Spelling a

sdk/lib/js/dartium/js_dartium.dart

 // Copyright (c) 2013, 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.
 
 /**
  * Support for interoperating with JavaScript.
  *
  * This library provides access to JavaScript objects from Dart, allowing
  * Dart code to get and set properties, and call methods of JavaScript objects
  * and invoke JavaScript functions. The library takes care of converting
@@ skipping 230 matching lines @@
 }
 
 String _escapeString(String str) {
   StringBuffer output = new StringBuffer();
   new _StringLiteralEscape(output)..writeStringLiteral(str);
   return output.toString();
 }
 
 /// A collection of methods where all methods have the same name.
 /// This class is intended to optimize whether a specific invocation is
-/// appropritate for at least some of the methods in the collection.
+/// appropriate for at least some of the methods in the collection.
 class _DeclarationSet {
   _DeclarationSet() : _members = <mirrors.DeclarationMirror>[];
 
   static bool _checkType(obj, mirrors.TypeMirror type) {
     if (obj == null) return true;
     return mirrors.reflectType(obj.runtimeType).isSubtypeOf(type);
   }
 
   /// Returns whether the return [value] has a type is consistent with the
   /// return type from at least one of the members matching the DeclarationSet.
@@ skipping 1432 matching lines @@
   } else {
     var ret = _interopCaptureThisExpando[f];
     if (ret == null) {
       // TODO(jacobr): we could optimize this.
       ret = JSFunction._createWithThis(f);
       _interopCaptureThisExpando[f] = ret;
     }
     return ret;
   }
 }