      require("@babel/plugin-proposal-class-properties").default,
-      { loose: true },
-    ],
-  ].filter(Boolean),
-});
-
-// Are already ES5, cause warnings when babelified.
-module.exports.babelExclude = () => [
-  require.resolve("@mdi/js/mdi.js"),
-  require.resolve("hls.js"),
-];
-
-const outputPath = (outputRoot, latestBuild) =>
-  path.resolve(outputRoot, latestBuild ? "frontend_latest" : "frontend_es5");
-
-const publicPath = (latestBuild, root = "") =>
-  latestBuild ? `${root}/frontend_latest/` : `${root}/frontend_es5/`;
-
-/*
-BundleConfig {
-  // Object with entrypoints that need to be bundled
-  entry: { [name: string]: pathToFile },
-  // Folder where bundled files need to be written
-  outputPath: string,
-  // absolute url-path where bundled files can be found
-  publicPath: string,
-  // extra definitions that we need to replace in source
-  defineOverlay: {[name: string]: value },
-  // if this is a production build
-  isProdBuild: boolean,
-  // If we're targeting latest browsers
-  latestBuild: boolean,
-  // If we're doing a stats build (create nice chunk names)
-  isStatsBuild: boolean,
-  // Names of entrypoints that should not be hashed
-  dontHash: Set<string>
-}
-*/
-
-module.exports.config = {
-  app({ isProdBuild, latestBuild, isStatsBuild }) {
-    return {
-      entry: {
-        service_worker: "./src/entrypoints/service_worker.ts",
-        app: "./src/entrypoints/app.ts",
-        authorize: "./src/entrypoints/authorize.ts",
-        onboarding: "./src/entrypoints/onboarding.ts",
-        core: "./src/entrypoints/core.ts",
-        "custom-panel": "./src/entrypoints/custom-panel.ts",
-      },
-      outputPath: outputPath(paths.app_output_root, latestBuild),
-      publicPath: publicPath(latestBuild),
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-    };
-  },
-
-  demo({ isProdBuild, latestBuild, isStatsBuild }) {
-    return {
-      entry: {
-        main: path.resolve(paths.demo_dir, "src/entrypoint.ts"),
-      },
-      outputPath: outputPath(paths.demo_output_root, latestBuild),
-      publicPath: publicPath(latestBuild),
-      defineOverlay: {
-        __VERSION__: JSON.stringify(`DEMO-${env.version()}`),
-        __DEMO__: true,
-      },
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-    };
-  },
-
-  cast({ isProdBuild, latestBuild }) {
-    const entry = {
-      launcher: path.resolve(paths.cast_dir, "src/launcher/entrypoint.ts"),
-    };
-
-    if (latestBuild) {
-      entry.receiver = path.resolve(
-        paths.cast_dir,
-        "src/receiver/entrypoint.ts"
-      );
-    }
-
-    return {
-      entry,
-      outputPath: outputPath(paths.cast_output_root, latestBuild),
-      publicPath: publicPath(latestBuild),
-      isProdBuild,
-      latestBuild,
-      defineOverlay: {
-        __BACKWARDS_COMPAT__: true,
-      },
-    };
-  },
-
-  hassio({ isProdBuild, latestBuild }) {
-    return {
-      entry: {
-        entrypoint: path.resolve(paths.hassio_dir, "src/entrypoint.ts"),
-      },
-      outputPath: outputPath(paths.hassio_output_root, latestBuild),
-      publicPath: publicPath(latestBuild, paths.hassio_publicPath),
-      isProdBuild,
-      latestBuild,
-    };
-  },
-
-  gallery({ isProdBuild, latestBuild }) {
-    return {
-      entry: {
-        entrypoint: path.resolve(paths.gallery_dir, "src/entrypoint.js"),
-      },
-      outputPath: outputPath(paths.gallery_output_root, latestBuild),
-      publicPath: publicPath(latestBuild),
-      isProdBuild,
-      latestBuild,
-    };
-  },
-};
@@ -1,11 +1,14 @@
 const fs = require("fs");
 const path = require("path");
-const paths = require("./paths.js");
+const paths = require("./paths.cjs");

 module.exports = {
  useRollup() {
    return process.env.ROLLUP === "1";
  },
+  useWDS() {
+    return process.env.WDS === "1";
+  },
  isProdBuild() {
    return (
      process.env.NODE_ENV === "production" || module.exports.isStatsBuild()
@@ -14,7 +17,7 @@ module.exports = {
  isStatsBuild() {
    return process.env.STATS === "1";
  },
-  isTest() {
+  isTestBuild() {
    return process.env.IS_TEST === "true";
  },
  isNetlify() {
@@ -22,11 +25,11 @@ module.exports = {
  },
  version() {
    const version = fs
-      .readFileSync(path.resolve(paths.polymer_dir, "setup.py"), "utf8")
-      .match(/\d{8}\.\d+/);
+      .readFileSync(path.resolve(paths.polymer_dir, "pyproject.toml"), "utf8")
+      .match(/version\W+=\W"(\d{8}\.\d(?:\.dev)?)"/);
    if (!version) {
      throw Error("Version not found");
    }
-    return version[0];
+    return version[1];
  },
 };
@@ -1,17 +1,16 @@
-// Run HA develop mode
-const gulp = require("gulp");
-
-const env = require("../env");
-
-require("./clean.js");
-require("./translations.js");
-require("./gen-icons-json.js");
-require("./gather-static.js");
-require("./compress.js");
-require("./webpack.js");
-require("./service-worker.js");
-require("./entry-html.js");
-require("./rollup.js");
+import gulp from "gulp";
+import env from "../env.cjs";
+import "./clean.js";
+import "./compress.js";
+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";

 gulp.task(
  "develop-app",
@@ -23,12 +22,16 @@ gulp.task(
    gulp.parallel(
      "gen-service-worker-app-dev",
      "gen-icons-json",
-      "gen-pages-dev",
-      "gen-index-app-dev",
-      "build-translations"
+      "gen-pages-app-dev",
+      "build-translations",
+      "build-locale-data"
    ),
    "copy-static-app",
-    env.useRollup() ? "rollup-watch-app" : "webpack-watch-app"
+    env.useWDS()
+      ? "wds-watch-app"
+      : env.useRollup()
+        ? "rollup-watch-app"
+        : "webpack-watch-app"
  )
 );

@@ -39,15 +42,11 @@ gulp.task(
      process.env.NODE_ENV = "production";
    },
    "clean",
-    gulp.parallel("gen-icons-json", "build-translations"),
+    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-app",
    env.useRollup() ? "rollup-prod-app" : "webpack-prod-app",
-    ...// Don't compress running tests
-    (env.isTest() ? [] : ["compress-app"]),
-    gulp.parallel(
-      "gen-pages-prod",
-      "gen-index-app-prod",
-      "gen-service-worker-app-prod"
-    )
+    gulp.parallel("gen-pages-app-prod", "gen-service-worker-app-prod"),
+    // Don't compress running tests
+    ...(env.isTestBuild() ? [] : ["compress-app"])
  )
 );
@@ -1,14 +1,12 @@
-const gulp = require("gulp");
-
-const env = require("../env");
-
-require("./clean.js");
-require("./translations.js");
-require("./gather-static.js");
-require("./webpack.js");
-require("./service-worker.js");
-require("./entry-html.js");
-require("./rollup.js");
+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";

 gulp.task(
  "develop-cast",
@@ -18,9 +16,9 @@ gulp.task(
    },
    "clean-cast",
    "translations-enable-merge-backend",
-    gulp.parallel("gen-icons-json", "build-translations"),
+    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-cast",
-    "gen-index-cast-dev",
+    "gen-pages-cast-dev",
    env.useRollup() ? "rollup-dev-server-cast" : "webpack-dev-server-cast"
  )
 );
@@ -33,9 +31,9 @@ gulp.task(
    },
    "clean-cast",
    "translations-enable-merge-backend",
-    gulp.parallel("gen-icons-json", "build-translations"),
+    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-cast",
    env.useRollup() ? "rollup-prod-cast" : "webpack-prod-cast",
-    "gen-index-cast-prod"
+    "gen-pages-cast-prod"
  )
 );
@@ -1,36 +1,40 @@
-const del = require("del");
-const gulp = require("gulp");
-const paths = require("../paths");
-require("./translations");
+import { deleteSync } from "del";
+import gulp from "gulp";
+import paths from "../paths.cjs";
+import "./translations.js";

 gulp.task(
  "clean",
-  gulp.parallel("clean-translations", function cleanOutputAndBuildDir() {
-    return del([paths.app_output_root, paths.build_dir]);
-  })
+  gulp.parallel("clean-translations", async () =>
+    deleteSync([paths.app_output_root, paths.build_dir])
+  )
 );

 gulp.task(
  "clean-demo",
-  gulp.parallel("clean-translations", function cleanOutputAndBuildDir() {
-    return del([paths.demo_output_root, paths.build_dir]);
-  })
+  gulp.parallel("clean-translations", async () =>
+    deleteSync([paths.demo_output_root, paths.build_dir])
+  )
 );

 gulp.task(
  "clean-cast",
-  gulp.parallel("clean-translations", function cleanOutputAndBuildDir() {
-    return del([paths.cast_output_root, paths.build_dir]);
-  })
+  gulp.parallel("clean-translations", async () =>
+    deleteSync([paths.cast_output_root, paths.build_dir])
+  )
 );

-gulp.task("clean-hassio", function cleanOutputAndBuildDir() {
-  return del([paths.hassio_output_root, paths.build_dir]);
-});
+gulp.task("clean-hassio", async () =>
+  deleteSync([paths.hassio_output_root, paths.build_dir])
+);

 gulp.task(
  "clean-gallery",
-  gulp.parallel("clean-translations", function cleanOutputAndBuildDir() {
-    return del([paths.gallery_output_root, paths.build_dir]);
-  })
+  gulp.parallel("clean-translations", async () =>
+    deleteSync([
+      paths.gallery_output_root,
+      paths.gallery_build,
+      paths.build_dir,
+    ])
+  )
 );
@@ -1,45 +1,16 @@
 // Tasks to compress

-const gulp = require("gulp");
-const zopfli = require("gulp-zopfli-green");
-const merge = require("merge-stream");
-const path = require("path");
-const paths = require("../paths");
+import gulp from "gulp";
+import zopfli from "gulp-zopfli-green";
+import paths from "../paths.cjs";

 const zopfliOptions = { threshold: 150 };

-gulp.task("compress-app", function compressApp() {
-  const jsLatest = gulp
-    .src(path.resolve(paths.app_output_latest, "**/*.js"))
+const compressDist = (rootDir) =>
+  gulp
+    .src([`${rootDir}/**/*.{js,json,css,svg}`])
    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(paths.app_output_latest));
+    .pipe(gulp.dest(rootDir));

-  const jsEs5 = gulp
-    .src(path.resolve(paths.app_output_es5, "**/*.js"))
-    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(paths.app_output_es5));
-
-  const polyfills = gulp
-    .src(path.resolve(paths.app_output_static, "polyfills/*.js"))
-    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(path.resolve(paths.app_output_static, "polyfills")));
-
-  const translations = gulp
-    .src(path.resolve(paths.app_output_static, "translations/**/*.json"))
-    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(path.resolve(paths.app_output_static, "translations")));
-
-  const icons = gulp
-    .src(path.resolve(paths.app_output_static, "mdi/*.json"))
-    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(path.resolve(paths.app_output_static, "mdi")));
-
-  return merge(jsLatest, jsEs5, polyfills, translations, icons);
-});
-
-gulp.task("compress-hassio", function compressApp() {
-  return gulp
-    .src(path.resolve(paths.hassio_output_root, "**/*.js"))
-    .pipe(zopfli(zopfliOptions))
-    .pipe(gulp.dest(paths.hassio_output_root));
-});
+gulp.task("compress-app", () => compressDist(paths.app_output_root));
+gulp.task("compress-hassio", () => compressDist(paths.hassio_output_root));
@@ -1,16 +1,13 @@
-// Run demo develop mode
-const gulp = require("gulp");
-
-const env = require("../env");
-
-require("./clean.js");
-require("./translations.js");
-require("./gen-icons-json.js");
-require("./gather-static.js");
-require("./webpack.js");
-require("./service-worker.js");
-require("./entry-html.js");
-require("./rollup.js");
+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";

 gulp.task(
  "develop-demo",
@@ -20,7 +17,12 @@ gulp.task(
    },
    "clean-demo",
    "translations-enable-merge-backend",
-    gulp.parallel("gen-icons-json", "gen-index-demo-dev", "build-translations"),
+    gulp.parallel(
+      "gen-icons-json",
+      "gen-pages-demo-dev",
+      "build-translations",
+      "build-locale-data"
+    ),
    "copy-static-demo",
    env.useRollup() ? "rollup-dev-server-demo" : "webpack-dev-server-demo"
  )
@@ -35,9 +37,9 @@ gulp.task(
    "clean-demo",
    // Cast needs to be backwards compatible and older HA has no translations
    "translations-enable-merge-backend",
-    gulp.parallel("gen-icons-json", "build-translations"),
+    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-demo",
    env.useRollup() ? "rollup-prod-demo" : "webpack-prod-demo",
-    "gen-index-demo-prod"
+    "gen-pages-demo-prod"
  )
 );
@@ -0,0 +1,180 @@
+import fs from "fs/promises";
+import gulp from "gulp";
+import path from "path";
+import mapStream from "map-stream";
+import transform from "gulp-json-transform";
+import { LokaliseApi } from "@lokalise/node-api";
+import JSZip from "jszip";
+
+const inDir = "translations";
+const inDirFrontend = `${inDir}/frontend`;
+const inDirBackend = `${inDir}/backend`;
+const srcMeta = "src/translations/translationMetadata.json";
+const encoding = "utf8";
+
+function hasHtml(data) {
+  return /<[a-z][\s\S]*>/i.test(data);
+}
+
+function recursiveCheckHasHtml(file, data, errors, recKey) {
+  Object.keys(data).forEach(function (key) {
+    if (typeof data[key] === "object") {
+      const nextRecKey = recKey ? `${recKey}.${key}` : key;
+      recursiveCheckHasHtml(file, data[key], errors, nextRecKey);
+    } else if (hasHtml(data[key])) {
+      errors.push(`HTML found in ${file.path} at key ${recKey}.${key}`);
+    }
+  });
+}
+
+function checkHtml() {
+  const errors = [];
+
+  return mapStream(function (file, cb) {
+    const content = file.contents;
+    let error;
+    if (content) {
+      if (hasHtml(String(content))) {
+        const data = JSON.parse(String(content));
+        recursiveCheckHasHtml(file, data, errors);
+        if (errors.length > 0) {
+          error = errors.join("\r\n");
+        }
+      }
+    }
+    cb(error, file);
+  });
+}
+
+function convertBackendTranslations(data, _file) {
+  const output = { component: {} };
+  if (!data.component) {
+    return output;
+  }
+  Object.keys(data.component).forEach((domain) => {
+    if (!("entity_component" in data.component[domain])) {
+      return;
+    }
+    output.component[domain] = { entity_component: {} };
+    Object.keys(data.component[domain].entity_component).forEach((key) => {
+      output.component[domain].entity_component[key] =
+        data.component[domain].entity_component[key];
+    });
+  });
+  return output;
+}
+
+gulp.task("convert-backend-translations", function () {
+  return gulp
+    .src([`${inDirBackend}/*.json`])
+    .pipe(transform((data, file) => convertBackendTranslations(data, file)))
+    .pipe(gulp.dest(inDirBackend));
+});
+
+gulp.task("check-translations-html", function () {
+  return gulp
+    .src([`${inDirFrontend}/*.json`, `${inDirBackend}/*.json`])
+    .pipe(checkHtml());
+});
+
+gulp.task("check-all-files-exist", async function () {
+  const file = await fs.readFile(srcMeta, { encoding });
+  const meta = JSON.parse(file);
+  const writings = [];
+  Object.keys(meta).forEach((lang) => {
+    writings.push(
+      fs.writeFile(`${inDirFrontend}/${lang}.json`, JSON.stringify({}), {
+        flag: "wx",
+      }),
+      fs.writeFile(`${inDirBackend}/${lang}.json`, JSON.stringify({}), {
+        flag: "wx",
+      })
+    );
+  });
+  await Promise.allSettled(writings);
+});
+
+const lokaliseProjects = {
+  backend: "130246255a974bd3b5e8a1.51616605",
+  frontend: "3420425759f6d6d241f598.13594006",
+};
+
+gulp.task("fetch-lokalise", async function () {
+  let apiKey;
+  try {
+    apiKey =
+      process.env.LOKALISE_TOKEN ||
+      (await fs.readFile(".lokalise_token", { encoding }));
+  } catch {
+    throw new Error(
+      "An Administrator Lokalise API token is required to download the latest set of translations. Place your token in a new file `.lokalise_token` in the repo root directory."
+    );
+  }
+  const lokaliseApi = new LokaliseApi({ apiKey });
+
+  const mkdirPromise = Promise.all([
+    fs.mkdir(inDirFrontend, { recursive: true }),
+    fs.mkdir(inDirBackend, { recursive: true }),
+  ]);
+
+  await Promise.all(
+    Object.entries(lokaliseProjects).map(([project, projectId]) =>
+      lokaliseApi
+        .files()
+        .download(projectId, {
+          format: "json",
+          original_filenames: false,
+          replace_breaks: false,
+          json_unescaped_slashes: true,
+          export_empty_as: "skip",
+        })
+        .then((download) => fetch(download.bundle_url))
+        .then((response) => {
+          if (response.status === 200 || response.status === 0) {
+            return response.arrayBuffer();
+          }
+          throw new Error(response.statusText);
+        })
+        .then(JSZip.loadAsync)
+        .then(async (contents) => {
+          await mkdirPromise;
+          return Promise.all(
+            Object.keys(contents.files).map(async (filename) => {
+              const file = contents.file(filename);
+              if (!file) {
+                // no file, probably a directory
+                return Promise.resolve();
+              }
+              return file
+                .async("nodebuffer")
+                .then((content) =>
+                  fs.writeFile(
+                    path.join(
+                      inDir,
+                      project,
+                      filename.split("/").splice(-1)[0]
+                    ),
+                    content,
+                    { flag: "w", encoding }
+                  )
+                );
+            })
+          );
+        })
+        .catch((err) => {
+          console.error(err);
+          throw err;
+        })
+    )
+  );
+});
+
+gulp.task(
+  "download-translations",
+  gulp.series(
+    "fetch-lokalise",
+    "convert-backend-translations",
+    "check-translations-html",
+    "check-all-files-exist"
+  )
+);
@@ -1,95 +0,0 @@
-const del = require("del");
-const gulp = require("gulp");
-const fs = require("fs");
-const mapStream = require("map-stream");
-
-const inDirFrontend = "translations/frontend";
-const inDirBackend = "translations/backend";
-const downloadDir = "translations/downloads";
-const srcMeta = "src/translations/translationMetadata.json";
-
-const encoding = "utf8";
-
-const tasks = [];
-
-function hasHtml(data) {
-  return /<[a-z][\s\S]*>/i.test(data);
-}
-
-function recursiveCheckHasHtml(file, data, errors, recKey) {
-  Object.keys(data).forEach(function (key) {
-    if (typeof data[key] === "object") {
-      const nextRecKey = recKey ? `${recKey}.${key}` : key;
-      recursiveCheckHasHtml(file, data[key], errors, nextRecKey);
-    } else if (hasHtml(data[key])) {
-      errors.push(`HTML found in ${file.path} at key ${recKey}.${key}`);
-    }
-  });
-}
-
-function checkHtml() {
-  const errors = [];
-
-  return mapStream(function (file, cb) {
-    const content = file.contents;
-    let error;
-    if (content) {
-      if (hasHtml(String(content))) {
-        const data = JSON.parse(String(content));
-        recursiveCheckHasHtml(file, data, errors);
-        if (errors.length > 0) {
-          error = errors.join("\r\n");
-        }
-      }
-    }
-    cb(error, file);
-  });
-}
-
-let taskName = "clean-downloaded-translations";
-gulp.task(taskName, function () {
-  return del([`${downloadDir}/**`]);
-});
-tasks.push(taskName);
-
-taskName = "check-translations-html";
-gulp.task(taskName, function () {
-  return gulp.src(`${downloadDir}/*.json`).pipe(checkHtml());
-});
-tasks.push(taskName);
-
-taskName = "check-all-files-exist";
-gulp.task(taskName, function () {
-  const file = fs.readFileSync(srcMeta, { encoding });
-  const meta = JSON.parse(file);
-  Object.keys(meta).forEach((lang) => {
-    if (!fs.existsSync(`${inDirFrontend}/${lang}.json`)) {
-      fs.writeFileSync(`${inDirFrontend}/${lang}.json`, JSON.stringify({}));
-    }
-    if (!fs.existsSync(`${inDirBackend}/${lang}.json`)) {
-      fs.writeFileSync(`${inDirBackend}/${lang}.json`, JSON.stringify({}));
-    }
-  });
-  return Promise.resolve();
-});
-tasks.push(taskName);
-
-taskName = "move-downloaded-translations";
-gulp.task(taskName, function () {
-  return gulp.src(`${downloadDir}/*.json`).pipe(gulp.dest(inDirFrontend));
-});
-tasks.push(taskName);
-
-taskName = "check-downloaded-translations";
-gulp.task(
-  taskName,
-  gulp.series(
-    "check-translations-html",
-    "move-downloaded-translations",
-    "check-all-files-exist",
-    "clean-downloaded-translations"
-  )
-);
-tasks.push(taskName);
-
-module.exports = tasks;
@@ -1,304 +1,233 @@
 // Tasks to generate entry HTML
-/* eslint-disable import/no-dynamic-require */
-/* eslint-disable global-require */
-const gulp = require("gulp");
-const fs = require("fs-extra");
-const path = require("path");
-const template = require("lodash.template");
-const minify = require("html-minifier").minify;
-const paths = require("../paths.js");
-const env = require("../env.js");

