yarn init   # 初始化一个新项目

# 添加依赖包
yarn add [package]
yarn add [package]@[version]
yarn add [package]@[tag]
yarn global add [package] # 添加全局包

# 将依赖项添加到不同依赖项类别中
# 分别添加到 devDependencies、peerDependencies 和 optionalDependencies 类别中：
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]

yarn remove [package]   # 移除依赖包

yarn    # 安装项目的全部依赖
yarn install    # 安装项目的全部依赖