Switch Js to JS

pkg/compiler/lib/src/patch_parser.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * This library contains the infrastructure to parse and integrate patch files.
  *
  * Three types of elements can be patched: [LibraryElement], [ClassElement],
  * [FunctionElement]. Patches are introduced in patch libraries which are loaded
  * together with the corresponding origin library. Which libraries that are
@@ skipping 447 matching lines @@
                 MetadataAnnotation annotation,
                 ConstantValue constant) {
     DartType annotationType = constant.getType(compiler.coreTypes);
     if (annotationType.element != compiler.nativeAnnotationClass) {
       DiagnosticReporter reporter = compiler.reporter;
       reporter.internalError(annotation, 'Invalid @Native(...) annotation.');
     }
   }
 }
 
-/// Annotation handler for pre-resolution detection of `@Js(...)`
+/// Annotation handler for pre-resolution detection of `@JS(...)`
 /// annotations.
 class JsInteropAnnotationHandler implements EagerAnnotationHandler<bool> {
   const JsInteropAnnotationHandler();
 
   bool hasJsNameAnnotation(MetadataAnnotation annotation) =>
-      annotation.beginToken != null && annotation.beginToken.next.value == 'Js';
+      annotation.beginToken != null && annotation.beginToken.next.value == 'JS';
 
   bool apply(Compiler compiler,
              Element element,
              MetadataAnnotation annotation) {
     bool hasJsInterop = hasJsNameAnnotation(annotation);
     if (hasJsInterop) {
       element.markAsJsInterop();
     }
     // Due to semantics of apply in the baseclass we have to return null to
     // indicate that no match was found.
     return hasJsInterop ? true : null;
   }
 
   @override
   void validate(Compiler compiler,
                 Element element,
                 MetadataAnnotation annotation,
                 ConstantValue constant) {
     JavaScriptBackend backend = compiler.backend;
     if (constant.getType(compiler.coreTypes).element !=
         backend.jsAnnotationClass) {
-      compiler.reporter.internalError(annotation, 'Invalid @Js(...) annotation.');
+      compiler.reporter.internalError(annotation, 'Invalid @JS(...) annotation.');
     }
   }
 }
 
 /// Annotation handler for pre-resolution detection of `@patch` annotations.
 class PatchAnnotationHandler implements EagerAnnotationHandler<PatchVersion> {
   const PatchAnnotationHandler();
 
   PatchVersion getPatchVersion(MetadataAnnotation annotation) {
     if (annotation.beginToken != null) {
@@ skipping 171 matching lines @@
 
 class PatchVersion {
   final String tag;
 
   const PatchVersion(this.tag);
 
   bool isActive(String patchTag) => tag == null || tag == patchTag;
 
   String toString() => 'PatchVersion($tag)';
 }