25 lines
733 B
TypeScript
25 lines
733 B
TypeScript
|
import { useEffect, useMemo } from 'react';
|
||
|
|
|
||
|
|
export type OnResizeCallback = (entries: ResizeObserverEntry[]) => void;
|
||
|
|
|
||
|
|
export const getResizeObserverEntry = (
|
||
|
|
target: Element,
|
||
|
|
entries: ResizeObserverEntry[]
|
||
|
|
): ResizeObserverEntry | undefined => entries.find((entry) => entry.target === target);
|
||
|
|
|
||
|
|
export const useResizeObserver = (
|
||
|
|
element: Element | null,
|
||
|
|
onResizeCallback: OnResizeCallback
|
||
|
|
): ResizeObserver => {
|
||
|
|
const resizeObserver = useMemo(() => new ResizeObserver(onResizeCallback), [onResizeCallback]);
|
||
|
|
|
||
|
|
useEffect(() => {
|
||
|
|
if (element) resizeObserver.observe(element);
|
||
|
|
return () => {
|
||
|
|
if (element) resizeObserver.unobserve(element);
|
||
|
|
};
|
||
|
|
}, [resizeObserver, element]);
|
||
|
|
|
||
|
|
return resizeObserver;
|
||
|
|
};
|