The most critical three learnings for testing frontend, from ten years helping lead frontend engineering at Palantir.

A beginner’s guide to debugging React testing library tests, with a code walkthrough of how to use react-testing-library to debug tests.

An article about the error 'cannot read property split of undefined' and various techniques to prevent it.

A how-to guide on how to set up visual regression testing in a web application using Jest and Cypress.

Automated testing is an important aspect of software engineering. In the JavaScript ecosystem, TypeScript provides an extra layer of assurance with types in JavaScript. For testing, Jest has been the …