import { CSSResultGroup, PropertyValues, TemplateResult } from 'lit';
import { SbbAutocompleteBaseElement } from '../../autocomplete.ts';
import { SbbElement } from '../../core/base-elements.ts';
import { SbbOptionBaseElement } from '../option/option-base-element.ts';
declare const SbbOptgroupBaseElement_base: import('../../core/mixins.ts').AbstractConstructor<import('../../core/mixins.ts').SbbDisabledMixinType> & typeof SbbElement;
export declare abstract class SbbOptgroupBaseElement extends SbbOptgroupBaseElement_base {
    static readonly role: string | null;
    static styles: CSSResultGroup;
    /** Option group label. */
    accessor label: string;
    private accessor _inertAriaGroups;
    protected abstract get options(): SbbOptionBaseElement[];
    constructor();
    connectedCallback(): void;
    protected willUpdate(changedProperties: PropertyValues<this>): void;
    protected abstract getAutocompleteParent(): SbbAutocompleteBaseElement | null;
    private _handleSlotchange;
    private _updateAriaLabel;
    private _highlightOptions;
    protected render(): TemplateResult;
}
export {};
//# sourceMappingURL=optgroup-base-element.d.ts.map