import type { ChildProcess } from 'node:child_process';
import type { DaemonToWorker } from '../types.js';
/**
 * Resolve only after Node confirms that an IPC message was sent.
 *
 * ChildProcess.send() returning false is not itself a delivery failure: it can
 * mean the message is queued behind IPC backpressure. The callback is the
 * authoritative success/error signal.
 */
export declare function sendWorkerIpc(worker: ChildProcess, message: DaemonToWorker): Promise<void>;
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