import { LitElement, PropertyValueMap } from 'lit';
import { InputData } from './definition-schema.js';
export declare class WidgetBarchart extends LitElement {
    inputData?: InputData;
    private canvasList;
    chartContainer?: HTMLElement | null;
    version: string;
    update(changedProperties: Map<string, any>): void;
    protected firstUpdated(_changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>): void;
    transformInputData(): void;
    applyInputData(): Promise<void>;
    createChart(): void;
    static styles: import("lit").CSSResult;
    render(): import("lit-html").TemplateResult<1>;
}