diff --git a/jest.config.js b/jest.config.js
index b430445631c..1cd6fe3013e 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,13 +1,13 @@
 module.exports = {
   preset: './testing/jest-preset.js',
   moduleNameMapper: {
-    '@app-data': '<rootDir>/internal/app-data/index.cjs.js',
-    '@app-globals': '<rootDir>/internal/app-globals/index.cjs.js',
+    '@app-data': '<rootDir>/internal/app-data/index.cjs',
+    '@app-globals': '<rootDir>/internal/app-globals/index.cjs',
     '@platform': '<rootDir>/internal/testing/index.js',
     '@runtime': '<rootDir>/internal/testing/index.js',
     '@stencil/core/cli': '<rootDir>/cli/index.js',
     '@stencil/core/compiler': '<rootDir>/compiler/stencil.js',
-    '@stencil/core/mock-doc': '<rootDir>/mock-doc/index.cjs.js',
+    '@stencil/core/mock-doc': '<rootDir>/mock-doc/index.cjs',
     '@stencil/core/testing': '<rootDir>/testing/index.js',
     '@utils': '<rootDir>/src/utils',
   },
diff --git a/scripts/bundles/helpers/jest/jest-preset.js b/scripts/bundles/helpers/jest/jest-preset.js
index 2d958e6026d..35800901632 100644
--- a/scripts/bundles/helpers/jest/jest-preset.js
+++ b/scripts/bundles/helpers/jest/jest-preset.js
@@ -13,10 +13,10 @@ module.exports = {
     '^@stencil/core/cli$': path.join(rootDir, 'cli', 'index.js'),
     '^@stencil/core/compiler$': path.join(rootDir, 'compiler', 'stencil.js'),
     '^@stencil/core/internal$': path.join(internalDir, 'testing', 'index.js'),
-    '^@stencil/core/internal/app-data$': path.join(internalDir, 'app-data', 'index.cjs.js'),
+    '^@stencil/core/internal/app-data$': path.join(internalDir, 'app-data', 'index.cjs'),
     '^@stencil/core/internal/app-globals$': path.join(internalDir, 'app-globals', 'index.js'),
     '^@stencil/core/internal/testing$': path.join(internalDir, 'testing', 'index.js'),
-    '^@stencil/core/mock-doc$': path.join(rootDir, 'mock-doc', 'index.cjs.js'),
+    '^@stencil/core/mock-doc$': path.join(rootDir, 'mock-doc', 'index.cjs'),
     '^@stencil/core/sys$': path.join(rootDir, 'sys', 'node', 'index.js'),
     '^@stencil/core/testing$': path.join(testingDir, 'index.js'),
     '^@stencil/core$': path.join(internalDir, 'testing', 'index.js'),
diff --git a/scripts/bundles/interal-app-data.ts b/scripts/bundles/internal-app-data.ts
similarity index 95%
rename from scripts/bundles/interal-app-data.ts
rename to scripts/bundles/internal-app-data.ts
index 19ed8b5f3c0..66955528c5b 100644
--- a/scripts/bundles/interal-app-data.ts
+++ b/scripts/bundles/internal-app-data.ts
@@ -17,7 +17,7 @@ export async function internalAppData(opts: BuildOptions) {
   writePkgJson(opts, outputInternalAppDataDir, {
     name: '@stencil/core/internal/app-data',
     description: 'Used for default app data and build conditionals within builds.',
-    main: 'index.cjs.js',
+    main: 'index.cjs',
     module: 'index.js',
     types: 'index.d.ts',
   });
@@ -36,7 +36,7 @@ export async function internalAppData(opts: BuildOptions) {
       {
         format: 'cjs',
         dir: outputInternalAppDataDir,
-        entryFileNames: '[name].cjs.js',
+        entryFileNames: '[name].cjs',
         esModule: false,
         preferConst: true,
       },
diff --git a/scripts/bundles/internal.ts b/scripts/bundles/internal.ts
index 7bbc0f143d9..707cf89d587 100644
--- a/scripts/bundles/internal.ts
+++ b/scripts/bundles/internal.ts
@@ -1,7 +1,7 @@
 import fs from 'fs-extra';
 import type { BuildOptions } from '../utils/options';
 import { cleanDts } from '../utils/bundle-dts';
-import { internalAppData } from './interal-app-data';
+import { internalAppData } from './internal-app-data';
 import { internalClient } from './internal-platform-client';
 import { internalHydrate } from './internal-platform-hydrate';
 import { internalTesting } from './internal-platform-testing';
diff --git a/scripts/bundles/testing.ts b/scripts/bundles/testing.ts
index 768569cd456..fb2312efc92 100644
--- a/scripts/bundles/testing.ts
+++ b/scripts/bundles/testing.ts
@@ -78,7 +78,7 @@ export async function testing(opts: BuildOptions) {
       lazyRequirePlugin(opts, ['@app-data'], '@stencil/core/internal/app-data'),
       lazyRequirePlugin(opts, ['@platform', '@stencil/core/internal/testing'], '@stencil/core/internal/testing'),
       lazyRequirePlugin(opts, ['@stencil/core/dev-server'], '../dev-server/index.js'),
-      lazyRequirePlugin(opts, ['@stencil/core/mock-doc'], '../mock-doc/index.cjs.js'),
+      lazyRequirePlugin(opts, ['@stencil/core/mock-doc'], '../mock-doc/index.cjs'),
       {
         name: 'testingImportResolverPlugin',
         resolveId(importee) {