-const templatePath = (tpl) =>
-  path.resolve(paths.polymer_dir, "src/html/", `${tpl}.html.template`);
+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 { htmlMinifierOptions, terserOptions } from "../bundle.cjs";
+import env from "../env.cjs";
+import paths from "../paths.cjs";

-const readFile = (pth) => fs.readFileSync(pth).toString();
-
-const renderTemplate = (pth, data = {}, pathFunc = templatePath) => {
-  const compiled = template(readFile(pathFunc(pth)));
+const renderTemplate = (templateFile, data = {}) => {
+  const compiled = template(
+    fs.readFileSync(templateFile, { encoding: "utf-8" })
+  );
  return compiled({
    ...data,
    useRollup: env.useRollup(),
-    renderTemplate,
+    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
+      ),
  });
 };

-const renderDemoTemplate = (pth, data = {}) =>
-  renderTemplate(pth, data, (tpl) =>
-    path.resolve(paths.demo_dir, "src/html/", `${tpl}.html.template`)
+const WRAP_TAGS = { ".js": "script", ".css": "style" };
+
+const minifyHtml = (content, ext) => {
+  const wrapTag = WRAP_TAGS[ext] || "";
+  const begTag = wrapTag && `<${wrapTag}>`;
+  const endTag = wrapTag && `</${wrapTag}>`;
+  return minify(begTag + content + endTag, {
+    ...htmlMinifierOptions,
+    conservativeCollapse: false,
+    minifyJS: terserOptions({
+      latestBuild: false, // Shared scripts should be ES5
+      isTestBuild: true, // Don't need source maps
+    }),
+  }).then((wrapped) =>
+    wrapTag ? wrapped.slice(begTag.length, -endTag.length) : wrapped
  );
+};

-const renderCastTemplate = (pth, data = {}) =>
-  renderTemplate(pth, data, (tpl) =>
-    path.resolve(paths.cast_dir, "src/html/", `${tpl}.html.template`)
-  );
+// Function to generate a dev task for each project's configuration
+// Note Currently WDS paths are hard-coded to only work for app
+const genPagesDevTask =
+  (
+    pageEntries,
+    inputRoot,
+    outputRoot,
+    useWDS = false,
+    inputSub = "src/html",
+    publicRoot = ""
+  ) =>
+  async () => {
+    for (const [page, entries] of Object.entries(pageEntries)) {
+      const content = renderTemplate(
+        path.resolve(inputRoot, inputSub, `${page}.template`),
+        {
+          latestEntryJS: entries.map((entry) =>
+            useWDS
+              ? `http://localhost:8000/src/entrypoints/${entry}.ts`
+              : `${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`,
+          es5CustomPanelJS: `${publicRoot}/frontend_es5/custom-panel.js`,
+        }
+      );
+      fs.outputFileSync(path.resolve(outputRoot, page), content);
+    }
+  };

-const renderGalleryTemplate = (pth, data = {}) =>
-  renderTemplate(pth, data, (tpl) =>
-    path.resolve(paths.gallery_dir, "src/html/", `${tpl}.html.template`)
-  );
-
-const minifyHtml = (content) =>
-  minify(content, {
-    collapseWhitespace: true,
-    minifyJS: true,
-    minifyCSS: true,
-    removeComments: true,
-  });
-
-const PAGES = ["onboarding", "authorize"];
-
-gulp.task("gen-pages-dev", (done) => {
-  for (const page of PAGES) {
-    const content = renderTemplate(page, {
-      latestPageJS: `/frontend_latest/${page}.js`,
-
-      es5PageJS: `/frontend_es5/${page}.js`,
-    });
-
-    fs.outputFileSync(
-      path.resolve(paths.app_output_root, `${page}.html`),
-      content
+// Same as previous but for production builds
+// (includes minification and hashed file names from manifest)
+const genPagesProdTask =
+  (
+    pageEntries,
+    inputRoot,
+    outputRoot,
+    outputLatest,
+    outputES5,
+    inputSub = "src/html"
+  ) =>
+  async () => {
+    const latestManifest = fs.readJsonSync(
+      path.resolve(outputLatest, "manifest.json")
    );
-  }
-  done();
-});
+    const es5Manifest = outputES5
+      ? fs.readJsonSync(path.resolve(outputES5, "manifest.json"))
+      : {};
+    const minifiedHTML = [];
+    for (const [page, entries] of Object.entries(pageEntries)) {
+      const content = renderTemplate(
+        path.resolve(inputRoot, inputSub, `${page}.template`),
+        {
+          latestEntryJS: entries.map((entry) => latestManifest[`${entry}.js`]),
+          es5EntryJS: entries.map((entry) => es5Manifest[`${entry}.js`]),
+          latestCustomPanelJS: latestManifest["custom-panel.js"],
+          es5CustomPanelJS: es5Manifest["custom-panel.js"],
+        }
+      );
+      minifiedHTML.push(
+        minifyHtml(content, path.extname(page)).then((minified) =>
+          fs.outputFileSync(path.resolve(outputRoot, page), minified)
+        )
+      );
+    }
+    await Promise.all(minifiedHTML);
+  };

-gulp.task("gen-pages-prod", (done) => {
-  const latestManifest = require(path.resolve(
+// Map HTML pages to their required entrypoints
+const APP_PAGE_ENTRIES = {
+  "authorize.html": ["authorize"],
+  "onboarding.html": ["onboarding"],
+  "index.html": ["core", "app"],
+};
+
+gulp.task(
+  "gen-pages-app-dev",
+  genPagesDevTask(
+    APP_PAGE_ENTRIES,
+    paths.polymer_dir,
+    paths.app_output_root,
+    env.useWDS()
+  )
+);
+
+gulp.task(
+  "gen-pages-app-prod",
+  genPagesProdTask(
+    APP_PAGE_ENTRIES,
+    paths.polymer_dir,
+    paths.app_output_root,
    paths.app_output_latest,
-    "manifest.json"
-  ));
-  const es5Manifest = require(path.resolve(
-    paths.app_output_es5,
-    "manifest.json"
-  ));
+    paths.app_output_es5
+  )
+);

-  for (const page of PAGES) {
-    const content = renderTemplate(page, {
-      latestPageJS: latestManifest[`${page}.js`],
+const CAST_PAGE_ENTRIES = {
+  "faq.html": ["launcher"],
+  "index.html": ["launcher"],
+  "media.html": ["media"],
+  "receiver.html": ["receiver"],
+};

-      es5PageJS: es5Manifest[`${page}.js`],
-    });
+gulp.task(
+  "gen-pages-cast-dev",
+  genPagesDevTask(CAST_PAGE_ENTRIES, paths.cast_dir, paths.cast_output_root)
+);

-    fs.outputFileSync(
-      path.resolve(paths.app_output_root, `${page}.html`),
-      minifyHtml(content)
-    );
-  }
-  done();
-});
-
-gulp.task("gen-index-app-dev", (done) => {
-  const content = renderTemplate("index", {
-    latestAppJS: "/frontend_latest/app.js",
-    latestCoreJS: "/frontend_latest/core.js",
-    latestCustomPanelJS: "/frontend_latest/custom-panel.js",
-
-    es5AppJS: "/frontend_es5/app.js",
-    es5CoreJS: "/frontend_es5/core.js",
-    es5CustomPanelJS: "/frontend_es5/custom-panel.js",
-  }).replace(/#THEMEC/g, "{{ theme_color }}");
-
-  fs.outputFileSync(path.resolve(paths.app_output_root, "index.html"), content);
-  done();
-});
-
-gulp.task("gen-index-app-prod", (done) => {
-  const latestManifest = require(path.resolve(
-    paths.app_output_latest,
-    "manifest.json"
-  ));
-  const es5Manifest = require(path.resolve(
-    paths.app_output_es5,
-    "manifest.json"
-  ));
-  const content = renderTemplate("index", {
-    latestAppJS: latestManifest["app.js"],
-    latestCoreJS: latestManifest["core.js"],
-    latestCustomPanelJS: latestManifest["custom-panel.js"],
-
-    es5AppJS: es5Manifest["app.js"],
-    es5CoreJS: es5Manifest["core.js"],
-    es5CustomPanelJS: es5Manifest["custom-panel.js"],
-  });
-  const minified = minifyHtml(content).replace(/#THEMEC/g, "{{ theme_color }}");
-
-  fs.outputFileSync(
-    path.resolve(paths.app_output_root, "index.html"),
-    minified
-  );
-  done();
-});
-
-gulp.task("gen-index-cast-dev", (done) => {
-  const contentReceiver = renderCastTemplate("receiver", {
-    latestReceiverJS: "/frontend_latest/receiver.js",
-  });
-  fs.outputFileSync(
-    path.resolve(paths.cast_output_root, "receiver.html"),
-    contentReceiver
-  );
-
-  const contentFAQ = renderCastTemplate("launcher-faq", {
-    latestLauncherJS: "/frontend_latest/launcher.js",
-    es5LauncherJS: "/frontend_es5/launcher.js",
-  });
-  fs.outputFileSync(
-    path.resolve(paths.cast_output_root, "faq.html"),
-    contentFAQ
-  );
-
-  const contentLauncher = renderCastTemplate("launcher", {
-    latestLauncherJS: "/frontend_latest/launcher.js",
-    es5LauncherJS: "/frontend_es5/launcher.js",
-  });
-  fs.outputFileSync(
-    path.resolve(paths.cast_output_root, "index.html"),
-    contentLauncher
-  );
-  done();
-});
-
-gulp.task("gen-index-cast-prod", (done) => {
-  const latestManifest = require(path.resolve(
+gulp.task(
+  "gen-pages-cast-prod",
+  genPagesProdTask(
+    CAST_PAGE_ENTRIES,
+    paths.cast_dir,
+    paths.cast_output_root,
    paths.cast_output_latest,
-    "manifest.json"
-  ));
-  const es5Manifest = require(path.resolve(
-    paths.cast_output_es5,
-    "manifest.json"
-  ));
+    paths.cast_output_es5
+  )
+);

-  const contentReceiver = renderCastTemplate("receiver", {
-    latestReceiverJS: latestManifest["receiver.js"],
-  });
-  fs.outputFileSync(
-    path.resolve(paths.cast_output_root, "receiver.html"),
-    contentReceiver
-  );
+const DEMO_PAGE_ENTRIES = { "index.html": ["main"] };

-  const contentFAQ = renderCastTemplate("launcher-faq", {
-    latestLauncherJS: latestManifest["launcher.js"],
-    es5LauncherJS: es5Manifest["launcher.js"],
-  });
-  fs.outputFileSync(
-    path.resolve(paths.cast_output_root, "faq.html"),
-    contentFAQ
-  );
+gulp.task(
+  "gen-pages-demo-dev",
+  genPagesDevTask(DEMO_PAGE_ENTRIES, paths.demo_dir, paths.demo_output_root)
+);

-  const contentLauncher = renderCastTemplate("launcher", {
-    latestLauncherJS: latestManifest["launcher.js"],
-    es5LauncherJS: es5Manifest["launcher.js"],
-  });
-  fs.outputFileSync(
-    path.resolve(paths.cast_output_root, "index.html"),
-    contentLauncher
-  );
-  done();
-});
-
-gulp.task("gen-index-demo-dev", (done) => {
-  const content = renderDemoTemplate("index", {
-    latestDemoJS: "/frontend_latest/main.js",
-
-    es5DemoJS: "/frontend_es5/main.js",
-  });
-
-  fs.outputFileSync(
-    path.resolve(paths.demo_output_root, "index.html"),
-    content
-  );
-  done();
-});
-
-gulp.task("gen-index-demo-prod", (done) => {
-  const latestManifest = require(path.resolve(
+gulp.task(
+  "gen-pages-demo-prod",
+  genPagesProdTask(
+    DEMO_PAGE_ENTRIES,
+    paths.demo_dir,
+    paths.demo_output_root,
    paths.demo_output_latest,
-    "manifest.json"
-  ));
-  const es5Manifest = require(path.resolve(
-    paths.demo_output_es5,
-    "manifest.json"
-  ));
-  const content = renderDemoTemplate("index", {
-    latestDemoJS: latestManifest["main.js"],
+    paths.demo_output_es5
+  )
+);

-    es5DemoJS: es5Manifest["main.js"],
-  });
-  const minified = minifyHtml(content);
+const GALLERY_PAGE_ENTRIES = { "index.html": ["entrypoint"] };

-  fs.outputFileSync(
-    path.resolve(paths.demo_output_root, "index.html"),
-    minified
-  );
-  done();
-});
+gulp.task(
+  "gen-pages-gallery-dev",
+  genPagesDevTask(
+    GALLERY_PAGE_ENTRIES,
+    paths.gallery_dir,
+    paths.gallery_output_root
+  )
+);

