Crypto : while trying to resolve module 'crypto' #21491
Description
Environment:
OS: Windows 10
Node: 8.12.0
Yarn: 1.9.4
npm: 3.10.9
Watchman: 4.9.4
Xcode: N/A
Android Studio: Version 3.1.0.0 AI-173.4720617
Packages: (wanted => installed)
react: 16.3.1 => 16.3.1
react-native: 0.55.4 => 0.55.4
Description
i can't solve that error , i have installed crypto , or upgrade it and reinstall it , still the same problem
//this is helpers.js
'use strict'
var jsonSafeStringify = require('json-stringify-safe')
var crypto = require('crypto')
var Buffer = require('safe-buffer').Buffer
var defer = typeof setImmediate === 'undefined'
? process.nextTick
: setImmediate
function paramsHaveRequestBody (params) {
return (
params.body ||
params.requestBodyStream ||
(params.json && typeof params.json !== 'boolean') ||
params.multipart
)
}
function safeStringify (obj, replacer) {
var ret
try {
ret = JSON.stringify(obj, replacer)
} catch (e) {
ret = jsonSafeStringify(obj, replacer)
}
return ret
}
function md5 (str) {
return crypto.createHash('md5').update(str).digest('hex')
}
function isReadStream (rs) {
return rs.readable && rs.path && rs.mode
}
function toBase64 (str) {
return Buffer.from(str || '', 'utf8').toString('base64')
}
function copy (obj) {
var o = {}
Object.keys(obj).forEach(function (i) {
o[i] = obj[i]
})
return o
}
function version () {
var numbers = process.version.replace('v', '').split('.')
return {
major: parseInt(numbers[0], 10),
minor: parseInt(numbers[1], 10),
patch: parseInt(numbers[2], 10)
}
}
exports.paramsHaveRequestBody = paramsHaveRequestBody
exports.safeStringify = safeStringify
exports.md5 = md5
exports.isReadStream = isReadStream
exports.toBase64 = toBase64
exports.copy = copy
exports.version = version
exports.defer = defer