js res

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• cross-env 跨平台设置和使用环境变量

设置

{
  "scripts": {
    "build": "cross-env NODE_ENV=production webpack --config build/webpack.config.js"
  }
}

使用

const NODE_ENV = process.env.NODE_ENV;
if(NODE_ENV==='production'){
}else{
}

参考：
https://www.jianshu.com/p/696bd579f9ec
https://blog.csdn.net/qq_26927285/article/details/78105510
https://github.com/kentcdodds/cross-env

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• decimal.js 金额计算

A Decimal is immutable in the sense that it is not changed by its methods.

0.3 - 0.1                     // 0.19999999999999998
x = new Decimal(0.3)
x.minus(0.1)                  // '0.2'
x                             // '0.3'

参考：
https://github.com/MikeMcl/decimal.js
http://mikemcl.github.io/decimal.js/
JS判断是不是Decimal类型(正则实现) https://www.cnblogs.com/xachary/p/3631178.html

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• crypto

JavaScript library of crypto standards.

加解密

https://github.com/brix/crypto-js

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