Adjust gap

* Add QR code to long lived access tokens dialog

* Apply suggestions from code review

Co-authored-by: Bram Kragten <mail@bramkragten.nl>

* Further changes from code review

Co-authored-by: Bram Kragten <mail@bramkragten.nl>

.devcontainer/Dockerfile

@@ -0,0 +1,13 @@
+# 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:0-3.9
+
+ENV \
+  DEBIAN_FRONTEND=noninteractive \
+  DEVCONTAINER=true \
+  PATH=$PATH:./node_modules/.bin
+
+# Install nvm
+COPY .nvmrc /tmp/.nvmrc
+RUN \
+  su vscode -c \
+    "source /usr/local/share/nvm/nvm.sh && nvm install $(cat /tmp/.nvmrc) 2>&1"

.devcontainer/devcontainer.json

@@ -0,0 +1,34 @@
+{
+  "name": "Home Assistant Frontend",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": ".."
+  },
+  "appPort": "8124:8123",
+  "context": "..",
+  "postCreateCommand": "script/bootstrap",
+  "extensions": [
+    "github.vscode-pull-request-github",
+    "dbaeumer.vscode-eslint",
+    "ms-vscode.vscode-typescript-tslint-plugin",
+    "esbenp.prettier-vscode",
+    "bierner.lit-html",
+    "runem.lit-plugin",
+    "ms-python.vscode-pylance"
+  ],
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash",
+    "files.eol": "\n",
+    "editor.tabSize": 2,
+    "editor.formatOnPaste": false,
+    "editor.formatOnSave": true,
+    "editor.formatOnType": true,
+    "[typescript]": {
+      "editor.defaultFormatter": "esbenp.prettier-vscode"
+    },
+    "[javascript]": {
+      "editor.defaultFormatter": "esbenp.prettier-vscode"
+    },
+    "files.trimTrailingWhitespace": true
+  }
+}

.eslintrc.json

@@ -4,8 +4,7 @@
     "plugin:@typescript-eslint/recommended",
     "plugin:wc/recommended",
     "plugin:lit/recommended",
-    "prettier",
-    "prettier/@typescript-eslint"
+    "prettier"
   ],
   "parser": "@typescript-eslint/parser",
   "parserOptions": {
@@ -29,9 +28,7 @@
     "__BUILD__": false,
     "__VERSION__": false,
     "__STATIC_PATH__": false,
-    "Polymer": true,
-    "webkitSpeechRecognition": false,
-    "ResizeObserver": false
+    "Polymer": true
   },
   "env": {
     "browser": true,
@@ -75,14 +72,38 @@
     "object-curly-newline": 0,
     "default-case": 0,
     "wc/no-self-class": 0,
+    "no-shadow": 0,
     "@typescript-eslint/camelcase": 0,
-    "@typescript-eslint/ban-ts-ignore": 0,
+    "@typescript-eslint/ban-ts-comment": 0,
     "@typescript-eslint/no-use-before-define": 0,
     "@typescript-eslint/no-non-null-assertion": 0,
     "@typescript-eslint/no-explicit-any": 0,
     "@typescript-eslint/no-unused-vars": 0,
-    "@typescript-eslint/explicit-function-return-type": 0
+    "@typescript-eslint/explicit-function-return-type": 0,
+    "@typescript-eslint/explicit-module-boundary-types": 0,
+    "@typescript-eslint/no-shadow": ["error"],
+    "@typescript-eslint/naming-convention": [
+      0,
+      {
+        "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"]
+      }
+    ],
+    "lit/attribute-value-entities": 0
   },
   "plugins": ["disable", "import", "lit", "prettier", "@typescript-eslint"],
-  "processor": "disable/disable"
+  "processor": "disable/disable",
+  "ignorePatterns": ["src/resources/lit-virtualizer/*"]
 }

.github/ISSUE_TEMPLATE.md

@@ -74,12 +74,12 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w
 
 ```
 
-## Problem-relevant configuration
+## Problem-relevant frontend configuration
 
 <!--
-  An example configuration that caused the problem for you. Fill this out even
-  if it seems unimportant to you. Please be sure to remove personal information
-  like passwords, private URLs and other credentials.
+  An example configuration that caused the problem for you, e.g. the YAML configuration
+  of the used cards. Fill this out even if it seems unimportant to you. Please be sure
+  to remove personal information like passwords, private URLs and other credentials.
 -->
 
 ```yaml
@@ -89,7 +89,7 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w
 ## Javascript errors shown in your browser console/inspector
 
 <!--
-  If you come across any javascript or other error logs, e.g., in your browser
+  If you come across any Javascript or other error logs, e.g. in your browser
   console/inspector please provide them.
 -->
 

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.md

@@ -1,26 +0,0 @@
----
-name: Request a feature for the UI, Frontend or Lovelace
-about: Request an new feature for the Home Assistant frontend.
-labels: feature request
----
-
-<!--
-  DO NOT DELETE ANY TEXT from this template!
-  Otherwise, your request may be closed without comment.
--->
-
-## The request
-
-<!--
-  Describe to our maintainers, the feature you would like to be added.
-  Please be clear and concise and, if possible, provide a screenshot or mockup.
--->
-
-## The alternatives
-
-<!--
-  Are you currently using, or have you considered alternatives?
-  If so, could you please describe those?
--->
-
-## Additional information

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,121 @@
+name: Report a bug with the UI, Frontend or Lovelace
+description: Report an issue related to the Home Assistant frontend.
+labels: bug
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Make sure you are running the [latest version of Home Assistant][releases] before reporting an issue.
+
+        If you have a feature or enhancement request for the frontend, please [start an discussion][fr] instead of creating an issue.
+
+        **Please not not report issues for custom Lovelace cards.**
+
+        [fr]: https://github.com/home-assistant/frontend/discussions
+        [releases]: https://github.com/home-assistant/home-assistant/releases
+  - type: checkboxes
+    attributes:
+      label: Checklist
+      description: Please verify that you've followed these steps
+      options:
+        - label: I have updated to the latest available Home Assistant version.
+          required: true
+        - label: I have cleared the cache of my browser.
+          required: true
+        - label: I have tried a different browser to see if it is related to my browser.
+          required: true
+  - type: markdown
+    attributes:
+      value: |
+        ## The problem
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Describe the issue you are experiencing
+      description: Provide a clear and concise description of what the bug is.
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Describe the behavior you expected
+      description: Describe what you expected to happen or it should look/behave.
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Steps to reproduce the issue
+      description: |
+        Please tell us exactly how to reproduce your issue.
+        Provide clear and concise step by step instructions and add code snippets if needed.
+      value: |
+        1.
+        2.
+        3.
+        ...
+  - type: markdown
+    attributes:
+      value: |
+        ## Environment
+  - type: input
+    validations:
+      required: true
+    attributes:
+      label: What version of Home Assistant Core has the issue?
+      placeholder: core-
+      description: >
+        Can be found in the Configuration panel -> Info.
+  - type: input
+    attributes:
+      label: What was the last working version of Home Assistant Core?
+      placeholder: core-
+      description: >
+        If known, otherwise leave blank.
+  - type: input
+    attributes:
+      label: In which browser are you experiencing the issue with?
+      placeholder: Google Chrome 88.0.4324.150
+      description: >
+        Provide the full name and don't forget to add the version!
+  - type: input
+    attributes:
+      label: Which operating system are you using to run this browser?
+      placeholder: macOS Big Sur (1.11)
+      description: >
+        Don't forget to add the version!
+  - type: markdown
+    attributes:
+      value: |
+        # Details
+
+  - type: textarea
+    attributes:
+      label: State of relevant entities
+      description: >
+        If your issue is about how an entity is shown in the UI, please add the
+        state and attributes for all situations. You can find this information
+        at Developer Tools -> States.
+      render: txt
+  - type: textarea
+    attributes:
+      label: Problem-relevant frontend configuration
+      description: >
+        An example configuration that caused the problem for you, e.g., the YAML
+        configuration of the used cards. Fill this out even if it seems
+        unimportant to you. Please be sure to remove personal information like
+        passwords, private URLs and other credentials.
+      render: yaml
+  - type: textarea
+    attributes:
+      label: Javascript errors shown in your browser console/inspector
+      description: >
+        If you come across any Javascript or other error logs, e.g., in your
+        browser console/inspector please provide them.
+      render: txt
+  - type: textarea
+    attributes:
+      label: Additional information
+      description: >
+        If you have any additional information for us, use the field below.
+        Please note, you can attach screenshots or screen recordings here, by
+        dragging and dropping files in the field below.

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: Request a feature for the UI, Frontend or Lovelace
+    url: https://github.com/home-assistant/frontend/discussions/category_choices
+    about: Request an new feature for the Home Assistant frontend.
   - name: Report a bug that is NOT related to the UI, Frontend or Lovelace
     url: https://github.com/home-assistant/core/issues
     about: This is the issue tracker for our frontend. Please report other issues with the backend repository.

