declare const getParentTreeItem: (element: HTMLElement, container: HTMLElement) => HTMLElement | null;
declare const getFirstChildTreeItem: (folder: HTMLElement) => HTMLElement | null;
declare const getVisibleTreeItems: (container: HTMLElement) => HTMLElement[];
declare const calculatePaddingLeft: (level: number) => number;
declare const getTreeItemLabel: (element: HTMLElement) => string | null;
declare const getSiblingFolders: (element: HTMLElement, container: HTMLElement) => HTMLElement[];
declare const updateRovingTabindex: (container: HTMLElement, target: HTMLElement) => void;
export { getParentTreeItem, getFirstChildTreeItem, getVisibleTreeItems, calculatePaddingLeft, getTreeItemLabel, getSiblingFolders, updateRovingTabindex, };
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