React is a JavaScript library for building user interfaces.

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

babel module loader for webpack

simple, flexible, fun test framework

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

Spies for the Chai assertion library.

Spectacular Test Runner for JavaScript.

A fast browserify integration for Karma that handles large projects with ease

Chai for Karma

A Karma plugin. Generate code coverage.

A Karma plugin. Launcher for Firefox.

A Karma plugin. Adapter for Mocha testing framework.

Karma plugin that locates and loads existing javascript source map files.