.github/PULL_REQUEST_TEMPLATE.md

@@ -18,8 +18,8 @@
 <!--
   Describe the big picture of your changes here to communicate to the
   maintainers why we should accept this pull request. If it fixes a bug
-  or resolves a feature request, be sure to link to that issue in the
-  additional information section.
+  or resolves a feature request, be sure to link to that issue or discussion
+  in the additional information section.
 -->
 
 ## Type of change
@@ -56,7 +56,7 @@
 -->
 
 - This PR fixes or closes issue: fixes #
-- This PR is related to issue:
+- This PR is related to issue or discussion:
 - Link to documentation pull request:
 
 ## Checklist

.github/lock.yml

@@ -1,27 +0,0 @@
-# Configuration for Lock Threads - https://github.com/dessant/lock-threads
-
-# Number of days of inactivity before a closed issue or pull request is locked
-daysUntilLock: 1
-
-# Skip issues and pull requests created before a given timestamp. Timestamp must
-# follow ISO 8601 (`YYYY-MM-DD`). Set to `false` to disable
-skipCreatedBefore: 2020-01-01
-
-# Issues and pull requests with these labels will be ignored. Set to `[]` to disable
-exemptLabels: []
-
-# Label to add before locking, such as `outdated`. Set to `false` to disable
-lockLabel: false
-
-# Comment to post before locking. Set to `false` to disable
-lockComment: false
-
-# Assign `resolved` as the reason for locking. Set to `false` to disable
-setLockReason: false
-
-# Limit to only `issues` or `pulls`
-only: pulls
-
-# Optionally, specify configuration settings just for `issues` or `pulls`
-issues:
-  daysUntilLock: 30

.github/stale.yml

@@ -1,56 +0,0 @@
-# Configuration for probot-stale - https://github.com/probot/stale
-
-# Number of days of inactivity before an Issue or Pull Request becomes stale
-daysUntilStale: 90
-
-# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
-# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
-daysUntilClose: 7
-
-# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
-onlyLabels: []
-
-# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
-exemptLabels:
-  - feature request
-  - Help wanted
-  - to do
-
-# Set to true to ignore issues in a project (defaults to false)
-exemptProjects: true
-
-# Set to true to ignore issues in a milestone (defaults to false)
-exemptMilestones: true
-
-# Set to true to ignore issues with an assignee (defaults to false)
-exemptAssignees: false
-
-# Label to use when marking as stale
-staleLabel: stale
-
-# Comment to post when marking as stale. Set to `false` to disable
-markComment: >
-  There hasn't been any activity on this issue recently. Due to the high number
-  of incoming GitHub notifications, we have to clean some of the old issues,
-  as many of them have already been resolved with the latest updates.
-
-  Please make sure to update to the latest Home Assistant version and check
-  if that solves the issue. Let us know if that works for you by adding a
-  comment 👍
-
-  This issue now has been marked as stale and will be closed if no further
-  activity occurs. Thank you for your contributions.
-
-# Comment to post when removing the stale label.
-# unmarkComment: >
-#   Your comment here.
-
-# Comment to post when closing a stale Issue or Pull Request.
-# closeComment: >
-#   Your comment here.
-
-# Limit the number of actions per hour, from 1-30. Default is 30
-limitPerRun: 30
-
-# Limit to only `issues` or `pulls`
-only: issues

.github/workflows/ci.yaml

@@ -37,9 +37,11 @@ jobs:
       - name: Build resources
         run: ./node_modules/.bin/gulp gen-icons-json build-translations gather-gallery-demos
       - name: Run eslint
-        run: ./node_modules/.bin/eslint '{**/src,src}/**/*.{js,ts,html}' --ignore-path .gitignore
+        run: yarn run lint:eslint
       - name: Run tsc
-        run: ./node_modules/.bin/tsc
+        run: yarn run lint:types
+      - name: Run prettier
+        run: yarn run lint:prettier
   test:
     runs-on: ubuntu-latest
     steps:

.github/workflows/lock.yml

@@ -0,0 +1,20 @@
+name: Lock
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 * * * *"
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v2.0.1
+        with:
+          github-token: ${{ github.token }}
+          issue-lock-inactive-days: "30"
+          issue-exclude-created-before: "2020-10-01T00:00:00Z"
+          issue-lock-reason: ""
+          pr-lock-inactive-days: "1"
+          pr-exclude-created-before: "2020-11-01T00:00:00Z"
+          pr-lock-reason: ""

.github/workflows/netflify.yml

@@ -0,0 +1,19 @@
+name: Netlify
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  trigger_builds:
+    name: Trigger netlify build preview
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Trigger Cast build
+        run: curl -X POST -d {} https://api.netlify.com/build_hooks/${{ secrets.NETLIFY_CAST_DEV_BUILD_HOOK }}
+
+      - name: Trigger Demo build
+        run: curl -X POST -d {} https://api.netlify.com/build_hooks/${{ secrets.NETLIFY_DEMO_DEV_BUILD_HOOK }}
+
+      - name: Trigger Gallery build
+        run: curl -X POST -d {} https://api.netlify.com/build_hooks/${{ secrets.NETLIFY_GALLERY_DEV_BUILD_HOOK }}

.github/workflows/release.yaml

@@ -0,0 +1,81 @@
+name: Release
+
+on:
+  release:
+    types:
+      - published
+
+env:
+  WHEELS_TAG: 3.8-alpine3.12
+  PYTHON_VERSION: 3.8
+  NODE_VERSION: 12.1
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v2
+
+      - name: Verify version
+        uses: home-assistant/actions/helpers/verify-version@master
+
+      - name: Set up Python ${{ env.PYTHON_VERSION }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Set up Node ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Build and release package
+        run: |
+          python3 -m pip install twine
+          export TWINE_USERNAME="__token__"
+          export TWINE_PASSWORD="${{ secrets.TWINE_TOKEN }}"
+
+          script/release
+
+  wheels-init:
+    name: Init wheels build
+    needs: release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate requirements.txt
+        run: |
+          # Sleep to give pypi time to populate the new version across mirrors
+          sleep 240
+          version=$(echo "${{ github.ref }}" | awk -F"/" '{print $NF}' )
+          echo "home-assistant-frontend==$version" > ./requirements.txt
+
+      - name: Upload requirements.txt
+        uses: actions/upload-artifact@v2
+        with:
+          name: requirements
+          path: ./requirements.txt
+
+  build-wheels:
+    name: Build wheels for ${{ matrix.arch }}
+    needs: wheels-init
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        arch: ["aarch64", "armhf", "armv7", "amd64", "i386"]
+    steps:
+      - name: Download requirements.txt
+        uses: actions/download-artifact@v2
+        with:
+          name: requirements
+
+      - name: Build wheels
+        uses: home-assistant/wheels@master
+        with:
+          tag: ${{ env.WHEELS_TAG }}
+          arch: ${{ matrix.arch }}
+          wheels-host: ${{ secrets.WHEELS_HOST }}
+          wheels-key: ${{ secrets.WHEELS_KEY }}
+          wheels-user: wheels
+          requirements: "requirements.txt"

.github/workflows/stale.yml

@@ -0,0 +1,42 @@
+name: Stale
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 * * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 90 days stale policy
+        uses: actions/stale@v3.0.13
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          days-before-stale: 90
+          days-before-close: 7
+          operations-per-run: 25
+          remove-stale-when-updated: true
+          stale-issue-label: "stale"
+          exempt-issue-labels: "no-stale,Help%20wanted,help-wanted,feature-request,feature%20request"
+          stale-issue-message: >
+            There hasn't been any activity on this issue recently. Due to the
+            high number of incoming GitHub notifications, we have to clean some
+            of the old issues, as many of them have already been resolved with
+            the latest updates.
+
+            Please make sure to update to the latest Home Assistant version and
+            check if that solves the issue. Let us know if that works for you by
+            adding a comment 👍
+
+            This issue has now been marked as stale and will be closed if no
+            further activity occurs. Thank you for your contributions.
+
+          stale-pr-label: "stale"
+          exempt-pr-labels: "no-stale"
+          stale-pr-message: >
+            There hasn't been any activity on this pull request recently. This
+            pull request has been automatically marked as stale because of that
+            and will be closed if no further activity occurs within 7 days.
+
+            Thank you for your contributions.

