react-native-randombytes-nodeify

randombytes nodeify for react-native (metro bundler), react-native-randombytes wrapper

randombytes for dependencies on react-native runtime

What is this

1// many packages use "randombytes"
2var randomBytes = require('randombytes');
3
4// and "react-native-randombytes" package support like this and similar API
5import { randomBytes } from 'react-native-randombytes'
6// or
7var { randomBytes } = require('react-native-randombytes');
8
9// install this package and set your project
10// now, you can use randombytes same node syntax
11var randomBytes = require('randombytes');

Installation

1. add package

npm install react-native-randombytes-nodeify
// or
yarn add react-native-randombytes-nodeify

2. install peerDependencies and babel-plugin

npm install react-native-randombytes
npm install --save-dev babel-plugin-module-resolver
// or
yarn add react-native-randombytes
yarn add --dev babel-plugin-module-resolver

3. add a babel plugin to babel.config.js

1module.exports = {
2  presets: ['module:metro-react-native-babel-preset'],
3  plugins: [
4    [
5      require.resolve('babel-plugin-module-resolver'),
6      {
7        alias: {
8          randombytes: './node_modules/react-native-randombytes-nodeify',
9        },
10      },
11    ],
12  ],
13};

Etc.

• If you try importing 'randombytes' before installing this package, you should clear react-native cache

npm start -- --reset-cache

Usage

1// linking steps
2// "randombytes" => "react-native-randombytes-nodeify" => "react-native-randombytes"'s randomBytes
3var randomBytes = require('randombytes');
4
5// get 4 random bytes
6const rand = randomBytes(4)
7
8// asynchronous API
9randomBytes(4, (err, bytes) => {
10  // bytes is a Buffer object(4 random bytes)
11  console.log(bytes.toString('hex'))
12})

And We can use node packages!