Unhandled error in Webpack Compiler when doing `rpm run ios` about repack

[jfgaudreault-p]

I am also getting the same error message issue when trying to run the host app of the repack-examples
/module-federation project.

I am on linux and running the Android app, and the Bundling inside the app goes up to 98% then I get this error.

~/repack-examples/module-federation$ yarn start:host
ℹ [21:12:55.796Z][DevServer] Server listening at http://127.0.0.1:8081 
ℹ [21:13:06.816Z][DevServer] Hermes device connected { deviceId: 0 } 
ℹ [21:13:06.853Z][DevServer] GET 200 /status request completed { responseTime: 2.2725499998778105 } 
ℹ [21:13:07.005Z][WebpackCompilerWorker] {
  bundleFilename: '',
  context: '/home/user/repack-examples/module-federation/host',
  reactNativePath: '/home/user/repack-examples/module-federation/host/node_modules/react-native',
  mode: 'development',
  platform: 'android',
  devServer: { port: 8081, host: '', https: undefined, hmr: true }
} 
ℹ [21:13:07.208Z][DevServer] Successfully run: /home/user/Android/Sdk/platform-tools/adb reverse tcp:8081 tcp:8081 
⇢ [21:13:07.200Z][LoggerPlugin] Compiling android: 3% setup (watch run) 
⇢ [21:13:08.413Z][LoggerPlugin] Compiling android: 28% building (3/6 entries 100/300 dependencies 9/71 modules) 
⇢ [21:13:10.643Z][LoggerPlugin] Compiling android: 46% building (4/6 entries 1197/1265 dependencies 94/335 modules) 
⇢ [21:13:13.763Z][LoggerPlugin] Compiling android: 46% building (4/6 entries 1900/1989 dependencies 273/425 modules) 
⇢ [21:13:15.444Z][LoggerPlugin] Compiling android: 62% building (24/25 entries 2501/2502 dependencies 537/538 modules) 
/home/user/repack-examples/module-federation/host/node_modules/metro-hermes-compiler/src/emhermesc.js:77
          throw ex;
          ^

Error [ERR_UNHANDLED_ERROR]: Unhandled error. ({})
    at Compiler.emit (node:events:508:17)
    at Worker.<anonymous> (/home/user/repack-examples/module-federation/host/node_modules/@callstack/repack/dist/webpack/Compiler.js:110:14)
    at Worker.emit (node:events:519:28)
    at MessagePort.<anonymous> (node:internal/worker:263:53)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:822:20)
    at exports.emitMessage (node:internal/per_context/messageport:23:28) {
  code: 'ERR_UNHANDLED_ERROR',
  context: {}
}

Node.js v21.6.1

I've very new to react-native, so just trying to get some pointers on where to go next and how to troubleshoot this.

EDIT: Switching to node 20.11.0 seems to have fixed this problem.

[jbroma]

hi @thomasreiser

I will not be able to determine the cause of this without a reproduction repository. As switching to newer node version helped with similar issue, you might try doing that. In case you want to provide a reproduction repository, please also provide what node version you were using, thanks!

Since this issue is 2 months old I'll close it for now, but will reopen when reproduction repository is provided.