.github/workflows/translations.yaml

@@ -0,0 +1,65 @@
+name: Translations
+
+on:
+  schedule:
+    - cron: "30 0 * * *"
+  push:
+    branches:
+      - dev
+    paths:
+      - src/translations/en.json
+
+env:
+  NODE_VERSION: 12
+
+jobs:
+  upload:
+    name: Upload
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Upload Translations
+        run: |
+          export LOKALISE_TOKEN="${{ secrets.LOKALISE_TOKEN }}"
+
+          ./script/translations_upload_base
+
+  download:
+    name: Download
+    needs: upload
+    if: github.event_name == 'schedule'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Download Translations
+        run: |
+          export LOKALISE_TOKEN="${{ secrets.LOKALISE_TOKEN }}"
+
+          npm install
+          ./script/translations_download
+
+      - name: Initialize git
+        uses: home-assistant/actions/helpers/git-init@master
+        with:
+          name: GitHub Action
+          email: github-action@users.noreply.github.com
+
+      - name: Update translation
+        run: |
+          git add translations
+          git commit -am "Translation update"
+          git push

.gitignore

@@ -1,10 +1,17 @@
+.DS_Store
+.reify-cache
+
+# build
 build
 build-translations/*
+hass_frontend/*
+dist
+
+# yarn
+.yarn
+yarn-error.log
 node_modules/*
 npm-debug.log
-.DS_Store
-hass_frontend/*
-.reify-cache
 
 # Python stuff
 *.py[cod]
@@ -14,22 +21,23 @@ hass_frontend/*
 # venv stuff
 pyvenv.cfg
 pip-selfcheck.json
-venv
+venv/*
 .venv
-lib
-bin
-dist
 
 # vscode
 .vscode/*
 !.vscode/extensions.json
+!.vscode/launch.json
+!.vscode/tasks.json
 
 # Cast dev settings
 src/cast/dev_const.ts
 
 # Secrets
 .lokalise_token
-yarn-error.log
 
-#asdf
+# asdf
 .tool-versions
+
+# Home Assistant config
+/config

.hound.yml

@@ -1,6 +0,0 @@
-jshint:
-  enabled: false
-
-eslint:
-  enabled: true
-  config_file: .eslintrc-hound.json

.mocharc.cjs

@@ -0,0 +1,4 @@
+module.exports = {
+  require: "test-mocha/testconf.js",
+  timeout: 10000,
+};

.vscode/launch.json

@@ -0,0 +1,44 @@
+{
+  // https://github.com/microsoft/vscode-js-debug/blob/master/OPTIONS.md
+  "configurations": [
+    {
+      "name": "Debug Frontend",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8123/",
+      "webRoot": "${workspaceFolder}/hass_frontend",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Frontend",
+      "outFiles": [
+        "${workspaceFolder}/hass_frontend/frontend_latest/*.js"
+      ]
+    },
+    {
+      "name": "Debug Gallery",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8100/",
+      "webRoot": "${workspaceFolder}/gallery/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Gallery"
+    },
+    {
+      "name": "Debug Demo",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8090/",
+      "webRoot": "${workspaceFolder}/demo/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Demo"
+    },
+    {
+      "name": "Debug Cast",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8080/",
+      "webRoot": "${workspaceFolder}/cast/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Cast"
+    },
+  ]
+}

.vscode/tasks.json

@@ -0,0 +1,208 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Develop Frontend",
+      "type": "gulp",
+      "task": "develop-app",
+      // Sync changes here to other tasks until issue resolved
+      // https://github.com/Microsoft/vscode/issues/61497
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Supervisor panel",
+      "type": "gulp",
+      "task": "develop-hassio",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Gallery",
+      "type": "gulp",
+      "task": "develop-gallery",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Demo",
+      "type": "gulp",
+      "task": "develop-demo",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Cast",
+      "type": "gulp",
+      "task": "develop-cast",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Run HA Core in devcontainer",
+      "type": "shell",
+      "command": "script/core",
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [],
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Run HA Core for Supervisor in devcontainer",
+      "type": "shell",
+      "command": "HASSIO=${input:supervisorHost} HASSIO_TOKEN=${input:supervisorToken} script/core",
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [],
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    }
+  ],
+  "inputs": [
+    {
+      "id": "supervisorHost",
+      "type": "promptString",
+      "description": "The IP of the Supervisor host running the Remote API proxy add-on"
+    },
+    {
+      "id": "supervisorToken",
+      "type": "promptString",
+      "description": "The token for the Remote API proxy add-on"
+    }
+  ]
+}

README.md

@@ -14,7 +14,7 @@ This is the repository for the official [Home Assistant](https://home-assistant.
 - Development: [Instructions](https://developers.home-assistant.io/docs/frontend/development/)
 - Production build: `script/build_frontend`
 - Gallery: `cd gallery && script/develop_gallery`
-- Hass.io: [Instructions](https://developers.home-assistant.io/docs/en/hassio_hass.html)
+- Supervisor: [Instructions](https://developers.home-assistant.io/docs/supervisor/developing)
 
 ## Frontend development
 
@@ -26,4 +26,4 @@ A complete guide can be found at the following [link](https://www.home-assistant
 
 Home Assistant is open-source and Apache 2 licensed. Feel free to browse the repository, learn and reuse parts in your own projects.
 
-We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variation of devices.
+We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variety of devices.

azure-pipelines-netlify.yml

@@ -1,30 +0,0 @@
-# https://dev.azure.com/home-assistant
-
-trigger: none
-pr: none
-schedules:
-  - cron: "0 0 * * *"
-    displayName: "build preview"
-    branches:
-      include:
-      - dev
-    always: true
-variables:
-  - group: netlify
-
-jobs:
-
-- job: 'Netlify_preview'
-  pool:
-    vmImage: 'ubuntu-latest'
-  steps:
-  - script: |
-      # Cast
-      curl -X POST -d {} https://api.netlify.com/build_hooks/${NETLIFY_CAST}
-
-      # Demo
-      curl -X POST -d {} https://api.netlify.com/build_hooks/${NETLIFY_DEMO}
-
-      # Gallery
-      curl -X POST -d {} https://api.netlify.com/build_hooks/${NETLIFY_GALLERY}
-    displayName: 'Trigger netlify build preview'

azure-pipelines-release.yml

@@ -1,59 +0,0 @@
-# https://dev.azure.com/home-assistant
-
-trigger:
-  batch: true
-  tags:
-    include:
-      - "*"
-pr: none
-variables:
-  - name: versionWheels
-    value: '1.10.1-3.7-alpine3.11'
-  - name: versionNode
-    value: '12.1'
-  - group: twine
-resources:
-  repositories:
-    - repository: azure
-      type: github
-      name: 'home-assistant/ci-azure'
-      endpoint: 'home-assistant'
-
-
-stages:
-  - stage: "Validate"
-    jobs:
-    - template: templates/azp-job-version.yaml@azure
-
-  - stage: "Build"
-    jobs:
-      - job: "ReleasePython"
-        pool:
-          vmImage: "ubuntu-latest"
-        steps:
-          - task: UsePythonVersion@0
-            displayName: "Use Python 3.7"
-            inputs:
-              versionSpec: "3.7"
-          - task: NodeTool@0
-            displayName: "Use Node $(versionNode)"
-            inputs:
-              versionSpec: "$(versionNode)"
-          - script: pip install twine wheel
-            displayName: "Install tools"
-          - script: |
-              export TWINE_USERNAME="$(twineUser)"
-              export TWINE_PASSWORD="$(twinePassword)"
-
-              script/release
-            displayName: "Build and release package"
-  - stage: "Wheels"
-    jobs:
-      - template: templates/azp-job-wheels.yaml@azure
-        parameters:
-          builderVersion: '$(versionWheels)'
-          wheelsRequirement: 'requirement.txt'
-          preBuild:
-          - script: |
-              sleep 240
-              echo "home-assistant-frontend==$(Build.SourceBranchName)" > requirement.txt

azure-pipelines-translation.yml

@@ -1,70 +0,0 @@
-# https://dev.azure.com/home-assistant
-
-trigger:
-  batch: true
-  branches:
-    include:
-    - dev
-  paths:
-    include:
-    - translations/en.json
-pr: none
-schedules:
-  - cron: "30 0 * * *"
-    displayName: "frontend translation update"
-    branches:
-      include:
-      - dev
-    always: true
-variables:
-- group: translation
-resources:
-  repositories:
-  - repository: azure
-    type: github
-    name: 'home-assistant/ci-azure'
-    endpoint: 'home-assistant'
-
-
-jobs:
-
-- job: 'Upload'
-  pool:
-    vmImage: 'ubuntu-latest'
-  steps:
-  - task: NodeTool@0
-    displayName: 'Use Node 12.x'
-    inputs:
-      versionSpec: '12.x'
-  - script: |
-      export LOKALISE_TOKEN="$(lokaliseToken)"
-      export AZURE_BRANCH="$(Build.SourceBranchName)"
-
-      ./script/translations_upload_base
-    displayName: 'Upload Translation'
-
-- job: 'Download'
-  dependsOn:
-  - 'Upload'
-  condition: or(eq(variables['Build.Reason'], 'Schedule'), eq(variables['Build.Reason'], 'Manual'))
-  pool:
-    vmImage: 'ubuntu-latest'
-  steps:
-  - task: NodeTool@0
-    displayName: 'Use Node 12.x'
-    inputs:
-      versionSpec: '12.x'
-  - template: templates/azp-step-git-init.yaml@azure
-  - script: |
-      export LOKALISE_TOKEN="$(lokaliseToken)"
-      export AZURE_BRANCH="$(Build.SourceBranchName)"
-
-      npm install
-      ./script/translations_download
-    displayName: 'Download Translation'
-  - script: |
-      git checkout dev
-      git add translation
-      git commit -am "[ci skip] Translation update"
-      git push
-    displayName: 'Update translation'

build-scripts/README.md

@@ -0,0 +1,39 @@
+# Bundling Home Assistant Frontend
+
+The Home Assistant build pipeline contains various steps to prepare a build.
+
+- Generating icon files to be included
+- Generating translation files to be included
+- Converting TypeScript, CSS and JSON files to JavaScript
+- Bundling
+- Minifying the files
+- Generating the HTML entrypoint files
+- Generating the service worker
+- Compressing the files
+
+## Converting files
+
+Currently in Home Assistant we use a bundler to convert TypeScript, CSS and JSON files to JavaScript files that the browser understands.
+
+We currently rely on Webpack but also have experimental Rollup support. Both of these programs bundle the converted files in both production and development.
+
+For development, bundling is optional. We just want to get the right files in the browser.
+
+Responsibilities of the converter during development:
+
+- Convert TypeScript to JavaScript
+- Convert CSS to JavaScript that sets the content as the default export
+- Convert JSON to JavaScript that sets the content as the default export
+- Make sure import, dynamic import and web worker references work
+  - Add extensions where missing
+  - Resolve absolute package imports
+- Filter out specific imports/packages
+- Replace constants with values
+
+In production, the following responsibilities are added:
+
+- Minify HTML
+- Bundle multiple imports so that the browser can fetch less files
+- Generate a second version that is ES5 compatible
+
+Configuration for all these steps are specified in [bundle.js](bundle.js).

