fumadocs-core/dist/utils/use-on-change.js

The React.js library for building a documentation website

import { useState } from "react";

//#region src/utils/use-on-change.ts
function isDifferent(a, b) {
	if (Array.isArray(a) && Array.isArray(b)) return b.length !== a.length || a.some((v, i) => isDifferent(v, b[i]));
	return a !== b;
}
/**
* @param value - state to watch
* @param onChange - when the state changed
* @param isUpdated - a function that determines if the state is updated
*/
function useOnChange(value, onChange, isUpdated = isDifferent) {
	const [prev, setPrev] = useState(value);
	if (isUpdated(prev, value)) {
		onChange(value, prev);
		setPrev(value);
	}
}

//#endregion
export { useOnChange };
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