How do I know if my code is running as React Native

Question

I want to be able to export a package for all platforms, but I am using some native bindings with a plain JS fallback. Normally I would notice the difference checking if obj

Answer 1

Here is how to check if code is on web, nodejs, or react-native:

if (typeof document != 'undefined') {
  // I'm on the web!
}
else if (typeof navigator != 'undefined' && navigator.product == 'ReactNative') {
  // I'm in react-native
}
else {
  // I'm in node js
}

Sources:

• What causes node to return 'navigator is not defined'
• Add way to detect react-native (and platform) without require().
• React Native support is broken

Answer 2

crete two files: one called file.web.js, and other file.native.js, and import only the first name segment'./yourdirectories/file'

Answer 3

Not sure if I understood your question properly, but what we've been doing so far to address all the platforms and have React Native overrides was to have:

-- file.js
-- file.android.js
-- file.ios.js

with just a plain

require('./file');

so that based on the env (Node / React Native) a proper file is loaded transparently.