I combine deep React and TypeScript expertise with design judgment, business context, and end-to-end ownership. My work spans AI products, complex interaction systems, design systems, and full-stack product development.
It's not always obvious which tests we should be writing for our React components. One way to solve this problem is to use a combination of Input Space Partitioning and Whitebox testing to guide us during the process.
It's not always obvious how to decompose a React component. This article explains a guideline you can use to validate a decomposition.
Learn about: testing, relying on TypeScript to improve correctness, and modeling data-structures while building a multilevel-list React component. In this part, we'll focus on modeling the underlying data structure to support the multilevel-list component.
When we're uncertain of what tests to write for an application, we might have more significant problems than we're aware. Here's what to do about it.
“João is one of the most thoughtful and reliable people I have worked with.”