diff --git a/tests/baselines/reference/arrowFunctionContexts.js b/tests/baselines/reference/arrowFunctionContexts.js
index 64727398f7..1af0797b41 100644
--- a/tests/baselines/reference/arrowFunctionContexts.js
+++ b/tests/baselines/reference/arrowFunctionContexts.js
@@ -116,7 +116,8 @@ var Base = (function () {
 var Derived = (function (_super) {
     __extends(Derived, _super);
     function Derived() {
-        return _super.call(this, function () { return _this; }) || this;
+        var _this = _super.call(this, function () { return _this; }) || this;
+        return _this;
     }
     return Derived;
 }(Base));
@@ -157,7 +158,8 @@ var M2;
     var Derived = (function (_super) {
         __extends(Derived, _super);
         function Derived() {
-            return _super.call(this, function () { return _this; }) || this;
+            var _this = _super.call(this, function () { return _this; }) || this;
+            return _this;
         }
         return Derived;
     }(Base));
diff --git a/tests/baselines/reference/captureThisInSuperCall.js b/tests/baselines/reference/captureThisInSuperCall.js
index 2c4df5db96..069871f598 100644
--- a/tests/baselines/reference/captureThisInSuperCall.js
+++ b/tests/baselines/reference/captureThisInSuperCall.js
@@ -22,7 +22,8 @@ var A = (function () {
 var B = (function (_super) {
     __extends(B, _super);
     function B() {
-        return _super.call(this, { test: function () { return _this.someMethod(); } }) || this;
+        var _this = _super.call(this, { test: function () { return _this.someMethod(); } }) || this;
+        return _this;
     }
     B.prototype.someMethod = function () { };
     return B;
diff --git a/tests/baselines/reference/checkSuperCallBeforeThisAccessing5.js b/tests/baselines/reference/checkSuperCallBeforeThisAccessing5.js
index 4cce975d6d..ded73f57ba 100644
--- a/tests/baselines/reference/checkSuperCallBeforeThisAccessing5.js
+++ b/tests/baselines/reference/checkSuperCallBeforeThisAccessing5.js
@@ -25,7 +25,8 @@ var Based = (function () {
 var Derived = (function (_super) {
     __extends(Derived, _super);
     function Derived() {
-        return _super.call(this, this.x) || this;
+        var _this = _super.call(this, _this.x) || this;
+        return _this;
     }
     return Derived;
 }(Based));
diff --git a/tests/baselines/reference/checkSuperCallBeforeThisAccessing7.js b/tests/baselines/reference/checkSuperCallBeforeThisAccessing7.js
index ca12c16e04..364aed4d4b 100644
--- a/tests/baselines/reference/checkSuperCallBeforeThisAccessing7.js
+++ b/tests/baselines/reference/checkSuperCallBeforeThisAccessing7.js
@@ -23,7 +23,8 @@ var Base = (function () {
 var Super = (function (_super) {
     __extends(Super, _super);
     function Super() {
-        return _super.call(this, (function () { return _this; })) || this;
+        var _this = _super.call(this, (function () { return _this; })) || this;
+        return _this;
     }
     return Super;
 }(Base));
diff --git a/tests/baselines/reference/derivedClassSuperCallsWithThisArg.js b/tests/baselines/reference/derivedClassSuperCallsWithThisArg.js
index 504d414a60..039e25919f 100644
--- a/tests/baselines/reference/derivedClassSuperCallsWithThisArg.js
+++ b/tests/baselines/reference/derivedClassSuperCallsWithThisArg.js
@@ -42,7 +42,8 @@ var Base = (function () {
 var Derived = (function (_super) {
     __extends(Derived, _super);
     function Derived() {
-        return _super.call(this, _this) || this;
+        var _this = _super.call(this, _this) || this;
+        return _this;
     }
     return Derived;
 }(Base));
diff --git a/tests/baselines/reference/superCallBeforeThisAccessing2.js b/tests/baselines/reference/superCallBeforeThisAccessing2.js
index 7331718a9e..91cc3d28dd 100644
--- a/tests/baselines/reference/superCallBeforeThisAccessing2.js
+++ b/tests/baselines/reference/superCallBeforeThisAccessing2.js
@@ -24,7 +24,8 @@ var Base = (function () {
 var D = (function (_super) {
     __extends(D, _super);
     function D() {
-        return _super.call(this, function () { _this._t; }) || this;
+        var _this = _super.call(this, function () { _this._t; }) || this;
+        return _this;
     }
     return D;
 }(Base));
