import { LitElement } from 'lit';
import { AbstractConstructor } from './constructor.js';
import { SbbFormAssociatedMixinType } from './form-associated-mixin.js';

export declare class SbbRequiredMixinType {
    set required(value: boolean);
    get required(): boolean;
    protected isRequiredExternally(): boolean;
}
/**
 * Enhance your component with a required property.
 */
export declare const SbbRequiredMixin: <T extends AbstractConstructor<LitElement & SbbFormAssociatedMixinType>>(superClass: T) => AbstractConstructor<SbbRequiredMixinType> & T;
//# sourceMappingURL=required-mixin.d.ts.map