/**
 * Recording a finished turn in an ACP thread's conversation.
 */
import { type Message } from '../config/index.js';
/** The part of a session a turn needs. */
export interface TurnSession {
    workspaceRoot: string;
    history: Message[];
    codeepSessionId: string;
    /** Bumped whenever the thread moves to another conversation. */
    conversation?: number;
}
/**
 * Start a turn: returns the function that records its messages once it ran.
 * If the thread moved to another conversation meanwhile, the turn belongs to
 * the one it started in — it is saved there, not appended to the new one —
 * and after a /rewind of that same conversation it is dropped, since saving
 * it would undo the rewind.
 */
export declare function beginTurn(session: TurnSession): (entries: Message[]) => void;