"Reverting 14829-14832"

pkg/intl/lib/src/date_format_helpers.dart

Index: pkg/intl/lib/src/date_format_helpers.dart
diff --git a/pkg/intl/lib/src/date_format_helpers.dart b/pkg/intl/lib/src/date_format_helpers.dart
index e47c2cb7bda7ef31ce9c52ea330d5b7ba5facf33..7def10b5984ab7fe8d4d3da6dd0b149cc5289e05 100644
--- a/pkg/intl/lib/src/date_format_helpers.dart
+++ b/pkg/intl/lib/src/date_format_helpers.dart
@@ -133,7 +133,7 @@ class _Stream {
    * Assuming that the contents are characters, read as many digits as we
    * can see and then return the corresponding integer. Advance the stream.
    */
-  var digitMatcher = new RegExp(r'\d+');
+  var digitMatcher = const RegExp(r'\d+');
   int nextInteger() {
     var string = digitMatcher.stringMatch(rest());
     if (string == null || string.isEmpty) return null;