-gulp.task("gen-index-gallery-dev", (done) => {
-  const content = renderGalleryTemplate("index", {
-    latestGalleryJS: "./frontend_latest/entrypoint.js",
-  });
+gulp.task(
+  "gen-pages-gallery-prod",
+  genPagesProdTask(
+    GALLERY_PAGE_ENTRIES,
+    paths.gallery_dir,
+    paths.gallery_output_root,
+    paths.gallery_output_latest
+  )
+);

-  fs.outputFileSync(
-    path.resolve(paths.gallery_output_root, "index.html"),
-    content
-  );
-  done();
-});
+const HASSIO_PAGE_ENTRIES = { "entrypoint.js": ["entrypoint"] };

-gulp.task("gen-index-gallery-prod", (done) => {
-  const latestManifest = require(path.resolve(
-    paths.gallery_output_latest,
-    "manifest.json"
-  ));
-  const content = renderGalleryTemplate("index", {
-    latestGalleryJS: latestManifest["entrypoint.js"],
-  });
-  const minified = minifyHtml(content);
+gulp.task(
+  "gen-pages-hassio-dev",
+  genPagesDevTask(
+    HASSIO_PAGE_ENTRIES,
+    paths.hassio_dir,
+    paths.hassio_output_root,
+    undefined,
+    "src",
+    paths.hassio_publicPath
+  )
+);

-  fs.outputFileSync(
-    path.resolve(paths.gallery_output_root, "index.html"),
-    minified
-  );
-  done();
-});
-
-gulp.task("gen-index-hassio-dev", async () => {
-  writeHassioEntrypoint(
-    `${paths.hassio_publicPath}/frontend_latest/entrypoint.js`,
-    `${paths.hassio_publicPath}/frontend_es5/entrypoint.js`
-  );
-});
-
-gulp.task("gen-index-hassio-prod", async () => {
-  const latestManifest = require(path.resolve(
+gulp.task(
+  "gen-pages-hassio-prod",
+  genPagesProdTask(
+    HASSIO_PAGE_ENTRIES,
+    paths.hassio_dir,
+    paths.hassio_output_root,
    paths.hassio_output_latest,
-    "manifest.json"
-  ));
-  const es5Manifest = require(path.resolve(
    paths.hassio_output_es5,
-    "manifest.json"
-  ));
-  writeHassioEntrypoint(
-    latestManifest["entrypoint.js"],
-    es5Manifest["entrypoint.js"]
-  );
-});
-
-function writeHassioEntrypoint(latestEntrypoint, es5Entrypoint) {
-  fs.mkdirSync(paths.hassio_output_root, { recursive: true });
-  fs.writeFileSync(
-    path.resolve(paths.hassio_output_root, "entrypoint.js"),
-    `
-try {
-  new Function("import('${latestEntrypoint}')")();
-} catch (err) {
-  var el = document.createElement('script');
-  el.src = '${es5Entrypoint}';
-  document.body.appendChild(el);
-}
-  `,
-    { encoding: "utf-8" }
-  );
-}
+    "src"
+  )
+);
@@ -0,0 +1,171 @@
+// Task to download the latest Lokalise translations from the nightly workflow artifacts
+
+import { createOAuthDeviceAuth } from "@octokit/auth-oauth-device";
+import { retry } from "@octokit/plugin-retry";
+import { Octokit } from "@octokit/rest";
+import { deleteAsync } from "del";
+import { mkdir, readFile, writeFile } from "fs/promises";
+import gulp from "gulp";
+import jszip from "jszip";
+import path from "path";
+import process from "process";
+import tar from "tar";
+
+const MAX_AGE = 24; // hours
+const OWNER = "home-assistant";
+const REPO = "frontend";
+const WORKFLOW_NAME = "nightly.yaml";
+const ARTIFACT_NAME = "translations";
+const CLIENT_ID = "Iv1.3914e28cb27834d1";
+const EXTRACT_DIR = "translations";
+const TOKEN_FILE = path.posix.join(EXTRACT_DIR, "token.json");
+const ARTIFACT_FILE = path.posix.join(EXTRACT_DIR, "artifact.json");
+
+let allowTokenSetup = false;
+gulp.task("allow-setup-fetch-nightly-translations", (done) => {
+  allowTokenSetup = true;
+  done();
+});
+
+gulp.task("fetch-nightly-translations", async function () {
+  // Skip all when environment flag is set (assumes translations are already in place)
+  if (process.env?.SKIP_FETCH_NIGHTLY_TRANSLATIONS) {
+    console.log("Skipping fetch due to environment signal");
+    return;
+  }
+
+  // Read current translations artifact info if it exists,
+  // and stop if they are not old enough
+  let currentArtifact;
+  try {
+    currentArtifact = JSON.parse(await readFile(ARTIFACT_FILE, "utf-8"));
+    const currentAge =
+      (Date.now() - Date.parse(currentArtifact.created_at)) / 3600000;
+    if (currentAge < MAX_AGE) {
+      console.log(
+        "Keeping current translations (only %s hours old)",
+        currentAge.toFixed(1)
+      );
+      return;
+    }
+  } catch {
+    currentArtifact = null;
+  }
+
+  // To store file writing promises
+  const createExtractDir = mkdir(EXTRACT_DIR, { recursive: true });
+  const writings = [];
+
+  // Authenticate to GitHub using GitHub action token if it exists,
+  // otherwise look for a saved user token or generate a new one if none
+  let tokenAuth;
+  if (process.env.GITHUB_TOKEN) {
+    tokenAuth = { token: process.env.GITHUB_TOKEN };
+  } else {
+    try {
+      tokenAuth = JSON.parse(await readFile(TOKEN_FILE, "utf-8"));
+    } catch {
+      if (!allowTokenSetup) {
+        console.log("No token found so  build wil continue with English only");
+        return;
+      }
+      const auth = createOAuthDeviceAuth({
+        clientType: "github-app",
+        clientId: CLIENT_ID,
+        onVerification: (verification) => {
+          console.log(
+            "Task needs to authenticate to GitHub to fetch the translations from nightly workflow\n" +
+              "Please go to %s to authorize this task\n" +
+              "\nEnter user code: %s\n\n" +
+              "This code will expire in %s minutes\n" +
+              "Task will automatically continue after authorization and token will be saved for future use",
+            verification.verification_uri,
+            verification.user_code,
+            (verification.expires_in / 60).toFixed(0)
+          );
+        },
+      });
+      tokenAuth = await auth({ type: "oauth" });
+      writings.push(
+        createExtractDir.then(
+          writeFile(TOKEN_FILE, JSON.stringify(tokenAuth, null, 2))
+        )
+      );
+    }
+  }
+
+  // Authenticate with token and request workflow runs from GitHub
+  console.log("Fetching new translations...");
+  const octokit = new (Octokit.plugin(retry))({
+    userAgent: "Fetch Nightly Translations",
+    auth: tokenAuth.token,
+  });
+
+  const workflowRunsResponse = await octokit.rest.actions.listWorkflowRuns({
+    owner: OWNER,
+    repo: REPO,
+    workflow_id: WORKFLOW_NAME,
+    status: "success",
+    event: "schedule",
+    per_page: 1,
+    exclude_pull_requests: true,
+  });
+  if (workflowRunsResponse.data.total_count === 0) {
+    throw Error("No successful nightly workflow runs found");
+  }
+  const latestNightlyRun = workflowRunsResponse.data.workflow_runs[0];
+
+  // Stop if current is already the latest, otherwise Find the translations artifact
+  if (currentArtifact?.workflow_run.id === latestNightlyRun.id) {
+    console.log("Stopping because current translations are still the latest");
+    return;
+  }
+  const latestArtifact = (
+    await octokit.actions.listWorkflowRunArtifacts({
+      owner: OWNER,
+      repo: REPO,
+      run_id: latestNightlyRun.id,
+    })
+  ).data.artifacts.find((artifact) => artifact.name === ARTIFACT_NAME);
+  if (!latestArtifact) {
+    throw Error("Latest nightly workflow run has no translations artifact");
+  }
+  writings.push(
+    createExtractDir.then(
+      writeFile(ARTIFACT_FILE, JSON.stringify(latestArtifact, null, 2))
+    )
+  );
+
+  // Remove the current translations
+  const deleteCurrent = Promise.all(writings).then(
+    deleteAsync([`${EXTRACT_DIR}/*`, `!${ARTIFACT_FILE}`, `!${TOKEN_FILE}`])
+  );
+
+  // Get the download URL and follow the redirect to download (stored as ArrayBuffer)
+  const downloadResponse = await octokit.actions.downloadArtifact({
+    owner: OWNER,
+    repo: REPO,
+    artifact_id: latestArtifact.id,
+    archive_format: "zip",
+  });
+  if (downloadResponse.status !== 200) {
+    throw Error("Failure downloading translations artifact");
+  }
+
+  // Artifact is a tarball, but GitHub adds it to a zip file
+  console.log("Unpacking downloaded translations...");
+  const zip = await jszip.loadAsync(downloadResponse.data);
+  await deleteCurrent;
+  const extractStream = zip.file(/.*/)[0].nodeStream().pipe(tar.extract());
+  await new Promise((resolve, reject) => {
+    extractStream.on("close", resolve).on("error", reject);
+  });
+});
+
+gulp.task(
+  "setup-and-fetch-nightly-translations",
+  gulp.series(
+    "allow-setup-fetch-nightly-translations",
+    "fetch-nightly-translations"
+  )
+);
@@ -1,40 +1,141 @@
-// Run demo develop mode
-const gulp = require("gulp");
-const fs = require("fs");
-const path = require("path");
+import fs from "fs";
+import { glob } from "glob";
+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";

-const env = require("../env");
-const paths = require("../paths");
-
-require("./clean.js");
-require("./translations.js");
-require("./gen-icons-json.js");
-require("./gather-static.js");
-require("./webpack.js");
-require("./service-worker.js");
-require("./entry-html.js");
-require("./rollup.js");
-
-gulp.task("gather-gallery-demos", async function gatherDemos() {
-  const files = await fs.promises.readdir(
-    path.resolve(paths.gallery_dir, "src/demos")
-  );
-
-  let content = "export const DEMOS = {\n";
-
-  for (const file of files) {
-    const demoId = path.basename(file, ".ts");
-    const demoPath = "../src/demos/" + demoId;
-    content += `  "${demoId}": () => import("${demoPath}"),\n`;
-  }
-
-  content += "};";
+gulp.task("gather-gallery-pages", async function gatherPages() {
+  const pageDir = path.resolve(paths.gallery_dir, "src/pages");
+  const files = await glob(path.resolve(pageDir, "**/*"));

  const galleryBuild = path.resolve(paths.gallery_dir, "build");
-
  fs.mkdirSync(galleryBuild, { recursive: true });
+
+  let content = "export const PAGES = {\n";
+
+  const processed = new Set();
+
+  for (const file of files) {
+    if (fs.lstatSync(file).isDirectory()) {
+      continue;
+    }
+    const pageId = file.substring(pageDir.length + 1, file.lastIndexOf("."));
+
+    if (processed.has(pageId)) {
+      continue;
+    }
+    processed.add(pageId);
+
+    const [category] = pageId.split("/", 2);
+
+    const demoFile = path.resolve(pageDir, `${pageId}.ts`);
+    const descriptionFile = path.resolve(pageDir, `${pageId}.markdown`);
+    const hasDemo = fs.existsSync(demoFile);
+    let hasDescription = fs.existsSync(descriptionFile);
+    let metadata = {};
+    if (hasDescription) {
+      let descriptionContent = fs.readFileSync(descriptionFile, "utf-8");
+
+      if (descriptionContent.startsWith("---")) {
+        const metadataEnd = descriptionContent.indexOf("---", 3);
+        metadata = yaml.load(descriptionContent.substring(3, metadataEnd));
+        descriptionContent = descriptionContent
+          .substring(metadataEnd + 3)
+          .trim();
+      }
+
+      // If description is just metadata
+      if (descriptionContent === "") {
+        hasDescription = false;
+      } else {
+        descriptionContent = marked(descriptionContent).replace(/`/g, "\\`");
+        fs.mkdirSync(path.resolve(galleryBuild, category), { recursive: true });
+        fs.writeFileSync(
+          path.resolve(galleryBuild, `${pageId}-description.ts`),
+          `
+          import {html} from "lit";
+          export default html\`${descriptionContent}\`
+          `
+        );
+      }
+    }
+    content += `  "${pageId}": {
+      metadata: ${JSON.stringify(metadata)},
+      ${
+        hasDescription
+          ? `description: () => import("./${pageId}-description").then(m => m.default),`
+          : ""
+      }
+      ${hasDemo ? `demo: () => import("../src/pages/${pageId}")` : ""}
+
+    },\n`;
+  }
+
+  content += "};\n";
+
+  // Generate sidebar
+  const sidebarPath = path.resolve(paths.gallery_dir, "sidebar.js");
+  const sidebar = (await import(sidebarPath)).default;
+
+  const pagesToProcess = {};
+  for (const key of processed) {
+    const [category, page] = key.split("/", 2);
+    if (!(category in pagesToProcess)) {
+      pagesToProcess[category] = new Set();
+    }
+    pagesToProcess[category].add(page);
+  }
+
+  for (const group of Object.values(sidebar)) {
+    const toProcess = pagesToProcess[group.category];
+    delete pagesToProcess[group.category];
+
+    if (!toProcess) {
+      console.error("Unknown category", group.category);
+      if (!group.pages) {
+        group.pages = [];
+      }
+      continue;
+    }
+
+    // Any pre-defined groups will not be sorted.
+    if (group.pages) {
+      for (const page of group.pages) {
+        if (!toProcess.delete(page)) {
+          console.error("Found unreferenced demo", page);
+        }
+      }
+    } else {
+      group.pages = [];
+    }
+    for (const page of Array.from(toProcess).sort()) {
+      group.pages.push(page);
+    }
+  }
+
+  for (const [category, pages] of Object.entries(pagesToProcess)) {
+    sidebar.push({
+      category,
+      header: category,
+      pages: Array.from(pages).sort(),
+    });
+  }
+
+  content += `export const SIDEBAR = ${JSON.stringify(sidebar, null, 2)};\n`;
+
  fs.writeFileSync(
-    path.resolve(galleryBuild, "import-demos.ts"),
+    path.resolve(galleryBuild, "import-pages.ts"),
    content,
    "utf-8"
  );
@@ -51,11 +152,25 @@ gulp.task(
    gulp.parallel(
      "gen-icons-json",
      "build-translations",
-      "gather-gallery-demos"
+      "build-locale-data",
+      "gather-gallery-pages"
    ),
    "copy-static-gallery",
-    "gen-index-gallery-dev",
-    env.useRollup() ? "rollup-dev-server-gallery" : "webpack-dev-server-gallery"
+    "gen-pages-gallery-dev",
+    gulp.parallel(
+      env.useRollup()
+        ? "rollup-dev-server-gallery"
+        : "webpack-dev-server-gallery",
+      async function watchMarkdownFiles() {
+        gulp.watch(
+          [
+            path.resolve(paths.gallery_dir, "src/pages/**/*.markdown"),
+            path.resolve(paths.gallery_dir, "sidebar.js"),
+          ],
+          gulp.series("gather-gallery-pages")
+        );
+      }
+    )
  )
 );

@@ -70,10 +185,11 @@ gulp.task(
    gulp.parallel(
      "gen-icons-json",
      "build-translations",
-      "gather-gallery-demos"
+      "build-locale-data",
+      "gather-gallery-pages"
    ),
    "copy-static-gallery",
    env.useRollup() ? "rollup-prod-gallery" : "webpack-prod-gallery",
-    "gen-index-gallery-prod"
+    "gen-pages-gallery-prod"
  )
 );
@@ -1,10 +1,10 @@
 // Gulp task to gather all static files.

