import { vertexvis } from '@vertexvis/frame-streaming-protos';
import { RequestMessageHandler } from '@vertexvis/stream-api';
export declare function ifRequestId(f: (id: string) => RequestMessageHandler): RequestMessageHandler;
export declare function ifDrawFrame(f: (frame: vertexvis.protobuf.stream.IDrawFramePayload) => RequestMessageHandler): RequestMessageHandler;