export type ComboChartTone = "category1" | "category2" | "category3" | "category4" | "category5" | "category6" | "category7" | "category8";
export type ComboChartBarSeries = {
    label: string;
    data: number[];
    tone?: ComboChartTone;
};
export type ComboChartLineSeries = {
    label: string;
    data: number[];
    tone?: ComboChartTone;
    smooth?: boolean;
};
import { type ChartAnnotation } from "./chartAnnotations.js";
import { type DataLabelsProp } from "./chartDataLabels.js";
type ComboChartProps = {
    categories: string[];
    bars?: ComboChartBarSeries[];
    lines?: ComboChartLineSeries[];
    leftAxisLabel?: string;
    rightAxisLabel?: string;
    legend?: boolean;
    /**
     * Interactive legend (FR-4). Ids/labels of bar/line series hidden from the
     * render (controlled by the parent; default = all visible). Hidden series
     * are omitted and their legend item is shown "off" (`aria-pressed`).
     * Undefined → legacy non-interactive legend, unless `onToggleSeries` is set.
     */
    hiddenSeries?: string[];
    /** Emitted on click / Enter / Space on a legend item. */
    onToggleSeries?: (seriesId: string) => void;
    /**
     * Annotation overlay in DATA space. The x coordinate is CATEGORICAL — it
     * matches a category by equality (band centre); the y coordinate (and
     * `value`/`from`/`to`) are LEFT (bar) value-axis numbers. Regions render
     * behind the bars, every other kind above. Additive: absent ⇒ unchanged.
     */
    annotations?: ChartAnnotation[];
    /**
     * Per-datum value labels on BOTH the bars and the line points. `false`/absent
     * (default) → none. `true` → each value with the chart's numeric formatter.
     * Object → `format(value)` and/or a `position` override. Labels are
     * `aria-hidden` — the values already live in the accessible ChartDataList.
     */
    dataLabels?: DataLabelsProp;
    /**
     * CONTROLLED synchronised hover key (FR-3). The key is the CATEGORY string.
     * When provided (string or null), the crosshair tracks this key instead of
     * the chart's internal pointer hover (null ⇒ nothing shown). Absent keeps
     * the legacy uncontrolled behaviour.
     */
    hoverKey?: string | null;
    /** Emitted when the user hovers a bar/point (its CATEGORY) or leaves (`null`). */
    onHoverKeyChange?: (key: string | null) => void;
    /**
     * FR-5 — keyboard navigation of the categories (roving tabindex). When `true`
     * (or implied by wiring `onSelectKey`), a focusable overlay of one column per
     * category is rendered: one tab stop, arrows move, Home/End jump, Enter/Space
     * select, Escape leaves. Absent ⇒ no overlay, rendering unchanged.
     */
    keyboardNav?: boolean;
    /** Emitted on Enter/Space (category) or `null` on Escape. */
    onSelectKey?: (key: string | null) => void;
    width?: number;
    height?: number;
    label: string;
    class?: string;
};
declare const ComboChart: import("svelte").Component<ComboChartProps, {}, "">;
type ComboChart = ReturnType<typeof ComboChart>;
export default ComboChart;
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