__DEV__ support

[littlehome-eugene]

The problem
If you want to share code between RN and RN-web, __DEV__ should also be provided in the both platform.

However I can't add DEV using const __DEV__ = process.env.NODE_ENV !== 'production'; new webpack.DefinePlugin({__DEV__})

I can set window.__DEV__ fine, but RN code uses __DEV__

I've also tried adding module:metro-react-native-babel-preset

Expected behavior

Environment (include versions). Did this work in previous versions?

• React Native for Web (version): 0.12.2
• React (version): 16.12.0
• Browser: chrome

[necolas]

That's something a bundler like webpack has to do for you

[KingAmo]

could anyone anyone help me with how we could get __DEV__ in react-native-web with webpack ?
i really do not familiar with webpack

[KingAmo]

see https://stackoverflow.com/questions/61115645/react-native-web-dev-not-defined/62297869#62297869

[LuoTuxiu]

  plugins: [
    new webpack.ProvidePlugin({
      __DEV__: process.env.NODE_ENV === 'production' || true,
    }),
  ],

when I add DEV to webpack plugins, it goes other error:

ERROR in specifier.charCodeAt is not a function

ERROR in specifier.charCodeAt is not a function

ERROR in specifier.charCodeAt is not a function

anybody could help?