Install package node_modules and add into package.json as dependency.

  > npm i package-name

Install package node_modules and add into package.json as developer dependency

  > npm i --save-dev package-name
  

Install package in particular version

  > npm i --save-dev package-name@^3.2.1
  

Uninstall package

  > npm un package-name
  

Show version of installed package

  > npm ls package-name
  

For semantic versionning see npm documentation

For run project local scripts from node_modules dir, use npx e.g.

Runs webpack from project local node_modules for building the project

 > npx webpack 

Runs jest from project local node_modules for running test suite

 > npx jest