React Native Monorepo project doesn't work on release build - reactjs

Question

I am experimenting Monorepo using yarn workspaces method containing a sample react-native project which is configured and it works fine in debug build. When I created a release build and run the app, it crashes as soon as it opens. I have provided the log and the code below.
Android Studio Logcat:
2022-05-16 23:18:08.466 6620-6644/? E/AndroidRuntime: FATAL EXCEPTION: create_react_context
Process: com.sample.mobile, PID: 6620
java.lang.RuntimeException: Unable to load script. Make sure you're either running Metro (run 'npx react-native start') or that your bundle 'index.android.bundle' is packaged correctly for release.
at com.facebook.react.bridge.CatalystInstanceImpl.jniLoadScriptFromAssets(Native Method)
at com.facebook.react.bridge.CatalystInstanceImpl.loadScriptFromAssets(CatalystInstanceImpl.java:248)
at com.facebook.react.bridge.JSBundleLoader$1.loadScript(JSBundleLoader.java:29)
at com.facebook.react.bridge.CatalystInstanceImpl.runJSBundle(CatalystInstanceImpl.java:277)
at com.facebook.react.ReactInstanceManager.createReactContext(ReactInstanceManager.java:1422)
at com.facebook.react.ReactInstanceManager.access$1200(ReactInstanceManager.java:138)
at com.facebook.react.ReactInstanceManager$5.run(ReactInstanceManager.java:1111)
at java.lang.Thread.run(Thread.java:923)
Monorepo structure:
monorepo
|
|___Common
|
|___Mobile
Monorepo's root package.json:
{
"name": "monorepo",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"license": "UNLICENSED",
"workspaces": {
"packages": [
"packages/*"
],
"nohoist": [
"**/react-native",
"**/react-native/**"
]
},
"references": [
{
"path": "packages/Common"
},
{
"path": "packages/Mobile"
}
],
"private": true
}
Common's root package.json
{
"name": "common",
"version": "1.0.0",
"description": "",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"license": "UNLICENSED",
"devDependencies": {
"#types/react": "^18.0.9",
"#types/react-native": "^0.67.7"
}
}
React Native's package.json:
...
"peerDependencies": {
"common": "0.0.1"
},
...
React Native's metro.config.js
const path = require('path');
module.exports = {
transformer: {
getTransformOptions: async () => ({
transform: {
experimentalImportSupport: false,
inlineRequires: true,
},
}),
},
resolver: {
sourceExts: ['jsx', 'js', 'ts', 'tsx', 'mjs'],
extraNodeModules: new Proxy(
{},
{
get: (target, name) => {
return path.join(__dirname, `node_modules/${name}`);
},
},
),
},
watchFolders: [
path.resolve(__dirname),
path.resolve(__dirname.replace('Mobile', 'Common'))
],
};
Any Suggestions?

Answer 1

I figured out that the issue was not on the monorepo setup but React Native itself. I am using the latest version of React Native (0.68.2) which was causing this issue. I verified this my creating a simple fresh React Native Project in which this same issue occurs. There are also issues open in the React Native repo itself.