owncast/web/utils/hook-windowresize.tsx
2022-05-11 23:31:31 -07:00

32 lines
972 B
TypeScript

import { useState, useEffect } from 'react';
export default function useWindowSize() {
// Initialize state with undefined width/height so server and client renders match
// Learn more here: https://joshwcomeau.com/react/the-perils-of-rehydration/
const [windowSize, setWindowSize] = useState({
width: undefined,
height: undefined,
});
useEffect(() => {
// Handler to call on window resize
function handleResize() {
// Set window width/height to state
setWindowSize({
width: window.innerWidth,
height: window.innerHeight,
});
}
// Add event listener
window.addEventListener('resize', handleResize);
// Call handler right away so state gets updated with initial window size
handleResize();
// Remove event listener on cleanup
return () => window.removeEventListener('resize', handleResize);
}, []); // Empty array ensures that effect is only run on mount
return windowSize;
}