import { BadRequestError } from './BadRequestError.js';
import { ParamMetadata } from '../metadata/ParamMetadata.js';
import { Action } from '../Action.js';
/**
 * Thrown when parameter is required, but was missing in a user request.
 */
export declare class ParamRequiredError extends BadRequestError {
    name: string;
    constructor(action: Action, param: ParamMetadata);
}