import * as Iopa from 'iopa';
import type { ActionElement } from 'reactive-dialogs';
interface Db {
    get<T>(path: string): Promise<T | null>;
    put<T>(path: string, item: T): Promise<void>;
    delete(path: string): Promise<void>;
}
export interface Session {
    id: string;
    updated: number;
    [key: string]: any;
}
export interface SessionDbCapability {
    get(id: string, timeout: number): Promise<Session>;
    put(session: Partial<Session> & {
        id: string;
    }): any;
    delete(id: string): any;
    dispose(): any;
}
export interface SessionCurrentDialog {
    id: string;
    iopaBotVersion: '2.0';
    lastDirective: number | null;
    previousId: string;
    lastPromptActions: ActionElement[] | null;
}
export interface ReactiveDialogsSession {
    'id': string;
    'bot:CurrentDialog': SessionCurrentDialog | null;
    'bot:LastDialogEndedDate': number | null;
    'bot:NewSession': boolean;
    'bot:Skill': string;
    'bot:SkillVersion': string;
    'bot:Slots': string;
    'bot:Variables': any;
    'isMultiChoicePrompt': boolean;
    [key: string]: any;
}
export declare const useBotSession: (context: Iopa.Context) => [Partial<ReactiveDialogsSession>, (newState: Partial<ReactiveDialogsSession>) => Promise<void>];
export default class SessionMiddleware implements Iopa.Component {
    enabled: boolean;
    app: Iopa.App | null;
    db: Db | null;
    constructor(app: Iopa.App);
    invoke(context: any, next: any): Promise<any>;
}
export {};