Function getFirstElement

packages/react/src/TreeView/useRovingTabIndex.ts:178–182

(element: HTMLElement)

}

export function getFirstElement(element: HTMLElement): HTMLElement | undefined {
  const root = element.closest('[role=tree]')
  const first = root?.querySelector('[role=treeitem]')
  return first instanceof HTMLElement ? first : undefined
}

export function getLastElement(element: HTMLElement): HTMLElement | undefined {
  const root = element.closest('[role=tree]')