install package as dev dependency npm code example

Example 1: npm dev dependencies

# install as devDependency
npm install <package-name> --save-dev

# install as normal dependency
npm install <package-name> --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: how to install as dev dependency

npm install <package-name> --save-dev

Example 3: npm install package as developer dependency

npm install --save-dev package
# example:
npm install --save-dev nodemon

Example 4: npm install dev dependencies

npm install <package-name> --save-dev

Example 5: npm install and add to dependancies

npm i packageName -save

Example 6: 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