import { ChartsReferenceLineClasses } from './chartsReferenceLineClasses';
import { ChartsTextStyle } from '../ChartsText';
import { AxisId } from '../models/axis';
export type CommonChartsReferenceLineProps = {
    /**
     * The alignment if the label is in the chart drawing area.
     * @default 'middle'
     */
    labelAlign?: 'start' | 'middle' | 'end';
    /**
     * The label to display along the reference line.
     */
    label?: string;
    /**
     * Additional space around the label in px.
     * Can be a number or an object `{ x, y }` to distinguish space with the reference line and space with axes.
     * @default 5
     */
    spacing?: number | {
        x?: number;
        y?: number;
    };
    /**
     * The id of the axis used for the reference value.
     * @default The `id` of the first defined axis.
     */
    axisId?: AxisId;
    /**
     * The style applied to the label.
     */
    labelStyle?: ChartsTextStyle;
    /**
     * The style applied to the line.
     */
    lineStyle?: React.CSSProperties;
    /**
     * Override or extend the styles applied to the component.
     */
    classes?: Partial<ChartsReferenceLineClasses>;
};
export declare const ReferenceLineRoot: import("@emotion/styled").StyledComponent<import("@mui/system").MUIStyledCommonProps<import("@mui/material/styles").Theme>, import("react").SVGProps<SVGGElement>, {}>;