Add Typescript support

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ on:
     branches:
       - main
   schedule:
-    - cron: "0 3 * * 0" # every Sunday at 3am
+    - cron: '0 3 * * 0' # every Sunday at 3am
 
 env:
   CI: true
@@ -22,7 +22,7 @@ jobs:
         run: pnpm lint
 
   test_type_checking:
-    name: "Tests: Type Check"
+    name: 'Tests: Type Check'
     timeout-minutes: 5
     runs-on: ubuntu-latest
 
@@ -47,10 +47,10 @@ jobs:
           - defaults with pnpm
           - addon-location
           - test-app-location
+          - typescript
     steps:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/pnpm
       - run: pnpm add --global ember-cli yarn
       - run: pnpm vitest --testNamePattern "${{ matrix.slow-test }}"
         working-directory: tests
-

.prettierrc.js

@@ -2,4 +2,5 @@
 
 module.exports = {
   singleQuote: true,
+  printWidth: 100,
 };

files/__addonLocation__/.eslintrc.js

@@ -2,16 +2,16 @@
 
 module.exports = {
   root: true,
-  parser: '@babel/eslint-parser',
+  parser: '<%= typescript ? '@typescript-eslint/parser' : '@babel/eslint-parser' %>',
   parserOptions: {
-    ecmaVersion: 'latest',
+    ecmaVersion: 'latest',<% if (!typescript) { %>
     sourceType: 'module',
     ecmaFeatures: {
       legacyDecorators: true,
     },
     babelOptions: {
       root: __dirname,
-    },
+    },<% } %>
   },
   plugins: ['ember'],
   extends: [
@@ -24,7 +24,18 @@ module.exports = {
   },
   rules: {},
   overrides: [
-    // node files
+<% if (typescript) { %>    // ts files
+    {
+      files: ['**/*.ts'],
+      extends: [
+        'plugin:@typescript-eslint/eslint-recommended',
+        'plugin:@typescript-eslint/recommended',
+      ],
+      rules: {
+        // Add any custom rules here
+      },
+    },
+<% } %>    // node files
     {
       files: [
         './.eslintrc.js',

files/__addonLocation__/babel.config.json

@@ -1,5 +1,6 @@
 {
-  "plugins": [
+<% if (typescript) { %>  "presets": [["@babel/preset-typescript"]],
+<% } %>  "plugins": [
     "@embroider/addon-dev/template-colocation-plugin",
     ["@babel/plugin-proposal-decorators", { "legacy": true }],
     "@babel/plugin-proposal-class-properties"

files/__addonLocation__/package.json

@@ -19,7 +19,8 @@
     "lint:hbs": "ember-template-lint . --no-error-on-unmatched-pattern",
     "lint:js": "eslint . --cache",
     "lint:hbs:fix": "ember-template-lint . --fix --no-error-on-unmatched-pattern",
-    "lint:js:fix": "eslint . --fix",
+    "lint:js:fix": "eslint . --fix",<% if (typescript) { %>
+    "lint:types": "glint",<% } %>
     "start": "rollup --config --watch",
     "test": "echo 'A v2 addon does not have tests, run tests in test-app'",
     "prepack": "rollup --config"
@@ -29,12 +30,35 @@
   },
   "devDependencies": {
     "@babel/core": "^7.17.0",
-    "@babel/eslint-parser": "^7.18.2",
+    <% if (typescript) { %>"@babel/preset-typescript": "^7.18.6"<% } else { %>"@babel/eslint-parser": "^7.18.2"<% } %>,
     "@babel/plugin-proposal-class-properties": "^7.16.7",
     "@babel/plugin-proposal-decorators": "^7.17.0",
     "@babel/plugin-syntax-decorators": "^7.17.0",
-    "@embroider/addon-dev": "^1.0.0",
-    "@rollup/plugin-babel": "^5.3.0",
+    "@embroider/addon-dev": "^2.0.0",<% if (typescript) { %>
+    "@glint/core": "^0.9.7",
+    "@glint/environment-ember-loose": "^0.9.7",
+    "@tsconfig/ember": "^1.0.0",
+    "@types/ember": "^4.0.0",
+    "@types/ember__object": "^4.0.0",
+    "@types/ember__service": "^4.0.0",
+    "@types/ember__controller": "^4.0.0",
+    "@types/ember__string": "^3.16.0",
+    "@types/ember__template": "^4.0.0",
+    "@types/ember__polyfills": "^4.0.0",
+    "@types/ember__utils": "^4.0.0",
+    "@types/ember__runloop": "^4.0.0",
+    "@types/ember__debug": "^4.0.0",
+    "@types/ember__engine": "^4.0.0",
+    "@types/ember__application": "^4.0.0",
+    "@types/ember__test": "^4.0.0",
+    "@types/ember__array": "^4.0.0",
+    "@types/ember__error": "^4.0.0",
+    "@types/ember__component": "^4.0.0",
+    "@types/ember__routing": "^4.0.0",
+    "@types/ember__test-helpers": "^2.6.1",
+    "@typescript-eslint/eslint-plugin": "^5.30.5",
+    "@typescript-eslint/parser": "^5.30.5",<% } else { %>
+    "@rollup/plugin-babel": "^5.3.0",<% } %>
     "concurrently": "^7.2.1",
     "ember-template-lint": "^4.0.0",
     "eslint": "^7.32.0",
@@ -44,7 +68,9 @@
     "eslint-plugin-prettier": "^4.0.0",
     "prettier": "^2.5.1",
     "rollup": "^2.67.0",
-    "rollup-plugin-copy": "^3.4.0"
+    "rollup-plugin-copy": "^3.4.0"<% if (typescript) { %>,
+    "rollup-plugin-ts": "^3.0.2",
+    "typescript": "^4.7.4"<% } %>
   },
   "publishConfig": {
     "registry": "https://registry.npmjs.org"
@@ -58,8 +84,19 @@
     "main": "addon-main.js"
   },
   "exports": {
-    ".": "./dist/index.js",
-    "./*": "./dist/*",
+    ".": "./dist/index.js", <% if (typescript) { %>
+    "./*": {
+      "types": "./dist/*.d.ts",
+      "default": "./dist/*.js"
+    },<% } else { %>
+    "./*": "./dist/*.js",<% } %>
     "./addon-main.js": "./addon-main.js"
-  }
+  }<% if (typescript) { %>,
+  "typesVersions": {
+    "*": {
+      "*": [
+        "dist/*"
+      ]
+    }
+  }<% } %>
 }

