Ignore files generated by the Editor.

sdk/lib/_internal/pub/test/serve/does_not_watch_compiled_js_files_test.dart

Index: sdk/lib/_internal/pub/test/serve/does_not_watch_compiled_js_files_test.dart
diff --git a/sdk/lib/_internal/pub/test/serve/does_not_watch_compiled_js_files_test.dart b/sdk/lib/_internal/pub/test/serve/does_not_watch_compiled_js_files_test.dart
index 74598695d1dc202092521488afbdd2c0f881fea5..4d620f639f47418bf239183fb5a0973ac2e2be7c 100644
--- a/sdk/lib/_internal/pub/test/serve/does_not_watch_compiled_js_files_test.dart
+++ b/sdk/lib/_internal/pub/test/serve/does_not_watch_compiled_js_files_test.dart
@@ -26,12 +26,16 @@ main() {
       d.dir("web", [
         d.file('file.dart', 'void main() => print("hello");'),
         d.file("other.dart.js", "should be ignored"),
+        d.file("other.dart.js.map", "should be ignored"),
+        d.file("other.dart.precompiled.js", "should be ignored")
       ])
     ]).create();
 
     waitForBuildSuccess();
     requestShouldSucceed("file.dart", 'void main() => print("hello");');
     requestShould404("other.dart.js");
+    requestShould404("other.dart.js.map");
+    requestShould404("other.dart.precompiled.js");
     endPubServe();
   });
 }