dart2js: The name of a library without a library declaration is the empty string.

sdk/lib/_internal/compiler/implementation/js_emitter/code_emitter_task.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.
 
 part of dart2js.js_emitter;
 
 /**
  * Generates the code for all used classes in the program. Static fields (even
  * in classes) are ignored, since they can be treated as non-class elements.
  *
@@ skipping 1300 matching lines @@
           if (uri.scheme == 'file' && compiler.sourceMapUri != null) {
             // TODO(ahe): It is a hack to use compiler.sourceMapUri
             // here.  It should be relative to the main JavaScript
             // output file.
             uri = relativize(
                 compiler.sourceMapUri, library.canonicalUri, false);
           }
           if (buffer != null) {
             var metadata = metadataEmitter.buildMetadataFunction(library);
             mainBuffer
-                ..write('["${library.getLibraryOrScriptName()}",$_')
+                ..write('["${library.getLibraryName()}",$_')
                 ..write('"${uri}",$_')
                 ..write(metadata == null
                         ? "" : jsAst.prettyPrint(metadata, compiler))
                 ..write(',$_')
                 ..write(namer.globalObjectFor(library))
                 ..write(',$_')
                 ..write('{$n')
                 ..addBuffer(buffer)
                 ..write('}');
             if (library == compiler.mainApp) {
               mainBuffer.write(',${n}1');
             }
             mainBuffer.write('],$n');
           }
           buffer = buffers[1];
           if (buffer != null) {
             deferredLibraries
-                ..write('["${library.getLibraryOrScriptName()}",$_')
+                ..write('["${library.getLibraryName()}",$_')
                 ..write('"${uri}",$_')
                 ..write('[],$_')
                 ..write(namer.globalObjectFor(library))
                 ..write(',$_')
                 ..write('{$n')
                 ..addBuffer(buffer)
                 ..write('}],$n');
           }
           elementBuffers[library] = const [];
         }
@@ skipping 234 matching lines @@
   }
 
   bool isDeferred(Element element) {
     return compiler.deferredLoadTask.isDeferred(element);
   }
 
   bool get areAnyElementsDeferred {
     return compiler.deferredLoadTask.areAnyElementsDeferred;
   }
 }