import { Subject } from 'rxjs';
import type { RequestData, ResponseData } from './trpc';
export declare const clientFunctionCallEventSubjectMap: Map<number, Subject<RequestData>>;
/**
 * Clear client function call event subjects.
 * If socketId is not undefined or 0, clear all the client function call event subjects.
 * Otherwise, clear the client function call event subjects by socketId.
 * @param socketId The id of socket.
 */
export declare const clearClientFunctionCallEventSubjects: (socketId?: number) => void;
/**
 * Get a client function call event subject by socketId.
 * If there is no cached subject which key is socketId, create an new subject, cache it with socketId and return it.
 * @param socketId The id of socket.
 * @returns The cached subject which key is socketId.
 */
export declare const getClientFunctionCallEventSubject: (socketId: number) => Subject<RequestData>;
export declare const clientFunctionReturnEventSubject: Subject<ResponseData>;