Method stringIndexToDisplayWidth

src/utils/Cursor.ts:1233–1237

(text: string, index: number)

  // Convert string index to display width
  public stringIndexToDisplayWidth(text: string, index: number): number {
    if (index <= 0) return 0
    if (index >= text.length) return stringWidth(text)
    return stringWidth(text.substring(0, index))
  }

  // Convert display width to string index
  public displayWidthToStringIndex(text: string, targetWidth: number): number {