npm	yarn
npm init	yarn init
npm install	yarn install
(N/A)	yarn install --flat
(N/A)	yarn install --har
(N/A)	yarn install --no-lockfile
(N/A)	yarn install --pure-lockfile
npm install [package]	(N/A)
npm install --save [package]	yarn add [package]
npm install --save-dev [package]	yarn add [package] [--dev/-D]
(N/A)	yarn add [package] [--peer/-P]
npm install --save-optional [package]	yarn add [package] [--optional/-O]
npm install --save-exact [package]	yarn add [package] [--exact/-E]
(N/A)	yarn add [package] [--tilde/-T]
npm install --global [package]	yarn global add [package]
npm rebuild	yarn install --force
npm uninstall [package]	(N/A)
npm uninstall --save [package]	yarn remove [package]
npm uninstall --save-dev [package]	yarn remove [package]
npm uninstall --save-optional [package]	yarn remove [package]
npm cache clean	yarn cache clean
rm -rf node_modules && npm install	yarn upgrade

yarn 的安装：

1.推荐

brew install yarn

2.不推荐

npm install -g yarn

初始化项目

npm:

npm init

yarn:

yarn init

从 package.json 安装依赖

npm:

npm install

yarn:

yarn

安装指定包到依赖或者开发依赖

npm:

npm install --save [package]
npm install --save-dev [package]

yarn:

yarn add [package]
yarn add [package] [--dev/-D]

安装包到全局

npm:

npm install --global [package]

yarn:

yarn global add [package]

安装指定版本的包

npm:

npm install [package]@[version]

yarn:

yarn add [package]@[version]

重新下载所有包

npm:

npm rebuild

yarn:

yarn install --force

卸载包

npm:

npm uninstall [package]
npm uninstall --save [package]
npm uninstall --save-dev [package]

yarn:

yarn remove [package]

升级包

npm:

rm -rf node_modules && npm install

yarn:

yarn upgrade