Testing

Code quality tools

• xo - JavaScript linter with great defaults
• prettier - Prettier is an opinionated code formatter.
• ESLint - A fully pluggable tool for identifying and reporting on patterns in JavaScript.

Testing Frameworks

• ava - Futuristic JavaScript test runner
• jest - Delightful JavaScript Testing Framework with a focus on simplicity
• mocha - Simple, flexible, fun javascript test framework for node.js & the browser.
• jasmine - DOM-less simple JavaScript testing framework.
• Playwright - Playwright is a framework for Web Testing and Automation

Test runners

• puppeteer - Headless Chrome Node.js API by official Google Chrome team.
• cypress - Fast, easy and reliable testing for anything that runs in a browser.

Libraries

• Polly.js - Record, replay, and stub HTTP interactions.