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import { useEffect, useLayoutEffect, useRef } from 'react';
/**
* Returns ref that is `true` on the initial render and `false` on subsequent renders. It
* is StrictMode safe, so will reset correctly if the component is unmounted and remounted.
*
* This hook *must* be used before any effects that read it's value to be accurate.
*/
export default function useIsInitialRenderRef() {
const effectCount = useRef(0);
const isInitialRenderRef = useRef(true);
useLayoutEffect(() => {
effectCount.current += 1;
if (effectCount.current >= 2) {
isInitialRenderRef.current = false;
}
});
// Strict mode handling in React 18
useEffect(() => () => {
effectCount.current = 0;
isInitialRenderRef.current = true;
}, []);
return isInitialRenderRef;
}