import type { Readable, Writable } from "node:stream";
import type { AdmittedChatSession } from "./session.js";
import { type ChatState, type Recipient } from "./view.js";
/**
 * Run the plain presentation until the user leaves or the session ends. Returns the final state.
 * Width is the caller's measured terminal width (Infinity when not a terminal: no wrapping).
 */
export declare function runPlain(opts: {
    session: AdmittedChatSession;
    input: Readable;
    output: Writable;
    width: number;
    initialRecipient?: Recipient;
}): Promise<ChatState>;
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