diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayAccess.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayAccess.java
index b3585dc038b..5d001275b54 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayAccess.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayAccess.java
@@ -65,6 +65,6 @@ public final class JsArrayAccess extends JsExpressionImpl {
         JsExpression arrayCopy = AstUtil.deepCopy(arrayExpression);
         JsExpression indexCopy = AstUtil.deepCopy(indexExpression);
 
-        return new JsArrayAccess(arrayCopy, indexCopy);
+        return new JsArrayAccess(arrayCopy, indexCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java
index 5e3e4cfaa6b..9ac54a51333 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java
@@ -49,6 +49,6 @@ public final class JsArrayLiteral extends JsLiteral {
     @NotNull
     @Override
     public JsArrayLiteral deepCopy() {
-        return new JsArrayLiteral(AstUtil.deepCopy(expressions));
+        return new JsArrayLiteral(AstUtil.deepCopy(expressions)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBinaryOperation.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBinaryOperation.java
index 959e6022882..3c3c3fae0a4 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBinaryOperation.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBinaryOperation.java
@@ -75,6 +75,6 @@ public final class JsBinaryOperation extends JsExpressionImpl {
     @NotNull
     @Override
     public JsExpression deepCopy() {
-        return new JsBinaryOperation(op, AstUtil.deepCopy(arg1), AstUtil.deepCopy(arg2));
+        return new JsBinaryOperation(op, AstUtil.deepCopy(arg1), AstUtil.deepCopy(arg2)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBlock.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBlock.java
index e5463b360b7..fac9f4fdf54 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBlock.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBlock.java
@@ -68,6 +68,6 @@ public class JsBlock extends SourceInfoAwareJsNode implements JsStatement {
     @NotNull
     @Override
     public JsBlock deepCopy() {
-        return new JsBlock(AstUtil.deepCopy(statements));
+        return new JsBlock(AstUtil.deepCopy(statements)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBreak.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBreak.java
index ab311418aa8..a2cb25a28a6 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBreak.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsBreak.java
@@ -38,6 +38,6 @@ public final class JsBreak extends JsContinue {
     @NotNull
     @Override
     public JsBreak deepCopy() {
-        return new JsBreak(AstUtil.deepCopy(label));
+        return new JsBreak(AstUtil.deepCopy(label)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCase.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCase.java
index 03daaec4e3a..05ec9a167b7 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCase.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCase.java
@@ -52,6 +52,6 @@ public final class JsCase extends JsSwitchMember {
         caseCopy.caseExpression = AstUtil.deepCopy(caseExpression);
         caseCopy.statements.addAll(AstUtil.deepCopy(statements));
 
-        return caseCopy;
+        return caseCopy.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCatch.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCatch.java
index ba5e1bdbacc..4cd48e11a02 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCatch.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsCatch.java
@@ -84,7 +84,7 @@ public class JsCatch extends SourceInfoAwareJsNode implements HasCondition {
         JsExpression conditionCopy = AstUtil.deepCopy(condition);
         JsParameter paramCopy = AstUtil.deepCopy(param);
 
-        return new JsCatch(scopeCopy, bodyCopy, conditionCopy, paramCopy);
+        return new JsCatch(scopeCopy, bodyCopy, conditionCopy, paramCopy).withMetadataFrom(this);
     }
 
     private JsCatch(JsCatchScope scope, JsBlock body, JsExpression condition, JsParameter param) {
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsConditional.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsConditional.java
index 3f412125caa..b99b099181e 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsConditional.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsConditional.java
@@ -74,6 +74,6 @@ public final class JsConditional extends JsExpressionImpl {
         JsExpression thenCopy = AstUtil.deepCopy(thenExpression);
         JsExpression elseCopy = AstUtil.deepCopy(elseExpression);
 
-        return new JsConditional(testCopy, thenCopy, elseCopy);
+        return new JsConditional(testCopy, thenCopy, elseCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsContinue.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsContinue.java
index 32bf5ee934a..d56d77a3a81 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsContinue.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsContinue.java
@@ -52,6 +52,6 @@ public class JsContinue extends SourceInfoAwareJsNode implements JsStatement {
     public JsContinue deepCopy() {
         if (label == null) return new JsContinue();
 
