import type { HALJSONResource as Data } from '../../public/NucleonElement/types';
import type { TemplateResult } from 'lit-html';
import { NucleonElement } from '../../public/NucleonElement/NucleonElement';
declare const InternalCard_base: typeof NucleonElement & {
    styles: import("lit-element").CSSResultArray;
};
/**
 * Internal base element for cards.
 *
 * @since 1.17.0
 * @element foxy-internal-card
 */
export declare class InternalCard<TData extends Data> extends InternalCard_base<TData> {
    /**
     * Invoked together with `.render()` to obtain a template for card contents.
     * When extending `InternalCard`, prefer overriding this method to `.render()`.
     */
    renderBody(): TemplateResult;
    render(): TemplateResult;
    get isBodyReady(): boolean;
}
export {};