shim.js

/* eslint-disable import/no-nodejs-modules */
import { decode, encode } from 'base-64';

if (!global.btoa) {
  global.btoa = encode;
}

if (!global.atob) {
  global.atob = decode;
}

// Fix for https://github.com/facebook/react-native/issues/5667
if (typeof global.self === 'undefined') {
  global.self = global;
}

if (typeof __dirname === 'undefined') global.__dirname = '/';
if (typeof __filename === 'undefined') global.__filename = '';
if (typeof process === 'undefined') {
  global.process = require('process');
} else {
  const bProcess = require('process');
  for (const p in bProcess) {
    if (!(p in process)) {
      process[p] = bProcess[p];
    }
  }
}

process.browser = false;
if (typeof Buffer === 'undefined') global.Buffer = require('buffer').Buffer;

// global.location = global.location || { port: 80 }
const isDev = typeof __DEV__ === 'boolean' && __DEV__;
Object.assign(process.env, { NODE_ENV: isDev ? 'development' : 'production' });

if (typeof localStorage !== 'undefined') {
  // eslint-disable-next-line no-undef
  localStorage.debug = isDev ? '*' : '';
}

// If using the crypto shim, uncomment the following line to ensure
// crypto is loaded first, so it can populate global.crypto
// require('crypto')