import { Element, View } from '@antv/g2';
import { ChartConfig, ChartOptions } from '../interfaces';
import { BaseChart } from '../core/framework';
import { Datum } from '@antv/g2/lib/interface';
import { LooseObject } from '@antv/g-base';
export declare class Bar extends BaseChart {
    render: (options: ChartOptions, config: ChartConfig) => {} | undefined;
    update: (data: Datum[]) => void;
}
export declare class TimeBar extends Bar {
    leadView: View | undefined;
    backView: View | undefined;
    textView: View | undefined;
    xField: string;
    yField: string;
    readonly fetchBackData: (yField: string, data: LooseObject[]) => LooseObject[];
    readonly renderBackground: (view: View, yField: string, data: LooseObject[]) => void;
    readonly renderSuffixText: (elements: Element[]) => void;
    update: (data: LooseObject[]) => void;
    render: (options: ChartOptions, config: ChartConfig) => {} | undefined;
}