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npm powers modern front-end development more than any other tool: It provides all modules you need to set up your Node.js based environment. If you use a build system like Gulp or Grunt you are very likely to install the modules you need via npm. It all starts with specifying a package.json file and defining the direct dependencies your project has. With running $ npm install the package management system downloads these dependencies for you and installs them in the way you need them. But npm can do more than just installing dependencies. The one thing that I want to talk about are scripts.