import type { HostTransport } from "./protocol";
export interface SpawnHostOptions {
    instanceId: string;
    /** argv[1] for the child — the CLI entry point. Defaults to this process's. */
    entryPoint?: string;
    timeoutMs?: number;
}
/**
 * Connect to the host for this instance, spawning it if none is listening.
 *
 * Attach-first rather than spawn-first: the host outliving the streamer is the
 * feature, so the common case after a restart is that one is already there.
 */
export declare function connectOrSpawnHost(options: SpawnHostOptions): Promise<HostTransport>;
/**
 * Spawn the host so it survives this process.
 *
 * Three properties, each load-bearing:
 *
 *  - `detached` puts it in its own process group, so a Ctrl-C or a group kill
 *    aimed at the streamer does not take the agents with it.
 *  - `stdio: "ignore"` means it holds none of our descriptors. A child that
 *    inherited our stdout keeps a pipe open that the parent's exit cannot
 *    close, and on POSIX would also receive our terminal's SIGHUP — which is
 *    precisely the hangup this whole feature exists to avoid.
 *  - `unref()` removes it from our event loop, so the streamer can exit while
 *    the host keeps running.
 */
export declare function spawnDetachedHost(socketPath: string, entryPoint?: string): void;
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