/**
 * DOCX reader — header watermark detection.
 *
 * Watermarks are stored as a VML shape inside the first `<w:p>` of a header
 * part. We detect them by walking the header XML tree looking for a shape
 * whose id contains "WaterMark"; the surrounding header content is parsed
 * by the regular header-content parser.
 *
 * Self-contained — no dependency on the body parser, so it lives in its
 * own file to keep `docx-reader.ts` focused on package orchestration.
 */
import type { XmlElement } from "../../xml/types.js";
import type { Watermark } from "../types.js";
/** Detect a watermark shape inside a header XML root, if present. */
export declare function detectWatermarkFromRoot(root: XmlElement): Watermark | undefined;