error: Error: Unable to resolve module fs react native code example

Example: could not resolve module fs react native

npm install rn-nodeify

Then in package.json file, add the following line in "scripts" to specify which modules you want to include in your RN project. For example, I used fs, crypto and https, and the line goes

"postinstall": "node_modules/.bin/rn-nodeify --install crypto,fs,https --hack"