Update regExpUtils.js

harness/regExpUtils.js

@@ -89,6 +89,12 @@ function testPropertyOfStrings(args) {
   }
 }
 
+// The exact same logic can be used to test extended character classes
+// as enabled through the RegExp `v` flag. This is useful to test not
+// just standalone properties of strings, but also string literals, and
+// set operations.
+const testExtendedCharacterClass = testPropertyOfStrings;
+
 // Returns a function that validates a RegExp match result.
 //
 // Example: