export interface TreeNodeType {
    groupKey: string;
    subGroups?: TreeNodeType[];
    data?: any[];
    isClosed?: boolean;
    extras?: any;
    iconClass?: string;
    textClass?: string;
}
export declare function findNode(rootNode: TreeNodeType, paths: string[], create?: boolean): TreeNodeType;
export declare function toTreeData(data: any[], mapper: (n: TreeNodeType, p: any, i: number, arr: any[]) => string[]): TreeNodeType;