/**
 * Merge provided options with a set of defaults.
 * @param userOptions - The user given options.
 * @param defaultOptions - Defaults to set if the user hasn't provided a value for
 * that option.
 *
 * @returns An options object that has no missing keys.
 */
export declare function MergeOptionsWithDefaults<T extends object>(userOptions: Partial<T>, defaultOptions: T): T;