The First File-Based Router for Native Apps! — The future of native navigation is here, and it’s file-based! With the new Expo Router v1 (Release Candidate), pages are automatically generated by simply creating files in your project. You can focus on building the content of your pages rather than wrestling with all the boilerplate required to compose pages…

TL;DR: The new library Expo Router is a work in progress, join the discussion on GitHub! Refer to the Expo Router documentation to get started and learn more. Motivation One of the hardest, unsolved problems in (cross-platform) app development is navigation. There’s seemingly no right way to set up navigation in…

In Expo SDK 46 we introduced a new “Local Expo CLI”, to replace the “Global Expo CLI” (npm i -g expo-cli). Unlike the global CLI, the local CLI is installed in every project and stays versioned with the runtime code — meaning projects are easier to set up, stay working…

Update: Learn more about the new Expo CLI in our announcement post. We are very excited to announce the beta release of our new versioned Expo CLI that is installed locally in your project instead of globally on your computer. Versioning the CLI offers the following benefits: Longevity: Projects will…

Modern web development is fast, scalable, and iterative. With new tools like ESBuild, SWC, and Sucrase emerging, we at Expo figured it was time to start looking at how we can utilize new bundler techniques to improve cross-platform app development. Today I’m proud to introduce the largest bundling improvement, possibly…

Expo Go can get you from zero to “hello world” without ever needing to do a native build. This works great for many cases, but when it comes time for custom native code, then what do you do? Historically, you’d “eject” from Expo, losing the ability to do tons of…

The easiest way to create media queries universally! — TL;DR: Demo Component A big open question we’ve had while developing Expo web is how would someone go about creating media queries. A media query is a style rule that can be toggled based on device conditions. They’re a critical part of easily building a responsive layout that works on…

React is an extremely powerful library, you can create a renderer for literally anything! So that got me thinking why isn’t there a React renderer for nothing? I mean after all doing nothing is one of my favorite hobbies. I would just sit and think why is it that I…

The official approach to testing your universal projects — Earlier this year we announced web support for Expo making it a universal framework for building apps. With this came a few big questions around stability and maintainability. For instance how would someone write a universal project and ensure that it works on every platform. Unit testing with Jest is…