padVisibleRight function
Pads styled text to width based on visible character length.
Unlike padRight, this accounts for ANSI escape codes when calculating how much padding is needed.
Example:
padVisibleRight('\x1B[32mHi\x1B[0m', 5); // '\x1B[32mHi\x1B[0m '
Implementation
String padVisibleRight(String text, int width) {
final visible = visibleLength(text);
if (visible >= width) return text;
return text + ' ' * (width - visible);
}