import { GrpcMethod } from '../types';
export declare const GRPC_METHODS = "grpc:methods";
/**
 * This decorator provides a way to configure GRPC Micro Services within LoopBack 4
 * @param params
 *
 * @example
 *
 * myproject/controllers/greeter/Greeter.ts
 * myproject/controllers/greeter/greeter.proto
 * myproject/controllers/greeter/greeter.proto.ts
 *
 * Note: greeter.proto.ts is automatically generated from
 * greeter.proto
 *
 * ```ts
 * import {Greeter, HelloRequest, HelloReply} from 'greeter.proto';
 *
 * class GreeterCtrl implements Greeter.Service {
 *   @grpc(Greeter.SayHello)
 *   public sayHello(request: HelloRequest): HelloResponse {
 *     return { message: 'Hello ' + call.request.name };
 *   }
 * }
 * ```
 */
export declare function grpc(spec: GrpcMethod): MethodDecorator;