diff --git a/tests/baselines/reference/superCallBeforeThisAccessing6.js b/tests/baselines/reference/superCallBeforeThisAccessing6.js
index e4dfb3f714..4eb8e5266c 100644
--- a/tests/baselines/reference/superCallBeforeThisAccessing6.js
+++ b/tests/baselines/reference/superCallBeforeThisAccessing6.js
@@ -24,7 +24,8 @@ var Base = (function () {
 var D = (function (_super) {
     __extends(D, _super);
     function D() {
-        return _super.call(this, this) || this;
+        var _this = _super.call(this, _this) || this;
+        return _this;
     }
     return D;
 }(Base));
diff --git a/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js b/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js
index 15bc0c40f3..3fcf7167ee 100644
--- a/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js
+++ b/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js
@@ -40,7 +40,8 @@ var C1 = (function (_super) {
 var C2 = (function (_super) {
     __extends(C2, _super);
     function C2() {
-        return _super.call(this, _super.x.call(_this)) || this;
+        var _this = _super.call(this, _super.x.call(_this)) || this;
+        return _this;
     }
     return C2;
 }(B));
diff --git a/tests/baselines/reference/thisInInvalidContexts.js b/tests/baselines/reference/thisInInvalidContexts.js
index 1fc1c73463..7f299fd7e1 100644
--- a/tests/baselines/reference/thisInInvalidContexts.js
+++ b/tests/baselines/reference/thisInInvalidContexts.js
@@ -70,7 +70,8 @@ var ClassWithNoInitializer = (function (_super) {
     __extends(ClassWithNoInitializer, _super);
     //'this' in optional super call
     function ClassWithNoInitializer() {
-        return _super.call(this, _this) || this;
+        var _this = _super.call(this, _this) || this;
+        return _this;
     }
     return ClassWithNoInitializer;
 }(BaseErrClass));
diff --git a/tests/baselines/reference/thisInInvalidContextsExternalModule.js b/tests/baselines/reference/thisInInvalidContextsExternalModule.js
index f8cb6d695d..65a1ef1eee 100644
--- a/tests/baselines/reference/thisInInvalidContextsExternalModule.js
+++ b/tests/baselines/reference/thisInInvalidContextsExternalModule.js
@@ -71,7 +71,8 @@ var ClassWithNoInitializer = (function (_super) {
     __extends(ClassWithNoInitializer, _super);
     //'this' in optional super call
     function ClassWithNoInitializer() {
-        return _super.call(this, _this) || this;
+        var _this = _super.call(this, _this) || this;
+        return _this;
     }
     return ClassWithNoInitializer;
 }(BaseErrClass));
diff --git a/tests/baselines/reference/thisInSuperCall.js b/tests/baselines/reference/thisInSuperCall.js
index 2a4d15973a..1c1f11ffbc 100644
--- a/tests/baselines/reference/thisInSuperCall.js
+++ b/tests/baselines/reference/thisInSuperCall.js
@@ -36,7 +36,8 @@ var Base = (function () {
 var Foo = (function (_super) {
     __extends(Foo, _super);
     function Foo() {
-        return _super.call(this, _this) || this;
+        var _this = _super.call(this, _this) || this;
+        return _this;
     }
     return Foo;
 }(Base));
diff --git a/tests/baselines/reference/thisInSuperCall2.js b/tests/baselines/reference/thisInSuperCall2.js
index eabfa9d562..6288082ed6 100644
--- a/tests/baselines/reference/thisInSuperCall2.js
+++ b/tests/baselines/reference/thisInSuperCall2.js
@@ -33,7 +33,8 @@ var Base = (function () {
 var Foo = (function (_super) {
     __extends(Foo, _super);
     function Foo() {
-        return _super.call(this, _this) || this;
+        var _this = _super.call(this, _this) || this;
+        return _this;
     }
     return Foo;
 }(Base));
diff --git a/tests/baselines/reference/validUseOfThisInSuper.js b/tests/baselines/reference/validUseOfThisInSuper.js
index 483e905b48..bbd564db36 100644
--- a/tests/baselines/reference/validUseOfThisInSuper.js
+++ b/tests/baselines/reference/validUseOfThisInSuper.js
@@ -24,7 +24,8 @@ var Base = (function () {
 var Super = (function (_super) {
     __extends(Super, _super);
     function Super() {
-        return _super.call(this, (function () { return _this; })()) || this;
+        var _this = _super.call(this, (function () { return _this; })()) || this;
+        return _this;
     }
     return Super;
 }(Base));