| 1 | import useUpdatedRef from './useUpdatedRef';
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| 2 | import { useEffect } from 'react';
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| 3 | /**
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| 4 | * Attach a callback that fires when a component unmounts
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| 5 | *
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| 6 | * @param fn Handler to run when the component unmounts
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| 7 | * @category effects
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| 8 | */
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| 9 |
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| 10 | export default function useWillUnmount(fn) {
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| 11 | var onUnmount = useUpdatedRef(fn);
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| 12 | useEffect(function () {
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| 13 | return function () {
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| 14 | return onUnmount.current();
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| 15 | };
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| 16 | }, []);
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| 17 | } |
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