Adjust WebSocket ping timeout to 15 seconds

5 seconds was too low to prevent the UI from reloading when connecting the WebSocket during startup or on a high latancy connection This problem presented as the UI reloading over and over again because it could never respond to the ping in time on high latancy connections. At startup it usually only did this once so it went unnoticed in most cases. This ping was added in #18934
Reduce size of address column on Bluetooth Advertisement monitor
2026-05-19 15:47:05 +00:00 · 2025-02-20 11:46:59 -06:00 · 2025-01-29 12:51:56 -06:00 · 2025-01-29 16:46:26 +01:00 · 2025-01-29 16:38:25 +01:00 · 2025-01-29 15:31:55 +00:00
2134 changed files with 112575 additions and 60803 deletions
@@ -1,39 +1,36 @@
 [modern]
-# Support for dynamic import is the main litmus test for serving modern builds.
-# Although officially a ES2020 feature, browsers implemented it early, so this
-# enables all of ES2017 and some features in ES2018.
-supports es6-module-dynamic-import
-
-# Exclude Safari 11-12 because of a bug in tagged template literals
-# https://bugs.webkit.org/show_bug.cgi?id=190756
-# Note: Dropping version 11 also enables several more ES2018 features
-not Safari < 13
-not iOS < 13
-
-# Exclude KaiOS, QQ, and UC browsers due to lack of sufficient feature support data
-# Babel ignores these automatically, but we need here for Webpack to output ESM with dynamic imports
+# Modern builds target recent browsers supporting the latest features to minimize transpilation, polyfills, etc.
+# It is served to browsers meeting the following requirements:
+# - released in the last year + current alpha/beta versions
+# - Firefox extended support release (ESR)
+# - with global utilization at or above 0.5%
+# - exclude dead browsers (no security maintenance for 2+ years)
+# - exclude KaiOS, QQ, and UC browsers due to lack of sufficient feature support data
+unreleased versions
+last 1 year
+Firefox ESR
+>= 0.5%
+not dead
 not KaiOS > 0
 not QQAndroid > 0
 not UCAndroid > 0

-# Exclude unsupported browsers
-not dead
-
 [legacy]
 # Legacy builds are served when modern requirements are not met and support browsers:
 # - released in the last 7 years + current alpha/beta versionss
-# - with global utilization above 0.05%
-# The lattermost query ensures that support for popular old browsers is not dropped too early
-# (e.g. IE 11, Android 4.4, or Samsung 4).
-#
-# In addition, legacy browsers must support some minimum features that cannot be polyfilled:
-# - ES5 (strict mode)
-# - web sockets to communicate with backend
-# - inline SVG used widely in buttons, widgets, etc.
-# - custom events used for most user interactions
-# - CSS flexbox used in the majority of the layout
-# Nearly all of these are redundant with the above rules.
-# As of May 2023, only web sockets must be added to the query.
+# - with global utilization at or above 0.05%
+# - exclude dead browsers (no security maintenance for 2+ years)
+# - exclude Opera Mini which does not support web sockets
 unreleased versions
 last 7 years
-> 0.05% and supports websockets
+>= 0.05%
+not dead
+not op_mini all
+
+[legacy-sw]
+# Same as legacy plus supports service workers
+unreleased versions
+last 7 years
+>= 0.05% and supports serviceworkers
+not dead
+not op_mini all
@@ -1,5 +1,4 @@
-# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.148.1/containers/python-3/.devcontainer/base.Dockerfile
-FROM mcr.microsoft.com/vscode/devcontainers/python:0-3.11
+FROM mcr.microsoft.com/devcontainers/python:1-3.13

 ENV \
  DEBIAN_FRONTEND=noninteractive \
@@ -8,6 +8,7 @@
  "postCreateCommand": "sudo apt update && sudo apt upgrade -y && sudo apt install -y libpcap-dev",
  "postStartCommand": "script/bootstrap",
  "containerEnv": {
+    "DEV_CONTAINER": "1",
    "WORKSPACE_DIRECTORY": "${containerWorkspaceFolder}"
  },
  "customizations": {
@@ -1,130 +0,0 @@
-{
-  "extends": [
-    "airbnb-base",
-    "airbnb-typescript/base",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:wc/recommended",
-    "plugin:lit/all",
-    "plugin:lit-a11y/recommended",
-    "prettier"
-  ],
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "ecmaVersion": 2020,
-    "ecmaFeatures": {
-      "modules": true
-    },
-    "sourceType": "module",
-    "project": "./tsconfig.json"
-  },
-  "settings": {
-    "import/resolver": {
-      "webpack": {
-        "config": "./webpack.config.cjs"
-      }
-    }
-  },
-  "globals": {
-    "__DEV__": false,
-    "__DEMO__": false,
-    "__BUILD__": false,
-    "__VERSION__": false,
-    "__STATIC_PATH__": false,
-    "__SUPERVISOR__": false,
-    "Polymer": true
-  },
-  "env": {
-    "browser": true,
-    "es6": true
-  },
-  "rules": {
-    "class-methods-use-this": "off",
-    "new-cap": "off",
-    "prefer-template": "off",
-    "object-shorthand": "off",
-    "func-names": "off",
-    "no-underscore-dangle": "off",
-    "strict": "off",
-    "no-plusplus": "off",
-    "no-bitwise": "error",
-    "comma-dangle": "off",
-    "vars-on-top": "off",
-    "no-continue": "off",
-    "no-param-reassign": "off",
-    "no-multi-assign": "off",
-    "no-console": "error",
-    "radix": "off",
-    "no-alert": "off",
-    "no-nested-ternary": "off",
-    "prefer-destructuring": "off",
-    "no-restricted-globals": [2, "event"],
-    "prefer-promise-reject-errors": "off",
-    "import/prefer-default-export": "off",
-    "import/no-default-export": "off",
-    "import/no-unresolved": "off",
-    "import/no-cycle": "off",
-    "import/extensions": [
-      "error",
-      "ignorePackages",
-      {
-        "ts": "never",
-        "js": "never"
-      }
-    ],
-    "no-restricted-syntax": ["error", "LabeledStatement", "WithStatement"],
-    "object-curly-newline": "off",
-    "default-case": "off",
-    "wc/no-self-class": "off",
-    "no-shadow": "off",
-    "@typescript-eslint/camelcase": "off",
-    "@typescript-eslint/ban-ts-comment": "off",
-    "@typescript-eslint/no-use-before-define": "off",
-    "@typescript-eslint/no-non-null-assertion": "off",
-    "@typescript-eslint/no-explicit-any": "off",
-    "@typescript-eslint/explicit-function-return-type": "off",
-    "@typescript-eslint/explicit-module-boundary-types": "off",
-    "@typescript-eslint/no-shadow": ["error"],
-    "@typescript-eslint/naming-convention": [
-      "off",
-      {
-        "selector": "default",
-        "format": ["camelCase", "snake_case"],
-        "leadingUnderscore": "allow",
-        "trailingUnderscore": "allow"
-      },
-      {
-        "selector": ["variable"],
-        "format": ["camelCase", "snake_case", "UPPER_CASE"],
-        "leadingUnderscore": "allow",
-        "trailingUnderscore": "allow"
-      },
-      {
-        "selector": "typeLike",
-        "format": ["PascalCase"]
-      }
-    ],
-    "@typescript-eslint/no-unused-vars": "off",
-    "unused-imports/no-unused-vars": [
-      "error",
-      {
-        "vars": "all",
-        "varsIgnorePattern": "^_",
-        "args": "after-used",
-        "argsIgnorePattern": "^_",
-        "ignoreRestSiblings": true
-      }
-    ],
-    "unused-imports/no-unused-imports": "error",
-    "lit/attribute-value-entities": "off",
-    "lit/no-template-map": "off",
-    "lit/no-native-attributes": "warn",
-    "lit/no-this-assign-in-render": "warn",
-    "lit-a11y/click-events-have-key-events": ["off"],
-    "lit-a11y/no-autofocus": "off",
-    "lit-a11y/alt-text": "warn",
-    "lit-a11y/anchor-is-valid": "warn",
-    "lit-a11y/role-has-required-aria-attrs": "warn"
-  },
-  "plugins": ["disable", "unused-imports"],
-  "processor": "disable/disable"
-}
@@ -7,7 +7,7 @@ body:
      value: |
        Make sure you are running the [latest version of Home Assistant][releases] before reporting an issue.

-        If you have a feature or enhancement request for the frontend, please [start an discussion][fr] instead of creating an issue.
+        If you have a feature or enhancement request for the frontend, please [start a discussion][fr] instead of creating an issue.

        **Please do not report issues for custom cards.**

@@ -74,7 +74,7 @@ body:
        If known, otherwise leave blank.
  - type: input
    attributes:
-      label: In which browser are you experiencing the issue with?
+      label: In which browser are you experiencing the issue?
      placeholder: Google Chrome 88.0.4324.150
      description: >
        Provide the full name and don't forget to add the version!
@@ -2,7 +2,7 @@ blank_issues_enabled: false
 contact_links:
  - name: Request a feature for the UI / Dashboards
    url: https://github.com/home-assistant/frontend/discussions/category_choices
-    about: Request an new feature for the Home Assistant frontend.
+    about: Request a new feature for the Home Assistant frontend.
  - name: Report a bug that is NOT related to the UI / Dashboards
    url: https://github.com/home-assistant/core/issues
    about: This is the issue tracker for our frontend. Please report other issues in the backend ("core") repository.
@@ -21,12 +21,12 @@ jobs:
      url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
        with:
          ref: dev

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -57,12 +57,12 @@ jobs:
      url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
        with:
          ref: master

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -24,9 +24,9 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -37,7 +37,7 @@ jobs:
      - name: Build resources
        run: ./node_modules/.bin/gulp gen-icons-json build-translations build-locale-data gather-gallery-pages
      - name: Setup lint cache
-        uses: actions/cache@v4.0.0
+        uses: actions/cache@v4.2.0
        with:
          path: |
            node_modules/.cache/prettier
@@ -58,9 +58,9 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -76,9 +76,9 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -89,7 +89,7 @@ jobs:
        env:
          IS_TEST: "true"
      - name: Upload bundle stats
-        uses: actions/upload-artifact@v4.3.1
+        uses: actions/upload-artifact@v4.6.0
        with:
          name: frontend-bundle-stats
          path: build/stats/*.json
@@ -100,9 +100,9 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -113,7 +113,7 @@ jobs:
        env:
          IS_TEST: "true"
      - name: Upload bundle stats
-        uses: actions/upload-artifact@v4.3.1
+        uses: actions/upload-artifact@v4.6.0
        with:
          name: supervisor-bundle-stats
          path: build/stats/*.json
@@ -23,7 +23,7 @@ jobs:

    steps:
      - name: Checkout repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
        with:
          # We must fetch at least the immediate parents so that if this is
          # a pull request then we can checkout the head.
@@ -22,12 +22,12 @@ jobs:
      url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
        with:
          ref: dev

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -58,12 +58,12 @@ jobs:
      url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2
        with:
          ref: master

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -16,10 +16,10 @@ jobs:
      url: ${{ steps.deploy.outputs.NETLIFY_LIVE_URL || steps.deploy.outputs.NETLIFY_URL }}
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -21,10 +21,10 @@ jobs:
    if: github.repository == 'home-assistant/frontend' && contains(github.event.pull_request.labels.*.name, 'needs design preview')
    steps:
      - name: Check out files from GitHub
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -6,7 +6,7 @@ on:
    - cron: "0 1 * * *"

 env:
-  PYTHON_VERSION: "3.11"
+  PYTHON_VERSION: "3.13"
  NODE_OPTIONS: --max_old_space_size=6144

 permissions:
@@ -20,7 +20,7 @@ jobs:
      contents: write
    steps:
      - name: Checkout the repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2

      - name: Set up Python ${{ env.PYTHON_VERSION }}
        uses: actions/setup-python@v5
@@ -28,7 +28,7 @@ jobs:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -57,14 +57,14 @@ jobs:
        run: tar -czvf translations.tar.gz translations

      - name: Upload build artifacts
-        uses: actions/upload-artifact@v4.3.1
+        uses: actions/upload-artifact@v4.6.0
        with:
          name: wheels
          path: dist/home_assistant_frontend*.whl
          if-no-files-found: error

      - name: Upload translations
-        uses: actions/upload-artifact@v4.3.1
+        uses: actions/upload-artifact@v4.6.0
        with:
          name: translations
          path: translations.tar.gz
@@ -17,7 +17,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Send bundle stats and build information to RelativeCI
-        uses: relative-ci/agent-action@v2.1.10
+        uses: relative-ci/agent-action@v2.1.14
        with:
          key: ${{ secrets[format('RELATIVE_CI_KEY_{0}_{1}', matrix.bundle, matrix.build)] }}
          token: ${{ github.token }}
@@ -18,6 +18,6 @@ jobs:
      pull-requests: read
    runs-on: ubuntu-latest
    steps:
-      - uses: release-drafter/release-drafter@v6.0.0
+      - uses: release-drafter/release-drafter@v6.1.0
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -6,7 +6,7 @@ on:
      - published

 env:
-  PYTHON_VERSION: "3.11"
+  PYTHON_VERSION: "3.13"
  NODE_OPTIONS: --max_old_space_size=6144

 # Set default workflow permissions
@@ -23,18 +23,18 @@ jobs:
      contents: write # Required to upload release assets
    steps:
      - name: Checkout the repository
-        uses: actions/checkout@v4.1.1
-
-      - name: Verify version
-        uses: home-assistant/actions/helpers/verify-version@master
+        uses: actions/checkout@v4.2.2

      - name: Set up Python ${{ env.PYTHON_VERSION }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

+      - name: Verify version
+        uses: home-assistant/actions/helpers/verify-version@master
+
      - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@v4.2.0
        with:
          node-version-file: ".nvmrc"
          cache: yarn
@@ -55,7 +55,7 @@ jobs:
          script/release

      - name: Upload release assets
-        uses: softprops/action-gh-release@v0.1.15
+        uses: softprops/action-gh-release@v2.2.1
        with:
          files: |
            dist/*.whl
@@ -74,10 +74,68 @@ jobs:
          echo "home-assistant-frontend==$version" > ./requirements.txt

      - name: Build wheels
-        uses: home-assistant/wheels@2024.01.0
+        uses: home-assistant/wheels@2024.11.0
        with:
-          abi: cp311
+          abi: cp313
          tag: musllinux_1_2
          arch: amd64
          wheels-key: ${{ secrets.WHEELS_KEY }}
          requirements: "requirements.txt"
+
+  release-landing-page:
+    name: Release landing-page frontend
+    if: github.event.release.prerelease == false
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Required to upload release assets
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.2.2
+      - name: Setup Node
+        uses: actions/setup-node@v4.2.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+      - name: Install dependencies
+        run: yarn install
+      - name: Download Translations
+        run: ./script/translations_download
+        env:
+          LOKALISE_TOKEN: ${{ secrets.LOKALISE_TOKEN }}
+      - name: Build landing-page
+        run: landing-page/script/build_landing_page
+      - name: Tar folder
+        run: tar -czf landing-page/home_assistant_frontend_landingpage-${{ github.event.release.tag_name }}.tar.gz -C landing-page/dist .
+      - name: Upload release asset
+        uses: softprops/action-gh-release@v2.2.1
+        with:
+          files: landing-page/home_assistant_frontend_landingpage-${{ github.event.release.tag_name }}.tar.gz
+
+  release-supervisor:
+    name: Release supervisor frontend
+    if: github.event.release.prerelease == false
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Required to upload release assets
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4.2.2
+      - name: Setup Node
+        uses: actions/setup-node@v4.2.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: yarn
+      - name: Install dependencies
+        run: yarn install
+      - name: Download Translations
+        run: ./script/translations_download
+        env:
+          LOKALISE_TOKEN: ${{ secrets.LOKALISE_TOKEN }}
+      - name: Build supervisor
+        run: hassio/script/build_hassio
+      - name: Tar folder
+        run: tar -czf hassio/home_assistant_frontend_supervisor-${{ github.event.release.tag_name }}.tar.gz -C hassio/build .
+      - name: Upload release asset
+        uses: softprops/action-gh-release@v2.2.1
+        with:
+          files: hassio/home_assistant_frontend_supervisor-${{ github.event.release.tag_name }}.tar.gz
@@ -10,7 +10,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: 90 days stale policy
-        uses: actions/stale@v9.0.0
+        uses: actions/stale@v9.1.0
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          days-before-stale: 90
@@ -13,7 +13,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout the repository
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.2.2

      - name: Upload Translations
        run: |
@@ -50,3 +50,6 @@ src/cast/dev_const.ts

 # Jetbrains
 /.idea/
+
+# test coverage
+test/coverage/
@@ -1,4 +1 @@
-#!/usr/bin/env sh
-. "$(dirname -- "$0")/_/husky.sh"
-
 yarn run lint-staged --relative --shell "/bin/bash"
@@ -4,6 +4,7 @@
    "esbenp.prettier-vscode",
    "runem.lit-plugin",
    "github.vscode-pull-request-github",
-    "eamodio.gitlens"
+    "eamodio.gitlens",
+    "vitest.explorer"
  ]
 }
@@ -100,6 +100,38 @@
        "instanceLimit": 1
      }
    },
+    {
+      "label": "Develop Landing Page",
+      "type": "gulp",
+      "task": "develop-landing-page",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
    {
      "label": "Develop Demo",
      "type": "gulp",
@@ -1,13 +0,0 @@
-diff --git a/simple-tooltip.js b/simple-tooltip.js
-index 78a87f6a223925f0e29fbedb268c85a142ec6985..3d686dd6a3d5a93342b4b01408089fc316b408ca 100644
--- a/simple-tooltip.js
-+++ b/simple-tooltip.js
-@@ -195,6 +195,8 @@ class SimpleTooltip extends LitElement {
-         .hidden {
-           position: absolute;
-           left: -10000px;
-+          inset-inline-start: -10000px;
-+          inset-inline-end: initial;
-           top: auto;
-           width: 1px;
-           height: 1px;
@@ -1,16 +1,7 @@
 diff --git a/modular/sortable.core.esm.js b/modular/sortable.core.esm.js
-index 93ba17509e2e8583ab241fea6845fbe714c584a2..de0651ddb5dced30d36f7d764da0dd0b441f523f 100644
+index 8b5e49b011713c8859c669069fbe85ce53974e1d..6a0afc92787157b8a31c38cc5f67dfa526090a00 100644
 --- a/modular/sortable.core.esm.js
 +++ b/modular/sortable.core.esm.js
-@@ -1461,7 +1461,7 @@ Sortable.prototype = /** @lends Sortable.prototype */{
-           }
-           target = parent; // store last element
-         }
-        /* jshint boss:true */ while (parent = parent.parentNode);
-+        /* jshint boss:true */ while (parent = parent.parentNode || parent.getRootNode().host);
-       }
-       _unhideGhostForTarget();
-     }
@@ -1781,11 +1781,16 @@ Sortable.prototype = /** @lends Sortable.prototype */{
         }
         if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, !!target) !== false) {
@@ -33,7 +24,7 @@ index 93ba17509e2e8583ab241fea6845fbe714c584a2..de0651ddb5dced30d36f7d764da0dd0b
           }
           parentEl = el; // actualization
 