-        return new JsContinue(AstUtil.deepCopy(label));
+        return new JsContinue(AstUtil.deepCopy(label)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDefault.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDefault.java
index 1cf13da1d6f..75e169be591 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDefault.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDefault.java
@@ -29,6 +29,6 @@ public final class JsDefault extends JsSwitchMember {
     public JsDefault deepCopy() {
         JsDefault defaultCopy = new JsDefault();
         defaultCopy.statements.addAll(AstUtil.deepCopy(statements));
-        return defaultCopy;
+        return defaultCopy.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDoWhile.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDoWhile.java
index 24d31bf7bfe..8277bf27eb3 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDoWhile.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDoWhile.java
@@ -38,6 +38,6 @@ public class JsDoWhile extends JsWhile {
         JsExpression conditionCopy = AstUtil.deepCopy(condition);
         JsStatement bodyCopy = AstUtil.deepCopy(body);
 
-        return new JsDoWhile(conditionCopy, bodyCopy);
+        return new JsDoWhile(conditionCopy, bodyCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDocComment.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDocComment.java
index 9b895a27108..55cd155f41b 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDocComment.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsDocComment.java
@@ -36,6 +36,6 @@ public class JsDocComment extends JsExpressionImpl {
     @NotNull
     @Override
     public JsDocComment deepCopy() {
-        return new JsDocComment(tags);
+        return new JsDocComment(tags).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsExpressionStatement.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsExpressionStatement.java
index 0d5bbdebb44..74d78768e2b 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsExpressionStatement.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsExpressionStatement.java
@@ -55,6 +55,6 @@ public final class JsExpressionStatement extends AbstractNode implements JsState
     @NotNull
     @Override
     public JsExpressionStatement deepCopy() {
-        return new JsExpressionStatement(expression.deepCopy());
+        return new JsExpressionStatement(expression.deepCopy()).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFor.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFor.java
index 638917e933d..f526fd4e5fb 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFor.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFor.java
@@ -129,16 +129,13 @@ public class JsFor extends SourceInfoAwareJsNode implements JsStatement {
         JsExpression conditionCopy = AstUtil.deepCopy(condition);
         JsExpression incrementalExprCopy = AstUtil.deepCopy(incrementExpression);
 
+        JsFor result;
         if (initVars != null) {
-            return new JsFor(initVars.deepCopy(),
-                             conditionCopy,
-                             incrementalExprCopy,
-                             bodyCopy);
+            result = new JsFor(initVars.deepCopy(), conditionCopy, incrementalExprCopy, bodyCopy);
         } else {
-            return new JsFor(initExpression.deepCopy(),
-                             conditionCopy,
-                             incrementExpression,
-                             bodyCopy);
+            result = new JsFor(initExpression.deepCopy(), conditionCopy, incrementExpression, bodyCopy);
         }
+
+        return result.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsForIn.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsForIn.java
index 2f50cb1da1a..982fda96be0 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsForIn.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsForIn.java
@@ -92,6 +92,6 @@ public class JsForIn extends SourceInfoAwareJsNode implements JsStatement {
         JsExpression iterCopy = AstUtil.deepCopy(iterExpression);
         JsExpression objectCopy = AstUtil.deepCopy(objectExpression);
 
-        return new JsForIn(iterVarName, iterCopy, objectCopy, bodyCopy);
+        return new JsForIn(iterVarName, iterCopy, objectCopy, bodyCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFunction.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFunction.java
index abf010aba31..525d93236ec 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFunction.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsFunction.java
@@ -108,6 +108,6 @@ public final class JsFunction extends JsLiteral implements HasName {
         functionCopy.params = AstUtil.deepCopy(params);
         functionCopy.isLocal = isLocal;
 
-        return functionCopy;
+        return functionCopy.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsGlobalBlock.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsGlobalBlock.java
index 0a408c28758..9c9fc0dfd25 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsGlobalBlock.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsGlobalBlock.java
@@ -28,6 +28,6 @@ public class JsGlobalBlock extends JsBlock {
         JsGlobalBlock globalBlockCopy = new JsGlobalBlock();
         List<JsStatement> statementscopy = AstUtil.deepCopy(getStatements());
         globalBlockCopy.getStatements().addAll(statementscopy);
-        return globalBlockCopy;
+        return globalBlockCopy.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsIf.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsIf.java
index 1c0431c560b..fe3ece611af 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsIf.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsIf.java
@@ -86,6 +86,6 @@ public final class JsIf extends SourceInfoAwareJsNode implements JsStatement {
         JsStatement thenCopy = AstUtil.deepCopy(thenStatement);
         JsStatement elseCopy = AstUtil.deepCopy(elseStatement);
 
