@mui/x-tree-view/internals/plugins/lazyLoading/selectors.d.mts

The community edition of the MUI X Tree View components.

import type { TreeViewItemId } from "../../../models/index.mjs";
import type { RichTreeViewState } from "../../RichTreeViewStore/index.mjs";
export declare const lazyLoadingSelectors: {
  /**
   * Checks if the lazy loaded state is empty.
   */
  isEmpty: (state: RichTreeViewState<any, any>) => boolean;
  /**
   * Checks whether an item is loading.
   */
  isItemLoading: (state: RichTreeViewState<any, any>, itemId: TreeViewItemId | null) => boolean;
  /**
   * Gets the expected children count of an item currently loading its children.
   * Returns `-1` when the count is unknown or the item is not loading.
   */
  itemLoadingChildrenCount: (state: RichTreeViewState<any, any>, itemId: TreeViewItemId | null) => number;
  /**
   * Checks whether an item has errors.
   */
  itemHasError: (state: RichTreeViewState<any, any>, itemId: TreeViewItemId | null) => boolean;
  /**
   * Get an item error.
   */
  itemError: (state: RichTreeViewState<any, any>, itemId: TreeViewItemId | null) => Error | null | undefined;
};