npm command

# To interactively create a 'package.json' file:
npm init

# To download all the packages listed as dependencies in package.json:
npm install

# To download a specific version of a package and add it to the list of dependencies in 'package.json':
npm install <package_name>@<version>

# To download the latest version of a package and add it to the list of dev dependencies in 'package.json':
npm install <package_name> --save-dev

# To download the latest version of a package and install it globally:
npm install --global <package_name>

# To uninstall a package and remove it from the list of dependencies in 'package.json':
npm uninstall <package_name>

# To print a tree of locally installed dependencies:
npm list

# To list top-level globally installed packages:
npm list --global --depth=<0>

# ---

# To check a package for outdated dependencies:
npm outdated

# To update all outdated local packages:
npm update

# To update a package to the latest version:
npm install <package_name>@latest --save

# To update a dev package to the latest version:
npm install <package_name>@latest --save-dev

# To update all global packages by doing:
npm update -g

# To check for packages not declared in package.json:
npm prune

# To lock down your dependencies versions:
npm shrinkwrap

# To search for packages:
npm search <package_name>

# To see where modules go:
npm root

# To see where executables go:
npm bin

# To list installed packages:
npm ls