Breaking/Upgrade to Ember 4

.editorconfig

@@ -4,7 +4,6 @@
 
 root = true
 
-
 [*]
 end_of_line = lf
 charset = utf-8

.ember-cli

@@ -5,5 +5,11 @@
 
     Setting `disableAnalytics` to true will prevent any data from being sent.
   */
-  "disableAnalytics": false
+  "disableAnalytics": false,
+
+  /**
+  Setting `isTypeScriptProject` to true will force the blueprint generators to generate TypeScript
+  rather than JavaScript by default, when a TypeScript version of a given blueprint is available.
+  */
+  "isTypeScriptProject": false
 }

.eslintignore

@@ -1 +1,25 @@
-/blueprints/*/files/**/*.js
+# unconventional js
+/blueprints/*/files/
+/vendor/
+
+# compiled output
+/dist/
+/tmp/
+
+# dependencies
+/bower_components/
+/node_modules/
+
+# misc
+/coverage/
+!.*
+.*/
+.eslintcache
+
+# ember-try
+/.node_modules.ember-try/
+/bower.json.ember-try
+/npm-shrinkwrap.json.ember-try
+/package.json.ember-try
+/package-lock.json.ember-try
+/yarn.lock.ember-try

.eslintrc.js

@@ -1,50 +1,53 @@
+'use strict';
+
 module.exports = {
   root: true,
+  parser: 'babel-eslint',
   parserOptions: {
-    ecmaVersion: 2017,
-    sourceType: 'module'
+    ecmaVersion: 2018,
+    sourceType: 'module',
+    ecmaFeatures: {
+      legacyDecorators: true,
+    },
   },
-  plugins: [
-    'ember'
-  ],
+  plugins: ['ember'],
   extends: [
     'eslint:recommended',
-    'plugin:ember/recommended'
+    'plugin:ember/recommended',
+    'plugin:prettier/recommended',
   ],
   env: {
-    browser: true
-  },
-  rules: {
+    browser: true,
   },
+  rules: {},
   overrides: [
     // node files
     {
       files: [
-        'ember-cli-build.js',
-        'index.js',
-        'testem.js',
-        'blueprints/*/index.js',
-        'config/**/*.js',
-        'tests/dummy/config/**/*.js'
-      ],
-      excludedFiles: [
-        'addon/**',
-        'addon-test-support/**',
-        'app/**',
-        'tests/dummy/app/**'
+        './.eslintrc.js',
+        './.prettierrc.js',
+        './.template-lintrc.js',
+        './ember-cli-build.js',
+        './index.js',
+        './testem.js',
+        './blueprints/*/index.js',
+        './config/**/*.js',
+        './tests/dummy/config/**/*.js',
       ],
       parserOptions: {
         sourceType: 'script',
-        ecmaVersion: 2015
       },
       env: {
         browser: false,
-        node: true
+        node: true,
       },
       plugins: ['node'],
-      rules: Object.assign({}, require('eslint-plugin-node').configs.recommended.rules, {
-        // add your custom rules and overrides for node files here
-      })
-    }
-  ]
+      extends: ['plugin:node/recommended'],
+    },
+    {
+      // test files
+      files: ['tests/**/*-test.{js,ts}'],
+      extends: ['plugin:qunit/recommended'],
+    },
+  ],
 };

.github/workflows/ci.yml

@@ -0,0 +1,76 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - master
+  pull_request: {}
+
+concurrency:
+  group: ci-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: "Tests"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 12.x
+          cache: npm
+      - name: Install Dependencies
+        run: npm ci
+      - name: Lint
+        run: npm run lint
+      - name: Run Tests
+        run: npm run test:ember
+
+  floating:
+    name: "Floating Dependencies"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 12.x
+          cache: npm
+      - name: Install Dependencies
+        run: npm install --no-shrinkwrap
+      - name: Run Tests
+        run: npm run test:ember
+
+  try-scenarios:
+    name: ${{ matrix.try-scenario }}
+    runs-on: ubuntu-latest
+    needs: "test"
+
+    strategy:
+      fail-fast: false
+      matrix:
+        try-scenario:
+          - ember-lts-3.24
+          - ember-lts-3.28
+          - ember-release
+          - ember-beta
+          - ember-canary
+          - ember-classic
+          - embroider-safe
+          - embroider-optimized
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 12.x
+          cache: npm
+      - name: Install Dependencies
+        run: npm ci
+      - name: Run Tests
+        run: ./node_modules/.bin/ember try:one ${{ matrix.try-scenario }}

.gitignore

@@ -1,23 +1,32 @@
 # See https://help.github.com/ignore-files/ for more about ignoring files.
 
 # compiled output
-/dist
-/tmp
+/dist/
+/tmp/
 
 # dependencies
-/node_modules
-/bower_components
+/bower_components/
+/node_modules/
 
 # misc
+/.env*
+/.pnp*
 /.sass-cache
+/.eslintcache
 /connect.lock
-/coverage/*
+/coverage/
 /libpeerconnection.log
-npm-debug.log*
-yarn-error.log
-testem.log
+/npm-debug.log*
+/testem.log
+/yarn-error.log
 
 # ember-try
-.node_modules.ember-try/
-bower.json.ember-try
-package.json.ember-try
+/.node_modules.ember-try/
+/bower.json.ember-try
+/npm-shrinkwrap.json.ember-try
+/package.json.ember-try
+/package-lock.json.ember-try
+/yarn.lock.ember-try
+
+# broccoli-debug
+/DEBUG/

.npmignore

@@ -1,21 +1,40 @@
-/bower_components
+# compiled output
+/dist/
+/tmp/
+
+# dependencies
+/bower_components/
+
+# misc
+/.bowerrc
+/.editorconfig
+/.ember-cli
+/.env*
+/.eslintcache
+/.eslintignore
+/.eslintrc.js
+/.git/
+/.github/
+/.gitignore
+/.prettierignore
+/.prettierrc.js
+/.template-lintrc.js
+/.travis.yml
+/.watchmanconfig
+/bower.json
 /config/ember-try.js
-/dist
-/tests
-/tmp
-**/.gitkeep
-.bowerrc
-.editorconfig
-.ember-cli
-.eslintrc.js
-.gitignore
-.watchmanconfig
-.travis.yml
-bower.json
-ember-cli-build.js
-testem.js
+/CONTRIBUTING.md
+/ember-cli-build.js
+/testem.js
+/tests/
+/yarn-error.log
+/yarn.lock
+.gitkeep
 
 # ember-try
-.node_modules.ember-try/
-bower.json.ember-try
-package.json.ember-try
+/.node_modules.ember-try/
+/bower.json.ember-try
+/npm-shrinkwrap.json.ember-try
+/package.json.ember-try
+/package-lock.json.ember-try
+/yarn.lock.ember-try

.prettierignore

@@ -0,0 +1,25 @@
+# unconventional js
+/blueprints/*/files/
+/vendor/
+
+# compiled output
+/dist/
+/tmp/
+
+# dependencies
+/bower_components/
+/node_modules/
+
+# misc
+/coverage/
+!.*
+.eslintcache
+.lint-todo/
+
+# ember-try
+/.node_modules.ember-try/
+/bower.json.ember-try
+/npm-shrinkwrap.json.ember-try
+/package.json.ember-try
+/package-lock.json.ember-try
+/yarn.lock.ember-try

.prettierrc.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = {
+  singleQuote: true,
+};

.template-lintrc.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = {
+  extends: 'recommended',
+};