import { AttachmentOptions } from 'pdf-lib';
import { Column, Content, DynamicContent, ImageDefinition, Size, TDocumentDefinitions, TableCell } from 'pdfmake/interfaces';
/**
 * Definition of an image to be embedded into the document.
 */
export type PdfMakeImageDefinition = ImageDefinition;
/**
 * Column used as part of ContentColumns.
 */
export type PdfMakeColumn = Column;
/**
 * Common type for all available content elements.
 *
 * Special content types:
 * - A string is rendered like a ContentText
 * - An array is rendered like a ContentStack.
 */
export type PdfMakeContent = Content;
/**
 * Callback that returns content depending on the current page number,
 * the total number of pages, or the size of the current page.
 */
export type PdfMakeDynamicContent = DynamicContent;
/**
 * Sizes for the width of stand-alone columns and table columns.
 *
 * Available options are:
 * - A number to define an absolute width in `pt`
 * - A percentage string such as `50%` to fill a portion of the available space
 * - `auto` to set the width based on the content
 * - `*` to fill the remaining available space, distributed equally among
 * all star-sized columns.
 */
export type PdfMakeSize = Size;
/**
 * A cell of a Table.
 * - Can be any valid content. Content objects provide additional properties to control
 * the cell's appearance.
 * - Use empty objects (`{}`) as placeholders for cells that are covered by other cells
 * spanning multiple rows or columns.
 */
export type PdfMakeTableCell = TableCell;
/**
 * The definition for an embedded file inside of an pdf.
 */
export interface PdfMakeEmbeddedFile {
    /**
     * The src of the file.
     * Can be either a local file reference, an url or a data uri.
     */
    src: string;
    /**
     * The name of the file with the extension.
     */
    name: string;
    /**
     * A description fo the file.
     */
    description?: string;
}
/**
 * Extended type of the pdfmake document definition.
 * Includes the files property of the beta version.
 */
export type PdfMakeDocumentDefinition = TDocumentDefinitions;
/**
 * Utility class for handling pdf files.
 */
export declare abstract class PdfUtilities {
    /**
     * Creates a pdf from the provided document definition.
     * @param documentDefinition - The definition to create the pdf from.
     * @returns The finished pdfMake pdf as a base64 string.
     */
    static createPdf(documentDefinition: PdfMakeDocumentDefinition): Promise<string>;
    /**
     * Attaches a file to the pdf at the given path.
     * @param pdfFilePath - The path of the pdf to attach to.
     * @param attachment - The raw attachment data.
     * @param name - The name of the file to attach.
     * @param options - Other options for the attachment, eg. The mime type.
     */
    static attach(pdfFilePath: string, attachment: string | Uint8Array | ArrayBuffer, name: string, options?: AttachmentOptions): Promise<void>;
    /**
     * Sets the XMP Metadata from the given xml string.
     * @param metadataXML - The xmp metadata xml as a string.
     * @param pdfFilePath - The path of the pdf to set the metadata for.
     */
    private static setXmpMetadata;
    /**
     * Gets the XMP Metadata from the pdf under the provided path.
     * @param pdfFilePath - The path of the pdf to get the xmp metadata from.
     * @returns An PDFObject or undefined, when no metadata was set.
     */
    static getXmpMetadata(pdfFilePath: string): Promise<string | undefined>;
    private static assertIsLiteralOrHexString;
}