export type ObjPath = ReadonlyArray<string | number>;
export type Seq = number;
export interface SetMessage {
    type: "set";
    obj: ObjPath;
    seq: Seq;
    payload: unknown;
}
export interface GetMessage {
    type: "get";
    obj?: ObjPath;
    seq: Seq;
}
export interface CmdMessage {
    type: "cmd";
    seq: Seq;
    payload: unknown;
}
export type OutgoingMessage = SetMessage | GetMessage | CmdMessage;
export interface AckResponse {
    type: "ack";
    seq: Seq;
}
export interface GetResponse {
    type: "get_resp";
    seq?: Seq;
    obj?: ObjPath;
    payload: unknown;
}
export interface UpdateResponse {
    type: "update";
    payload: unknown;
}
export interface ErrorResponse {
    type: "error";
    seq?: Seq;
    /** Human-readable error message. The protocol reuses the `obj` field for it. */
    obj?: string;
}
export type IncomingMessage = AckResponse | GetResponse | UpdateResponse | ErrorResponse;
/** Thrown/rejected when the device rejects a request with a `type:"error"` reply. */
export declare class GlobconError extends Error {
    readonly seq?: Seq | undefined;
    constructor(message: string, seq?: Seq | undefined);
}
export declare function encodeMessage(msg: OutgoingMessage): string;
export declare function decodeMessage(line: string): IncomingMessage;