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.
Ever wanted to interact with the host system when running karma tests? This module allows the tests running in your browser to do things on the server-side, that is, in node. This means you can run API or DB setup code from your tests inside karma.