unescapeChar function

int? unescapeChar(
  1. String input
)

Implementation

int? unescapeChar(String input) {
  String unescaped = unescape(input);
  if (unescaped.runes.length > 1) throw FormatException("Found mutliple characters ${unescaped.runes.length}!");
  if (unescaped.runes.isEmpty) return null;
  return unescaped.runes.elementAt(0);
}