import { NestedTreeControl } from '@angular/cdk/tree';
import { OnChanges, SimpleChanges } from '@angular/core';
import { MatTreeNestedDataSource } from '@angular/material/tree';
export interface TreeNode {
    name: string;
    children?: TreeNode[];
}
export declare class TreeComponent implements OnChanges {
    data: TreeNode[];
    closedIcon: string;
    openedIcon: string;
    nodeIcon: string;
    dataSource: MatTreeNestedDataSource<TreeNode>;
    treeControl: NestedTreeControl<TreeNode>;
    hasChild: (_: number, node: TreeNode) => boolean;
    ngOnChanges(changes: SimpleChanges): void;
}