/**
 * Wire Format — Length-prefixed MessagePack framing
 *
 * Shared encode/decode for CLI ↔ Playground communication over UDS/Named Pipe.
 *
 * Wire Format:
 * ┌────────────────┬───────┬─────────────────────────────────┐
 * │ Length (4 bytes)│ Flags │        Payload (N bytes)        │
 * │  big-endian)   │(1 byte│   (MessagePack, JSON, or raw)   │
 * └────────────────┴───────┴─────────────────────────────────┘
 *
 * Flags byte:
 *   bit 0: compressed (0 = no, 1 = yes) — ALWAYS 0 for UDS
 *   bit 1-2: serialization format (00 = MessagePack, 01 = JSON)
 *   bit 3-7: reserved
 */
export declare const HEADER_SIZE = 5;
export declare const FLAG_FORMAT_MASK = 6;
export declare const FLAG_FORMAT_MSGPACK = 0;
export declare const FLAG_FORMAT_JSON = 2;
export declare const MAX_MESSAGE_SIZE: number;
export declare const PTY_NAMESPACE = "pty";
export interface NamespacedMessage<T = unknown> {
    namespace: string;
    type: string;
    payload?: T;
    id?: string;
    timestamp: number;
}
export declare function encodeMessage(msg: NamespacedMessage, format?: 'msgpack' | 'json'): Buffer;
export interface DecodeResult {
    message: NamespacedMessage;
    bytesConsumed: number;
}
/**
 * Decode a single frame from buffer.
 * Returns null if buffer is incomplete.
 */
export declare function decodeFrame(buffer: Buffer): DecodeResult | null;
//# sourceMappingURL=wire.d.ts.map