fast-check
banner
fast-check.dev
fast-check
@fast-check.dev
🎲 Property-based testing for JavaScript and TypeScript compatible with Vitest, Jest and others · Official website at https://fast-check.dev · Made with ♥️ by @nicolas.dubien.me
If you're ok with it, we can have a room for it on fast-check.dev/docs/ecosyst...
🌱 Ecosystem | fast-check
Bring additional capabilities to fast-check by leveraging its rich ecosystem of extensions and plugins
fast-check.dev
September 20, 2025 at 2:04 PM
I'm pretty sure we could easily adapt the code from github.com/CanadaHonk/p... into an arbitrary in fast-check. It would be awesome 😎

As it will not only generate code but also reduce it in case of failure.
github.com
July 17, 2025 at 8:40 PM
May 13, 2025 at 7:04 AM
Not found the time to do so but it would be a great addition in our official documentation
March 23, 2025 at 6:13 PM
Next steps will be about:

· Document it
· Support for --fuzz command line flag
· Deeper integration by supporting: beforeEach, afterEach, timeout...
· Relive discussion around providing it natively from Vitest — github.com/vitest-dev/v...
Built-in support for Property Based Tests (aka Fuzzing) · vitest-dev vitest · Discussion #2212
Hey 👋, I'm Nicolas, core maintainer and main contributor to the project called fast-check. The project does property based testing and reaches 8 million (650k when I opened the ticket) downloads a ...
github.com
March 23, 2025 at 10:24 AM