From 171bcad870d4bbac5364ad03239bc380b69c6179 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Mon, 3 Nov 2014 17:52:15 +1100
Subject: [PATCH] make transformation tests compare output instead of ast

---
 lib/6to5/generator.js                         |  9 +++-
 .../transformation/api/blacklist/expected.js  |  2 +-
 .../transformation/api/whitelist/expected.js  |  6 +--
 .../array-comprehension/arguments/expected.js |  3 +-
 .../multiple-if/expected.js                   |  9 ++--
 .../array-comprehension/multiple/expected.js  |  9 ++--
 .../array-comprehension/single-if/expected.js |  4 +-
 .../array-comprehension/single/expected.js    |  2 +-
 .../array-comprehension/this/expected.js      |  7 +--
 .../arrow-functions/arguments/expected.js     | 43 ++++-----------
 .../default-parameters/expected.js            |  2 +-
 .../destructuring-parameters/expected.js      |  3 +-
 .../empty-arguments/expected.js               |  2 +-
 .../arrow-functions/empty-block/expected.js   |  3 +-
 .../arrow-functions/expression/expected.js    |  2 +-
 .../arrow-functions/inside-call/expected.js   |  2 +-
 .../multiple-arguments/expected.js            |  2 +-
 .../arrow-functions/nested/expected.js        | 26 ++++-----
 .../paran-insertion/expected.js               |  2 +-
 .../single-argument/expected.js               |  2 +-
 .../arrow-functions/statement/expected.js     |  2 +-
 .../arrow-functions/this/expected.js          |  4 +-
 .../classes/accessing-super-class/expected.js | 54 ++++++++-----------
 .../accessing-super-properties/expected.js    | 19 +++----
 .../calling-super-properties/expected.js      | 32 +++++------
 .../classes/constructor/expected.js           | 19 +++----
 .../instance-getter-and-setter/expected.js    | 21 ++++----
 .../classes/instance-getter/expected.js       | 14 ++---
 .../classes/instance-method/expected.js       | 17 +++---
 .../classes/instance-setter/expected.js       | 14 ++---
 .../classes/plain-class/expected.js           |  2 +-
 .../classes/statement/expected.js             | 26 ++++-----
 .../transformation/classes/static/expected.js | 13 +++--
 .../expected.js                               | 24 ++++-----
 .../super-class-id-non-identifiers/actual.js  |  4 +-
 .../expected.js                               | 19 +++----
 .../classes/super-class/expected.js           | 19 +++----
 .../super-function-fallback/expected.js       |  2 +-
 .../comments/preserve-multi-line/expected.js  |  5 +-
 .../comments/preserve-single-line/expected.js |  3 +-
 .../argument/expected.js                      |  4 +-
 .../assignment/expected.js                    |  4 +-
 .../method/expected.js                        |  7 ++-
 .../computed-property-names/mixed/expected.js |  4 +-
 .../multiple/expected.js                      |  4 +-
 .../single/expected.js                        |  4 +-
 .../computed-property-names/this/expected.js  |  6 +--
 .../variable/expected.js                      |  4 +-
 .../constants/destructuring/expected.js       |  5 +-
 .../constants/program/expected.js             |  1 +
 .../default-parameters/multiple/expected.js   | 16 ++----
 .../default-parameters/single/expected.js     |  6 +--
 .../destructuring/array/expected.js           |  1 +
 .../destructuring/assignment/expected.js      |  1 +
 .../destructuring/empty/expected.js           |  1 +
 .../destructuring/for-of/expected.js          |  2 +-
 .../member-expression/expected.js             |  3 +-
 .../destructuring/mixed/expected.js           |  1 +
 .../destructuring/multiple/expected.js        |  1 +
 .../destructuring/object-advanced/expected.js |  1 +
 .../destructuring/object-basic/expected.js    |  1 +
 .../destructuring/parameters/expected.js      |  2 +-
 .../for-of/identifier/expected.js             |  2 +-
 .../transformation/for-of/let/expected.js     |  2 +-
 .../for-of/multiple/expected.js               |  5 +-
 .../transformation/for-of/var/expected.js     |  2 +-
 .../transformation/jsx/annotation/expected.js |  3 +-
 .../transformation/jsx/empty/expected.js      |  3 +-
 .../transformation/jsx/everything/expected.js |  6 +--
 .../jsx/expressions/expected.js               |  4 +-
 .../transformation/jsx/known-tags/expected.js |  1 +
 .../jsx/member-expression/expected.js         |  1 +
 .../jsx/self-closing-tags/expected.js         |  5 +-
 .../jsx/simple-tags/expected.js               |  1 +
 .../jsx/tags-with-children/expected.js        |  8 +--
 .../jsx/tags-with-literals/expected.js        |  4 ++
 .../let-scoping/for-in-initializers/exec.js   |  2 +-
 .../let-scoping/for-initializers/exec.js      |  2 +-
 .../let-scoping/in-closure/exec.js            |  2 +-
 .../let-scoping/nested-conflict/exec.js       |  2 +-
 .../let-scoping/nested-function-1/exec.js     |  2 +-
 .../let-scoping/nested-function-2/exec.js     |  2 +-
 .../no-nested-function-declarations/actual.js |  2 +-
 .../modules-amd/exports-default/actual.js     |  2 +-
 .../modules-amd/exports-default/expected.js   | 14 ++---
 .../modules-amd/exports-from/expected.js      |  4 +-
 .../modules-amd/exports-named/expected.js     |  2 +-
 .../modules-amd/exports-variable/expected.js  |  5 +-
 .../hoist-function-exports/actual.js          |  4 +-
 .../hoist-function-exports/expected.js        | 12 ++---
 .../modules-amd/imports-default/expected.js   |  3 +-
 .../modules-amd/imports-glob/expected.js      |  3 +-
 .../modules-amd/imports-mixing/expected.js    |  2 +-
 .../modules-amd/imports-named/expected.js     |  2 +-
 .../modules-amd/overview/expected.js          |  3 +-
 .../modules-common/exports-default/actual.js  |  2 +-
 .../exports-default/expected.js               | 13 ++---
 .../modules-common/exports-from/expected.js   |  4 +-
 .../modules-common/exports-named/expected.js  |  1 +
 .../exports-variable/expected.js              |  6 +--
 .../hoist-function-exports/actual.js          |  4 +-
 .../hoist-function-exports/expected.js        | 11 ++--
 .../imports-default/expected.js               |  1 +
 .../modules-common/imports-glob/expected.js   |  1 +
 .../modules-common/imports-mixing/expected.js |  3 +-
 .../modules-common/imports-named/expected.js  |  1 +
 .../modules-common/imports/expected.js        |  3 ++
 .../modules-common/overview/expected.js       |  5 ++
 .../modules-umd/exports-default/actual.js     |  2 +-
 .../modules-umd/exports-default/expected.js   | 14 ++---
 .../modules-umd/exports-from/expected.js      |  4 +-
 .../modules-umd/exports-named/expected.js     |  2 +-
 .../modules-umd/exports-variable/expected.js  |  5 +-
 .../hoist-function-exports/actual.js          |  4 +-
 .../hoist-function-exports/expected.js        | 12 ++---
 .../modules-umd/imports-default/expected.js   |  2 +-
 .../modules-umd/imports-glob/expected.js      |  3 +-
 .../modules-umd/imports-mixing/expected.js    |  3 +-
 .../modules-umd/imports-named/expected.js     |  3 +-
 .../modules-umd/overview/expected.js          |  4 +-
 .../getter-and-setter/expected.js             | 21 ++++----
 .../getter/expected.js                        | 14 ++---
 .../method/expected.js                        |  8 ++-
 .../setter/expected.js                        | 14 ++---
 .../single/expected.js                        |  4 +-
 .../actual.js                                 |  2 +-
 .../expected.js                               |  5 +-
 .../react/display-name-if-missing/actual.js   |  2 +-
 .../react/display-name-if-missing/expected.js |  3 +-
 .../display-name-object-declaration/actual.js |  2 +-
 .../expected.js                               | 15 +++---
 .../actual.js                                 |  2 +-
 .../expected.js                               |  3 +-
 .../actual.js                                 |  2 +-
 .../expected.js                               |  3 +-
 .../arrow-functions/expected.js               |  3 +-
 .../rest-parameters/multiple/expected.js      |  4 +-
 .../rest-parameters/single/expected.js        |  4 +-
 .../source-maps/arrow-function/expected.js    |  5 +-
 .../arrow-function/source-mappings.json       |  2 +-
 .../source-maps/class/expected.js             |  7 ++-
 .../source-maps/class/source-mappings.json    |  2 +-
 .../source-maps/full/expected.js              |  2 +-
 .../source-maps/inline/expected.js            |  4 +-
 .../spread/arguments/expected.js              |  2 +-
 .../spread/array-literal-first/expected.js    |  3 +-
 .../spread/array-literal-middle/expected.js   |  3 +-
 .../spread/array-literal-multiple/expected.js |  3 +-
 .../spread/array-literals/expected.js         |  1 +
 .../expected.js                               |  3 +-
 .../expected.js                               |  3 +-
 .../expected.js                               |  1 +
 .../expected.js                               |  1 +
 .../method-call-array-literal/expected.js     |  1 +
 .../spread/method-call-first/expected.js      |  3 +-
 .../spread/method-call-middle/expected.js     |  3 +-
 .../method-call-multiple-args/expected.js     |  1 +
 .../spread/method-call-multiple/expected.js   |  3 +-
 .../spread/method-call-single-arg/expected.js |  1 +
 .../escape-quotes/expected.js                 |  1 +
 .../template-literals/functions/expected.js   |  1 +
 .../template-literals/multiline/expected.js   |  1 +
 .../template-literals/multiple/expected.js    |  1 +
 .../template-literals/none/expected.js        |  1 +
 .../template-literals/only/expected.js        |  1 +
 .../template-literals/single/expected.js      |  1 +
 .../template-literals/statement/expected.js   |  1 +
 .../template-literals/tag/expected.js         |  1 +
 .../unicode-regex/basic/expected.js           |  6 +--
 .../ignore-non-unicode/expected.js            |  1 +
 .../transformation/use-strict/add/expected.js |  1 +
 .../use-strict/exists/expected.js             |  1 +
 172 files changed, 451 insertions(+), 494 deletions(-)

diff --git a/lib/6to5/generator.js b/lib/6to5/generator.js
index 2e61b17eee..02dd61d57a 100644
--- a/lib/6to5/generator.js
+++ b/lib/6to5/generator.js
@@ -60,7 +60,10 @@ CodeGenerator.prototype.newline = function (removeLast) {
 };
 
 CodeGenerator.prototype.removeLastNewline = function () {
-  if (this.isLast("\n")) this.buf = this.buf.slice(0, -1);
+  if (this.isLast("\n")) {
+    this.buf = this.buf.slice(0, -1);
+    this.line--;
+  }
 };
 
 CodeGenerator.prototype.semicolon = function () {
@@ -189,6 +192,8 @@ CodeGenerator.prototype.printSequence = function (print, nodes, opts) {
 
   opts.print = function (node, i) {
     var needs = function (fn) {
+      if (!self.opts.whitespace) return;
+
       if (node.start != null) {
         // user node
         if (!fn(node)) return;
@@ -217,7 +222,7 @@ CodeGenerator.prototype.printSequence = function (print, nodes, opts) {
 };
 
 CodeGenerator.prototype.hasWhitespaceBetween = function (startToken, endToken) {
-  if (!endToken || !this.opts.whitespace) return false;
+  if (!endToken) return false;
 
   var comments = this.ast.comments;
 
diff --git a/test/fixtures/transformation/api/blacklist/expected.js b/test/fixtures/transformation/api/blacklist/expected.js
index 01fd9509ac..18a766e0bc 100644
--- a/test/fixtures/transformation/api/blacklist/expected.js
+++ b/test/fixtures/transformation/api/blacklist/expected.js
@@ -2,4 +2,4 @@
 
 var Test = function Test() {
   arr.map(x => x * x);
-};
+};
\ No newline at end of file
diff --git a/test/fixtures/transformation/api/whitelist/expected.js b/test/fixtures/transformation/api/whitelist/expected.js
index 4d45519d18..1cd7a48990 100644
--- a/test/fixtures/transformation/api/whitelist/expected.js
+++ b/test/fixtures/transformation/api/whitelist/expected.js
@@ -1,7 +1,7 @@
 class Test {
-  constructor() {
-    arr.map(function(x) {
+  constructor(){
+    arr.map(function (x) {
       return x * x;
     });
   }
-}
+}
\ No newline at end of file
diff --git a/test/fixtures/transformation/array-comprehension/arguments/expected.js b/test/fixtures/transformation/array-comprehension/arguments/expected.js
index 954bd30308..b82dd052a0 100644
--- a/test/fixtures/transformation/array-comprehension/arguments/expected.js
+++ b/test/fixtures/transformation/array-comprehension/arguments/expected.js
@@ -2,8 +2,7 @@
 
 function add() {
   var _arguments = arguments;
-
-  return [1, 2, 3].map(function(i) {
+  return [1, 2, 3].map(function (i) {
     return i * _arguments[0];
   });
 }
diff --git a/test/fixtures/transformation/array-comprehension/multiple-if/expected.js b/test/fixtures/transformation/array-comprehension/multiple-if/expected.js
index 0d1c14d6b8..6fb7798e2a 100644
--- a/test/fixtures/transformation/array-comprehension/multiple-if/expected.js
+++ b/test/fixtures/transformation/array-comprehension/multiple-if/expected.js
@@ -1,10 +1,9 @@
 "use strict";
 
