Skip to main content

Node.js

Node.js is JavScript runtime environment. It is built on Chrome's V8 JavaScript engine.

NPM​

NPM is a package manager for Node.js packages. It is the default package manager for the JavaScript runtime environment Node.js. It consists of a command line client, also called npm, and an online database of public and paid-for private packages, called the npm registry.

Commands​

  • Check Node version
node -v
  • Check NPM version
npm -v
  • Initialize your project and create package.json file. Use -y flag to skip questions:
npm init -y
  • Install a package and save it to package.json file:
node install <package-name>

or

node i <package-name>
  • Install a specific version of a package and save it to package.json file:
node install <package-name>@version-no
  • Install a package globally:
node install <package-name> -g
  • Install a adding a package to package.json file as a dev dependency.
npm install -D <package-name>
  • Install all the packages from package.json file.
npm install
  • Install the packages from package-lock.json file without updating the file.
npm ci
  • Uninstall a package
npm uninstall <package-name>
  • Install a package without saving it to package.json file:
npx <package-name>
  • Check version of a package
npm view <package-name> version
  • Update the packages
npm update
  • Update the packages to the latest major version
npm update <package-name> --major
  • Update the packages to the latest minor version
npm update <package-name> --minor
  • Update the packages to the latest version
npm update <package-name> --latest