What is the purpose of React Native's TurboModules?

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**TurboModules** — new native module system. **Benefits:** - Lazy loading (load on demand) - Type-safe interface (Codegen) - Synchronous calls via JSI - Better performance **Defining a TurboModule:** ```tsx // NativeModule.ts import type { TurboModule } from "react-native"; import { TurboModuleRegistry } from "react-native"; export interface Spec extends TurboModule { getConstants(): Promise<{ PI: number }>; multiply(a: number, b: number): number; } export default TurboModuleRegistry.getEnforcing("MyModule"); ``` **Native implementation (iOS):** ```objc @interface MyModule : NSObject @end ``` **Migration:** - Start with new modules - Migrate existing modules incrementally - Test with new architecture flag

React Native: What is the purpose of React Native's TurboModules?