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42 lines
857 B
TypeScript
42 lines
857 B
TypeScript
import {useState, useEffect, useRef} from 'react';
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import {isClient} from './util';
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export interface State {
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x: number;
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y: number;
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}
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const useWindowScroll = (): State => {
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const frame = useRef(0);
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const [state, setState] = useState<State>({
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x: isClient ? window.scrollX : 0,
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y: isClient ? window.scrollY : 0
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})
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useEffect(() => {
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const handler = () => {
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cancelAnimationFrame(frame.current)
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frame.current = requestAnimationFrame(() => {
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setState({
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x: window.scrollX,
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y: window.scrollY
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})
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})
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}
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window.addEventListener('scroll', handler, {
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capture: false,
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passive: true
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})
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return () => {
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cancelAnimationFrame(frame.current);
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window.removeEventListener('scroll', handler);
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};
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}, [])
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return state
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}
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export default useWindowScroll
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