import { IMatchOptions } from "../types/types";
/**
 * Is the argument a well-known type "key"
 *
 * Accepts `string`, `string[]` or `IMatchOptions`
 * but only string values can possibly be keys
 * on `WellKnownItemFilters`
 * @param key
 * @returns
 */
export declare function isWellKnownTypeFilter(key: string | string[] | IMatchOptions): boolean;
