diff --git a/packages/addon-dev/sample-typescript-rollup.config.js b/packages/addon-dev/sample-typescript-rollup.config.js
index 12779d1e1..c1c12d0fe 100644
--- a/packages/addon-dev/sample-typescript-rollup.config.js
+++ b/packages/addon-dev/sample-typescript-rollup.config.js
@@ -10,94 +10,28 @@
 import path from 'path';
 
 import alias from '@rollup/plugin-alias';
-import multiInput from 'rollup-plugin-multi-input';
 import ts from 'rollup-plugin-ts';
 import { defineConfig } from 'rollup';
-import { nodeResolve } from '@rollup/plugin-node-resolve';
 import { Addon } from '@embroider/addon-dev/rollup';
 
-import babelConfig from './babel.config';
-import packageJson from '../package.json';
+import packageJson from './package.json';
 
 const addon = new Addon({
   srcDir: 'src',
   destDir: 'dist',
 });
 
-const transpilation = [
-  // Instruct rollup how to resolve ts and hbs imports
-  // (importing a template-only component, for example)
-  nodeResolve({ resolveOnly: ['./'], extensions: ['.js', '.ts', '.hbs'] }),
-
-  // Allow top-level imports (what folks are used to from v1 addons)
-  // During the build, anything referencing a top-level import will be
-  // replaced with a relative import.
-  // DANGER: it's somewhat easy to cause circular references with this tool
-  alias({
-    entries: [
-      {
-        find: '#types',
-        replacement: path.resolve('src', '-private', 'types.ts'),
-      },
-      {
-        find: packageJson.name,
-        replacement: path.resolve('src'),
-      },
-      {
-        find: `${packageJson.name}/(.*)`,
-        replacement: path.resolve('src/$1'),
-      },
-    ],
-  }),
-
-  // 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.
-  // See `babel.config.json` for the actual Babel configuration!
-  ts({
-    // can be changed to swc or other transpilers later
-    // but we need the ember plugins converted first
-    // (template compilation and co-location)
-    transpiler: 'babel',
-    browserslist: false,
-    babelConfig,
-    // setting this true greatly improves performance, but
-    // at the cost of safety (and no declarations output in your dist directory).
-    transpileOnly: false,
-    tsconfig: {
-      fileName: 'tsconfig.json',
-      hook: (config) => ({ ...config, declaration: true }),
-    },
-  }),
-
-  // Follow the V2 Addon rules about dependencies. Your code can import from
-  // `dependencies` and `peerDependencies` as well as standard Ember-provided
-  // package names.
-  addon.dependencies(),
-
-  // Ensure that standalone .hbs files are properly integrated as Javascript.
-  addon.hbs(),
-
-  // addons are allowed to contain imports of .css files, which we want rollup
-  // to leave alone and keep in the published output.
-  // addon.keepAssets(['**/*.css']),
+const globallyAvailable = [
+  'components/**/*.{js,ts}', 'services/**/*.{js,ts}', 'helpers/**/*.{js,ts}',
+  'instance-initializers/**/*.{js,ts}'
 ];
 
-// these should be JS, even though the authored format is TS
-const globallyAvailable = ['components/**/*.js', 'services/*.js'];
-
 export default defineConfig({
-  input: ['src/**/*{js,hbs,ts}'],
   output: addon.output(),
   plugins: [
-    // allows specifying glob inputs so we can transpile each module separately
-    multiInput(),
-
-    ...transpilation,
-
     // These are the modules that users should be able to import from your
     // addon. Anything not listed here may get optimized away.
-    addon.publicEntrypoints([...globallyAvailable]),
+    addon.publicEntrypoints(['*.{js,ts}', ...globallyAvailable]),
 
     // These are the modules that should get reexported into the traditional
     // "app" tree. Things in here should also be in publicEntrypoints above, but
@@ -107,6 +41,62 @@ export default defineConfig({
     // and updates an 'ember-addon.app-js' entry in your package.json
     addon.appReexports([...globallyAvailable]),
 
+    // Allow top-level imports (what folks are used to from v1 addons)
+    // During the build, anything referencing a top-level import will be
+    // replaced with a relative import.
+    // DANGER: it's somewhat easy to cause circular references with this tool
+    alias({
+      entries: [
+        {
+          find: '#types',
+          replacement: path.resolve('src', '-private', 'types.ts'),
+        },
+        {
+          find: packageJson.name,
+          replacement: path.resolve('src'),
+        },
+        {
+          find: `${packageJson.name}/(.*)`,
+          replacement: path.resolve('src/$1'),
+        },
+      ],
+    }),
+
+    // 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.
+    // See `babel.config.json` for the actual Babel configuration!
+    ts({
+      // can be changed to swc or other transpilers later
+      // but we need the ember plugins converted first
+      // (template compilation and co-location)
+      transpiler: 'babel',
+      browserslist: false,
+      // NOTE: babel config must be CJS if in the same directory as CWD
+      //       https://github.com/wessberg/rollup-plugin-ts/issues/167
+      //       otherwise ESM babel.config.js can be imported and set here
+      // babelConfig,
+      // setting this true greatly improves performance, but
+      // at the cost of safety (and no declarations output in your dist directory).
+      transpileOnly: false,
+      tsconfig: {
+        fileName: 'tsconfig.json',
+        hook: (config) => ({ ...config, declaration: true }),
+      },
+    }),
+
+    // Follow the V2 Addon rules about dependencies. Your code can import from
+    // `dependencies` and `peerDependencies` as well as standard Ember-provided
+    // package names.
+    addon.dependencies(),
+
+    // Ensure that standalone .hbs files are properly integrated as Javascript.
+    addon.hbs(),
+
+    // addons are allowed to contain imports of .css files, which we want rollup
+    // to leave alone and keep in the published output.
+    addon.keepAssets(['**/*.css']),
+
     // Remove leftover build artifacts when starting a new build.
     addon.clean(),
   ],