import { FormItem } from '../item/form-item';
import { ValueItem } from '../item/value-item';
import { Option } from './option';
import { OptionGroup } from './option-group';
export interface OptionGroupItem<O extends Option<any>, V extends any> extends OptionGroup<O>, ValueItem<V> {
    optionItemMap: {
        [id: string]: FormItem;
    };
}
export declare function instanceOfOptionGroupItem(obj: any): obj is OptionGroupItem<any, any>;