types/display/content_disposition.d.ts - pdfjs-dist - Git at Google

 /**
  * Extract file name from the Content-Disposition HTTP response header.
  *
  * @param {string} contentDisposition
  * @returns {string} Filename, if found in the Content-Disposition header.
  */
 export function getFilenameFromContentDispositionHeader(contentDisposition: string): string;
	/**
	* Extract file name from the Content-Disposition HTTP response header.
	*
	* @param {string} contentDisposition
	* @returns {string} Filename, if found in the Content-Disposition header.
	*/
	export function getFilenameFromContentDispositionHeader(contentDisposition: string): string;