export declare const RELAY_PROTOCOL_VERSION = 1;
export declare const RELAY_HEADER_BYTES = 16;
export declare const RelayMessageType: {
    readonly DeviceHello: 1;
    readonly OpenStream: 2;
    readonly OpenResult: 3;
    readonly StreamData: 4;
    readonly StreamClose: 5;
    readonly InstallProgress: 6;
    readonly Error: 7;
    readonly Ping: 8;
    readonly Pong: 9;
    readonly StartPairing: 10;
    readonly StartInstall: 11;
    readonly PairRecordReady: 12;
};
export type RelayMessageType = (typeof RelayMessageType)[keyof typeof RelayMessageType];
export type RelayFrame = {
    type: RelayMessageType;
    requestId: number;
    streamId: number;
    payload: Uint8Array;
};
export declare function encodeFrame(frame: RelayFrame): Uint8Array<ArrayBuffer>;
export declare function decodeFrame(data: Uint8Array): RelayFrame;
export declare function encodeJson(value: unknown): Uint8Array<ArrayBufferLike>;
export declare function decodeJson<T>(payload: Uint8Array): T;