Assure gts works

AUTHORING_LIBRARIES.md

@@ -39,10 +39,21 @@ If you've done ESM in node, this should feel familiar, and we can be be consiste
 import { AnotherThing } from './path/to/file.js';
 ```
 
+Generally, import:
+- gjs with `./path/to/file.gjs`
+- gts with `./path/to/file.gts`
+- js with `./path/to/file.js`
+- ts with `./path/to/file.ts`
+- hbs with `./path/to/file.js` or `./path/to/file`
+
 A couple caveats with older, co-located components,
- - for `.hbs` / template-only components, the import path is still `.js`, because we transform it.
+ - for `.hbs` / template-only components, no extension is needed, but the js extension can be used.
  - for co-located components, where the template is in a separate `.hbs` file, you may not import that `.hbs` file directly, because it is merged in with the associated `.js` or `.ts` file.
 
+For consumers of your library, they will not need to worry about the extensions, because:
+- rollup compiles away the implementation details (non-js modules)
+- package.json#exports declares what is importable under what path, and maps non-extension imports to files with extensions
+
 
 ## CSS
 

files/__addonLocation__/package.json

@@ -43,9 +43,10 @@
     "@babel/plugin-transform-class-static-block": "^7.20.0",
     "@babel/runtime": "^7.17.0",
     "@embroider/addon-dev": "^4.1.0",<% if (typescript) { %>
-    "@glint/core": "^1.0.2",
-    "@glint/environment-ember-loose": "^1.0.2",
-    "@glint/template": "^1.0.2",
+    "@glint/core": "^1.2.0",
+    "@glint/environment-ember-loose": "^1.2.0",
+    "@glint/environment-ember-template-imports": "^1.2.0",
+    "@glint/template": "^1.2.0",
     "@tsconfig/ember": "^2.0.0",
     "@types/ember": "^4.0.4",
     "@types/ember__object": "^4.0.6",
@@ -64,6 +65,8 @@
     "@types/ember__array": "^4.0.4",
     "@types/ember__error": "^4.0.3",
     "@types/ember__component": "^4.0.14",
+    "@types/ember__modifier": "^4.0.6",
+    "@types/ember__helper": "^4.0.3",
     "@types/ember__routing": "^4.0.13",
     "@typescript-eslint/eslint-plugin": "^6.7.2",
     "@typescript-eslint/parser": "^6.7.2",<% } %>

files/__addonLocation__/tsconfig.json

@@ -5,7 +5,7 @@
     "unpublished-development-types/**/*"
   ],
   "glint": {
-    "environment": "ember-loose"
+    "environment": ["ember-loose", "ember-template-imports"]
   },
   "compilerOptions": {
     "allowJs": true,

tests/fixtures/typescript/my-addon/src/components/template-only.ts

@@ -0,0 +1,3 @@
+import templateOnly from '@ember/component/template-only';
+
+export default templateOnly();

tests/helpers/utils.ts

@@ -22,6 +22,46 @@ export async function createTmp() {
   return tmpDirPath;
 }
 
+const ROLLUP_HASH = /[a-f0-9]{8}/
+
+/**
+* Filters out rollup-hashes from a list of files.
+*
+* When there are private files, rollup will add some
+* hash to the emitted file path, 
+* such as:
+*   template-only-ab2e7769.js.map
+*
+* These hashes have predictable length, so we can have
+* a fairly narrow matcher to remove them.
+*/
+export function withoutHashes(names: string[]) {
+  return names.filter(name => !ROLLUP_HASH.test(name)); 
+}
+
+/**
+* Filters out a list of files, keeping only the rollup-emitted hashed files
+*
+* When there are private files, rollup will add some
+* hash to the emitted file path, 
+* such as:
+*   template-only-ab2e7769.js.map
+*
+* These hashes have predictable length, so we can have
+* a fairly narrow matcher to remove them.
+* This a
+*/
+export function hashesOnly(names: string[]) {
+  return names.filter(name => ROLLUP_HASH.test(name)); 
+}
+
+export function splitHashedFiles(names: string[]) {
+  return {
+    hashed: hashesOnly(names),
+    unhashed: withoutHashes(names),
+  };
+}
+
 /**
  * Abstraction for install, as the blueprint supports multiple package managers
  */

tests/smoke-tests/--typescript.test.ts

@@ -7,6 +7,7 @@ import {
   AddonHelper,
   assertGeneratedCorrectly,
   dirContents,
+  splitHashedFiles,
   SUPPORTED_PACKAGE_MANAGERS,
 } from '../helpers.js';
 
@@ -71,13 +72,12 @@ for (let packageManager of SUPPORTED_PACKAGE_MANAGERS) {
 
       expect(buildResult.exitCode).toEqual(0);
 
-      let distContents = (await dirContents(distDir)).filter(
-        // these files have a hash that changes based on file contents
-        (distFile) => !distFile.startsWith('_rollupPluginBabelHelpers')
-      );
+      let distContents = splitHashedFiles(await dirContents(distDir));
       let declarationsContents = await dirContents(declarationsDir);
 
-      expect(distContents).to.deep.equal([
+
+
+      expect(distContents.unhashed).to.deep.equal([
         '_app_',
         'components',
         'index.js',
@@ -86,6 +86,18 @@ for (let packageManager of SUPPORTED_PACKAGE_MANAGERS) {
         'template-registry.js.map',
       ]);
 
+      expect(distContents.hashed.length).toBe(4);
+      expect(
+        distContents.hashed
+          .filter(file => file.includes('_rollup'))
+          .map(file => file.split('.js')[1])
+      ).to.deep.equal(["", '.map'], 'the rollup helpers are emitted with a source map');
+      expect(
+        distContents.hashed
+          .filter(file => file.includes('template-only'))
+          .map(file => file.split('.js')[1])
+      ).to.deep.equal(["", '.map'], 'the template-only component is emitted with a source map');
+
       expect(declarationsContents).to.deep.equal([
         'components',
         'index.d.ts',