import type { FillStyle, Gradient, Pattern, Shadow, StrokeStyle } from '../types';
export declare function isGradient(style: FillStyle | StrokeStyle): style is Gradient;
export declare function isPattern(style: FillStyle | StrokeStyle): style is Pattern;
export declare function gradientToCss(g: Gradient): string;
export declare function createSvgGradient(doc: Document, id: string, g: Gradient): SVGLinearGradientElement | SVGRadialGradientElement;
export declare function shadowToCss(shadow: Shadow): string;
export declare function createSvgShadowFilter(doc: Document, id: string, shadow: Shadow): SVGFilterElement;
export declare function setCanvasFill(ctx: CanvasRenderingContext2D, fill: FillStyle, patternCache?: Map<string, CanvasPattern>): void;
export declare function setCanvasStroke(ctx: CanvasRenderingContext2D, stroke: StrokeStyle): void;
export declare function fillStyleRef(style: FillStyle | StrokeStyle, prefix: string, id: string): string;