-@@ -1802,7 +1807,13 @@ Sortable.prototype = /** @lends Sortable.prototype */{
+@@ -1802,7 +1807,12 @@ Sortable.prototype = /** @lends Sortable.prototype */{
         targetRect = getRect(target);
         if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, false) !== false) {
           capture();
@@ -44,11 +35,10 @@ index 93ba17509e2e8583ab241fea6845fbe714c584a2..de0651ddb5dced30d36f7d764da0dd0b
 +          catch(err) {
 +            return completed(false);
 +          }
-+          
           parentEl = el; // actualization
 
           changed();
-@@ -1849,12 +1860,17 @@ Sortable.prototype = /** @lends Sortable.prototype */{
+@@ -1849,10 +1859,15 @@ Sortable.prototype = /** @lends Sortable.prototype */{
           _silent = true;
           setTimeout(_unsilent, 30);
           capture();
@@ -56,8 +46,6 @@ index 93ba17509e2e8583ab241fea6845fbe714c584a2..de0651ddb5dced30d36f7d764da0dd0b
 -            el.appendChild(dragEl);
 -          } else {
 -            target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
-          }
- 
 +          try {
 +            if (after && !nextSibling) {
 +              el.appendChild(dragEl);
@@ -67,7 +55,6 @@ index 93ba17509e2e8583ab241fea6845fbe714c584a2..de0651ddb5dced30d36f7d764da0dd0b
 +          }
 +          catch(err) {
 +            return completed(false);
-+          }
+           }
+ 
           // Undo chrome's scroll adjustment (has no effect on other browsers)
-           if (scrolledPastTop) {
-             scrollBy(scrolledPastTop, 0, scrollBefore - scrolledPastTop.scrollTop);
@@ -0,0 +1,55 @@
+diff --git a/build/inject-manifest.js b/build/inject-manifest.js
+index 60e3d2bb51c11a19fbbedbad65e101082ec41c36..fed6026630f43f86e25446383982cf6fb694313b 100644
+--- a/build/inject-manifest.js
+++ b/build/inject-manifest.js
+@@ -104,7 +104,7 @@ async function injectManifest(config) {
+             replaceString: manifestString,
+             searchString: options.injectionPoint,
+         });
+-        filesToWrite[options.swDest] = source;
+        filesToWrite[options.swDest] = source.replace(url, encodeURI(upath_1.default.basename(destPath)));
+         filesToWrite[destPath] = map;
+     }
+     else {
+diff --git a/build/lib/translate-url-to-sourcemap-paths.js b/build/lib/translate-url-to-sourcemap-paths.js
+index 3220c5474eeac6e8a56ca9b2ac2bd9be48529e43..5f003879a904d4840529a42dd056d288fd213771 100644
+--- a/build/lib/translate-url-to-sourcemap-paths.js
+++ b/build/lib/translate-url-to-sourcemap-paths.js
+@@ -22,7 +22,7 @@ function translateURLToSourcemapPaths(url, swSrc, swDest) {
+         const possibleSrcPath = upath_1.default.resolve(upath_1.default.dirname(swSrc), url);
+         if (fs_extra_1.default.existsSync(possibleSrcPath)) {
+             srcPath = possibleSrcPath;
+-            destPath = upath_1.default.resolve(upath_1.default.dirname(swDest), url);
+            destPath = `${swDest}.map`;
+         }
+         else {
+             warning = `${errors_1.errors['cant-find-sourcemap']} ${possibleSrcPath}`;
+diff --git a/src/inject-manifest.ts b/src/inject-manifest.ts
+index 8795ddcaa77aea7b0356417e4bc4b19e2b3f860c..fcdc68342d9ac53936c9ed40a9ccfc2f5070cad3 100644
+--- a/src/inject-manifest.ts
+++ b/src/inject-manifest.ts
+@@ -129,7 +129,10 @@ export async function injectManifest(
+       searchString: options.injectionPoint!,
+     });
+ 
+-    filesToWrite[options.swDest] = source;
+    filesToWrite[options.swDest] = source.replace(
+      url!,
+      encodeURI(upath.basename(destPath)),
+    );
+     filesToWrite[destPath] = map;
+   } else {
+     // If there's no sourcemap associated with swSrc, a simple string
+diff --git a/src/lib/translate-url-to-sourcemap-paths.ts b/src/lib/translate-url-to-sourcemap-paths.ts
+index 072eac40d4ef5d095a01cb7f7e392a9e034853bd..f0bbe69e88ef3a415de18a7e9cb264daea273d71 100644
+--- a/src/lib/translate-url-to-sourcemap-paths.ts
+++ b/src/lib/translate-url-to-sourcemap-paths.ts
+@@ -28,7 +28,7 @@ export function translateURLToSourcemapPaths(
+     const possibleSrcPath = upath.resolve(upath.dirname(swSrc), url);
+     if (fse.existsSync(possibleSrcPath)) {
+       srcPath = possibleSrcPath;
+-      destPath = upath.resolve(upath.dirname(swDest), url);
+      destPath = `${swDest}.map`;
+     } else {
+       warning = `${errors['cant-find-sourcemap']} ${possibleSrcPath}`;
+     }
@@ -6,4 +6,4 @@ enableGlobalCache: false

 nodeLinker: node-modules

-yarnPath: .yarn/releases/yarn-4.1.0.cjs
+yarnPath: .yarn/releases/yarn-4.6.0.cjs
@@ -27,3 +27,5 @@ A complete guide can be found at the following [link](https://www.home-assistant
 Home Assistant is open-source and Apache 2 licensed. Feel free to browse the repository, learn and reuse parts in your own projects.

 We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variety of devices.
+
+[![Home Assistant - A project from the Open Home Foundation](https://www.openhomefoundation.org/badges/home-assistant.png)](https://www.openhomefoundation.org/)
@@ -1,12 +0,0 @@
-{
-  "extends": "../.eslintrc.json",
-  "rules": {
-    "no-console": "off",
-    "import/no-extraneous-dependencies": "off",
-    "import/extensions": "off",
-    "import/no-dynamic-require": "off",
-    "global-require": "off",
-    "@typescript-eslint/no-var-requires": "off",
-    "prefer-arrow-callback": "off"
-  }
-}
@@ -15,7 +15,7 @@ The Home Assistant build pipeline contains various steps to prepare a build.

 Currently in Home Assistant we use a bundler to convert TypeScript, CSS and JSON files to JavaScript files that the browser understands.

-We currently rely on Webpack but also have experimental Rollup support. Both of these programs bundle the converted files in both production and development.
+We currently rely on Webpack. Both of these programs bundle the converted files in both production and development.

 For development, bundling is optional. We just want to get the right files in the browser.

@@ -1,28 +1,82 @@
 import defineProvider from "@babel/helper-define-polyfill-provider";
+import { join } from "node:path";
+import paths from "../paths.cjs";
+
+const POLYFILL_DIR = join(paths.polymer_dir, "src/resources/polyfills");

 // List of polyfill keys with supported browser targets for the functionality
-const PolyfillSupport = {
-  fetch: {
-    android: 42,
-    chrome: 42,
-    edge: 14,
-    firefox: 39,
-    ios: 10.3,
-    opera: 29,
-    opera_mobile: 29,
-    safari: 10.1,
-    samsung: 4.0,
+const polyfillSupport = {
+  // Note states and shadowRoot properties should be supported.
+  "element-internals": {
+    android: 90,
+    chrome: 90,
+    edge: 90,
+    firefox: 126,
+    ios: 17.4,
+    opera: 76,
+    opera_mobile: 64,
+    safari: 17.4,
+    samsung: 15.0,
  },
-  proxy: {
-    android: 49,
-    chrome: 49,
-    edge: 12,
-    firefox: 18,
-    ios: 10.0,
-    opera: 36,
-    opera_mobile: 36,
-    safari: 10.0,
-    samsung: 5.0,
+  "element-getattributenames": {
+    android: 61,
+    chrome: 61,
+    edge: 18,
+    firefox: 45,
+    ios: 10.3,
+    opera: 48,
+    opera_mobile: 45,
+    safari: 10.1,
+    samsung: 8.0,
+  },
+  "element-toggleattribute": {
+    android: 69,
+    chrome: 69,
+    edge: 18,
+    firefox: 63,
+    ios: 12.0,
+    opera: 56,
+    opera_mobile: 48,
+    safari: 12.0,
+    samsung: 10.0,
+  },
+  // FormatJS polyfill detects fix for https://bugs.chromium.org/p/v8/issues/detail?id=10682,
+  // so adjusted to several months after that was marked fixed
+  "intl-getcanonicallocales": {
+    android: 90,
+    chrome: 90,
+    edge: 90,
+    firefox: 48,
+    ios: 10.3,
+    opera: 76,
+    opera_mobile: 64,
+    safari: 10.1,
+    samsung: 15.0,
+  },
+  "intl-locale": {
+    android: 74,
+    chrome: 74,
+    edge: 79,
+    firefox: 75,
+    ios: 14.0,
+    opera: 62,
+    opera_mobile: 53,
+    safari: 14.0,
+    samsung: 11.0,
+  },
+  "intl-other": {
+    // Not specified (i.e. always try polyfill) since compatibility depends on supported locales
+  },
+  "resize-observer": {
+    android: 64,
+    chrome: 64,
+    edge: 79,
+    firefox: 69,
+    ios: 13.4,
+    opera: 51,
+    opera_mobile: 47,
+    safari: 13.1,
+    samsung: 9.0,
  },
 };

@@ -30,11 +84,49 @@ const PolyfillSupport = {
 // corresponding polyfill key and actual module to import
 const polyfillMap = {
  global: {
-    Proxy: { key: "proxy", module: "proxy-polyfill" },
-    fetch: { key: "fetch", module: "unfetch/polyfill" },
+    ResizeObserver: {
+      key: "resize-observer",
+      module: join(POLYFILL_DIR, "resize-observer.ts"),
+    },
+  },
+  instance: {
+    attachInternals: {
+      key: "element-internals",
+      module: "element-internals-polyfill",
+    },
+    ...Object.fromEntries(
+      ["getAttributeNames", "toggleAttribute"].map((prop) => {
+        const key = `element-${prop.toLowerCase()}`;
+        return [prop, { key, module: join(POLYFILL_DIR, `${key}.ts`) }];
+      })
+    ),
+  },
+  static: {
+    Intl: {
+      getCanonicalLocales: {
+        key: "intl-getcanonicallocales",
+        module: join(POLYFILL_DIR, "intl-polyfill.ts"),
+      },
+      Locale: {
+        key: "intl-locale",
+        module: join(POLYFILL_DIR, "intl-polyfill.ts"),
+      },
+      ...Object.fromEntries(
+        [
+          "DateTimeFormat",
+          "DurationFormat",
+          "DisplayNames",
+          "ListFormat",
+          "NumberFormat",
+          "PluralRules",
+          "RelativeTimeFormat",
+        ].map((obj) => [
+          obj,
+          { key: "intl-other", module: join(POLYFILL_DIR, "intl-polyfill.ts") },
+        ])
+      ),
+    },
  },
-  instance: {},
-  static: {},
 };

 // Create plugin using the same factory as for CoreJS
@@ -42,14 +134,16 @@ export default defineProvider(
  ({ createMetaResolver, debug, shouldInjectPolyfill }) => {
    const resolvePolyfill = createMetaResolver(polyfillMap);
    return {
-      name: "HA Custom",
-      polyfills: PolyfillSupport,
+      name: "custom-polyfill",
+      polyfills: polyfillSupport,
      usageGlobal(meta, utils) {
        const polyfill = resolvePolyfill(meta);
        if (polyfill && shouldInjectPolyfill(polyfill.desc.key)) {
          debug(polyfill.desc.key);
          utils.injectGlobalImport(polyfill.desc.module);
+          return true;
        }
+        return false;
      },
    };
  }
@@ -3,6 +3,8 @@ const env = require("./env.cjs");
 const paths = require("./paths.cjs");
 const { dependencies } = require("../package.json");

+const BABEL_PLUGINS = path.join(__dirname, "babel-plugins");
+
 // GitHub base URL to use for production source maps
 // Nightly builds use the commit SHA, otherwise assumes there is a tag that matches the version
 module.exports.sourceMapURL = () => {
@@ -45,12 +47,17 @@ module.exports.emptyPackages = ({ latestBuild, isHassioBuild }) =>

 module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
  __DEV__: !isProdBuild,
-  __BUILD__: JSON.stringify(latestBuild ? "latest" : "es5"),
+  __BUILD__: JSON.stringify(latestBuild ? "modern" : "legacy"),
  __VERSION__: JSON.stringify(env.version()),
  __DEMO__: false,
  __SUPERVISOR__: false,
  __BACKWARDS_COMPAT__: false,
  __STATIC_PATH__: "/static/",
+  __HASS_URL__: `\`${
+    "HASS_URL" in process.env
+      ? process.env["HASS_URL"]
+      : "${location.protocol}//${location.host}"
+  }\``,
  "process.env.NODE_ENV": JSON.stringify(
    isProdBuild ? "production" : "development"
  ),
@@ -77,7 +84,12 @@ module.exports.terserOptions = ({ latestBuild, isTestBuild }) => ({
  sourceMap: !isTestBuild,
 });

-module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
+module.exports.babelOptions = ({
+  latestBuild,
+  isProdBuild,
+  isTestBuild,
+  sw,
+}) => ({
  babelrc: false,
  compact: false,
  assumptions: {
@@ -85,13 +97,13 @@ module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
    setPublicClassFields: true,
    setSpreadProperties: true,
  },
-  browserslistEnv: latestBuild ? "modern" : "legacy",
+  browserslistEnv: latestBuild ? "modern" : `legacy${sw ? "-sw" : ""}`,
  presets: [
    [
      "@babel/preset-env",
      {
-        useBuiltIns: latestBuild ? false : "usage",
-        corejs: latestBuild ? false : dependencies["core-js"],
+        useBuiltIns: "usage",
+        corejs: dependencies["core-js"],
        bugfixes: true,
        shippedProposals: true,
      },
@@ -100,22 +112,12 @@ module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
  ],
  plugins: [
    [
-      path.resolve(
-        paths.polymer_dir,
-        "build-scripts/babel-plugins/inline-constants-plugin.cjs"
-      ),
+      path.join(BABEL_PLUGINS, "inline-constants-plugin.cjs"),
      {
        modules: ["@mdi/js"],
        ignoreModuleNotFound: true,
      },
    ],
-    [
-      path.resolve(
-        paths.polymer_dir,
-        "build-scripts/babel-plugins/custom-polyfill-plugin.js"
-      ),
-      { method: "usage-global" },
-    ],
    // Minify template literals for production
    isProdBuild && [
      "template-html-minifier",
@@ -143,16 +145,42 @@ module.exports.babelOptions = ({ latestBuild, isProdBuild, isTestBuild }) => ({
      "@babel/plugin-transform-runtime",
      { version: dependencies["@babel/runtime"] },
    ],
-    // Support  some proposals still in TC39 process
-    ["@babel/plugin-proposal-decorators", { decoratorsBeforeExport: true }],
+    // Transpile decorators (still in TC39 process)
+    // Modern browsers support class fields and private methods, but transform is required with the older decorator version dictated by Lit
+    [
+      "@babel/plugin-proposal-decorators",
+      { version: "2018-09", decoratorsBeforeExport: true },
+    ],
+    "@babel/plugin-transform-class-properties",
+    "@babel/plugin-transform-private-methods",
  ].filter(Boolean),
  exclude: [
    // \\ for Windows, / for Mac OS and Linux
    /node_modules[\\/]core-js/,
-    /node_modules[\\/]webpack[\\/]buildin/,
  ],
  sourceMaps: !isTestBuild,
  overrides: [
+    {
+      // Add plugin to inject various polyfills, excluding the polyfills
+      // themselves to prevent self-injection.
+      plugins: [
+        [
+          path.join(BABEL_PLUGINS, "custom-polyfill-plugin.js"),
+          { method: "usage-global" },
+        ],
+      ],
+      exclude: [
+        path.join(paths.polymer_dir, "src/resources/polyfills"),
+        ...[
+          "@formatjs/(?:ecma402-abstract|intl-\\w+)",
+          "@lit-labs/virtualizer/polyfills",
+          "@webcomponents/scoped-custom-element-registry",
+          "element-internals-polyfill",
+          "proxy-polyfill",
+          "unfetch",
+        ].map((p) => new RegExp(`/node_modules/${p}/`)),
+      ],
+    },
    {
      // Use unambiguous for dependencies so that require() is correctly injected into CommonJS files
      // Exclusions are needed in some cases where ES modules have no static imports or exports, such as polyfills
@@ -202,7 +230,12 @@ module.exports.config = {
    return {
      name: "frontend" + nameSuffix(latestBuild),
      entry: {
-        service_worker: "./src/entrypoints/service_worker.ts",
+        "service-worker": !latestBuild
+          ? {
+              import: "./src/entrypoints/service-worker.ts",
+              layer: "sw",
+            }
+          : "./src/entrypoints/service-worker.ts",
        app: "./src/entrypoints/app.ts",
        authorize: "./src/entrypoints/authorize.ts",
        onboarding: "./src/entrypoints/onboarding.ts",
@@ -298,4 +331,17 @@ module.exports.config = {
      },
    };
  },
+
+  landingPage({ isProdBuild, latestBuild }) {
+    return {
+      name: "landing-page" + nameSuffix(latestBuild),
+      entry: {
+        entrypoint: path.resolve(paths.landingPage_dir, "src/entrypoint.js"),
+      },
+      outputPath: outputPath(paths.landingPage_output_root, latestBuild),
+      publicPath: publicPath(latestBuild),
+      isProdBuild,
+      latestBuild,
+    };
+  },
 };
@@ -2,26 +2,22 @@ const fs = require("fs");
 const path = require("path");
 const paths = require("./paths.cjs");

+const isTrue = (value) => value === "1" || value?.toLowerCase() === "true";
+
 module.exports = {
-  useRollup() {
-    return process.env.ROLLUP === "1";
-  },
-  useWDS() {
-    return process.env.WDS === "1";
-  },
  isProdBuild() {
    return (
      process.env.NODE_ENV === "production" || module.exports.isStatsBuild()
    );
  },
  isStatsBuild() {
-    return process.env.STATS === "1";
+    return isTrue(process.env.STATS);
  },
  isTestBuild() {
-    return process.env.IS_TEST === "true";
+    return isTrue(process.env.IS_TEST);
  },
  isNetlify() {
-    return process.env.NETLIFY === "true";
+    return isTrue(process.env.NETLIFY);
  },
  version() {
    const version = fs
@@ -32,4 +28,7 @@ module.exports = {
    }
    return version[1];
  },
+  isDevContainer() {
+    return isTrue(process.env.DEV_CONTAINER);
+  },
 };
@@ -0,0 +1,16 @@
+import rootConfig from "../eslint.config.mjs";
+
+export default [
+  ...rootConfig,
+  {
+    rules: {
+      "no-console": "off",
+      "import/no-extraneous-dependencies": "off",
+      "import/extensions": "off",
+      "import/no-dynamic-require": "off",
+      "global-require": "off",
+      "@typescript-eslint/no-require-imports": "off",
+      "prefer-arrow-callback": "off",
+    },
+  },
+];
@@ -6,11 +6,9 @@ import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
 import "./locale-data.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./wds.js";
-import "./webpack.js";
+import "./rspack.js";

 gulp.task(
  "develop-app",
@@ -27,11 +25,7 @@ gulp.task(
      "build-locale-data"
    ),
    "copy-static-app",
-    env.useWDS()
-      ? "wds-watch-app"
-      : env.useRollup()
-        ? "rollup-watch-app"
-        : "webpack-watch-app"
+    "rspack-watch-app"
  )
 );

@@ -44,9 +38,20 @@ gulp.task(
    "clean",
    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-app",
-    env.useRollup() ? "rollup-prod-app" : "webpack-prod-app",
+    "rspack-prod-app",
    gulp.parallel("gen-pages-app-prod", "gen-service-worker-app-prod"),
    // Don't compress running tests
-    ...(env.isTestBuild() ? [] : ["compress-app"])
+    ...(env.isTestBuild() || env.isStatsBuild() ? [] : ["compress-app"])
+  )
+);
+
+gulp.task(
+  "analyze-app",
+  gulp.series(
+    async function setEnv() {
+      process.env.STATS = "1";
+    },
+    "clean",
+    "rspack-prod-app"
  )
 );
@@ -1,12 +1,10 @@
 import gulp from "gulp";
-import env from "../env.cjs";
 import "./clean.js";
 import "./entry-html.js";
 import "./gather-static.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";

 gulp.task(
  "develop-cast",
@@ -19,7 +17,7 @@ gulp.task(
    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-cast",
    "gen-pages-cast-dev",
-    env.useRollup() ? "rollup-dev-server-cast" : "webpack-dev-server-cast"
+    "rspack-dev-server-cast"
  )
 );

@@ -33,7 +31,7 @@ gulp.task(
    "translations-enable-merge-backend",
    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-cast",
-    env.useRollup() ? "rollup-prod-cast" : "webpack-prod-cast",
+    "rspack-prod-cast",
    "gen-pages-cast-prod"
  )
 );
@@ -38,3 +38,14 @@ gulp.task(
    ])
  )
 );
+
+gulp.task(
+  "clean-landing-page",
+  gulp.parallel("clean-translations", async () =>
+    deleteSync([
+      paths.landingPage_output_root,
+      paths.landingPage_build,
+      paths.build_dir,
+    ])
+  )
+);
@@ -1,19 +1,86 @@
 // Tasks to compress