-var seattlers = function() {
+var seattlers = (function () {
   var _arr = [];
-
-  countries.forEach(function(customers) {
-    customers.forEach(function(c) {
+  countries.forEach(function (customers) {
+    customers.forEach(function (c) {
       if (c.city == "Seattle") {
         _arr.push({
           name: c.name,
@@ -15,4 +14,4 @@ var seattlers = function() {
   });
 
   return _arr;
-}();
\ No newline at end of file
+})();
\ No newline at end of file
diff --git a/test/fixtures/transformation/array-comprehension/multiple/expected.js b/test/fixtures/transformation/array-comprehension/multiple/expected.js
index 1bedd8be79..22935ecb9f 100644
--- a/test/fixtures/transformation/array-comprehension/multiple/expected.js
+++ b/test/fixtures/transformation/array-comprehension/multiple/expected.js
@@ -1,13 +1,12 @@
 "use strict";
 
-var arr = function() {
+var arr = (function () {
   var _arr = [];
-
-  "abcdefgh".split("").forEach(function(x) {
-    "12345678".split("").forEach(function(y) {
+  "abcdefgh".split("").forEach(function (x) {
+    "12345678".split("").forEach(function (y) {
       _arr.push(x + y);
     });
   });
 
   return _arr;
-}();
\ No newline at end of file
+})();
\ No newline at end of file
diff --git a/test/fixtures/transformation/array-comprehension/single-if/expected.js b/test/fixtures/transformation/array-comprehension/single-if/expected.js
index a2d0917ebc..757bd236fd 100644
--- a/test/fixtures/transformation/array-comprehension/single-if/expected.js
+++ b/test/fixtures/transformation/array-comprehension/single-if/expected.js
@@ -1,8 +1,8 @@
 "use strict";
 
-var seattlers = customers.filter(function(c) {
+var seattlers = customers.filter(function (c) {
   return c.city == "Seattle";
-}).map(function(c) {
+}).map(function (c) {
   return {
     name: c.name,
     age: c.age
diff --git a/test/fixtures/transformation/array-comprehension/single/expected.js b/test/fixtures/transformation/array-comprehension/single/expected.js
index 619ae58bec..754a2510f6 100644
--- a/test/fixtures/transformation/array-comprehension/single/expected.js
+++ b/test/fixtures/transformation/array-comprehension/single/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-var arr = [1, 2, 3].map(function(i) {
+var arr = [1, 2, 3].map(function (i) {
   return i * i;
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/array-comprehension/this/expected.js b/test/fixtures/transformation/array-comprehension/this/expected.js
index d42443a592..4e26457098 100644
--- a/test/fixtures/transformation/array-comprehension/this/expected.js
+++ b/test/fixtures/transformation/array-comprehension/this/expected.js
@@ -2,12 +2,9 @@
 
 function add() {
   var _this = this;
-
-  return [1, 2, 3].map(function(i) {
+  return [1, 2, 3].map(function (i) {
     return i * _this.multiplier;
   });
 }
 
-add.call({
-  multiplier: 5
-});
\ No newline at end of file
+add.call({ multiplier: 5 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/arguments/expected.js b/test/fixtures/transformation/arrow-functions/arguments/expected.js
index 3b375c58d4..eab095659f 100644
--- a/test/fixtures/transformation/arrow-functions/arguments/expected.js
+++ b/test/fixtures/transformation/arrow-functions/arguments/expected.js
@@ -2,84 +2,63 @@
 
 function one() {
   var _arguments = arguments;
-
-  var inner = function() {
+  var inner = function () {
     return _arguments;
   };
-
   return [].slice.call(inner());
 }
-
 one(1, 2);
 
 function two() {
   var _arguments2 = arguments;
-
-  var inner = function() {
+  var inner = function () {
     return _arguments2;
   };
 
-  var another = function() {
+  var another = function () {
     var _arguments3 = arguments;
-
-    var inner2 = function() {
+    var inner2 = function () {
       return _arguments3;
     };
   };
 
   return [].slice.call(inner());
 }
-
 two(1, 2);
 
 function three() {
   var _arguments4 = arguments;
-
-  var fn = function() {
+  var fn = function () {
     return _arguments4[0] + "bar";
   };
-
   return fn();
 }
-
 three("foo");
 
 function four() {
   var _arguments5 = arguments;
-
-  var fn = function() {
+  var fn = function () {
     return _arguments5[0].foo + "bar";
   };
-
   return fn();
 }
-
-four({
-  foo: "foo"
-});
+four({ foo: "foo" });
 
 function five(obj) {
-  var fn = function() {
+  var fn = function () {
     return obj.arguments[0].foo + "bar";
   };
-
   return fn();
 }
-
-five({
-  arguments: ["foo"]
-});
+five({ arguments: ["foo"] });
 
 function six(obj) {
-  var fn = function() {
-    var fn2 = function() {
+  var fn = function () {
+    var fn2 = function () {
       return arguments[0];
     };
-
     return fn2("foobar");
   };
-
   return fn();
 }
-
 six();
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/default-parameters/expected.js b/test/fixtures/transformation/arrow-functions/default-parameters/expected.js
index baba36b081..0fd9187e91 100644
--- a/test/fixtures/transformation/arrow-functions/default-parameters/expected.js
+++ b/test/fixtures/transformation/arrow-functions/default-parameters/expected.js
@@ -5,4 +5,4 @@ var some = function (count) {
   console.log("count", count);
 };
 
-some();
+some();
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/destructuring-parameters/expected.js b/test/fixtures/transformation/arrow-functions/destructuring-parameters/expected.js
index 07b761fb1a..806f033ff8 100644
--- a/test/fixtures/transformation/arrow-functions/destructuring-parameters/expected.js
+++ b/test/fixtures/transformation/arrow-functions/destructuring-parameters/expected.js
@@ -1,6 +1,7 @@
 "use strict";
+
 var a = function (_ref) {
   var target = _ref.target;
   return console.log(target);
 };
-a({ target: "I am a target" });
+a({ target: "I am a target" });
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/empty-arguments/expected.js b/test/fixtures/transformation/arrow-functions/empty-arguments/expected.js
index b466d764b4..1607385d6f 100644
--- a/test/fixtures/transformation/arrow-functions/empty-arguments/expected.js
+++ b/test/fixtures/transformation/arrow-functions/empty-arguments/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-var t = function() {
+var t = function () {
   return 5 + 5;
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/empty-block/expected.js b/test/fixtures/transformation/arrow-functions/empty-block/expected.js
index ea38a60c98..903965434e 100644
--- a/test/fixtures/transformation/arrow-functions/empty-block/expected.js
+++ b/test/fixtures/transformation/arrow-functions/empty-block/expected.js
@@ -1,2 +1,3 @@
 "use strict";
-var t = function() {};
\ No newline at end of file
+
+var t = function () {};
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/expression/expected.js b/test/fixtures/transformation/arrow-functions/expression/expected.js
index 9691f5dcbf..b38b216584 100644
--- a/test/fixtures/transformation/arrow-functions/expression/expected.js
+++ b/test/fixtures/transformation/arrow-functions/expression/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-arr.map(function(x) {
+arr.map(function (x) {
   return x * x;
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/inside-call/expected.js b/test/fixtures/transformation/arrow-functions/inside-call/expected.js
index aad9088914..79a9246a79 100644
--- a/test/fixtures/transformation/arrow-functions/inside-call/expected.js
+++ b/test/fixtures/transformation/arrow-functions/inside-call/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-arr.map(function(i) {
+arr.map(function (i) {
   return i + 1;
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/multiple-arguments/expected.js b/test/fixtures/transformation/arrow-functions/multiple-arguments/expected.js
index e1d0026d1e..7dcd6be55c 100644
--- a/test/fixtures/transformation/arrow-functions/multiple-arguments/expected.js
+++ b/test/fixtures/transformation/arrow-functions/multiple-arguments/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-var t = function(i, x) {
+var t = function (i, x) {
   return i * x;
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/nested/expected.js b/test/fixtures/transformation/arrow-functions/nested/expected.js
index dd88d22cb4..cba32c7b40 100644
--- a/test/fixtures/transformation/arrow-functions/nested/expected.js
+++ b/test/fixtures/transformation/arrow-functions/nested/expected.js
@@ -1,18 +1,14 @@
 "use strict";
 
-module.exports = {
-  init: function() {
-    var _this = this;
-
-    return new Promise(function(resolve, reject) {
-      MongoClient.connect(config.mongodb, function(err, db) {
-        if (err) {
-          return reject(err);
-        }
-
-        _this.db = db;
-        resolve(_this);
-      });
+module.exports = { init: function () {
+  var _this = this;
+  return new Promise(function (resolve, reject) {
+    MongoClient.connect(config.mongodb, function (err, db) {
+      if (err) {
+        return reject(err);
+      }
+      _this.db = db;
+      resolve(_this);
     });
-  }
-};
\ No newline at end of file
+  });
+} };
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/paran-insertion/expected.js b/test/fixtures/transformation/arrow-functions/paran-insertion/expected.js
index 09605cc5a7..7ee476a8fc 100644
--- a/test/fixtures/transformation/arrow-functions/paran-insertion/expected.js
+++ b/test/fixtures/transformation/arrow-functions/paran-insertion/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-var t = function(i) {
+var t = function (i) {
   return i * 5;
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/single-argument/expected.js b/test/fixtures/transformation/arrow-functions/single-argument/expected.js
index 09605cc5a7..7ee476a8fc 100644
--- a/test/fixtures/transformation/arrow-functions/single-argument/expected.js
+++ b/test/fixtures/transformation/arrow-functions/single-argument/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-var t = function(i) {
+var t = function (i) {
   return i * 5;
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/arrow-functions/statement/expected.js b/test/fixtures/transformation/arrow-functions/statement/expected.js
index ec15fece3a..f233cefd3b 100644
--- a/test/fixtures/transformation/arrow-functions/statement/expected.js
+++ b/test/fixtures/transformation/arrow-functions/statement/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-nums.forEach(function(v) {
+nums.forEach(function (v) {
   if (v % 5 === 0) {
     fives.push(v);
   }
diff --git a/test/fixtures/transformation/arrow-functions/this/expected.js b/test/fixtures/transformation/arrow-functions/this/expected.js
index 6d2e107762..6006321301 100644
--- a/test/fixtures/transformation/arrow-functions/this/expected.js
+++ b/test/fixtures/transformation/arrow-functions/this/expected.js
@@ -1,6 +1,6 @@
 "use strict";
-var _this = this;
 
-var t = function(x) {
+var _this = this;
+var t = function (x) {
   return _this.x + x;
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/accessing-super-class/expected.js b/test/fixtures/transformation/classes/accessing-super-class/expected.js
index 95530b559d..1a66b89026 100644
--- a/test/fixtures/transformation/classes/accessing-super-class/expected.js
+++ b/test/fixtures/transformation/classes/accessing-super-class/expected.js
@@ -1,60 +1,52 @@
 "use strict";
 
 var _slice = Array.prototype.slice;
-
 var _classProps = function (child, staticProps, instanceProps) {
   if (staticProps) Object.defineProperties(child, staticProps);
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
-var Test = function(Foo) {
+var Test = (function (Foo) {
   var Test = function Test() {
     woops.super.test();
     Foo.call(this);
     Foo.prototype.test.call(this);
     foob(Foo);
+
     Foo.call.apply(Foo, [this].concat(_slice.call(arguments)));
     Foo.call.apply(Foo, [this, "test"].concat(_slice.call(arguments)));
+
     Foo.prototype.test.call.apply(Foo.prototype, [this].concat(_slice.call(arguments)));
     Foo.prototype.test.call.apply(Foo.prototype, [this, "test"].concat(_slice.call(arguments)));
   };
 
   _extends(Test, Foo);
 
