Malformed expo-modules-core in StackBlitz Node.js

[scottannan]

Describe the bug

Expo's expo-modules-core package consistently installs malformed (index.js is null, build/ directory is missing .js files) in StackBlitz Node.js environments.

Link to the blitz that caused the error

https://stackblitz.com/edit/stackblitz-starters-rsmog8fz?description=Starter%20project%20for%20Node.js,%20a%20JavaScript%20runtime%20built%20on%20Chrome%27s%20V8%20JavaScript%20engine&file=index.js&title=node.new%20Starter

Steps to reproduce

1. Go to https://node.new
2. Open the terminal.
3. Run the commands:

npm install expo@~52.0.0 expo-router@latest [email protected] [email protected] [email protected] react-native-web@~0.19.6
npx expo init --no-install # Choose "blank"
npm install
echo "module.exports = function(api) { api.cache(true); return { presets: ['babel-preset-expo'], }; };" > babel.config.js
echo "const { getDefaultConfig } = require('@expo/metro-config'); const config = getDefaultConfig(__dirname, { isCSSEnabled: true, }); module.exports = config;" > metro.config.js
head -n 10 node_modules/expo-modules-core/index.js
ls node_modules/expo-modules-core/build/

The output is incorrect:
module.exports = null;
& within the file, the js files have not been compiled:
EventEmitter.d.ts SharedObject.d.ts.map
EventEmitter.d.ts.map SharedRef.d.ts
LegacyEventEmitter.d.ts SharedRef.d.ts.map
LegacyEventEmitter.d.ts.map TypedArrays.types.d.ts
NativeModule.d.ts TypedArrays.types.d.ts.map
NativeModule.d.ts.map ensureNativeModulesAreInstalled.d.ts
NativeModulesProxy.d.ts ensureNativeModulesAreInstalled.d.ts.map
NativeModulesProxy.d.ts.map environment/
NativeModulesProxy.native.d.ts errors/
NativeModulesProxy.native.d.ts.map hooks/
NativeModulesProxy.types.d.ts index.d.ts
NativeModulesProxy.types.d.ts.map index.d.ts.map
NativeViewManagerAdapter.d.ts registerWebModule.d.ts
NativeViewManagerAdapter.d.ts.map registerWebModule.d.ts.map
NativeViewManagerAdapter.native.d.ts reload.d.ts
NativeViewManagerAdapter.native.d.ts.map reload.d.ts.map
PermissionsHook.d.ts requireNativeModule.d.ts
PermissionsHook.d.ts.map requireNativeModule.d.ts.map
PermissionsInterface.d.ts requireNativeModule.web.d.ts
PermissionsInterface.d.ts.map requireNativeModule.web.d.ts.map
Platform.d.ts sweet/
Platform.d.ts.map ts-declarations/
Refs.d.ts uuid/
Refs.d.ts.map web/
SharedObject.d.ts

This is throwing the TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" error.

Expected behavior

The expo modules should have compiled into js files.

Parity with Local

• I have run the project in my local machine and I could not reproduce the issue.

Screenshots

No response

Platform

Browser name  = Chrome
Full version  = 136.0.0.0
Major version = 136
navigator.appName = Netscape
navigator.userAgent = Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
performance.memory = {
  "totalJSHeapSize": 112169801,
  "usedJSHeapSize": 110313605,
  "jsHeapSizeLimit": 4294705152
}
Hash = 55edb8f4

Additional context

No response