fixed ws

pkgs/yaml/lib/src/null_span.dart

diff --git a/pkgs/yaml/lib/src/null_span.dart b/pkgs/yaml/lib/src/null_span.dart
index dd868b8..64b3551 100644
--- a/pkgs/yaml/lib/src/null_span.dart
+++ b/pkgs/yaml/lib/src/null_span.dart
@@ -12,7 +12,6 @@
 class NullSpan extends SourceSpanMixin {
   @override
   final SourceLocation start;
-
   @override
   SourceLocation get end => start;
   @override

pkgs/yaml/lib/src/token.dart

diff --git a/pkgs/yaml/lib/src/token.dart b/pkgs/yaml/lib/src/token.dart
index 7dbfb3b..4f4172f 100644
--- a/pkgs/yaml/lib/src/token.dart
+++ b/pkgs/yaml/lib/src/token.dart
@@ -127,21 +127,26 @@
 enum TokenType {
   streamStart,
   streamEnd,
+
   versionDirective,
   tagDirective,
   documentStart,
   documentEnd,
+
   blockSequenceStart,
   blockMappingStart,
   blockEnd,
+
   flowSequenceStart,
   flowSequenceEnd,
   flowMappingStart,
   flowMappingEnd,
+
   blockEntry,
   flowEntry,
   key,
   value,
+
   alias,
   anchor,
   tag,