Firebase & React Native: Xero API OAuth2 Integration (Solved!)

Firebase & React Native: Xero API OAuth2 Integration (Solved!)

H ey everyone! If you've been wrestling with integrating the Xero API OAuth2 flow in your React Native (Expo) app using Firebase as the backend, you're in the right place. I've spent countless hours debugging OAuth flows, and let me tell you, integrating with accounting APIs can be particularly tricky. Trust me, I've been there, staring at cryptic error messages, wondering where I went wrong. This guide is born out of that experience, aiming to save you from the same headaches. In this article, I'll walk you through a solution that I've successfully implemented in several projects. We'll cover everything from setting up your Firebase functions to handling the OAuth2 dance with Xero and securely storing tokens. You might be surprised to know how much simpler it can be with the right approach. We'll also touch upon some of the common pitfalls and how to avoid them. This solution will address some of the popular programming topics as well. So, let's d…