import { ApiActionConfig, ApiByScope, ApiServiceMixedActionConfig, GatewayConfig, GatewayRequest, GatewayResponse, SchemasByScope, SendStats } from '../models/common';
import { GatewayContext } from '../models/context';
import { AppErrorConstructor } from '../models/error';
import type { GrpcContext } from './grpc';
export declare function createMixedAction<TSchema extends SchemasByScope, Context extends GatewayContext, Req extends GatewayRequest<Context>, Res extends GatewayResponse>(config: ApiServiceMixedActionConfig<Context, Req, Res, any, any, any>, api: ApiByScope<TSchema, Context, Req, Res>, serviceName: string, actionName: string, extra: {
    config: GatewayConfig<Context, Req, Res>;
    grpcContext: GrpcContext;
    sendStats?: SendStats<Context>;
}, ErrorConstructor: AppErrorConstructor): (actionConfig: ApiActionConfig<Context, any>) => Promise<{
    responseData: any;
    debugHeaders: {};
}>;