diff --git a/test/core/fixtures/transformation/es6.modules-system/exports-default/expected.js b/test/core/fixtures/transformation/es6.modules-system/exports-default/expected.js
index 453baf6142..7854fc3ce8 100644
--- a/test/core/fixtures/transformation/es6.modules-system/exports-default/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/exports-default/expected.js
@@ -1,4 +1,6 @@
 System.register([], function (_export) {
+  "use strict";
+
   var _default, Foo;
 
   _export("default", foo);
@@ -10,8 +12,6 @@ System.register([], function (_export) {
   return {
     setters: [],
     execute: function () {
-      "use strict";
-
       _export("default", 42);
 
       _export("default", {});
@@ -39,4 +39,4 @@ System.register([], function (_export) {
       _export("default", Foo);
     }
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/exports-from/expected.js b/test/core/fixtures/transformation/es6.modules-system/exports-from/expected.js
index c1eaca763d..b7b8242360 100644
--- a/test/core/fixtures/transformation/es6.modules-system/exports-from/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/exports-from/expected.js
@@ -1,4 +1,6 @@
 System.register(["foo"], function (_export) {
+  "use strict";
+
   return {
     setters: [function (_foo) {
       for (var _key in _foo) {
@@ -19,8 +21,6 @@ System.register(["foo"], function (_export) {
 
       _export("bar", _foo.bar);
     }],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/exports-named/expected.js b/test/core/fixtures/transformation/es6.modules-system/exports-named/expected.js
index 410345bcfa..86487ee2f5 100644
--- a/test/core/fixtures/transformation/es6.modules-system/exports-named/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/exports-named/expected.js
@@ -1,9 +1,9 @@
 System.register([], function (_export) {
+  "use strict";
+
   return {
     setters: [],
     execute: function () {
-      "use strict";
-
       _export("foo", foo);
 
       _export("foo", foo);
@@ -19,4 +19,4 @@ System.register([], function (_export) {
       _export("bar", bar);
     }
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/exports-variable/expected.js b/test/core/fixtures/transformation/es6.modules-system/exports-variable/expected.js
index c5ab473b75..bc93dd73b5 100644
--- a/test/core/fixtures/transformation/es6.modules-system/exports-variable/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/exports-variable/expected.js
@@ -1,4 +1,6 @@
 System.register([], function (_export) {
+  "use strict";
+
   var foo, foo2, foo3, foo4, foo5, foo6, foo8;
 
   _export("foo7", foo7);
@@ -10,8 +12,6 @@ System.register([], function (_export) {
   return {
     setters: [],
     execute: function () {
-      "use strict";
-
       foo = 1;
 
       _export("foo", foo);
@@ -43,4 +43,4 @@ System.register([], function (_export) {
       _export("foo3", foo3 = 5);
     }
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/get-module-name-option/expected.js b/test/core/fixtures/transformation/es6.modules-system/get-module-name-option/expected.js
index 0f7fc369ae..0def1f9524 100644
--- a/test/core/fixtures/transformation/es6.modules-system/get-module-name-option/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/get-module-name-option/expected.js
@@ -1,8 +1,8 @@
 System.register("my custom module name", [], function (_export) {
+  "use strict";
+
   return {
     setters: [],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/hoist-function-exports/expected.js b/test/core/fixtures/transformation/es6.modules-system/hoist-function-exports/expected.js
index 4056aa7a5e..ad3421dd2e 100644
--- a/test/core/fixtures/transformation/es6.modules-system/hoist-function-exports/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/hoist-function-exports/expected.js
@@ -1,4 +1,6 @@
 System.register(["./evens"], function (_export) {
+  "use strict";
+
   var isEven, p, isOdd;
 
   _export("nextOdd", nextOdd);
@@ -12,8 +14,6 @@ System.register(["./evens"], function (_export) {
       isEven = _evens.isEven;
     }],
     execute: function () {
-      "use strict";
-
       p = 5;
 
