/**
 * Returns the parent class constructor of a given constructor(class) or object.
 *
 * @param {Function|object} ctor The constructor function or object to get the parent class from.
 * @returns {Function|undefined|null} The parent class constructor or undefined/null if there is no parent class.
 */
export function getParentClass(ctor: Function | object): Function | undefined | null;
export default getParentClass;