fast-check

Derive property based testing fast-check into a fuzzer for REST APIs

Fable bindings for jest and friends for delightful Fable testing.

Harden your Foundry module or system code with end-to-end UI tests directly within Foundry. Powered by Mocha and Chai.

Property based testing (QuickCheck) examples based on fast-check

Generate fast-check arbitraries from Valibot schemas for property-based testing

Generate Fastcheck arbitraries from GraphQL Schema

Discover laws in your code like with QuickSpec

effect-ts Law Testing

PBT workshop in js

fast-check over @testjs/testing

Breaking 'return true to win' using Property based testing fast-check

Property-based testing for UI components. Generate random user interaction sequences and verify your components maintain their invariants.

Monorepo containing numerical codecs and arbitraries for native JavaScript number types

Set of tools and helpers to help JSVerify users to migrate to fast-check

🐒 A TypeSpec emitter for fast-check arbitraries.

property-based testing patterns examples

Testing repo for contract tests in Typescript

fp-ts but QuickCheck (partial port)

Real-time crypto market screener with Binance order book liquidity heatmap, multi-exchange (Binance/Bybit/OKX/Coinbase/Kraken) screener, 0–100 hotness score, 10 signal detectors, and alerts. Next.js 14 + Fastify 5 + TypeScript. Public APIs only — no keys.

Mocha-style wrapper for fast-check property testing