Jest
Catch changes in JavaScript logic with assertions, mocks and snapshot tests.
What’s included for free?
Install and run the open-source testing framework without a provider test-count allowance. CI hosting and your project dependencies have separate costs and terms.
Provider information ↗Checked 2026-10-13
Before you use it
MIT licence; preserve the copyright and licence notice when distributing the software. Third-party dependencies and hosted services have their own terms.
Provider terms can change. Check current pricing and usage rights before starting a project.