/** Browser-only: rasterize `<canvas>` and complex `<svg>` (e.g. Highcharts) to `<img>` PNGs. */
export interface RasterizeInPlaceOptions {
    /**
     * Mutate the caller's `root` instead of cloning. Default false — cloning avoids
     * disturbing a live SPA (Vue/React) while charts are replaced only on the export copy.
     */
    mutate?: boolean;
    /** Extra CSS selectors to rasterize (e.g. `.highcharts-container`). */
    selectors?: string[];
    /**
     * Supersampling factor for PNG rasterization. Renders at `scale`× pixel density
     * but keeps `<img width>` / `<img height>` at layout size (default `1`, max `4`).
     * Recommended: `2` for chart exports.
     */
    scale?: number;
}
/** True when the SVG is simple enough for dom-docx native rect/text conversion. */
export declare function isSimpleSvgElement(svg: Element): boolean;
export interface PreparedExportRoot {
    root: Element;
    html: string;
    cleanup: () => void;
}
/**
 * Clone (by default) the export root, rasterize charts on the working copy, and return
 * `innerHTML` ready for conversion. The caller's live DOM is left unchanged unless
 * `mutate: true`.
 */
export declare function prepareRootForExport(root: Element, doc: Document, options?: RasterizeInPlaceOptions): Promise<PreparedExportRoot>;
/** Rasterize under `root` in the caller's live DOM. Prefer `convertHtmlToDocx({ rasterizeInPlace: true })` to clone off-screen. */
export declare function rasterizeInPlace(root: Element, options?: RasterizeInPlaceOptions): Promise<void>;
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