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31 lines
895 B
31 lines
895 B
import * as React from 'react';
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// allow the hook to work in SSR
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const useLayoutEffect = typeof window !== 'undefined'
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? React.useLayoutEffect
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: React.useEffect;
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/**
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* Alternative to useCallback that doesn't update the callback when dependencies change
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*
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* @see https://reactjs.org/docs/hooks-faq.html#how-to-read-an-often-changing-value-from-usecallback
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* @see https://github.com/facebook/react/issues/14099#issuecomment-440013892
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*/
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export function useInvariant<
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Args extends unknown[],
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Return>(fn: (...args: Args) => Return,
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): ((...args: Args) => Return) {
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const ref = React.useRef<(...args: Args) => Return>(() => {
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throw new Error('Cannot call an event handler while rendering.');
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});
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useLayoutEffect(() => {
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ref.current = fn;
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});
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return React.useCallback((...args: Args) => {
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return ref.current(...args);
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}, []);
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}
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export default useInvariant;
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