NPM / Yarn 配置镜像、使用方法NPM配置NPM默认registry：https://registry.npmj

NPM 配置

NPM 默认 registry：registry.npmjs.org/

NPM 中文文档：www.npmjs.cn

淘宝 NPM 镜像：npm.taobao.org

CNPM：cnpmjs.org

永久使用

npm config set registry URL　# URL 即为需要设置的镜像站点地址

# 设置配置
npm config set registry https://registry.npm.taobao.org --global # 淘宝镜像

npm config set disturl https://npm.taobao.org/dist --global # Node镜像

# 获取配置
npm config get registry # 返回 https://registry.npm.taobao.org 即设置成功

npm config get disturl # 返回 https://npm.taobao.org/dist 即设置成功

临时使用

npm install [pkg] --registry=https://registry.npm.taobao.org

# 例如: npm install cnpm -g --registry=https://registry.npm.taobao.org

使用 cnpm

npm install cnpm -g

# React Native 官网 搭建开发环境 不建议使用 cnpm

npm 命令缩写

-v: --version

-g: --global

-reg: --registry

-S: --save

-D: --save-dev

yarn 配置

安装 yarn

npm install -g yarn

设置 yarn 镜像源

yarn config set registry https://registry.npm.taobao.org --global
yarn config set disturl https://npm.taobao.org/dist --global

yarn 使用方法

Installing all the dependencies 安装依赖
```
yarn

yarn install
```

Adding a dependency 添加依赖

yarn add [package]
yarn add [package]@[version]
yarn add [package]@[tag]

Adding a dependency to different categories of dependencies 添加依赖到不同依赖项中

yarn add [package] --dev  # dev dependencies
yarn add [package] --peer # peer dependencies

Upgrading a dependency 更新依赖

yarn up [package]
yarn up [package]@[version]
yarn up [package]@[tag]

Removing a dependency 移除依赖
```
yarn remove [package]
```

Upgrading Yarn itself 升级 yarn

yarn set version latest
yarn set version from sources

Accessing the list of commands 访问命令列表
```
yarn help
```
Starting a new project 初始化项目
```
yarn init
```