Add NodeVisitor1 to js_ast

pkg/compiler/lib/src/js/js.dart

 // Copyright (c) 2015, 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.
 
 library js;
 
 import 'package:js_ast/js_ast.dart';
 
 import '../common.dart';
 import '../options.dart';
@@ skipping 98 matching lines @@
       for (Node element in node.containedNodes) {
         element.accept(this);
       }
     } else if (node is ReferenceCountedAstNode) {
       node.markSeen(this);
     } else {
       super.visitNode(node);
     }
   }
 
-  void countTokens(Node node) => node.accept(this);
+  // TODO(28763): Remove `<dynamic>` which issue 28763 is fixed.

[sra1, 2017/07/05 20:52:13]

s/which/when/ ?

[Johnni Winther, 2017/07/06 07:41:35]

Done.

+  void countTokens(Node node) => node.accept<dynamic>(this);
 }
 
 abstract class ReferenceCountedAstNode implements Node {
   markSeen(TokenCounter visitor);
 }
 
 /// Represents the LiteralString resulting from unparsing [expression]. The
 /// actual unparsing is done on demand when requesting the [value] of this
 /// node.
 ///
@@ skipping 57 matching lines @@
   }
   if (node is PropertyAccess) {
     PropertyAccess access = node;
     if (access.receiver is InterpolatedExpression) {
       InterpolatedExpression hole = access.receiver;
       return hole.isPositional && hole.nameOrPosition == 0;
     }
   }
   return false;
 }