-  _classProps(Test, {
-    foo: {
-      writable: true,
-
-      value: function() {
-        Foo.foo.call(this);
-        Foo.foo.call.apply(Foo.foo, [this].concat(_slice.call(arguments)));
-        Foo.foo.call.apply(Foo.foo, [this, "test"].concat(_slice.call(arguments)));
-      }
+  _classProps(Test, { foo: {
+    writable: true,
+    value: function () {
+      Foo.foo.call(this);
+      Foo.foo.call.apply(Foo.foo, [this].concat(_slice.call(arguments)));
+      Foo.foo.call.apply(Foo.foo, [this, "test"].concat(_slice.call(arguments)));
     }
-  }, {
-    test: {
-      writable: true,
-
-      value: function() {
-        Foo.prototype.test.call(this);
-        Foo.prototype.test.call.apply(Foo.prototype.test, [this].concat(_slice.call(arguments)));
-        Foo.prototype.test.call.apply(Foo.prototype.test, [this, "test"].concat(_slice.call(arguments)));
-      }
+  } }, { test: {
+    writable: true,
+    value: function () {
+      Foo.prototype.test.call(this);
+      Foo.prototype.test.call.apply(Foo.prototype.test, [this].concat(_slice.call(arguments)));
+      Foo.prototype.test.call.apply(Foo.prototype.test, [this, "test"].concat(_slice.call(arguments)));
     }
-  });
+  } });
 
   return Test;
-}(Foo);
+})(Foo);
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/accessing-super-properties/expected.js b/test/fixtures/transformation/classes/accessing-super-properties/expected.js
index 87fc08e3fa..7c1ecd5407 100644
--- a/test/fixtures/transformation/classes/accessing-super-properties/expected.js
+++ b/test/fixtures/transformation/classes/accessing-super-properties/expected.js
@@ -1,19 +1,16 @@
 "use strict";
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
-var Test = function(Foo) {
+var Test = (function (Foo) {
   var Test = function Test() {
     Foo.prototype.test;
     Foo.prototype.test.whatever;
@@ -22,4 +19,4 @@ var Test = function(Foo) {
   _extends(Test, Foo);
 
   return Test;
-}(Foo);
+})(Foo);
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/calling-super-properties/expected.js b/test/fixtures/transformation/classes/calling-super-properties/expected.js
index 80824f88ae..4c05f44f9f 100644
--- a/test/fixtures/transformation/classes/calling-super-properties/expected.js
+++ b/test/fixtures/transformation/classes/calling-super-properties/expected.js
@@ -6,19 +6,16 @@ var _classProps = function (child, staticProps, instanceProps) {
 };
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
-var Test = function(Foo) {
+var Test = (function (Foo) {
   var Test = function Test() {
     Foo.prototype.test.whatever();
     Foo.prototype.test.call(this);
@@ -26,15 +23,12 @@ var Test = function(Foo) {
 
   _extends(Test, Foo);
 
-  _classProps(Test, {
-    test: {
-      writable: true,
-
-      value: function() {
-        return Foo.wow.call(this);
-      }
+  _classProps(Test, { test: {
+    writable: true,
+    value: function () {
+      return Foo.wow.call(this);
     }
-  }, null);
+  } });
 
   return Test;
-}(Foo);
+})(Foo);
diff --git a/test/fixtures/transformation/classes/constructor/expected.js b/test/fixtures/transformation/classes/constructor/expected.js
index fcf8fb6aae..a80bf4ff51 100644
--- a/test/fixtures/transformation/classes/constructor/expected.js
+++ b/test/fixtures/transformation/classes/constructor/expected.js
@@ -1,15 +1,12 @@
 "use strict";
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
@@ -17,7 +14,7 @@ var Test = function Test() {
   this.state = "test";
 };
 
-var Foo = function(Bar) {
+var Foo = (function (Bar) {
   var Foo = function Foo() {
     this.state = "test";
   };
@@ -25,4 +22,4 @@ var Foo = function(Bar) {
   _extends(Foo, Bar);
 
   return Foo;
-}(Bar);
+})(Bar);
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/instance-getter-and-setter/expected.js b/test/fixtures/transformation/classes/instance-getter-and-setter/expected.js
index 5ab8570499..4fac2f3c97 100644
--- a/test/fixtures/transformation/classes/instance-getter-and-setter/expected.js
+++ b/test/fixtures/transformation/classes/instance-getter-and-setter/expected.js
@@ -5,20 +5,17 @@ var _classProps = function (child, staticProps, instanceProps) {
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
 
-var Test = function() {
+var Test = (function () {
   var Test = function Test() {};
 
-  _classProps(Test, null, {
-    test: {
-      get: function() {
-        return 5 + 5;
-      },
-
-      set: function(val) {
-        this._test = val;
-      }
+  _classProps(Test, null, { test: {
+    get: function () {
+      return 5 + 5;
+    },
+    set: function (val) {
+      this._test = val;
     }
-  });
+  } });
 
   return Test;
-}();
+})();
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/instance-getter/expected.js b/test/fixtures/transformation/classes/instance-getter/expected.js
index 60aaf32f08..d4cd4e15d0 100644
--- a/test/fixtures/transformation/classes/instance-getter/expected.js
+++ b/test/fixtures/transformation/classes/instance-getter/expected.js
@@ -5,16 +5,12 @@ var _classProps = function (child, staticProps, instanceProps) {
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
 
-var Test = function() {
+var Test = (function () {
   var Test = function Test() {};
 
-  _classProps(Test, null, {
-    test: {
-      get: function() {
-        return 5 + 5;
-      }
-    }
-  });
+  _classProps(Test, null, { test: { get: function () {
+    return 5 + 5;
+  } } });
 
   return Test;
-}();
+})();
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/instance-method/expected.js b/test/fixtures/transformation/classes/instance-method/expected.js
index 50442620fa..bff68c8b99 100644
--- a/test/fixtures/transformation/classes/instance-method/expected.js
+++ b/test/fixtures/transformation/classes/instance-method/expected.js
@@ -5,18 +5,15 @@ var _classProps = function (child, staticProps, instanceProps) {
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
 
-var Test = function() {
+var Test = (function () {
   var Test = function Test() {};
 
-  _classProps(Test, null, {
-    test: {
-      writable: true,
-
-      value: function() {
-        return 5 + 5;
-      }
+  _classProps(Test, null, { test: {
+    writable: true,
+    value: function () {
+      return 5 + 5;
     }
-  });
+  } });
 
   return Test;
-}();
+})();
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/instance-setter/expected.js b/test/fixtures/transformation/classes/instance-setter/expected.js
index fb1e58c8eb..724bc8ee97 100644
--- a/test/fixtures/transformation/classes/instance-setter/expected.js
+++ b/test/fixtures/transformation/classes/instance-setter/expected.js
@@ -5,16 +5,12 @@ var _classProps = function (child, staticProps, instanceProps) {
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
 
-var Test = function() {
+var Test = (function () {
   var Test = function Test() {};
 
-  _classProps(Test, null, {
-    test: {
-      set: function(val) {
-        this._test = val;
-      }
-    }
-  });
+  _classProps(Test, null, { test: { set: function (val) {
+    this._test = val;
+  } } });
 
   return Test;
-}();
+})();
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/plain-class/expected.js b/test/fixtures/transformation/classes/plain-class/expected.js
index 5f98760f68..d4f56f6237 100644
--- a/test/fixtures/transformation/classes/plain-class/expected.js
+++ b/test/fixtures/transformation/classes/plain-class/expected.js
@@ -1,3 +1,3 @@
 "use strict";
 
-var Test = function Test() {};
+var Test = function Test() {};
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/statement/expected.js b/test/fixtures/transformation/classes/statement/expected.js
index 251f0329d7..1a31117543 100644
--- a/test/fixtures/transformation/classes/statement/expected.js
+++ b/test/fixtures/transformation/classes/statement/expected.js
@@ -1,25 +1,27 @@
 "use strict";
 
+var _classProps = function (child, staticProps, instanceProps) {
+  if (staticProps) Object.defineProperties(child, staticProps);
+  if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
+};
+
 var BaseView = function BaseView() {
   this.autoRender = true;
 };
 
-var BaseView = function() {
+var BaseView = function () {
   this.autoRender = true;
 };
 
+var BaseView = (function () {
+  var _class2 = function () {};
 
-var BaseView = function() {
-  var _class2 = function() {};
-
-  Object.defineProperties(_class2.prototype, {
-    foo: {
-      writable: true,
-      value: function() {
-        this.autoRender = true;
-      }
+  _classProps(_class2, null, { foo: {
+    writable: true,
+    value: function () {
+      this.autoRender = true;
     }
-  });
+  } });
 
   return _class2;
-}();
+})();
diff --git a/test/fixtures/transformation/classes/static/expected.js b/test/fixtures/transformation/classes/static/expected.js
index 52724c0c1b..a50fd266e8 100644
--- a/test/fixtures/transformation/classes/static/expected.js
+++ b/test/fixtures/transformation/classes/static/expected.js
@@ -5,20 +5,19 @@ var _classProps = function (child, staticProps, instanceProps) {
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
 
-var A = function() {
+var A = (function () {
   var A = function A() {};
 
   _classProps(A, {
     a: {
       writable: true,
-      value: function() {}
+      value: function () {}
     },
-
     b: {
-      get: function() {},
-      set: function(b) {}
+      get: function () {},
+      set: function (b) {}
     }
-  }, null);
+  });
 
   return A;
-}();
+})();
diff --git a/test/fixtures/transformation/classes/super-class-id-member-expression/expected.js b/test/fixtures/transformation/classes/super-class-id-member-expression/expected.js
index c6c1a4081b..ea49e16e82 100644
--- a/test/fixtures/transformation/classes/super-class-id-member-expression/expected.js
+++ b/test/fixtures/transformation/classes/super-class-id-member-expression/expected.js
@@ -1,19 +1,16 @@
 "use strict";
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
-var BaseController = function(Chaplin) {
+var BaseController = (function (Chaplin) {
   var BaseController = function BaseController() {
     Chaplin.Controller.apply(this, arguments);
   };
@@ -21,9 +18,8 @@ var BaseController = function(Chaplin) {
   _extends(BaseController, Chaplin.Controller);
 
   return BaseController;
-}(Chaplin);
-
-var BaseController2 = function(Chaplin) {
+})(Chaplin);
+var BaseController2 = (function (Chaplin) {
   var BaseController2 = function BaseController2() {
     Chaplin.Controller.Another.apply(this, arguments);
   };
@@ -31,4 +27,4 @@ var BaseController2 = function(Chaplin) {
   _extends(BaseController2, Chaplin.Controller.Another);
 
   return BaseController2;
-}(Chaplin);
+})(Chaplin);
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/super-class-id-non-identifiers/actual.js b/test/fixtures/transformation/classes/super-class-id-non-identifiers/actual.js
index 61658914b7..fd1a14904f 100644
--- a/test/fixtures/transformation/classes/super-class-id-non-identifiers/actual.js
+++ b/test/fixtures/transformation/classes/super-class-id-non-identifiers/actual.js
@@ -1,3 +1,3 @@
-class Q extends function() {} {
-  
+class Q extends function () {} {
+
 }
diff --git a/test/fixtures/transformation/classes/super-class-id-non-identifiers/expected.js b/test/fixtures/transformation/classes/super-class-id-non-identifiers/expected.js
index 61b8ece11d..dc0c70364f 100644
--- a/test/fixtures/transformation/classes/super-class-id-non-identifiers/expected.js
+++ b/test/fixtures/transformation/classes/super-class-id-non-identifiers/expected.js
@@ -1,19 +1,16 @@
 "use strict";
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
-var Q = function(_ref) {
+var Q = (function (_ref) {
   var Q = function Q() {
     _ref.apply(this, arguments);
   };
@@ -21,4 +18,4 @@ var Q = function(_ref) {
   _extends(Q, _ref);
 
   return Q;
-}(function() {});
+})(function () {});
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/super-class/expected.js b/test/fixtures/transformation/classes/super-class/expected.js
index 38a17bb449..423045d77f 100644
--- a/test/fixtures/transformation/classes/super-class/expected.js
+++ b/test/fixtures/transformation/classes/super-class/expected.js
@@ -1,19 +1,16 @@
 "use strict";
 
 var _extends = function (child, parent) {
-  child.prototype = Object.create(parent.prototype, {
-    constructor: {
-      value: child,
-      enumerable: false,
-      writable: true,
-      configurable: true
-    }
-  });
-
+  child.prototype = Object.create(parent.prototype, { constructor: {
+    value: child,
+    enumerable: false,
+    writable: true,
+    configurable: true
+  } });
   child.__proto__ = parent;
 };
 
