yarn 的常用命令

初始化新项目
yarn init
添加依赖包
yarn add [package]
yarn add [package]@[version]
yarn add [package]@[tag]
将依赖项添加到不同依赖项类别
分别添加到 devDependencies、peerDependencies 和 optionalDependencies：
yarn add [package] --dev
yarn add [package] --peer
yarn add [package] --optional
升级依赖包

yarn upgrade [package]
yarn upgrade [package]@[version]
yarn upgrade [package]@[tag]
移除依赖包

yarn remove [package]
安装项目的全部依赖
yarn 或者 yarn install