import { ShadowLayer } from './shadow';
/** (Re)build the goo + shadow filter chain inside `filter`. Only the spread
 *  rings and inset layers run here — blurred/offset outer shadows are cheaper
 *  as CSS drop-shadow() on the svg element (see TxLiquid.vue). */
export declare function buildGooFilter(filter: SVGElement, blur: number, contrast: number, shadows: ShadowLayer[]): void;