Discussion on: Good bye ReactNative, hello Ionic.

[Magne]

In short, the iOS setup is mess of xcode project configuration no human should actually read and with custom inline bash scripts running Ruby or node.js scripts setting hidden environment variables and all in all really hard to debug.

It sounds like you were using your own custom setup? I can’t imagine inline bash scripts running Ruby is auto generated by default.

[Philipp Renoth]

From the current RN 0.66.3 there are scripts in the project.pbxproj like

shellScript = "set -e\n\nexport NODE_BINARY=node\n../node_modules/react-native/scripts/react-native-xcode.sh\n";
shellScript = "export RCT_METRO_PORT=\"${RCT_METRO_PORT:=8081}\"\necho \"export RCT_METRO_PORT=${RCT_METRO_PORT}\" > \"${SRCROOT}/../node_modules/react-native/scripts/.packager.env\"\nif [ -z \"${RCT_NO_LAUNCH_PACKAGER+xxx}\" ] ; then\n  if nc -w 5 -z localhost ${RCT_METRO_PORT} ; then\n    if ! curl -s \"http://localhost:${RCT_METRO_PORT}/status\" | grep -q \"packager-status:running\" ; then\n      echo \"Port ${RCT_METRO_PORT} already in use, packager is either not running or not running correctly\"\n      exit 2\n    fi\n  else\n    open \"$SRCROOT/../node_modules/react-native/scripts/launchPackager.command\" || echo \"Can't start packager automatically\"\n  fi\nfi\n";

The ruby script generation seems to come from react-native-config which is not from RN itself, you're right.