rive-react/src/utils.ts

import { useState, useEffect } from 'react';
import { Dimensions } from './types';

export function useWindowSize() {
  const [windowSize, setWindowSize] = useState<Dimensions>({
    width: 0,
    height: 0,
  });

  useEffect(() => {
    if (typeof window !== 'undefined') {
      const handleResize = () => {
        setWindowSize({
          width: window.innerWidth,
          height: window.innerHeight,
        });
      };
      window.addEventListener('resize', handleResize);
      handleResize();
      return () => window.removeEventListener('resize', handleResize);
    }
  }, []);
  return windowSize;
}