Can not build from xcode

[da1z]

I am able to run demo app on emulator by running 'npm run ios' successfully following steps from docs but when I am trying to run demo app on device from xcode I get build error: error The resource ..../react-native-ui-lib/index.js was not found.

Can run demo on emulator from xcode. After running on emulator trying to run on device with Run without building and getting 'No code signature found.'

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[XHMM]

Why this happen:

The reason is in node_modules/react-native/scripts/react-native-xcode.sh:

if [[ "$PLATFORM_NAME" == *simulator ]]; then
  if [[ "$FORCE_BUNDLING" ]]; then
    echo "FORCE_BUNDLING enabled; continuing to bundle."
  else
    # 👇 here
    echo "Skipping bundling in Debug for the Simulator (since the packager bundles for you). Use the FORCE_BUNDLING flag to change this behavior."
    exit 0;
  fi
else
  echo "Bundling for physical device. Use the SKIP_BUNDLING flag to change this behavior."
fi

So in simulator environment, entryfile will be resolved when running app and its name was determined by return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"demo"]; in AppDelegate.mm

Resolution:

Because metro.config.js not support config entry file path, so we need manully set ENTRY_FILE env to solve this:

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.