import * as grpc from '@grpc/grpc-js';
import { Observable } from 'rxjs';
/** Optional return value type of reactive server methods with unary responses. */
export interface ReactiveServerUnaryResponse<ResponseType> {
    value: ResponseType;
    trailer?: grpc.Metadata;
    flags?: number;
}
/** Reactive signature for server methods with unary request and response types. */
export declare type ReactiveServerUnaryMethod<RequestType, ResponseType> = (request: RequestType, call: grpc.ServerUnaryCall<RequestType, ResponseType>) => Promise<ResponseType | ReactiveServerUnaryResponse<ResponseType>>;
/** Reactive signature for server methods with streaming request and unary response types. */
export declare type ReactiveServerRequestStreamMethod<RequestType, ResponseType> = (request: Observable<RequestType>, call: grpc.ServerReadableStream<RequestType, ResponseType>) => Promise<ResponseType | ReactiveServerUnaryResponse<ResponseType>>;
/** Reactive signature for server methods with unary request and streaming response types. */
export declare type ReactiveServerResponseStreamMethod<RequestType, ResponseType> = (request: RequestType, call: grpc.ServerWritableStream<RequestType, ResponseType>) => Observable<ResponseType>;
/** Reactive signature for server methods with streaming request and response types. */
export declare type ReactiveServerBidirectionalStreamMethod<RequestType, ResponseType> = (request: Observable<RequestType>, call: grpc.ServerDuplexStream<RequestType, ResponseType>) => Observable<ResponseType>;
/** Reactive signature for all server methods. */
export declare type ReactiveServerMethod<RequestType, ResponseType> = ReactiveServerUnaryMethod<RequestType, ResponseType> | ReactiveServerRequestStreamMethod<RequestType, ResponseType> | ReactiveServerResponseStreamMethod<RequestType, ResponseType> | ReactiveServerBidirectionalStreamMethod<RequestType, ResponseType>;