import { EventEmitter } from '../../stencil-public-runtime';
export type CardChartWidth = 'sm' | 'md' | 'lg';
export type CardChartVariant = 'custom' | 'chart';
/**
 * Standard chart card chrome and composition. The variant owns
 * only the chart/legend relationship; applications continue to own data.
 */
export declare class CardChart {
    el: HTMLElement;
    /** Chart heading shown in the card header. */
    heading: string;
    /** Chart composition behavior. */
    variant: CardChartVariant;
    /** Width token with the matching chart-card min-height. */
    cardWidth: CardChartWidth;
    /** Renders the standard filter action before custom actions. */
    showFilter: boolean;
    filterLabel: string;
    /** Emits when the standard header filter control is activated. */
    dsFilterClick: EventEmitter<void>;
    private hasChartSlot;
    private hasLegendSlot;
    componentWillRender(): void;
    componentDidRender(): void;
    private handleFilterClick;
    render(): any;
}
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