import * as grpc from 'grpc-web';
import { Observable } from 'rxjs';
import { Metadata } from './metadata';
/** Reactive signature for web client methods with unary request and response types. */
export declare type ReactiveWebClientUnaryMethod<RequestType, ResponseType> = (request: RequestType, metadata?: Metadata | grpc.Metadata) => Promise<ResponseType> & {
    call: grpc.ClientReadableStream<ResponseType>;
};
/** Reactive signature for web client methods with unary request and streaming response types. */
export declare type ReactiveWebClientResponseStreamMethod<RequestType, ResponseType> = (request: RequestType, metadata?: Metadata | grpc.Metadata) => Observable<ResponseType> & {
    call: grpc.ClientReadableStream<ResponseType>;
};