-const gulp = require("gulp");
-const path = require("path");
-const cpx = require("cpx");
-const fs = require("fs-extra");
-const paths = require("../paths");
+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);
@@ -13,19 +13,28 @@ const polyPath = (...parts) => path.resolve(paths.polymer_dir, ...parts);
 const copyFileDir = (fromFile, toDir) =>
  fs.copySync(fromFile, path.join(toDir, path.basename(fromFile)));

-const genStaticPath = (staticDir) => (...parts) =>
-  path.resolve(staticDir, ...parts);
+const genStaticPath =
+  (staticDir) =>
+  (...parts) =>
+    path.resolve(staticDir, ...parts);

 function copyTranslations(staticDir) {
  const staticPath = genStaticPath(staticDir);

  // Translation output
  fs.copySync(
-    polyPath("build-translations/output"),
+    polyPath("build/translations/output"),
    staticPath("translations")
  );
 }

+function copyLocaleData(staticDir) {
+  const staticPath = genStaticPath(staticDir);
+
+  // Locale data output
+  fs.copySync(polyPath("build/locale-data"), staticPath("locale-data"));
+}
+
 function copyMdiIcons(staticDir) {
  const staticPath = genStaticPath(staticDir);

@@ -54,6 +63,9 @@ function copyPolyfills(staticDir) {
 }

 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"));
@@ -62,12 +74,20 @@ function copyLoaderJS(staticDir) {
 function copyFonts(staticDir) {
  const staticPath = genStaticPath(staticDir);
  // Local fonts
-  cpx.copySync(
-    npmPath("roboto-fontface/fonts/roboto/*.woff2"),
-    staticPath("fonts/roboto")
+  fs.copySync(
+    npmPath("roboto-fontface/fonts/roboto/"),
+    staticPath("fonts/roboto/"),
+    {
+      filter: (src) => !src.includes(".") || src.endsWith(".woff2"),
+    }
  );
 }

+function copyQrScannerWorker(staticDir) {
+  const staticPath = genStaticPath(staticDir);
+  copyFileDir(npmPath("qr-scanner/qr-scanner-worker.min.js"), staticPath("js"));
+}
+
 function copyMapPanel(staticDir) {
  const staticPath = genStaticPath(staticDir);
  copyFileDir(
@@ -80,11 +100,27 @@ function copyMapPanel(staticDir) {
  );
 }

+gulp.task("copy-locale-data", async () => {
+  const staticDir = paths.app_output_static;
+  copyLocaleData(staticDir);
+});
+
 gulp.task("copy-translations-app", async () => {
  const staticDir = paths.app_output_static;
  copyTranslations(staticDir);
 });

+gulp.task("copy-translations-supervisor", async () => {
+  const staticDir = paths.hassio_output_static;
+  copyTranslations(staticDir);
+});
+
+gulp.task("copy-static-supervisor", async () => {
+  const staticDir = paths.hassio_output_static;
+  copyLocaleData(staticDir);
+  copyFonts(staticDir);
+});
+
 gulp.task("copy-static-app", async () => {
  const staticDir = paths.app_output_static;
  // Basic static files
@@ -94,10 +130,14 @@ gulp.task("copy-static-app", async () => {
  copyPolyfills(staticDir);
  copyFonts(staticDir);
  copyTranslations(staticDir);
+  copyLocaleData(staticDir);
  copyMdiIcons(staticDir);

  // Panel assets
  copyMapPanel(staticDir);
+
+  // Qr Scanner assets
+  copyQrScannerWorker(staticDir);
 });

 gulp.task("copy-static-demo", async () => {
@@ -114,6 +154,7 @@ gulp.task("copy-static-demo", async () => {
  copyMapPanel(paths.demo_output_static);
  copyFonts(paths.demo_output_static);
  copyTranslations(paths.demo_output_static);
+  copyLocaleData(paths.demo_output_static);
  copyMdiIcons(paths.demo_output_static);
 });

@@ -128,6 +169,7 @@ gulp.task("copy-static-cast", async () => {
  copyMapPanel(paths.cast_output_static);
  copyFonts(paths.cast_output_static);
  copyTranslations(paths.cast_output_static);
+  copyLocaleData(paths.cast_output_static);
  copyMdiIcons(paths.cast_output_static);
 });

@@ -143,5 +185,6 @@ gulp.task("copy-static-gallery", async () => {
  copyMapPanel(paths.gallery_output_static);
  copyFonts(paths.gallery_output_static);
  copyTranslations(paths.gallery_output_static);
+  copyLocaleData(paths.gallery_output_static);
  copyMdiIcons(paths.gallery_output_static);
 });
@@ -1,17 +1,15 @@
-const gulp = require("gulp");
-const path = require("path");
-const fs = require("fs");
-const hash = require("object-hash");
+import fs from "fs";
+import gulp from "gulp";
+import hash from "object-hash";
+import path from "path";
+import paths from "../paths.cjs";

-const ICON_PACKAGE_PATH = path.resolve(
-  __dirname,
-  "../../node_modules/@mdi/svg/"
-);
+const ICON_PACKAGE_PATH = path.resolve("node_modules/@mdi/svg/");
 const META_PATH = path.resolve(ICON_PACKAGE_PATH, "meta.json");
 const PACKAGE_PATH = path.resolve(ICON_PACKAGE_PATH, "package.json");
 const ICON_PATH = path.resolve(ICON_PACKAGE_PATH, "svg");
-const OUTPUT_DIR = path.resolve(__dirname, "../../build/mdi");
-const REMOVED_ICONS_PATH = path.resolve(__dirname, "../removedIcons.json");
+const OUTPUT_DIR = path.resolve(paths.build_dir, "mdi");
+const REMOVED_ICONS_PATH = new URL("../removedIcons.json", import.meta.url);

 const encoding = "utf8";

@@ -22,17 +20,40 @@ const getMeta = () => {
    const svg = fs.readFileSync(`${ICON_PATH}/${icon.name}.svg`, {
      encoding,
    });
-    return { path: svg.match(/ d="([^"]+)"/)[1], name: icon.name };
+    return {
+      path: svg.match(/ d="([^"]+)"/)[1],
+      name: icon.name,
+      tags: icon.tags,
+      aliases: icon.aliases,
+    };
  });
 };

 const addRemovedMeta = (meta) => {
  const file = fs.readFileSync(REMOVED_ICONS_PATH, { encoding });
  const removed = JSON.parse(file);
-  const combinedMeta = [...meta, ...removed];
+  const removedMeta = removed.map((removeIcon) => ({
+    path: removeIcon.path,
+    name: removeIcon.name,
+    tags: [],
+    aliases: [],
+  }));
+  const combinedMeta = [...meta, ...removedMeta];
  return combinedMeta.sort((a, b) => a.name.localeCompare(b.name));
 };

+const homeAutomationTag = "Home Automation";
+
+const orderMeta = (meta) => {
+  const homeAutomationMeta = meta.filter((icon) =>
+    icon.tags.includes(homeAutomationTag)
+  );
+  const otherMeta = meta.filter(
+    (icon) => !icon.tags.includes(homeAutomationTag)
+  );
+  return [...homeAutomationMeta, ...otherMeta];
+};
+
 const splitBySize = (meta) => {
  const chunks = [];
  const CHUNK_SIZE = 50000;
@@ -77,8 +98,10 @@ const findDifferentiator = (curString, prevString) => {
 };

 gulp.task("gen-icons-json", (done) => {
-  const meta = addRemovedMeta(getMeta());
-  const split = splitBySize(meta);
+  const meta = getMeta();
+
+  const metaAndRemoved = addRemovedMeta(meta);
+  const split = splitBySize(metaAndRemoved);

  if (!fs.existsSync(OUTPUT_DIR)) {
    fs.mkdirSync(OUTPUT_DIR, { recursive: true });
@@ -109,12 +132,34 @@ gulp.task("gen-icons-json", (done) => {
  });

  const file = fs.readFileSync(PACKAGE_PATH, { encoding });
-  const package = JSON.parse(file);
+  const packageMeta = JSON.parse(file);

  fs.writeFileSync(
    path.resolve(OUTPUT_DIR, "iconMetadata.json"),
-    JSON.stringify({ version: package.version, parts })
+    JSON.stringify({ version: packageMeta.version, parts })
+  );
+
+  fs.writeFileSync(
+    path.resolve(OUTPUT_DIR, "iconList.json"),
+    JSON.stringify(
+      orderMeta(meta).map((icon) => ({
+        name: icon.name,
+        keywords: [
+          ...icon.tags.map((t) => t.toLowerCase().replace(/\s\/\s/g, " ")),
+          ...icon.aliases,
+        ],
+      }))
+    )
  );

  done();
 });
+
+gulp.task("gen-dummy-icons-json", (done) => {
+  if (!fs.existsSync(OUTPUT_DIR)) {
+    fs.mkdirSync(OUTPUT_DIR, { recursive: true });
+  }
+
+  fs.writeFileSync(path.resolve(OUTPUT_DIR, "iconList.json"), "[]");
+  done();
+});
@@ -1,15 +1,13 @@
-const gulp = require("gulp");
-const fs = require("fs");
-const path = require("path");
-
-const env = require("../env");
-const paths = require("../paths");
-
-require("./clean.js");
-require("./gen-icons-json.js");
-require("./webpack.js");
-require("./compress.js");
-require("./rollup.js");
+import gulp from "gulp";
+import env from "../env.cjs";
+import "./clean.js";
+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";

 gulp.task(
  "develop-hassio",
@@ -18,8 +16,12 @@ gulp.task(
      process.env.NODE_ENV = "development";
    },
    "clean-hassio",
-    "gen-icons-json",
-    "gen-index-hassio-dev",
+    "gen-dummy-icons-json",
+    "gen-pages-hassio-dev",
+    "build-supervisor-translations",
+    "copy-translations-supervisor",
+    "build-locale-data",
+    "copy-static-supervisor",
    env.useRollup() ? "rollup-watch-hassio" : "webpack-watch-hassio"
  )
 );
@@ -31,10 +33,14 @@ gulp.task(
      process.env.NODE_ENV = "production";
    },
    "clean-hassio",
-    "gen-icons-json",
+    "gen-dummy-icons-json",
+    "build-supervisor-translations",
+    "copy-translations-supervisor",
+    "build-locale-data",
+    "copy-static-supervisor",
    env.useRollup() ? "rollup-prod-hassio" : "webpack-prod-hassio",
-    "gen-index-hassio-prod",
+    "gen-pages-hassio-prod",
    ...// Don't compress running tests
-    (env.isTest() ? [] : ["compress-hassio"])
+    (env.isTestBuild() ? [] : ["compress-hassio"])
  )
 );
@@ -0,0 +1,86 @@
+import { deleteSync } from "del";
+import { mkdir, readFile, writeFile } from "fs/promises";
+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 outDir = join(paths.build_dir, "locale-data");
+
+const INTL_POLYFILLS = {
+  "intl-datetimeformat": "DateTimeFormat",
+  "intl-displaynames": "DisplayNames",
+  "intl-listformat": "ListFormat",
+  "intl-numberformat": "NumberFormat",
+  "intl-relativetimeformat": "RelativeTimeFormat",
+};
+
+const convertToJSON = async (
+  pkg,
+  lang,
+  subDir = "locale-data",
+  addFunc = "__addLocaleData",
+  skipMissing = true
+) => {
+  let localeData;
+  try {
+    localeData = await readFile(
+      join(formatjsDir, pkg, subDir, `${lang}.js`),
+      "utf-8"
+    );
+  } catch (e) {
+    // Ignore if language is missing (i.e. not supported by @formatjs)
+    if (e.code === "ENOENT" && skipMissing) {
+      console.warn(`Skipped missing data for language ${lang} from ${pkg}`);
+      return;
+    }
+    throw e;
+  }
+  // Convert to JSON
+  const obj = INTL_POLYFILLS[pkg];
+  const dataRegex = new RegExp(
+    `Intl\\.${obj}\\.${addFunc}\\((?<data>.*)\\)`,
+    "s"
+  );
+  localeData = localeData.match(dataRegex)?.groups?.data;
+  if (!localeData) {
+    throw Error(`Failed to extract data for language ${lang} from ${pkg}`);
+  }
+  // Parse to validate JSON, then stringify to minify
+  localeData = JSON.stringify(JSON.parse(localeData));
+  await writeFile(join(outDir, `${pkg}/${lang}.json`), localeData);
+};
+
+gulp.task("clean-locale-data", async () => deleteSync([outDir]));
+
+gulp.task("create-locale-data", async () => {
+  const translationMeta = JSON.parse(
+    await readFile(
+      resolve(paths.translations_src, "translationMetadata.json"),
+      "utf-8"
+    )
+  );
+  const conversions = [];
+  for (const pkg of Object.keys(INTL_POLYFILLS)) {
+    // eslint-disable-next-line no-await-in-loop
+    await mkdir(join(outDir, pkg), { recursive: true });
+    for (const lang of Object.keys(translationMeta)) {
+      conversions.push(convertToJSON(pkg, lang));
+    }
+  }
+  conversions.push(
+    convertToJSON(
+      "intl-datetimeformat",
+      "add-all-tz",
+      ".",
+      "__addTZData",
+      false
+    )
+  );
+  await Promise.all(conversions);
+});
+
+gulp.task(
+  "build-locale-data",
+  gulp.series("clean-locale-data", "create-locale-data")
+);
@@ -1,13 +1,14 @@
 // Tasks to run Rollup
-const path = require("path");
-const gulp = require("gulp");
-const rollup = require("rollup");
-const handler = require("serve-handler");
-const http = require("http");
-const log = require("fancy-log");
-const rollupConfig = require("../rollup");
-const paths = require("../paths");
-const open = require("open");
+
+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(
@@ -30,11 +31,11 @@ const bothBuilds = (createConfigFunc, params) =>
  );

 function createServer(serveOptions) {
-  const server = http.createServer((request, response) => {
-    return handler(request, response, {
+  const server = http.createServer((request, response) =>
+    handler(request, response, {
      public: serveOptions.root,
-    });
-  });
+    })
+  );

  server.listen(
    serveOptions.port,
@@ -46,7 +47,7 @@ function createServer(serveOptions) {
  );
 }

-function watchRollup(createConfig, extraWatchSrc = [], serveOptions) {
+function watchRollup(createConfig, extraWatchSrc = [], serveOptions = null) {
  const { inputOptions, outputOptions } = createConfig({
    isProdBuild: false,
    latestBuild: true,
@@ -1,13 +1,12 @@
 // Generate service worker.
 // Based on manifest, create a file with the content as service_worker.js
-/* eslint-disable import/no-dynamic-require */
-/* eslint-disable global-require */
-const gulp = require("gulp");
-const path = require("path");
-const fs = require("fs-extra");
-const workboxBuild = require("workbox-build");
-const sourceMapUrl = require("source-map-url");
-const paths = require("../paths.js");
+
+import fs from "fs-extra";
+import gulp from "gulp";
+import path from "path";
+import sourceMapUrl from "source-map-url";
+import workboxBuild from "workbox-build";
+import paths from "../paths.cjs";

 const swDest = path.resolve(paths.app_output_root, "service_worker.js");

@@ -30,10 +29,9 @@ self.addEventListener('install', (event) => {

 gulp.task("gen-service-worker-app-prod", async () => {
  // Read bundled source file
-  const bundleManifestLatest = require(path.resolve(
-    paths.app_output_latest,
-    "manifest.json"
-  ));
+  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"
@@ -48,10 +46,9 @@ gulp.task("gen-service-worker-app-prod", async () => {
  );

  // Remove ES5
-  const bundleManifestES5 = require(path.resolve(
-    paths.app_output_es5,
-    "manifest.json"
-  ));
+  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"]
@@ -1,58 +1,49 @@
-const crypto = require("crypto");
-const del = require("del");
-const path = require("path");
-const source = require("vinyl-source-stream");
-const vinylBuffer = require("vinyl-buffer");
-const gulp = require("gulp");
-const fs = require("fs");
-const foreach = require("gulp-foreach");
-const merge = require("gulp-merge-json");
-const minify = require("gulp-jsonminify");
-const rename = require("gulp-rename");
-const transform = require("gulp-json-transform");
-const { mapFiles } = require("../util");
-const env = require("../env");
-const paths = require("../paths");
+import { createHash } from "crypto";
+import { deleteSync } from "del";
+import { mkdirSync, readdirSync, readFileSync, renameSync } from "fs";
+import { writeFile } from "node:fs/promises";
+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 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 workDir = "build/translations";
 const fullDir = workDir + "/full";
 const coreDir = workDir + "/core";
 const outDir = workDir + "/output";
 let mergeBackend = false;

-gulp.task("translations-enable-merge-backend", (done) => {
-  mergeBackend = true;
-  done();
-});
+gulp.task(
+  "translations-enable-merge-backend",
+  gulp.parallel((done) => {
+    mergeBackend = true;
+    done();
+  }, "allow-setup-fetch-nightly-translations")
+);

-String.prototype.rsplit = function (sep, maxsplit) {
-  var split = this.split(sep);
-  return maxsplit
-    ? [split.slice(0, -maxsplit).join(sep)].concat(split.slice(-maxsplit))
-    : split;
-};
-
-// Panel translations which should be split from the core translations. These
-// should mirror the fragment definitions in polymer.json, so that we load
-// additional resources at equivalent points.
-const TRANSLATION_FRAGMENTS = [
-  "config",
-  "history",
-  "logbook",
-  "mailbox",
-  "profile",
-  "shopping-list",
-  "page-authorize",
-  "page-demo",
-  "page-onboarding",
-  "developer-tools",
-];
+// 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
+);

 function recursiveFlatten(prefix, data) {
  let output = {};
-  Object.keys(data).forEach(function (key) {
+  Object.keys(data).forEach((key) => {
    if (typeof data[key] === "object") {
      output = {
        ...output,
@@ -113,15 +104,19 @@ function lokaliseTransform(data, original, file) {
    if (value instanceof Object) {
      output[key] = lokaliseTransform(value, original, file);
    } else {
-      output[key] = value.replace(re_key_reference, (match, key) => {
-        const replace = key.split("::").reduce((tr, k) => {
+      output[key] = value.replace(re_key_reference, (_match, lokalise_key) => {
+        const replace = lokalise_key.split("::").reduce((tr, k) => {
          if (!tr) {
-            throw Error(`Invalid key placeholder ${key} in ${file.path}`);
+            throw Error(
+              `Invalid key placeholder ${lokalise_key} in ${file.path}`
+            );
          }
          return tr[k];
        }, original);
        if (typeof replace !== "string") {
-          throw Error(`Invalid key placeholder ${key} in ${file.path}`);
+          throw Error(
+            `Invalid key placeholder ${lokalise_key} in ${file.path}`
+          );
        }
        return replace;
      });
@@ -130,42 +125,29 @@ function lokaliseTransform(data, original, file) {
  return output;
 }

