import { TreeViewItemId, TreeViewValidItem } from '@mui/x-tree-view/models';
import { TreeViewLazyLoadingPlugin } from "./TreeViewLazyLoadingPlugin.js";
export declare enum RequestStatus {
  QUEUED = 0,
  PENDING = 1,
  SETTLED = 2,
  UNKNOWN = 3,
}
/**
 * Fetches row children from the server with option to limit the number of concurrent requests
 * Determines the status of a request based on the enum `RequestStatus`
 * Uses `ParentId` to uniquely identify a request
 */
export declare class NestedDataManager {
  private pendingRequests;
  private queuedRequests;
  private settledRequests;
  private lazyLoadingPlugin;
  private maxConcurrentRequests;
  constructor(lazyLoadingPlugin: TreeViewLazyLoadingPlugin<TreeViewValidItem<any>>, maxConcurrentRequests?: number);
  private processQueue;
  queue: (ids: TreeViewItemId[]) => Promise<void>;
  setRequestSettled: (id: TreeViewItemId) => Promise<void>;
  clear: () => void;
  clearPendingRequest: (id: TreeViewItemId) => Promise<void>;
  getRequestStatus: (id: TreeViewItemId) => RequestStatus;
  getActiveRequestsCount: () => number;
}