/**
 * Downloads a PDF document by creating a temporary anchor element.
 *
 * Retrieves the raw binary data from the pdf.js document proxy, wraps it in a
 * `File` object, creates an object URL, and triggers a download via a synthetic click.
 * The object URL is revoked after 40 seconds to free memory.
 *
 * @param pdfDocument  - The pdf.js document proxy obtained from `pdfjsLib.getDocument()`.
 * @param downloadName - The filename to use for the downloaded file.
 */
declare const _default: (pdfDocument: any, downloadName: string) => Promise<void>;
export default _default;