Index: tools/dom/src/CssClassSet.dart |
diff --git a/tools/dom/src/CssClassSet.dart b/tools/dom/src/CssClassSet.dart |
index 29aa8602dd2cededcb19b7c9811b8aba4dd60994..30c0f26066a79e27e33934012f7dba9961da33ee 100644 |
--- a/tools/dom/src/CssClassSet.dart |
+++ b/tools/dom/src/CssClassSet.dart |
@@ -42,7 +42,7 @@ abstract class CssClassSet implements Set<String> { |
readClasses().forEach(f); |
} |
- String join([String separator]) => readClasses().join(separator); |
+ String join([String separator = ""]) => readClasses().join(separator); |
Iterable map(f(String element)) => readClasses().map(f); |