import type { ValidationOptions } from 'class-validator';
/** @hidden */
export declare const MAP_CONTAINS_KEYS = "mapContainsKeys";
/**
 * Checks if the given value is a [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map)
 * and contains all required keys.
 *
 * #### Example
 * ```typescript
 * // Ensure the map contains (at least) the keys 13 and 42.
 * @MapContainsKeys([13, 42])
 * values: Map<number, string>
 * ```
 *
 * @category Map
 * @param required The keys required in the given map.
 * @param options Generic class-validator options.
 * @typeParam Key The type of keys to check for.
 */
export declare function MapContainsKeys<Key = unknown>(required: Key[], options?: ValidationOptions): PropertyDecorator;