+import { constants } from "node:zlib";
 import gulp from "gulp";
+import brotli from "gulp-brotli";
 import zopfli from "gulp-zopfli-green";
 import paths from "../paths.cjs";

+const filesGlob = "*.{js,json,css,svg,xml}";
+const brotliOptions = {
+  skipLarger: true,
+  params: {
+    [constants.BROTLI_PARAM_QUALITY]: constants.BROTLI_MAX_QUALITY,
+  },
+};
 const zopfliOptions = { threshold: 150 };

-const compressDist = (rootDir) =>
+const compressModern = (rootDir, modernDir, compress) =>
  gulp
-    .src([
-      `${rootDir}/**/*.{js,json,css,svg,xml}`,
-      `${rootDir}/{authorize,onboarding}.html`,
-    ])
-    .pipe(zopfli(zopfliOptions))
+    .src([`${modernDir}/**/${filesGlob}`, `${rootDir}/sw-modern.js`], {
+      base: rootDir,
+      allowEmpty: true,
+    })
+    .pipe(compress === "zopfli" ? zopfli(zopfliOptions) : brotli(brotliOptions))
    .pipe(gulp.dest(rootDir));

-gulp.task("compress-app", () => compressDist(paths.app_output_root));
-gulp.task("compress-hassio", () => compressDist(paths.hassio_output_root));
+const compressOther = (rootDir, modernDir, compress) =>
+  gulp
+    .src(
+      [
+        `${rootDir}/**/${filesGlob}`,
+        `!${modernDir}/**/${filesGlob}`,
+        `!${rootDir}/{sw-modern,service_worker}.js`,
+        `${rootDir}/{authorize,onboarding}.html`,
+      ],
+      { base: rootDir, allowEmpty: true }
+    )
+    .pipe(compress === "zopfli" ? zopfli(zopfliOptions) : brotli(brotliOptions))
+    .pipe(gulp.dest(rootDir));
+
+const compressAppModernBrotli = () =>
+  compressModern(paths.app_output_root, paths.app_output_latest, "brotli");
+const compressAppModernZopfli = () =>
+  compressModern(paths.app_output_root, paths.app_output_latest, "zopfli");
+
+const compressHassioModernBrotli = () =>
+  compressModern(
+    paths.hassio_output_root,
+    paths.hassio_output_latest,
+    "brotli"
+  );
+const compressHassioModernZopfli = () =>
+  compressModern(
+    paths.hassio_output_root,
+    paths.hassio_output_latest,
+    "zopfli"
+  );
+
+const compressAppOtherBrotli = () =>
+  compressOther(paths.app_output_root, paths.app_output_latest, "brotli");
+const compressAppOtherZopfli = () =>
+  compressOther(paths.app_output_root, paths.app_output_latest, "zopfli");
+
+const compressHassioOtherBrotli = () =>
+  compressOther(paths.hassio_output_root, paths.hassio_output_latest, "brotli");
+const compressHassioOtherZopfli = () =>
+  compressOther(paths.hassio_output_root, paths.hassio_output_latest, "zopfli");
+
+gulp.task(
+  "compress-app",
+  gulp.parallel(
+    compressAppModernBrotli,
+    compressAppOtherBrotli,
+    compressAppModernZopfli,
+    compressAppOtherZopfli
+  )
+);
+gulp.task(
+  "compress-hassio",
+  gulp.parallel(
+    compressHassioModernBrotli,
+    compressHassioOtherBrotli,
+    compressHassioModernZopfli,
+    compressHassioOtherZopfli
+  )
+);
@@ -1,13 +1,11 @@
 import gulp from "gulp";
-import env from "../env.cjs";
 import "./clean.js";
 import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";

 gulp.task(
  "develop-demo",
@@ -24,7 +22,7 @@ gulp.task(
      "build-locale-data"
    ),
    "copy-static-demo",
-    env.useRollup() ? "rollup-dev-server-demo" : "webpack-dev-server-demo"
+    "rspack-dev-server-demo"
  )
 );

@@ -39,7 +37,18 @@ gulp.task(
    "translations-enable-merge-backend",
    gulp.parallel("gen-icons-json", "build-translations", "build-locale-data"),
    "copy-static-demo",
-    env.useRollup() ? "rollup-prod-demo" : "webpack-prod-demo",
+    "rspack-prod-demo",
    "gen-pages-demo-prod"
  )
 );
+
+gulp.task(
+  "analyze-demo",
+  gulp.series(
+    async function setEnv() {
+      process.env.STATS = "1";
+    },
+    "clean",
+    "rspack-prod-demo"
+  )
+);
@@ -13,7 +13,7 @@ const srcMeta = "src/translations/translationMetadata.json";
 const encoding = "utf8";

 function hasHtml(data) {
-  return /<[a-z][\s\S]*>/i.test(data);
+  return /<\S*>/i.test(data);
 }

 function recursiveCheckHasHtml(file, data, errors, recKey) {
@@ -127,6 +127,7 @@ gulp.task("fetch-lokalise", async function () {
          replace_breaks: false,
          json_unescaped_slashes: true,
          export_empty_as: "skip",
+          filter_data: ["verified"],
        })
        .then((download) => fetch(download.bundle_url))
        .then((response) => {
@@ -1,28 +1,73 @@
 // Tasks to generate entry HTML

+import {
+  applyVersionsToRegexes,
+  compileRegex,
+  getPreUserAgentRegexes,
+} from "browserslist-useragent-regexp";
 import fs from "fs-extra";
 import gulp from "gulp";
 import { minify } from "html-minifier-terser";
 import template from "lodash.template";
-import path from "path";
+import { dirname, extname, resolve } from "node:path";
 import { htmlMinifierOptions, terserOptions } from "../bundle.cjs";
-import env from "../env.cjs";
 import paths from "../paths.cjs";

+// macOS companion app has no way to obtain the Safari version used by WKWebView,
+// and it is not in the default user agent string. So we add an additional regex
+// to serve modern based on a minimum macOS version. We take the minimum Safari
+// major version from browserslist and manually map that to a supported macOS
+// version. Note this assumes the user has kept Safari updated.
+const HA_MACOS_REGEX =
+  /Home Assistant\/[\d.]+ \(.+; macOS (\d+)\.(\d+)(?:\.(\d+))?\)/;
+const SAFARI_TO_MACOS = {
+  15: [10, 15, 0],
+  16: [11, 0, 0],
+  17: [12, 0, 0],
+  18: [13, 0, 0],
+};
+
+const getCommonTemplateVars = () => {
+  const browserRegexes = getPreUserAgentRegexes({
+    env: "modern",
+    allowHigherVersions: true,
+    mobileToDesktop: true,
+    throwOnMissing: true,
+  });
+  const minSafariVersion = browserRegexes.find(
+    (regex) => regex.family === "safari"
+  )?.matchedVersions[0][0];
+  const minMacOSVersion = SAFARI_TO_MACOS[minSafariVersion];
+  if (!minMacOSVersion) {
+    throw Error(
+      `Could not find minimum MacOS version for Safari ${minSafariVersion}.`
+    );
+  }
+  const haMacOSRegex = applyVersionsToRegexes(
+    [
+      {
+        family: "ha_macos",
+        regex: HA_MACOS_REGEX,
+        matchedVersions: [minMacOSVersion],
+        requestVersions: [minMacOSVersion],
+      },
+    ],
+    { ignorePatch: true, allowHigherVersions: true }
+  );
+  return {
+    modernRegex: compileRegex(browserRegexes.concat(haMacOSRegex)).toString(),
+  };
+};
+
 const renderTemplate = (templateFile, data = {}) => {
  const compiled = template(
    fs.readFileSync(templateFile, { encoding: "utf-8" })
  );
  return compiled({
    ...data,
-    useRollup: env.useRollup(),
-    useWDS: env.useWDS(),
    // Resolve any child/nested templates relative to the parent and pass the same data
    renderTemplate: (childTemplate) =>
-      renderTemplate(
-        path.resolve(path.dirname(templateFile), childTemplate),
-        data
-      ),
+      renderTemplate(resolve(dirname(templateFile), childTemplate), data),
  });
 };

@@ -45,36 +90,32 @@ const minifyHtml = (content, ext) => {
 };

 // Function to generate a dev task for each project's configuration
-// Note Currently WDS paths are hard-coded to only work for app
 const genPagesDevTask =
  (
    pageEntries,
    inputRoot,
    outputRoot,
-    useWDS = false,
    inputSub = "src/html",
    publicRoot = ""
  ) =>
  async () => {
+    const commonVars = getCommonTemplateVars();
    for (const [page, entries] of Object.entries(pageEntries)) {
      const content = renderTemplate(
-        path.resolve(inputRoot, inputSub, `${page}.template`),
+        resolve(inputRoot, inputSub, `${page}.template`),
        {
-          latestEntryJS: entries.map((entry) =>
-            useWDS
-              ? `http://localhost:8000/src/entrypoints/${entry}.ts`
-              : `${publicRoot}/frontend_latest/${entry}.js`
+          ...commonVars,
+          latestEntryJS: entries.map(
+            (entry) => `${publicRoot}/frontend_latest/${entry}.js`
          ),
          es5EntryJS: entries.map(
            (entry) => `${publicRoot}/frontend_es5/${entry}.js`
          ),
-          latestCustomPanelJS: useWDS
-            ? "http://localhost:8000/src/entrypoints/custom-panel.ts"
-            : `${publicRoot}/frontend_latest/custom-panel.js`,
+          latestCustomPanelJS: `${publicRoot}/frontend_latest/custom-panel.js`,
          es5CustomPanelJS: `${publicRoot}/frontend_es5/custom-panel.js`,
        }
      );
-      fs.outputFileSync(path.resolve(outputRoot, page), content);
+      fs.outputFileSync(resolve(outputRoot, page), content);
    }
  };

@@ -91,16 +132,18 @@ const genPagesProdTask =
  ) =>
  async () => {
    const latestManifest = fs.readJsonSync(
-      path.resolve(outputLatest, "manifest.json")
+      resolve(outputLatest, "manifest.json")
    );
    const es5Manifest = outputES5
-      ? fs.readJsonSync(path.resolve(outputES5, "manifest.json"))
+      ? fs.readJsonSync(resolve(outputES5, "manifest.json"))
      : {};
+    const commonVars = getCommonTemplateVars();
    const minifiedHTML = [];
    for (const [page, entries] of Object.entries(pageEntries)) {
      const content = renderTemplate(
-        path.resolve(inputRoot, inputSub, `${page}.template`),
+        resolve(inputRoot, inputSub, `${page}.template`),
        {
+          ...commonVars,
          latestEntryJS: entries.map((entry) => latestManifest[`${entry}.js`]),
          es5EntryJS: entries.map((entry) => es5Manifest[`${entry}.js`]),
          latestCustomPanelJS: latestManifest["custom-panel.js"],
@@ -108,8 +151,8 @@ const genPagesProdTask =
        }
      );
      minifiedHTML.push(
-        minifyHtml(content, path.extname(page)).then((minified) =>
-          fs.outputFileSync(path.resolve(outputRoot, page), minified)
+        minifyHtml(content, extname(page)).then((minified) =>
+          fs.outputFileSync(resolve(outputRoot, page), minified)
        )
      );
    }
@@ -125,12 +168,7 @@ const APP_PAGE_ENTRIES = {

 gulp.task(
  "gen-pages-app-dev",
-  genPagesDevTask(
-    APP_PAGE_ENTRIES,
-    paths.polymer_dir,
-    paths.app_output_root,
-    env.useWDS()
-  )
+  genPagesDevTask(APP_PAGE_ENTRIES, paths.polymer_dir, paths.app_output_root)
 );

 gulp.task(
@@ -206,6 +244,28 @@ gulp.task(
  )
 );

+const LANDING_PAGE_PAGE_ENTRIES = { "index.html": ["entrypoint"] };
+
+gulp.task(
+  "gen-pages-landing-page-dev",
+  genPagesDevTask(
+    LANDING_PAGE_PAGE_ENTRIES,
+    paths.landingPage_dir,
+    paths.landingPage_output_root
+  )
+);
+
+gulp.task(
+  "gen-pages-landing-page-prod",
+  genPagesProdTask(
+    LANDING_PAGE_PAGE_ENTRIES,
+    paths.landingPage_dir,
+    paths.landingPage_output_root,
+    paths.landingPage_output_latest,
+    paths.landingPage_output_es5
+  )
+);
+
 const HASSIO_PAGE_ENTRIES = { "entrypoint.js": ["entrypoint"] };

 gulp.task(
@@ -214,7 +274,6 @@ gulp.task(
    HASSIO_PAGE_ENTRIES,
    paths.hassio_dir,
    paths.hassio_output_root,
-    undefined,
    "src",
    paths.hassio_publicPath
  )
@@ -9,7 +9,7 @@ import gulp from "gulp";
 import jszip from "jszip";
 import path from "path";
 import process from "process";
-import tar from "tar";
+import { extract } from "tar";

 const MAX_AGE = 24; // hours
 const OWNER = "home-assistant";
@@ -66,7 +66,7 @@ gulp.task("fetch-nightly-translations", async function () {
      tokenAuth = JSON.parse(await readFile(TOKEN_FILE, "utf-8"));
    } catch {
      if (!allowTokenSetup) {
-        console.log("No token found so  build wil continue with English only");
+        console.log("No token found so build will continue with English only");
        return;
      }
      const auth = createOAuthDeviceAuth({
@@ -156,7 +156,7 @@ gulp.task("fetch-nightly-translations", async function () {
  console.log("Unpacking downloaded translations...");
  const zip = await jszip.loadAsync(downloadResponse.data);
  await deleteCurrent;
-  const extractStream = zip.file(/.*/)[0].nodeStream().pipe(tar.extract());
+  const extractStream = zip.file(/.*/)[0].nodeStream().pipe(extract());
  await new Promise((resolve, reject) => {
    extractStream.on("close", resolve).on("error", reject);
  });
@@ -4,16 +4,14 @@ import gulp from "gulp";
 import yaml from "js-yaml";
 import { marked } from "marked";
 import path from "path";
-import env from "../env.cjs";
 import paths from "../paths.cjs";
 import "./clean.js";
 import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
-import "./rollup.js";
 import "./service-worker.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";

 gulp.task("gather-gallery-pages", async function gatherPages() {
  const pageDir = path.resolve(paths.gallery_dir, "src/pages");
@@ -158,9 +156,7 @@ gulp.task(
    "copy-static-gallery",
    "gen-pages-gallery-dev",
    gulp.parallel(
-      env.useRollup()
-        ? "rollup-dev-server-gallery"
-        : "webpack-dev-server-gallery",
+      "rspack-dev-server-gallery",
      async function watchMarkdownFiles() {
        gulp.watch(
          [
@@ -189,7 +185,7 @@ gulp.task(
      "gather-gallery-pages"
    ),
    "copy-static-gallery",
-    env.useRollup() ? "rollup-prod-gallery" : "webpack-prod-gallery",
+    "rspack-prod-gallery",
    "gen-pages-gallery-prod"
  )
 );
@@ -4,7 +4,6 @@ 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);
@@ -60,15 +59,12 @@ function copyPolyfills(staticDir) {
    npmPath("@webcomponents/webcomponentsjs/webcomponents-bundle.js.map"),
    staticPath("polyfills/")
  );
-}

-function copyLoaderJS(staticDir) {
-  if (!env.useRollup()) {
-    return;
-  }
-  const staticPath = genStaticPath(staticDir);
-  copyFileDir(npmPath("systemjs/dist/s.min.js"), staticPath("js"));
-  copyFileDir(npmPath("systemjs/dist/s.min.js.map"), staticPath("js"));
+  // dialog-polyfill css
+  copyFileDir(
+    npmPath("dialog-polyfill/dialog-polyfill.css"),
+    staticPath("polyfills/")
+  );
 }

 function copyFonts(staticDir) {
@@ -100,6 +96,14 @@ function copyMapPanel(staticDir) {
  );
 }

+function copyZXingWasm(staticDir) {
+  const staticPath = genStaticPath(staticDir);
+  copyFileDir(
+    npmPath("zxing-wasm/dist/reader/zxing_reader.wasm"),
+    staticPath("js")
+  );
+}
+
 gulp.task("copy-locale-data", async () => {
  const staticDir = paths.app_output_static;
  copyLocaleData(staticDir);
@@ -115,6 +119,11 @@ gulp.task("copy-translations-supervisor", async () => {
  copyTranslations(staticDir);
 });

+gulp.task("copy-translations-landing-page", async () => {
+  const staticDir = paths.landingPage_output_static;
+  copyTranslations(staticDir);
+});
+
 gulp.task("copy-static-supervisor", async () => {
  const staticDir = paths.hassio_output_static;
  copyLocaleData(staticDir);
@@ -125,8 +134,6 @@ gulp.task("copy-static-app", async () => {
  const staticDir = paths.app_output_static;
  // Basic static files
  fs.copySync(polyPath("public"), paths.app_output_root);
-
-  copyLoaderJS(staticDir);
  copyPolyfills(staticDir);
  copyFonts(staticDir);
  copyTranslations(staticDir);
@@ -137,6 +144,7 @@ gulp.task("copy-static-app", async () => {
  copyMapPanel(staticDir);

  // Qr Scanner assets
+  copyZXingWasm(staticDir);
  copyQrScannerWorker(staticDir);
 });

@@ -148,8 +156,6 @@ gulp.task("copy-static-demo", async () => {
  );
  // Copy demo static files
  fs.copySync(path.resolve(paths.demo_dir, "public"), paths.demo_output_root);
-
-  copyLoaderJS(paths.demo_output_static);
  copyPolyfills(paths.demo_output_static);
  copyMapPanel(paths.demo_output_static);
  copyFonts(paths.demo_output_static);
@@ -163,8 +169,6 @@ gulp.task("copy-static-cast", async () => {
  fs.copySync(polyPath("public/static"), paths.cast_output_static);
  // Copy cast static files
  fs.copySync(path.resolve(paths.cast_dir, "public"), paths.cast_output_root);
-
-  copyLoaderJS(paths.cast_output_static);
  copyPolyfills(paths.cast_output_static);
  copyMapPanel(paths.cast_output_static);
  copyFonts(paths.cast_output_static);
@@ -188,3 +192,14 @@ gulp.task("copy-static-gallery", async () => {
  copyLocaleData(paths.gallery_output_static);
  copyMdiIcons(paths.gallery_output_static);
 });
+
+gulp.task("copy-static-landing-page", async () => {
+  // Copy landing-page static files
+  fs.copySync(
+    path.resolve(paths.landingPage_dir, "public"),
+    paths.landingPage_output_root
+  );
+
+  copyFonts(paths.landingPage_output_static);
+  copyTranslations(paths.landingPage_output_static);
+});
@@ -5,9 +5,8 @@ import "./compress.js";
 import "./entry-html.js";
 import "./gather-static.js";
 import "./gen-icons-json.js";
-import "./rollup.js";
 import "./translations.js";
-import "./webpack.js";
+import "./rspack.js";

 gulp.task(
  "develop-hassio",
@@ -22,7 +21,7 @@ gulp.task(
    "copy-translations-supervisor",
    "build-locale-data",
    "copy-static-supervisor",
-    env.useRollup() ? "rollup-watch-hassio" : "webpack-watch-hassio"
+    "rspack-watch-hassio"
  )
 );

