How to reduce build time by 60% with CI build optimization for React Native apps

We recently explored improvements to Bitrise's demo apps, specifically the React Native demo app, to optimize our DevOps platform for fast feedback and performance. We reduced build time by nearly 60% through a combination of using the latest version of React Native, disabling Flipper on iOS, and leveraging parallelization in our CI pipeline. This allowed us to showcase Bitrise's ability to provide developers with fast feedback, which is crucial for maintaining flow and producing high-quality apps. By optimizing demo app workflows and utilizing pipelines, we achieved a total build time of less than 6 minutes, including unit testing and building both iOS and Android apps. Our changes demonstrate best practices in mobile expertise and encourage users to try similar optimizations to improve their builds' speed and efficiency.