Series
Get started with Test-Driven Development by building a simple Calculator API in a modern, server-side, framework - Fastify.
In a world where APIs rule the web and JavaScript is the language that reigns across all the stacks, one framework shall rise to challenge the Kingdom of Express. Introduction Fastify, first of its name, is a low overhead (aka. fast) server-side Java...
The beginning is a very good place to start and we begin by setting up our project. You might want to skip this if you're familiar with setting up a project with Jest and Typescript. I have opened a Github pull request that shows all the code changes...
Why a health route? I want to begin with the end in mind. When our API is deployed in a cloud environment, the automated, cloud deployment will need a way to know that our API has started correctly. That is the purpose of the GET /health route. I hav...
Being able to safely refactor code is one of the greatest benefits of writing tests. The goal of refactoring is to improve code design e.g. style, design patterns, performance. Let's take an example from the previous route handler which has already b...