-gulp.task("clean-translations", function () {
-  return del([workDir]);
+gulp.task("clean-translations", async () => deleteSync([workDir]));
+
+gulp.task("ensure-translations-build-dir", async () => {
+  mkdirSync(workDir, { recursive: true });
 });

-gulp.task("ensure-translations-build-dir", (done) => {
-  if (!fs.existsSync(workDir)) {
-    fs.mkdirSync(workDir);
-  }
-  done();
-});
-
-gulp.task("create-test-metadata", function (cb) {
-  fs.writeFile(
-    workDir + "/testMetadata.json",
-    JSON.stringify({
-      test: {
-        nativeName: "Test",
-      },
-    }),
-    cb
-  );
-});
-
-gulp.task(
-  "create-test-translation",
-  gulp.series("create-test-metadata", function createTestTranslation() {
-    return gulp
-      .src(path.join(paths.translations_src, "en.json"))
-      .pipe(
-        transform(function (data, file) {
-          return recursiveEmpty(data);
-        })
+gulp.task("create-test-metadata", () =>
+  env.isProdBuild()
+    ? Promise.resolve()
+    : writeFile(
+        workDir + "/testMetadata.json",
+        JSON.stringify({ test: { nativeName: "Test" } })
      )
-      .pipe(rename("test.json"))
-      .pipe(gulp.dest(workDir));
-  })
+);
+
+gulp.task("create-test-translation", () =>
+  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))
 );

 /**
@@ -177,7 +159,7 @@ gulp.task(
 * 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", function () {
+gulp.task("build-master-translation", () => {
  const src = [path.join(paths.translations_src, "en.json")];

  if (mergeBackend) {
@@ -186,31 +168,25 @@ gulp.task("build-master-translation", function () {

  return gulp
    .src(src)
-    .pipe(
-      transform(function (data, file) {
-        return lokaliseTransform(data, data, file);
-      })
-    )
+    .pipe(transform((data, file) => lokaliseTransform(data, data, file)))
    .pipe(
      merge({
-        fileName: "translationMaster.json",
+        fileName: "en.json",
      })
    )
-    .pipe(gulp.dest(workDir));
+    .pipe(gulp.dest(fullDir));
 });

-gulp.task("build-merged-translations", function () {
-  return gulp
-    .src([inFrontendDir + "/*.json", workDir + "/test.json"], {
-      allowEmpty: true,
-    })
+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(
-      transform(function (data, file) {
-        return lokaliseTransform(data, data, file);
-      })
-    )
-    .pipe(
-      foreach(function (stream, file) {
+      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
@@ -220,7 +196,7 @@ gulp.task("build-merged-translations", function () {
        //       than a base translation + region.
        const tr = path.basename(file.history[0], ".json");
        const subtags = tr.split("-");
-        const src = [workDir + "/translationMaster.json"];
+        const src = [fullDir + "/en.json"];
        for (let i = 1; i <= subtags.length; i++) {
          const lang = subtags.slice(0, i).join("-");
          if (lang === "test") {
@@ -242,17 +218,17 @@ gulp.task("build-merged-translations", function () {
          )
          .pipe(gulp.dest(fullDir));
      })
-    );
-});
+    )
+);

-var taskName;
+let taskName;

 const splitTasks = [];
 TRANSLATION_FRAGMENTS.forEach((fragment) => {
  taskName = "build-translation-fragment-" + fragment;
-  gulp.task(taskName, function () {
+  gulp.task(taskName, () =>
    // Return only the translations for this fragment.
-    return gulp
+    gulp
      .src(fullDir + "/*.json")
      .pipe(
        transform((data) => ({
@@ -263,32 +239,33 @@ TRANSLATION_FRAGMENTS.forEach((fragment) => {
          },
        }))
      )
-      .pipe(gulp.dest(workDir + "/" + fragment));
-  });
+      .pipe(gulp.dest(workDir + "/" + fragment))
+  );
  splitTasks.push(taskName);
 });

 taskName = "build-translation-core";
-gulp.task(taskName, function () {
+gulp.task(taskName, () =>
  // Remove the fragment translations from the core translation.
-  return gulp
+  gulp
    .src(fullDir + "/*.json")
    .pipe(
-      transform((data, file) => {
+      transform((data, _file) => {
        TRANSLATION_FRAGMENTS.forEach((fragment) => {
          delete data.ui.panel[fragment];
        });
+        delete data.supervisor;
        return data;
      })
    )
-    .pipe(gulp.dest(coreDir));
-});
+    .pipe(gulp.dest(coreDir))
+);

 splitTasks.push(taskName);

-gulp.task("build-flattened-translations", function () {
+gulp.task("build-flattened-translations", () =>
  // Flatten the split versions of our translations, and move them into outDir
-  return gulp
+  gulp
    .src(
      TRANSLATION_FRAGMENTS.map(
        (fragment) => workDir + "/" + fragment + "/*.json"
@@ -296,42 +273,44 @@ gulp.task("build-flattened-translations", function () {
      { base: workDir }
    )
    .pipe(
-      transform(function (data) {
+      transform((data) =>
        // Polymer.AppLocalizeBehavior requires flattened json
-        return flatten(data);
-      })
+        flatten(data)
+      )
    )
-    .pipe(minify())
    .pipe(
      rename((filePath) => {
        if (filePath.dirname === "core") {
          filePath.dirname = "";
        }
+        // In dev we create the file with the fake hash in the filename
+        if (!env.isProdBuild()) {
+          filePath.basename += "-dev";
+        }
      })
    )
-    .pipe(gulp.dest(outDir));
-});
+    .pipe(gulp.dest(outDir))
+);

 const fingerprints = {};

-gulp.task(
-  "build-translation-fingerprints",
-  function fingerprintTranslationFiles() {
-    // Fingerprint full file of each language
-    const files = fs.readdirSync(fullDir);
+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()
-          ? crypto
-              .createHash("md5")
-              .update(fs.readFileSync(path.join(fullDir, files[i]), "utf-8"))
-              .digest("hex")
-          : "dev",
-      };
-    }
+  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);

@@ -340,68 +319,118 @@ gulp.task(
        throw new Error(`Unable to find hash for ${filename}`);
      }

-      fs.renameSync(
+      renameSync(
        filename,
        `${parsed.dir}/${parsed.name}-${fingerprints[parsed.name].hash}${
          parsed.ext
        }`
      );
    });
-
-    const stream = source("translationFingerprints.json");
-    stream.write(JSON.stringify(fingerprints));
-    process.nextTick(() => stream.end());
-    return stream.pipe(vinylBuffer()).pipe(gulp.dest(workDir));
  }
+
+  const stream = source("translationFingerprints.json");
+  stream.write(JSON.stringify(fingerprints));
+  process.nextTick(() => stream.end());
+  return stream.pipe(vinylBuffer()).pipe(gulp.dest(workDir));
+});
+
+gulp.task("build-translation-fragment-supervisor", () =>
+  gulp
+    .src(fullDir + "/*.json")
+    .pipe(transform((data) => data.supervisor))
+    .pipe(
+      rename((filePath) => {
+        // In dev we create the file with the fake hash in the filename
+        if (!env.isProdBuild()) {
+          filePath.basename += "-dev";
+        }
+      })
+    )
+    .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 {
+            console.warn(
+              `Skipping language ${key}. Native name was not translated.`
+            );
+          }
+        });
+        return newData;
+      })
+    )
+    .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"
+  )
 );

 gulp.task(
  "build-translations",
  gulp.series(
-    "clean-translations",
-    "ensure-translations-build-dir",
-    env.isProdBuild() ? (done) => done() : "create-test-translation",
-    "build-master-translation",
-    "build-merged-translations",
-    gulp.parallel(...splitTasks),
-    "build-flattened-translations",
+    gulp.parallel(
+      "fetch-nightly-translations",
+      gulp.series("clean-translations", "ensure-translations-build-dir")
+    ),
+    "create-translations",
    "build-translation-fingerprints",
-    function writeMetadata() {
-      return gulp
-        .src(
-          [
-            path.join(paths.translations_src, "translationMetadata.json"),
-            workDir + "/testMetadata.json",
-            workDir + "/translationFingerprints.json",
-          ],
-          { allowEmpty: true }
-        )
-        .pipe(merge({}))
-        .pipe(
-          transform(function (data) {
-            const newData = {};
-            Object.entries(data).forEach(([key, value]) => {
-              // Filter out translations without native name.
-              if (data[key].nativeName) {
-                newData[key] = data[key];
-              } else {
-                console.warn(
-                  `Skipping language ${key}. Native name was not translated.`
-                );
-              }
-              if (data[key]) newData[key] = value;
-            });
-            return newData;
-          })
-        )
-        .pipe(
-          transform((data) => ({
-            fragments: TRANSLATION_FRAGMENTS,
-            translations: data,
-          }))
-        )
-        .pipe(rename("translationMetadata.json"))
-        .pipe(gulp.dest(workDir));
-    }
+    "build-translation-write-metadata"
+  )
+);
+
+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"
  )
 );
@@ -0,0 +1,10 @@
+import gulp from "gulp";
+import { startDevServer } from "@web/dev-server";
+
+gulp.task("wds-watch-app", async () => {
+  startDevServer({
+    config: {
+      watch: true,
+    },
+  });
+});
@@ -1,42 +1,67 @@
 // Tasks to run webpack.
-const gulp = require("gulp");
-const webpack = require("webpack");
-const WebpackDevServer = require("webpack-dev-server");
-const log = require("fancy-log");
-const path = require("path");
-const paths = require("../paths");
-const {
+
+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 env from "../env.cjs";
+import paths from "../paths.cjs";
+import {
  createAppConfig,
-  createDemoConfig,
  createCastConfig,
-  createHassioConfig,
+  createDemoConfig,
  createGalleryConfig,
-} = require("../webpack");
+  createHassioConfig,
+} from "../webpack.cjs";

 const bothBuilds = (createConfigFunc, params) => [
  createConfigFunc({ ...params, latestBuild: true }),
  createConfigFunc({ ...params, latestBuild: false }),
 ];

-const runDevServer = ({
+const isWsl =
+  fs.existsSync("/proc/version") &&
+  fs
+    .readFileSync("/proc/version", "utf-8")
+    .toLocaleLowerCase()
+    .includes("microsoft");
+
+/**
+ * @param {{
+ *   compiler: import("webpack").Compiler,
+ *   contentBase: string,
+ *   port: number,
+ *   listenHost?: string
+ * }}
+ */
+const runDevServer = async ({
  compiler,
  contentBase,
  port,
  listenHost = "localhost",
-}) =>
-  new WebpackDevServer(compiler, {
-    open: true,
-    watchContentBase: true,
-    contentBase,
-  }).listen(port, listenHost, function (err) {
-    if (err) {
-      throw err;
-    }
-    // Server listening
-    log("[webpack-dev-server]", `http://localhost:${port}`);
-  });
+}) => {
+  const server = new WebpackDevServer(
+    {
+      hot: false,
+      open: true,
+      host: listenHost,
+      port,
+      static: {
+        directory: contentBase,
+        watch: true,
+      },
+    },
+    compiler
+  );

-const handler = (done) => (err, stats) => {
+  await server.start();
+  // Server listening
+  log("[webpack-dev-server]", `Project is running at http://localhost:${port}`);
+};
+
+const doneHandler = (done) => (err, stats) => {
  if (err) {
    log.error(err.stack || err);
    if (err.details) {
@@ -45,128 +70,123 @@ const handler = (done) => (err, stats) => {
    return;
  }

-  log(`Build done @ ${new Date().toLocaleTimeString()}`);
-
  if (stats.hasErrors() || stats.hasWarnings()) {
-    log.warn(stats.toString("minimal"));
+    console.log(stats.toString("minimal"));
  }

+  log(`Build done @ ${new Date().toLocaleTimeString()}`);
+
  if (done) {
    done();
  }
 };

+const prodBuild = (conf) =>
+  new Promise((resolve) => {
+    webpack(
+      conf,
+      // Resolve promise when done. Because we pass a callback, webpack closes itself
+      doneHandler(resolve)
+    );
+  });
+
 gulp.task("webpack-watch-app", () => {
-  // we are not calling done, so this command will run forever
-  webpack(createAppConfig({ isProdBuild: false, latestBuild: true })).watch(
-    { ignored: /build-translations/ },
-    handler()
-  );
+  // This command will run forever because we don't close compiler
+  webpack(
+    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("build-translations", "copy-translations-app")
+    gulp.series("create-translations", "copy-translations-app")
  );
 });

-gulp.task(
-  "webpack-prod-app",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createAppConfig, { isProdBuild: true }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-app", () =>
+  prodBuild(
+    bothBuilds(createAppConfig, {
+      isProdBuild: true,
+      isStatsBuild: env.isStatsBuild(),
+      isTestBuild: env.isTestBuild(),
+    })
+  )
 );

-gulp.task("webpack-dev-server-demo", () => {
+gulp.task("webpack-dev-server-demo", () =>
  runDevServer({
    compiler: webpack(bothBuilds(createDemoConfig, { isProdBuild: false })),
    contentBase: paths.demo_output_root,
    port: 8090,
-  });
-});
-
-gulp.task(
-  "webpack-prod-demo",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createDemoConfig, {
-          isProdBuild: true,
-        }),
-        handler(resolve)
-      )
-    )
+  })
 );

-gulp.task("webpack-dev-server-cast", () => {
+gulp.task("webpack-prod-demo", () =>
+  prodBuild(
+    bothBuilds(createDemoConfig, {
+      isProdBuild: true,
+    })
+  )
+);
+
+gulp.task("webpack-dev-server-cast", () =>
  runDevServer({
    compiler: webpack(bothBuilds(createCastConfig, { isProdBuild: false })),
    contentBase: paths.cast_output_root,
    port: 8080,
    // Accessible from the network, because that's how Cast hits it.
    listenHost: "0.0.0.0",
-  });
-});
+  })
+);

-gulp.task(
-  "webpack-prod-cast",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createCastConfig, {
-          isProdBuild: true,
-        }),
-
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-cast", () =>
+  prodBuild(
+    bothBuilds(createCastConfig, {
+      isProdBuild: true,
+    })
+  )
 );

 gulp.task("webpack-watch-hassio", () => {
-  // we are not calling done, so this command will run forever
+  // This command will run forever because we don't close compiler
  webpack(
    createHassioConfig({
      isProdBuild: false,
      latestBuild: true,
    })
-  ).watch({}, handler());
+  ).watch({ ignored: /build/, poll: isWsl }, doneHandler());
+
+  gulp.watch(
+    path.join(paths.translations_src, "en.json"),
+    gulp.series("build-supervisor-translations", "copy-translations-supervisor")
+  );
 });

-gulp.task(
-  "webpack-prod-hassio",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createHassioConfig, {
-          isProdBuild: true,
-        }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-hassio", () =>
+  prodBuild(
+    bothBuilds(createHassioConfig, {
+      isProdBuild: true,
+      isStatsBuild: env.isStatsBuild(),
+      isTestBuild: env.isTestBuild(),
+    })
+  )
 );

