import { LitElement } from 'lit';

export interface AspectRatioProps {
    width: number;
    height: number;
    maxWidth?: number | undefined;
}
/**
 * @summary Responsively resize a single block-level child to a specified aspect ratio.
 * @slot - Single block child (e.g., iframe, video, img, div)
 * @part ag-aspect-ratio - The wrapper that enforces the aspect ratio
 */
export declare class AgAspectRatio extends LitElement implements AspectRatioProps {
    static styles: import('lit').CSSResult;
    width: number;
    height: number;
    maxWidth?: number | undefined;
    constructor();
    private get _aspectStyle();
    render(): import('lit').TemplateResult<1>;
}
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