Trace props or state that changed and made a React PureComponent refresh

TraceChanges.ts

export class Test extends React.PureComponent<{}, {}> {
    UNSAFE_componentWillUpdate(nextProps: any, nextState: any) {
        const changedProps = _.reduce(
            this.props,
            (result: string[], value, key) => value === nextProps[key] ? result : result.concat(key),
            []);
        console.log("changedProps: ", changedProps);
        const changedStates = _.reduce(
            this.state,
            (result: string[], value, key) => value === nextState[key] ? result : result.concat(key),
            []);
        console.log("changedStates: ", changedStates);
    }
}