Merge pull request #492 from appuniversum/fix/babel-plugin-ember-template-compilation-v2.2.2-support

Resolve some issues with `babel-plugin-ember-template-compilation` v2.2.2+

Author: Windvis

addon/components/au-icon.gts

@@ -1,6 +1,6 @@
 import { getOwner } from '@ember/owner';
 import Component from '@glimmer/component';
-import { type ComponentLike } from '@glint/template';
+import type { ComponentLike } from '@glint/template';
 
 export interface AuIconSignature {
   Args: {

index.js

@@ -6,7 +6,18 @@ module.exports = {
   options: {
     babel: {
       // This is needed for dynamic imports to work: https://github.com/ef4/ember-auto-import#installing-ember-auto-import-in-an-addon
-      plugins: [require.resolve('ember-auto-import/babel-plugin')],
+      plugins: [
+        require.resolve('ember-auto-import/babel-plugin'),
+        // Copied from the v2 addon blueprint: https://github.com/embroider-build/addon-blueprint/blob/eef35575e7130ffe3b588ecd83c637f35fa56220/files/__addonLocation__/babel.config.json#L3
+        [
+          '@babel/plugin-transform-typescript',
+          {
+            allExtensions: true,
+            onlyRemoveTypeImports: true,
+            allowDeclareFields: true,
+          },
+        ],
+      ],
     },
     'ember-cli-babel': { enableTypeScriptTransform: true },
   },