Our Solution for Measuring React Native Rendering Times - Shopify

Introduces the open-source `@shopify/react-native-performance` library to measure rendering times in React Native apps, including app startup, navigation, and screen re-renders. Details the library's internal workings, including render passes, state machine, and the definition of 'rendered' as the moment a screen becomes interactive. Provides guidance on integrating the library into Android, iOS, and TypeScript codebases, and outlines usage for measuring different types of render times.