Method insert

packages/react-stately/src/data/useTreeData.ts:62–62

* Inserts an item into a parent node as a child. * * @param parentKey - The key of the parent item to insert into. `null` for the root. * @param index - The index within the parent to insert into. * @param value - The value to insert.

(parentKey: Key | null, index: number, ...values: T[])

   * @param value - The value to insert.
   */
  insert(parentKey: Key | null, index: number, ...values: T[]): void;

  /**
   * Inserts items into the list before the item at the given key.