import { Item } from '../baseItem.js';
import { ItemSettings } from '../itemSettings.js';
import { ItemType } from '../itemType.js';
export type FolderItemType<S = ItemSettings> = {
    type: typeof ItemType.FOLDER;
    extra: FolderItemExtra;
} & Item<S>;
/**
 * Folder Extra
 */
export type FolderItemExtraProperties = {
    isCapsule?: boolean;
};
export interface FolderItemExtra {
    [ItemType.FOLDER]: FolderItemExtraProperties;
}
export declare const getFolderExtra: <U extends FolderItemExtra>(extra: U) => U[typeof ItemType.FOLDER];
export declare const buildFolderExtra: (extra: FolderItemExtraProperties) => FolderItemExtra;