-        return new JsIf(ifCopy, thenCopy, elseCopy);
+        return new JsIf(ifCopy, thenCopy, elseCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsInvocation.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsInvocation.java
index cd581c79593..75878323221 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsInvocation.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsInvocation.java
@@ -87,6 +87,6 @@ public final class JsInvocation extends JsExpressionImpl.JsExpressionHasArgument
         List<JsExpression> argumentsCopy = AstUtil.deepCopy(arguments);
         JsInvocation copy = new JsInvocation(qualifierCopy, argumentsCopy);
         copy.setInlineStrategy(inlineStrategy);
-        return copy;
+        return copy.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsLabel.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsLabel.java
index 7af18b648f2..7241fbe24ac 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsLabel.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsLabel.java
@@ -64,6 +64,6 @@ public class JsLabel extends SourceInfoAwareJsNode implements JsStatement, HasNa
     @NotNull
     @Override
     public JsLabel deepCopy() {
-        return new JsLabel(label, AstUtil.deepCopy(statement.deepCopy()));
+        return new JsLabel(label, AstUtil.deepCopy(statement.deepCopy())).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNameRef.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNameRef.java
index e07414cccbe..c2a90cf899c 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNameRef.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNameRef.java
@@ -99,6 +99,6 @@ public final class JsNameRef extends JsExpressionImpl implements HasName {
 
         if (name != null) return new JsNameRef(name, qualifierCopy);
 
-        return new JsNameRef(ident, qualifierCopy);
+        return new JsNameRef(ident, qualifierCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNew.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNew.java
index 2722a451281..f4c19786b5f 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNew.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsNew.java
@@ -51,6 +51,6 @@ public final class JsNew extends JsExpressionImpl.JsExpressionHasArguments {
     public JsNew deepCopy() {
         JsExpression constructorCopy = AstUtil.deepCopy(constructorExpression);
         List<JsExpression> argumentsCopy = AstUtil.deepCopy(arguments);
-        return new JsNew(constructorCopy, argumentsCopy);
+        return new JsNew(constructorCopy, argumentsCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsObjectLiteral.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsObjectLiteral.java
index 8efda04a24a..dea6c586e56 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsObjectLiteral.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsObjectLiteral.java
@@ -61,6 +61,6 @@ public final class JsObjectLiteral extends JsLiteral {
     @NotNull
     @Override
     public JsObjectLiteral deepCopy() {
-        return new JsObjectLiteral(AstUtil.deepCopy(properties), multiline);
+        return new JsObjectLiteral(AstUtil.deepCopy(properties), multiline).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsParameter.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsParameter.java
index 0b7859b82f3..300ffd456fc 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsParameter.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsParameter.java
@@ -55,6 +55,6 @@ public final class JsParameter extends SourceInfoAwareJsNode implements HasName
     public JsParameter deepCopy() {
         JsParameter parameter = new JsParameter(name);
         parameter.setHasDefaultValue(hasDefaultValue);
-        return parameter;
+        return parameter.withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPostfixOperation.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPostfixOperation.java
index 39bdc3d7f66..b7d866b971b 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPostfixOperation.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPostfixOperation.java
@@ -32,6 +32,6 @@ public final class JsPostfixOperation extends JsUnaryOperation {
     @NotNull
     @Override
     public JsPostfixOperation deepCopy() {
-        return new JsPostfixOperation(getOperator(), AstUtil.deepCopy(getArg()));
+        return new JsPostfixOperation(getOperator(), AstUtil.deepCopy(getArg())).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPrefixOperation.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPrefixOperation.java
index 0cce595ff4b..1378c756e6a 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPrefixOperation.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPrefixOperation.java
@@ -32,6 +32,6 @@ public final class JsPrefixOperation extends JsUnaryOperation {
     @NotNull
     @Override
     public JsPrefixOperation deepCopy() {
-        return new JsPrefixOperation(getOperator(), AstUtil.deepCopy(getArg()));
+        return new JsPrefixOperation(getOperator(), AstUtil.deepCopy(getArg())).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPropertyInitializer.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPropertyInitializer.java
index 869d5d9d039..a33f1a035e2 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPropertyInitializer.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsPropertyInitializer.java
@@ -57,6 +57,6 @@ public class JsPropertyInitializer extends SourceInfoAwareJsNode {
     @NotNull
     @Override
     public JsPropertyInitializer deepCopy() {
-        return new JsPropertyInitializer(labelExpr.deepCopy(), valueExpr.deepCopy());
+        return new JsPropertyInitializer(labelExpr.deepCopy(), valueExpr.deepCopy()).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsReturn.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsReturn.java
index d18fda77e80..8b459b0b906 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsReturn.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsReturn.java
@@ -53,6 +53,6 @@ public final class JsReturn extends SourceInfoAwareJsNode implements JsStatement
     @NotNull
     @Override
     public JsReturn deepCopy() {
-        return new JsReturn(AstUtil.deepCopy(expression));
+        return new JsReturn(AstUtil.deepCopy(expression)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsSwitch.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsSwitch.java
index e8b9562412b..4d27322bc02 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsSwitch.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsSwitch.java
@@ -66,6 +66,6 @@ public class JsSwitch extends SourceInfoAwareJsNode implements JsStatement {
         JsExpression expressionCopy = AstUtil.deepCopy(expression);
         List<JsSwitchMember> casesCopy = AstUtil.deepCopy(cases);
 
