import { EchartOptionsProps } from './types';
import { Theme } from '@mui/material';
/**
 * Deep-merges two ECharts option objects with smart handling for `color`, `axisLabel`, and `series` keys.
 *
 * @param optionA - Base ECharts options.
 * @param optionB - Override ECharts options to merge on top.
 * @param customMergeFn - Optional function returning a custom merge strategy per key.
 * @returns The merged ECharts options object.
 *
 * @remarks
 * - `color` arrays are replaced entirely (not concatenated).
 * - `axisLabel` formatters are composed so the base formatter can suppress values by returning `''`.
 * - `series` arrays are merged element-by-element rather than concatenated.
 *
 * @example
 * ```tsx
 * const option = mergeEchartWidgetConfig(props.option, {
 *   series: [{ barWidth: '60%', itemStyle: { borderRadius: [4, 4, 0, 0] } }],
 *   tooltip: { trigger: 'axis' },
 * })
 * ```
 */
export declare function mergeEchartWidgetConfig<T extends EchartOptionsProps>(optionA: T | undefined, optionB: T | undefined, customMergeFn?: (key: string) => ((a: unknown, b: unknown) => unknown) | undefined): T;
/**
 * Generates ECharts `dataZoom` configuration for interactive zoom and pan on chart axes.
 *
 * @param range - Initial visible range as `{ start, end }` percentages (0-100). Defaults to full range.
 * @param options - Zoom behavior options including axis sliders, inside zoom, and formatter.
 * @param theme - Optional MUI theme for styled slider handles and backgrounds.
 * @returns An object containing the `dataZoom` array configuration.
 */
export declare function getEChartZoomConfig({ start, end }?: {
    start: number;
    end: number;
}, { inside, xSlider, ySlider, showSliders, xAxisLabelFormatter, bottomOffset, }?: {
    inside?: boolean;
    xSlider?: boolean;
    ySlider?: boolean;
    showSliders?: boolean;
    xAxisLabelFormatter?: (value: number) => string;
    bottomOffset?: number;
}, theme?: Theme): {
    dataZoom: ({
        throttle: number;
        type: string;
        xAxisIndex: number[];
        yAxisIndex: number[];
        show: boolean;
        zoomLock: boolean;
        start: number;
        end: number;
        orientation?: undefined;
    } | {
        throttle: number;
        type: string;
        show: boolean;
        zoomLock: boolean;
        start: number;
        end: number;
        orientation: string;
        xAxisIndex?: undefined;
        yAxisIndex?: undefined;
    } | {
        brushSelect: boolean;
        moveHandleSize: number;
        handleSize: string;
        handleIcon: string;
        throttle: number;
        type: string;
        xAxisIndex: number[];
        bottom: number;
        height: number;
        show: boolean;
        zoomLock: boolean;
        start: number;
        end: number;
        labelFormatter: ((value: number) => string) | undefined;
        showDetail: boolean;
        yAxisIndex?: undefined;
        orientation?: undefined;
    } | {
        brushSelect: boolean;
        moveHandleSize: number;
        handleSize: string;
        handleIcon: string;
        throttle: number;
        type: string;
        left: number;
        width: number;
        yAxisIndex: number[];
        show: boolean;
        zoomLock: boolean;
        start: number;
        end: number;
        xAxisIndex?: undefined;
        orientation?: undefined;
    })[];
};
/**
 * Generates ECharts `brush` configuration for interactive data selection on charts.
 *
 * @param options - Brush options including type, mode, and target axis index.
 * @returns An object containing the `brush` configuration.
 */
export declare function getEChartBrushConfig({ brushType, brushMode, xAxisIndex }?: {
    brushType?: string;
    brushMode?: string;
    xAxisIndex?: number;
    throttleType?: string;
    throttleDelay?: number;
}): {
    brush: {
        toolbox: string[];
        brushType: string;
        brushMode: string;
        xAxisIndex: number;
    };
};
/**
 * Returns an ECharts `stack` configuration to group series into a stacked layout.
 *
 * @param stackGroup - The stack group identifier. Defaults to the library's default group.
 * @returns An object with the `stack` property set to the group name.
 */
export declare function getEChartStackConfig(stackGroup?: string): {
    stack: string;
};