npm command line install development code example
Example 1: npm dev dependencies
# install as devDependency
npm install --save-dev
# install as normal dependency
npm install --save
# install all devDependencies listed in package.json
npm install --only=dev
# install all normal dependencies listed in package.json
npm install --only=prod
# or if NODE_ENV is set to production
npm install
Example 2: install node modules
// Install as a dependency
npm install --save packageName
// OR
npm install --save package1 package2
// OR
npm install --save package@version
// OR
npm i -s packageName
// Install as a dev-dependency
npm install --save-dev package@version
// OR
npm i -D packageName
//Install globally
npm install --global packageName
//OR
npm i -g packageName
// You might need SU access on macos/linux to install globally