For RN there is not a Crypto library.

So we should use expo-crypto and make an alias to crypto

RN Config

Install Bable Module Resolver

Update babel.config.js

module.exports = function (api) { api.cache(true); return { presets: ["babel-preset-expo"], plugins: [ [ "module-resolver", { alias: { crypto: "expo-crypto", }, }, ], ], }; };

So we are telling to RN that the crypto lib is expo-crypto insted of crypto, the fact is expo-crypto has different methods, so we need to verify if is RN or Brower/Node then if is react native call the methods from expo.

There is an issue, navigator.product its depreacted, but other that this config works as expect and all test passed