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shim.js
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shim.js
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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 (var 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__
process.env['NODE_ENV'] = isDev ? 'development' : 'production'
if (typeof localStorage !== 'undefined') {
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')
if (require('./package.json').dependencies['react-native-crypto']) {
const algos = require('browserify-sign/algos')
if (!algos.sha256) {
algos.sha256 = {
"sign": "ecdsa",
"hash": "sha256",
"id": new Buffer("")
}
}
if (typeof window === 'object') {
const wCrypto = window.crypto = window.crypto || {}
wCrypto.getRandomValues = wCrypto.getRandomValues || getRandomValues
}
const crypto = require('crypto')
const randomBytes = crypto.randomBytes
crypto.randomBytes = function (size, cb) {
if (cb) return randomBytes.apply(crypto, arguments)
const arr = new Buffer(size)
getRandomValues(arr)
return arr
}
crypto.getRandomValues = crypto.getRandomValues || getRandomValues
function getRandomValues (arr) {
// console.warn('WARNING: generating insecure psuedorandom number')
for (var i = 0; i < arr.length; i++) {
arr[i] = Math.random() * 256 | 0
}
return arr
}
}