/**
 * The mirror's wire: one JSON object per line, both ways.
 *
 * `mirror.ts` decides who can be attached to and what a client's word does;
 * this file only carries lines between a socket and that decision. Nothing
 * here may throw into the process: a client sending garbage has its connection
 * closed, and the run never hears of it.
 */
import type { Socket } from "node:net";
import type { MirrorIn, MirrorOut, Mirrored } from "./mirror.ts";
/** What the wire asks of the mirror, so this file holds no registry of its own. */
export type Mirrors = {
    /** The subagent registered under `id`, if any. */
    find(id: string): Mirrored | undefined;
    /** What an attached client asked for. */
    act(mirrored: Mirrored, input: MirrorIn, reply: (out: MirrorOut) => void): Promise<void>;
    /** The first line a client receives once attached. */
    hello(mirrored: Mirrored): MirrorOut;
};
/** Sends one line to every client attached to `id`. */
export declare function broadcast(id: string, out: MirrorOut): void;
/** Ends every connection to `id`. What the subagent's close does to its panes. */
export declare function hangUp(id: string): void;
/** One client, from its first line to its last. */
export declare function serve(socket: Socket, mirrors: Mirrors): void;
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