/** CSS custom property for scroll-edge fade depth (dimension token or length). */
export declare const SCROLL_EDGE_FADE_SIZE_VAR = "--ds-scroll-edge-fade-size";
export declare const SCROLL_EDGE_FADE_DEFAULT_SIZE = "var(--dimension-size-600)";
export type ScrollEdgeFadeEdge = 'top' | 'bottom' | 'left' | 'right';
export type ScrollEdgeFadeSizeToken = 'size-000' | 'size-050' | 'size-075' | 'size-100' | 'size-150' | 'size-200' | 'size-250' | 'size-300' | 'size-400' | 'size-500' | 'size-600' | 'size-800';
export type ScrollEdgeFadeSize = ScrollEdgeFadeSizeToken | (string & {});
export interface ScrollEdgeFadeOptions {
    /** One or more edges to fade. */
    edges: ScrollEdgeFadeEdge | ScrollEdgeFadeEdge[];
    /**
     * Reveal and hide configured fades from the container's own scroll position.
     * Uses CSS scroll-driven animations with a static-fade fallback; no listener required.
     */
    scrollAware?: boolean;
    /**
     * When true, removes the complete mask. Pass a map to remove only configured
     * edges that are flush when scroll state already lives in JavaScript.
     */
    atEnd?: boolean | Partial<Record<ScrollEdgeFadeEdge, boolean>>;
    /** Force the mask off regardless of scroll position (`ds-fade` `visible={false}`). */
    hidden?: boolean;
}
/** Resolve a dimension size token name or raw CSS length for `--ds-scroll-edge-fade-size`. */
export declare function resolveScrollEdgeFadeSize(size?: ScrollEdgeFadeSize, height?: string): string;
/** Inline style map setting fade depth on a scroll container. */
export declare function scrollEdgeFadeSizeStyle(size?: ScrollEdgeFadeSize, height?: string): Record<string, string>;
/**
 * Alpha mask for a scroll container edge — content fades to transparent so
 * textured backgrounds (shell gradients, images) show through.
 */
export declare function scrollEdgeFadeMaskImage(edge: ScrollEdgeFadeEdge): string;
/** Inline style map for a masked scroll region (single edge). */
export declare function scrollEdgeFadeMaskStyle(edge: ScrollEdgeFadeEdge, size?: ScrollEdgeFadeSize, height?: string): Record<string, string>;
/** Class map for `scroll-edge-fade` modifiers — pair with `scroll-edge-fade.css`. */
export declare function scrollEdgeFadeClassMap(opts: ScrollEdgeFadeOptions): Record<string, boolean>;
/** Whether a scroll container is flush with the given edge (within `threshold` px). */
export declare function isScrollAtEdge(el: HTMLElement, edge: ScrollEdgeFadeEdge, threshold?: number): boolean;
//# sourceMappingURL=scroll-edge-fade.d.ts.map