Workers vs. Worklets

It is important to distinguish between Worklets (used by Reanimated, VisionCamera, etc.) and Web Workers (this library).

Feature	Worklets	Web Workers (This library)
Primary Goal	Callbacks: High-frequency, specialized logic (Animations, Sensors, Video).	Computation: Persistent offloading of CPU-intensive business logic.
Lifecycle	Short-lived: Usually invoked for specific events or frames.	Persistent: Long-running threads that maintain internal state.
Execution	Often tied to the UI thread or specific specialized threads.	True parallelism on dedicated background threads.
Standard	Custom React Native concepts (Runtime/Worklet).	W3C Web Standard (postMessage, onmessage).
Compatibility	Native-only.	Isomorphic (runs on Web and Native).

When to use what?

Use react-native-webworker when:

• You need to process large datasets (filtering, sorting, mapping).
• You are performing complex mathematical calculations or encryption.
• You need code that runs exactly the same on React Native and the Web.
• You need a persistent background task that manages its own state over time.

Use Worklets when:

• You are driving animations (Reanimated).
• You are processing camera frames in real-time (VisionCamera).
• You need synchronous communication with the UI thread for gesture handling.