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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | 1x 1x 1x 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x | import { useCallback, useEffect, useRef } from 'react';
/**
* Return a function that returns a boolean indicating if the component is mounted.
* Component is considered mounted right after the first render, and not during first render.
*/
export const useIsMounted = (): (() => boolean) => {
const mountedRef = useRef(false);
const get = useCallback(() => mountedRef.current, []);
useEffect(() => {
mountedRef.current = true;
return () => {
mountedRef.current = false;
};
}, []);
return get;
};
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