Explanation of the YARN & NPM command - - Collin‘s first article_collin外部命令安装

Authorship: Collin.Yang 

Note to readers: Notes with a green background

acquaintance yarn 

### yarn common commands: 

Install yarn: NPM install -g yarn

View the version number: yarn --version

Create a folder: md yarn

Go to the folder: cd yarn

Project initialization: (Generate package.json file)

Yarn configuration items:

Yarn install // Install all packages in package.json and store all dependencies to yarn.lock

Yarn Install -- Flat // Installs a single version of a package

Yarn install ---force // Forcibly downloads all packages again

Yarn install --production // Install only the package in Dependencies

Yarn install --no-lockfile // Do not read or generate yarn.lock

Yarn install --pure-lockfiles // Yarn.lock is not generated

Add a package:

Yarn add --dev / -d // Add to devDependencies

Yarn add --peer / -p // Add to peerDependencies

Yarn add -- --optional / -o // Add to optionalDependencies

Publish a package：

yarn publish

To remove a bag:

yarn remove <packageName> // Package.json and yarn.lock are automatically updated when a package is removed

The attached pictures are interpreted in Chinese for YARN：

安装yarn：  npm install -g yarn
查看版本号； yarn --version 
创建文件夹； md yarn 
进入文件夹： cd yarn
项目初始化；(生成package.json文件)
yarn的配置项：
    yarn install //安装package.json里所有包，并将所有依赖项存入yarn.lock
    yarn install ---flat  安装一个包的单一版本
    yarn install ---force 强制重新下载所有包
    yarn install ---production //只安装dependencies里的包
    yarn install ---no-lockfile //不读取或生成yarn.lock
    yarn install ---pure-lockfiles //不生成yarn.lock
添加包：
    yarn add ---dev /-D  //添加到devDependencies
    yarn add ---peer /-P  //添加到peerDependencies
    yarn add ---optional /-O  //添加到optionalDependencies
发布包；
    yarn publish 
移出一个包：
    yarn remove <packageName> //移出一个包，会自动更新package.json和yarn.lock

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npm common commands

### NPM common command

NPM init // Create packge.json

NPM install package name // download | installation package

NPM install -s // Download the package and save it to the run dependency

NPM install -d // Download the package and save it to the development dependency

NPM install Install package name@version // Download a fixed version of the package

NPM view Package name versions // Lists all package versions

NPM install // Installs all packages recorded in package.json at once

The attached pictures are interpreted in Chinese for NPM

npm init  //创建packge.json
npm install 包名  //下载|安装包
npm install 包名 -S  //下载包并保存到运行依赖
npm install 包名 -D  //下载包并保存到开发依赖
npm install 包名@版本号  //下载固定版本的包
npm view 包名 versions  //列举出包的所有版本信息
npm install   //一次性安装所有package.json中记录的所有包