import { CSSResultArray, PropertyValues, TemplateResult } from 'lit';
import { LuzmoElement } from '../../utils/base';
/**
 * A decorative loading placeholder block that renders a single skeleton with a
 * built-in shimmer sweep. Fills its container by default; size it with the
 * `width`/`height` attributes or by constraining the parent (e.g. a CSS grid
 * cell). It is purely visual and is hidden from assistive technology.
 *
 * @element luzmo-skeleton-loader
 *
 * @csspart shimmer - the animated highlight that sweeps across the block
 */
export declare class LuzmoSkeletonLoader extends LuzmoElement {
    static get styles(): CSSResultArray;
    /** Optional CSS length overriding the default `100%` width. */
    width?: string;
    /** Optional CSS length overriding the default `100%` height. */
    height?: string;
    protected render(): TemplateResult;
    connectedCallback(): void;
    protected updated(changes: PropertyValues): void;
}