import { type Credentials, type RawWeixinMessage } from './types.js';
export type MessageListener = (msg: RawWeixinMessage, contextToken: string) => void;
export type ScanCallback = (qrcode: string, status: 'wait' | 'scaned' | 'confirmed' | 'expired') => void;
/**
 * Singleton that manages QR login lifecycle and the long-poll loop.
 */
export declare class WeixinClientManager {
    private static _instance?;
    static getInstance(): WeixinClientManager;
    private _credentials?;
    private _cursor;
    private _stopped;
    private _running;
    private _currentController?;
    private _listeners;
    private readonly _contextTokens;
    private _scanCallback?;
    private constructor();
    private _credPath;
    loadCredentials(): Promise<Credentials | undefined>;
    saveCredentials(cred: Credentials): Promise<void>;
    clearCredentials(): Promise<void>;
    login(force?: boolean): Promise<Credentials>;
    ensureCredentials(): Promise<Credentials>;
    start(): Promise<void>;
    stop(): void;
    private _runLoop;
    private _handleMessage;
    setScanCallback(cb: ScanCallback): void;
    addListener(instanceId: symbol, listener: MessageListener): void;
    removeListener(instanceId: symbol): void;
    getContextToken(userId: string): string | undefined;
    get credentials(): Credentials | undefined;
}
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