jokit

Jokit is a lightweight, open-source testing library designed for JavaScript and TypeScript projects. It provides a minimal yet expressive API for writing unit and integration tests, along with utilities for mocks, spies, and test lifecycle hooks. Jokit emphasizes a small surface area, fast feedback, and readable test output, making it approachable for small projects and teams.

Features include test suites and describe blocks for organizing tests, support for synchronous and asynchronous tests (via promises or async/await), an expect-style assertion API, and built-in helpers for creating mocks and spies. The library also offers setup and teardown hooks, timeouts, and simple reporting options.

Architecture-wise, Jokit is composed of a core test runner, an assertion library, and a plugin-friendly reporter layer. It is designed to run in Node.js and modern browsers, with adapters that allow the same tests to execute in different environments. The design favors composability, enabling users to swap reporters or extend the assertion set through lightweight plugins.

Usage is straightforward: install Jokit via a package manager, import the API, and write tests using test and describe blocks. For example, a simple test might be: test('sum adds numbers', async () => { const result = 1 + 1; expect(result).toBe(2); });

Jokit competes with other JavaScript testing frameworks by prioritizing simplicity and clear output, and is maintained by an open-source community.

---