import { LitElement } from 'lit';
import * as d3 from 'd3';
export declare class ChartBase extends LitElement {
    static styles: import("lit").CSSResult;
    get chartContainer(): HTMLDivElement;
    observedElement: HTMLElement | null;
    resizeObserver: ResizeObserver | null;
    svg: d3.Selection<SVGSVGElement, unknown, null, undefined> | null;
    renderer: 'canvas' | 'svg';
    connectedCallback(): void;
    disconnectedCallback(): void;
    firstUpdated(changedProperties: Map<PropertyKey, unknown>): void;
    render(): import("lit").TemplateResult<1>;
    updated(_p: Map<PropertyKey, unknown>): void;
    updateChart(): void;
    initChart(): void;
    resizeChart(): void;
}
//# sourceMappingURL=base.d.ts.map