JavaScript testing
Testing frameworks, linters, formatters, and automation tools for JavaScript and TypeScript projects.
🧹 Linters & formatters
Section titled “🧹 Linters & formatters”- Oxc — Rust-based JavaScript/TypeScript linter, formatter, and toolchain; extremely fast
- Biome — all-in-one linter, formatter, and import sorter for JS/TS/JSON/CSS; Rust-based Prettier+ESLint replacement
🧪 Testing frameworks
Section titled “🧪 Testing frameworks”- Vitest — Vite-native test framework with Jest-compatible API; fast HMR-powered watch mode
- Jest — widely-used testing framework with built-in assertions, mocking, and code coverage
- Mocha — flexible test framework for Node.js and browser; bring your own assertion library
- AVA — concurrent test runner with simple API and isolated test processes
- Jasmine — batteries-included BDD testing framework; no DOM or external dependencies required
🌐 End-to-end & automation
Section titled “🌐 End-to-end & automation”- Playwright — cross-browser testing and automation for Chromium, Firefox, and WebKit; by Microsoft
- Puppeteer — headless Chrome/Chromium automation via Node.js API; by Google
- Cypress — browser-based E2E testing with time-travel debugging and automatic waiting
- CloakBrowser — stealth Chromium fork that drops into Playwright/Puppeteer with identical APIs; 32 C++ source-level patches modify fingerprints at compile time plus driver-level CDP leak removal, defeats reCAPTCHA v3, Cloudflare Turnstile, and 30+ detection services; bundles a self-hosted Browser Profile Manager (Multilogin/GoLogin alternative) and integrates with Selenium, browser-use, Crawl4AI, and Claude computer use; wrapper MIT, binary proprietary
📦 Utilities
Section titled “📦 Utilities”- Polly.js — record, replay, and stub HTTP interactions for deterministic tests