Webpack is a module bundler, its main purpose is to bundle all the dependent files into a single .js file which helps optimize the page load. Apart from bundling webpack can also be used as a task runner by configuring a sequence of tasks in the build process like cleanup target folder, bundle files, copy files etc. Webpack by itself is a big topic, in this post we shall see the minimal configuration required in webpack to bundle and load a React Application.

Webpack is configuration driver, remember we created a file in the webpack.config.js previous Hello World post, this is the webpack configuration file. The most minimal webpack configuration includes and entry (input) and an output.