Learn how function closure allows a function to access and remember its lexical scope even when the function is executed outside of its lexical scope.

Understand the composition of a URL

What is a query client and what does it do?

Learn how to write an error handling middleware in Express.js

Learn how to catch errors in Express async/await route handlers

Learn how to handle errors with React error boundary components.

Fixed using the deepmerge package

Code splitting modules with dynamic import

Using calc() in Tailwind CSS