-var Test = function(Foo) {
+var Test = (function (Foo) {
   var Test = function Test() {
     Foo.apply(this, arguments);
   };
@@ -21,4 +18,4 @@ var Test = function(Foo) {
   _extends(Test, Foo);
 
   return Test;
-}(Foo);
+})(Foo);
\ No newline at end of file
diff --git a/test/fixtures/transformation/classes/super-function-fallback/expected.js b/test/fixtures/transformation/classes/super-function-fallback/expected.js
index e17e74db06..b2c09ca204 100644
--- a/test/fixtures/transformation/classes/super-function-fallback/expected.js
+++ b/test/fixtures/transformation/classes/super-function-fallback/expected.js
@@ -2,4 +2,4 @@
 
 var Test = function Test() {
   Function.prototype.hasOwnProperty.call(this, "test");
-};
+};
\ No newline at end of file
diff --git a/test/fixtures/transformation/comments/preserve-multi-line/expected.js b/test/fixtures/transformation/comments/preserve-multi-line/expected.js
index 1af4bf8949..0bf997ff51 100644
--- a/test/fixtures/transformation/comments/preserve-multi-line/expected.js
+++ b/test/fixtures/transformation/comments/preserve-multi-line/expected.js
@@ -1,6 +1,9 @@
 "use strict";
+
 wow;
+
 /*
  um yeah lol
 */
-test.wow();
+
+test.wow();
\ No newline at end of file
diff --git a/test/fixtures/transformation/comments/preserve-single-line/expected.js b/test/fixtures/transformation/comments/preserve-single-line/expected.js
index 5ae1bb997c..07468c0c5b 100644
--- a/test/fixtures/transformation/comments/preserve-single-line/expected.js
+++ b/test/fixtures/transformation/comments/preserve-single-line/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 wow;
 // um yeah lol
-test.wow();
+test.wow();
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/argument/expected.js b/test/fixtures/transformation/computed-property-names/argument/expected.js
index c0a552041c..fa1e508502 100644
--- a/test/fixtures/transformation/computed-property-names/argument/expected.js
+++ b/test/fixtures/transformation/computed-property-names/argument/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-foo(function(_ref) {
+foo((function (_ref) {
   _ref[bar] = "foobar";
   return _ref;
-}({}));
\ No newline at end of file
+})({}));
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/assignment/expected.js b/test/fixtures/transformation/computed-property-names/assignment/expected.js
index 32ec3eae9a..18c69fa732 100644
--- a/test/fixtures/transformation/computed-property-names/assignment/expected.js
+++ b/test/fixtures/transformation/computed-property-names/assignment/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-foo = function(_foo) {
+foo = (function (_foo) {
   _foo[bar] = "foobar";
   return _foo;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/method/expected.js b/test/fixtures/transformation/computed-property-names/method/expected.js
index 198f336e49..c85e85d2ed 100644
--- a/test/fixtures/transformation/computed-property-names/method/expected.js
+++ b/test/fixtures/transformation/computed-property-names/method/expected.js
@@ -1,9 +1,8 @@
 "use strict";
 
-var obj = function(_obj) {
-  _obj[foobar] = function() {
+var obj = (function (_obj) {
+  _obj[foobar] = function () {
     return "foobar";
   };
-
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/mixed/expected.js b/test/fixtures/transformation/computed-property-names/mixed/expected.js
index 41bbf61c83..314531917a 100644
--- a/test/fixtures/transformation/computed-property-names/mixed/expected.js
+++ b/test/fixtures/transformation/computed-property-names/mixed/expected.js
@@ -1,10 +1,10 @@
 "use strict";
 
-var obj = function(_obj) {
+var obj = (function (_obj) {
   _obj["x" + foo] = "heh";
   _obj["y" + bar] = "noo";
   return _obj;
-}({
+})({
   foo: "foo",
   bar: "bar"
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/multiple/expected.js b/test/fixtures/transformation/computed-property-names/multiple/expected.js
index a922fb279a..cdccd2e6b8 100644
--- a/test/fixtures/transformation/computed-property-names/multiple/expected.js
+++ b/test/fixtures/transformation/computed-property-names/multiple/expected.js
@@ -1,7 +1,7 @@
 "use strict";
 
-var obj = function(_obj) {
+var obj = (function (_obj) {
   _obj["x" + foo] = "heh";
   _obj["y" + bar] = "noo";
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/single/expected.js b/test/fixtures/transformation/computed-property-names/single/expected.js
index d1ddd8d1b0..068ebfece9 100644
--- a/test/fixtures/transformation/computed-property-names/single/expected.js
+++ b/test/fixtures/transformation/computed-property-names/single/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var obj = function(_obj) {
+var obj = (function (_obj) {
   _obj["x" + foo] = "heh";
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/this/expected.js b/test/fixtures/transformation/computed-property-names/this/expected.js
index 958a6e472c..5a5d21d479 100644
--- a/test/fixtures/transformation/computed-property-names/this/expected.js
+++ b/test/fixtures/transformation/computed-property-names/this/expected.js
@@ -1,7 +1,7 @@
 "use strict";
-var _this = this;
 
-var obj = function(_obj) {
+var _this = this;
+var obj = (function (_obj) {
   _obj["x" + _this.foo] = "heh";
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/computed-property-names/variable/expected.js b/test/fixtures/transformation/computed-property-names/variable/expected.js
index 6f6fcc0fd8..1f3bcd3f53 100644
--- a/test/fixtures/transformation/computed-property-names/variable/expected.js
+++ b/test/fixtures/transformation/computed-property-names/variable/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var foo = function(_foo) {
+var foo = (function (_foo) {
   _foo[bar] = "foobar";
   return _foo;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/constants/destructuring/expected.js b/test/fixtures/transformation/constants/destructuring/expected.js
index 5447639209..9211b2c3ed 100644
--- a/test/fixtures/transformation/constants/destructuring/expected.js
+++ b/test/fixtures/transformation/constants/destructuring/expected.js
@@ -1,23 +1,20 @@
 "use strict";
+
 var _ref = [1, 2];
 var _a = _ref[0];
 var _b = _ref[1];
 var _ref2 = [3, 4];
 var _c = _ref2[0];
 var _d = _ref2[1];
-
 var _ref3 = {
   e: 5,
   f: 6
 };
-
 var _e = _ref3.e;
 var _f = _ref3.f;
-
 var _ref4 = {
   a: 7,
   b: 8
 };
-
 var _g = _ref4.a;
 var _h = _ref4.b;
\ No newline at end of file
diff --git a/test/fixtures/transformation/constants/program/expected.js b/test/fixtures/transformation/constants/program/expected.js
index 893bf38e7a..9f78d1ebea 100644
--- a/test/fixtures/transformation/constants/program/expected.js
+++ b/test/fixtures/transformation/constants/program/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _MULTIPLIER = 5;
 
 for (var i in arr) {
diff --git a/test/fixtures/transformation/default-parameters/multiple/expected.js b/test/fixtures/transformation/default-parameters/multiple/expected.js
index fb322b482d..c415d8c70c 100644
--- a/test/fixtures/transformation/default-parameters/multiple/expected.js
+++ b/test/fixtures/transformation/default-parameters/multiple/expected.js
@@ -1,18 +1,12 @@
 "use strict";
 
-var t = function(t, f) {
-  if (f === undefined)
-    f = 5;
-
-  if (t === undefined)
-    t = "foo";
-
+var t = function (t, f) {
+  if (f === undefined) f = 5;
+  if (t === undefined) t = "foo";
   return t + " bar " + f;
 };
 
-var a = function(t, f) {
-  if (f === undefined)
-    f = 5;
-
+var a = function (t, f) {
+  if (f === undefined) f = 5;
   return t + " bar " + f;
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/default-parameters/single/expected.js b/test/fixtures/transformation/default-parameters/single/expected.js
index 173a0d6e82..8cf069d6fc 100644
--- a/test/fixtures/transformation/default-parameters/single/expected.js
+++ b/test/fixtures/transformation/default-parameters/single/expected.js
@@ -1,8 +1,6 @@
 "use strict";
 
-var t = function(t) {
-  if (t === undefined)
-    t = "foo";
-
+var t = function (t) {
+  if (t === undefined) t = "foo";
   return t + " bar";
 };
\ No newline at end of file
diff --git a/test/fixtures/transformation/destructuring/array/expected.js b/test/fixtures/transformation/destructuring/array/expected.js
index 46ab026397..a9fecd9285 100644
--- a/test/fixtures/transformation/destructuring/array/expected.js
+++ b/test/fixtures/transformation/destructuring/array/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _ref = ["hello", [", ", "junk"], ["world"]];
 var a = _ref[0];
 var b = _ref[1][0];
diff --git a/test/fixtures/transformation/destructuring/assignment/expected.js b/test/fixtures/transformation/destructuring/assignment/expected.js
index e018068ea7..cc933660fe 100644
--- a/test/fixtures/transformation/destructuring/assignment/expected.js
+++ b/test/fixtures/transformation/destructuring/assignment/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _ref = f();
 a = _ref[0];
 b = _ref[1];
\ No newline at end of file
diff --git a/test/fixtures/transformation/destructuring/empty/expected.js b/test/fixtures/transformation/destructuring/empty/expected.js
index 19ba8f8c45..0e8947615d 100644
--- a/test/fixtures/transformation/destructuring/empty/expected.js
+++ b/test/fixtures/transformation/destructuring/empty/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _ref = ["foo", "hello", [", ", "junk"], ["world"]];
 var a = _ref[1];
 var b = _ref[2][0];
diff --git a/test/fixtures/transformation/destructuring/for-of/expected.js b/test/fixtures/transformation/destructuring/for-of/expected.js
index 37b42ad4c5..92e6b21ed3 100644
--- a/test/fixtures/transformation/destructuring/for-of/expected.js
+++ b/test/fixtures/transformation/destructuring/for-of/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-for (var _iterator = this.test.expectation.registers[Symbol.iterator](), _step; !(_step = _iterator.next()).done; ) {
+for (var _iterator = this.test.expectation.registers[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
   var _ref = _step.value;
   var name = _ref[0];
   var before = _ref[1];
diff --git a/test/fixtures/transformation/destructuring/member-expression/expected.js b/test/fixtures/transformation/destructuring/member-expression/expected.js
index aa888679f1..2c69800a4f 100644
--- a/test/fixtures/transformation/destructuring/member-expression/expected.js
+++ b/test/fixtures/transformation/destructuring/member-expression/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _ref = [1, 2];
 this.foo = _ref[0];
-this.bar = _ref[1];
+this.bar = _ref[1];
\ No newline at end of file
diff --git a/test/fixtures/transformation/destructuring/mixed/expected.js b/test/fixtures/transformation/destructuring/mixed/expected.js
index f627baae57..3a7cae0ef3 100644
--- a/test/fixtures/transformation/destructuring/mixed/expected.js
+++ b/test/fixtures/transformation/destructuring/mixed/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var x1 = rect.topLeft[0];
 var y1 = rect.topLeft[1];
 var x2 = rect.bottomRight[0];
diff --git a/test/fixtures/transformation/destructuring/multiple/expected.js b/test/fixtures/transformation/destructuring/multiple/expected.js
index 5265295a8e..039184fd2c 100644
--- a/test/fixtures/transformation/destructuring/multiple/expected.js
+++ b/test/fixtures/transformation/destructuring/multiple/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var x = coords.x;
 var y = coords.y;
 var foo = "bar";
\ No newline at end of file
diff --git a/test/fixtures/transformation/destructuring/object-advanced/expected.js b/test/fixtures/transformation/destructuring/object-advanced/expected.js
index 4936464371..00af4c96da 100644
--- a/test/fixtures/transformation/destructuring/object-advanced/expected.js
+++ b/test/fixtures/transformation/destructuring/object-advanced/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var x1 = rect.topLeft.x;
 var y1 = rect.topLeft.y;
 var x2 = rect.bottomRight.x;
diff --git a/test/fixtures/transformation/destructuring/object-basic/expected.js b/test/fixtures/transformation/destructuring/object-basic/expected.js
index 544897c6e4..2794ae6038 100644
--- a/test/fixtures/transformation/destructuring/object-basic/expected.js
+++ b/test/fixtures/transformation/destructuring/object-basic/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var x = coords.x;
 var y = coords.y;
\ No newline at end of file
diff --git a/test/fixtures/transformation/destructuring/parameters/expected.js b/test/fixtures/transformation/destructuring/parameters/expected.js
index fe88a098a3..8685c9a6f5 100644
--- a/test/fixtures/transformation/destructuring/parameters/expected.js
+++ b/test/fixtures/transformation/destructuring/parameters/expected.js
@@ -18,7 +18,7 @@ console.log(unpackObject({
   author: "author"
 }));
 
