kedao/lib/hooks/useWhyDidYouUpdate.js

Rich Text Editor Based On Draft.js

import { useRef, useEffect } from 'react';
// Hook
function useWhyDidYouUpdate(_name, props) {
    // Get a mutable ref object where we can store props ...
    // ... for comparison next time this hook runs.
    const previousProps = useRef();
    useEffect(() => {
        if (previousProps.current) {
            // Get all keys from previous and current props
            const allKeys = Object.keys(Object.assign(Object.assign({}, previousProps.current), props));
            // Use this object to keep track of changed props
            const changesObj = {};
            // 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) {
            //   console.log('[why-did-you-update]', name, changesObj)
            // }
        }
        // Finally update previousProps with current props for next hook call
        previousProps.current = props;
    });
}
export default useWhyDidYouUpdate;