firmata/firmata.js

browser-side require() the node way

takes json-cov output into stdin and POSTs to coveralls.io

The JavaScript Task Runner

A grunt task for running server side mocha tests

Lerna is a fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages from the same repository

simple, flexible, fun test framework

the Istanbul command line interface

test framework agnostic BDD-style assertions

JavaScript test spies, stubs and mocks.

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.

jsbeautifier.org for grunt