Extends Chai with assertions for the Sinon.JS mocking framework.

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

Sourcemap support for gulpjs.

Watch, that actually is an endless stream

simple, flexible, fun test framework

JavaScript test spies, stubs and mocks.

Fixes stack traces for files with source maps

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

Serves a webpack app. Updates the browser on changes.

yargs the modern, pirate-themed, successor to optimist.