Airbnb JavaScript Style Guide

The Airbnb JavaScript Style Guide is a widely adopted, opinionated, open-source set of coding conventions and best practices for writing readable, maintainable JavaScript (and React/JSX) code, published under the MIT license and assuming usage of modern tooling such as Babel and ESLint. Whichever testing framework you use, you should be writing tests. Strive to write many small pure functions, and minimize where mutations occur. Be cautious about stubs and mocks - they can make your tests more brittle.