Function selectionBounds

src/ink/selection.ts:684–692

(s: SelectionState)

 * Returns null if no active selection.
 */
export function selectionBounds(s: SelectionState): {
  start: { col: number; row: number }
  end: { col: number; row: number }
} | null {
  if (!s.anchor || !s.focus) return null
  return comparePoints(s.anchor, s.focus) <= 0
    ? { start: s.anchor, end: s.focus }
    : { start: s.focus, end: s.anchor }
}

/**
 * Check if a cell at (col, row) is within the current selection range.