I have found myself in the following scenario many times throughout my career. Everyone is ready to get the project started. You know what you are going to be working on, and as the frontend developer, you get started right away. You get to the point that you are ready to test your code to see how the API calls work. There’s one major thing in your way, though. The APIs aren’t done yet.

You could just create some static JSON files and read them in, but that doesn’t really test out calling an API. That’s where JSON Server swoops in to save the day. In this post, I’ll walk through how to use JSON Server. We’ll set up our environment, serve a simple JSON file, and generate mock data.