import { IExecuteFunctions } from 'n8n-workflow';
export declare function fetchInstances(ef: IExecuteFunctions): Promise<{
    json: {
        success: boolean;
        data: any;
    };
    error?: undefined;
} | {
    json: {
        success: boolean;
        error: {
            message: string;
            details: any;
            code: any;
            timestamp: string;
        };
    };
    error: {
        success: boolean;
        error: {
            message: string;
            details: any;
            code: any;
            timestamp: string;
        };
    };
}>;