import { CurveFactory } from 'd3-shape';
export interface LineChartProps {
    /**
     * Color of the line. Falls back to theme's dark color.
     * Used for single-series mode (when `keys` is not set).
     */
    lineColor?: string;
    /**
     * Colors for each line when using multi-series mode (`keys`).
     */
    lineColors?: string[];
    /**
     * Field names in data objects for each line series.
     * When set, enables multi-line mode. When empty, falls back to `seriesName`.
     */
    keys?: string[];
    /**
     * Display names for each key in the legend.
     */
    groups?: string[];
    /**
     * Hide the legend (only relevant in multi-line mode).
     */
    hideLegend?: boolean;
    /**
     * Fixed width for y-axis labels in pixels. If not set, width is calculated automatically.
     */
    fixedLabelWidth?: number | null;
    /**
     * Fixed height for the chart in pixels. If not set, height is calculated from width.
     */
    fixedHeight?: number | null;
    /**
     * Field name in data objects containing the y-axis value.
     * Used for single-series mode (when `keys` is not set).
     */
    seriesName?: string;
    /**
     * Number of x-axis ticks or d3 tick configuration.
     */
    xAxisTicks?: object | number | ((d: any) => any) | null;
    /**
     * Formatter function or d3 format string for y-axis tick labels.
     */
    yAxisTickFormat?: ((v: any) => string) | string;
    /**
     * Number of y-axis ticks or d3 tick configuration.
     */
    yAxisTicks?: object | number;
    /**
     * Field name in data objects containing the x-axis time/date value (parsed as year).
     */
    timeseriesKey?: string;
    /**
     * Data to display, either as a URL string to fetch or an array of objects.
     */
    data?: string | Record<string, unknown>[] | null;
    /**
     * Type of data file when fetching from URL.
     */
    dataUrlType?: 'json' | 'csv' | 'tsv';
    /**
     * Aspect ratio (height/width) for the chart.
     */
    chartHeightRatio?: number;
    /**
     * D3 curve factory for line interpolation (e.g. d3.curveStep, d3.curveMonotoneX).
     * Defaults to d3.curveLinear.
     */
    curve?: CurveFactory;
    /**
     * Enable social mode for optimal display when sharing on social media.
     */
    socialMode?: boolean;
    /**
     * Aspect ratio to use in social mode.
     */
    socialModeRatio?: number;
}
declare function highlight(key: string): void;
declare function resetHighlight(): void;
declare function isHighlighted(key: string): boolean;
declare function setSizes(): void;
declare const __VLS_export: import('../../../node_modules/vue').DefineComponent<LineChartProps, {
    width: import('../../../node_modules/vue').Ref<number, number>;
    height: import('../../../node_modules/vue').Ref<number, number>;
    setSizes: typeof setSizes;
    isMultiLine: import('../../../node_modules/vue').ComputedRef<boolean>;
    activeKeys: import('../../../node_modules/vue').ComputedRef<string[]>;
    colorScale: import('../../../node_modules/vue').ComputedRef<import('d3-scale').ScaleOrdinal<string, string, never>>;
    formattedData: import('../../../node_modules/vue').ComputedRef<Record<string, any>[]>;
    scaleX: import('../../../node_modules/vue').ComputedRef<import('d3-scale').ScaleTime<number, number, never>>;
    scaleY: import('../../../node_modules/vue').ComputedRef<import('d3-scale').ScaleLinear<number, number, never>>;
    lines: import('../../../node_modules/vue').ComputedRef<import('../../composables/useLineChart').LineChartSeries[]>;
    line: import('../../../node_modules/vue').ComputedRef<string | null>;
    xAxis: import('../../../node_modules/vue').ComputedRef<import('d3-axis').Axis<Date | import('d3-scale').NumberValue>>;
    yAxis: import('../../../node_modules/vue').ComputedRef<import('d3-axis').Axis<import('d3-scale').NumberValue>>;
    highlightedKey: import('../../../node_modules/vue').Ref<string | null, string | null>;
    hasHighlight: import('../../../node_modules/vue').ComputedRef<boolean>;
    highlight: typeof highlight;
    resetHighlight: typeof resetHighlight;
    isHighlighted: typeof isHighlighted;
}, {}, {}, {}, import('../../../node_modules/vue').ComponentOptionsMixin, import('../../../node_modules/vue').ComponentOptionsMixin, {
    loaded: (data: Record<string, unknown>[] | null) => any;
    resized: () => any;
}, string, import('../../../node_modules/vue').PublicProps, Readonly<LineChartProps> & Readonly<{
    onLoaded?: ((data: Record<string, unknown>[] | null) => any) | undefined;
    onResized?: (() => any) | undefined;
}>, {
    keys: string[];
    data: string | Record<string, unknown>[] | null;
    chartHeightRatio: number;
    socialMode: boolean;
    socialModeRatio: number;
    dataUrlType: "json" | "csv" | "tsv";
    fixedLabelWidth: number | null;
    seriesName: string;
    timeseriesKey: string;
    xAxisTicks: object | number | ((d: any) => any) | null;
    yAxisTickFormat: ((v: any) => string) | string;
    yAxisTicks: object | number;
    fixedHeight: number | null;
    lineColors: string[];
    curve: CurveFactory;
    lineColor: string;
    groups: string[];
    hideLegend: boolean;
}, {}, {}, {}, string, import('../../../node_modules/vue').ComponentProvideOptions, false, {}, any>;
declare const _default: typeof __VLS_export;
export default _default;