import type { HTMLAttributes } from 'svelte/elements';
import type { CartesianDatum, ChartMargin, ChartSeries, ChartSlotClasses } from '../../internal/charts/types.js';
/**
 * @summary A trend chart with the area under each line filled, for volume that adds up.
 * @description Area chart for trends with volume emphasis — filled regions
 * under each series, optionally stacked. Zero-dependency SVG on the design-
 * token palette, responsive, dark-mode aware, with a screen-reader data-table
 * fallback.
 *
 * @tag display
 * @tag data
 * @related LineChart
 * @related BarChart
 * @stability beta
 *
 * @example
 * ```svelte
 * <AreaChart
 *   stacked
 *   data={[
 *     { label: 'Jan', values: [4, 6] },
 *     { label: 'Feb', values: [7, 3] }
 *   ]}
 *   series={[{ label: 'New' }, { label: 'Returning' }]}
 * />
 * ```
 */
export interface AreaChartProps extends Omit<HTMLAttributes<HTMLElement>, 'children'> {
    /** Ordered categories with per-series values. */
    data: CartesianDatum[];
    /** Series metadata (labels + colors); defaults to one per value column. */
    series?: ChartSeries[];
    /** Stack series cumulatively instead of overlaying them. @default false */
    stacked?: boolean;
    /** Opacity of the area fill (0–1). @default 0.2 (overlay) / 0.85 (stacked) */
    fillOpacity?: number;
    /** SVG height in px. @default 240 */
    height?: number;
    /** Fixed width in px; omit for responsive width. */
    width?: number;
    /** Plot margins; merged over the defaults. */
    margin?: ChartMargin;
    /** Format values for axis labels, tooltips, and the data table. */
    formatValue?: (value: number) => string;
    /** BCP-47 locale for the default number formatter. */
    locale?: string;
    /** Show the series legend (only renders with >1 series). @default true */
    showLegend?: boolean;
    /** Render horizontal gridlines. @default true */
    showGrid?: boolean;
    /** Accessible label; a summary is generated when omitted. */
    ariaLabel?: string;
    /** Extra classes merged onto the wrapper. */
    class?: string;
    /** Remove all default tv classes. */
    unstyled?: boolean;
    /** Per-slot class overrides. */
    slotClasses?: ChartSlotClasses;
    /** Apply a named preset registered on `<BlocksProvider>`. */
    preset?: string;
}
export { default as AreaChart } from './AreaChart.svelte';