rename fasta.Token.value --> lexeme

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

Index: pkg/compiler/lib/src/js/rewrite_async.dart
diff --git a/pkg/compiler/lib/src/js/rewrite_async.dart b/pkg/compiler/lib/src/js/rewrite_async.dart
index bc056560600d76930f657428ae34bb6dbc5f9c2c..6fe5c733abb02d47c860ad3920979d348aaedf62 100644
--- a/pkg/compiler/lib/src/js/rewrite_async.dart
+++ b/pkg/compiler/lib/src/js/rewrite_async.dart
@@ -1827,8 +1827,8 @@ class SyncStarRewriter extends AsyncRewriterBase {
 
   /// Translates a yield/yield* in an sync*.
   ///
-  /// `yield` in a sync* function just returns [value].
-  /// `yield*` wraps [value] in a [yieldStarExpression] and returns it.
+  /// `yield` in a sync* function just returns [lexeme].
+  /// `yield*` wraps [lexeme] in a [yieldStarExpression] and returns it.

[ahe, 2017/03/10 07:26:11]

I think this isn't related. But there's an opportunity to be a good citizen
here: I think they meant [expression] in both cases.

[danrubel, 2017/03/11 22:10:38]

Reverted.

   @override
   void addYield(js.DartYield node, js.Expression expression) {
     if (node.hasStar) {