files/__addonLocation__/rollup.config.js → files/__addonLocation__/rollup.config.__rollupExt__

@@ -1,4 +1,4 @@
-import babel from '@rollup/plugin-babel';
+<% if (typescript) { %>import typescript from 'rollup-plugin-ts';<% } else { %>import babel from '@rollup/plugin-babel';<% } %>
 import copy from 'rollup-plugin-copy';
 import { Addon } from '@embroider/addon-dev/rollup';
 
@@ -15,14 +15,20 @@ export default {
   plugins: [
     // These are the modules that users should be able to import from your
     // addon. Anything not listed here may get optimized away.
-    addon.publicEntrypoints(['components/**/*.js', 'index.js']),
+    addon.publicEntrypoints(['components/**/*.js', 'index.js'<% if (typescript) {%>, 'template-registry.js'<% } %>]),
 
     // These are the modules that should get reexported into the traditional
     // "app" tree. Things in here should also be in publicEntrypoints above, but
     // not everything in publicEntrypoints necessarily needs to go here.
     addon.appReexports(['components/**/*.js']),
 
-    // This babel config should *not* apply presets or compile away ES modules.
+<% if (typescript) { %>    // compile TypeScript to latest JavaScript, including Babel transpilation
+    typescript({
+      transpiler: 'babel',
+      browserslist: false,
+      transpileOnly: false,
+    }),
+<% } else { %>    // This babel config should *not* apply presets or compile away ES modules.
     // It exists only to provide development niceties for you, like automatic
     // template colocation.
     //
@@ -31,7 +37,7 @@ export default {
     babel({
       babelHelpers: 'bundled',
     }),
-
+<% } %>
     // Follow the V2 Addon rules about dependencies. Your code can import from
     // `dependencies` and `peerDependencies` as well as standard Ember-provided
     // package names.

files/__addonLocation__/src/template-registry.ts

@@ -0,0 +1,11 @@
+// Easily allow apps, which are not yet using strict mode templates, to consume your Glint types, by importing this file.
+// Add all your components, helpers and modifiers to the template registry here, so apps don't have to do this.
+// See https://typed-ember.gitbook.io/glint/using-glint/ember/authoring-addons
+
+// import type MyComponent from './components/my-component';
+
+// Remove this once entries have been added! 👇
+// eslint-disable-next-line @typescript-eslint/no-empty-interface
+export default interface Registry {
+  // MyComponent: typeof MyComponent
+}

files/__addonLocation__/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "extends": "@tsconfig/ember/tsconfig.json",
+  "include": [
+    "src/**/*",
+    "unpublished-development-types/**/*"
+  ],
+  "glint": {
+    "environment": "ember-loose"
+  }
+}

files/__addonLocation__/unpublished-development-types/index.d.ts

@@ -0,0 +1,13 @@
+// Add any types here that you need for local development only.
+// These will *not* be published as part of your addon, so be careful that your published code does not rely on them!
+
+import '@glint/environment-ember-loose';
+
+declare module '@glint/environment-ember-loose/registry' {
+  // Remove this once entries have been added! 👇
+  // eslint-disable-next-line @typescript-eslint/no-empty-interface
+  export default interface Registry {
+    // Add any registry entries from other addons here that your addon itself uses (in non-strict mode templates)
+    // See https://typed-ember.gitbook.io/glint/using-glint/ember/using-addons
+  }
+}

index.js

@@ -7,6 +7,7 @@ const sortPackageJson = require('sort-package-json');
 const normalizeEntityName = require('ember-cli-normalize-entity-name');
 const execa = require('execa');
 const { merge } = require('lodash');
+const { lt } = require('semver');
 
 let date = new Date();
 
