fix for issue "Error Range start 5 is out of text of length 1 #136"

CHANGELOG.md

@@ -1,6 +1,6 @@
 ## [2.12.1]
+- Fixed a bug with incorrect decimal point detection when mantissa length is 0
 - Fixed https://github.com/caseyryan/flutter_multi_formatter/issues/136 Error Range start 5 is out of text of length 1 #136
-
 ## [2.12.0]
 - Updated SKD restrictions
 - formatAsCardNumber now also tries to format invalid cards

lib/formatters/formatter_utils.dart

@@ -537,8 +537,8 @@ String toCurrencyString(
     mantissaSeparator: mSeparator,
     mantissaLength: mantissaLength,
   );
-  String? fractionalSeparator = _detectFractionSeparator(value);
-  // mantissaLength > 0 ? _detectFractionSeparator(value) : null;
+  String? fractionalSeparator =
+      mantissaLength > 0 ? _detectFractionSeparator(value) : null;
 
   var sb = StringBuffer();
   bool addedMantissaSeparator = false;