build-scripts/bundle.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 const path = require("path");
 const env = require("./env.js");
 const paths = require("./paths.js");
@@ -44,7 +45,7 @@ module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
 });
 
 module.exports.terserOptions = (latestBuild) => ({
-  safari10: true,
+  safari10: !latestBuild,
   ecma: latestBuild ? undefined : 5,
   output: { comments: false },
 });
@@ -52,8 +53,14 @@ module.exports.terserOptions = (latestBuild) => ({
 module.exports.babelOptions = ({ latestBuild }) => ({
   babelrc: false,
   presets: [
-    !latestBuild && [require("@babel/preset-env").default, { modules: false }],
-    require("@babel/preset-typescript").default,
+    !latestBuild && [
+      "@babel/preset-env",
+      {
+        useBuiltIns: "entry",
+        corejs: "3.6",
+      },
+    ],
+    "@babel/preset-typescript",
   ].filter(Boolean),
   plugins: [
     // Part of ES2018. Converts {...a, b: 2} to Object.assign({}, a, {b: 2})
@@ -62,17 +69,13 @@ module.exports.babelOptions = ({ latestBuild }) => ({
       { loose: true, useBuiltIns: true },
     ],
     // Only support the syntax, Webpack will handle it.
-    "@babel/syntax-dynamic-import",
+    "@babel/plugin-syntax-import-meta",
+    "@babel/plugin-syntax-dynamic-import",
     "@babel/plugin-proposal-optional-chaining",
     "@babel/plugin-proposal-nullish-coalescing-operator",
-    [
-      require("@babel/plugin-proposal-decorators").default,
-      { decoratorsBeforeExport: true },
-    ],
-    [
-      require("@babel/plugin-proposal-class-properties").default,
-      { loose: true },
-    ],
+    ["@babel/plugin-proposal-decorators", { decoratorsBeforeExport: true }],
+    ["@babel/plugin-proposal-private-methods", { loose: true }],
+    ["@babel/plugin-proposal-class-properties", { loose: true }],
   ].filter(Boolean),
 });
 
@@ -110,7 +113,7 @@ BundleConfig {
 */
 
 module.exports.config = {
-  app({ isProdBuild, latestBuild, isStatsBuild }) {
+  app({ isProdBuild, latestBuild, isStatsBuild, isWDS }) {
     return {
       entry: {
         service_worker: "./src/entrypoints/service_worker.ts",
@@ -125,6 +128,7 @@ module.exports.config = {
       isProdBuild,
       latestBuild,
       isStatsBuild,
+      isWDS,
     };
   },
 

build-scripts/env.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 const fs = require("fs");
 const path = require("path");
 const paths = require("./paths.js");
@@ -6,6 +7,9 @@ module.exports = {
   useRollup() {
     return process.env.ROLLUP === "1";
   },
+  useWDS() {
+    return process.env.WDS === "1";
+  },
   isProdBuild() {
     return (
       process.env.NODE_ENV === "production" || module.exports.isStatsBuild()

build-scripts/gulp/app.js

@@ -12,6 +12,7 @@ require("./webpack.js");
 require("./service-worker.js");
 require("./entry-html.js");
 require("./rollup.js");
+require("./wds.js");
 
 gulp.task(
   "develop-app",
@@ -28,7 +29,11 @@ gulp.task(
       "build-translations"
     ),
     "copy-static-app",
-    env.useRollup() ? "rollup-watch-app" : "webpack-watch-app"
+    env.useWDS()
+      ? "wds-watch-app"
+      : env.useRollup()
+      ? "rollup-watch-app"
+      : "webpack-watch-app"
   )
 );
 

build-scripts/gulp/entry-html.js

@@ -19,6 +19,7 @@ const renderTemplate = (pth, data = {}, pathFunc = templatePath) => {
   return compiled({
     ...data,
     useRollup: env.useRollup(),
+    useWDS: env.useWDS(),
     renderTemplate,
   });
 };
@@ -90,10 +91,23 @@ gulp.task("gen-pages-prod", (done) => {
 });
 
 gulp.task("gen-index-app-dev", (done) => {
+  let latestAppJS, latestCoreJS, latestCustomPanelJS;
+
+  if (env.useWDS()) {
+    latestAppJS = "http://localhost:8000/src/entrypoints/app.ts";
+    latestCoreJS = "http://localhost:8000/src/entrypoints/core.ts";
+    latestCustomPanelJS =
+      "http://localhost:8000/src/entrypoints/custom-panel.ts";
+  } else {
+    latestAppJS = "/frontend_latest/app.js";
+    latestCoreJS = "/frontend_latest/core.js";
+    latestCustomPanelJS = "/frontend_latest/custom-panel.js";
+  }
+
   const content = renderTemplate("index", {
-    latestAppJS: "/frontend_latest/app.js",
-    latestCoreJS: "/frontend_latest/core.js",
-    latestCustomPanelJS: "/frontend_latest/custom-panel.js",
+    latestAppJS,
+    latestCoreJS,
+    latestCustomPanelJS,
 
     es5AppJS: "/frontend_es5/app.js",
     es5CoreJS: "/frontend_es5/core.js",

build-scripts/gulp/gather-static.js

@@ -85,6 +85,11 @@ gulp.task("copy-translations-app", async () => {
   copyTranslations(staticDir);
 });
 
+gulp.task("copy-translations-supervisor", async () => {
+  const staticDir = paths.hassio_output_static;
+  copyTranslations(staticDir);
+});
+
 gulp.task("copy-static-app", async () => {
   const staticDir = paths.app_output_static;
   // Basic static files

build-scripts/gulp/hassio.js

@@ -10,6 +10,8 @@ require("./gen-icons-json.js");
 require("./webpack.js");
 require("./compress.js");
 require("./rollup.js");
+require("./gather-static.js");
+require("./translations.js");
 
 gulp.task(
   "develop-hassio",
@@ -20,6 +22,8 @@ gulp.task(
     "clean-hassio",
     "gen-icons-json",
     "gen-index-hassio-dev",
+    "build-supervisor-translations",
+    "copy-translations-supervisor",
     env.useRollup() ? "rollup-watch-hassio" : "webpack-watch-hassio"
   )
 );
@@ -32,6 +36,8 @@ gulp.task(
     },
     "clean-hassio",
     "gen-icons-json",
+    "build-supervisor-translations",
+    "copy-translations-supervisor",
     env.useRollup() ? "rollup-prod-hassio" : "webpack-prod-hassio",
     "gen-index-hassio-prod",
     ...// Don't compress running tests

build-scripts/gulp/translations.js

@@ -7,7 +7,6 @@ const gulp = require("gulp");
 const fs = require("fs");
 const foreach = require("gulp-foreach");
 const merge = require("gulp-merge-json");
-const minify = require("gulp-jsonminify");
 const rename = require("gulp-rename");
 const transform = require("gulp-json-transform");
 const { mapFiles } = require("../util");
@@ -34,21 +33,10 @@ String.prototype.rsplit = function (sep, maxsplit) {
     : split;
 };
 
-// Panel translations which should be split from the core translations. These
-// should mirror the fragment definitions in polymer.json, so that we load
-// additional resources at equivalent points.
-const TRANSLATION_FRAGMENTS = [
-  "config",
-  "history",
-  "logbook",
-  "mailbox",
-  "profile",
-  "shopping-list",
-  "page-authorize",
-  "page-demo",
-  "page-onboarding",
-  "developer-tools",
-];
+// Panel translations which should be split from the core translations.
+const TRANSLATION_FRAGMENTS = Object.keys(
+  require("../../src/translations/en.json").ui.panel
+);
 
 function recursiveFlatten(prefix, data) {
   let output = {};
@@ -278,6 +266,7 @@ gulp.task(taskName, function () {
         TRANSLATION_FRAGMENTS.forEach((fragment) => {
           delete data.ui.panel[fragment];
         });
+        delete data.supervisor;
         return data;
       })
     )
@@ -301,7 +290,6 @@ gulp.task("build-flattened-translations", function () {
         return flatten(data);
       })
     )
-    .pipe(minify())
     .pipe(
       rename((filePath) => {
         if (filePath.dirname === "core") {
@@ -355,6 +343,62 @@ gulp.task(
   }
 );
 
