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.
Transform inline styles defined in JavaScript modules into static CSS code and class names so they become available to, e.g. the `className` prop of React elements.