import Dialog from './index';
import { FlowIntentAction, FlowSessionAction } from '../types';
import { IntentMessage, SessionStartedMessage } from '../types/messages';
/**
 * Dialog flow session manager.
 */
export default class DialogFlow {
    private dialog;
    sessionId: string | null;
    private continuations;
    private continuationsListeners;
    private notRecognizedAction;
    private notRecognizedListener?;
    private ended;
    private slotFiller;
    /**
     * @internal **For internal use only**
     * @param dialog - Dialog instance.
     * @param sessionId - The session id to manage.
     * @param done - A callback to perform when the session ends.
     */
    constructor(dialog: Dialog, sessionId: string | null, done: () => void);
    private reset;
    private cleanUpListeners;
    private continuation;
    private createListener;
    /**
     * @internal **For internal use only.**
     *
     * Starts a dialog flow.
     *
     * @param action - Action to perform on flow creation.
     * @param message - The message received on flow creation.
     * @param options - Internal options.
     */
    start(action: FlowIntentAction | FlowSessionAction, message: IntentMessage | SessionStartedMessage, { sessionStart }?: {
        sessionStart?: boolean | undefined;
    }): Promise<void>;
    private continue;
    private notRecognized;
    private end;
}