-var unpackArray = function(_ref3, _ref4) {
+var unpackArray = function (_ref3, _ref4) {
   var a = _ref3[0];
   var b = _ref3[1];
   var c = _ref3[2];
diff --git a/test/fixtures/transformation/for-of/identifier/expected.js b/test/fixtures/transformation/for-of/identifier/expected.js
index 473b0db507..9aa48b1ad6 100644
--- a/test/fixtures/transformation/for-of/identifier/expected.js
+++ b/test/fixtures/transformation/for-of/identifier/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done; ) {
+for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
   i = _step.value;
 }
\ No newline at end of file
diff --git a/test/fixtures/transformation/for-of/let/expected.js b/test/fixtures/transformation/for-of/let/expected.js
index 21113f9fe9..e16dad7c33 100644
--- a/test/fixtures/transformation/for-of/let/expected.js
+++ b/test/fixtures/transformation/for-of/let/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done; ) {
+for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
   var _i = _step.value;
 }
\ No newline at end of file
diff --git a/test/fixtures/transformation/for-of/multiple/expected.js b/test/fixtures/transformation/for-of/multiple/expected.js
index ba12446e35..ab198b7441 100644
--- a/test/fixtures/transformation/for-of/multiple/expected.js
+++ b/test/fixtures/transformation/for-of/multiple/expected.js
@@ -1,9 +1,8 @@
 "use strict";
 
-for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done; ) {
+for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
   var i = _step.value;
 }
-
-for (var _iterator2 = numbers[Symbol.iterator](), _step2; !(_step2 = _iterator2.next()).done; ) {
+for (var _iterator2 = numbers[Symbol.iterator](), _step2; !(_step2 = _iterator2.next()).done;) {
   var i = _step2.value;
 }
\ No newline at end of file
diff --git a/test/fixtures/transformation/for-of/var/expected.js b/test/fixtures/transformation/for-of/var/expected.js
index 943b187ac7..50b4846307 100644
--- a/test/fixtures/transformation/for-of/var/expected.js
+++ b/test/fixtures/transformation/for-of/var/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done; ) {
+for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
   var i = _step.value;
 }
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/annotation/expected.js b/test/fixtures/transformation/jsx/annotation/expected.js
index 2069c82ded..0d5a65d027 100644
--- a/test/fixtures/transformation/jsx/annotation/expected.js
+++ b/test/fixtures/transformation/jsx/annotation/expected.js
@@ -1,5 +1,4 @@
 /** @jsx CUSTOM_DOM */
-
 "use strict";
 
-CUSTOM_DOM.a(null);
+CUSTOM_DOM.a(null);
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/empty/expected.js b/test/fixtures/transformation/jsx/empty/expected.js
index 1a956a0747..6d37224243 100644
--- a/test/fixtures/transformation/jsx/empty/expected.js
+++ b/test/fixtures/transformation/jsx/empty/expected.js
@@ -1,2 +1,3 @@
 "use strict";
-X(null, null);
+
+X(null, null);
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/everything/expected.js b/test/fixtures/transformation/jsx/everything/expected.js
index 7d39e64fbc..a4440ed7e3 100644
--- a/test/fixtures/transformation/jsx/everything/expected.js
+++ b/test/fixtures/transformation/jsx/everything/expected.js
@@ -1,7 +1,3 @@
 "use strict";
 
-X({
-  "data-prop": (x ? Y({
-    prop: 2
-  }) : Z(null, "\n"))
-});
\ No newline at end of file
+X({ "data-prop": x ? Y({ prop: 2 }) : Z(null, "\n") });
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/expressions/expected.js b/test/fixtures/transformation/jsx/expressions/expected.js
index ff1185a7ba..a7ab72bd9c 100644
--- a/test/fixtures/transformation/jsx/expressions/expected.js
+++ b/test/fixtures/transformation/jsx/expressions/expected.js
@@ -1,8 +1,10 @@
 "use strict";
+
 X(null, a);
+
 X(null, a, " ", b);
 
 X({
   prop: a,
   yes: true
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/known-tags/expected.js b/test/fixtures/transformation/jsx/known-tags/expected.js
index ec70567216..3a02eece90 100644
--- a/test/fixtures/transformation/jsx/known-tags/expected.js
+++ b/test/fixtures/transformation/jsx/known-tags/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 React.DOM.a(null);
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/member-expression/expected.js b/test/fixtures/transformation/jsx/member-expression/expected.js
index 4dea12440d..2a43047839 100644
--- a/test/fixtures/transformation/jsx/member-expression/expected.js
+++ b/test/fixtures/transformation/jsx/member-expression/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 Test.X(null);
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/self-closing-tags/expected.js b/test/fixtures/transformation/jsx/self-closing-tags/expected.js
index 3ebb174fab..18cac16984 100644
--- a/test/fixtures/transformation/jsx/self-closing-tags/expected.js
+++ b/test/fixtures/transformation/jsx/self-closing-tags/expected.js
@@ -1,6 +1,5 @@
 "use strict";
+
 X(null);
 
-X({
-  prop: "1"
-});
\ No newline at end of file
+X({ prop: "1" });
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/simple-tags/expected.js b/test/fixtures/transformation/jsx/simple-tags/expected.js
index f38433898c..b7bbfe9f22 100644
--- a/test/fixtures/transformation/jsx/simple-tags/expected.js
+++ b/test/fixtures/transformation/jsx/simple-tags/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 X(null);
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/tags-with-children/expected.js b/test/fixtures/transformation/jsx/tags-with-children/expected.js
index 7af3674f0f..5f3cb3bdca 100644
--- a/test/fixtures/transformation/jsx/tags-with-children/expected.js
+++ b/test/fixtures/transformation/jsx/tags-with-children/expected.js
@@ -1,9 +1,5 @@
 "use strict";
 
-X({
-  prop: "2"
-}, Y(null));
+X({ prop: "2" }, Y(null));
 
-X({
-  prop: "2"
-}, Y(null), Z(null));
+X({ prop: "2" }, Y(null), Z(null));
\ No newline at end of file
diff --git a/test/fixtures/transformation/jsx/tags-with-literals/expected.js b/test/fixtures/transformation/jsx/tags-with-literals/expected.js
index 956943003e..60330adaee 100644
--- a/test/fixtures/transformation/jsx/tags-with-literals/expected.js
+++ b/test/fixtures/transformation/jsx/tags-with-literals/expected.js
@@ -1,5 +1,9 @@
 "use strict";
+
 X(null, "   ");
+
 X(null, "\n");
+
 X(null, "\n  string\n");
+
 X(null, "\n  string\n  string\n  ");
\ No newline at end of file
diff --git a/test/fixtures/transformation/let-scoping/for-in-initializers/exec.js b/test/fixtures/transformation/let-scoping/for-in-initializers/exec.js
index eb713cd261..fdc846c5b0 100644
--- a/test/fixtures/transformation/let-scoping/for-in-initializers/exec.js
+++ b/test/fixtures/transformation/let-scoping/for-in-initializers/exec.js
@@ -5,7 +5,7 @@ var result;
   for (var index in let_array) {
   let let_index = index;
   let let_value = let_array[let_index];
-  let_result.push(function() {
+  let_result.push(function () {
     return [let_index, let_value];
   });
   }
diff --git a/test/fixtures/transformation/let-scoping/for-initializers/exec.js b/test/fixtures/transformation/let-scoping/for-initializers/exec.js
index ec382cc595..37484f804b 100644
--- a/test/fixtures/transformation/let-scoping/for-initializers/exec.js
+++ b/test/fixtures/transformation/let-scoping/for-initializers/exec.js
@@ -4,7 +4,7 @@ var result;
   let let_l = [];
   for (var var_x = 1, var_y = 2, var_z = 3; var_x < 10; var_x ++) {
   let l_x = var_x, l_y = var_y, l_z = var_z;
-  let_l.push(function() {
+  let_l.push(function () {
     return [l_x, l_y, l_z];
   });
   }
diff --git a/test/fixtures/transformation/let-scoping/in-closure/exec.js b/test/fixtures/transformation/let-scoping/in-closure/exec.js
index 3394671528..5a977f7033 100644
--- a/test/fixtures/transformation/let-scoping/in-closure/exec.js
+++ b/test/fixtures/transformation/let-scoping/in-closure/exec.js
@@ -5,7 +5,7 @@ function letInClosure(n) {
   if (i % 3 == 0) {
     continue;
   }
-  l.push(function() {
+  l.push(function () {
     return let_i;
   });
   }
diff --git a/test/fixtures/transformation/let-scoping/nested-conflict/exec.js b/test/fixtures/transformation/let-scoping/nested-conflict/exec.js
index 6bb300a67f..4243019c5f 100644
--- a/test/fixtures/transformation/let-scoping/nested-conflict/exec.js
+++ b/test/fixtures/transformation/let-scoping/nested-conflict/exec.js
@@ -1,4 +1,4 @@
-(function() {
+(function () {
   var x = 1;
   function f() {
   assert.equal(x, 1);
diff --git a/test/fixtures/transformation/let-scoping/nested-function-1/exec.js b/test/fixtures/transformation/let-scoping/nested-function-1/exec.js
index c6080cffbe..617db23c44 100644
--- a/test/fixtures/transformation/let-scoping/nested-function-1/exec.js
+++ b/test/fixtures/transformation/let-scoping/nested-function-1/exec.js
@@ -1,5 +1,5 @@
 function nestedFunction1() {
-  return function() {
+  return function () {
   let let_x = 'let x';
   }
 }
diff --git a/test/fixtures/transformation/let-scoping/nested-function-2/exec.js b/test/fixtures/transformation/let-scoping/nested-function-2/exec.js
index 0888e44034..f993f344c2 100644
--- a/test/fixtures/transformation/let-scoping/nested-function-2/exec.js
+++ b/test/fixtures/transformation/let-scoping/nested-function-2/exec.js
@@ -1,5 +1,5 @@
 function nestedFunction2() {
-  let let_func = function() {
+  let let_func = function () {
   let let_x = 'let x';
   }
   return let_func;
diff --git a/test/fixtures/transformation/let-scoping/no-nested-function-declarations/actual.js b/test/fixtures/transformation/let-scoping/no-nested-function-declarations/actual.js
index 880c5290be..dc5a13878d 100644
--- a/test/fixtures/transformation/let-scoping/no-nested-function-declarations/actual.js
+++ b/test/fixtures/transformation/let-scoping/no-nested-function-declarations/actual.js
@@ -2,6 +2,6 @@ var numbers = [1, 2, 3];
 
 for (let i in numbers) {
   function foo() {
-  return i;
+    return i;
   }
 }
diff --git a/test/fixtures/transformation/modules-amd/exports-default/actual.js b/test/fixtures/transformation/modules-amd/exports-default/actual.js
index d7c96201d6..62923e5c15 100644
--- a/test/fixtures/transformation/modules-amd/exports-default/actual.js
+++ b/test/fixtures/transformation/modules-amd/exports-default/actual.js
@@ -5,4 +5,4 @@ export default foo;
 export default function () {}
 export default class {}
 export default function foo () {}
-export default class foo {}
+export default class Foo {}
diff --git a/test/fixtures/transformation/modules-amd/exports-default/expected.js b/test/fixtures/transformation/modules-amd/exports-default/expected.js
index 4f9aa2bd7a..47ac3d0bb3 100644
--- a/test/fixtures/transformation/modules-amd/exports-default/expected.js
+++ b/test/fixtures/transformation/modules-amd/exports-default/expected.js
@@ -5,11 +5,11 @@ define(["exports"], function (exports) {
   exports.default = {};
   exports.default = [];
   exports.default = foo;
-  exports.default = function() {};
+  exports.default = function () {};
+  exports.default = function () {};
+  function foo() {}
+  exports.default = foo;
+  function Foo() {}
 
-  exports.default = function() {};
-
-  exports.default = function foo() {};
-
-  exports.default = function foo() {};
-});
+  exports.default = Foo;
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/exports-from/expected.js b/test/fixtures/transformation/modules-amd/exports-from/expected.js
index c07afa4b5d..a53ede7919 100644
--- a/test/fixtures/transformation/modules-amd/exports-from/expected.js
+++ b/test/fixtures/transformation/modules-amd/exports-from/expected.js
@@ -1,7 +1,7 @@
 define(["exports", "foo"], function (exports, _foo) {
   "use strict";
 
