多用几遍，就记住了~

作用 npm yarn
安装 npm install(i) yarn
卸载 npm uninstall(un) yarn remove
全局安装 npm install xxx –-global(-g) yarn global add xxx
安装包 npm install xxx –save(-S) yarn add xxx
开发模式安装包 npm install xxx –save-dev(-D) yarn add xxx –dev(-D)
更新 npm update –save yarn upgrade
全局更新 npm update –global yarn global upgrade
卸载 npm uninstall [–save/–save-dev] yarn remove xx
清除缓存 npm cache clean yarn cache clean
重装 rm -rf node_modules && npm install yarn upgrade
查看全局安装包 npm list -g —depth=0 yarn global list —depth=0