import { RefObject } from '@mui/x-internals/types';
import { GridRowId } from '@mui/x-data-grid';
import { GridPrivateApiPro } from '../../../models/gridApiPro';
export declare const runIfServerMode: (modeProp: "server" | "client", fn: Function) => () => void;
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 `GridRowId` to uniquely identify a request
 */
export declare class NestedDataManager {
    private pendingRequests;
    private queuedRequests;
    private settledRequests;
    private api;
    private maxConcurrentRequests;
    constructor(privateApiRef: RefObject<GridPrivateApiPro>, maxConcurrentRequests?: number);
    private processQueue;
    queue: (ids: GridRowId[]) => Promise<void>;
    setRequestSettled: (id: GridRowId) => void;
    clear: () => void;
    clearPendingRequest: (id: GridRowId) => void;
    getRequestStatus: (id: GridRowId) => RequestStatus;
    getActiveRequestsCount: () => number;
}