export interface AttributionTextStyle {
    fontSize: number;
    fontFamily: string;
    color: string;
    fontWeight: number | string;
    fontStyle: string;
}
/**
 * Returns a clone of the given chart SVG with the reference attribution text
 * appended below the chart content, wrapped to the SVG's width and with the
 * SVG's height/viewBox extended to fit it.
 *
 * The original `svg` element is left untouched; the caller should pass the
 * returned clone (not the original) to exportChartCallback.
 */
export declare function embedAttributionInSvg(svg: SVGSVGElement, attributionText: string, style: AttributionTextStyle): SVGSVGElement;