/**
 * Downloads a PDF file from base64 data
 * @param base64Data - The base64 encoded PDF data
 * @param downloadName - The name for the downloaded file
 */
export declare const PDFDownloadHelper: (base64Data: string, downloadName: string) => Promise<void>;
/**
 * Generate PDF filename for invoice
 * @param invoice - The invoice object
 * @returns The formatted PDF filename
 */
export declare const generatePDFName: (invoice: {
    invoice_number: string;
}) => string;