feature: Updated the codemod so that v2 addons do not rely on rollup-plugin-ts

Author: ijlee2

src/blueprints/ember-addon/__addonLocation__/.eslintignore

@@ -2,6 +2,7 @@
 /blueprints/*/files/
 
 # compiled output
+/declarations/
 /dist/
 
 # misc

src/blueprints/ember-addon/__addonLocation__/__gitignore__

@@ -0,0 +1,12 @@
+# The authoritative copies of these live in the monorepo root (because they're
+# more useful on github that way), but the build copies them into here so they
+# will also appear in published NPM packages.
+/LICENSE.md
+/README.md
+
+# compiled output
+/declarations/
+/dist/
+
+# dependencies
+/node_modules/

src/blueprints/ember-addon/__addonLocation__/rollup.config.mjs

@@ -1,12 +1,16 @@
-<% if (options.packages.addon.hasTypeScript) { %>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';
+import { babel } from '@rollup/plugin-babel';
+import { nodeResolve } from '@rollup/plugin-node-resolve';
+import copy from 'rollup-plugin-copy';
 
 const addon = new Addon({
   srcDir: 'src',
   destDir: 'dist',
 });
 
+// Add extensions here, such as ts, gjs, etc that you may import
+const extensions = ['.js'<% if (options.packages.addon.hasTypeScript) { %>, '.ts'<% } %>];
+
 export default {
   // This provides defaults that work well alongside `publicEntrypoints` below.
   // You can augment this if you need to.
@@ -27,22 +31,22 @@ export default {
     // package names.
     addon.dependencies(),
 
-<% if (options.packages.addon.hasTypeScript) { %>    // 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.
+    // 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.
     //
     // By default, this will load the actual babel config from the file
     // babel.config.json.
     babel({
       babelHelpers: 'bundled',
+      extensions,
     }),
-<% } %>
+
+    // Allows rollup to resolve imports of files with the specified extensions
+    nodeResolve({
+      extensions,
+    }),
+
     // Ensure that standalone .hbs files are properly integrated as Javascript.
     addon.hbs(),
 

src/blueprints/ember-addon/__gitignore__

@@ -1,24 +1,11 @@
 # compiled output
-/dist/
+dist/
 
 # dependencies
-/node_modules/
+node_modules/
 
 # misc
 /.env*
-/.pnp*
-/.eslintcache
-/coverage/
+/.pnpm-debug.log
 /npm-debug.log*
-/testem.log
 /yarn-error.log
-
-# ember-try
-/.node_modules.ember-try/
-/npm-shrinkwrap.json.ember-try
-/package.json.ember-try
-/package-lock.json.ember-try
-/yarn.lock.ember-try
-
-# broccoli-debug
-/DEBUG/

src/migration/ember-addon/steps/update-addon-package-json.ts

@@ -62,14 +62,14 @@ function updateDevDependencies(
     '@babel/runtime',
     '@embroider/addon-dev',
     '@rollup/plugin-babel',
+    '@rollup/plugin-node-resolve',
+    'concurrently',
     'rollup',
     'rollup-plugin-copy',
   ]);
 
   if (packages.addon.hasTypeScript) {
     packagesToInstall.add('@babel/preset-typescript');
-    packagesToInstall.add('rollup-plugin-ts');
-    packagesToInstall.delete('@rollup/plugin-babel');
   }
 
   Array.from(packagesToInstall)
@@ -122,12 +122,15 @@ function updateOtherFields(
 
   if (packages.addon.hasTypeScript) {
     packageJson['exports'] = {
-      '.': './dist/index.js',
+      '.': {
+        types: './declarations/index.d.ts',
+        default: './dist/index.js',
+      },
       './*': {
         /*
           This object has an order dependency. The `default` key must appear last.
         */
-        types: './dist/*.d.ts',
+        types: './declarations/*.d.ts',
         default: './dist/*.js',
       },
       './addon-main.js': './addon-main.cjs',
@@ -140,27 +143,56 @@ function updateOtherFields(
     };
   }
 
+  const files = new Set(['addon-main.cjs', 'dist']);
+
   if (hasPublicAssets) {
-    packageJson['files'] = ['addon-main.cjs', 'dist', 'public'];
-  } else {
-    packageJson['files'] = ['addon-main.cjs', 'dist'];
+    files.add('public');
   }
 
+  if (packages.addon.hasTypeScript) {
+    files.add('declarations');
+  }
+
+  packageJson['files'] = Array.from(files).sort();
+
   if (packages.addon.hasTypeScript) {
     packageJson['typesVersions'] = {
       '*': {
-        '*': ['dist/*'],
+        '*': ['declarations/*'],
       },
     };
   }
 }
 
-function updateScripts(packageJson: PackageJson): void {
+function updateScripts(packageJson: PackageJson, options: Options): void {
+  const { packages } = options;
+
   const scripts = convertToMap(packageJson['scripts']);
 
-  scripts.set('build', 'rollup --config');
+  if (packages.addon.hasTypeScript) {
+    scripts.set('build', 'concurrently "npm:build:*"');
+    scripts.set('build:js', 'rollup --config');
+    scripts.set(
+      'build:types',
+      packages.addon.hasGlint ? 'glint --declaration' : 'tsc --declaration',
+    );
+  } else {
+    scripts.set('build', 'rollup --config');
+  }
+
   scripts.set('prepack', 'rollup --config');
-  scripts.set('start', 'rollup --config --watch');
+
+  if (packages.addon.hasTypeScript) {
+    scripts.set('start', 'concurrently "npm:start:*"');
+    scripts.set('start:js', 'rollup --config --watch');
+    scripts.set(
+      'start:types',
+      packages.addon.hasGlint ? 'glint --watch' : 'tsc --watch',
+    );
+  } else {
+    scripts.set('start', 'rollup --config --watch');
+  }
+
   scripts.set(
     'test',
     "echo 'A v2 addon does not have tests, run tests in test-app'",
@@ -181,7 +213,7 @@ export function updateAddonPackageJson(
 
   updateDependencies(packageJson, options);
   updateDevDependencies(packageJson, options);
-  updateScripts(packageJson);
+  updateScripts(packageJson, options);
   updateOtherFields(packageJson, context, options);
 
   const destination = join(projectRoot, locations.addon, 'package.json');

src/migration/ember-addon/steps/update-addon-tsconfig-json.ts

@@ -11,6 +11,7 @@ function updateCompilerOptions(tsConfigJson: TsConfigJson): void {
 
   compilerOptions.delete('baseUrl');
   compilerOptions.delete('paths');
+  compilerOptions.set('declarationDir', 'declarations');
 
   tsConfigJson['compilerOptions'] = convertToObject(compilerOptions);
 }

src/utils/blueprints/get-version.ts

@@ -11,13 +11,13 @@ const latestVersions = new Map([
   ['@embroider/addon-dev', '3.1.1'],
   ['@embroider/addon-shim', '1.8.5'],
   ['@rollup/plugin-babel', '6.0.3'],
+  ['@rollup/plugin-node-resolve', '15.1.0'],
   ['concurrently', '8.2.0'],
   ['ember-auto-import', '2.6.3'],
   ['ember-cli-babel', '7.26.11'],
   ['ember-cli-htmlbars', '6.2.0'],
   ['rollup', '3.26.0'],
   ['rollup-plugin-copy', '3.4.0'],
-  ['rollup-plugin-ts', '3.2.0'],
 ]);
 
 export function getVersion(packageName: string, options: Options): string {