-  (function(obj) {
+  (function (obj) {
     for (var i in obj) {
       exports[i] = obj[i];
     }
@@ -14,4 +14,4 @@ define(["exports", "foo"], function (exports, _foo) {
   exports.default = _foo.foo;
   exports.default = _foo.foo;
   exports.bar = _foo.bar;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/exports-named/expected.js b/test/fixtures/transformation/modules-amd/exports-named/expected.js
index 2bdf3ee4d1..f4b7c61175 100644
--- a/test/fixtures/transformation/modules-amd/exports-named/expected.js
+++ b/test/fixtures/transformation/modules-amd/exports-named/expected.js
@@ -8,4 +8,4 @@ define(["exports"], function (exports) {
   exports.default = foo;
   exports.default = foo;
   exports.bar = bar;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/exports-variable/expected.js b/test/fixtures/transformation/modules-amd/exports-variable/expected.js
index ae135f88f3..74e379fc1a 100644
--- a/test/fixtures/transformation/modules-amd/exports-variable/expected.js
+++ b/test/fixtures/transformation/modules-amd/exports-variable/expected.js
@@ -4,7 +4,7 @@ define(["exports"], function (exports) {
   exports.foo7 = foo7;
   var foo = 1;
   exports.foo = foo;
-  var foo2 = function() {};
+  var foo2 = function () {};
   exports.foo2 = foo2;
   var foo3;
   exports.foo3 = foo3;
@@ -15,8 +15,7 @@ define(["exports"], function (exports) {
   var _foo6 = 3;
   exports.foo6 = _foo6;
   function foo7() {}
-
   var foo8 = function foo8() {};
 
   exports.foo8 = foo8;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/hoist-function-exports/actual.js b/test/fixtures/transformation/modules-amd/hoist-function-exports/actual.js
index aa0f9366ae..d0af5b7592 100644
--- a/test/fixtures/transformation/modules-amd/hoist-function-exports/actual.js
+++ b/test/fixtures/transformation/modules-amd/hoist-function-exports/actual.js
@@ -4,8 +4,8 @@ export function nextOdd(n) {
   return isEven(n) ? n + 1 : n + 2;
 }
 
-export var isOdd = (function(isEven) {
-  return function(n) {
+export var isOdd = (function (isEven) {
+  return function (n) {
   return !isEven(n);
   };
 })(isEven);
diff --git a/test/fixtures/transformation/modules-amd/hoist-function-exports/expected.js b/test/fixtures/transformation/modules-amd/hoist-function-exports/expected.js
index 902cf1a327..c5ab9169c8 100644
--- a/test/fixtures/transformation/modules-amd/hoist-function-exports/expected.js
+++ b/test/fixtures/transformation/modules-amd/hoist-function-exports/expected.js
@@ -3,16 +3,14 @@ define(["exports", "./evens"], function (exports, _evens) {
 
   exports.nextOdd = nextOdd;
   var isEven = _evens.isEven;
-
   function nextOdd(n) {
-    return (isEven(n) ? n + 1 : n + 2);
+    return isEven(n) ? n + 1 : n + 2;
   }
 
-  var isOdd = function(isEven) {
-    return function(n) {
+  var isOdd = (function (isEven) {
+    return function (n) {
       return !isEven(n);
     };
-  }(isEven);
-
+  })(isEven);
   exports.isOdd = isOdd;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/imports-default/expected.js b/test/fixtures/transformation/modules-amd/imports-default/expected.js
index 7febc6bc17..629617760f 100644
--- a/test/fixtures/transformation/modules-amd/imports-default/expected.js
+++ b/test/fixtures/transformation/modules-amd/imports-default/expected.js
@@ -1,5 +1,6 @@
 define(["exports", "foo"], function (exports, _foo) {
   "use strict";
+
   var foo = _foo.default;
   var foo = _foo.default;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/imports-glob/expected.js b/test/fixtures/transformation/modules-amd/imports-glob/expected.js
index 5c42e9d59a..cc03946787 100644
--- a/test/fixtures/transformation/modules-amd/imports-glob/expected.js
+++ b/test/fixtures/transformation/modules-amd/imports-glob/expected.js
@@ -1,4 +1,5 @@
 define(["exports", "foo"], function (exports, _foo) {
   "use strict";
+
   var foo = _foo;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/imports-mixing/expected.js b/test/fixtures/transformation/modules-amd/imports-mixing/expected.js
index 37eced8d5b..1c10b7815a 100644
--- a/test/fixtures/transformation/modules-amd/imports-mixing/expected.js
+++ b/test/fixtures/transformation/modules-amd/imports-mixing/expected.js
@@ -3,4 +3,4 @@ define(["exports", "foo"], function (exports, _foo) {
 
   var foo = _foo.default;
   var xyz = _foo.baz;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/imports-named/expected.js b/test/fixtures/transformation/modules-amd/imports-named/expected.js
index 5a8e29831e..5140508011 100644
--- a/test/fixtures/transformation/modules-amd/imports-named/expected.js
+++ b/test/fixtures/transformation/modules-amd/imports-named/expected.js
@@ -7,4 +7,4 @@ define(["exports", "foo"], function (exports, _foo) {
   var baz = _foo.bar;
   var baz = _foo.bar;
   var xyz = _foo.xyz;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-amd/overview/expected.js b/test/fixtures/transformation/modules-amd/overview/expected.js
index 48f4c57715..1ef8ac9dd3 100644
--- a/test/fixtures/transformation/modules-amd/overview/expected.js
+++ b/test/fixtures/transformation/modules-amd/overview/expected.js
@@ -7,6 +7,7 @@ define(["exports", "foo", "foo-bar", "./directory/foo-bar"], function (exports,
   var bar = _foo.foo;
   exports.test = test;
   var test = 5;
+
   exports.test = test;
   exports.default = test;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/exports-default/actual.js b/test/fixtures/transformation/modules-common/exports-default/actual.js
index d7c96201d6..62923e5c15 100644
--- a/test/fixtures/transformation/modules-common/exports-default/actual.js
+++ b/test/fixtures/transformation/modules-common/exports-default/actual.js
@@ -5,4 +5,4 @@ export default foo;
 export default function () {}
 export default class {}
 export default function foo () {}
-export default class foo {}
+export default class Foo {}
diff --git a/test/fixtures/transformation/modules-common/exports-default/expected.js b/test/fixtures/transformation/modules-common/exports-default/expected.js
index a3a7f93464..ae98bf0118 100644
--- a/test/fixtures/transformation/modules-common/exports-default/expected.js
+++ b/test/fixtures/transformation/modules-common/exports-default/expected.js
@@ -1,12 +1,13 @@
 "use strict";
+
 exports.default = 42;
 exports.default = {};
 exports.default = [];
 exports.default = foo;
-exports.default = function() {};
+exports.default = function () {};
+exports.default = function () {};
+function foo() {}
+exports.default = foo;
+function Foo() {}
 
-exports.default = function() {};
-
-exports.default = function foo() {};
-
-exports.default = function foo() {};
+exports.default = Foo;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/exports-from/expected.js b/test/fixtures/transformation/modules-common/exports-from/expected.js
index 07ad61582b..72c66ea2b0 100644
--- a/test/fixtures/transformation/modules-common/exports-from/expected.js
+++ b/test/fixtures/transformation/modules-common/exports-from/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-(function(obj) {
+(function (obj) {
   for (var i in obj) {
     exports[i] = obj[i];
   }
@@ -12,4 +12,4 @@ exports.bar = require("foo").bar;
 exports.bar = require("foo").foo;
 exports.default = require("foo").foo;
 exports.default = require("foo").foo;
-exports.bar = require("foo").bar;
+exports.bar = require("foo").bar;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/exports-named/expected.js b/test/fixtures/transformation/modules-common/exports-named/expected.js
index 045d242f69..cbd0686693 100644
--- a/test/fixtures/transformation/modules-common/exports-named/expected.js
+++ b/test/fixtures/transformation/modules-common/exports-named/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 exports.foo = foo;
 exports.foo = foo;
 exports.bar = bar;
diff --git a/test/fixtures/transformation/modules-common/exports-variable/expected.js b/test/fixtures/transformation/modules-common/exports-variable/expected.js
index e46d8ef9ef..13891af00d 100644
--- a/test/fixtures/transformation/modules-common/exports-variable/expected.js
+++ b/test/fixtures/transformation/modules-common/exports-variable/expected.js
@@ -1,8 +1,9 @@
 "use strict";
+
 exports.foo7 = foo7;
 var foo = 1;
 exports.foo = foo;
-var foo2 = function() {};
+var foo2 = function () {};
 exports.foo2 = foo2;
 var foo3;
 exports.foo3 = foo3;
@@ -13,7 +14,6 @@ exports.foo5 = _foo5;
 var _foo6 = 3;
 exports.foo6 = _foo6;
 function foo7() {}
-
 var foo8 = function foo8() {};
 
-exports.foo8 = foo8;
+exports.foo8 = foo8;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/hoist-function-exports/actual.js b/test/fixtures/transformation/modules-common/hoist-function-exports/actual.js
index aa0f9366ae..d0af5b7592 100644
--- a/test/fixtures/transformation/modules-common/hoist-function-exports/actual.js
+++ b/test/fixtures/transformation/modules-common/hoist-function-exports/actual.js
@@ -4,8 +4,8 @@ export function nextOdd(n) {
   return isEven(n) ? n + 1 : n + 2;
 }
 
-export var isOdd = (function(isEven) {
-  return function(n) {
+export var isOdd = (function (isEven) {
+  return function (n) {
   return !isEven(n);
   };
 })(isEven);
diff --git a/test/fixtures/transformation/modules-common/hoist-function-exports/expected.js b/test/fixtures/transformation/modules-common/hoist-function-exports/expected.js
index 4eeae9f660..1c5aa19914 100644
--- a/test/fixtures/transformation/modules-common/hoist-function-exports/expected.js
+++ b/test/fixtures/transformation/modules-common/hoist-function-exports/expected.js
@@ -1,15 +1,14 @@
 "use strict";
+
 exports.nextOdd = nextOdd;
 var isEven = require("./evens").isEven;
-
 function nextOdd(n) {
-  return (isEven(n) ? n + 1 : n + 2);
+  return isEven(n) ? n + 1 : n + 2;
 }
 
-var isOdd = function(isEven) {
-  return function(n) {
+var isOdd = (function (isEven) {
+  return function (n) {
     return !isEven(n);
   };
-}(isEven);
-
+})(isEven);
 exports.isOdd = isOdd;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/imports-default/expected.js b/test/fixtures/transformation/modules-common/imports-default/expected.js
index 8543db200a..b91e38f915 100644
--- a/test/fixtures/transformation/modules-common/imports-default/expected.js
+++ b/test/fixtures/transformation/modules-common/imports-default/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var foo = require("foo").default;
 var foo = require("foo").default;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/imports-glob/expected.js b/test/fixtures/transformation/modules-common/imports-glob/expected.js
index eaa887c8f8..e8c2d94a6a 100644
--- a/test/fixtures/transformation/modules-common/imports-glob/expected.js
+++ b/test/fixtures/transformation/modules-common/imports-glob/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = require("foo");
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/imports-mixing/expected.js b/test/fixtures/transformation/modules-common/imports-mixing/expected.js
index 218dbc26f0..6067d90d2b 100644
--- a/test/fixtures/transformation/modules-common/imports-mixing/expected.js
+++ b/test/fixtures/transformation/modules-common/imports-mixing/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var foo = require("foo").default;
-var xyz = require("foo").baz;
+var xyz = require("foo").baz;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/imports-named/expected.js b/test/fixtures/transformation/modules-common/imports-named/expected.js
index 722dfd73aa..ed81790165 100644
--- a/test/fixtures/transformation/modules-common/imports-named/expected.js
+++ b/test/fixtures/transformation/modules-common/imports-named/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var bar = require("foo").bar;
 var bar = require("foo").bar;
 var baz = require("foo").baz;
diff --git a/test/fixtures/transformation/modules-common/imports/expected.js b/test/fixtures/transformation/modules-common/imports/expected.js
index a1d960e91f..2c7c1b2e87 100644
--- a/test/fixtures/transformation/modules-common/imports/expected.js
+++ b/test/fixtures/transformation/modules-common/imports/expected.js
@@ -1,4 +1,7 @@
 "use strict";
+
 require("foo");
+
 require("foo-bar");
+
 require("./directory/foo-bar");
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-common/overview/expected.js b/test/fixtures/transformation/modules-common/overview/expected.js
index 1aeb6bfa36..963c3278c3 100644
--- a/test/fixtures/transformation/modules-common/overview/expected.js
+++ b/test/fixtures/transformation/modules-common/overview/expected.js
@@ -1,12 +1,17 @@
 "use strict";
+
 require("foo");
+
 require("foo-bar");
+
 require("./directory/foo-bar");
+
 var foo = require("foo").default;
 var foo = require("foo");
 var bar = require("foo").bar;
 var bar = require("foo").foo;
 exports.test = test;
 var test = 5;
+
 exports.test = test;
 exports.default = test;
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/exports-default/actual.js b/test/fixtures/transformation/modules-umd/exports-default/actual.js
index d7c96201d6..62923e5c15 100644
--- a/test/fixtures/transformation/modules-umd/exports-default/actual.js
+++ b/test/fixtures/transformation/modules-umd/exports-default/actual.js
@@ -5,4 +5,4 @@ export default foo;
 export default function () {}
 export default class {}
 export default function foo () {}
-export default class foo {}
+export default class Foo {}
diff --git a/test/fixtures/transformation/modules-umd/exports-default/expected.js b/test/fixtures/transformation/modules-umd/exports-default/expected.js
index 1558d65e8e..a666a52746 100644
--- a/test/fixtures/transformation/modules-umd/exports-default/expected.js
+++ b/test/fixtures/transformation/modules-umd/exports-default/expected.js
@@ -11,11 +11,11 @@
   exports.default = {};
   exports.default = [];
   exports.default = foo;
-  exports.default = function() {};
+  exports.default = function () {};
+  exports.default = function () {};
+  function foo() {}
+  exports.default = foo;
+  function Foo() {}
 