-        return new JsSwitch(expressionCopy, casesCopy);
+        return new JsSwitch(expressionCopy, casesCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsThrow.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsThrow.java
index da780d9622c..cbd92101636 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsThrow.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsThrow.java
@@ -46,6 +46,6 @@ public class JsThrow extends SourceInfoAwareJsNode implements JsStatement {
     @NotNull
     @Override
     public JsThrow deepCopy() {
-        return new JsThrow(AstUtil.deepCopy(expression));
+        return new JsThrow(AstUtil.deepCopy(expression)).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsTry.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsTry.java
index 6416d8cf251..7c9610304fa 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsTry.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsTry.java
@@ -82,6 +82,6 @@ public class JsTry extends SourceInfoAwareJsNode implements JsStatement {
         List<JsCatch> catchCopy = AstUtil.deepCopy(catches);
         JsBlock finallyCopy = AstUtil.deepCopy(finallyBlock);
 
-        return new JsTry(tryCopy, catchCopy, finallyCopy);
+        return new JsTry(tryCopy, catchCopy, finallyCopy).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsVars.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsVars.java
index 96a1996ad07..18e3a1fc2ee 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsVars.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsVars.java
@@ -106,7 +106,7 @@ public class JsVars extends SourceInfoAwareJsNode implements JsStatement, Iterab
         public JsVar deepCopy() {
             if (initExpression == null) return new JsVar(name);
 
-            return new JsVar(name, initExpression.deepCopy());
+            return new JsVar(name, initExpression.deepCopy()).withMetadataFrom(this);
         }
     }
 
@@ -162,6 +162,6 @@ public class JsVars extends SourceInfoAwareJsNode implements JsStatement, Iterab
     @NotNull
     @Override
     public JsVars deepCopy() {
-        return new JsVars(AstUtil.deepCopy(vars), multiline);
+        return new JsVars(AstUtil.deepCopy(vars), multiline).withMetadataFrom(this);
     }
 }
diff --git a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsWhile.java b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsWhile.java
index 3755e77f254..ccc50a50922 100644
--- a/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsWhile.java
+++ b/js/js.dart-ast/src/com/google/dart/compiler/backend/js/ast/JsWhile.java
@@ -64,6 +64,6 @@ public class JsWhile extends SourceInfoAwareJsNode implements JsStatement {
         JsExpression conditionCopy = AstUtil.deepCopy(condition);
         JsStatement bodyCopy = AstUtil.deepCopy(body);
 
-        return new JsWhile(conditionCopy, bodyCopy);
+        return new JsWhile(conditionCopy, bodyCopy).withMetadataFrom(this);
     }
-}
\ No newline at end of file
+}