Function select

packages/session-ui/src/components/file.tsx:431–436

(range: SelectedLineRange | null)

  onLineNumberSelectionEnd?: (selection: SelectedLineRange | null) => void
}) {
  const select = (range: SelectedLineRange | null) => {
    if (!opts.normalize) return range
    const next = opts.normalize(range)
    if (next !== undefined) return next
    return range
  }

  return {
    onLineSelected: (range: SelectedLineRange | null) => {