Detect development environment in react-native.config.js - react-native

Question

I want to access __DEV__ in react-native.config.js so I can manage some native libraries linking in the development & production environments like sample bellow:
const VECTOR_ICONS_FONTS_PATH =
'./node_modules/react-native-vector-icons/Fonts';
const VECTOR_FONTS = ['MaterialCommunityIcons.ttf'];
module.exports = {
assets: ['./src/assets/fonts/nop/nop.ttf'],
dependencies: {
'react-native-vector-icons': {
platforms: {
ios: null,
android: null,
},
assets: VECTOR_FONTS.map((font) => VECTOR_ICONS_FONTS_PATH + '/' + font),
},
'react-native-flipper': {
platforms: {
ios: null,
android: __DEV__ ? undefined : null,
},
},
},
};
But if I do this I get the following error:
$ react-native run-android
error Unrecognized command "run-android".
info Run "react-native --help" to see a list of all available commands.
error Command failed with exit code 1.

Answer 1

What version of Nodejs and NPM are you using?
This can sometimes happen when the project is not initialized properly.
Perhaps try the following:
Update NodeJs/NPM if not LTS
Delete the node_modules directory
Run npm install or yarn install
Run react-native init
Run react-native run-android
(Duplicate of react-native run-android is unrecognized)