import { Type } from '@nestjs/common';
/**
 * Returns registered child DTO constructors for the provided parent prototype.
 * @param {object} parentPrototype - Parent DTO prototype.
 * @returns {Set<Type<unknown>> | undefined} Set of registered child constructors.
 */
export declare function GetRegisteredAutoDtoChildren(parentPrototype: object): Set<Type<unknown>> | undefined;
/**
 * Returns all registered child DTO constructors for the provided parent prototype recursively.
 * @param {object} parentPrototype - Parent DTO prototype.
 * @returns {Array<Type<unknown>>} Registered child constructors including nested descendants.
 */
export declare function GetRegisteredAutoDtoChildrenRecursive(parentPrototype: object): Array<Type<unknown>>;
/**
 * Registers DTO constructors as children of the provided parent prototype.
 * Used to propagate auto DTO context to nested manual DTOs.
 * @param {object} parentPrototype - Parent DTO prototype.
 * @param {unknown} child - Child constructor or array of constructors.
 */
export declare function RegisterAutoDtoChild(parentPrototype: object, child: unknown): void;