+gulp.task("build-translation-fragment-supervisor", function () {
+  return gulp
+    .src(fullDir + "/*.json")
+    .pipe(transform((data) => data.supervisor))
+    .pipe(gulp.dest(workDir + "/supervisor"));
+});
+
+gulp.task("build-translation-flatten-supervisor", function () {
+  return gulp
+    .src(workDir + "/supervisor/*.json")
+    .pipe(
+      transform(function (data) {
+        // Polymer.AppLocalizeBehavior requires flattened json
+        return flatten(data);
+      })
+    )
+    .pipe(gulp.dest(outDir));
+});
+
+gulp.task("build-translation-write-metadata", function writeMetadata() {
+  return gulp
+    .src(
+      [
+        path.join(paths.translations_src, "translationMetadata.json"),
+        workDir + "/testMetadata.json",
+        workDir + "/translationFingerprints.json",
+      ],
+      { allowEmpty: true }
+    )
+    .pipe(merge({}))
+    .pipe(
+      transform(function (data) {
+        const newData = {};
+        Object.entries(data).forEach(([key, value]) => {
+          // Filter out translations without native name.
+          if (value.nativeName) {
+            newData[key] = value;
+          } else {
+            console.warn(
+              `Skipping language ${key}. Native name was not translated.`
+            );
+          }
+        });
+        return newData;
+      })
+    )
+    .pipe(
+      transform((data) => ({
+        fragments: TRANSLATION_FRAGMENTS,
+        translations: data,
+      }))
+    )
+    .pipe(rename("translationMetadata.json"))
+    .pipe(gulp.dest(workDir));
+});
+
 gulp.task(
   "build-translations",
   gulp.series(
@@ -366,42 +410,20 @@ gulp.task(
     gulp.parallel(...splitTasks),
     "build-flattened-translations",
     "build-translation-fingerprints",
-    function writeMetadata() {
-      return gulp
-        .src(
-          [
-            path.join(paths.translations_src, "translationMetadata.json"),
-            workDir + "/testMetadata.json",
-            workDir + "/translationFingerprints.json",
-          ],
-          { allowEmpty: true }
-        )
-        .pipe(merge({}))
-        .pipe(
-          transform(function (data) {
-            const newData = {};
-            Object.entries(data).forEach(([key, value]) => {
-              // Filter out translations without native name.
-              if (data[key].nativeName) {
-                newData[key] = data[key];
-              } else {
-                console.warn(
-                  `Skipping language ${key}. Native name was not translated.`
-                );
-              }
-              if (data[key]) newData[key] = value;
-            });
-            return newData;
-          })
-        )
-        .pipe(
-          transform((data) => ({
-            fragments: TRANSLATION_FRAGMENTS,
-            translations: data,
-          }))
-        )
-        .pipe(rename("translationMetadata.json"))
-        .pipe(gulp.dest(workDir));
-    }
+    "build-translation-write-metadata"
+  )
+);
+
+gulp.task(
+  "build-supervisor-translations",
+  gulp.series(
+    "clean-translations",
+    "ensure-translations-build-dir",
+    "build-master-translation",
+    "build-merged-translations",
+    "build-translation-fragment-supervisor",
+    "build-translation-flatten-supervisor",
+    "build-translation-fingerprints",
+    "build-translation-write-metadata"
   )
 );

build-scripts/gulp/wds.js

@@ -0,0 +1,11 @@
+// Tasks to run Rollup
+const gulp = require("gulp");
+const { startDevServer } = require("@web/dev-server");
+
+gulp.task("wds-watch-app", () => {
+  startDevServer({
+    config: {
+      watch: true,
+    },
+  });
+});

build-scripts/gulp/webpack.js

@@ -18,6 +18,14 @@ const bothBuilds = (createConfigFunc, params) => [
   createConfigFunc({ ...params, latestBuild: false }),
 ];
 
+/**
+ * @param {{
+ *   compiler: import("webpack").Compiler,
+ *   contentBase: string,
+ *   port: number,
+ *   listenHost?: string
+ * }}
+ */
 const runDevServer = ({
   compiler,
   contentBase,
@@ -33,10 +41,13 @@ const runDevServer = ({
       throw err;
     }
     // Server listening
-    log("[webpack-dev-server]", `http://localhost:${port}`);
+    log(
+      "[webpack-dev-server]",
+      `Project is running at http://localhost:${port}`
+    );
   });
 
-const handler = (done) => (err, stats) => {
+const doneHandler = (done) => (err, stats) => {
   if (err) {
     log.error(err.stack || err);
     if (err.details) {
@@ -45,22 +56,31 @@ const handler = (done) => (err, stats) => {
     return;
   }
 
-  log(`Build done @ ${new Date().toLocaleTimeString()}`);
-
   if (stats.hasErrors() || stats.hasWarnings()) {
-    log.warn(stats.toString("minimal"));
+    console.log(stats.toString("minimal"));
   }
 
+  log(`Build done @ ${new Date().toLocaleTimeString()}`);
+
   if (done) {
     done();
   }
 };
 
+const prodBuild = (conf) =>
+  new Promise((resolve) => {
+    webpack(
+      conf,
+      // Resolve promise when done. Because we pass a callback, webpack closes itself
+      doneHandler(resolve)
+    );
+  });
+
 gulp.task("webpack-watch-app", () => {
-  // we are not calling done, so this command will run forever
+  // This command will run forever because we don't close compiler
   webpack(createAppConfig({ isProdBuild: false, latestBuild: true })).watch(
     { ignored: /build-translations/ },
-    handler()
+    doneHandler()
   );
   gulp.watch(
     path.join(paths.translations_src, "en.json"),
@@ -68,15 +88,12 @@ gulp.task("webpack-watch-app", () => {
   );
 });
 
-gulp.task(
-  "webpack-prod-app",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createAppConfig, { isProdBuild: true }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-app", () =>
+  prodBuild(
+    bothBuilds(createAppConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-dev-server-demo", () => {
@@ -87,17 +104,12 @@ gulp.task("webpack-dev-server-demo", () => {
   });
 });
 
-gulp.task(
-  "webpack-prod-demo",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createDemoConfig, {
-          isProdBuild: true,
-        }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-demo", () =>
+  prodBuild(
+    bothBuilds(createDemoConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-dev-server-cast", () => {
@@ -110,41 +122,35 @@ gulp.task("webpack-dev-server-cast", () => {
   });
 });
 
-gulp.task(
-  "webpack-prod-cast",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createCastConfig, {
-          isProdBuild: true,
-        }),
-
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-cast", () =>
+  prodBuild(
+    bothBuilds(createCastConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-watch-hassio", () => {
-  // we are not calling done, so this command will run forever
+  // This command will run forever because we don't close compiler
   webpack(
     createHassioConfig({
       isProdBuild: false,
       latestBuild: true,
     })
-  ).watch({}, handler());
+  ).watch({ ignored: /build-translations/ }, doneHandler());
+
+  gulp.watch(
+    path.join(paths.translations_src, "en.json"),
+    gulp.series("build-supervisor-translations", "copy-translations-supervisor")
+  );
 });
 
-gulp.task(
-  "webpack-prod-hassio",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createHassioConfig, {
-          isProdBuild: true,
-        }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-hassio", () =>
+  prodBuild(
+    bothBuilds(createHassioConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-dev-server-gallery", () => {
@@ -156,17 +162,11 @@ gulp.task("webpack-dev-server-gallery", () => {
   });
 });
 
-gulp.task(
-  "webpack-prod-gallery",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        createGalleryConfig({
-          isProdBuild: true,
-          latestBuild: true,
-        }),
-
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-gallery", () =>
+  prodBuild(
+    createGalleryConfig({
+      isProdBuild: true,
+      latestBuild: true,
+    })
+  )
 );

build-scripts/paths.js

@@ -1,4 +1,5 @@
-var path = require("path");
+/* eslint-disable @typescript-eslint/no-var-requires */
+const path = require("path");
 
 module.exports = {
   polymer_dir: path.resolve(__dirname, ".."),
@@ -34,6 +35,7 @@ module.exports = {
 
   hassio_dir: path.resolve(__dirname, "../hassio"),
   hassio_output_root: path.resolve(__dirname, "../hassio/build"),
+  hassio_output_static: path.resolve(__dirname, "../hassio/build/static"),
   hassio_output_latest: path.resolve(
     __dirname,
     "../hassio/build/frontend_latest"

