/**
 * Get the Lowest Common Ancestor class of two constructors.
 *
 * @param {Function} ctor  First constructor
 * @param {Function} ctor2 Second constructor
 * @returns {Function|undefined} Lowest Common Ancestor class or undefined
 */
export function getClosestCommonAncestorCtor(ctor: Function, ctor2: Function): Function | undefined;
export default getClosestCommonAncestorCtor;