Yarn是Facebook发布的一款依赖管理工具，它比npm更快、更高效。

与NPM命令对照

npm install  => yarn installnpm install --save [package] => yarn add [package]npm install --save-dev [package] => yarn add [package] --devnpm install --global [package] => yarn global add [package]npm uninstall --save [package] => yarn remove [package]npm uninstall --save-dev [package] => yarn remove [package]