       _export("p", p);
@@ -27,4 +27,4 @@ System.register(["./evens"], function (_export) {
       _export("isOdd", isOdd);
     }
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/imports-default/expected.js b/test/core/fixtures/transformation/es6.modules-system/imports-default/expected.js
index 2cb90409c2..16a71b2ed4 100644
--- a/test/core/fixtures/transformation/es6.modules-system/imports-default/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/imports-default/expected.js
@@ -1,12 +1,12 @@
 System.register(["foo"], function (_export) {
+  "use strict";
+
   var foo, foo2;
   return {
     setters: [function (_foo) {
       foo = _foo["default"];
       foo2 = _foo["default"];
     }],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/imports-glob/expected.js b/test/core/fixtures/transformation/es6.modules-system/imports-glob/expected.js
index 67e60e45ca..5df9008d7c 100644
--- a/test/core/fixtures/transformation/es6.modules-system/imports-glob/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/imports-glob/expected.js
@@ -1,11 +1,11 @@
 System.register(["foo"], function (_export) {
+  "use strict";
+
   var foo;
   return {
     setters: [function (_foo) {
       foo = _foo;
     }],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/imports-mixing/expected.js b/test/core/fixtures/transformation/es6.modules-system/imports-mixing/expected.js
index 9ac0cd5ce2..786d2e6869 100644
--- a/test/core/fixtures/transformation/es6.modules-system/imports-mixing/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/imports-mixing/expected.js
@@ -1,12 +1,12 @@
 System.register(["foo"], function (_export) {
+  "use strict";
+
   var foo, xyz;
   return {
     setters: [function (_foo) {
       foo = _foo["default"];
       xyz = _foo.baz;
     }],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/imports-named/expected.js b/test/core/fixtures/transformation/es6.modules-system/imports-named/expected.js
index b66550bded..e6704667be 100644
--- a/test/core/fixtures/transformation/es6.modules-system/imports-named/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/imports-named/expected.js
@@ -1,4 +1,6 @@
 System.register(["foo"], function (_export) {
+  "use strict";
+
   var bar, bar2, baz, baz2, baz3, xyz;
   return {
     setters: [function (_foo) {
@@ -9,8 +11,6 @@ System.register(["foo"], function (_export) {
       baz3 = _foo.bar;
       xyz = _foo.xyz;
     }],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/imports/expected.js b/test/core/fixtures/transformation/es6.modules-system/imports/expected.js
index 2b02e610fc..005c4b922f 100644
--- a/test/core/fixtures/transformation/es6.modules-system/imports/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/imports/expected.js
@@ -1,8 +1,8 @@
 System.register(["foo", "foo-bar", "./directory/foo-bar"], function (_export) {
+  "use strict";
+
   return {
     setters: [function (_foo) {}, function (_fooBar) {}, function (_directoryFooBar) {}],
-    execute: function () {
-      "use strict";
-    }
+    execute: function () {}
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/overview/expected.js b/test/core/fixtures/transformation/es6.modules-system/overview/expected.js
index b4b80d7d38..c818618f83 100644
--- a/test/core/fixtures/transformation/es6.modules-system/overview/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/overview/expected.js
@@ -1,4 +1,6 @@
 System.register(["foo", "foo-bar", "./directory/foo-bar"], function (_export) {
+  "use strict";
+
   var foo, foo2, bar, bar2, test2;
   return {
     setters: [function (_foo) {
@@ -8,8 +10,6 @@ System.register(["foo", "foo-bar", "./directory/foo-bar"], function (_export) {
       bar2 = _foo.foo;
     }, function (_fooBar) {}, function (_directoryFooBar) {}],
     execute: function () {
-      "use strict";
-
       _export("test", test);
 
       test2 = 5;
@@ -19,4 +19,4 @@ System.register(["foo", "foo-bar", "./directory/foo-bar"], function (_export) {
       _export("default", test);
     }
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es6.modules-system/remap/expected.js b/test/core/fixtures/transformation/es6.modules-system/remap/expected.js
index c0922ff2b4..7bedb706ab 100644
--- a/test/core/fixtures/transformation/es6.modules-system/remap/expected.js
+++ b/test/core/fixtures/transformation/es6.modules-system/remap/expected.js
@@ -1,10 +1,10 @@
 System.register([], function (_export) {
+  "use strict";
+
   var test, a, b, d;
   return {
     setters: [],
     execute: function () {
-      "use strict";
-
       test = 2;
 
