export interface WhatsAppBindingState {
    pairedChatId: string | null;
    pairedAt: string | null;
}
export declare class WhatsAppBindingStore {
    private readonly filePath;
    constructor(filePath: string);
    load(): Promise<WhatsAppBindingState>;
    save(chatId: string): Promise<WhatsAppBindingState>;
    clear(): Promise<void>;
}
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