import { _ModuleSupport } from 'ag-charts-community';
type TransactionCollectionState<T> = _ModuleSupport.TransactionCollectionState<T>;
declare const DataSet: typeof _ModuleSupport.DataSet;
/**
 * DataSet subclass that understands hierarchical/nested data (e.g. treemap with `childrenKey`).
 * Extends ID-based transaction logic to find, update, and remove items nested within children arrays.
 */
export declare class HierarchyDataSet<T = unknown> extends DataSet<T> {
    private readonly childrenKey;
    constructor(data: T[], dataIdKey: string | undefined, childrenKey: string);
    /**
     * After the base commit, remove any root-level items whose IDs already exist
     * nested in the tree. This handles the case where the user manually adds an item
     * to a parent's children array and also calls applyTransaction({ add: [item] }),
     * which would otherwise duplicate the item at root level.
     */
    commitPendingTransactions(): boolean;
    private removeNestedDuplicatesFromRoot;
    private collectNestedIds;
    /** Recursively indexes all items (root and nested) by ID, mapping each to the root ancestor's index. */
    protected getIdToIndexMap(): Map<string | number, number>;
    private indexItemRecursively;
    /** Handles updates for both root-level and nested items. */
    protected collectUpdatedOriginalIndicesById(toUpdate: Map<string | number, T>, state: TransactionCollectionState<T>): void;
    /** Handles removals for both root-level and nested items. */
    protected applyRemovalsById(remove: T[], state: TransactionCollectionState<T>): void;
    /** Walks the tree to find and replace a nested item by ID. Returns true if found. */
    private replaceNestedItem;
    /** Walks the tree to find and splice a nested item by ID. Returns true if found. */
    private removeNestedItem;
    /** Removes items from groups by matching their ID values. */
    private removeFromGroupsByIdForHierarchy;
}
export {};