Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
Ignore assets from compilation. Useful when you use non-js files as entry points with extract-text-webpack-plugin, and don't need the resulting empty js files.