-gulp.task("webpack-dev-server-gallery", () => {
+gulp.task("webpack-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 })),
    contentBase: paths.gallery_output_root,
    port: 8100,
-  });
-});
-
-gulp.task(
-  "webpack-prod-gallery",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        createGalleryConfig({
-          isProdBuild: true,
-          latestBuild: true,
-        }),
-
-        handler(resolve)
-      )
-    )
+    listenHost: "0.0.0.0",
+  })
+);
+
+gulp.task("webpack-prod-gallery", () =>
+  prodBuild(
+    createGalleryConfig({
+      isProdBuild: true,
+      latestBuild: true,
+    })
+  )
 );
@@ -0,0 +1,83 @@
+#!/usr/bin/env node
+// Script to print Babel plugins and Core JS polyfills that will be used by browserslist environments
+
+import { version as babelVersion } from "@babel/core";
+import presetEnv from "@babel/preset-env";
+import compilationTargets from "@babel/helper-compilation-targets";
+import coreJSCompat from "core-js-compat";
+import { logPlugin } from "@babel/preset-env/lib/debug.js";
+// eslint-disable-next-line import/no-relative-packages
+import shippedPolyfills from "../node_modules/babel-plugin-polyfill-corejs3/lib/shipped-proposals.js";
+import { babelOptions } from "./bundle.cjs";
+
+const detailsOpen = (heading) =>
+  `<details>\n<summary><h4>${heading}</h4></summary>\n`;
+const detailsClose = "</details>\n";
+
+const dummyAPI = {
+  version: babelVersion,
+  assertVersion: () => {},
+  caller: (callback) =>
+    callback({
+      name: "Dummy Bundler",
+      supportsStaticESM: true,
+      supportsDynamicImport: true,
+      supportsTopLevelAwait: true,
+      supportsExportNamespaceFrom: true,
+    }),
+  targets: () => ({}),
+};
+
+// Generate filter function based on proposal/method inputs
+// Copied and adapted from babel-plugin-polyfill-corejs3/esm/index.mjs
+const polyfillFilter = (method, proposals, shippedProposals) => (name) => {
+  if (proposals || method === "entry-global") return true;
+  if (shippedProposals && shippedPolyfills.default.has(name)) {
+    return true;
+  }
+  if (name.startsWith("esnext.")) {
+    const esName = `es.${name.slice(7)}`;
+    // If its imaginative esName is not in latest compat data, it means the proposal is not stage 4
+    return esName in coreJSCompat.data;
+  }
+  return true;
+};
+
+// Log the plugins and polyfills for each build environment
+for (const buildType of ["Modern", "Legacy"]) {
+  const browserslistEnv = buildType.toLowerCase();
+  const babelOpts = babelOptions({ latestBuild: browserslistEnv === "modern" });
+  const presetEnvOpts = babelOpts.presets[0][1];
+
+  // Invoking preset-env in debug mode will log the included plugins
+  console.log(detailsOpen(`${buildType} Build Babel Plugins`));
+  presetEnv.default(dummyAPI, {
+    ...presetEnvOpts,
+    browserslistEnv,
+    debug: true,
+  });
+  console.log(detailsClose);
+
+  // Manually log the Core-JS polyfills using the same technique
+  if (presetEnvOpts.useBuiltIns) {
+    console.log(detailsOpen(`${buildType} Build Core-JS Polyfills`));
+    const targets = compilationTargets.default(babelOpts?.targets, {
+      browserslistEnv,
+    });
+    const polyfillList = coreJSCompat({ targets }).list.filter(
+      polyfillFilter(
+        `${presetEnvOpts.useBuiltIns}-global`,
+        presetEnvOpts?.corejs?.proposals,
+        presetEnvOpts?.shippedProposals
+      )
+    );
+    console.log(
+      "The following %i polyfills may be injected by Babel:\n",
+      polyfillList.length
+    );
+    for (const polyfill of polyfillList) {
+      logPlugin(polyfill, targets, coreJSCompat.data);
+    }
+    console.log(detailsClose);
+  }
+}
@@ -1,4 +1,4 @@
-var path = require("path");
+const path = require("path");

 module.exports = {
  polymer_dir: path.resolve(__dirname, ".."),
@@ -25,6 +25,7 @@ module.exports = {
  cast_output_es5: path.resolve(__dirname, "../cast/dist/frontend_es5"),

  gallery_dir: path.resolve(__dirname, "../gallery"),
+  gallery_build: path.resolve(__dirname, "../gallery/build"),
  gallery_output_root: path.resolve(__dirname, "../gallery/dist"),
  gallery_output_latest: path.resolve(
    __dirname,
@@ -34,6 +35,7 @@ module.exports = {

  hassio_dir: path.resolve(__dirname, "../hassio"),
  hassio_output_root: path.resolve(__dirname, "../hassio/build"),
+  hassio_output_static: path.resolve(__dirname, "../hassio/build/static"),
  hassio_output_latest: path.resolve(
    __dirname,
    "../hassio/build/frontend_latest"
@@ -1,267 +1 @@
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-  {
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-    "name": "square-inc"
-  },
-  {
-    "path": "M5.5,0H18.5A5.5,5.5 0 0,1 24,5.5V18.5A5.5,5.5 0 0,1 18.5,24H5.5A5.5,5.5 0 0,1 0,18.5V5.5A5.5,5.5 0 0,1 5.5,0M15.39,15.18C15.39,16.76 14.5,17.81 12.85,17.95V12.61C14.55,13.13 15.39,13.66 15.39,15.18M11.65,6V10.88C10.34,10.5 9.03,9.93 9.03,8.43C9.03,6.94 10.18,6.12 11.65,6M15.5,7.6L16.5,6.8C15.62,5.66 14.4,4.92 12.85,4.77V3.8H11.65V3.8L11.65,4.75C9.5,4.89 7.68,6.17 7.68,8.5C7.68,11 9.74,11.78 11.65,12.29V17.96C10.54,17.84 9.29,17.31 8.43,16.03L7.3,16.78C8.2,18.12 9.76,19 11.65,19.14V20.2H12.07L12.85,20.2V19.16C15.35,19 16.7,17.34 16.7,15.14C16.7,12.58 14.81,11.76 12.85,11.19V6.05C14,6.22 14.85,6.76 15.5,7.6Z",
-    "name": "square-inc-cash"
-  },
-  {
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-    "name": "steam-box"
-  },
-  {
-    "path": "M14.92,17.16L16.75,13.53H19.45L14.94,22.5L10.37,13.53H13.07L14.92,17.16M10.63,8.66L8.18,13.55H4.55L10.61,1.5L16.74,13.55H13.11L10.63,8.66Z",
-    "name": "strava"
-  },
-  {
-    "path": "M12,14C11,14 9,15 9,16C9,18 12,18 12,18V17A1,1 0 0,1 11,16A1,1 0 0,1 12,15V14M12,19C12,19 8,18.5 8,16.5C8,13.5 11,12.75 12,12.75V11.5C11,11.5 7,13 7,16C7,20 12,20 12,20V19M10.07,7.03L11.26,7.56C11.69,5.12 12.84,3.5 12.84,3.5C12.41,4.53 12.13,5.38 11.95,6.05C13.16,3.55 15.61,2 15.61,2C14.43,3.18 13.56,4.46 12.97,5.53C14.55,3.85 16.74,2.75 16.74,2.75C14.05,4.47 12.84,7.2 12.54,7.96L13.09,8.04C13.09,8.56 13.09,9.04 13.34,9.42C14.1,11.31 18,11.47 18,16C18,20.53 13.97,22 11.83,22C9.69,22 5,21.03 5,16C5,10.97 9.95,10.93 10.83,8.92C10.95,8.54 10.07,7.03 10.07,7.03Z",
-    "name": "tor"
-  },
-  {
-    "path": "M17,11H13V15.5C13,16.44 13.28,17 14.5,17H17V21C17,21 15.54,21.05 14.17,21.05C10.8,21.05 9.5,19 9.5,16.75V11H7V7C10.07,6.74 10.27,4.5 10.5,3H13V7H17",
-    "name": "tumblr"
-  },
-  {
-    "path": "M16,11H13V14.9C13,15.63 13.14,16 14.1,16H16V19C16,19 14.97,19.1 13.9,19.1C11.25,19.1 10,17.5 10,15.7V11H8V8.2C10.41,8 10.62,6.16 10.8,5H13V8H16M20,2H4C2.89,2 2,2.89 2,4V20A2,2 0 0,0 4,22H20A2,2 0 0,0 22,20V4C22,2.89 21.1,2 20,2Z",
-    "name": "tumblr-box"
-  },
-  {
-    "path": "M3.75,17L8,12.75V16H18V11.5L20,9.5V16A2,2 0 0,1 18,18H8V21.25L3.75,17M20.25,7L16,11.25V8H6V12.5L4,14.5V8A2,2 0 0,1 6,6H16V2.75L20.25,7Z",
-    "name": "tumblr-reblog"
-  },
-  {
-    "path": "M5,3H19A2,2 0 0,1 21,5V19A2,2 0 0,1 19,21H5A2,2 0 0,1 3,19V5A2,2 0 0,1 5,3M17.71,9.33C18.19,8.93 18.75,8.45 19,7.92C18.59,8.13 18.1,8.26 17.56,8.33C18.06,7.97 18.47,7.5 18.68,6.86C18.16,7.14 17.63,7.38 16.97,7.5C15.42,5.63 11.71,7.15 12.37,9.95C9.76,9.79 8.17,8.61 6.85,7.16C6.1,8.38 6.75,10.23 7.64,10.74C7.18,10.71 6.83,10.57 6.5,10.41C6.54,11.95 7.39,12.69 8.58,13.09C8.22,13.16 7.82,13.18 7.44,13.12C7.81,14.19 8.58,14.86 9.9,15C9,15.76 7.34,16.29 6,16.08C7.15,16.81 8.46,17.39 10.28,17.31C14.69,17.11 17.64,13.95 17.71,9.33Z",
-    "name": "twitter-box"
-  },
-  {
-    "path": "M17.71,9.33C18.19,8.93 18.75,8.45 19,7.92C18.59,8.13 18.1,8.26 17.56,8.33C18.06,7.97 18.47,7.5 18.68,6.86C18.16,7.14 17.63,7.38 16.97,7.5C15.42,5.63 11.71,7.15 12.37,9.95C9.76,9.79 8.17,8.61 6.85,7.16C6.1,8.38 6.75,10.23 7.64,10.74C7.18,10.71 6.83,10.57 6.5,10.41C6.54,11.95 7.39,12.69 8.58,13.09C8.22,13.16 7.82,13.18 7.44,13.12C7.81,14.19 8.58,14.86 9.9,15C9,15.76 7.34,16.29 6,16.08C7.15,16.81 8.46,17.39 10.28,17.31C14.69,17.11 17.64,13.95 17.71,9.33M12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2Z",
-    "name": "twitter-circle"
-  },
-  {
-    "path": "M6.38,13.24V13.24C6.38,11.84 6.38,10.44 6.38,9.04H7.4V15.84H6.39C6.39,15.63 6.39,15.42 6.39,15.21C5.93,15.68 5.29,15.96 4.58,15.96C3.12,15.96 2,14.9 2,13.3V9.04H3V13.24C3,14.33 3.74,15.04 4.7,15.04C5.64,15.04 6.38,14.31 6.38,13.24M9.14,9.04V11.5C9.37,11.29 9.65,11.1 9.95,10.97C10.25,10.85 10.58,10.78 10.91,10.78C12.37,10.78 13.5,11.94 13.5,13.37C13.5,14.8 12.37,15.96 10.91,15.96C10.58,15.96 10.25,15.89 9.95,15.77C9.64,15.64 9.37,15.45 9.13,15.22C9.13,15.43 9.13,15.63 9.13,15.84C8.81,15.84 8.5,15.84 8.16,15.84V9.04H9.14M12.55,13.37V13.37C12.55,12.41 11.77,11.65 10.84,11.65C9.89,11.65 9.13,12.41 9.13,13.37C9.13,14.32 9.88,15.09 10.84,15.09C11.77,15.09 12.55,14.32 12.55,13.37M16.46,10.79C17.9,10.79 18.95,11.89 18.95,13.36V13.69H14.91C15.04,14.5 15.71,15.09 16.55,15.09C17.13,15.09 17.61,14.86 18,14.36L18.7,14.89C18.2,15.55 17.46,15.95 16.55,15.95C15.06,15.95 13.91,14.84 13.91,13.36C13.91,11.97 15,10.79 16.46,10.79M14.92,12.91H17.95C17.79,12.15 17.18,11.65 16.44,11.65C15.71,11.65 15.1,12.15 14.92,12.91M20.5,13V15.84H19.5V10.89C19.82,10.89 20.14,10.89 20.47,10.89V11.5C20.71,11.1 21.11,10.85 21.66,10.85H22V11.76H21.59C20.95,11.76 20.5,12.26 20.5,13",
-    "name": "uber"
-  },
-  {
-    "path": "M19.5,3C20.14,4.08 20.44,5.19 20.44,6.6C20.44,11.08 16.61,16.91 13.5,21H6.41L3.56,4L9.77,3.39L11.28,15.5C12.69,13.21 14.42,9.61 14.42,7.16C14.42,5.81 14.19,4.9 13.83,4.15L19.5,3Z",
-    "name": "venmo"
-  },
-  {
-    "path": "M5,3A2,2 0 0,0 3,5V19A2,2 0 0,0 5,21H19A2,2 0 0,0 21,19V5A2,2 0 0,0 19,3H5M5.5,8.5H7C7.36,8.5 7.5,8.66 7.64,9.07C8.36,11.17 9.57,13 10.07,13C10.26,13 10.35,12.92 10.35,12.45V10.28C10.29,9.28 9.76,9.19 9.76,8.84C9.76,8.67 9.9,8.5 10.14,8.5H12.45C12.77,8.5 12.87,8.67 12.87,9.04V11.96C12.87,12.27 13,12.38 13.1,12.38C13.29,12.38 13.45,12.27 13.79,11.93C14.85,10.74 15.6,8.92 15.6,8.92C15.7,8.7 15.87,8.5 16.24,8.5H17.71C18.16,8.5 18.26,8.73 18.16,9.04C17.97,9.9 16.18,12.43 16.18,12.43C16,12.68 15.96,12.8 16.18,13.09C16.33,13.3 16.85,13.74 17.19,14.15C17.83,14.86 18.3,15.46 18.44,15.87C18.56,16.29 18.35,16.5 17.93,16.5H16.45C15.89,16.5 15.73,16.05 14.73,15.05C13.85,14.21 13.5,14.1 13.26,14.1C12.96,14.1 12.87,14.18 12.87,14.61V15.93C12.87,16.29 12.76,16.5 11.82,16.5C10.26,16.5 8.54,15.55 7.33,13.8C5.5,11.24 5,9.31 5,8.92C5,8.7 5.08,8.5 5.5,8.5Z",
-    "name": "vk-box"
-  },
-  {
-    "path": "M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M5.5,8.5H7C7.36,8.5 7.5,8.66 7.64,9.07C8.36,11.17 9.57,13 10.07,13C10.26,13 10.35,12.92 10.35,12.45V10.28C10.29,9.28 9.76,9.19 9.76,8.84C9.76,8.67 9.9,8.5 10.14,8.5H12.45C12.77,8.5 12.87,8.67 12.87,9.04V11.96C12.87,12.27 13,12.38 13.1,12.38C13.29,12.38 13.45,12.27 13.79,11.93C14.85,10.74 15.6,8.92 15.6,8.92C15.7,8.7 15.87,8.5 16.24,8.5H17.71C18.16,8.5 18.26,8.73 18.16,9.04C17.97,9.9 16.18,12.43 16.18,12.43C16,12.68 15.96,12.8 16.18,13.09C16.33,13.3 16.85,13.74 17.19,14.15C17.83,14.86 18.3,15.46 18.44,15.87C18.56,16.29 18.35,16.5 17.93,16.5H16.45C15.89,16.5 15.73,16.05 14.73,15.05C13.85,14.21 13.5,14.1 13.26,14.1C12.96,14.1 12.87,14.18 12.87,14.61V15.93C12.87,16.29 12.76,16.5 11.82,16.5C10.26,16.5 8.54,15.55 7.33,13.8C5.5,11.24 5,9.31 5,8.92C5,8.7 5.08,8.5 5.5,8.5Z",
-    "name": "vk-circle"
-  },
-  {
-    "path": "M17,17.5L12,15L7,17.5V5H5V19H19V5H17V17.5M12,12.42L14.25,13.77L13.65,11.22L15.64,9.5L13,9.27L12,6.86L11,9.27L8.36,9.5L10.35,11.22L9.75,13.77L12,12.42M5,3H19A2,2 0 0,1 21,5V19A2,2 0 0,1 19,21H5A2,2 0 0,1 3,19V5A2,2 0 0,1 5,3Z",
-    "name": "wunderlist"
-  },
-  {
-    "path": "M0 16.7L3.2 12.9L0 9.1L1.5 7.8L4.5 11.3L7.5 7.8L9 9.1L5.8 12.9L9 16.7L7.5 18L4.5 14.4L1.5 18L0 16.7M24 16.9C24 17.4 23.6 17.9 23 17.9H20C18.9 17.9 18 17 18 15.9V13.9C18 12.8 18.9 11.9 20 11.9H22V9.9H18V8H23C23.5 8 24 8.4 24 9M22 14H20V16H22V14M16 16.9C16 17.4 15.6 17.9 15 17.9H12C10.9 17.9 10 17 10 15.9V9.9C10 8.8 10.9 7.9 12 7.9H14V5H16V16.9M14 15.9V9.9H12V15.9H14Z",
-    "name": "xda"
-  },
-  {
-    "path": "M4.8,3C3.8,3 3,3.8 3,4.8V19.2C3,20.2 3.8,21 4.8,21H19.2C20.2,21 21,20.2 21,19.2V4.8C21,3.8 20.2,3 19.2,3M16.07,5H18.11C18.23,5 18.33,5.04 18.37,5.13C18.43,5.22 18.43,5.33 18.37,5.44L13.9,13.36L16.75,18.56C16.81,18.67 16.81,18.78 16.75,18.87C16.7,18.95 16.61,19 16.5,19H14.47C14.16,19 14,18.79 13.91,18.61L11.04,13.35C11.18,13.1 15.53,5.39 15.53,5.39C15.64,5.19 15.77,5 16.07,5M7.09,7.76H9.1C9.41,7.76 9.57,7.96 9.67,8.15L11.06,10.57C10.97,10.71 8.88,14.42 8.88,14.42C8.77,14.61 8.63,14.81 8.32,14.81H6.3C6.18,14.81 6.09,14.76 6.04,14.67C6,14.59 6,14.47 6.04,14.36L8.18,10.57L6.82,8.2C6.77,8.09 6.75,8 6.81,7.89C6.86,7.81 6.96,7.76 7.09,7.76Z",
-    "name": "xing-box"
-  },
-  {
-    "path": "M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M15.85,6H17.74C17.86,6 17.94,6.04 18,6.12C18.04,6.2 18.04,6.3 18,6.41L13.84,13.76L16.5,18.59C16.53,18.69 16.53,18.8 16.5,18.88C16.43,18.96 16.35,19 16.24,19H14.36C14.07,19 13.93,18.81 13.84,18.64L11.17,13.76C11.31,13.5 15.35,6.36 15.35,6.36C15.45,6.18 15.57,6 15.85,6M7.5,8.57H9.39C9.67,8.57 9.81,8.75 9.9,8.92L11.19,11.17C11.12,11.3 9.17,14.75 9.17,14.75C9.07,14.92 8.94,15.11 8.66,15.11H6.78C6.67,15.11 6.59,15.06 6.54,15C6.5,14.9 6.5,14.8 6.54,14.69L8.53,11.17L7.27,9C7.21,8.87 7.2,8.77 7.25,8.69C7.3,8.61 7.39,8.57 7.5,8.57Z",
-    "name": "xing-circle"
-  },
-  {
-    "path": "M10.59,2C11.23,2 11.5,2.27 11.58,2.97L11.79,6.14L12.03,10.29C12.05,10.64 12,11 11.86,11.32C11.64,11.77 11.14,11.89 10.73,11.58C10.5,11.39 10.31,11.14 10.15,10.87L6.42,4.55C6.06,3.94 6.17,3.54 6.77,3.16C7.5,2.68 9.73,2 10.59,2M14.83,14.85L15.09,14.91L18.95,16.31C19.61,16.55 19.79,16.92 19.5,17.57C19.06,18.7 18.34,19.66 17.42,20.45C16.96,20.85 16.5,20.78 16.21,20.28L13.94,16.32C13.55,15.61 14.03,14.8 14.83,14.85M4.5,14C4.5,13.26 4.5,12.55 4.75,11.87C4.97,11.2 5.33,11 6,11.27L9.63,12.81C10.09,13 10.35,13.32 10.33,13.84C10.3,14.36 9.97,14.58 9.53,14.73L5.85,15.94C5.15,16.17 4.79,15.96 4.64,15.25C4.55,14.83 4.47,14.4 4.5,14M11.97,21C11.95,21.81 11.6,22.12 10.81,22C9.77,21.8 8.81,21.4 7.96,20.76C7.54,20.44 7.45,19.95 7.76,19.53L10.47,15.97C10.7,15.67 11.03,15.6 11.39,15.74C11.77,15.88 11.97,16.18 11.97,16.59V21M14.45,13.32C13.73,13.33 13.23,12.5 13.64,11.91C14.47,10.67 15.35,9.46 16.23,8.26C16.5,7.85 16.94,7.82 17.31,8.16C18.24,9 18.91,10 19.29,11.22C19.43,11.67 19.25,12.08 18.83,12.2L15.09,13.17L14.45,13.32Z",
-    "name": "yelp"
-  }
-]
+[]
@@ -1,5 +1,3 @@
-const path = require("path");
-
 module.exports = function (userOptions = {}) {
  // Files need to be absolute paths.
  // This only works if the file has no exports
@@ -81,13 +81,13 @@ module.exports = function (opts = {}) {
        opts.workerRegexp.flags
      );
      if (!workerRegexp.test(code)) {
-        return;
+        return undefined;
      }

