/**
 * Low-level collection item.
 * This is the most basic type of object
 * that can be passed to the collection composer.
 */
export interface CollectionItem {
    /**
     * Additional keys which are forcefully injected into the item
     * will be allowed for flexibility, but will return an `unknown` type.
     */
    [key: string]: unknown;
    /**
     * Child items collection.
     * Used for nested data structures.
     * Override this property in sub interfaces with their own type to ensure nested type checking.
     * For example, `MyCollectionItem extends CollectionItem { items?: MyCollectionItem[]; }`
     */
    items?: CollectionItem[];
}