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

Extends Chai with assertions about promises.

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

HTTP Response assertions for the Chai Assertion Library.

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

Inspect utility for Node.js and browsers

Error comparison and information related utility for node and the browser

Object value retrieval given a string path

The chaijs.com website source code. Contributions welcome.

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