Function truncateToWidth

src/utils/truncate.ts:63–75

(text: string, maxWidth: number)

 * Appends '…' when truncation occurs.
 */
export function truncateToWidth(text: string, maxWidth: number): string {
  if (stringWidth(text) <= maxWidth) return text
  if (maxWidth <= 1) return '…'
  let width = 0
  let result = ''
  for (const { segment } of getGraphemeSegmenter().segment(text)) {
    const segWidth = stringWidth(segment)
    if (width + segWidth > maxWidth - 1) break
    result += segment
    width += segWidth
  }
  return result + '…'
}

/**
 * Truncates from the start of a string, keeping the tail end.