import { IExecuteFunctions, INodeExecutionData, INodeType, INodeTypeDescription } from 'n8n-workflow';
interface CredentialInfo {
    credentialId: string;
    userID: string;
}
export declare class ZaloLoginByQr implements INodeType {
    description: INodeTypeDescription;
    private static readonly CREDENTIALS_FILE_PATH;
    private static credentialsCache;
    private static cacheTimestamp;
    private static readonly CACHE_DURATION;
    static readCredentialsFromFile(): CredentialInfo[];
    private static saveCredentialsToFile;
    private static addCredentialToFile;
    static getDuplicateCredentials(userID: string, exceptCredentialId?: string): CredentialInfo[];
    static removeCredentials(credentialIds: string[] | string): void;
    execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]>;
}
export {};