fast-check

Property-based testing framework for JavaScript and TypeScript

About fast-check

A property-based testing framework for JavaScript and TypeScript that generates random but controlled inputs, shrinks failures and integrates with Jest and other runners to uncover edge cases. Because the code is openly available, it can be audited, extended and run on private infrastructure, which makes it attractive to teams with privacy or compliance needs. It is commonly adopted through containers or packages, evaluated against commercial alternatives and kept because it solves a focused problem reliably at scale.

fast-check key facts

Category: Developer Tools
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: property testing, javascript, typescript, testing
Official site: fast-check.dev

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 738 tools. Alongside fast-check, it includes jqwik, AFLplusplus, libFuzzer, OSS-Fuzz.

FreeDeveloper Toolsproperty-testingjavascripttypescripttesting

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: jqwik — Property-based testing engine for JUnit on the JVM; AFLplusplus — Community fork of American Fuzzy Lop fuzzer; libFuzzer — In-process coverage-guided fuzzing engine from LLVM.