set npm or yarn registry

set npm or yarn registry

check yarn’s registry config

$ yarn config get registry

set yarn’s registry config

$ yarn config set registry 'https://registry.npm.taobao.org'

set npm same as yarn,just replace yarn with npm.

yarn commands

1. 开始一个新工程

yarn init # yarn

npm init # npm 

1. 添加一个依赖

1).开发环境

yarn add [email protected]              # yarn 

npm install [email protected] --save    # npm

2).生产环境

yarn add webpack --dev              # yarn 

npm install webpack --save-dev      # npm

3).全局

yarn global add webpack # yarn

npm install webpack -g # npm

1. 更新一个依赖
   ```
   yarn upgrade 用于更新包到基于规范范围的最新版本

yarn upgrade # 升级所有依赖项，不记录在 package.json 中

npm update # npm

yarn upgrade webpack # 升级指定包

npm update webpack –save-dev # npm

yarn upgrade –latest # 忽略版本规则，升级到最新版本，并且更新 package.json

4. 移除一个依赖

yarn remove webpack # yarn

npm uninstall webpack –save # npm

5. 安装 package.json 中的所有文件

yarn 或者 yarn install # yarn

npm install # npm

```