import { type AnyObject } from '../../types/misc.js';
import type { ApiEndpoint } from '../endpoint.js';
import type { IEndpointInfo } from '../endpoint.types.js';
import { CallerHooks } from '../hooks.js';
export interface IEndpointInputValidation {
    readonly validate?: IEndpointInputValidation.Validator<IEndpointInfo.ExtractIn<this, AnyObject>>;
    withValidation(validator: IEndpointInputValidation.Validator<IEndpointInfo.ExtractIn<this>>): this;
}
export declare namespace IEndpointInputValidation {
    type Validator<TIn> = (input: TIn) => Promise<void> | void;
    const extender: ApiEndpoint.IBuilderExtender<IEndpointInputValidation>;
    function guard(api: IEndpointInfo): api is (IEndpointInfo & IEndpointInputValidation);
    function tryValidate(api: IEndpointInfo, input: AnyObject): void | Promise<void>;
    function createHooks(): CallerHooks<object>;
}