       _export("test", test);
@@ -39,4 +39,4 @@ System.register([], function (_export) {
       _export("f", _export("e", d = 4));
     }
   };
-});
\ No newline at end of file
+});
diff --git a/test/core/fixtures/transformation/es7.decorators/class-getter-and-setter/expected.js b/test/core/fixtures/transformation/es7.decorators/class-getter-and-setter/expected.js
index 8e9b70a100..8aa07f0846 100644
--- a/test/core/fixtures/transformation/es7.decorators/class-getter-and-setter/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/class-getter-and-setter/expected.js
@@ -8,8 +8,8 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, [{
     key: "foo",
     decorators: [bar, foo],
-    get: function get() {},
-    set: function set(bar) {}
+    get: function () {},
+    set: function (bar) {}
   }]);
   return Foo;
 })();
diff --git a/test/core/fixtures/transformation/es7.decorators/class-getter/expected.js b/test/core/fixtures/transformation/es7.decorators/class-getter/expected.js
index 06b1d2294e..8c7d3a793d 100644
--- a/test/core/fixtures/transformation/es7.decorators/class-getter/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/class-getter/expected.js
@@ -8,7 +8,7 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, [{
     key: "foo",
     decorators: [bar],
-    get: function get() {}
+    get: function () {}
   }]);
   return Foo;
 })();
diff --git a/test/core/fixtures/transformation/es7.decorators/class-init-instance-props/expected.js b/test/core/fixtures/transformation/es7.decorators/class-init-instance-props/expected.js
index e564a5f47e..db03a7b153 100644
--- a/test/core/fixtures/transformation/es7.decorators/class-init-instance-props/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/class-init-instance-props/expected.js
@@ -11,7 +11,7 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, [{
     key: "foo",
     decorators: [bar],
-    initializer: function initializer() {
+    initializer: function () {
       return "Bar";
     },
     enumerable: true
diff --git a/test/core/fixtures/transformation/es7.decorators/class-init-static-props/expected.js b/test/core/fixtures/transformation/es7.decorators/class-init-static-props/expected.js
index 8bdff77924..6c0c573906 100644
--- a/test/core/fixtures/transformation/es7.decorators/class-init-static-props/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/class-init-static-props/expected.js
@@ -10,7 +10,7 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, null, [{
     key: "foo",
     decorators: [bar],
-    initializer: function initializer() {
+    initializer: function () {
       return "Bar";
     },
     enumerable: true
diff --git a/test/core/fixtures/transformation/es7.decorators/class-setter/expected.js b/test/core/fixtures/transformation/es7.decorators/class-setter/expected.js
index 57426dd80c..7b9537b539 100644
--- a/test/core/fixtures/transformation/es7.decorators/class-setter/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/class-setter/expected.js
@@ -8,7 +8,7 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, [{
     key: "foo",
     decorators: [bar],
-    set: function set(arg) {}
+    set: function (arg) {}
   }]);
   return Foo;
 })();
diff --git a/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/actual.js b/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/actual.js
index 772c63c875..37a0b6a98f 100644
--- a/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/actual.js
+++ b/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/actual.js
@@ -5,7 +5,7 @@ var obj = {
   },
 
   @foo
-  set foo() {
+  set foo(bar) {
 
   }
 };
diff --git a/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/expected.js b/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/expected.js
index 117515628e..68c9af550f 100644
--- a/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/object-getter-and-setter/expected.js
@@ -3,6 +3,6 @@
 var obj = babelHelpers.createDecoratedObject([{
   key: "foo",
   decorators: [foo, foo],
-  get: function get() {},
-  set: function set() {}
+  get: function () {},
+  set: function (bar) {}
 }]);
diff --git a/test/core/fixtures/transformation/es7.decorators/object-getter/expected.js b/test/core/fixtures/transformation/es7.decorators/object-getter/expected.js
index bb651cf283..e0aa727de6 100644
--- a/test/core/fixtures/transformation/es7.decorators/object-getter/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/object-getter/expected.js
@@ -3,5 +3,5 @@
 var obj = babelHelpers.createDecoratedObject([{
   key: "foo",
   decorators: [foo],
-  get: function get() {}
+  get: function () {}
 }]);
diff --git a/test/core/fixtures/transformation/es7.decorators/object-setter/actual.js b/test/core/fixtures/transformation/es7.decorators/object-setter/actual.js
index ec760bb339..52eb95db88 100644
--- a/test/core/fixtures/transformation/es7.decorators/object-setter/actual.js
+++ b/test/core/fixtures/transformation/es7.decorators/object-setter/actual.js
@@ -1,6 +1,6 @@
 var obj = {
   @foo
-  set foo() {
+  set foo(bar) {
 