@@ -38,7 +37,7 @@ gulp.task(
    "copy-translations-supervisor",
    "build-locale-data",
    "copy-static-supervisor",
-    env.useRollup() ? "rollup-prod-hassio" : "webpack-prod-hassio",
+    "rspack-prod-hassio",
    "gen-pages-hassio-prod",
    ...// Don't compress running tests
    (env.isTestBuild() ? [] : ["compress-hassio"])
@@ -0,0 +1,17 @@
+import "./app.js";
+import "./cast.js";
+import "./clean.js";
+import "./compress.js";
+import "./demo.js";
+import "./download-translations.js";
+import "./entry-html.js";
+import "./fetch-nightly-translations.js";
+import "./gallery.js";
+import "./gather-static.js";
+import "./gen-icons-json.js";
+import "./hassio.js";
+import "./landing-page.js";
+import "./locale-data.js";
+import "./rspack.js";
+import "./service-worker.js";
+import "./translations.js";
@@ -0,0 +1,41 @@
+import gulp from "gulp";
+import "./clean.js";
+import "./compress.js";
+import "./entry-html.js";
+import "./gather-static.js";
+import "./gen-icons-json.js";
+import "./translations.js";
+import "./rspack.js";
+
+gulp.task(
+  "develop-landing-page",
+  gulp.series(
+    async function setEnv() {
+      process.env.NODE_ENV = "development";
+    },
+    "clean-landing-page",
+    "translations-enable-merge-backend",
+    "build-landing-page-translations",
+    "copy-translations-landing-page",
+    "build-locale-data",
+    "copy-static-landing-page",
+    "gen-pages-landing-page-dev",
+    "rspack-watch-landing-page"
+  )
+);
+
+gulp.task(
+  "build-landing-page",
+  gulp.series(
+    async function setEnv() {
+      process.env.NODE_ENV = "production";
+    },
+    "clean-landing-page",
+    "build-landing-page-translations",
+    "copy-translations-landing-page",
+    "build-locale-data",
+    "copy-static-landing-page",
+    "rspack-prod-landing-page",
+    "gen-pages-landing-page-prod"
+  )
+);
@@ -24,8 +24,11 @@ const convertToJSON = async (
 ) => {
  let localeData;
  try {
+    // use "pt" for "pt-BR", because "pt-BR" is unsupported by @formatjs
+    const language = lang === "pt-BR" ? "pt" : lang;
+
    localeData = await readFile(
-      join(formatjsDir, pkg, subDir, `${lang}.js`),
+      join(formatjsDir, pkg, subDir, `${language}.js`),
      "utf-8"
    );
  } catch (e) {
@@ -1,147 +0,0 @@
-// Tasks to run Rollup
-
-import log from "fancy-log";
-import gulp from "gulp";
-import http from "http";
-import open from "open";
-import path from "path";
-import { rollup } from "rollup";
-import handler from "serve-handler";
-import paths from "../paths.cjs";
-import rollupConfig from "../rollup.cjs";
-
-const bothBuilds = (createConfigFunc, params) =>
-  gulp.series(
-    async function buildLatest() {
-      await buildRollup(
-        createConfigFunc({
-          ...params,
-          latestBuild: true,
-        })
-      );
-    },
-    async function buildES5() {
-      await buildRollup(
-        createConfigFunc({
-          ...params,
-          latestBuild: false,
-        })
-      );
-    }
-  );
-
-function createServer(serveOptions) {
-  const server = http.createServer((request, response) =>
-    handler(request, response, {
-      public: serveOptions.root,
-    })
-  );
-
-  server.listen(
-    serveOptions.port,
-    serveOptions.networkAccess ? "0.0.0.0" : undefined,
-    () => {
-      log.info(`Available at http://localhost:${serveOptions.port}`);
-      open(`http://localhost:${serveOptions.port}`);
-    }
-  );
-}
-
-function watchRollup(createConfig, extraWatchSrc = [], serveOptions = null) {
-  const { inputOptions, outputOptions } = createConfig({
-    isProdBuild: false,
-    latestBuild: true,
-  });
-
-  const watcher = rollup.watch({
-    ...inputOptions,
-    output: [outputOptions],
-    watch: {
-      include: ["src/**"] + extraWatchSrc,
-    },
-  });
-
-  let startedHttp = false;
-
-  watcher.on("event", (event) => {
-    if (event.code === "BUNDLE_END") {
-      log(`Build done @ ${new Date().toLocaleTimeString()}`);
-    } else if (event.code === "ERROR") {
-      log.error(event.error);
-    } else if (event.code === "END") {
-      if (startedHttp || !serveOptions) {
-        return;
-      }
-      startedHttp = true;
-      createServer(serveOptions);
-    }
-  });
-
-  gulp.watch(
-    path.join(paths.translations_src, "en.json"),
-    gulp.series("build-translations", "copy-translations-app")
-  );
-}
-
-async function buildRollup(config) {
-  const bundle = await rollup.rollup(config.inputOptions);
-  await bundle.write(config.outputOptions);
-}
-
-gulp.task("rollup-watch-app", () => {
-  watchRollup(rollupConfig.createAppConfig);
-});
-
-gulp.task("rollup-watch-hassio", () => {
-  watchRollup(rollupConfig.createHassioConfig, ["hassio/src/**"]);
-});
-
-gulp.task("rollup-dev-server-demo", () => {
-  watchRollup(rollupConfig.createDemoConfig, ["demo/src/**"], {
-    root: paths.demo_output_root,
-    port: 8090,
-  });
-});
-
-gulp.task("rollup-dev-server-cast", () => {
-  watchRollup(rollupConfig.createCastConfig, ["cast/src/**"], {
-    root: paths.cast_output_root,
-    port: 8080,
-    networkAccess: true,
-  });
-});
-
-gulp.task("rollup-dev-server-gallery", () => {
-  watchRollup(rollupConfig.createGalleryConfig, ["gallery/src/**"], {
-    root: paths.gallery_output_root,
-    port: 8100,
-  });
-});
-
-gulp.task(
-  "rollup-prod-app",
-  bothBuilds(rollupConfig.createAppConfig, { isProdBuild: true })
-);
-
-gulp.task(
-  "rollup-prod-demo",
-  bothBuilds(rollupConfig.createDemoConfig, { isProdBuild: true })
-);
-
-gulp.task(
-  "rollup-prod-cast",
-  bothBuilds(rollupConfig.createCastConfig, { isProdBuild: true })
-);
-
-gulp.task("rollup-prod-hassio", () =>
-  bothBuilds(rollupConfig.createHassioConfig, { isProdBuild: true })
-);
-
-gulp.task("rollup-prod-gallery", () =>
-  buildRollup(
-    rollupConfig.createGalleryConfig({
-      isProdBuild: true,
-      latestBuild: true,
-    })
-  )
-);
@@ -1,11 +1,11 @@
-// Tasks to run webpack.
+// Tasks to run rspack.

 import fs from "fs";
 import path from "path";
 import log from "fancy-log";
 import gulp from "gulp";
-import webpack from "webpack";
-import WebpackDevServer from "webpack-dev-server";
+import rspack from "@rspack/core";
+import { RspackDevServer } from "@rspack/dev-server";
 import env from "../env.cjs";
 import paths from "../paths.cjs";
 import {
@@ -14,7 +14,8 @@ import {
  createDemoConfig,
  createGalleryConfig,
  createHassioConfig,
-} from "../webpack.cjs";
+  createLandingPageConfig,
+} from "../rspack.cjs";

 const bothBuilds = (createConfigFunc, params) => [
  createConfigFunc({ ...params, latestBuild: true }),
@@ -30,7 +31,7 @@ const isWsl =

 /**
 * @param {{
- *   compiler: import("webpack").Compiler,
+ *   compiler: import("@rspack/core").Compiler,
 *   contentBase: string,
 *   port: number,
 *   listenHost?: string
@@ -40,9 +41,14 @@ const runDevServer = async ({
  compiler,
  contentBase,
  port,
-  listenHost = "localhost",
+  listenHost = undefined,
+  proxy = undefined,
 }) => {
-  const server = new WebpackDevServer(
+  if (listenHost === undefined) {
+    // For dev container, we need to listen on all hosts
+    listenHost = env.isDevContainer() ? "0.0.0.0" : "localhost";
+  }
+  const server = new RspackDevServer(
    {
      hot: false,
      open: true,
@@ -52,13 +58,14 @@ const runDevServer = async ({
        directory: contentBase,
        watch: true,
      },
+      proxy,
    },
    compiler
  );

  await server.start();
  // Server listening
-  log("[webpack-dev-server]", `Project is running at http://localhost:${port}`);
+  log("[rspack-dev-server]", `Project is running at http://localhost:${port}`);
 };

 const doneHandler = (done) => (err, stats) => {
@@ -83,27 +90,27 @@ const doneHandler = (done) => (err, stats) => {

 const prodBuild = (conf) =>
  new Promise((resolve) => {
-    webpack(
+    rspack(
      conf,
-      // Resolve promise when done. Because we pass a callback, webpack closes itself
+      // Resolve promise when done. Because we pass a callback, rspack closes itself
      doneHandler(resolve)
    );
  });

-gulp.task("webpack-watch-app", () => {
+gulp.task("rspack-watch-app", () => {
  // This command will run forever because we don't close compiler
-  webpack(
+  rspack(
    process.env.ES5
      ? bothBuilds(createAppConfig, { isProdBuild: false })
      : createAppConfig({ isProdBuild: false, latestBuild: true })
  ).watch({ poll: isWsl }, doneHandler());
  gulp.watch(
    path.join(paths.translations_src, "en.json"),
-    gulp.series("create-translations", "copy-translations-app")
+    gulp.series("build-translations", "copy-translations-app")
  );
 });

-gulp.task("webpack-prod-app", () =>
+gulp.task("rspack-prod-app", () =>
  prodBuild(
    bothBuilds(createAppConfig, {
      isProdBuild: true,
@@ -113,9 +120,9 @@ gulp.task("webpack-prod-app", () =>
  )
 );

-gulp.task("webpack-dev-server-demo", () =>
+gulp.task("rspack-dev-server-demo", () =>
  runDevServer({
-    compiler: webpack(
+    compiler: rspack(
      createDemoConfig({ isProdBuild: false, latestBuild: true })
    ),
    contentBase: paths.demo_output_root,
@@ -123,17 +130,18 @@ gulp.task("webpack-dev-server-demo", () =>
  })
 );

-gulp.task("webpack-prod-demo", () =>
+gulp.task("rspack-prod-demo", () =>
  prodBuild(
    bothBuilds(createDemoConfig, {
      isProdBuild: true,
+      isStatsBuild: env.isStatsBuild(),
    })
  )
 );

-gulp.task("webpack-dev-server-cast", () =>
+gulp.task("rspack-dev-server-cast", () =>
  runDevServer({
-    compiler: webpack(
+    compiler: rspack(
      createCastConfig({ isProdBuild: false, latestBuild: true })
    ),
    contentBase: paths.cast_output_root,
@@ -143,7 +151,7 @@ gulp.task("webpack-dev-server-cast", () =>
  })
 );

-gulp.task("webpack-prod-cast", () =>
+gulp.task("rspack-prod-cast", () =>
  prodBuild(
    bothBuilds(createCastConfig, {
      isProdBuild: true,
@@ -151,9 +159,9 @@ gulp.task("webpack-prod-cast", () =>
  )
 );

-gulp.task("webpack-watch-hassio", () => {
+gulp.task("rspack-watch-hassio", () => {
  // This command will run forever because we don't close compiler
-  webpack(
+  rspack(
    createHassioConfig({
      isProdBuild: false,
      latestBuild: true,
@@ -166,7 +174,7 @@ gulp.task("webpack-watch-hassio", () => {
  );
 });

-gulp.task("webpack-prod-hassio", () =>
+gulp.task("rspack-prod-hassio", () =>
  prodBuild(
    bothBuilds(createHassioConfig, {
      isProdBuild: true,
@@ -176,9 +184,9 @@ gulp.task("webpack-prod-hassio", () =>
  )
 );

-gulp.task("webpack-dev-server-gallery", () =>
+gulp.task("rspack-dev-server-gallery", () =>
  runDevServer({
-    compiler: webpack(
+    compiler: rspack(
      createGalleryConfig({ isProdBuild: false, latestBuild: true })
    ),
    contentBase: paths.gallery_output_root,
@@ -187,7 +195,7 @@ gulp.task("webpack-dev-server-gallery", () =>
  })
 );

-gulp.task("webpack-prod-gallery", () =>
+gulp.task("rspack-prod-gallery", () =>
  prodBuild(
    createGalleryConfig({
      isProdBuild: true,
@@ -195,3 +203,30 @@ gulp.task("webpack-prod-gallery", () =>
    })
  )
 );
+
+gulp.task("rspack-watch-landing-page", () => {
+  // This command will run forever because we don't close compiler
+  rspack(
+    process.env.ES5
+      ? bothBuilds(createLandingPageConfig, { isProdBuild: false })
+      : createLandingPageConfig({ isProdBuild: false, latestBuild: true })
+  ).watch({ poll: isWsl }, doneHandler());
+
+  gulp.watch(
+    path.join(paths.translations_src, "en.json"),
+    gulp.series(
+      "build-landing-page-translations",
+      "copy-translations-landing-page"
+    )
+  );
+});
+
+gulp.task("rspack-prod-landing-page", () =>
+  prodBuild(
+    bothBuilds(createLandingPageConfig, {
+      isProdBuild: true,
+      isStatsBuild: env.isStatsBuild(),
+      isTestBuild: env.isTestBuild(),
+    })
+  )
+);
@@ -1,20 +1,19 @@
-// Generate service worker.
-// Based on manifest, create a file with the content as service_worker.js
+// Generate service workers

-import fs from "fs-extra";
+import { deleteAsync } from "del";
 import gulp from "gulp";
-import path from "path";
-import sourceMapUrl from "source-map-url";
-import workboxBuild from "workbox-build";
+import { mkdir, readFile, symlink, writeFile } from "node:fs/promises";
+import { basename, join, relative } from "node:path";
+import { injectManifest } from "workbox-build";
 import paths from "../paths.cjs";

-const swDest = path.resolve(paths.app_output_root, "service_worker.js");
+const SW_MAP = {
+  [paths.app_output_latest]: "modern",
+  [paths.app_output_es5]: "legacy",
+};

-const writeSW = (content) => fs.outputFileSync(swDest, content.trim() + "\n");
-
-gulp.task("gen-service-worker-app-dev", (done) => {
-  writeSW(
-    `
+const SW_DEV =
+  `
 console.debug('Service worker disabled in development');

 self.addEventListener('install', (event) => {
@@ -22,72 +21,67 @@ self.addEventListener('install', (event) => {
  // removing any prod service worker the dev might have running
  self.skipWaiting();
 });
-  `
+  `.trim() + "\n";
+
+gulp.task("gen-service-worker-app-dev", async () => {
+  await mkdir(paths.app_output_root, { recursive: true });
+  await Promise.all(
+    Object.values(SW_MAP).map((build) =>
+      writeFile(join(paths.app_output_root, `sw-${build}.js`), SW_DEV, {
+        encoding: "utf-8",
+      })
+    )
  );
-  done();
 });

-gulp.task("gen-service-worker-app-prod", async () => {
-  // Read bundled source file
-  const bundleManifestLatest = fs.readJsonSync(
-    path.resolve(paths.app_output_latest, "manifest.json")
-  );
-  let serviceWorkerContent = fs.readFileSync(
-    paths.app_output_root + bundleManifestLatest["service_worker.js"],
-    "utf-8"
-  );
-
-  // Delete old file from frontend_latest so manifest won't pick it up
-  fs.removeSync(
-    paths.app_output_root + bundleManifestLatest["service_worker.js"]
-  );
-  fs.removeSync(
-    paths.app_output_root + bundleManifestLatest["service_worker.js.map"]
-  );
-
-  // Remove ES5
-  const bundleManifestES5 = fs.readJsonSync(
-    path.resolve(paths.app_output_es5, "manifest.json")
-  );
-  fs.removeSync(paths.app_output_root + bundleManifestES5["service_worker.js"]);
-  fs.removeSync(
-    paths.app_output_root + bundleManifestES5["service_worker.js.map"]
-  );
-
-  const workboxManifest = await workboxBuild.getManifest({
-    // Files that mach this pattern will be considered unique and skip revision check
-    // ignore JS files + translation files
-    dontCacheBustURLsMatching: /(frontend_latest\/.+|static\/translations\/.+)/,
-
-    globDirectory: paths.app_output_root,
-    globPatterns: [
-      "frontend_latest/*.js",
-      // Cache all English translations because we catch them as fallback
-      // Using pattern to match hash instead of * to avoid caching en-GB
-      // 'v' added as valid hash letter because in dev we hash with 'dev'
-      "static/translations/**/en-+([a-fv0-9]).json",
-      // Icon shown on splash screen
-      "static/icons/favicon-192x192.png",
-      "static/icons/favicon.ico",
-      // Common fonts
-      "static/fonts/roboto/Roboto-Light.woff2",
-      "static/fonts/roboto/Roboto-Medium.woff2",
-      "static/fonts/roboto/Roboto-Regular.woff2",
-      "static/fonts/roboto/Roboto-Bold.woff2",
-    ],
-  });
-
-  for (const warning of workboxManifest.warnings) {
-    console.warn(warning);
-  }
-
-  // remove source map and add WB manifest
-  serviceWorkerContent = sourceMapUrl.removeFrom(serviceWorkerContent);
-  serviceWorkerContent = serviceWorkerContent.replace(
-    "WB_MANIFEST",
-    JSON.stringify(workboxManifest.manifestEntries)
-  );
-
-  // Write new file to root
-  fs.writeFileSync(swDest, serviceWorkerContent);
-});
+gulp.task("gen-service-worker-app-prod", () =>
+  Promise.all(
+    Object.entries(SW_MAP).map(async ([outPath, build]) => {
+      const manifest = JSON.parse(
+        await readFile(join(outPath, "manifest.json"), "utf-8")
+      );
+      const swSrc = join(paths.app_output_root, manifest["service-worker.js"]);
+      const swDest = join(paths.app_output_root, `sw-${build}.js`);
+      const buildDir = relative(paths.app_output_root, outPath);
+      const { warnings } = await injectManifest({
+        swSrc,
+        swDest,
+        injectionPoint: "__WB_MANIFEST__",
+        // Files that mach this pattern will be considered unique and skip revision check
+        // ignore JS files + translation files
+        dontCacheBustURLsMatching: new RegExp(
+          `(?:${buildDir}/.+|static/translations/.+)`
+        ),
+        globDirectory: paths.app_output_root,
+        globPatterns: [
+          `${buildDir}/*.js`,
+          // Cache all English translations because we catch them as fallback
+          // Using pattern to match hash instead of * to avoid caching en-GB
+          // 'v' added as valid hash letter because in dev we hash with 'dev'
+          "static/translations/**/en-+([a-fv0-9]).json",
+          // Icon shown on splash screen
+          "static/icons/favicon-192x192.png",
+          "static/icons/favicon.ico",
+          // Common fonts
+          "static/fonts/roboto/Roboto-Light.woff2",
+          "static/fonts/roboto/Roboto-Medium.woff2",
+          "static/fonts/roboto/Roboto-Regular.woff2",
+          "static/fonts/roboto/Roboto-Bold.woff2",
+        ],
+        globIgnores: [`${buildDir}/service-worker*`],
+      });
+      if (warnings.length > 0) {
+        console.warn(
+          `Problems while injecting ${build} service worker:\n`,
+          warnings.join("\n")
+        );
+      }
+      await deleteAsync(`${swSrc}?(.map)`);
+      // Needed to install new SW from a cached HTML
+      if (build === "modern") {
+        const swOld = join(paths.app_output_root, "service_worker.js");
+        await symlink(basename(swDest), swOld);
+      }
+    })
+  )
+);
@@ -1,92 +1,112 @@
-import { createHash } from "crypto";
-import { deleteSync } from "del";
-import { mkdirSync, readdirSync, readFileSync, renameSync } from "fs";
-import { writeFile } from "node:fs/promises";
+/* eslint-disable max-classes-per-file */
+
+import { deleteAsync } from "del";
+import { glob } from "glob";
 import gulp from "gulp";
-import flatmap from "gulp-flatmap";
-import transform from "gulp-json-transform";
-import merge from "gulp-merge-json";
 import rename from "gulp-rename";
-import path from "path";
-import vinylBuffer from "vinyl-buffer";
-import source from "vinyl-source-stream";
+import merge from "lodash.merge";
+import { createHash } from "node:crypto";
+import { mkdir, readFile } from "node:fs/promises";
+import { basename, join } from "node:path";
+import { PassThrough, Transform } from "node:stream";
+import { finished } from "node:stream/promises";
 import env from "../env.cjs";
 import paths from "../paths.cjs";
-import { mapFiles } from "../util.cjs";
 import "./fetch-nightly-translations.js";

 const inFrontendDir = "translations/frontend";
 const inBackendDir = "translations/backend";
 const workDir = "build/translations";
-const fullDir = workDir + "/full";
-const coreDir = workDir + "/core";
-const outDir = workDir + "/output";
+const outDir = join(workDir, "output");
+const EN_SRC = join(paths.translations_src, "en.json");
+const TEST_LOCALE = "en-x-test";
+
 let mergeBackend = false;

