yarn add node modules code example

Example 1: add dev dependency yarn

yarn add -D package
//or
yarn add --dev package

Example 2: yarn add install all packages in package,json

yarn install

Example 3: install dev dependency yarn

yarn add nameOfPackage --dev

Example 4: yarn save dev

yarn add  [--dev/-D]

Example 5: yarn add --save-exact

yarn add  [--exact/-E]