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.
This library currently implements small part of Facebook BigPipe so far, but the advantage is to efficiently insert/replace content and work with the DOM. It is also possible to easily call JavaScript modules from PHP.