      const ms = new MagicString(code);
      // Reset the regexp
      workerRegexp.lastIndex = 0;
-      while (true) {
+      for (;;) {
        const match = workerRegexp.exec(code);
        if (!match) {
          break;
@@ -98,11 +98,12 @@ module.exports = function (opts = {}) {
        // 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 (!new RegExp("^.*/").test(workerFile)) {
+        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}".`
          );
@@ -110,12 +111,14 @@ module.exports = function (opts = {}) {
        }

        // 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
@@ -0,0 +1,146 @@
+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,
+};
@@ -1,151 +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");
-const worker = require("./rollup-plugins/worker-plugin");
-const dontHashPlugin = require("./rollup-plugins/dont-hash-plugin");
-const ignore = require("./rollup-plugins/ignore-plugin");
-
-const bundle = require("./bundle");
-const paths = require("./paths");
-
-const extensions = [".js", ".ts"];
-
-/**
- * @param {Object} arg
- * @param { import("rollup").InputOption } arg.input
- */
-const createRollupConfig = ({
-  entry,
-  outputPath,
-  defineOverlay,
-  isProdBuild,
-  latestBuild,
-  isStatsBuild,
-  publicPath,
-  dontHash,
-}) => {
-  return {
-    /**
-     * @type { import("rollup").InputOptions }
-     */
-    inputOptions: {
-      input: entry,
-      // Some entry points contain no JavaScript. This setting silences a warning about that.
-      // https://rollupjs.org/guide/en/#preserveentrysignatures
-      preserveEntrySignatures: false,
-      plugins: [
-        ignore({
-          files: bundle.emptyPackages({ latestBuild }),
-        }),
-        resolve({
-          extensions,
-          preferBuiltins: false,
-          browser: true,
-          rootDir: paths.polymer_dir,
-        }),
-        commonjs({
-          namedExports: {
-            "js-yaml": ["safeDump", "safeLoad"],
-          },
-        }),
-        json(),
-        babel({
-          ...bundle.babelOptions({ latestBuild }),
-          extensions,
-          exclude: bundle.babelExclude(),
-        }),
-        string({
-          // Import certain extensions as strings
-          include: [path.join(paths.polymer_dir, "node_modules/**/*.css")],
-        }),
-        replace(
-          bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
-        ),
-        manifest({
-          publicPath,
-        }),
-        worker(),
-        dontHashPlugin({ dontHash }),
-        isProdBuild && terser(bundle.terserOptions(latestBuild)),
-        isStatsBuild &&
-          visualizer({
-            // https://github.com/btd/rollup-plugin-visualizer#options
-            open: true,
-            sourcemap: true,
-          }),
-      ],
-    },
-    /**
-     * @type { import("rollup").OutputOptions }
-     */
-    outputOptions: {
-      // https://rollupjs.org/guide/en/#outputdir
-      dir: outputPath,
-      // https://rollupjs.org/guide/en/#outputformat
-      format: latestBuild ? "es" : "systemjs",
-      // https://rollupjs.org/guide/en/#outputexternallivebindings
-      externalLiveBindings: false,
-      // https://rollupjs.org/guide/en/#outputentryfilenames
-      // https://rollupjs.org/guide/en/#outputchunkfilenames
-      // https://rollupjs.org/guide/en/#outputassetfilenames
-      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/guide/en/#outputsourcemap
-      sourcemap: isProdBuild ? true : "inline",
-    },
-  };
-};
-
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createRollupConfig(
-    bundle.config.app({
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-    })
-  );
-};
-
-const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createRollupConfig(
-    bundle.config.demo({
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-    })
-  );
-};
-
-const createCastConfig = ({ isProdBuild, latestBuild }) => {
-  return createRollupConfig(bundle.config.cast({ isProdBuild, latestBuild }));
-};
-
-const createHassioConfig = ({ isProdBuild, latestBuild }) => {
-  return createRollupConfig(bundle.config.hassio({ isProdBuild, latestBuild }));
-};
-
-const createGalleryConfig = ({ isProdBuild, latestBuild }) => {
-  return createRollupConfig(
-    bundle.config.gallery({ isProdBuild, latestBuild })
-  );
-};
-
-module.exports = {
-  createAppConfig,
-  createDemoConfig,
-  createCastConfig,
-  createHassioConfig,
-  createGalleryConfig,
-};
@@ -0,0 +1,280 @@
+const { existsSync } = require("fs");
+const path = require("path");
+const webpack = require("webpack");
+const { StatsWriterPlugin } = require("webpack-stats-plugin");
+const filterStats = require("@bundle-stats/plugin-webpack-filter").default;
+const TerserPlugin = require("terser-webpack-plugin");
+const { WebpackManifestPlugin } = require("webpack-manifest-plugin");
+const log = require("fancy-log");
+const WebpackBar = require("webpackbar");
+const paths = require("./paths.cjs");
+const bundle = require("./bundle.cjs");
+
+class LogStartCompilePlugin {
+  ignoredFirst = false;
+
+  apply(compiler) {
+    compiler.hooks.beforeCompile.tap("LogStartCompilePlugin", () => {
+      if (!this.ignoredFirst) {
+        this.ignoredFirst = true;
+        return;
+      }
+      log("Changes detected. Starting compilation");
+    });
+  }
+}
+
+const createWebpackConfig = ({
+  name,
+  entry,
+  outputPath,
+  publicPath,
+  defineOverlay,
+  isProdBuild,
+  latestBuild,
+  isStatsBuild,
+  isTestBuild,
+  isHassioBuild,
+  dontHash,
+}) => {
+  if (!dontHash) {
+    dontHash = new Set();
+  }
+  const ignorePackages = bundle.ignorePackages({ latestBuild });
+  return {
+    name,
+    mode: isProdBuild ? "production" : "development",
+    target: `browserslist:${latestBuild ? "modern" : "legacy"}`,
+    // For tests/CI, source maps are skipped to gain build speed
+    // For production, generate source maps for accurate stack traces without source code
+    // For development, generate "cheap" versions that can map to original line numbers
+    devtool: isTestBuild
+      ? false
+      : isProdBuild
+        ? "nosources-source-map"
+        : "eval-cheap-module-source-map",
+    entry,
+    node: false,
+    module: {
+      rules: [
+        {
+          test: /\.m?js$|\.ts$/,
+          use: {
+            loader: "babel-loader",
+            options: {
+              ...bundle.babelOptions({ latestBuild, isProdBuild, isTestBuild }),
+              cacheDirectory: !isProdBuild,
+              cacheCompression: false,
+            },
+          },
+          resolve: {
+            fullySpecified: false,
+          },
+        },
+        {
+          test: /\.css$/,
+          type: "asset/source",
+        },
+      ],
+    },
+    optimization: {
+      minimizer: [
+        new TerserPlugin({
+          parallel: true,
+          extractComments: true,
+          terserOptions: bundle.terserOptions({ latestBuild, isTestBuild }),
+        }),
+      ],
+      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,
+      },
+    },
+    plugins: [
+      !isStatsBuild && new WebpackBar({ fancy: !isProdBuild }),
+      new WebpackManifestPlugin({
+        // Only include the JS of entrypoints
+        filter: (file) => file.isInitial && !file.name.endsWith(".map"),
+      }),
+      new webpack.DefinePlugin(
+        bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
+      ),
+      new webpack.IgnorePlugin({
+        checkResource(resource, context) {
+          // Only use ignore to intercept imports that we don't control
+          // inside node_module dependencies.
+          if (
+            !context.includes("/node_modules/") ||
+            // calling define.amd will call require("!!webpack amd options")
+            resource.startsWith("!!webpack") ||
+            // loaded by webpack dev server but doesn't exist.
+            resource === "webpack/hot"
+          ) {
+            return false;
+          }
+          let fullPath;
+          try {
+            fullPath = resource.startsWith(".")
+              ? path.resolve(context, resource)
+              : require.resolve(resource);
+          } catch (err) {
+            console.error(
+              "Error in Home Assistant ignore plugin",
+              resource,
+              context
+            );
+            throw err;
+          }
+
+          return ignorePackages.some((toIgnorePath) =>
+            fullPath.startsWith(toIgnorePath)
+          );
+        },
+      }),
+      new webpack.NormalModuleReplacementPlugin(
+        new RegExp(
+          bundle.emptyPackages({ latestBuild, isHassioBuild }).join("|")
+        ),
+        path.resolve(paths.polymer_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({
+          filename: path.relative(
+            outputPath,
+            path.join(paths.build_dir, "stats", `${name}.json`)
+          ),
+          stats: { assets: true, chunks: true, modules: true },
+          transform: (stats) => JSON.stringify(filterStats(stats)),
+        }),
+    ].filter(Boolean),
+    resolve: {
+      extensions: [".ts", ".js", ".json"],
+      alias: {
+        "lit/decorators$": "lit/decorators.js",
+        "lit/directive$": "lit/directive.js",
+        "lit/directives/until$": "lit/directives/until.js",
+        "lit/directives/class-map$": "lit/directives/class-map.js",
+        "lit/directives/style-map$": "lit/directives/style-map.js",
+        "lit/directives/if-defined$": "lit/directives/if-defined.js",
+        "lit/directives/guard$": "lit/directives/guard.js",
+        "lit/directives/cache$": "lit/directives/cache.js",
+        "lit/directives/repeat$": "lit/directives/repeat.js",
+        "lit/directives/live$": "lit/directives/live.js",
+        "lit/polyfill-support$": "lit/polyfill-support.js",
+        "@lit-labs/virtualizer/layouts/grid":
+          "@lit-labs/virtualizer/layouts/grid.js",
+        "@lit-labs/virtualizer/polyfills/resize-observer-polyfill/ResizeObserver":
+          "@lit-labs/virtualizer/polyfills/resize-observer-polyfill/ResizeObserver.js",
+        "@lit-labs/observers/resize-controller":
+          "@lit-labs/observers/resize-controller.js",
+      },
+    },
+    output: {
+      module: latestBuild,
+      filename: ({ chunk }) =>
+        !isProdBuild || isStatsBuild || dontHash.has(chunk.name)
+          ? "[name].js"
+          : "[name].[contenthash].js",
+      chunkFilename:
+        isProdBuild && !isStatsBuild ? "[name].[contenthash].js" : "[name].js",
+      assetModuleFilename:
+        isProdBuild && !isStatsBuild ? "[id].[contenthash][ext]" : "[id][ext]",
+      crossOriginLoading: "use-credentials",
+      hashFunction: "xxhash64",
+      hashDigest: "base64url",
+      hashDigestLength: 11, // full length of 64 bit base64url
+      path: outputPath,
+      publicPath,
+      // To silence warning in worker plugin
+      globalObject: "self",
+      // Since production source maps don't include sources, we need to point to them elsewhere
+      // For dependencies, just provide the path (no source in browser)
+      // Otherwise, point to the raw code on GitHub for browser to load
+      ...Object.fromEntries(
+        ["", "Fallback"].map((v) => [
+          `devtool${v}ModuleFilenameTemplate`,
+          !isTestBuild && isProdBuild
+            ? (info) => {
+                if (
+                  !path.isAbsolute(info.absoluteResourcePath) ||
+                  !existsSync(info.resourcePath) ||
+                  info.resourcePath.startsWith("./node_modules")
+                ) {
+                  // Source URLs are unknown for dependencies, so we use a relative URL with a
+                  // non - existent top directory.  This results in a clean source tree in browser
+                  // dev tools, and they stay happy getting 404s with valid requests.
+                  return `/unknown${path.resolve("/", info.resourcePath)}`;
+                }
+                return new URL(info.resourcePath, bundle.sourceMapURL()).href;
+              }
+            : undefined,
+        ])
+      ),
+    },
+    experiments: {
+      outputModule: true,
+    },
+  };
+};
+
+const createAppConfig = ({
+  isProdBuild,
+  latestBuild,
+  isStatsBuild,
+  isTestBuild,
+}) =>
+  createWebpackConfig(
+    bundle.config.app({ isProdBuild, latestBuild, isStatsBuild, isTestBuild })
+  );
+
+const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
+  createWebpackConfig(
+    bundle.config.demo({ isProdBuild, latestBuild, isStatsBuild })
+  );
+
+const createCastConfig = ({ isProdBuild, latestBuild }) =>
+  createWebpackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
+
+const createHassioConfig = ({
+  isProdBuild,
+  latestBuild,
+  isStatsBuild,
+  isTestBuild,
+}) =>
+  createWebpackConfig(
+    bundle.config.hassio({
+      isProdBuild,
+      latestBuild,
+      isStatsBuild,
+      isTestBuild,
+    })
+  );
+
+const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
+  createWebpackConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
+
+module.exports = {
+  createAppConfig,
+  createDemoConfig,
+  createCastConfig,
+  createHassioConfig,
+  createGalleryConfig,
+  createWebpackConfig,
+};
@@ -1,159 +0,0 @@
-const webpack = require("webpack");
-const path = require("path");
-const TerserPlugin = require("terser-webpack-plugin");
-const ManifestPlugin = require("webpack-manifest-plugin");
-const WorkerPlugin = require("worker-plugin");
-const paths = require("./paths.js");
-const bundle = require("./bundle");
-
-const createWebpackConfig = ({
-  entry,
-  outputPath,
-  publicPath,
-  defineOverlay,
-  isProdBuild,
-  latestBuild,
-  isStatsBuild,
-  dontHash,
-}) => {
-  if (!dontHash) {
-    dontHash = new Set();
-  }
-  const ignorePackages = bundle.ignorePackages({ latestBuild });
-  return {
-    mode: isProdBuild ? "production" : "development",
-    devtool: isProdBuild
-      ? "cheap-module-source-map"
-      : "eval-cheap-module-source-map",
-    entry,
-    node: false,
-    module: {
-      rules: [
-        {
-          test: /\.js$|\.ts$/,
-          exclude: bundle.babelExclude(),
-          use: {
-            loader: "babel-loader",
-            options: bundle.babelOptions({ latestBuild }),
-          },
-        },
-        {
-          test: /\.css$/,
-          use: "raw-loader",
-        },
-      ],
-    },
-    optimization: {
-      minimizer: [
-        new TerserPlugin({
-          cache: true,
-          parallel: true,
-          extractComments: true,
-          sourceMap: true,
-          terserOptions: bundle.terserOptions(latestBuild),
-        }),
-      ],
-    },
-    plugins: [
-      new WorkerPlugin(),
-      new ManifestPlugin({
-        // Only include the JS of entrypoints
-        filter: (file) => file.isInitial && !file.name.endsWith(".map"),
-      }),
-      new webpack.DefinePlugin(
-        bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
-      ),
-      new webpack.IgnorePlugin({
-        checkResource(resource, context) {
-          // Only use ignore to intercept imports that we don't control
-          // inside node_module dependencies.
-          if (
-            !context.includes("/node_modules/") ||
-            // calling define.amd will call require("!!webpack amd options")
-            resource.startsWith("!!webpack") ||
-            // loaded by webpack dev server but doesn't exist.
-            resource === "webpack/hot"
-          ) {
-            return false;
-          }
-          let fullPath;
-          try {
-            fullPath = resource.startsWith(".")
-              ? path.resolve(context, resource)
-              : require.resolve(resource);
-          } catch (err) {
-            console.error(
-              "Error in Home Assistant ignore plugin",
-              resource,
-              context
-            );
-            throw err;
-          }
-
-          return ignorePackages.some((toIgnorePath) =>
-            fullPath.startsWith(toIgnorePath)
-          );
-        },
-      }),
-      new webpack.NormalModuleReplacementPlugin(
-        new RegExp(bundle.emptyPackages({ latestBuild }).join("|")),
-        path.resolve(paths.polymer_dir, "src/util/empty.js")
-      ),
-    ],
-    resolve: {
-      extensions: [".ts", ".js", ".json"],
-    },
-    output: {
-      filename: ({ chunk }) => {
-        if (!isProdBuild || dontHash.has(chunk.name)) {
-          return `${chunk.name}.js`;
-        }
-        return `${chunk.name}.${chunk.hash.substr(0, 8)}.js`;
-      },
-      chunkFilename:
-        isProdBuild && !isStatsBuild
-          ? "chunk.[chunkhash].js"
-          : "[name].chunk.js",
-      path: outputPath,
-      publicPath,
-      // To silence warning in worker plugin
-      globalObject: "self",
-    },
-  };
-};
-
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createWebpackConfig(
-    bundle.config.app({ isProdBuild, latestBuild, isStatsBuild })
-  );
-};
-
-const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createWebpackConfig(
-    bundle.config.demo({ isProdBuild, latestBuild, isStatsBuild })
-  );
-};
-
-const createCastConfig = ({ isProdBuild, latestBuild }) => {
-  return createWebpackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
-};
-
-const createHassioConfig = ({ isProdBuild, latestBuild }) => {
-  return createWebpackConfig(
-    bundle.config.hassio({ isProdBuild, latestBuild })
-  );
-};
-
-const createGalleryConfig = ({ isProdBuild, latestBuild }) => {
-  return createWebpackConfig(
-    bundle.config.gallery({ isProdBuild, latestBuild })
-  );
-};
-
-module.exports = {
-  createAppConfig,
-  createDemoConfig,
-  createCastConfig,
-  createHassioConfig,
-  createGalleryConfig,
-};
@@ -0,0 +1,9 @@
+# These redirects are handled by Netlify
+#
+
+# Some custom cards are not prefixing the instance URL when fetching data
+# and can end up fetching the data from the Cast domain instead of HA.
+# This will make sure that some common ones are replaced with a placeholder.
+/api/camera_proxy/* /images/google-nest-hub.png
+/api/camera_proxy_stream/* /images/google-nest-hub.png
+/api/media_player_proxy/* /images/google-nest-hub.png
@@ -1,3 +1,3 @@
-self.addEventListener("fetch", function(event) {
+self.addEventListener("fetch", (event) => {
  event.respondWith(fetch(event.request));
 });
@@ -1,5 +1,5 @@
-const rollup = require("../build-scripts/rollup.js");
-const env = require("../build-scripts/env.js");
+import rollup from "../build-scripts/rollup.cjs";
+import env from "../build-scripts/env.cjs";

