String substituteVars()

in dartfn/lib/src/stagehand/common.dart [71:85]

• 13 lines of code
• 3 McCabe index (conditional complexity)

String substituteVars(String str, Map<String, String> vars) {
  if (vars.keys.any((element) => element.contains(_nonValidSubstituteRegExp))) {
    throw ArgumentError('vars.keys can only contain letters.');
  }

  return str.replaceAllMapped(_substituteRegExp, (match) {
    final item = vars[match[1]];

    if (item == null) {
      return match[0]!;
    } else {
      return item;
    }
  });
}