/**
 * Copyright Aquera Inc 2023
 *
 * This source code is licensed under the BSD-3-Clause license found in the
 * LICENSE file in the root directory of this source tree.
 */
import { CSSResultArray, TemplateResult } from 'lit';
import NileElement from '../internal/nile-element';
/**
 * Nile side-bar-header component.
 *
 * @tag nile-side-bar-header
 *
 * @attr background - Background treatment of the header ("default" | "transparent").
 *   Defaults to "default", which paints the sidebar surface color. Set to
 *   "transparent" to drop the background so whatever sits behind the header shows
 *   through.
 */
export declare class NileSideBarHeader extends NileElement {
    /**
     * Background treatment of the header. `default` keeps the sidebar surface
     * color; `transparent` removes it.
     */
    background: 'default' | 'transparent';
    /**
     * The styles for nile-side-bar-header
     * @remarks If you are extending this class you can extend the base styles with super. Eg `return [super(), myCustomStyles]`
     */
    static get styles(): CSSResultArray;
    /**
     * Render method
     * @slot This is a slot test
     */
    render(): TemplateResult;
}
export default NileSideBarHeader;
declare global {
    interface HTMLElementTagNameMap {
        'nile-side-bar-header': NileSideBarHeader;
    }
}