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

-// Panel translations which should be split from the core translations.
-const TRANSLATION_FRAGMENTS = Object.keys(
-  JSON.parse(
-    readFileSync(
-      path.resolve(paths.polymer_dir, "src/translations/en.json"),
-      "utf-8"
-    )
-  ).ui.panel
-);
+// Transform stream to apply a function on Vinyl JSON files (buffer mode only).
+// The provided function can either return a new object, or an array of
+// [object, subdirectory] pairs for fragmentizing the JSON.
+class CustomJSON extends Transform {
+  constructor(func, reviver = null) {
+    super({ objectMode: true });
+    this._func = func;
+    this._reviver = reviver;
+  }

-function recursiveFlatten(prefix, data) {
-  let output = {};
-  Object.keys(data).forEach((key) => {
-    if (typeof data[key] === "object") {
-      output = {
-        ...output,
-        ...recursiveFlatten(prefix + key + ".", data[key]),
-      };
+  async _transform(file, _, callback) {
+    try {
+      let obj = JSON.parse(file.contents.toString(), this._reviver);
+      if (this._func) obj = this._func(obj, file.path);
+      for (const [outObj, dir] of Array.isArray(obj) ? obj : [[obj, ""]]) {
+        const outFile = file.clone({ contents: false });
+        outFile.contents = Buffer.from(JSON.stringify(outObj));
+        outFile.dirname += `/${dir}`;
+        this.push(outFile);
+      }
+      callback(null);
+    } catch (err) {
+      callback(err);
+    }
+  }
+}
+
+// Transform stream to merge Vinyl JSON files (buffer mode only).
+class MergeJSON extends Transform {
+  _objects = [];
+
+  constructor(stem, startObj = {}, reviver = null) {
+    super({ objectMode: true, allowHalfOpen: false });
+    this._stem = stem;
+    this._startObj = structuredClone(startObj);
+    this._reviver = reviver;
+  }
+
+  async _transform(file, _, callback) {
+    try {
+      this._objects.push(JSON.parse(file.contents.toString(), this._reviver));
+      if (!this._outFile) this._outFile = file.clone({ contents: false });
+      callback(null);
+    } catch (err) {
+      callback(err);
+    }
+  }
+
+  async _flush(callback) {
+    try {
+      const mergedObj = merge(this._startObj, ...this._objects);
+      this._outFile.contents = Buffer.from(JSON.stringify(mergedObj));
+      this._outFile.stem = this._stem;
+      callback(null, this._outFile);
+    } catch (err) {
+      callback(err);
+    }
+  }
+}
+
+// Utility to flatten object keys to single level using separator
+const flatten = (data, prefix = "", sep = ".") => {
+  const output = {};
+  for (const [key, value] of Object.entries(data)) {
+    if (typeof value === "object") {
+      Object.assign(output, flatten(value, prefix + key + sep, sep));
    } else {
-      output[prefix + key] = data[key];
+      output[prefix + key] = value;
    }
-  });
+  }
  return output;
-}
+};

-function flatten(data) {
-  return recursiveFlatten("", data);
-}
-
-function emptyFilter(data) {
-  const newData = {};
-  Object.keys(data).forEach((key) => {
-    if (data[key]) {
-      if (typeof data[key] === "object") {
-        newData[key] = emptyFilter(data[key]);
-      } else {
-        newData[key] = data[key];
-      }
-    }
-  });
-  return newData;
-}
-
-function recursiveEmpty(data) {
-  const newData = {};
-  Object.keys(data).forEach((key) => {
-    if (data[key]) {
-      if (typeof data[key] === "object") {
-        newData[key] = recursiveEmpty(data[key]);
-      } else {
-        newData[key] = "TRANSLATED";
-      }
-    }
-  });
-  return newData;
-}
+// Filter functions that can be passed directly to JSON.parse()
+const emptyReviver = (_key, value) => value || undefined;
+const testReviver = (_key, value) =>
+  value && typeof value === "string" ? "TRANSLATED" : value;

 /**
 * Replace Lokalise key placeholders with their actual values.
@@ -95,60 +115,44 @@ function recursiveEmpty(data) {
 * be included in src/translations/en.json, but still be usable while
 * developing locally.
 *
- * @link https://docs.lokalise.co/article/KO5SZWLLsy-key-referencing
+ * @link https://docs.lokalise.com/en/articles/1400528-key-referencing
 */
-const re_key_reference = /\[%key:([^%]+)%\]/;
-function lokaliseTransform(data, original, file) {
+const KEY_REFERENCE = /\[%key:([^%]+)%\]/;
+const lokaliseTransform = (data, path, original = data) => {
  const output = {};
-  Object.entries(data).forEach(([key, value]) => {
-    if (value instanceof Object) {
-      output[key] = lokaliseTransform(value, original, file);
+  for (const [key, value] of Object.entries(data)) {
+    if (typeof value === "object") {
+      output[key] = lokaliseTransform(value, path, original);
    } else {
-      output[key] = value.replace(re_key_reference, (_match, lokalise_key) => {
+      output[key] = value.replace(KEY_REFERENCE, (_match, lokalise_key) => {
        const replace = lokalise_key.split("::").reduce((tr, k) => {
          if (!tr) {
-            throw Error(
-              `Invalid key placeholder ${lokalise_key} in ${file.path}`
-            );
+            throw Error(`Invalid key placeholder ${lokalise_key} in ${path}`);
          }
          return tr[k];
        }, original);
        if (typeof replace !== "string") {
-          throw Error(
-            `Invalid key placeholder ${lokalise_key} in ${file.path}`
-          );
+          throw Error(`Invalid key placeholder ${lokalise_key} in ${path}`);
        }
        return replace;
      });
    }
-  });
+  }
  return output;
-}
+};

-gulp.task("clean-translations", async () => deleteSync([workDir]));
+gulp.task("clean-translations", () => deleteAsync([workDir]));

-gulp.task("ensure-translations-build-dir", async () => {
-  mkdirSync(workDir, { recursive: true });
-});
+const makeWorkDir = () => mkdir(workDir, { recursive: true });

-gulp.task("create-test-metadata", () =>
-  env.isProdBuild()
-    ? Promise.resolve()
-    : writeFile(
-        workDir + "/testMetadata.json",
-        JSON.stringify({ test: { nativeName: "Test" } })
-      )
-);
-
-gulp.task("create-test-translation", () =>
+const createTestTranslation = () =>
  env.isProdBuild()
    ? Promise.resolve()
    : gulp
-        .src(path.join(paths.translations_src, "en.json"))
-        .pipe(transform((data, _file) => recursiveEmpty(data)))
-        .pipe(rename("test.json"))
-        .pipe(gulp.dest(workDir))
-);
+        .src(EN_SRC)
+        .pipe(new CustomJSON(null, testReviver))
+        .pipe(rename(`${TEST_LOCALE}.json`))
+        .pipe(gulp.dest(workDir));

 /**
 * This task will build a master translation file, to be used as the base for
@@ -159,279 +163,174 @@ gulp.task("create-test-translation", () =>
 * project is buildable immediately after merging new translation keys, since
 * the Lokalise update to translations/en.json will not happen immediately.
 */
-gulp.task("build-master-translation", () => {
-  const src = [path.join(paths.translations_src, "en.json")];
+const createMasterTranslation = () =>
+  gulp
+    .src([EN_SRC, ...(mergeBackend ? [`${inBackendDir}/en.json`] : [])])
+    .pipe(new CustomJSON(lokaliseTransform))
+    .pipe(new MergeJSON("en"))
+    .pipe(gulp.dest(workDir));

-  if (mergeBackend) {
-    src.push(path.join(inBackendDir, "en.json"));
+const FRAGMENTS = ["base"];
+
+const setFragment = (fragment) => async () => {
+  FRAGMENTS[0] = fragment;
+};
+
+const panelFragment = (fragment) =>
+  fragment !== "base" &&
+  fragment !== "supervisor" &&
+  fragment !== "landing-page";
+
+const HASHES = new Map();
+
+const createTranslations = async () => {
+  // Parse and store the master to avoid repeating this for each locale, then
+  // add the panel fragments when processing the app.
+  const enMaster = JSON.parse(await readFile(`${workDir}/en.json`, "utf-8"));
+  if (FRAGMENTS[0] === "base") {
+    FRAGMENTS.push(...Object.keys(enMaster.ui.panel));
  }

-  return gulp
-    .src(src)
-    .pipe(transform((data, file) => lokaliseTransform(data, data, file)))
+  // The downstream pipeline is setup first.  It hashes the merged data for
+  // each locale, then fragmentizes and flattens the data for final output.
+  const translationFiles = await glob([
+    `${inFrontendDir}/!(en).json`,
+    ...(env.isProdBuild() ? [] : [`${workDir}/${TEST_LOCALE}.json`]),
+  ]);
+  const hashStream = new Transform({
+    objectMode: true,
+    transform: async (file, _, callback) => {
+      const hash = env.isProdBuild()
+        ? createHash("md5").update(file.contents).digest("hex")
+        : "dev";
+      HASHES.set(file.stem, hash);
+      file.stem += `-${hash}`;
+      callback(null, file);
+    },
+  }).setMaxListeners(translationFiles.length + 1);
+  const fragmentsStream = hashStream
    .pipe(
-      merge({
-        fileName: "en.json",
-      })
-    )
-    .pipe(gulp.dest(fullDir));
-});
-
-gulp.task("build-merged-translations", () =>
-  gulp
-    .src([
-      inFrontendDir + "/*.json",
-      "!" + inFrontendDir + "/en.json",
-      ...(env.isProdBuild() ? [] : [workDir + "/test.json"]),
-    ])
-    .pipe(transform((data, file) => lokaliseTransform(data, data, file)))
-    .pipe(
-      flatmap((stream, file) => {
-        // For each language generate a merged json file. It begins with the master
-        // translation as a failsafe for untranslated strings, and merges all parent
-        // tags into one file for each specific subtag
-        //
-        // TODO: This is a naive interpretation of BCP47 that should be improved.
-        //       Will be OK for now as long as we don't have anything more complicated
-        //       than a base translation + region.
-        const tr = path.basename(file.history[0], ".json");
-        const subtags = tr.split("-");
-        const src = [fullDir + "/en.json"];
-        for (let i = 1; i <= subtags.length; i++) {
-          const lang = subtags.slice(0, i).join("-");
-          if (lang === "test") {
-            src.push(workDir + "/test.json");
-          } else if (lang !== "en") {
-            src.push(inFrontendDir + "/" + lang + ".json");
-            if (mergeBackend) {
-              src.push(inBackendDir + "/" + lang + ".json");
-            }
+      new CustomJSON((data) =>
+        FRAGMENTS.map((fragment) => {
+          switch (fragment) {
+            case "base":
+              // Remove the panels and supervisor to create the base translations
+              return [
+                flatten({
+                  ...data,
+                  ui: { ...data.ui, panel: undefined },
+                  supervisor: undefined,
+                }),
+                "",
+              ];
+            case "supervisor":
+              // Supervisor key is at the top level
+              return [flatten(data.supervisor), ""];
+            case "landing-page":
+              // landing-page key is at the top level
+              return [flatten(data["landing-page"]), ""];
+            default:
+              // Create a fragment with only the given panel
+              return [
+                flatten(data.ui.panel[fragment], `ui.panel.${fragment}.`),
+                fragment,
+              ];
          }
-        }
-        return gulp
-          .src(src, { allowEmpty: true })
-          .pipe(transform((data) => emptyFilter(data)))
-          .pipe(
-            merge({
-              fileName: tr + ".json",
-            })
-          )
-          .pipe(gulp.dest(fullDir));
-      })
-    )
-);
-
-let taskName;
-
-const splitTasks = [];
-TRANSLATION_FRAGMENTS.forEach((fragment) => {
-  taskName = "build-translation-fragment-" + fragment;
-  gulp.task(taskName, () =>
-    // Return only the translations for this fragment.
-    gulp
-      .src(fullDir + "/*.json")
-      .pipe(
-        transform((data) => ({
-          ui: {
-            panel: {
-              [fragment]: data.ui.panel[fragment],
-            },
-          },
-        }))
-      )
-      .pipe(gulp.dest(workDir + "/" + fragment))
-  );
-  splitTasks.push(taskName);
-});
-
-taskName = "build-translation-core";
-gulp.task(taskName, () =>
-  // Remove the fragment translations from the core translation.
-  gulp
-    .src(fullDir + "/*.json")
-    .pipe(
-      transform((data, _file) => {
-        TRANSLATION_FRAGMENTS.forEach((fragment) => {
-          delete data.ui.panel[fragment];
-        });
-        delete data.supervisor;
-        return data;
-      })
-    )
-    .pipe(gulp.dest(coreDir))
-);
-
-splitTasks.push(taskName);
-
-gulp.task("build-flattened-translations", () =>
-  // Flatten the split versions of our translations, and move them into outDir
-  gulp
-    .src(
-      TRANSLATION_FRAGMENTS.map(
-        (fragment) => workDir + "/" + fragment + "/*.json"
-      ).concat(coreDir + "/*.json"),
-      { base: workDir }
-    )
-    .pipe(
-      transform((data) =>
-        // Polymer.AppLocalizeBehavior requires flattened json
-        flatten(data)
+        })
      )
    )
-    .pipe(
-      rename((filePath) => {
-        if (filePath.dirname === "core") {
-          filePath.dirname = "";
+    .pipe(gulp.dest(outDir));
+
+  // Send the English master downstream first, then for each other locale
+  // generate merged JSON data to continue piping. It begins with the master
+  // translation as a failsafe for untranslated strings, and merges all parent
+  // tags into one file for each specific subtag
+  //
+  // TODO: This is a naive interpretation of BCP47 that should be improved.
+  //       Will be OK for now as long as we don't have anything more complicated
+  // than a base translation + region.
+  const masterStream = gulp
+    .src(`${workDir}/en.json`)
+    .pipe(new PassThrough({ objectMode: true }));
+  masterStream.pipe(hashStream, { end: false });
+  const mergesFinished = [finished(masterStream)];
+  for (const translationFile of translationFiles) {
+    const locale = basename(translationFile, ".json");
+    const subtags = locale.split("-");
+    const mergeFiles = [];
+    for (let i = 1; i <= subtags.length; i++) {
+      const lang = subtags.slice(0, i).join("-");
+      if (lang === TEST_LOCALE) {
+        mergeFiles.push(`${workDir}/${TEST_LOCALE}.json`);
+      } else if (lang !== "en") {
+        mergeFiles.push(`${inFrontendDir}/${lang}.json`);
+        if (mergeBackend) {
+          mergeFiles.push(`${inBackendDir}/${lang}.json`);
        }
-        // In dev we create the file with the fake hash in the filename
-        if (!env.isProdBuild()) {
-          filePath.basename += "-dev";
-        }
-      })
-    )
-    .pipe(gulp.dest(outDir))
-);
-
-const fingerprints = {};
-
-gulp.task("build-translation-fingerprints", () => {
-  // Fingerprint full file of each language
-  const files = readdirSync(fullDir);
-
-  for (let i = 0; i < files.length; i++) {
-    fingerprints[files[i].split(".")[0]] = {
-      // In dev we create fake hashes
-      hash: env.isProdBuild()
-        ? createHash("md5")
-            .update(readFileSync(path.join(fullDir, files[i]), "utf-8"))
-            .digest("hex")
-        : "dev",
-    };
-  }
-
-  // In dev we create the file with the fake hash in the filename
-  if (env.isProdBuild()) {
-    mapFiles(outDir, ".json", (filename) => {
-      const parsed = path.parse(filename);
-
-      // nl.json -> nl-<hash>.json
-      if (!(parsed.name in fingerprints)) {
-        throw new Error(`Unable to find hash for ${filename}`);
      }
-
-      renameSync(
-        filename,
-        `${parsed.dir}/${parsed.name}-${fingerprints[parsed.name].hash}${
-          parsed.ext
-        }`
-      );
-    });
+    }
+    const mergeStream = gulp
+      .src(mergeFiles, { allowEmpty: true })
+      .pipe(new MergeJSON(locale, enMaster, emptyReviver));
+    mergesFinished.push(finished(mergeStream));
+    mergeStream.pipe(hashStream, { end: false });
  }

-  const stream = source("translationFingerprints.json");
-  stream.write(JSON.stringify(fingerprints));
-  process.nextTick(() => stream.end());
-  return stream.pipe(vinylBuffer()).pipe(gulp.dest(workDir));
-});
+  // Wait for all merges to finish, then it's safe to end writing to the
+  // downstream pipeline and wait for all fragments to finish writing.
+  await Promise.all(mergesFinished);
+  hashStream.end();
+  await finished(fragmentsStream);
+};

-gulp.task("build-translation-fragment-supervisor", () =>
+const writeTranslationMetaData = () =>
  gulp
-    .src(fullDir + "/*.json")
-    .pipe(transform((data) => data.supervisor))
+    .src([`${paths.translations_src}/translationMetadata.json`])
    .pipe(
-      rename((filePath) => {
-        // In dev we create the file with the fake hash in the filename
+      new CustomJSON((meta) => {
+        // Add the test translation in development.
        if (!env.isProdBuild()) {
-          filePath.basename += "-dev";
+          meta[TEST_LOCALE] = { nativeName: "Translation Test" };
        }
-      })
-    )
-    .pipe(gulp.dest(workDir + "/supervisor"))
-);
-
-gulp.task("build-translation-flatten-supervisor", () =>
-  gulp
-    .src(workDir + "/supervisor/*.json")
-    .pipe(
-      transform((data) =>
-        // Polymer.AppLocalizeBehavior requires flattened json
-        flatten(data)
-      )
-    )
-    .pipe(gulp.dest(outDir))
-);
-
-gulp.task("build-translation-write-metadata", () =>
-  gulp
-    .src([
-      path.join(paths.translations_src, "translationMetadata.json"),
-      ...(env.isProdBuild() ? [] : [workDir + "/testMetadata.json"]),
-      workDir + "/translationFingerprints.json",
-    ])
-    .pipe(merge({}))
-    .pipe(
-      transform((data) => {
-        const newData = {};
-        Object.entries(data).forEach(([key, value]) => {
-          // Filter out translations without native name.
-          if (value.nativeName) {
-            newData[key] = value;
-          } else {
+        // Filter out locales without a native name, and add the hashes.
+        for (const locale of Object.keys(meta)) {
+          if (!meta[locale].nativeName) {
+            meta[locale] = undefined;
            console.warn(
-              `Skipping language ${key}. Native name was not translated.`
+              `Skipping locale ${locale} because native name is not translated.`
            );
+          } else {
+            meta[locale].hash = HASHES.get(locale);
          }
-        });
-        return newData;
+        }
+        return {
+          fragments: FRAGMENTS.filter(panelFragment),
+          translations: meta,
+        };
      })
    )
-    .pipe(
-      transform((data) => ({
-        fragments: TRANSLATION_FRAGMENTS,
-        translations: data,
-      }))
-    )
-    .pipe(rename("translationMetadata.json"))
-    .pipe(gulp.dest(workDir))
-);
-
-gulp.task(
-  "create-translations",
-  gulp.series(
-    gulp.parallel("create-test-metadata", "create-test-translation"),
-    "build-master-translation",
-    "build-merged-translations",
-    gulp.parallel(...splitTasks),
-    "build-flattened-translations"
-  )
-);
+    .pipe(gulp.dest(workDir));

 gulp.task(
  "build-translations",
  gulp.series(
    gulp.parallel(
      "fetch-nightly-translations",
-      gulp.series("clean-translations", "ensure-translations-build-dir")
+      gulp.series("clean-translations", makeWorkDir)
    ),
-    "create-translations",
-    "build-translation-fingerprints",
-    "build-translation-write-metadata"
+    createTestTranslation,
+    createMasterTranslation,
+    createTranslations,
+    writeTranslationMetaData
  )
 );

 gulp.task(
  "build-supervisor-translations",
-  gulp.series(
-    gulp.parallel(
-      "fetch-nightly-translations",
-      gulp.series("clean-translations", "ensure-translations-build-dir")
-    ),
-    gulp.parallel("create-test-metadata", "create-test-translation"),
-    "build-master-translation",
-    "build-merged-translations",
-    "build-translation-fragment-supervisor",
-    "build-translation-flatten-supervisor",
-    "build-translation-fingerprints",
-    "build-translation-write-metadata"
-  )
+  gulp.series(setFragment("supervisor"), "build-translations")
+);
+
+gulp.task(
+  "build-landing-page-translations",
+  gulp.series(setFragment("landing-page"), "build-translations")
 );
@@ -1,10 +0,0 @@
-import gulp from "gulp";
-import { startDevServer } from "@web/dev-server";
-
-gulp.task("wds-watch-app", async () => {
-  startDevServer({
-    config: {
-      watch: true,
-    },
-  });
-});
@@ -33,6 +33,22 @@ module.exports = {
  ),
  gallery_output_static: path.resolve(__dirname, "../gallery/dist/static"),

