import { useEffect, useRef } from 'react'; // eslint-disable-next-line @typescript-eslint/no-explicit-any function useWhyDidYouUpdate(name: string, props: any) { // Get a mutable ref object where we can store props ... // ... for comparison next time this hook runs. // eslint-disable-next-line @typescript-eslint/no-explicit-any const previousProps = useRef(); useEffect(() => { if (previousProps.current) { // Get all keys from previous and current props const allKeys = Object.keys({ ...previousProps.current, ...props }); // Use this object to keep track of changed props const changesObj: Record = {}; // Iterate through keys allKeys.forEach((key) => { // If previous is different from current if (previousProps.current[key] !== props[key]) { // Add to changesObj changesObj[key] = { from: previousProps.current[key], to: props[key], }; } }); // If changesObj not empty then output to console if (Object.keys(changesObj).length) { // tslint:disable-next-line:no-console console.log('[why-did-you-update]', name, changesObj); } } // Finally update previousProps with current props for next hook call previousProps.current = props; }); } export default useWhyDidYouUpdate;