import { SchemaMap, DtoDefinition } from './dto-definition.type';
/**
 * Creates a DtoDefinition from a schema map of field descriptors.
 * The returned object's `.fields` property can be spread to compose or extend DTOs.
 *
 * @example
 * const PersonDto = defineDto({
 *   name: field.string(),
 *   age:  field.integer(),
 * });
 *
 * // Extend via spread:
 * const EmployeeDto = defineDto({
 *   ...PersonDto.fields,
 *   position: field.string(),
 * });
 */
export declare function defineDto<TSchema extends SchemaMap>(schema: TSchema): DtoDefinition<TSchema>;