@@ -20,13 +21,42 @@ module.exports = {
   description,
 
   async afterInstall(options) {
+    let tasks = [this.createTestApp(options)];
+    let addonInfo = addonInfoFromOptions(options);
+    let testAppInfo = testAppInfoFromOptions(options);
+
+    /**
+     * Setup root package.json scripts based on the packager
+     */
+    tasks.push(
+      (async () => {
+        let packageJson = path.join(options.target, 'package.json');
+        let json = await fs.readJSON(packageJson);
+
+        json.scripts = scripts(options);
+
+        await fs.writeFile(packageJson, JSON.stringify(json, null, 2));
+      })()
+    );
+
+    if (options.pnpm) {
+      tasks.push(pnpm.createWorkspacesFile(options.target, addonInfo, testAppInfo));
+    }
+
+    if (options.releaseIt) {
+      tasks.push(this.setupReleaseIt(options.target));
+    }
+
+    await Promise.all(tasks);
+  },
+
+  async createTestApp(options) {
     const appBlueprint = this.lookupBlueprint('app');
 
     if (!appBlueprint) {
       throw new SilentError('Cannot find app blueprint for generating test-app!');
     }
 
-    let addonInfo = addonInfoFromOptions(options);
     let testAppInfo = testAppInfoFromOptions(options);
     let testAppPath = path.join(options.target, testAppInfo.location);
 
@@ -44,39 +74,26 @@ module.exports = {
 
     await appBlueprint.install(appOptions);
 
-    let tasks = [
+    await Promise.all([
       this.updateTestAppPackageJson(path.join(testAppPath, 'package.json')),
       this.overrideTestAppFiles(testAppPath, path.join(options.target, 'test-app-overrides')),
       fs.unlink(path.join(testAppPath, '.travis.yml')),
-    ];
-
-    /**
-     * Setup root package.json scripts based on the packager
-     */
-    tasks.push(
-      (async () => {
-        let packageJson = path.join(options.target, 'package.json');
-        let json = await fs.readJSON(packageJson);
-
-        json.scripts = scripts(options);
-
-        await fs.writeFile(packageJson, JSON.stringify(json, null, 2));
-      })()
-    );
+    ]);
 
-    if (options.pnpm) {
-      tasks.push(pnpm.createWorkspacesFile(options.target, addonInfo, testAppInfo));
-    }
+    if (options.typescript) {
+      const needsVersion = '4.9.0-beta.0';
+      const hasVersion = this.project.emberCLIVersion();
 
-    if (options.releaseIt) {
-      tasks.push(this.setupReleaseIt(options.target));
+      if (lt(hasVersion, needsVersion)) {
+        this.ui.writeWarnLine(
+          `Your version ${hasVersion} of Ember CLI does not support the --typescript flag yet. Please run \`ember install ember-cli-typescript\` in the ${testAppInfo.location} folder manually!`
+        );
+      }
     }
-
-    await Promise.all(tasks);
   },
 
   async updateTestAppPackageJson(packageJsonPath) {
-    const pkg = require(packageJsonPath);
+    const pkg = await fs.readJSON(packageJsonPath);
     const additions = require('./additional-test-app-package.json');
 
     merge(pkg, additions);
@@ -105,11 +122,13 @@ module.exports = {
   },
 
   fileMapTokens(options) {
-    let { addonInfo, testAppInfo } = options.locals;
+    let { addonInfo, testAppInfo, ext, typescript } = options.locals;
 
     return {
       __addonLocation__: () => addonInfo.location,
       __testAppLocation__: () => testAppInfo.location,
+      __ext__: () => ext,
+      __rollupExt__: () => (typescript ? 'mjs' : 'js'),
     };
   },
 
@@ -136,6 +155,7 @@ module.exports = {
           options.testAppLocation && `"--test-app-location=${options.testAppLocation}"`,
           options.testAppName && `"--test-app-name=${options.testAppName}"`,
           options.releaseIt && `"--release-it"`,
+          options.typescript && `"--typescript"`,
         ]
           .filter(Boolean)
           .join(',\n            ') +
@@ -158,13 +178,29 @@ module.exports = {
       pnpm: options.pnpm,
       npm: options.npm,
       welcome: options.welcome,
+      typescript: options.typescript,
+      ext: options.typescript ? 'ts' : 'js',
       blueprint: 'addon',
       blueprintOptions,
       ciProvider: options.ciProvider,
       pathFromAddonToRoot,
     };
   },
 
+  files(options) {
+    let files = this._super.files.apply(this, arguments);
+
+    if (options.typescript) {
+      return files;
+    } else {
+      let ignoredFiles = ['__addonLocation__/tsconfig.json'];
+
+      return files.filter(
+        (filename) => !filename.match(/.*\.ts$/) && !ignoredFiles.includes(filename)
+      );
+    }
+  },
+
   normalizeEntityName(entityName) {
     entityName = normalizeEntityName(entityName);