Jest

JavaScript boilerplate is easy enough to come by, but there’s a bit more to starting AWS SAM projects with TypeScript. Here’s how to create an AWS SAM TypeScript project from scratch with Jest support.

Any piece of code that has no tests is said to be legacy code according to Michael Feathers. Therefore, one of the best ways to avoid creating legacy code is using test-driven development (TDD).

While there are many tools available to create unit tests in JavaScript, in this post, we will use Jest and Enzyme to create a React.js component with basic functionality using TDD.