+  landingPage_dir: path.resolve(__dirname, "../landing-page"),
+  landingPage_build: path.resolve(__dirname, "../landing-page/build"),
+  landingPage_output_root: path.resolve(__dirname, "../landing-page/dist"),
+  landingPage_output_latest: path.resolve(
+    __dirname,
+    "../landing-page/dist/frontend_latest"
+  ),
+  landingPage_output_es5: path.resolve(
+    __dirname,
+    "../landing-page/dist/frontend_es5"
+  ),
+  landingPage_output_static: path.resolve(
+    __dirname,
+    "../landing-page/dist/static"
+  ),
+
  hassio_dir: path.resolve(__dirname, "../hassio"),
  hassio_output_root: path.resolve(__dirname, "../hassio/build"),
  hassio_output_static: path.resolve(__dirname, "../hassio/build/static"),
@@ -1,14 +0,0 @@
-module.exports = function (opts = {}) {
-  const dontHash = opts.dontHash || new Set();
-
-  return {
-    name: "dont-hash",
-    renderChunk(_code, chunk, _options) {
-      if (!chunk.isEntry || !dontHash.has(chunk.name)) {
-        return null;
-      }
-      chunk.fileName = `${chunk.name}.js`;
-      return null;
-    },
-  };
-};
@@ -1,24 +0,0 @@
-module.exports = function (userOptions = {}) {
-  // Files need to be absolute paths.
-  // This only works if the file has no exports
-  // and only is imported for its side effects
-  const files = userOptions.files || [];
-
-  if (files.length === 0) {
-    return {
-      name: "ignore",
-    };
-  }
-
-  return {
-    name: "ignore",
-
-    load(id) {
-      return files.some((toIgnorePath) => id.startsWith(toIgnorePath))
-        ? {
-            code: "",
-          }
-        : null;
-    },
-  };
-};
@@ -1,34 +0,0 @@
-const url = require("url");
-
-const defaultOptions = {
-  publicPath: "",
-};
-
-module.exports = function (userOptions = {}) {
-  const options = { ...defaultOptions, ...userOptions };
-
-  return {
-    name: "manifest",
-    generateBundle(outputOptions, bundle) {
-      const manifest = {};
-
-      for (const chunk of Object.values(bundle)) {
-        if (!chunk.isEntry) {
-          continue;
-        }
-        // Add js extension to mimic Webpack manifest.
-        manifest[`${chunk.name}.js`] = url.resolve(
-          options.publicPath,
-          chunk.fileName
-        );
-      }
-
-      this.emitFile({
-        type: "asset",
-        source: JSON.stringify(manifest, undefined, 2),
-        name: "manifest.json",
-        fileName: "manifest.json",
-      });
-    },
-  };
-};
@@ -1,152 +0,0 @@
-// Worker plugin
-// Each worker will include all of its dependencies
-// instead of relying on an importer.
-
-// Forked from v.1.4.1
-// https://github.com/surma/rollup-plugin-off-main-thread
-/**
- * Copyright 2018 Google Inc. All Rights Reserved.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *     http://www.apache.org/licenses/LICENSE-2.0
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-const rollup = require("rollup");
-const path = require("path");
-const MagicString = require("magic-string");
-
-const defaultOpts = {
-  // A RegExp to find `new Workers()` calls. The second capture group _must_
-  // capture the provided file name without the quotes.
-  workerRegexp: /new Worker\((["'])(.+?)\1(,[^)]+)?\)/g,
-  plugins: ["node-resolve", "commonjs", "babel", "terser", "ignore"],
-};
-
-async function getBundledWorker(workerPath, rollupOptions) {
-  const bundle = await rollup.rollup({
-    ...rollupOptions,
-    input: {
-      worker: workerPath,
-    },
-  });
-  const { output } = await bundle.generate({
-    // Generates cleanest output, we shouldn't have any imports/exports
-    // that would be incompatible with ES5.
-    format: "es",
-    // We should not export anything. This will fail build if we are.
-    exports: "none",
-  });
-
-  let code;
-
-  for (const chunkOrAsset of output) {
-    if (chunkOrAsset.name === "worker") {
-      code = chunkOrAsset.code;
-    } else if (chunkOrAsset.type !== "asset") {
-      throw new Error("Unexpected extra output");
-    }
-  }
-
-  return code;
-}
-
-module.exports = function (opts = {}) {
-  opts = { ...defaultOpts, ...opts };
-
-  let rollupOptions;
-  let refIds;
-
-  return {
-    name: "hass-worker",
-
-    async buildStart(options) {
-      refIds = {};
-      rollupOptions = {
-        plugins: options.plugins.filter((plugin) =>
-          opts.plugins.includes(plugin.name)
-        ),
-      };
-    },
-
-    async transform(code, id) {
-      // Copy the regexp as they are stateful and this hook is async.
-      const workerRegexp = new RegExp(
-        opts.workerRegexp.source,
-        opts.workerRegexp.flags
-      );
-      if (!workerRegexp.test(code)) {
-        return undefined;
-      }
-
-      const ms = new MagicString(code);
-      // Reset the regexp
-      workerRegexp.lastIndex = 0;
-      for (;;) {
-        const match = workerRegexp.exec(code);
-        if (!match) {
-          break;
-        }
-
-        const workerFile = match[2];
-        let optionsObject = {};
-        // Parse the optional options object
-        if (match[3] && match[3].length > 0) {
-          // FIXME: ooooof!
-          // eslint-disable-next-line @typescript-eslint/no-implied-eval
-          optionsObject = new Function(`return ${match[3].slice(1)};`)();
-        }
-        delete optionsObject.type;
-
-        if (!/^.*\//.test(workerFile)) {
-          this.warn(
-            `Paths passed to the Worker constructor must be relative or absolute, i.e. start with /, ./ or ../ (just like dynamic import!). Ignoring "${workerFile}".`
-          );
-          continue;
-        }
-
-        // Find worker file and store it as a chunk with ID prefixed for our loader
-        // eslint-disable-next-line no-await-in-loop
-        const resolvedWorkerFile = (await this.resolve(workerFile, id)).id;
-        let chunkRefId;
-        if (resolvedWorkerFile in refIds) {
-          chunkRefId = refIds[resolvedWorkerFile];
-        } else {
-          this.addWatchFile(resolvedWorkerFile);
-          // eslint-disable-next-line no-await-in-loop
-          const source = await getBundledWorker(
-            resolvedWorkerFile,
-            rollupOptions
-          );
-          chunkRefId = refIds[resolvedWorkerFile] = this.emitFile({
-            name: path.basename(resolvedWorkerFile),
-            source,
-            type: "asset",
-          });
-        }
-
-        const workerParametersStartIndex = match.index + "new Worker(".length;
-        const workerParametersEndIndex =
-          match.index + match[0].length - ")".length;
-
-        ms.overwrite(
-          workerParametersStartIndex,
-          workerParametersEndIndex,
-          `import.meta.ROLLUP_FILE_URL_${chunkRefId}, ${JSON.stringify(
-            optionsObject
-          )}`
-        );
-      }
-
-      return {
-        code: ms.toString(),
-        map: ms.generateMap({ hires: true }),
-      };
-    },
-  };
-};
@@ -1,146 +0,0 @@
-const path = require("path");
-
-const commonjs = require("@rollup/plugin-commonjs");
-const resolve = require("@rollup/plugin-node-resolve");
-const json = require("@rollup/plugin-json");
-const { babel } = require("@rollup/plugin-babel");
-const replace = require("@rollup/plugin-replace");
-const visualizer = require("rollup-plugin-visualizer");
-const { string } = require("rollup-plugin-string");
-const { terser } = require("rollup-plugin-terser");
-const manifest = require("./rollup-plugins/manifest-plugin.cjs");
-const worker = require("./rollup-plugins/worker-plugin.cjs");
-const dontHashPlugin = require("./rollup-plugins/dont-hash-plugin.cjs");
-const ignore = require("./rollup-plugins/ignore-plugin.cjs");
-
-const bundle = require("./bundle.cjs");
-const paths = require("./paths.cjs");
-
-const extensions = [".js", ".ts"];
-
-/**
- * @param {Object} arg
- * @param { import("rollup").InputOption } arg.input
- */
-const createRollupConfig = ({
-  entry,
-  outputPath,
-  defineOverlay,
-  isProdBuild,
-  latestBuild,
-  isStatsBuild,
-  publicPath,
-  dontHash,
-  isWDS,
-}) => ({
-  /**
-   * @type { import("rollup").InputOptions }
-   */
-  inputOptions: {
-    input: entry,
-    // Some entry points contain no JavaScript. This setting silences a warning about that.
-    // https://rollupjs.org/configuration-options/#preserveentrysignatures
-    preserveEntrySignatures: false,
-    plugins: [
-      ignore({
-        files: bundle
-          .emptyPackages({ latestBuild })
-          // TEMP HACK: Makes Rollup build work again
-          .concat(
-            require.resolve(
-              "@webcomponents/scoped-custom-element-registry/scoped-custom-element-registry.min"
-            )
-          ),
-      }),
-      resolve({
-        extensions,
-        preferBuiltins: false,
-        browser: true,
-        rootDir: paths.polymer_dir,
-      }),
-      commonjs(),
-      json(),
-      babel({
-        ...bundle.babelOptions({ latestBuild, isProdBuild }),
-        extensions,
-        babelHelpers: isWDS ? "inline" : "bundled",
-      }),
-      string({
-        // Import certain extensions as strings
-        include: [path.join(paths.polymer_dir, "node_modules/**/*.css")],
-      }),
-      replace(bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })),
-      !isWDS &&
-        manifest({
-          publicPath,
-        }),
-      !isWDS && worker(),
-      !isWDS && dontHashPlugin({ dontHash }),
-      !isWDS && isProdBuild && terser(bundle.terserOptions({ latestBuild })),
-      !isWDS &&
-        isStatsBuild &&
-        visualizer({
-          // https://github.com/btd/rollup-plugin-visualizer#options
-          open: true,
-          sourcemap: true,
-        }),
-    ].filter(Boolean),
-  },
-  /**
-   * @type { import("rollup").OutputOptions }
-   */
-  outputOptions: {
-    // https://rollupjs.org/configuration-options/#output-dir
-    dir: outputPath,
-    // https://rollupjs.org/configuration-options/#output-format
-    format: latestBuild ? "es" : "systemjs",
-    // https://rollupjs.org/configuration-options/#output-externallivebindings
-    externalLiveBindings: false,
-    // https://rollupjs.org/configuration-options/#output-entryfilenames
-    // https://rollupjs.org/configuration-options/#output-chunkfilenames
-    // https://rollupjs.org/configuration-options/#output-assetfilenames
-    entryFileNames:
-      isProdBuild && !isStatsBuild ? "[name]-[hash].js" : "[name].js",
-    chunkFileNames: isProdBuild && !isStatsBuild ? "c.[hash].js" : "[name].js",
-    assetFileNames: isProdBuild && !isStatsBuild ? "a.[hash].js" : "[name].js",
-    // https://rollupjs.org/configuration-options/#output-sourcemap
-    sourcemap: isProdBuild ? true : "inline",
-  },
-});
-
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild, isWDS }) =>
-  createRollupConfig(
-    bundle.config.app({
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-      isWDS,
-    })
-  );
-
-const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
-  createRollupConfig(
-    bundle.config.demo({
-      isProdBuild,
-      latestBuild,
-      isStatsBuild,
-    })
-  );
-
-const createCastConfig = ({ isProdBuild, latestBuild }) =>
-  createRollupConfig(bundle.config.cast({ isProdBuild, latestBuild }));
-
-const createHassioConfig = ({ isProdBuild, latestBuild }) =>
-  createRollupConfig(bundle.config.hassio({ isProdBuild, latestBuild }));
-
-const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
-  createRollupConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
-
-module.exports = {
-  createAppConfig,
-  createDemoConfig,
-  createCastConfig,
-  createHassioConfig,
-  createGalleryConfig,
-  createRollupConfig,
-};
@@ -1,15 +1,13 @@
 const { existsSync } = require("fs");
 const path = require("path");
-const webpack = require("webpack");
+const rspack = require("@rspack/core");
+const { RsdoctorRspackPlugin } = require("@rsdoctor/rspack-plugin");
 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 { WebpackManifestPlugin } = require("rspack-manifest-plugin");
 const log = require("fancy-log");
-const WebpackBar = require("webpackbar");
-const {
-  TransformAsyncModulesPlugin,
-} = require("transform-async-modules-webpack-plugin");
+const WebpackBar = require("webpackbar/rspack");
 const paths = require("./paths.cjs");
 const bundle = require("./bundle.cjs");

@@ -27,7 +25,7 @@ class LogStartCompilePlugin {
  }
 }

-const createWebpackConfig = ({
+const createRspackConfig = ({
  name,
  entry,
  outputPath,
@@ -62,17 +60,25 @@ const createWebpackConfig = ({
      rules: [
        {
          test: /\.m?js$|\.ts$/,
-          use: {
+          use: (info) => ({
            loader: "babel-loader",
            options: {
-              ...bundle.babelOptions({ latestBuild, isProdBuild, isTestBuild }),
+              ...bundle.babelOptions({
+                latestBuild,
+                isProdBuild,
+                isTestBuild,
+                sw: info.issuerLayer === "sw",
+              }),
              cacheDirectory: !isProdBuild,
              cacheCompression: false,
            },
-          },
+          }),
          resolve: {
            fullySpecified: false,
          },
+          parser: {
+            worker: ["*context.audioWorklet.addModule()", "..."],
+          },
        },
        {
          test: /\.css$/,
@@ -91,11 +97,20 @@ const createWebpackConfig = ({
      moduleIds: isProdBuild && !isStatsBuild ? "deterministic" : "named",
      chunkIds: isProdBuild && !isStatsBuild ? "deterministic" : "named",
      splitChunks: {
-        // Disable splitting for web workers with ESM output
-        // Imports of external chunks are broken
-        chunks: latestBuild
-          ? (chunk) => !chunk.canBeInitial() && !/^.+-worker$/.test(chunk.name)
-          : undefined,
+        // Disable splitting for web workers and worklets because imports of
+        // external chunks are broken for:
+        chunks: !isProdBuild
+          ? // improve incremental build speed, but blows up bundle size
+            new RegExp(
+              `^(?!(${Object.keys(entry).join("|")}|.*work(?:er|let))$)`
+            )
+          : // - ESM output: https://github.com/webpack/webpack/issues/17014
+            // - Worklets use `importScripts`: https://github.com/webpack/webpack/issues/11543
+            (chunk) =>
+              !chunk.canBeInitial() &&
+              !new RegExp(
+                `^.+-work${latestBuild ? "(?:let|er)" : "let"}$`
+              ).test(chunk.name),
      },
    },
    plugins: [
@@ -104,10 +119,10 @@ const createWebpackConfig = ({
        // Only include the JS of entrypoints
        filter: (file) => file.isInitial && !file.name.endsWith(".map"),
      }),
-      new webpack.DefinePlugin(
+      new rspack.DefinePlugin(
        bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
      ),
-      new webpack.IgnorePlugin({
+      new rspack.IgnorePlugin({
        checkResource(resource, context) {
          // Only use ignore to intercept imports that we don't control
          // inside node_module dependencies.
@@ -139,7 +154,7 @@ const createWebpackConfig = ({
          );
        },
      }),
-      new webpack.NormalModuleReplacementPlugin(
+      new rspack.NormalModuleReplacementPlugin(
        new RegExp(
          bundle.emptyPackages({ latestBuild, isHassioBuild }).join("|")
        ),
@@ -155,12 +170,20 @@ const createWebpackConfig = ({
          stats: { assets: true, chunks: true, modules: true },
          transform: (stats) => JSON.stringify(filterStats(stats)),
        }),
-      !latestBuild &&
-        new TransformAsyncModulesPlugin({ browserslistEnv: "legacy" }),
+      isProdBuild &&
+        isStatsBuild &&
+        new RsdoctorRspackPlugin({
+          reportDir: path.join(paths.build_dir, "rsdoctor"),
+          features: ["plugins", "bundle"],
+          supports: {
+            generateTileGraph: true,
+          },
+        }),
    ].filter(Boolean),
    resolve: {
      extensions: [".ts", ".js", ".json"],
      alias: {
+        "lit/static-html$": "lit/static-html.js",
        "lit/decorators$": "lit/decorators.js",
        "lit/directive$": "lit/directive.js",
        "lit/directives/until$": "lit/directives/until.js",
@@ -171,6 +194,7 @@ const createWebpackConfig = ({
        "lit/directives/cache$": "lit/directives/cache.js",
        "lit/directives/repeat$": "lit/directives/repeat.js",
        "lit/directives/live$": "lit/directives/live.js",
+        "lit/directives/keyed$": "lit/directives/keyed.js",
        "lit/polyfill-support$": "lit/polyfill-support.js",
        "@lit-labs/virtualizer/layouts/grid":
          "@lit-labs/virtualizer/layouts/grid.js",
@@ -192,8 +216,6 @@ const createWebpackConfig = ({
        isProdBuild && !isStatsBuild ? "[id].[contenthash][ext]" : "[id][ext]",
      crossOriginLoading: "use-credentials",
      hashFunction: "xxhash64",
-      hashDigest: "base64url",
-      hashDigestLength: 11, // full length of 64 bit base64url
      path: outputPath,
      publicPath,
      // To silence warning in worker plugin
@@ -223,6 +245,7 @@ const createWebpackConfig = ({
      ),
    },
    experiments: {
+      layers: true,
      outputModule: true,
    },
  };
@@ -234,17 +257,17 @@ const createAppConfig = ({
  isStatsBuild,
  isTestBuild,
 }) =>
-  createWebpackConfig(
+  createRspackConfig(
    bundle.config.app({ isProdBuild, latestBuild, isStatsBuild, isTestBuild })
  );

 const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
-  createWebpackConfig(
+  createRspackConfig(
    bundle.config.demo({ isProdBuild, latestBuild, isStatsBuild })
  );

 const createCastConfig = ({ isProdBuild, latestBuild }) =>
-  createWebpackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
+  createRspackConfig(bundle.config.cast({ isProdBuild, latestBuild }));

 const createHassioConfig = ({
  isProdBuild,
@@ -252,7 +275,7 @@ const createHassioConfig = ({
  isStatsBuild,
  isTestBuild,
 }) =>
-  createWebpackConfig(
+  createRspackConfig(
    bundle.config.hassio({
      isProdBuild,
      latestBuild,
@@ -262,7 +285,10 @@ const createHassioConfig = ({
  );

 const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
-  createWebpackConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
+  createRspackConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
+
+const createLandingPageConfig = ({ isProdBuild, latestBuild }) =>
+  createRspackConfig(bundle.config.landingPage({ isProdBuild, latestBuild }));

 module.exports = {
  createAppConfig,
@@ -270,5 +296,6 @@ module.exports = {
  createCastConfig,
  createHassioConfig,
  createGalleryConfig,
-  createWebpackConfig,
+  createRspackConfig,
+  createLandingPageConfig,
 };
@@ -1,16 +0,0 @@
-const path = require("path");
-const fs = require("fs");
-
-// Helper function to map recursively over files in a folder and it's subfolders
-module.exports.mapFiles = function mapFiles(startPath, filter, mapFunc) {
-  const files = fs.readdirSync(startPath);
-  for (let i = 0; i < files.length; i++) {
-    const filename = path.join(startPath, files[i]);
-    const stat = fs.lstatSync(filename);
-    if (stat.isDirectory()) {
-      mapFiles(filename, filter, mapFunc);
-    } else if (filename.indexOf(filter) >= 0) {
-      mapFunc(filename);
-    }
-  }
-};
@@ -25,7 +25,7 @@ Home Assistant Cast is made up of two separate applications:

 ### Setting dev variables

-Open `src/cast/dev_const.ts` and change `CAST_DEV_APP_ID` to the ID of the app you just created. And set the `CAST_DEV_HASS_URL` to the url of you development machine.
+Open `src/cast/dev_const.ts` and change `CAST_DEV_APP_ID` to the ID of the app you just created. And set the `CAST_DEV_HASS_URL` to the url of your development machine.

