import { CSSResultGroup, PropertyValues, TemplateResult, LitElement } from 'lit';

export type SbbTitleLevel = '1' | '2' | '3' | '4' | '5' | '6';
declare const SbbTitleBase_base: import('../core/mixins.js').AbstractConstructor<import('../core/mixins.js').SbbNegativeMixinType> & typeof LitElement;
/**
 * It displays a title with a heading role.
 *
 * @slot - Use the unnamed slot to display the title.
 */
export declare abstract class SbbTitleBase extends SbbTitleBase_base {
    static styles: CSSResultGroup;
    /** Title level */
    level: SbbTitleLevel;
    /** Visual level for the title. Optional, if not set, the value of level will be used. */
    visualLevel?: SbbTitleLevel;
    /**
     * Sometimes we need a title in the markup to present a proper hierarchy
     * to the screen readers while we do not want to let that title appear
     * visually. In this case we set visuallyHidden to true.
     */
    visuallyHidden?: boolean;
    protected willUpdate(changedProperties: PropertyValues<this>): void;
    protected render(): TemplateResult;
}
export {};
//# sourceMappingURL=title-base.d.ts.map