export declare enum MessageType {
    Request = "request",
    Response = "response",
    Multi = "multi",
    End = "end",
    Error = "error",
    Anomaly = "anomaly"
}
interface Message<T> {
    t: MessageType;
    c: number;
    s: string;
    p: T;
    z?: string;
}
export interface RequestMessage<T = Record<string, unknown>> extends Message<T> {
    t: MessageType.Request;
}
export interface SingleResponseMessage<R> extends Message<R> {
    t: MessageType.Response;
}
export interface MultiResponseMessage<R> extends Message<R> {
    t: MessageType.Multi;
}
export interface EndMessage extends Message<'END'> {
    t: MessageType.End;
}
export interface AnomalyMessage extends Message<{
    message: string;
    info: unknown;
    requestPayload: unknown;
}> {
    t: MessageType.Anomaly;
}
export interface ErrorMessage extends Message<{
    message: string;
    requestPayload: unknown;
}> {
    t: MessageType.Error;
}
export type ResponseMessage<R> = SingleResponseMessage<R> | MultiResponseMessage<R> | EndMessage | ErrorMessage | AnomalyMessage;
export interface MessageTransport<T, R> {
    send(message: RequestMessage<T> | ResponseMessage<R>): Promise<void>;
    onReceive(receive: (message: RequestMessage<T> | ResponseMessage<R>) => void): void;
    close(): Promise<void>;
}
export {};