 ### Changing configuration

@@ -0,0 +1,5 @@
+"use strict";
+
+self.addEventListener("fetch", (event) => {
+  event.respondWith(fetch(event.request));
+});
@@ -1,10 +0,0 @@
-import rollup from "../build-scripts/rollup.cjs";
-import env from "../build-scripts/env.cjs";
-
-const config = rollup.createCastConfig({
-  isProdBuild: env.isProdBuild(),
-  latestBuild: true,
-  isStatsBuild: env.isStatsBuild(),
-});
-
-export default { ...config.inputOptions, output: config.outputOptions };
@@ -36,13 +36,7 @@
  </head>
  <body>
    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
-    <script>
-      <% for (const entry of latestEntryJS) { %>
-        import("<%= entry %>");
-      <% } %>
-      window.latestJS = true;
-    </script>
-    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
+    <%= renderTemplate("../../../src/html/_script_loader.html.template") %>
    <hc-layout subtitle="FAQ">
      <style>
        a {
@@ -145,7 +139,7 @@
        </p>
      </div>

-      <div class="section-header">Wat does Home Assistant Cast do?</div>
+      <div class="section-header">What does Home Assistant Cast do?</div>
      <div class="card-content">
        <p>
          Home Assistant Cast is a receiver application for the Chromecast. When
@@ -232,17 +226,5 @@ http:
        </p>
      </div>
    </hc-layout>
-
-    <script>
-      var _gaq = [["_setAccount", "UA-57927901-9"], ["_trackPageview"]];
-      (function (d, t) {
-        var g = d.createElement(t),
-          s = d.getElementsByTagName(t)[0];
-        g.src =
-          ("https:" == location.protocol ? "//ssl" : "//www") +
-          ".google-analytics.com/ga.js";
-        s.parentNode.insertBefore(g, s);
-      })(document, "script");
-    </script>
  </body>
 </html>
@@ -13,15 +13,9 @@
    <%= renderTemplate("_social_meta.html.template") %>
  </head>
  <body>
-    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
    <hc-connect></hc-connect>
-    <script>
-      <% for (const entry of latestEntryJS) { %>
-        import("<%= entry %>");
-      <% } %>
-      window.latestJS = true;
-    </script>
-    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
+    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
+    <%= renderTemplate("../../../src/html/_script_loader.html.template") %>
    <script>
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
@@ -14,22 +14,10 @@
        --background-color: #41bdf5;
      }
    </style>
-    <script>
-      var _gaq=[['_setAccount','UA-57927901-10'],['_trackPageview']];
-      (function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
-      g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';
-      s.parentNode.insertBefore(g,s)}(document,'script'));
-    </script>
  </head>
  <body>
-    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
    <cast-media-player></cast-media-player>
-    <script>
-      <% for (const entry of latestEntryJS) { %>
-        import("<%= entry %>");
-      <% } %>
-      window.latestJS = true;
-    </script>
-    <%= renderTemplate("../../../src/html/_script_load_es5.html.template") %>
+    <%= renderTemplate("../../../src/html/_js_base.html.template") %>
+    <%= renderTemplate("../../../src/html/_script_loader.html.template") %>
  </body>
 </html>
@@ -7,14 +7,7 @@
  <%= renderTemplate("../../../src/html/_style_base.html.template") %>
  <style>
    body {
-      background-color: white;
      font-size: initial;
    }
  </style>
-  <script>
-  var _gaq=[['_setAccount','UA-57927901-10'],['_trackPageview']];
-  (function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
-  g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';
-  s.parentNode.insertBefore(g,s)}(document,'script'));
-  </script>
 </html>
@@ -1,4 +1,3 @@
-import "../../../src/resources/safari-14-attachshadow-patch";
 import "./layout/hc-connect";

 import("../../../src/resources/ha-style");
@@ -1,11 +1,12 @@
 import "@material/mwc-button/mwc-button";
-import { mdiCast, mdiCastConnected } from "@mdi/js";
-import "@polymer/paper-item/paper-icon-item";
-import "@polymer/paper-listbox/paper-listbox";
-import { Auth, Connection } from "home-assistant-js-websocket";
-import { CSSResultGroup, LitElement, TemplateResult, css, html } from "lit";
+import "@material/mwc-list/mwc-list";
+import type { ActionDetail } from "@material/mwc-list/mwc-list";
+import { mdiCast, mdiCastConnected, mdiViewDashboard } from "@mdi/js";
+import type { Auth, Connection } from "home-assistant-js-websocket";
+import type { TemplateResult } from "lit";
+import { LitElement, css, html } from "lit";
 import { customElement, property, state } from "lit/decorators";
-import { CastManager } from "../../../../src/cast/cast_manager";
+import type { CastManager } from "../../../../src/cast/cast_manager";
 import {
  castSendShowLovelaceView,
  ensureConnectedCastSession,
@@ -24,10 +25,11 @@ import {
  getLovelaceCollection,
 } from "../../../../src/data/lovelace";
 import { isStrategyDashboard } from "../../../../src/data/lovelace/config/types";
-import { LovelaceViewConfig } from "../../../../src/data/lovelace/config/view";
+import type { LovelaceViewConfig } from "../../../../src/data/lovelace/config/view";
 import "../../../../src/layouts/hass-loading-screen";
 import { generateDefaultViewConfig } from "../../../../src/panels/lovelace/common/generate-lovelace-config";
 import "./hc-layout";
+import "../../../../src/components/ha-list-item";

@customElement("hc-cast")
 class HcCast extends LitElement {
@@ -83,34 +85,38 @@ class HcCast extends LitElement {
              `
            : html`
                <div class="section-header">PICK A VIEW</div>
-                <paper-listbox
-                  attr-for-selected="data-path"
-                  .selected=${this.castManager.status.lovelacePath || ""}
-                >
+                <mwc-list @action=${this._handlePickView} activatable>
                  ${(
                    this.lovelaceViews ?? [
                      generateDefaultViewConfig({}, {}, {}, {}, () => ""),
                    ]
                  ).map(
                    (view, idx) => html`
-                      <paper-icon-item
-                        @click=${this._handlePickView}
-                        data-path=${view.path || idx}
+                      <ha-list-item
+                        graphic="avatar"
+                        .activated=${this.castManager.status?.lovelacePath ===
+                        (view.path ?? idx)}
+                        .selected=${this.castManager.status?.lovelacePath ===
+                        (view.path ?? idx)}
                      >
+                        ${view.title || view.path || "Unnamed view"}
                        ${view.icon
                          ? html`
                              <ha-icon
                                .icon=${view.icon}
-                                slot="item-icon"
+                                slot="graphic"
                              ></ha-icon>
                            `
-                          : ""}
-                        ${view.title || view.path}
-                      </paper-icon-item>
+                          : html`<ha-svg-icon
+                              slot="item-icon"
+                              .path=${mdiViewDashboard}
+                            ></ha-svg-icon>`}
+                      </ha-list-item>
                    `
-                  )}
-                </paper-listbox>
+                  )}</mwc-list
+                >
              `}
+
        <div class="card-actions">
          ${this.castManager.status
            ? html`
@@ -182,8 +188,8 @@ class HcCast extends LitElement {
    this.castManager.requestSession();
  }

-  private async _handlePickView(ev: Event) {
-    const path = (ev.currentTarget as any).getAttribute("data-path");
+  private async _handlePickView(ev: CustomEvent<ActionDetail>) {
+    const path = this.lovelaceViews![ev.detail.index].path ?? ev.detail.index;
    await ensureConnectedCastSession(this.castManager!, this.auth!);
    castSendShowLovelaceView(this.castManager, this.auth.data.hassUrl, path);
  }
@@ -197,85 +203,72 @@ class HcCast extends LitElement {
      }
      this.connection.close();
      location.reload();
-    } catch (err: any) {
+    } catch (_err: any) {
      alert("Unable to log out!");
    }
  }

-  static get styles(): CSSResultGroup {
-    return css`
-      .center-item {
-        display: flex;
-        justify-content: space-around;
-      }
+  static styles = css`
+    .center-item {
+      display: flex;
+      justify-content: space-around;
+    }

-      .action-item {
-        display: flex;
-        align-items: center;
-        justify-content: space-between;
-      }
+    .action-item {
+      display: flex;
+      align-items: center;
+      justify-content: space-between;
+    }

-      .question {
-        position: relative;
-        padding: 8px 16px;
-      }
+    .question {
+      position: relative;
+      padding: 8px 16px;
+    }

-      .question:before {
-        border-radius: 4px;
-        position: absolute;
-        top: 0;
-        right: 0;
-        bottom: 0;
-        left: 0;
-        pointer-events: none;
-        content: "";
-        background-color: var(--primary-color);
-        opacity: 0.12;
-        will-change: opacity;
-      }
+    .question:before {
+      border-radius: 4px;
+      position: absolute;
+      top: 0;
+      right: 0;
+      bottom: 0;
+      left: 0;
+      pointer-events: none;
+      content: "";
+      background-color: var(--primary-color);
+      opacity: 0.12;
+      will-change: opacity;
+    }

-      .connection,
-      .connection a {
-        color: var(--secondary-text-color);
-      }
+    .connection,
+    .connection a {
+      color: var(--secondary-text-color);
+    }

-      mwc-button ha-svg-icon {
-        margin-right: 8px;
-        margin-inline-end: 8px;
-        margin-inline-start: initial;
-        height: 18px;
-      }
+    mwc-button ha-svg-icon {
+      margin-right: 8px;
+      margin-inline-end: 8px;
+      margin-inline-start: initial;
+      height: 18px;
+    }

-      paper-listbox {
-        padding-top: 0;
-      }
+    ha-list-item ha-icon,
+    ha-list-item ha-svg-icon {
+      padding: 12px;
+      color: var(--secondary-text-color);
+    }

-      paper-listbox ha-icon {
-        padding: 12px;
-        color: var(--secondary-text-color);
-      }
+    :host([hide-icons]) ha-icon {
+      display: none;
+    }

-      paper-icon-item {
-        cursor: pointer;
-      }
+    .spacer {
+      flex: 1;
+    }

-      paper-icon-item[disabled] {
-        cursor: initial;
-      }
-
-      :host([hide-icons]) paper-icon-item {
-        --paper-item-icon-width: 0px;
-      }
-
-      .spacer {
-        flex: 1;
-      }
-
-      .card-content a {
-        color: var(--primary-color);
-      }
-    `;
-  }
+    .card-content a {
+      color: var(--primary-color);
+    }
+  `;
 }

 declare global {
@@ -1,19 +1,23 @@
 import "@material/mwc-button";
 import { mdiCastConnected, mdiCast } from "@mdi/js";
-import {
+import type {
  Auth,
  Connection,
+  getAuthOptions,
+} from "home-assistant-js-websocket";
+import {
  createConnection,
  ERR_CANNOT_CONNECT,
  ERR_HASS_HOST_REQUIRED,
  ERR_INVALID_AUTH,
  ERR_INVALID_HTTPS_TO_HTTP,
  getAuth,
-  getAuthOptions,
 } from "home-assistant-js-websocket";
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
 import { customElement, state } from "lit/decorators";
-import { CastManager, getCastManager } from "../../../../src/cast/cast_manager";
+import type { CastManager } from "../../../../src/cast/cast_manager";
+import { getCastManager } from "../../../../src/cast/cast_manager";
 import { castSendShowDemo } from "../../../../src/cast/receiver_messages";
 import {
  loadTokens,
@@ -211,7 +215,7 @@ export class HcConnect extends LitElement {
    let url: URL;
    try {
      url = new URL(value);
-    } catch (err: any) {
+    } catch (_err: any) {
      this.error = "Invalid URL";
      return;
    }
@@ -248,7 +252,7 @@ export class HcConnect extends LitElement {
      this.loading = false;
      return;
    } finally {
-      // Clear url if we have a auth callback in url.
+      // Clear url if we have an auth callback in url.
      if (location.search.includes("auth_callback=1")) {
        history.replaceState(null, "", location.pathname);
      }
@@ -284,41 +288,39 @@ export class HcConnect extends LitElement {
    try {
      saveTokens(null);
      location.reload();
-    } catch (err: any) {
+    } catch (_err: any) {
      alert("Unable to log out!");
    }
  }

-  static get styles(): CSSResultGroup {
-    return css`
-      .card-content a {
-        color: var(--primary-color);
-      }
-      .card-actions a {
-        text-decoration: none;
-      }
-      .error {
-        color: red;
-        font-weight: bold;
-      }
+  static styles = css`
+    .card-content a {
+      color: var(--primary-color);
+    }
+    .card-actions a {
+      text-decoration: none;
+    }
+    .error {
+      color: red;
+      font-weight: bold;
+    }

-      .error a {
-        color: darkred;
-      }
+    .error a {
+      color: darkred;
+    }

-      mwc-button ha-svg-icon {
-        margin-left: 8px;
-      }
+    mwc-button ha-svg-icon {
+      margin-left: 8px;
+    }

-      .spacer {
-        flex: 1;
-      }
+    .spacer {
+      flex: 1;
+    }

-      ha-textfield {
-        width: 100%;
-      }
-    `;
-  }
+    ha-textfield {
+      width: 100%;
+    }
+  `;
 }

 declare global {
@@ -1,10 +1,7 @@
-import {
-  Auth,
-  Connection,
-  getUser,
-  HassUser,
-} from "home-assistant-js-websocket";
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import type { Auth, Connection, HassUser } from "home-assistant-js-websocket";
+import { getUser } from "home-assistant-js-websocket";
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
 import "../../../../src/components/ha-card";

@@ -66,96 +63,94 @@ class HcLayout extends LitElement {
    }
  }

-  static get styles(): CSSResultGroup {
-    return css`
+  static styles = css`
+    :host {
+      display: flex;
+      min-height: 100%;
+      align-items: center;
+      justify-content: center;
+      flex-direction: column;
+    }
+
+    ha-card {
+      display: flex;
+      width: 100%;
+      max-width: 500px;
+    }
+
+    .layout {
+      display: flex;
+      flex-direction: column;
+    }
+
+    .card-header {
+      color: var(--ha-card-header-color, var(--primary-text-color));
+      font-family: var(--ha-card-header-font-family, inherit);
+      font-size: var(--ha-card-header-font-size, 24px);
+      letter-spacing: -0.012em;
+      line-height: 32px;
+      padding: 24px 16px 16px;
+      display: block;
+      margin: 0;
+    }
+
+    .hero {
+      border-radius: 4px 4px 0 0;
+    }
+    .subtitle {
+      font-size: 14px;
+      color: var(--secondary-text-color);
+      line-height: initial;
+    }
+    .subtitle a {
+      color: var(--secondary-text-color);
+    }
+
+    :host ::slotted(.card-content:not(:first-child)),
+    slot:not(:first-child)::slotted(.card-content) {
+      padding-top: 0px;
+      margin-top: -8px;
+    }
+
+    :host ::slotted(.section-header) {
+      font-weight: 500;
+      padding: 4px 16px;
+      text-transform: uppercase;
+    }
+
+    :host ::slotted(.card-content) {
+      padding: 16px;
+      flex: 1;
+    }
+
+    :host ::slotted(.card-actions) {
+      border-top: 1px solid #e8e8e8;
+      padding: 5px 16px;
+      display: flex;
+    }
+
+    img {
+      width: 100%;
+    }
+
+    .footer {
+      text-align: center;
+      font-size: 12px;
+      padding: 8px 0 24px;
+      color: var(--secondary-text-color);
+    }
+    .footer a {
+      color: var(--secondary-text-color);
+    }
+
+    @media all and (max-width: 500px) {
      :host {
-        display: flex;
-        min-height: 100%;
-        align-items: center;
-        justify-content: center;
-        flex-direction: column;
+        justify-content: flex-start;
+        min-height: 90%;
+        margin-bottom: 30px;
      }
-
-      ha-card {
-        display: flex;
-        width: 100%;
-        max-width: 500px;
-      }
-
-      .layout {
-        display: flex;
-        flex-direction: column;
-      }
-
-      .card-header {
-        color: var(--ha-card-header-color, --primary-text-color);
-        font-family: var(--ha-card-header-font-family, inherit);
-        font-size: var(--ha-card-header-font-size, 24px);
-        letter-spacing: -0.012em;
-        line-height: 32px;
-        padding: 24px 16px 16px;
-        display: block;
-        margin: 0;
-      }
-
-      .hero {
-        border-radius: 4px 4px 0 0;
-      }
-      .subtitle {
-        font-size: 14px;
-        color: var(--secondary-text-color);
-        line-height: initial;
-      }
-      .subtitle a {
-        color: var(--secondary-text-color);
-      }
-
-      :host ::slotted(.card-content:not(:first-child)),
-      slot:not(:first-child)::slotted(.card-content) {
-        padding-top: 0px;
-        margin-top: -8px;
-      }
-
-      :host ::slotted(.section-header) {
-        font-weight: 500;
-        padding: 4px 16px;
-        text-transform: uppercase;
-      }
-
-      :host ::slotted(.card-content) {
-        padding: 16px;
-        flex: 1;
-      }
-
-      :host ::slotted(.card-actions) {
-        border-top: 1px solid #e8e8e8;
-        padding: 5px 16px;
-        display: flex;
-      }
-
-      img {
-        width: 100%;
-      }
-
-      .footer {
-        text-align: center;
-        font-size: 12px;
-        padding: 8px 0 24px;
-        color: var(--secondary-text-color);
-      }
-      .footer a {
-        color: var(--secondary-text-color);
-      }
-
-      @media all and (max-width: 500px) {
-        :host {
-          justify-content: flex-start;
-          min-height: 90%;
-          margin-bottom: 30px;
-        }
-      }
-    `;
-  }
+    }
+  `;
 }

 declare global {
@@ -1,4 +1,5 @@
-import { convertEntities, Entity } from "../../../../src/fake_data/entity";
+import type { Entity } from "../../../../src/fake_data/entity";
+import { convertEntities } from "../../../../src/fake_data/entity";

 export const castDemoEntities: () => Entity[] = () =>
  convertEntities({
@@ -1,5 +1,5 @@
-import { LovelaceCardConfig } from "../../../../src/data/lovelace/config/card";
-import { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
+import type { LovelaceCardConfig } from "../../../../src/data/lovelace/config/card";
+import type { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
 import { castContext } from "../cast_context";

 export const castDemoLovelace: () => LovelaceConfig = () => {
@@ -1,10 +1,10 @@
 import { framework } from "./cast_framework";
 import { CAST_NS } from "../../../src/cast/const";
-import { HassMessage } from "../../../src/cast/receiver_messages";
+import type { HassMessage } from "../../../src/cast/receiver_messages";
 import "../../../src/resources/custom-card-support";
 import { castContext } from "./cast_context";
 import { HcMain } from "./layout/hc-main";
-import { ReceivedMessage } from "./types";
+import type { ReceivedMessage } from "./types";

 const lovelaceController = new HcMain();
 document.body.append(lovelaceController);
@@ -1,13 +1,11 @@
 import { html, nothing } from "lit";
 import { customElement, property, state } from "lit/decorators";
 import { mockHistory } from "../../../../demo/src/stubs/history";
-import { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
-import {
-  MockHomeAssistant,
-  provideHass,
-} from "../../../../src/fake_data/provide_hass";
+import type { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
+import type { MockHomeAssistant } from "../../../../src/fake_data/provide_hass";
+import { provideHass } from "../../../../src/fake_data/provide_hass";
 import { HassElement } from "../../../../src/state/hass-element";
-import { HomeAssistant } from "../../../../src/types";
+import type { HomeAssistant } from "../../../../src/types";
 import { castDemoEntities } from "../demo/cast-demo-entities";
 import { castDemoLovelace } from "../demo/cast-demo-lovelace";
 import "./hc-lovelace";
@@ -1,6 +1,7 @@
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
-import { HomeAssistant } from "../../../../src/types";
+import type { HomeAssistant } from "../../../../src/types";

