scheduleOnUI

scheduleOnUI lets you schedule a function to be executed on the UI Runtime. The callback executes asynchronously and doesn't return a value.

Reference

import { scheduleOnUI } from 'react-native-worklets';

const myFunction = (): void => {
  'worklet';
  console.log('Hello from the UI Runtime!');
};

scheduleOnUI(myFunction); // Hello from the UI Runtime!

Type definitions

function scheduleOnUI<Args extends unknown[], ReturnValue>(
  fun: (...args: Args) => ReturnValue,
  ...args: Args
): void;

Arguments

fun

A reference to a function you want to schedule on the UI Runtime.

args

Arguments to pass to the function.

Remarks

• The callback passed as the argument is automatically workletized and ready to be run on the UI Runtime.

• On the Web, scheduleOnUI schedules work to run on the next animation frame using requestAnimationFrame.

Call table

Mode	RN Runtime	UI Runtime	Worker Runtime
Bundle Mode	✅	✅	✅
Legacy Eval Mode	✅	❌	❌

What does it mean?

Platform compatibility

Native	Web
✅	✅