fast-check

COLLECTIVE

🐛🔨 Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

This is fast-check's page fast-check

Contribute

All ways to contribute

Budget

About

Contribute

Become a financial contributor.

Financial Contributions

Recurring contribution

Backer

Become a backer for $1.00 per month and support us

Starts at

$1 USD / month

Latest activity by

Recurring contribution

Sponsor

Become a sponsor for $100.00 per month and support us

Starts at

$100 USD / month

Latest activity by

Be the first one to contribute!

Custom contribution

Donation

Make a custom one-time or recurring contribution.

Latest activity by

+ 1

Top financial contributors

Individuals

Caleb Jasik

$110 USD since Dec 2022

Guest

$50 USD since Nov 2021

James Wahlin

$20 USD since Oct 2021

Organizations

Defined Networking

$310 USD since Oct 2023

curtidas instagram grátis

$2 USD since Apr 2026

fast-check is all of us

Our contributors 6

Thank you for supporting fast-check.

Nicolas Dubien

Admin

Defined Netwo...

backer

$310 USD

Caleb Jasik

backer

$110 USD

Guest

$50 USD

James Wahlin

$20 USD

curtidas inst...

backer

$2 USD

Budget

Transparent and open finances.

Monthly financial contribution to fast-check (backer)

Credit from Defined Networking to fast-check • May 1, 2026

+$10.00USD

Completed

Contribution #706171

Monthly financial contribution to fast-check (backer)

Credit from curtidas instagram grátis to fast-check • April 21, 2026

+$2.00USD

Completed

Contribution #945850

Monthly financial contribution to fast-check (backer)

Credit from Defined Networking to fast-check • April 1, 2026

+$10.00USD

Completed

Contribution #706171

Today’s balance

$164.64 USD

Total raised

$411.09 USD

Total disbursed

$246.45 USD

Estimated annual budget

$144.00 USD

About

Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

Our team

Nicolas Dubien

Admin