@customElement("hc-launch-screen")
 class HcLaunchScreen extends LitElement {
@@ -23,31 +24,29 @@ class HcLaunchScreen extends LitElement {
    `;
  }

-  static get styles(): CSSResultGroup {
-    return css`
-      :host {
-        display: block;
-        height: 100vh;
-        background-color: #f2f4f9;
-        font-size: 24px;
-      }
-      .container {
-        display: flex;
-        flex-direction: column;
-        text-align: center;
-        align-items: center;
-        height: 100%;
-        justify-content: space-evenly;
-      }
-      img {
-        max-width: 80%;
-        object-fit: cover;
-      }
-      .status {
-        color: #1d2126;
-      }
-    `;
-  }
+  static styles = css`
+    :host {
+      display: block;
+      height: 100vh;
+      background-color: #f2f4f9;
+      font-size: 24px;
+    }
+    .container {
+      display: flex;
+      flex-direction: column;
+      text-align: center;
+      align-items: center;
+      height: 100%;
+      justify-content: space-evenly;
+    }
+    img {
+      max-width: 80%;
+      object-fit: cover;
+    }
+    .status {
+      color: #1d2126;
+    }
+  `;
 }

 declare global {
@@ -1,11 +1,14 @@
-import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
-import { customElement, property, query } from "lit/decorators";
+import { css, html, LitElement, type TemplateResult } from "lit";
+import { customElement, property } from "lit/decorators";
 import { fireEvent } from "../../../../src/common/dom/fire_event";
-import { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
-import { Lovelace } from "../../../../src/panels/lovelace/types";
+import type { LovelaceConfig } from "../../../../src/data/lovelace/config/types";
+import { getPanelTitleFromUrlPath } from "../../../../src/data/panel";
+import type { Lovelace } from "../../../../src/panels/lovelace/types";
 import "../../../../src/panels/lovelace/views/hui-view";
-import { HomeAssistant } from "../../../../src/types";
+import "../../../../src/panels/lovelace/views/hui-view-container";
+import type { HomeAssistant } from "../../../../src/types";
 import "./hc-launch-screen";
+import "../../../../src/panels/lovelace/views/hui-view-background";

 (window as any).loadCardHelpers = () =>
  import("../../../../src/panels/lovelace/custom-card-helpers");
@@ -17,11 +20,9 @@ class HcLovelace extends LitElement {
  @property({ attribute: false })
  public lovelaceConfig!: LovelaceConfig;

-  @property() public viewPath?: string | number | null;
+  @property({ attribute: false }) public viewPath?: string | number | null;

-  @property() public urlPath: string | null = null;
-
-  @query("hui-view") private _huiView?: HTMLElement;
+  @property({ attribute: false }) public urlPath: string | null = null;

  protected render(): TemplateResult {
    const index = this._viewIndex;
@@ -44,13 +45,22 @@ class HcLovelace extends LitElement {
      saveConfig: async () => undefined,
      deleteConfig: async () => undefined,
      setEditMode: () => undefined,
+      showToast: () => undefined,
    };
+
+    const viewConfig = this.lovelaceConfig.views[index];
+    const background = viewConfig.background || this.lovelaceConfig.background;
+
    return html`
-      <hui-view
-        .hass=${this.hass}
-        .lovelace=${lovelace}
-        .index=${index}
-      ></hui-view>
+      <hui-view-container .hass=${this.hass} .theme=${viewConfig.theme}>
+        <hui-view-background .hass=${this.hass} .background=${background}>
+        </hui-view-background>
+        <hui-view
+          .hass=${this.hass}
+          .lovelace=${lovelace}
+          .index=${index}
+        ></hui-view>
+      </hui-view-container>
    `;
  }

@@ -61,7 +71,12 @@ class HcLovelace extends LitElement {
      const index = this._viewIndex;

      if (index !== undefined) {
-        const dashboardTitle = this.lovelaceConfig.title || this.urlPath;
+        const title = getPanelTitleFromUrlPath(
+          this.hass,
+          this.urlPath || "lovelace"
+        );
+
+        const dashboardTitle = title || this.urlPath;

        const viewTitle =
          this.lovelaceConfig.views[index].title ||
@@ -75,19 +90,6 @@ class HcLovelace extends LitElement {
                }${viewTitle || ""}`
              : undefined,
        });
-
-        const configBackground =
-          this.lovelaceConfig.views[index].background ||
-          this.lovelaceConfig.background;
-
-        if (configBackground) {
-          this._huiView!.style.setProperty(
-            "--lovelace-background",
-            configBackground
-          );
-        } else {
-          this._huiView!.style.removeProperty("--lovelace-background");
-        }
      }
    }
  }
@@ -109,24 +111,18 @@ class HcLovelace extends LitElement {
    return undefined;
  }

-  static get styles(): CSSResultGroup {
-    return css`
-      :host {
-        min-height: 100vh;
-        height: 0;
-        display: flex;
-        flex-direction: column;
-        box-sizing: border-box;
-        background: var(--primary-background-color);
-      }
-      :host > * {
-        flex: 1;
-      }
-      hui-view {
-        background: var(--lovelace-background, var(--primary-background-color));
-      }
-    `;
-  }
+  static styles = css`
+    hui-view-container {
+      display: flex;
+      position: relative;
+      min-height: 100vh;
+      box-sizing: border-box;
+    }
+    hui-view-container > * {
+      flex: 1 1 100%;
+      max-width: 100%;
+    }
+  `;
 }

 export interface CastViewChanged {
@@ -1,40 +1,40 @@
-import {
-  createConnection,
-  getAuth,
-  UnsubscribeFunc,
-} from "home-assistant-js-websocket";
-import { html, TemplateResult } from "lit";
+import type { UnsubscribeFunc } from "home-assistant-js-websocket";
+import { createConnection, getAuth } from "home-assistant-js-websocket";
+import type { TemplateResult } from "lit";
+import { html } from "lit";
 import { customElement, state } from "lit/decorators";
 import { CAST_NS } from "../../../../src/cast/const";
-import {
+import type {
  ConnectMessage,
  GetStatusMessage,
  HassMessage,
  ShowDemoMessage,
  ShowLovelaceViewMessage,
 } from "../../../../src/cast/receiver_messages";
-import {
-  ReceiverErrorCode,
+import type {
  ReceiverErrorMessage,
  ReceiverStatusMessage,
 } from "../../../../src/cast/sender_messages";
+import { ReceiverErrorCode } from "../../../../src/cast/sender_messages";
 import { atLeastVersion } from "../../../../src/common/config/version";
 import { isNavigationClick } from "../../../../src/common/dom/is-navigation-click";
 import {
  getLegacyLovelaceCollection,
  getLovelaceCollection,
 } from "../../../../src/data/lovelace";
-import {
-  isStrategyDashboard,
+import type {
  LegacyLovelaceConfig,
  LovelaceConfig,
  LovelaceDashboardStrategyConfig,
 } from "../../../../src/data/lovelace/config/types";
+import { isStrategyDashboard } from "../../../../src/data/lovelace/config/types";
 import { fetchResources } from "../../../../src/data/lovelace/resource";
 import { loadLovelaceResources } from "../../../../src/panels/lovelace/common/load-resources";
 import { HassElement } from "../../../../src/state/hass-element";
 import { castContext } from "../cast_context";
 import "./hc-launch-screen";
+import { getPanelTitleFromUrlPath } from "../../../../src/data/panel";
+import { checkLovelaceConfig } from "../../../../src/panels/lovelace/common/check-lovelace-config";

 const DEFAULT_CONFIG: LovelaceDashboardStrategyConfig = {
  strategy: {
@@ -144,10 +144,10 @@ export class HcMain extends HassElement {
    }

    if (senderId) {
-      this.sendMessage(senderId, status);
+      this._sendMessage(senderId, status);
    } else {
      for (const sender of castContext.getSenders()) {
-        this.sendMessage(sender.id, status);
+        this._sendMessage(sender.id, status);
      }
    }
  }
@@ -164,10 +164,10 @@ export class HcMain extends HassElement {
    };

    if (senderId) {
-      this.sendMessage(senderId, error);
+      this._sendMessage(senderId, error);
    } else {
      for (const sender of castContext.getSenders()) {
-        this.sendMessage(sender.id, error);
+        this._sendMessage(sender.id, error);
      }
    }
  }
@@ -359,8 +359,14 @@ export class HcMain extends HassElement {
  }

  private _handleNewLovelaceConfig(lovelaceConfig: LovelaceConfig) {
-    castContext.setApplicationState(lovelaceConfig.title || "");
-    this._lovelaceConfig = lovelaceConfig;
+    const title = getPanelTitleFromUrlPath(
+      this.hass!,
+      this._urlPath || "lovelace"
+    );
+    castContext.setApplicationState(title || "");
+    this._lovelaceConfig = checkLovelaceConfig(
+      lovelaceConfig
+    ) as LovelaceConfig;
  }

  private _handleShowDemo(_msg: ShowDemoMessage) {
@@ -388,7 +394,7 @@ export class HcMain extends HassElement {
    }
  }

-  private sendMessage(senderId: string, response: any) {
+  private _sendMessage(senderId: string, response: any) {
    castContext.sendCustomMessage(CAST_NS, senderId, response);
  }
 }
@@ -1,8 +0,0 @@
-import webpack from "../build-scripts/webpack.cjs";
-import env from "../build-scripts/env.cjs";
-
-export default webpack.createCastConfig({
-  isProdBuild: env.isProdBuild(),
-  isStatsBuild: env.isStatsBuild(),
-  latestBuild: true,
-});
@@ -0,0 +1,5 @@
+"use strict";
+
+self.addEventListener("fetch", (event) => {
+  event.respondWith(fetch(event.request));
+});
@@ -1,10 +0,0 @@
-import rollup from "../build-scripts/rollup.cjs";
-import env from "../build-scripts/env.cjs";
-
-const config = rollup.createDemoConfig({
-  isProdBuild: env.isProdBuild(),
-  latestBuild: true,
-  isStatsBuild: env.isStatsBuild(),
-});
-
-export default { ...config.inputOptions, output: config.outputOptions };
@@ -4,11 +4,6 @@
 # Stop on errors
 set -e

-cd "$(dirname "$0")/.."
+cd "$(dirname "$0")/../.."

-export STATS=1
-statsfile="compilation-stats-demo.json"
-
-./node_modules/.bin/webpack-cli --profile --node-env=production --json=$statsfile
-npx webpack-bundle-analyzer $statsfile dist/frontend_latest
-rm -f $statsfile
+./node_modules/.bin/gulp analyze-demo
@@ -1,5 +1,5 @@
 import { convertEntities } from "../../../../src/fake_data/entity";
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

 export const demoEntitiesArsaboo: DemoConfig["entities"] = (localize) =>
  convertEntities({
@@ -1,4 +1,4 @@
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";
 import { demoEntitiesArsaboo } from "./entities";
 import { demoLovelaceArsaboo } from "./lovelace";
 import { demoThemeArsaboo } from "./theme";
@@ -1,4 +1,4 @@
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

 export const demoLovelaceArsaboo: DemoConfig["lovelace"] = (localize) => ({
  title: "Home Assistant",
@@ -1,9 +1,9 @@
-import { MockHomeAssistant } from "../../../src/fake_data/provide_hass";
-import { Lovelace } from "../../../src/panels/lovelace/types";
+import type { MockHomeAssistant } from "../../../src/fake_data/provide_hass";
+import type { Lovelace } from "../../../src/panels/lovelace/types";
 import { energyEntities } from "../stubs/entities";
-import { DemoConfig } from "./types";
+import type { DemoConfig } from "./types";

-export const demoConfigs: Array<() => Promise<DemoConfig>> = [
+export const demoConfigs: (() => Promise<DemoConfig>)[] = [
  () => import("./sections").then((mod) => mod.demoSections),
  () => import("./arsaboo").then((mod) => mod.demoArsaboo),
  () => import("./teachingbirds").then((mod) => mod.demoTeachingbirds),
@@ -1,5 +1,5 @@
 import { convertEntities } from "../../../../src/fake_data/entity";
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

 export const demoEntitiesJimpower: DemoConfig["entities"] = () =>
  convertEntities({
@@ -1,4 +1,4 @@
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";
 import { demoEntitiesJimpower } from "./entities";
 import { demoLovelaceJimpower } from "./lovelace";
 import { demoThemeJimpower } from "./theme";
@@ -1,5 +1,5 @@
 import "../../custom-cards/card-modder";
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

 export const demoLovelaceJimpower: DemoConfig["lovelace"] = () => ({
  name: "Kingia Castle",
@@ -1,5 +1,5 @@
 import { convertEntities } from "../../../../src/fake_data/entity";
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

 export const demoEntitiesKernehed: DemoConfig["entities"] = () =>
  convertEntities({
@@ -1,4 +1,4 @@
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";
 import { demoEntitiesKernehed } from "./entities";
 import { demoLovelaceKernehed } from "./lovelace";
 import { demoThemeKernehed } from "./theme";
@@ -1,4 +1,4 @@
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

 export const demoLovelaceKernehed: DemoConfig["lovelace"] = () => ({
  name: "Hem",
@@ -1,16 +0,0 @@
-import { html } from "lit";
-import { DemoConfig } from "../types";
-
-export const demoLovelaceDescription: DemoConfig["description"] = (
-  localize
-) => html`
-  <p>
-    ${localize("ui.panel.page-demo.config.sections.description", {
-      blog_post: html`<a
-        href="https://www.home-assistant.io/blog/2024/03/04/dashboard-chapter-1/"
-        target="_blank"
-        >${localize("ui.panel.page-demo.config.sections.description_blog_post")}
-      </a>`,
-    })}
-  </p>
-`;
@@ -1,7 +1,7 @@
 import { convertEntities } from "../../../../src/fake_data/entity";
-import { DemoConfig } from "../types";
+import type { DemoConfig } from "../types";

-export const demoEntitiesSections: DemoConfig["entities"] = () =>
+export const demoEntitiesSections: DemoConfig["entities"] = (localize) =>
  convertEntities({
    "cover.living_room_garden_shutter": {
      entity_id: "cover.living_room_garden_shutter",
@@ -111,13 +111,70 @@ export const demoEntitiesSections: DemoConfig["entities"] = () =>
        friendly_name: "Living room Temperature",
      },
    },
+    "sensor.living_room_humidity": {
+      entity_id: "sensor.living_room_humidity",
+      state: "57",
+      attributes: {
+        state_class: "measurement",
+        unit_of_measurement: "%",
+        device_class: "humidity",
+        friendly_name: "Living room Humidity",
+      },
+    },
+    "sensor.outdoor_temperature": {
+      entity_id: "sensor.outdoor_temperature",
+      state: "10.5",
+      attributes: {
+        state_class: "measurement",
+        unit_of_measurement: "°C",
+        device_class: "temperature",
+        friendly_name: "Outdoor temperature",
+      },
+    },
+    "sensor.outdoor_humidity": {
+      entity_id: "sensor.outdoor_humidity",
+      state: "70.4",
+      attributes: {
+        state_class: "measurement",
+        unit_of_measurement: "%",
+        device_class: "humidity",
+        friendly_name: "Outdoor humidity",
+      },
+    },
+    "device_tracker.car": {
+      entity_id: "sensor.outdoor_humidity",
+      state: "not_home",
+      attributes: {
+        friendly_name: "Car",
+        icon: "mdi:car",
+      },
+    },
    "media_player.living_room_nest_mini": {
      entity_id: "media_player.living_room_nest_mini",
-      state: "off",
+      state: "playing",
      attributes: {
        device_class: "speaker",
-        friendly_name: "Living room Nest Mini",
-        supported_features: 152461,
+        volume_level: 0.18,
+        is_volume_muted: false,
+        media_content_type: "music",
+        media_duration: 300,
+        media_position: 0,
+        media_position_updated_at: new Date(
+          // 23 seconds in
+          new Date().getTime() - 23000
+        ).toISOString(),
+        media_title: "I Wasn't Born To Follow",
+        media_artist: "The Byrds",
+        media_album_name: "The Notorious Byrd Brothers",
+        source_list: ["It's A Party", "Radio HSL", "Retro 70s and 80s"],
+        shuffle: false,
+        night_sound: false,
+        speech_enhance: false,
+        friendly_name: localize(
+          "ui.panel.page-demo.config.sections.entities.media_player.living_room_nest_mini"
+        ),
+        entity_picture: "/assets/sections/images/media_player_family_room.jpg",
+        supported_features: 64063,
      },
    },
    "cover.kitchen_shutter": {
@@ -142,6 +199,14 @@ export const demoEntitiesSections: DemoConfig["entities"] = () =>
        supported_features: 32,
      },
    },
+    "binary_sensor.kitchen_motion": {
+      entity_id: "light.kitchen_motion",
+      state: "on",
+      attributes: {
+        device_class: "motion",
+        friendly_name: "Kitchen motion",
+      },
+    },
    "light.worktop_spotlights": {
      entity_id: "light.worktop_spotlights",
      state: "off",
@@ -168,8 +233,27 @@ export const demoEntitiesSections: DemoConfig["entities"] = () =>
      state: "on",
      attributes: {
        device_class: "speaker",
-        friendly_name: "Kitchen Nest Audio",
-        supported_features: 152461,
+        volume_level: 0.18,
+        is_volume_muted: false,
+        media_content_type: "music",
+        media_duration: 300,
+        media_position: 0,
+        media_position_updated_at: new Date(
+          // 23 seconds in
+          new Date().getTime() - 23000
+        ).toISOString(),
+        media_title: "I Wasn't Born To Follow",
+        media_artist: "The Byrds",
+        media_album_name: "The Notorious Byrd Brothers",
+        source_list: ["It's A Party", "Radio HSL", "Retro 70s and 80s"],
+        shuffle: false,
+        night_sound: false,
+        speech_enhance: false,
+        friendly_name: localize(
+          "ui.panel.page-demo.config.sections.entities.media_player.kitchen_nest_audio"
+        ),
+        entity_picture: "/assets/sections/images/media_player_family_room.jpg",
+        supported_features: 64063,
      },
    },
    "binary_sensor.tesla_wall_connector_vehicle_connected": {
@@ -333,8 +417,36 @@ export const demoEntitiesSections: DemoConfig["entities"] = () =>
      entity_id: "media_player.study_nest_hub",
      state: "off",
      attributes: {
-        friendly_name: "Study Nest Hub",
-        supported_features: 152461,
+        device_class: "speaker",
+        volume_level: 0.18,
+        is_volume_muted: false,
+        media_content_type: "music",
+        media_duration: 300,
+        media_position: 0,
+        media_position_updated_at: new Date(
+          // 23 seconds in
+          new Date().getTime() - 23000
+        ).toISOString(),
+        media_title: "I Wasn't Born To Follow",
+        media_artist: "The Byrds",
+        media_album_name: "The Notorious Byrd Brothers",
+        source_list: ["It's A Party", "Radio HSL", "Retro 70s and 80s"],
+        shuffle: false,
+        night_sound: false,
+        speech_enhance: false,
+        friendly_name: localize(
+          "ui.panel.page-demo.config.sections.entities.media_player.study_nest_hub"
+        ),
+        entity_picture: "/assets/sections/images/media_player_family_room.jpg",
+        supported_features: 64063,
+      },
+    },
+    "switch.in_meeting": {
+      entity_id: "switch.in_meeting",
+      state: "on",
+      attributes: {
+        icon: "mdi:laptop-account",
+        friendly_name: "In a meeting",
      },
    },
    "sensor.standing_desk_height": {
@@ -1,5 +1,4 @@
-import { DemoConfig } from "../types";
-import { demoLovelaceDescription } from "./description";
+import type { DemoConfig } from "../types";
 import { demoEntitiesSections } from "./entities";
 import { demoLovelaceSections } from "./lovelace";

@@ -7,7 +6,6 @@ export const demoSections: DemoConfig = {
  authorName: "Home Assistant",
  authorUrl: "https://github.com/home-assistant/frontend/",
  name: "Home Demo",
-  description: demoLovelaceDescription,
  lovelace: demoLovelaceSections,
  entities: demoEntitiesSections,
  theme: () => ({}),
--- a/Show More
+++ b/Show More