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

@@ -1,5 +1,3 @@
-const path = require("path");
-
 module.exports = function (userOptions = {}) {
   // Files need to be absolute paths.
   // This only works if the file has no exports

build-scripts/rollup.js

@@ -1,9 +1,10 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 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 babel = require("@rollup/plugin-babel").babel;
 const replace = require("@rollup/plugin-replace");
 const visualizer = require("rollup-plugin-visualizer");
 const { string } = require("rollup-plugin-string");
@@ -31,116 +32,104 @@ const createRollupConfig = ({
   isStatsBuild,
   publicPath,
   dontHash,
-}) => {
-  return {
-    /**
-     * @type { import("rollup").InputOptions }
-     */
-    inputOptions: {
-      input: entry,
-      // Some entry points contain no JavaScript. This setting silences a warning about that.
-      // https://rollupjs.org/guide/en/#preserveentrysignatures
-      preserveEntrySignatures: false,
-      plugins: [
-        ignore({
-          files: bundle.emptyPackages({ latestBuild }),
-        }),
-        resolve({
-          extensions,
-          preferBuiltins: false,
-          browser: true,
-          rootDir: paths.polymer_dir,
-        }),
-        commonjs({
-          namedExports: {
-            "js-yaml": ["safeDump", "safeLoad"],
-          },
-        }),
-        json(),
-        babel({
-          ...bundle.babelOptions({ latestBuild }),
-          extensions,
-          exclude: bundle.babelExclude(),
-        }),
-        string({
-          // Import certain extensions as strings
-          include: [path.join(paths.polymer_dir, "node_modules/**/*.css")],
-        }),
-        replace(
-          bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
-        ),
+  isWDS,
+}) => ({
+  /**
+   * @type { import("rollup").InputOptions }
+   */
+  inputOptions: {
+    input: entry,
+    // Some entry points contain no JavaScript. This setting silences a warning about that.
+    // https://rollupjs.org/guide/en/#preserveentrysignatures
+    preserveEntrySignatures: false,
+    plugins: [
+      ignore({
+        files: bundle.emptyPackages({ latestBuild }),
+      }),
+      resolve({
+        extensions,
+        preferBuiltins: false,
+        browser: true,
+        rootDir: paths.polymer_dir,
+      }),
+      commonjs(),
+      json(),
+      babel({
+        ...bundle.babelOptions({ latestBuild }),
+        extensions,
+        exclude: bundle.babelExclude(),
+        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,
         }),
-        worker(),
-        dontHashPlugin({ dontHash }),
-        isProdBuild && terser(bundle.terserOptions(latestBuild)),
+      !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,
-          }),
-      ],
-    },
-    /**
-     * @type { import("rollup").OutputOptions }
-     */
-    outputOptions: {
-      // https://rollupjs.org/guide/en/#outputdir
-      dir: outputPath,
-      // https://rollupjs.org/guide/en/#outputformat
-      format: latestBuild ? "es" : "systemjs",
-      // https://rollupjs.org/guide/en/#outputexternallivebindings
-      externalLiveBindings: false,
-      // https://rollupjs.org/guide/en/#outputentryfilenames
-      // https://rollupjs.org/guide/en/#outputchunkfilenames
-      // https://rollupjs.org/guide/en/#outputassetfilenames
-      entryFileNames:
-        isProdBuild && !isStatsBuild ? "[name]-[hash].js" : "[name].js",
-      chunkFileNames:
-        isProdBuild && !isStatsBuild ? "c.[hash].js" : "[name].js",
-      assetFileNames:
-        isProdBuild && !isStatsBuild ? "a.[hash].js" : "[name].js",
-      // https://rollupjs.org/guide/en/#outputsourcemap
-      sourcemap: isProdBuild ? true : "inline",
-    },
-  };
-};
+        visualizer({
+          // https://github.com/btd/rollup-plugin-visualizer#options
+          open: true,
+          sourcemap: true,
+        }),
+    ].filter(Boolean),
+  },
+  /**
+   * @type { import("rollup").OutputOptions }
+   */
+  outputOptions: {
+    // https://rollupjs.org/guide/en/#outputdir
+    dir: outputPath,
+    // https://rollupjs.org/guide/en/#outputformat
+    format: latestBuild ? "es" : "systemjs",
+    // https://rollupjs.org/guide/en/#outputexternallivebindings
+    externalLiveBindings: false,
+    // https://rollupjs.org/guide/en/#outputentryfilenames
+    // https://rollupjs.org/guide/en/#outputchunkfilenames
+    // https://rollupjs.org/guide/en/#outputassetfilenames
+    entryFileNames:
+      isProdBuild && !isStatsBuild ? "[name]-[hash].js" : "[name].js",
+    chunkFileNames: isProdBuild && !isStatsBuild ? "c.[hash].js" : "[name].js",
+    assetFileNames: isProdBuild && !isStatsBuild ? "a.[hash].js" : "[name].js",
+    // https://rollupjs.org/guide/en/#outputsourcemap
+    sourcemap: isProdBuild ? true : "inline",
+  },
+});
 
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createRollupConfig(
+const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild, isWDS }) =>
+  createRollupConfig(
     bundle.config.app({
       isProdBuild,
       latestBuild,
       isStatsBuild,
+      isWDS,
     })
   );
-};
 
-const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createRollupConfig(
+const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
+  createRollupConfig(
     bundle.config.demo({
       isProdBuild,
       latestBuild,
       isStatsBuild,
     })
   );
-};
 
-const createCastConfig = ({ isProdBuild, latestBuild }) => {
-  return createRollupConfig(bundle.config.cast({ isProdBuild, latestBuild }));
-};
+const createCastConfig = ({ isProdBuild, latestBuild }) =>
+  createRollupConfig(bundle.config.cast({ isProdBuild, latestBuild }));
 
-const createHassioConfig = ({ isProdBuild, latestBuild }) => {
-  return createRollupConfig(bundle.config.hassio({ isProdBuild, latestBuild }));
-};
+const createHassioConfig = ({ isProdBuild, latestBuild }) =>
+  createRollupConfig(bundle.config.hassio({ isProdBuild, latestBuild }));
 
-const createGalleryConfig = ({ isProdBuild, latestBuild }) => {
-  return createRollupConfig(
-    bundle.config.gallery({ isProdBuild, latestBuild })
-  );
-};
+const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
+  createRollupConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
 
 module.exports = {
   createAppConfig,

build-scripts/util.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 const path = require("path");
 const fs = require("fs");
 

build-scripts/webpack.js

@@ -1,10 +1,25 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 const webpack = require("webpack");
 const path = require("path");
 const TerserPlugin = require("terser-webpack-plugin");
-const ManifestPlugin = require("webpack-manifest-plugin");
-const WorkerPlugin = require("worker-plugin");
+const { WebpackManifestPlugin } = require("webpack-manifest-plugin");
 const paths = require("./paths.js");
-const bundle = require("./bundle");
+const bundle = require("./bundle.js");
+const log = require("fancy-log");
+
+class LogStartCompilePlugin {
+  ignoredFirst = false;
+
+  apply(compiler) {
+    compiler.hooks.beforeCompile.tap("LogStartCompilePlugin", () => {
+      if (!this.ignoredFirst) {
+        this.ignoredFirst = true;
+        return;
+      }
+      log("Changes detected. Starting compilation");
+    });
+  }
+}
 
 const createWebpackConfig = ({
   entry,
@@ -22,6 +37,7 @@ const createWebpackConfig = ({
   const ignorePackages = bundle.ignorePackages({ latestBuild });
   return {
     mode: isProdBuild ? "production" : "development",
+    target: ["web", latestBuild ? "es2017" : "es5"],
     devtool: isProdBuild
       ? "cheap-module-source-map"
       : "eval-cheap-module-source-map",
@@ -30,7 +46,7 @@ const createWebpackConfig = ({
     module: {
       rules: [
         {
-          test: /\.js$|\.ts$/,
+          test: /\.m?js$|\.ts$/,
           exclude: bundle.babelExclude(),
           use: {
             loader: "babel-loader",
@@ -46,17 +62,14 @@ const createWebpackConfig = ({
     optimization: {
       minimizer: [
         new TerserPlugin({
-          cache: true,
           parallel: true,
           extractComments: true,
-          sourceMap: true,
           terserOptions: bundle.terserOptions(latestBuild),
         }),
       ],
     },
     plugins: [
-      new WorkerPlugin(),
-      new ManifestPlugin({
+      new WebpackManifestPlugin({
         // Only include the JS of entrypoints
         filter: (file) => file.isInitial && !file.name.endsWith(".map"),
       }),
@@ -82,6 +95,7 @@ const createWebpackConfig = ({
               ? path.resolve(context, resource)
               : require.resolve(resource);
           } catch (err) {
+            // eslint-disable-next-line no-console
             console.error(
               "Error in Home Assistant ignore plugin",
               resource,
@@ -99,9 +113,25 @@ const createWebpackConfig = ({
         new RegExp(bundle.emptyPackages({ latestBuild }).join("|")),
         path.resolve(paths.polymer_dir, "src/util/empty.js")
       ),
-    ],
+      // We need to change the import of the polyfill for EventTarget, so we replace the polyfill file with our customized one
+      new webpack.NormalModuleReplacementPlugin(
+        new RegExp(
+          path.resolve(
+            paths.polymer_dir,
+            "src/resources/lit-virtualizer/lib/uni-virtualizer/lib/polyfillLoaders/EventTarget.js"
+          )
+        ),
+        path.resolve(paths.polymer_dir, "src/resources/EventTarget-ponyfill.js")
+      ),
+      !isProdBuild && new LogStartCompilePlugin(),
+    ].filter(Boolean),
     resolve: {
       extensions: [".ts", ".js", ".json"],
+      alias: {
+        "lit/decorators$": "lit/decorators.js",
+        "lit/directive$": "lit/directive.js",
+        "lit/polyfill-support$": "lit/polyfill-support.js",
+      },
     },
     output: {
       filename: ({ chunk }) => {
@@ -122,33 +152,24 @@ const createWebpackConfig = ({
   };
 };
 
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createWebpackConfig(
+const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
+  createWebpackConfig(
     bundle.config.app({ isProdBuild, latestBuild, isStatsBuild })
   );
-};
 
-const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
-  return createWebpackConfig(
+const createDemoConfig = ({ isProdBuild, latestBuild, isStatsBuild }) =>
+  createWebpackConfig(
     bundle.config.demo({ isProdBuild, latestBuild, isStatsBuild })
   );
-};
 
