import { TemplateResult } from 'lit';
import { BahtChartBase, ChartMarker, ChartSeries } from './charts.js';
/**
 * Multi-series line chart with a crosshair tooltip that lists every series at
 * the hovered x. One y axis only — never a second scale.
 *
 *   const el = document.createElement('baht-line-chart');
 *   el.categories = ['Oct', 'Nov', 'Dec'];
 *   el.series = [{ name: 'Income', values: [1, 2, 3] }];
 */
export declare class BahtLineChart extends BahtChartBase {
    /** One entry per line: `{ name, values, color? }`. */
    series: ChartSeries[];
    /** X labels, one per value index. */
    categories: string[];
    /** Fill under the line at 10% opacity. Single series only. */
    area: boolean;
    /** Reference lines (targets, averages) drawn across the plot. */
    markers: ChartMarker[];
    /** Draw the last N points dashed — a projection, not measured data. */
    forecast: number;
    /** Hairline at this value (0, a target). `null` draws none. */
    baseline: number | null;
    /** `ends` labels the last point of each line when the labels do not collide. */
    labelValues: 'ends' | 'none';
    /** Accessible summary; falls back to a generated sentence. */
    label: string;
    /**
     * Drawing width in SVG units. It follows the host, so one unit is one CSS
     * pixel and tick text keeps its real size: not shrunk on a phone, not blown
     * up in a wide card (a capped drawing stretched to 1050px set 11px ticks at 18px).
     */
    private width;
    private resizeObserver;
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected firstUpdated(): void;
    /** Host width → drawing width. Never runs on the server (`hasDom` guard). */
    private measure;
    private get plot();
    protected render(): TemplateResult;
    private crosshairAt;
    private onHover;
    private onLeave;
}