Building React Native Apps that Feel Truly Native
Techniques for achieving 60fps animations, optimized memory usage, and seamless OS integrations in cross-platform development.
Breaking the JavaScript Bridge
The biggest performance bottleneck in older React Native applications was the asynchronous bridge between JavaScript and Native code. With the New Architecture and Fabric, this paradigm has shifted.
Reanimated 3 and Worklets
To ensure animations never drop frames, we execute animation logic directly on the UI thread using Reanimated worklets. Whether it's a complex shared-element transition or a simple swipe-to-delete gesture, bypassing the JS thread guarantees a buttery smooth 60fps (or 120fps on ProMotion displays).
Memory Management with FlashList
Rendering thousands of items in a list view requires aggressive memory management. By replacing FlatList with FlashList, we recycle views efficiently, completely eliminating the "blank space" issue when scrolling rapidly.