-const createCastConfig = ({ isProdBuild, latestBuild }) => {
-  return createWebpackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
-};
+const createCastConfig = ({ isProdBuild, latestBuild }) =>
+  createWebpackConfig(bundle.config.cast({ isProdBuild, latestBuild }));
 
-const createHassioConfig = ({ isProdBuild, latestBuild }) => {
-  return createWebpackConfig(
-    bundle.config.hassio({ isProdBuild, latestBuild })
-  );
-};
+const createHassioConfig = ({ isProdBuild, latestBuild }) =>
+  createWebpackConfig(bundle.config.hassio({ isProdBuild, latestBuild }));
 
-const createGalleryConfig = ({ isProdBuild, latestBuild }) => {
-  return createWebpackConfig(
-    bundle.config.gallery({ isProdBuild, latestBuild })
-  );
-};
+const createGalleryConfig = ({ isProdBuild, latestBuild }) =>
+  createWebpackConfig(bundle.config.gallery({ isProdBuild, latestBuild }));
 
 module.exports = {
   createAppConfig,

cast/src/html/launcher-faq.html.template

@@ -212,13 +212,8 @@
           Chromecast is a technology developed by Google, and is available on:
         </p>
         <ul>
-          <li>Google Chrome (all platforms except on iOS)</li>
-          <li>
-            Microsoft Edge (all platforms,
-            <a href="https://www.microsoftedgeinsider.com" target="_blank"
-              >dev and canary builds only</a
-            >)
-          </li>
+          <li>Google Chrome (all platforms except iOS)</li>
+          <li>Microsoft Edge (all platforms)</li>
         </ul>
       </div>
 

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

@@ -1,16 +1,9 @@
+import "@material/mwc-button/mwc-button";
 import "@polymer/paper-item/paper-icon-item";
 import "@polymer/paper-listbox/paper-listbox";
 import { Auth, Connection } from "home-assistant-js-websocket";
-import {
-  css,
-  CSSResult,
-  customElement,
-  html,
-  LitElement,
-  property,
-  internalProperty,
-  TemplateResult,
-} from "lit-element";
+import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import { customElement, property, state } from "lit/decorators";
 import { CastManager } from "../../../../src/cast/cast_manager";
 import {
   castSendShowLovelaceView,
@@ -32,7 +25,6 @@ import {
 import "../../../../src/layouts/hass-loading-screen";
 import { generateDefaultViewConfig } from "../../../../src/panels/lovelace/common/generate-lovelace-config";
 import "./hc-layout";
-import "@material/mwc-button/mwc-button";
 
 @customElement("hc-cast")
 class HcCast extends LitElement {
@@ -42,21 +34,19 @@ class HcCast extends LitElement {
 
   @property() public castManager!: CastManager;
 
-  @internalProperty() private askWrite = false;
+  @state() private askWrite = false;
 
-  @internalProperty() private lovelaceConfig?: LovelaceConfig | null;
+  @state() private lovelaceConfig?: LovelaceConfig | null;
 
   protected render(): TemplateResult {
     if (this.lovelaceConfig === undefined) {
-      return html` <hass-loading-screen no-toolbar></hass-loading-screen>> `;
+      return html`<hass-loading-screen no-toolbar></hass-loading-screen>`;
     }
 
     const error =
       this.castManager.castState === "NO_DEVICES_AVAILABLE"
         ? html`
-            <p>
-              There were no suitable Chromecast devices to cast to found.
-            </p>
+            <p>There were no suitable Chromecast devices to cast to found.</p>
           `
         : undefined;
 
@@ -206,7 +196,7 @@ class HcCast extends LitElement {
     }
   }
 
-  static get styles(): CSSResult {
+  static get styles(): CSSResultGroup {
     return css`
       .center-item {
         display: flex;

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

@@ -11,15 +11,8 @@ import {
   getAuth,
   getAuthOptions,
 } from "home-assistant-js-websocket";
-import {
-  css,
-  CSSResult,
-  customElement,
-  html,
-  LitElement,
-  TemplateResult,
-  internalProperty,
-} from "lit-element";
+import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import { customElement, state } from "lit/decorators";
 import { CastManager, getCastManager } from "../../../../src/cast/cast_manager";
 import { castSendShowDemo } from "../../../../src/cast/receiver_messages";
 import {
@@ -60,19 +53,19 @@ const INTRO = html`
 
 @customElement("hc-connect")
 export class HcConnect extends LitElement {
-  @internalProperty() private loading = false;
+  @state() private loading = false;
 
   // If we had stored credentials but we cannot connect,
   // show a screen asking retry or logout.
-  @internalProperty() private cannotConnect = false;
+  @state() private cannotConnect = false;
 
-  @internalProperty() private error?: string | TemplateResult;
+  @state() private error?: string | TemplateResult;
 
-  @internalProperty() private auth?: Auth;
+  @state() private auth?: Auth;
 
-  @internalProperty() private connection?: Connection;
+  @state() private connection?: Connection;
 
-  @internalProperty() private castManager?: CastManager | null;
+  @state() private castManager?: CastManager | null;
 
   private openDemo = false;
 
@@ -86,9 +79,7 @@ export class HcConnect extends LitElement {
           </div>
           <div class="card-actions">
             <a href="/">
-              <mwc-button>
-                Retry
-              </mwc-button>
+              <mwc-button> Retry </mwc-button>
             </a>
             <div class="spacer"></div>
             <mwc-button @click=${this._handleLogout}>Log out</mwc-button>
@@ -299,7 +290,7 @@ export class HcConnect extends LitElement {
     }
   }
 
-  static get styles(): CSSResult {
+  static get styles(): CSSResultGroup {
     return css`
       .card-content a {
         color: var(--primary-color);

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

@@ -4,15 +4,8 @@ import {
   getUser,
   HassUser,
 } from "home-assistant-js-websocket";
-import {
-  css,
-  CSSResult,
-  customElement,
-  html,
-  LitElement,
-  property,
-  TemplateResult,
-} from "lit-element";
+import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import { customElement, property } from "lit/decorators";
 import "../../../../src/components/ha-card";
 
 @customElement("hc-layout")
@@ -30,7 +23,7 @@ class HcLayout extends LitElement {
       <ha-card>
         <div class="layout">
           <img class="hero" src="/images/google-nest-hub.png" />
-          <div class="card-header">
+          <h1 class="card-header">
             Home Assistant Cast${this.subtitle ? ` – ${this.subtitle}` : ""}
             ${this.auth
               ? html`
@@ -44,7 +37,7 @@ class HcLayout extends LitElement {
                   </div>
                 `
               : ""}
-          </div>
+          </h1>
           <slot></slot>
         </div>
       </ha-card>
@@ -69,7 +62,7 @@ class HcLayout extends LitElement {
     }
   }
 
-  static get styles(): CSSResult {
+  static get styles(): CSSResultGroup {
     return css`
       :host {
         display: flex;
@@ -98,8 +91,12 @@ class HcLayout extends LitElement {
         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);

cast/src/receiver/entrypoint.ts

@@ -6,13 +6,60 @@ import { castContext } from "./cast_context";
 import { HcMain } from "./layout/hc-main";
 import { ReceivedMessage } from "./types";
 
-const controller = new HcMain();
-document.body.append(controller);
+const lovelaceController = new HcMain();
+document.body.append(lovelaceController);
+
+const mediaPlayer = document.createElement("cast-media-player");
+mediaPlayer.style.display = "none";
+document.body.append(mediaPlayer);
+const playerStylesAdded = false;
+
+let controls: HTMLElement | null;
+
+const setTouchControlsVisibility = (visible: boolean) => {
+  if (!castContext.getDeviceCapabilities().touch_input_supported) {
+    return;
+  }
+  controls =
+    controls ||
+    (document.body.querySelector("touch-controls") as HTMLElement | null);
+  if (controls) {
+    controls.style.display = visible ? "initial" : "none";
+  }
+};
+
+const showLovelaceController = () => {
+  mediaPlayer.style.display = "none";
+  lovelaceController.style.display = "initial";
+  document.body.setAttribute("style", "overflow-y: auto !important");
+  setTouchControlsVisibility(false);
+};
+
+const showMediaPlayer = () => {
+  lovelaceController.style.display = "none";
+  mediaPlayer.style.display = "initial";
+  document.body.removeAttribute("style");
+  setTouchControlsVisibility(true);
+  if (!playerStylesAdded) {
+    const style = document.createElement("style");
+    style.innerHTML = `
+    body {
+      --logo-image: url('https://www.home-assistant.io/images/home-assistant-logo.svg');
+      --logo-repeat: no-repeat;
+      --playback-logo-image: url('https://www.home-assistant.io/images/home-assistant-logo.svg');
+      --theme-hue: 200;
+      --progress-color: #03a9f4;
+      --splash-image: url('https://home-assistant.io/images/cast/splash.png');
+      --splash-size: cover;
+    }
+    `;
+    document.head.appendChild(style);
+  }
+};
 
 const options = new cast.framework.CastReceiverOptions();
 options.disableIdleTimeout = true;
 options.customNamespaces = {
-  // @ts-ignore
   [CAST_NS]: cast.framework.system.MessageType.JSON,
 };
 
@@ -30,13 +77,61 @@ options.uiConfig = new cast.framework.ui.UiConfig();
 // @ts-ignore
 options.uiConfig.touchScreenOptimizedApp = true;
 
