BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.

Extends Chai with assertions about promises.

HTTP Response assertions for the Chai Assertion Library.

Inspect utility for Node.js and browsers

The chaijs.com website source code. Contributions welcome.

Error constructor for test and validation frameworks that implements standardized AssertionError specification.

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

Error comparison and information related utility for node and the browser

Object value retrieval given a string path

Improved deep equality testing for Node.js and the browser.