 const config = rollup.createCastConfig({
  isProdBuild: env.isProdBuild(),
@@ -7,4 +7,4 @@ const config = rollup.createCastConfig({
  isStatsBuild: env.isStatsBuild(),
 });

-module.exports = { ...config.inputOptions, output: config.outputOptions };
+export default { ...config.inputOptions, output: config.outputOptions };
@@ -0,0 +1,24 @@
+<meta property="fb:app_id" content="338291289691179" />
+<meta property="og:title" content="Home Assistant Cast" />
+<meta property="og:site_name" content="Home Assistant Cast" />
+<meta property="og:url" content="https://cast.home-assistant.io/" />
+<meta property="og:type" content="website" />
+<meta
+  property="og:description"
+  content="Show Home Assistant on your Chromecast or Google Assistant devices with a screen."
+/>
+<meta
+  property="og:image"
+  content="https://cast.home-assistant.io/images/google-nest-hub.png"
+/>
+<meta name="twitter:card" content="summary_large_image" />
+<meta name="twitter:site" content="@home_assistant" />
+<meta name="twitter:title" content="Home Assistant Cast" />
+<meta
+  name="twitter:description"
+  content="Show Home Assistant on your Chromecast or Google Assistant devices with a screen."
+/>
+<meta
+  name="twitter:image"
+  content="https://cast.home-assistant.io/images/google-nest-hub.png"
+/>
@@ -3,7 +3,7 @@
  <head>
    <title>Home Assistant Cast - FAQ</title>
    <link rel="icon" href="/images/ha-cast-icon.png" type="image/png" />
-    <%= renderTemplate('_style_base') %>
+    <%= renderTemplate("../../../src/html/_style_base.html.template") %>
    <style>
      body {
        background-color: #e5e5e5;
@@ -35,25 +35,14 @@
    />
  </head>
  <body>
-    <%= renderTemplate('_js_base') %>
-
+    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
    <script>
-      import("<%= latestLauncherJS %>");
+      <% for (const entry of latestEntryJS) { %>
+        import("<%= entry %>");
+      <% } %>
      window.latestJS = true;
    </script>
-
-    <script>
-      if (!window.latestJS) {
-        <% if (useRollup) { %>
-          _ls("/static/js/s.min.js").onload = function() {
-            System.import("<%= es5LauncherJS %>");
-          };
-        <% } else { %>
-          _ls("<%= es5LauncherJS %>");
-        <% } %>
-      }
-    </script>
-
+    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
    <hc-layout subtitle="FAQ">
      <style>
        a {
@@ -139,7 +128,7 @@
          Your authentication credentials or Home Assistant url are never sent
          to the Cloud. You can validate this behavior in
          <a
-            href="https://github.com/home-assistant/home-assistant-polymer/tree/dev/cast"
+            href="https://github.com/home-assistant/frontend/tree/dev/cast"
            target="_blank"
            >the source code</a
          >.
@@ -212,13 +201,8 @@
          Chromecast is a technology developed by Google, and is available on:
        </p>
        <ul>
-          <li>Google Chrome (all platforms except on iOS)</li>
-          <li>
-            Microsoft Edge (all platforms,
-            <a href="https://www.microsoftedgeinsider.com" target="_blank"
-              >dev and canary builds only</a
-            >)
-          </li>
+          <li>Google Chrome (all platforms except iOS)</li>
+          <li>Microsoft Edge (all platforms except iOS)</li>
        </ul>
      </div>

@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Home Assistant Cast</title>
+    <link rel="manifest" href="/manifest.json" />
+    <link rel="icon" href="/images/ha-cast-icon.png" type="image/png" />
+    <%= renderTemplate("../../../src/html/_style_base.html.template") %>
+    <style>
+      body {
+        background-color: #e5e5e5;
+      }
+    </style>
+    <%= 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") %>
+    <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),
+    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
+
+    ga('create', 'UA-57927901-9', 'auto');
+    ga('send', 'pageview', location.pathname.includes("auth_callback") === -1 ? location.pathname : "/");
+    </script>
+  </body>
+</html>
@@ -1,57 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>Home Assistant Cast</title>
-    <link rel="manifest" href="/manifest.json" />
-    <link rel="icon" href="/images/ha-cast-icon.png" type="image/png" />
-    <%= renderTemplate('_style_base') %>
-    <style>
-      body {
-        background-color: #e5e5e5;
-      }
-    </style>
-    <meta property="fb:app_id" content="338291289691179">
-    <meta property="og:title" content="Home Assistant Cast">
-    <meta property="og:site_name" content="Home Assistant Cast">
-    <meta property="og:url" content="https://cast.home-assistant.io/">
-    <meta property="og:type" content="website">
-    <meta property="og:description" content="Show Home Assistant on your Chromecast or Google Assistant devices with a screen.">
-    <meta property="og:image" content="https://cast.home-assistant.io/images/google-nest-hub.png">
-    <meta name="twitter:card" content="summary_large_image">
-    <meta name="twitter:site" content="@home_assistant">
-    <meta name="twitter:title" content="Home Assistant Cast">
-    <meta name="twitter:description" content="Show Home Assistant on your Chromecast or Google Assistant devices with a screen.">
-    <meta name="twitter:image" content="https://cast.home-assistant.io/images/google-nest-hub.png">
-  </head>
-  <body>
-    <%= renderTemplate('_js_base') %>
-
-    <hc-connect></hc-connect>
-
-    <script>
-      import("<%= latestLauncherJS %>");
-      window.latestJS = true;
-    </script>
-
-    <script>
-      if (!window.latestJS) {
-        <% if (useRollup) { %>
-          _ls("/static/js/s.min.js").onload = function() {
-            System.import("<%= es5LauncherJS %>");
-          };
-        <% } else { %>
-          _ls("<%= es5LauncherJS %>");
-        <% } %>
-      }
-    </script>
-    <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),
-    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
-
-    ga('create', 'UA-57927901-9', 'auto');
-    ga('send', 'pageview', location.pathname.includes("auth_callback") === -1 ? location.pathname : "/");
-    </script>
-  </body>
-</html>
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src="//www.gstatic.com/cast/sdk/libs/caf_receiver/v3/cast_receiver_framework.js"></script>
+    <style>
+      body {
+        --logo-image: url('https://www.home-assistant.io/images/home-assistant-logo.svg');
+        --logo-repeat: no-repeat;
+        --playback-logo-image: url('https://www.home-assistant.io/images/home-assistant-logo.svg');
+        --theme-hue: 200;
+        --progress-color: #03a9f4;
+        --splash-image: url('https://home-assistant.io/images/cast/splash.png');
+        --splash-size: cover;
+        --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") %>
+  </body>
+</html>
@@ -1,8 +1,10 @@
 <!DOCTYPE html>
 <html>
  <script src="//www.gstatic.com/cast/sdk/libs/caf_receiver/v3/cast_receiver_framework.js"></script>
-  <script type="module" src="<%= latestReceiverJS %>"></script>
-  <%= renderTemplate('_style_base') %>
+  <% for (const entry of latestEntryJS) { %>
+    <script type="module" src="<%= entry %>"></script>
+  <% } %>
+  <%= renderTemplate("../../../src/html/_style_base.html.template") %>
  <style>
    body {
      background-color: white;
@@ -1,3 +1,4 @@
-import "../../../src/resources/ha-style";
-import "../../../src/resources/roboto";
+import "../../../src/resources/safari-14-attachshadow-patch";
 import "./layout/hc-connect";
+
+import("../../../src/resources/ha-style");
@@ -1,16 +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 {
-  css,
-  CSSResult,
-  customElement,
-  html,
-  LitElement,
-  property,
-  internalProperty,
-  TemplateResult,
-} from "lit-element";
+import { CSSResultGroup, LitElement, TemplateResult, css, html } from "lit";
+import { customElement, property, state } from "lit/decorators";
 import { CastManager } from "../../../../src/cast/cast_manager";
 import {
  castSendShowLovelaceView,
@@ -24,15 +18,16 @@ import {
 import { atLeastVersion } from "../../../../src/common/config/version";
 import { toggleAttribute } from "../../../../src/common/dom/toggle_attribute";
 import "../../../../src/components/ha-icon";
+import "../../../../src/components/ha-svg-icon";
 import {
  getLegacyLovelaceCollection,
  getLovelaceCollection,
-  LovelaceConfig,
 } from "../../../../src/data/lovelace";
+import { isStrategyDashboard } from "../../../../src/data/lovelace/config/types";
+import { 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";
-import "@material/mwc-button/mwc-button";

@customElement("hc-cast")
 class HcCast extends LitElement {
@@ -42,21 +37,19 @@ class HcCast extends LitElement {

  @property() public castManager!: CastManager;

-  @internalProperty() private askWrite = false;
+  @state() private askWrite = false;

-  @internalProperty() private lovelaceConfig?: LovelaceConfig | null;
+  @state() private lovelaceViews?: LovelaceViewConfig[] | null;

  protected render(): TemplateResult {
-    if (this.lovelaceConfig === undefined) {
-      return html` <hass-loading-screen no-toolbar></hass-loading-screen>> `;
+    if (this.lovelaceViews === undefined) {
+      return html`<hass-loading-screen no-toolbar></hass-loading-screen>`;
    }

    const error =
      this.castManager.castState === "NO_DEVICES_AVAILABLE"
        ? html`
-            <p>
-              There were no suitable Chromecast devices to cast to found.
-            </p>
+            <p>There were no suitable Chromecast devices to cast to found.</p>
          `
        : undefined;

@@ -80,48 +73,49 @@ class HcCast extends LitElement {
        ${error
          ? html` <div class="card-content">${error}</div> `
          : !this.castManager.status
-          ? html`
-              <p class="center-item">
-                <mwc-button raised @click=${this._handleLaunch}>
-                  <ha-icon icon="hass:cast"></ha-icon>
-                  Start Casting
-                </mwc-button>
-              </p>
-            `
-          : html`
-              <div class="section-header">PICK A VIEW</div>
-              <paper-listbox
-                attr-for-selected="data-path"
-                .selected=${this.castManager.status.lovelacePath || ""}
-              >
-                ${(this.lovelaceConfig
-                  ? this.lovelaceConfig.views
-                  : [generateDefaultViewConfig([], [], [], {}, () => "")]
-                ).map(
-                  (view, idx) => html`
-                    <paper-icon-item
-                      @click=${this._handlePickView}
-                      data-path=${view.path || idx}
-                    >
-                      ${view.icon
-                        ? html`
-                            <ha-icon
-                              .icon=${view.icon}
-                              slot="item-icon"
-                            ></ha-icon>
-                          `
-                        : ""}
-                      ${view.title || view.path}
-                    </paper-icon-item>
-                  `
-                )}
-              </paper-listbox>
-            `}
+            ? html`
+                <p class="center-item">
+                  <mwc-button raised @click=${this._handleLaunch}>
+                    <ha-svg-icon .path=${mdiCast}></ha-svg-icon>
+                    Start Casting
+                  </mwc-button>
+                </p>
+              `
+            : html`
+                <div class="section-header">PICK A VIEW</div>
+                <paper-listbox
+                  attr-for-selected="data-path"
+                  .selected=${this.castManager.status.lovelacePath || ""}
+                >
+                  ${(
+                    this.lovelaceViews ?? [
+                      generateDefaultViewConfig({}, {}, {}, {}, () => ""),
+                    ]
+                  ).map(
+                    (view, idx) => html`
+                      <paper-icon-item
+                        @click=${this._handlePickView}
+                        data-path=${view.path || idx}
+                      >
+                        ${view.icon
+                          ? html`
+                              <ha-icon
+                                .icon=${view.icon}
+                                slot="item-icon"
+                              ></ha-icon>
+                            `
+                          : ""}
+                        ${view.title || view.path}
+                      </paper-icon-item>
+                    `
+                  )}
+                </paper-listbox>
+              `}
        <div class="card-actions">
          ${this.castManager.status
            ? html`
                <mwc-button @click=${this._handleLaunch}>
-                  <ha-icon icon="hass:cast-connected"></ha-icon>
+                  <ha-svg-icon .path=${mdiCastConnected}></ha-svg-icon>
                  Manage
                </mwc-button>
              `
@@ -144,11 +138,15 @@ class HcCast extends LitElement {
    llColl.refresh().then(
      () => {
        llColl.subscribe((config) => {
-          this.lovelaceConfig = config;
+          if (isStrategyDashboard(config)) {
+            this.lovelaceViews = null;
+          } else {
+            this.lovelaceViews = config.views;
+          }
        });
      },
      async () => {
-        this.lovelaceConfig = null;
+        this.lovelaceViews = null;
      }
    );

@@ -167,9 +165,7 @@ class HcCast extends LitElement {
    toggleAttribute(
      this,
      "hide-icons",
-      this.lovelaceConfig
-        ? !this.lovelaceConfig.views.some((view) => view.icon)
-        : true
+      this.lovelaceViews ? !this.lovelaceViews.some((view) => view.icon) : true
    );
  }

@@ -189,7 +185,7 @@ class HcCast extends LitElement {
  private async _handlePickView(ev: Event) {
    const path = (ev.currentTarget as any).getAttribute("data-path");
    await ensureConnectedCastSession(this.castManager!, this.auth!);
-    castSendShowLovelaceView(this.castManager, path);
+    castSendShowLovelaceView(this.castManager, this.auth.data.hassUrl, path);
  }

  private async _handleLogout() {
@@ -201,12 +197,12 @@ class HcCast extends LitElement {
      }
      this.connection.close();
      location.reload();
-    } catch (err) {
+    } catch (err: any) {
      alert("Unable to log out!");
    }
  }

-  static get styles(): CSSResult {
+  static get styles(): CSSResultGroup {
    return css`
      .center-item {
        display: flex;
@@ -243,7 +239,7 @@ class HcCast extends LitElement {
        color: var(--secondary-text-color);
      }

-      mwc-button ha-icon {
+      mwc-button ha-svg-icon {
        margin-right: 8px;
        height: 18px;
      }
--- a/Show More
+++ b/Show More