coreyphillips/rn-bitcoinjs-lib-4.0.2_Setup.md

## rn-bitcoinjs-lib-4.0.2_Setup.md

      
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              rn-bitcoinjs-lib-4.0.2_Setup.md
            
          
    Newer version available. Please see 4.0.3

How To Add bitcoinjs-lib Version 4.0.2 To A React Native Project
Add/Link the following dependencies:

yarn add bitcoinjs-lib@4.0.2 react-native-randombytes buffer-reverse buffer@5
yarn add --dev rn-nodeify
react-native link react-native-randombytes
Add the following postinstall to your script in package.json: "postinstall": "rn-nodeify --install buffer,stream,assert,events,crypto,vm --hack && cd node_modules/bs58 && yarn add base-x@3.0.4 && cd ../../"

Install any remaining dependencies and run postinstall.
NOTE: (If you receive an error about "shim.js" not existing just run yarn install again):


yarn install


Add the following to shim.js:


if (typeof Buffer.prototype.reverse === 'undefined') {
  var bufferReverse = require('buffer-reverse');

  Buffer.prototype.reverse = function () {
    return bufferReverse(this);
  };
}


Uncomment require('crypto') at the bottom of "shim.js". Or add require('crypto') to the bottom of "shim.js" if it doesn't exist.

Resolve Item In ecpair.js

Open ecpair.js in .../bitcoinjs-lib/src/ecpair.js and replace const randomBytes = require('randombytes') with  the following:
import { randomBytes } from 'react-native-randombytes'

To test if everything is working as expected place the following in render:
import "./shim";
const bitcoin = require("bitcoinjs-lib");
const keyPair = bitcoin.ECPair.makeRandom();
const { address } = bitcoin.payments.p2pkh({ pubkey: keyPair.publicKey });
console.log(address);