/**
 * Shared IPC error detection utilities.
 *
 * Used by both Supervisor and DirectMessageBus to distinguish expected
 * channel-close errors (EPIPE, ECONNRESET, etc.) from real bugs.
 */
/**
 * IPC protocol version negotiated during worker startup.
 *
 * Increment this when making breaking changes to:
 *   - forge:group-ready message shape
 *   - UDS handshake protocol
 *   - IPC message framing or envelope fields
 *
 * Workers send this in forge:group-ready; the Supervisor checks it.
 * WorkerChannelManager sends this in forge:handshake; peers check it.
 */
export declare const IPC_PROTOCOL_VERSION = 1;
export interface NodeError extends Error {
    code?: string;
}
/**
 * Returns true if the error is an expected IPC error that occurs when
 * a worker disconnects or its channel closes during normal operation.
 */
export declare function isExpectedIpcError(err: unknown): boolean;
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