import { GenericAccessor } from '../types/accessor';
import { FillPattern, FillPatternType, LinePattern, LinePatternType } from '../styles/patterns';

/** Attribute set on chart paths to carry the series index, used by the `theme-patterns` CSS fallback. */
export declare const UNOVIS_PATTERN_INDEX_ATTR = "unovis-pattern-index";
/** Resolves a `pattern` accessor (constant or function) to a built-in pattern definition, or `null`. */
export declare function getPattern<T>(d: T, accessor: GenericAccessor<FillPatternType | LinePatternType, T>, index?: number): FillPattern | LinePattern | null;
/** Returns the CSS `mask` value (`url(#...)`) for a resolved fill pattern, or `null`. */
export declare function getFillPatternValue(p: FillPattern | LinePattern | null): string | null;
/**
 * Returns the marker `url(#...)` and dash array for a resolved line pattern.
 * Uses a shared `context-stroke` marker that inherits the path color when supported, otherwise
 * injects a color-specific marker into the chart SVG (`color` and `context` are only needed for the fallback).
 */
export declare function getLinePatternValue(p: FillPattern | LinePattern | null, color?: string | null, context?: Element | null): {
    marker: string | null;
    dashArray: string | null;
} | null;