   }
 };
diff --git a/test/core/fixtures/transformation/es7.decorators/object-setter/expected.js b/test/core/fixtures/transformation/es7.decorators/object-setter/expected.js
index 6b16d5c65c..ee3dc12281 100644
--- a/test/core/fixtures/transformation/es7.decorators/object-setter/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/object-setter/expected.js
@@ -3,5 +3,5 @@
 var obj = babelHelpers.createDecoratedObject([{
   key: "foo",
   decorators: [foo],
-  set: function set() {}
+  set: function (bar) {}
 }]);
diff --git a/test/core/fixtures/transformation/es7.decorators/object/expected.js b/test/core/fixtures/transformation/es7.decorators/object/expected.js
index efe805cf25..7a7cc30560 100644
--- a/test/core/fixtures/transformation/es7.decorators/object/expected.js
+++ b/test/core/fixtures/transformation/es7.decorators/object/expected.js
@@ -3,18 +3,18 @@
 var obj = babelHelpers.createDecoratedObject([{
   key: "bar",
   decorators: [foo],
-  initializer: function initializer() {
-    return function () {};
+  initializer: function () {
+    return function bar() {};
   }
 }, {
   key: "foo",
   decorators: [bar],
-  initializer: function initializer() {
+  initializer: function () {
     return "lol";
   }
 }, {
   key: "yes",
-  initializer: function initializer() {
+  initializer: function () {
     return "wow";
   }
 }]);
diff --git a/test/core/fixtures/transformation/runtime/full/expected.js b/test/core/fixtures/transformation/runtime/full/expected.js
index 2f08b10a1c..3f3795a497 100644
--- a/test/core/fixtures/transformation/runtime/full/expected.js
+++ b/test/core/fixtures/transformation/runtime/full/expected.js
@@ -1,20 +1,21 @@
 "use strict";
 
-var _Object$defineProperty = require("babel-runtime/core-js/object/define-property")["default"];
-
-var _Symbol = require("babel-runtime/core-js/symbol")["default"];
-
-var _regeneratorRuntime = require("babel-runtime/regenerator")["default"];
-
-var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"];
-
-var _interopRequireWildcard = require("babel-runtime/helpers/interop-require-wildcard")["default"];
-
 _Object$defineProperty(exports, "__esModule", {
   value: true
 });
 
 exports.giveWord = giveWord;
+
+var _regeneratorRuntime = require("babel-runtime/regenerator")["default"];
+
+var _Object$defineProperty = require("babel-runtime/core-js/object/define-property")["default"];
+
+var _Symbol = require("babel-runtime/core-js/symbol")["default"];
+
+var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"];
+
+var _interopRequireWildcard = require("babel-runtime/helpers/interop-require-wildcard")["default"];
+
 var marked0$0 = [giveWord].map(_regeneratorRuntime.mark);
 
 var _someModule = require("someModule");
@@ -41,4 +42,4 @@ function giveWord() {
 }
 
 _someModule2["default"];
-bar;
\ No newline at end of file
+bar;
diff --git a/test/core/fixtures/transformation/source-maps/class/expected.js b/test/core/fixtures/transformation/source-maps/class/expected.js
index c9b2c12183..25517b3e99 100644
--- a/test/core/fixtures/transformation/source-maps/class/expected.js
+++ b/test/core/fixtures/transformation/source-maps/class/expected.js
@@ -7,7 +7,7 @@ var Test = (function () {
 
   babelHelpers.createClass(Test, [{
     key: "bar",
-    get: function get() {
+    get: function () {
       throw new Error("wow");
     }
   }]);