import type { AccountData } from './api.js';
export interface WechatContact {
    userId: string;
    contextToken: string;
    lastSeen: string;
    displayName?: string;
}
export declare function loadCredentials(): AccountData | null;
export declare function saveCredentials(data: AccountData): void;
export declare function removeCredentials(): void;
export declare function loadSyncBuf(): string;
export declare function saveSyncBuf(buf: string): void;
export declare function loadContacts(): WechatContact[];
export declare function saveContact(userId: string, contextToken: string): void;
export declare function getContactToken(userId: string): string | null;
//# sourceMappingURL=credentials.d.ts.map