-  exports.default = function() {};
-
-  exports.default = function foo() {};
-
-  exports.default = function foo() {};
-});
+  exports.default = Foo;
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/exports-from/expected.js b/test/fixtures/transformation/modules-umd/exports-from/expected.js
index 56b1a7561e..a181d838a9 100644
--- a/test/fixtures/transformation/modules-umd/exports-from/expected.js
+++ b/test/fixtures/transformation/modules-umd/exports-from/expected.js
@@ -7,7 +7,7 @@
 })(function (exports, _foo) {
   "use strict";
 
-  (function(obj) {
+  (function (obj) {
     for (var i in obj) {
       exports[i] = obj[i];
     }
@@ -20,4 +20,4 @@
   exports.default = _foo.foo;
   exports.default = _foo.foo;
   exports.bar = _foo.bar;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/exports-named/expected.js b/test/fixtures/transformation/modules-umd/exports-named/expected.js
index d8a3a136eb..b44a502794 100644
--- a/test/fixtures/transformation/modules-umd/exports-named/expected.js
+++ b/test/fixtures/transformation/modules-umd/exports-named/expected.js
@@ -14,4 +14,4 @@
   exports.default = foo;
   exports.default = foo;
   exports.bar = bar;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/exports-variable/expected.js b/test/fixtures/transformation/modules-umd/exports-variable/expected.js
index 307b548bc6..d77b71490c 100644
--- a/test/fixtures/transformation/modules-umd/exports-variable/expected.js
+++ b/test/fixtures/transformation/modules-umd/exports-variable/expected.js
@@ -10,7 +10,7 @@
   exports.foo7 = foo7;
   var foo = 1;
   exports.foo = foo;
-  var foo2 = function() {};
+  var foo2 = function () {};
   exports.foo2 = foo2;
   var foo3;
   exports.foo3 = foo3;
@@ -21,8 +21,7 @@
   var _foo6 = 3;
   exports.foo6 = _foo6;
   function foo7() {}
-
   var foo8 = function foo8() {};
 
   exports.foo8 = foo8;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/hoist-function-exports/actual.js b/test/fixtures/transformation/modules-umd/hoist-function-exports/actual.js
index aa0f9366ae..d0af5b7592 100644
--- a/test/fixtures/transformation/modules-umd/hoist-function-exports/actual.js
+++ b/test/fixtures/transformation/modules-umd/hoist-function-exports/actual.js
@@ -4,8 +4,8 @@ export function nextOdd(n) {
   return isEven(n) ? n + 1 : n + 2;
 }
 
-export var isOdd = (function(isEven) {
-  return function(n) {
+export var isOdd = (function (isEven) {
+  return function (n) {
   return !isEven(n);
   };
 })(isEven);
diff --git a/test/fixtures/transformation/modules-umd/hoist-function-exports/expected.js b/test/fixtures/transformation/modules-umd/hoist-function-exports/expected.js
index c9afc83ea8..3543c04818 100644
--- a/test/fixtures/transformation/modules-umd/hoist-function-exports/expected.js
+++ b/test/fixtures/transformation/modules-umd/hoist-function-exports/expected.js
@@ -9,16 +9,14 @@
 
   exports.nextOdd = nextOdd;
   var isEven = _evens.isEven;
-
   function nextOdd(n) {
-    return (isEven(n) ? n + 1 : n + 2);
+    return isEven(n) ? n + 1 : n + 2;
   }
 
-  var isOdd = function(isEven) {
-    return function(n) {
+  var isOdd = (function (isEven) {
+    return function (n) {
       return !isEven(n);
     };
-  }(isEven);
-
+  })(isEven);
   exports.isOdd = isOdd;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/imports-default/expected.js b/test/fixtures/transformation/modules-umd/imports-default/expected.js
index 1b3a501cbc..7937c70061 100644
--- a/test/fixtures/transformation/modules-umd/imports-default/expected.js
+++ b/test/fixtures/transformation/modules-umd/imports-default/expected.js
@@ -9,4 +9,4 @@
 
   var foo = _foo.default;
   var foo = _foo.default;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/imports-glob/expected.js b/test/fixtures/transformation/modules-umd/imports-glob/expected.js
index 4a07639cde..45a763f2f2 100644
--- a/test/fixtures/transformation/modules-umd/imports-glob/expected.js
+++ b/test/fixtures/transformation/modules-umd/imports-glob/expected.js
@@ -6,5 +6,6 @@
   }
 })(function (exports, _foo) {
   "use strict";
+
   var foo = _foo;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/imports-mixing/expected.js b/test/fixtures/transformation/modules-umd/imports-mixing/expected.js
index 4dd5c7b377..42e39a9022 100644
--- a/test/fixtures/transformation/modules-umd/imports-mixing/expected.js
+++ b/test/fixtures/transformation/modules-umd/imports-mixing/expected.js
@@ -6,6 +6,7 @@
   }
 })(function (exports, _foo) {
   "use strict";
+
   var foo = _foo.default;
   var xyz = _foo.baz;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/imports-named/expected.js b/test/fixtures/transformation/modules-umd/imports-named/expected.js
index a2bca67e08..2d75892bf6 100644
--- a/test/fixtures/transformation/modules-umd/imports-named/expected.js
+++ b/test/fixtures/transformation/modules-umd/imports-named/expected.js
@@ -6,10 +6,11 @@
   }
 })(function (exports, _foo) {
   "use strict";
+
   var bar = _foo.bar;
   var bar = _foo.bar;
   var baz = _foo.baz;
   var baz = _foo.bar;
   var baz = _foo.bar;
   var xyz = _foo.xyz;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/modules-umd/overview/expected.js b/test/fixtures/transformation/modules-umd/overview/expected.js
index 6c539683dc..931d12fcf0 100644
--- a/test/fixtures/transformation/modules-umd/overview/expected.js
+++ b/test/fixtures/transformation/modules-umd/overview/expected.js
@@ -6,12 +6,14 @@
   }
 })(function (exports, _foo, _fooBar, _directoryFooBar) {
   "use strict";
+
   var foo = _foo.default;
   var foo = _foo;
   var bar = _foo.bar;
   var bar = _foo.foo;
   exports.test = test;
   var test = 5;
+
   exports.test = test;
   exports.default = test;
-});
+});
\ No newline at end of file
diff --git a/test/fixtures/transformation/property-methods-assignment/getter-and-setter/expected.js b/test/fixtures/transformation/property-methods-assignment/getter-and-setter/expected.js
index c357ad0496..ae8adf0c9a 100644
--- a/test/fixtures/transformation/property-methods-assignment/getter-and-setter/expected.js
+++ b/test/fixtures/transformation/property-methods-assignment/getter-and-setter/expected.js
@@ -1,17 +1,14 @@
 "use strict";
 
-var obj = function(_obj) {
-  Object.defineProperties(_obj, {
-    foo: {
-      get: function() {
-        return 5 + 5;
-      },
-
-      set: function(value) {
-        this._foo = value;
-      }
+var obj = (function (_obj) {
+  Object.defineProperties(_obj, { foo: {
+    get: function () {
+      return 5 + 5;
+    },
+    set: function (value) {
+      this._foo = value;
     }
-  });
+  } });
 
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/property-methods-assignment/getter/expected.js b/test/fixtures/transformation/property-methods-assignment/getter/expected.js
index 9a00ceb9ec..1691441c02 100644
--- a/test/fixtures/transformation/property-methods-assignment/getter/expected.js
+++ b/test/fixtures/transformation/property-methods-assignment/getter/expected.js
@@ -1,13 +1,9 @@
 "use strict";
 
-var obj = function(_obj) {
-  Object.defineProperties(_obj, {
-    foo: {
-      get: function() {
-        return 5 + 5;
-      }
-    }
-  });
+var obj = (function (_obj) {
+  Object.defineProperties(_obj, { foo: { get: function () {
+    return 5 + 5;
+  } } });
 
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/property-methods-assignment/method/expected.js b/test/fixtures/transformation/property-methods-assignment/method/expected.js
index a78e3e92d8..d70e8989ac 100644
--- a/test/fixtures/transformation/property-methods-assignment/method/expected.js
+++ b/test/fixtures/transformation/property-methods-assignment/method/expected.js
@@ -1,7 +1,5 @@
 "use strict";
 
-var obj = {
-  method: function() {
-    return 5 + 5;
-  }
-};
\ No newline at end of file
+var obj = { method: function () {
+  return 5 + 5;
+} };
\ No newline at end of file
diff --git a/test/fixtures/transformation/property-methods-assignment/setter/expected.js b/test/fixtures/transformation/property-methods-assignment/setter/expected.js
index 843982efa2..f3ee6caefc 100644
--- a/test/fixtures/transformation/property-methods-assignment/setter/expected.js
+++ b/test/fixtures/transformation/property-methods-assignment/setter/expected.js
@@ -1,13 +1,9 @@
 "use strict";
 
-var obj = function(_obj) {
-  Object.defineProperties(_obj, {
-    foo: {
-      set: function(value) {
-        this._foo = value;
-      }
-    }
-  });
+var obj = (function (_obj) {
+  Object.defineProperties(_obj, { foo: { set: function (value) {
+    this._foo = value;
+  } } });
 
   return _obj;
-}({});
\ No newline at end of file
+})({});
\ No newline at end of file
diff --git a/test/fixtures/transformation/property-name-shorthand/single/expected.js b/test/fixtures/transformation/property-name-shorthand/single/expected.js
index c8d904ff0e..d0bd0eaa68 100644
--- a/test/fixtures/transformation/property-name-shorthand/single/expected.js
+++ b/test/fixtures/transformation/property-name-shorthand/single/expected.js
@@ -1,5 +1,3 @@
 "use strict";
 
-var coords = {
-  x: x
-};
\ No newline at end of file
+var coords = { x: x };
\ No newline at end of file
diff --git a/test/fixtures/transformation/react/display-name-assignment-expression/actual.js b/test/fixtures/transformation/react/display-name-assignment-expression/actual.js
index f3affde052..7a91ae99d3 100644
--- a/test/fixtures/transformation/react/display-name-assignment-expression/actual.js
+++ b/test/fixtures/transformation/react/display-name-assignment-expression/actual.js
@@ -1,6 +1,6 @@
 var Component;
 Component = React.createClass({
-  render: function() {
+  render: function () {
   return null;
   }
 });
diff --git a/test/fixtures/transformation/react/display-name-assignment-expression/expected.js b/test/fixtures/transformation/react/display-name-assignment-expression/expected.js
index 0096748e3d..6d69f27a7a 100644
--- a/test/fixtures/transformation/react/display-name-assignment-expression/expected.js
+++ b/test/fixtures/transformation/react/display-name-assignment-expression/expected.js
@@ -1,10 +1,9 @@
 "use strict";
-var Component;
 
+var Component;
 Component = React.createClass({
   displayName: "Component",
-
-  render: function() {
+  render: function () {
     return null;
   }
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/react/display-name-if-missing/actual.js b/test/fixtures/transformation/react/display-name-if-missing/actual.js
index 4232881d66..501a447782 100644
--- a/test/fixtures/transformation/react/display-name-if-missing/actual.js
+++ b/test/fixtures/transformation/react/display-name-if-missing/actual.js
@@ -1,6 +1,6 @@
 var Whateva = React.createClass({
   displayName: "Whatever",
-  render: function() {
+  render: function () {
   return null;
   }
 });
diff --git a/test/fixtures/transformation/react/display-name-if-missing/expected.js b/test/fixtures/transformation/react/display-name-if-missing/expected.js
index e802413800..2ef17aa97c 100644
--- a/test/fixtures/transformation/react/display-name-if-missing/expected.js
+++ b/test/fixtures/transformation/react/display-name-if-missing/expected.js
@@ -2,8 +2,7 @@
 
 var Whateva = React.createClass({
   displayName: "Whatever",
-
-  render: function() {
+  render: function () {
     return null;
   }
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/react/display-name-object-declaration/actual.js b/test/fixtures/transformation/react/display-name-object-declaration/actual.js
index 51a000a533..b00fb85bde 100644
--- a/test/fixtures/transformation/react/display-name-object-declaration/actual.js
+++ b/test/fixtures/transformation/react/display-name-object-declaration/actual.js
@@ -1,6 +1,6 @@
 exports = {
   Component: React.createClass({
-  render: function() {
+  render: function () {
     return null;
   }
   })
diff --git a/test/fixtures/transformation/react/display-name-object-declaration/expected.js b/test/fixtures/transformation/react/display-name-object-declaration/expected.js
index cde3afa785..6986b8ba92 100644
--- a/test/fixtures/transformation/react/display-name-object-declaration/expected.js
+++ b/test/fixtures/transformation/react/display-name-object-declaration/expected.js
@@ -1,11 +1,8 @@
 "use strict";
 