+castContext.setInactivityTimeout(86400); // 1 day
+
 castContext.addCustomMessageListener(
   CAST_NS,
   // @ts-ignore
   (ev: ReceivedMessage<HassMessage>) => {
+    // We received a show Lovelace command, stop media from playing, hide media player and show Lovelace controller
+    if (
+      playerManager.getPlayerState() !==
+      cast.framework.messages.PlayerState.IDLE
+    ) {
+      playerManager.stop();
+    } else {
+      showLovelaceController();
+    }
     const msg = ev.data;
     msg.senderId = ev.senderId;
-    controller.processIncomingMessage(msg);
+    lovelaceController.processIncomingMessage(msg);
+  }
+);
+
+const playerManager = castContext.getPlayerManager();
+
+playerManager.setMessageInterceptor(
+  cast.framework.messages.MessageType.LOAD,
+  (loadRequestData) => {
+    // We received a play media command, hide Lovelace and show media player
+    showMediaPlayer();
+    const media = loadRequestData.media;
+    // Special handling if it came from Google Assistant
+    if (media.entity) {
+      media.contentId = media.entity;
+      media.streamType = cast.framework.messages.StreamType.LIVE;
+      media.contentType = "application/vnd.apple.mpegurl";
+      // @ts-ignore
+      media.hlsVideoSegmentFormat =
+        cast.framework.messages.HlsVideoSegmentFormat.FMP4;
+    }
+    return loadRequestData;
+  }
+);
+
+playerManager.addEventListener(
+  cast.framework.events.EventType.MEDIA_STATUS,
+  (event) => {
+    if (
+      event.mediaStatus?.playerState ===
+        cast.framework.messages.PlayerState.IDLE &&
+      event.mediaStatus?.idleReason &&
+      event.mediaStatus?.idleReason !==
+        cast.framework.messages.IdleReason.INTERRUPTED
+    ) {
+      // media finished or stopped, return to default Lovelace
+      showLovelaceController();
+    }
   }
 );
 

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

@@ -1,10 +1,5 @@
-import {
-  customElement,
-  html,
-  property,
-  internalProperty,
-  TemplateResult,
-} from "lit-element";
+import { html, TemplateResult } from "lit";
+import { customElement, property, state } from "lit/decorators";
 import { mockHistory } from "../../../../demo/src/stubs/history";
 import { LovelaceConfig } from "../../../../src/data/lovelace";
 import {
@@ -21,7 +16,7 @@ import "./hc-lovelace";
 class HcDemo extends HassElement {
   @property({ attribute: false }) public lovelacePath!: string;
 
-  @internalProperty() private _lovelaceConfig?: LovelaceConfig;
+  @state() private _lovelaceConfig?: LovelaceConfig;
 
   protected render(): TemplateResult {
     if (!this._lovelaceConfig) {
@@ -38,10 +33,10 @@ class HcDemo extends HassElement {
 
   protected firstUpdated(changedProps) {
     super.firstUpdated(changedProps);
-    this._initialize();
+    this._initializeHass();
   }
 
-  private async _initialize() {
+  private async _initializeHass() {
     const initial: Partial<MockHomeAssistant> = {
       // Override updateHass so that the correct hass lifecycle methods are called
       updateHass: (hassUpdate: Partial<HomeAssistant>) =>

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

@@ -1,12 +1,5 @@
-import {
-  css,
-  CSSResult,
-  customElement,
-  html,
-  LitElement,
-  property,
-  TemplateResult,
-} from "lit-element";
+import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import { customElement, property } from "lit/decorators";
 import { HomeAssistant } from "../../../../src/types";
 
 @customElement("hc-launch-screen")
@@ -29,7 +22,7 @@ class HcLaunchScreen extends LitElement {
     `;
   }
 
-  static get styles(): CSSResult {
+  static get styles(): CSSResultGroup {
     return css`
       :host {
         display: block;

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

@@ -1,15 +1,7 @@
-import {
-  css,
-  CSSResult,
-  customElement,
-  html,
-  LitElement,
-  property,
-  TemplateResult,
-} from "lit-element";
+import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import { customElement, property } from "lit/decorators";
 import { LovelaceConfig } from "../../../../src/data/lovelace";
 import { Lovelace } from "../../../../src/panels/lovelace/types";
-import "../../../../src/panels/lovelace/views/hui-panel-view";
 import "../../../../src/panels/lovelace/views/hui-view";
 import { HomeAssistant } from "../../../../src/types";
 import "./hc-launch-screen";
@@ -36,31 +28,23 @@ class HcLovelace extends LitElement {
     }
     const lovelace: Lovelace = {
       config: this.lovelaceConfig,
+      rawConfig: this.lovelaceConfig,
       editMode: false,
       urlPath: this.urlPath!,
       enableFullEditMode: () => undefined,
       mode: "storage",
-      language: "en",
+      locale: this.hass.locale,
       saveConfig: async () => undefined,
       deleteConfig: async () => undefined,
       setEditMode: () => undefined,
     };
-    return this.lovelaceConfig.views[index].panel
-      ? html`
-          <hui-panel-view
-            .hass=${this.hass}
-            .lovelace=${lovelace}
-            .config=${this.lovelaceConfig.views[index]}
-          ></hui-panel-view>
-        `
-      : html`
-          <hui-view
-            .hass=${this.hass}
-            .lovelace=${lovelace}
-            .index=${index}
-            columns="2"
-          ></hui-view>
-        `;
+    return html`
+      <hui-view
+        .hass=${this.hass}
+        .lovelace=${lovelace}
+        .index=${index}
+      ></hui-view>
+    `;
   }
 
   protected updated(changedProps) {
@@ -76,7 +60,7 @@ class HcLovelace extends LitElement {
 
         if (configBackground) {
           (this.shadowRoot!.querySelector(
-            "hui-view, hui-panel-view"
+            "hui-view"
           ) as HTMLElement)!.style.setProperty(
             "--lovelace-background",
             configBackground
@@ -100,10 +84,11 @@ class HcLovelace extends LitElement {
     return undefined;
   }
 
-  static get styles(): CSSResult {
+  static get styles(): CSSResultGroup {
     return css`
       :host {
         min-height: 100vh;
+        height: 0;
         display: flex;
         flex-direction: column;
         box-sizing: border-box;

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

@@ -3,12 +3,8 @@ import {
   getAuth,
   UnsubscribeFunc,
 } from "home-assistant-js-websocket";
-import {
-  customElement,
-  html,
-  internalProperty,
-  TemplateResult,
-} from "lit-element";
+import { html, TemplateResult } from "lit";
+import { customElement, state } from "lit/decorators";
 import { CAST_NS } from "../../../../src/cast/const";
 import {
   ConnectMessage,
@@ -36,13 +32,13 @@ let resourcesLoaded = false;
 
 @customElement("hc-main")
 export class HcMain extends HassElement {
-  @internalProperty() private _showDemo = false;
+  @state() private _showDemo = false;
 
-  @internalProperty() private _lovelaceConfig?: LovelaceConfig;
+  @state() private _lovelaceConfig?: LovelaceConfig;
 
-  @internalProperty() private _lovelacePath: string | number | null = null;
+  @state() private _lovelacePath: string | number | null = null;
 
-  @internalProperty() private _error?: string;
+  @state() private _error?: string;
 
   private _unsubLovelace?: UnsubscribeFunc;
 
@@ -216,18 +212,22 @@ export class HcMain extends HassElement {
     }
     this._showDemo = false;
     this._lovelacePath = msg.viewPath;
-    if (castContext.getDeviceCapabilities().touch_input_supported) {
-      this._breakFree();
-    }
+
     this._sendStatus();
   }
 
   private async _generateLovelaceConfig() {
-    const { generateLovelaceConfigFromHass } = await import(
-      "../../../../src/panels/lovelace/common/generate-lovelace-config"
+    const { generateLovelaceDashboardStrategy } = await import(
+      "../../../../src/panels/lovelace/strategies/get-strategy"
     );
     this._handleNewLovelaceConfig(
-      await generateLovelaceConfigFromHass(this.hass!)
+      await generateLovelaceDashboardStrategy(
+        {
+          hass: this.hass!,
+          narrow: false,
+        },
+        "original-states"
+      )
     );
   }
 
@@ -241,9 +241,6 @@ export class HcMain extends HassElement {
       this._showDemo = true;
       this._lovelacePath = "overview";
       this._sendStatus();
-      if (castContext.getDeviceCapabilities().touch_input_supported) {
-        this._breakFree();
-      }
     });
   }
 
@@ -264,14 +261,6 @@ export class HcMain extends HassElement {
     }
   }
 
-  private _breakFree() {
-    const controls = document.body.querySelector("touch-controls");
-    if (controls) {
-      controls.remove();
-    }
-    document.body.setAttribute("style", "overflow-y: auto !important");
-  }
-
   private sendMessage(senderId: string, response: any) {
     castContext.sendCustomMessage(CAST_NS, senderId, response);
   }

cast/src/receiver/second-load.ts

@@ -1,4 +1,4 @@
 import "web-animations-js/web-animations-next-lite.min";
-import "../../../src/resources/roboto";
 import "../../../src/resources/ha-style";
+import "../../../src/resources/roboto";
 import "./layout/hc-lovelace";