import React, { PureComponent } from 'react';
import { InterpolationTypes } from '../../common/utils/interpolation';
import { ChartInternalDataShape, ChartInternalShallowDataShape } from '../../common/data';
import { PropFunctionTypes } from '../../common/utils/functions';
export interface LineProps extends PropFunctionTypes {
    /**
     * Id set internally by `AreaChart`.
     */
    id: string;
    /**
     * Parsed data shape. Set internally by `AreaChart`.
     */
    data: ChartInternalDataShape[];
    /**
     * Width of the chart. Set internally by `AreaChart`.
     */
    width: number;
    /**
     * Interpolation for the area. Set internally by `AreaSeries`.
     */
    interpolation: InterpolationTypes;
    /**
     * Color for the area. Set internally by `AreaSeries`.
     */
    color: any;
    /**
     * D3 scale for X Axis. Set internally by `AreaChart`.
     */
    xScale: any;
    /**
     * D3 scale for Y Axis. Set internally by `AreaChart`.
     */
    yScale: any;
    /**
     * Index of the area in the series. Set internally by `AreaSeries`.
     */
    index: number;
    /**
     * Whether to animate the enter/update/exit. Set internally by `AreaSeries`.
     */
    animated: boolean;
    /**
     * Stroke width of the line.
     */
    strokeWidth: number;
    /**
     * Show the stroke if there is no value.
     */
    showZeroStroke: boolean;
    /**
     * Internal property to identify if there is a area or not.
     */
    hasArea: boolean;
}
interface LineState {
    pathLength?: number;
}
export declare class Line extends PureComponent<LineProps, LineState> {
    static defaultProps: Partial<LineProps>;
    state: LineState;
    ghostPathRef: React.RefObject<SVGPathElement>;
    componentDidMount(): void;
    componentDidUpdate(prevProps: LineProps): void;
    getLinePath(data: ChartInternalShallowDataShape[]): string | null;
    getCoords(): ChartInternalShallowDataShape[];
    getLineEnter(coords: ChartInternalShallowDataShape[]): {
        d: string | undefined;
        strokeDashoffset: number;
        strokeDasharray: string;
    };
    getLineExit(): {
        d: string | undefined;
        strokeDasharray: string;
        strokeDashoffset: number;
    };
    getTransition(): {
        delay: number;
        type: string;
        velocity: number;
        damping: number;
    } | {
        type: boolean;
        delay: number;
    };
    render(): JSX.Element;
}
export {};