import type { ValidationOptions } from 'class-validator';
/** @hidden */
export declare const MAP_CONTAINS = "mapContains";
/**
 * 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 values.
 *
 * #### Example
 * ```typescript
 * // Ensure the map contains (at least) 'foo' and 'bar'.
 * @MapContains(['foo', 'bar'])
 * values: Map<number, string>
 * ```
 *
 * @category Map
 * @param required The values required in the given map.
 * @param options Generic class-validator options.
 * @typeParam Value The type of values to check for.
 */
export declare function MapContains<Value = unknown>(required: Iterable<Value>, options?: ValidationOptions): PropertyDecorator;