/**
 * Answers a set of property updates based on differences between `oldObj` and
 * `newObj`, excluding any properties that have equal values in both objects.
 *
 * @param oldObj object containing properties having existing values to be
 * updated
 * @param newObj object containing properties having current/updated values
 */
export default function diffObjects(oldObj: any, newObj: any): any | null;