-exports = {
-  Component: React.createClass({
-    displayName: "Component",
-
-    render: function() {
-      return null;
-    }
-  })
-};
\ No newline at end of file
+exports = { Component: React.createClass({
+  displayName: "Component",
+  render: function () {
+    return null;
+  }
+}) };
\ No newline at end of file
diff --git a/test/fixtures/transformation/react/display-name-property-assignment/actual.js b/test/fixtures/transformation/react/display-name-property-assignment/actual.js
index f856d33f07..88f7a1df11 100644
--- a/test/fixtures/transformation/react/display-name-property-assignment/actual.js
+++ b/test/fixtures/transformation/react/display-name-property-assignment/actual.js
@@ -1,5 +1,5 @@
 exports.Component = React.createClass({
-  render: function() {
+  render: function () {
   return null;
   }
 });
diff --git a/test/fixtures/transformation/react/display-name-property-assignment/expected.js b/test/fixtures/transformation/react/display-name-property-assignment/expected.js
index ca445b30a1..e174173e41 100644
--- a/test/fixtures/transformation/react/display-name-property-assignment/expected.js
+++ b/test/fixtures/transformation/react/display-name-property-assignment/expected.js
@@ -2,8 +2,7 @@
 
 exports.Component = React.createClass({
   displayName: "Component",
-
-  render: function() {
+  render: function () {
     return null;
   }
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/react/display-name-variable-declaration/actual.js b/test/fixtures/transformation/react/display-name-variable-declaration/actual.js
index e751186def..e352fe5706 100644
--- a/test/fixtures/transformation/react/display-name-variable-declaration/actual.js
+++ b/test/fixtures/transformation/react/display-name-variable-declaration/actual.js
@@ -1,5 +1,5 @@
 var Component = React.createClass({
-  render: function() {
+  render: function () {
   return null;
   }
 });
diff --git a/test/fixtures/transformation/react/display-name-variable-declaration/expected.js b/test/fixtures/transformation/react/display-name-variable-declaration/expected.js
index 60d186b8dd..505d82ae8b 100644
--- a/test/fixtures/transformation/react/display-name-variable-declaration/expected.js
+++ b/test/fixtures/transformation/react/display-name-variable-declaration/expected.js
@@ -2,8 +2,7 @@
 
 var Component = React.createClass({
   displayName: "Component",
-
-  render: function() {
+  render: function () {
     return null;
   }
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/rest-parameters/arrow-functions/expected.js b/test/fixtures/transformation/rest-parameters/arrow-functions/expected.js
index ede93ea6e7..641879f5cf 100644
--- a/test/fixtures/transformation/rest-parameters/arrow-functions/expected.js
+++ b/test/fixtures/transformation/rest-parameters/arrow-functions/expected.js
@@ -1,5 +1,6 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
 var concat = function () {
   var arrs = _slice.call(arguments);
-};
+};
\ No newline at end of file
diff --git a/test/fixtures/transformation/rest-parameters/multiple/expected.js b/test/fixtures/transformation/rest-parameters/multiple/expected.js
index b9f8d1687b..70f87316c0 100644
--- a/test/fixtures/transformation/rest-parameters/multiple/expected.js
+++ b/test/fixtures/transformation/rest-parameters/multiple/expected.js
@@ -1,7 +1,7 @@
 "use strict";
-var _slice = Array.prototype.slice;
 
-var t = function(f) {
+var _slice = Array.prototype.slice;
+var t = function (f) {
   var items = _slice.call(arguments, 1);
 };
 
diff --git a/test/fixtures/transformation/rest-parameters/single/expected.js b/test/fixtures/transformation/rest-parameters/single/expected.js
index d45c7f4c40..ef6466c8b0 100644
--- a/test/fixtures/transformation/rest-parameters/single/expected.js
+++ b/test/fixtures/transformation/rest-parameters/single/expected.js
@@ -1,7 +1,7 @@
 "use strict";
-var _slice = Array.prototype.slice;
 
-var t = function() {
+var _slice = Array.prototype.slice;
+var t = function () {
   var items = _slice.call(arguments);
 };
 
diff --git a/test/fixtures/transformation/source-maps/arrow-function/expected.js b/test/fixtures/transformation/source-maps/arrow-function/expected.js
index d39e2afebe..2974ebc2a4 100644
--- a/test/fixtures/transformation/source-maps/arrow-function/expected.js
+++ b/test/fixtures/transformation/source-maps/arrow-function/expected.js
@@ -1,4 +1,5 @@
 "use strict";
-var t = function(x) {
+
+var t = function (x) {
   return x * x;
-};
+};
\ No newline at end of file
diff --git a/test/fixtures/transformation/source-maps/arrow-function/source-mappings.json b/test/fixtures/transformation/source-maps/arrow-function/source-mappings.json
index 02a7a17ee3..d6c4b7d064 100644
--- a/test/fixtures/transformation/source-maps/arrow-function/source-mappings.json
+++ b/test/fixtures/transformation/source-maps/arrow-function/source-mappings.json
@@ -4,7 +4,7 @@
     "column": 18
   },
   "generated": {
-    "line": 3,
+    "line": 4,
     "column": 14
   }
 }]
diff --git a/test/fixtures/transformation/source-maps/class/expected.js b/test/fixtures/transformation/source-maps/class/expected.js
index 0706f1a8d6..1c7c0b2d2f 100644
--- a/test/fixtures/transformation/source-maps/class/expected.js
+++ b/test/fixtures/transformation/source-maps/class/expected.js
@@ -1,14 +1,19 @@
 "use strict";
+
 var _classProps = function (child, staticProps, instanceProps) {
   if (staticProps) Object.defineProperties(child, staticProps);
   if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
 };
+
 var Test = (function () {
   var Test = function Test() {};
+
   _classProps(Test, null, { bar: { get: function () {
     throw new Error("wow");
   } } });
+
   return Test;
 })();
+
 var test = new Test;
-test.bar;
+test.bar;
\ No newline at end of file
diff --git a/test/fixtures/transformation/source-maps/class/source-mappings.json b/test/fixtures/transformation/source-maps/class/source-mappings.json
index 9632b0c4eb..594ce68ed8 100644
--- a/test/fixtures/transformation/source-maps/class/source-mappings.json
+++ b/test/fixtures/transformation/source-maps/class/source-mappings.json
@@ -4,7 +4,7 @@
     "column": 11
   },
   "generated": {
-    "line": 9,
+    "line": 12,
     "column": 11
   }
 }]
diff --git a/test/fixtures/transformation/source-maps/full/expected.js b/test/fixtures/transformation/source-maps/full/expected.js
index 9691f5dcbf..b38b216584 100644
--- a/test/fixtures/transformation/source-maps/full/expected.js
+++ b/test/fixtures/transformation/source-maps/full/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-arr.map(function(x) {
+arr.map(function (x) {
   return x * x;
 });
\ No newline at end of file
diff --git a/test/fixtures/transformation/source-maps/inline/expected.js b/test/fixtures/transformation/source-maps/inline/expected.js
index 9691f5dcbf..e136af8d90 100644
--- a/test/fixtures/transformation/source-maps/inline/expected.js
+++ b/test/fixtures/transformation/source-maps/inline/expected.js
@@ -1,5 +1,5 @@
 "use strict";
 
-arr.map(function(x) {
+arr.map(function (x) {
   return x * x;
-});
\ No newline at end of file
+});
diff --git a/test/fixtures/transformation/spread/arguments/expected.js b/test/fixtures/transformation/spread/arguments/expected.js
index 18080d5978..7b910095cf 100644
--- a/test/fixtures/transformation/spread/arguments/expected.js
+++ b/test/fixtures/transformation/spread/arguments/expected.js
@@ -1,6 +1,6 @@
 "use strict";
-var _slice = Array.prototype.slice;
 
+var _slice = Array.prototype.slice;
 function foo() {
   return bar.apply(null, ["test"].concat(_slice.call(arguments)));
 }
diff --git a/test/fixtures/transformation/spread/array-literal-first/expected.js b/test/fixtures/transformation/spread/array-literal-first/expected.js
index ef93019076..92ba7217fa 100644
--- a/test/fixtures/transformation/spread/array-literal-first/expected.js
+++ b/test/fixtures/transformation/spread/array-literal-first/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-var lyrics = _slice.call(parts).concat(["head", "and", "toes"]);
+var lyrics = _slice.call(parts).concat(["head", "and", "toes"]);
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/array-literal-middle/expected.js b/test/fixtures/transformation/spread/array-literal-middle/expected.js
index 70e1aef3cc..a7085e299e 100644
--- a/test/fixtures/transformation/spread/array-literal-middle/expected.js
+++ b/test/fixtures/transformation/spread/array-literal-middle/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-var a = [b].concat(_slice.call(c), [d]);
+var a = [b].concat(_slice.call(c), [d]);
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/array-literal-multiple/expected.js b/test/fixtures/transformation/spread/array-literal-multiple/expected.js
index 4e9bc9f415..281faa0a0b 100644
--- a/test/fixtures/transformation/spread/array-literal-multiple/expected.js
+++ b/test/fixtures/transformation/spread/array-literal-multiple/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-var a = [b].concat(_slice.call(c), [d, e], _slice.call(f));
+var a = [b].concat(_slice.call(c), [d, e], _slice.call(f));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/array-literals/expected.js b/test/fixtures/transformation/spread/array-literals/expected.js
index 4cc07d91a9..306c74e11e 100644
--- a/test/fixtures/transformation/spread/array-literals/expected.js
+++ b/test/fixtures/transformation/spread/array-literals/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
 var lyrics = ["head", "and", "toes"].concat(_slice.call(parts));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/contexted-computed-method-call-multiple-args/expected.js b/test/fixtures/transformation/spread/contexted-computed-method-call-multiple-args/expected.js
index 1d5363f0d0..b169ad461e 100644
--- a/test/fixtures/transformation/spread/contexted-computed-method-call-multiple-args/expected.js
+++ b/test/fixtures/transformation/spread/contexted-computed-method-call-multiple-args/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-obj[method].apply(obj, [foo, bar].concat(_slice.call(args)));
+obj[method].apply(obj, [foo, bar].concat(_slice.call(args)));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/contexted-computed-method-call-single-arg/expected.js b/test/fixtures/transformation/spread/contexted-computed-method-call-single-arg/expected.js
index ced58a87d6..1baae55982 100644
--- a/test/fixtures/transformation/spread/contexted-computed-method-call-single-arg/expected.js
+++ b/test/fixtures/transformation/spread/contexted-computed-method-call-single-arg/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-obj[method].apply(obj, _slice.call(args));
+obj[method].apply(obj, _slice.call(args));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/contexted-method-call-multiple-args/expected.js b/test/fixtures/transformation/spread/contexted-method-call-multiple-args/expected.js
index 860638d174..cda8769889 100644
--- a/test/fixtures/transformation/spread/contexted-method-call-multiple-args/expected.js
+++ b/test/fixtures/transformation/spread/contexted-method-call-multiple-args/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
 foob.add.apply(foob, [foo, bar].concat(_slice.call(numbers)));
 foob.test.add.apply(foob.test, [foo, bar].concat(_slice.call(numbers)));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/contexted-method-call-single-arg/expected.js b/test/fixtures/transformation/spread/contexted-method-call-single-arg/expected.js
index d2a488b1fe..9d0c650a61 100644
--- a/test/fixtures/transformation/spread/contexted-method-call-single-arg/expected.js
+++ b/test/fixtures/transformation/spread/contexted-method-call-single-arg/expected.js
@@ -1,4 +1,5 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
 foob.add.apply(foob, _slice.call(numbers));
 foob.test.add.apply(foob.test, _slice.call(numbers));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/method-call-array-literal/expected.js b/test/fixtures/transformation/spread/method-call-array-literal/expected.js
index 8824a0d8eb..fb0bae3ea8 100644
--- a/test/fixtures/transformation/spread/method-call-array-literal/expected.js
+++ b/test/fixtures/transformation/spread/method-call-array-literal/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 f.apply(null, [1, 2, 3]);
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/method-call-first/expected.js b/test/fixtures/transformation/spread/method-call-first/expected.js
index 82d56c4065..45b93b3cc8 100644
--- a/test/fixtures/transformation/spread/method-call-first/expected.js
+++ b/test/fixtures/transformation/spread/method-call-first/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-add.apply(null, _slice.call(numbers).concat([foo, bar]));
+add.apply(null, _slice.call(numbers).concat([foo, bar]));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/method-call-middle/expected.js b/test/fixtures/transformation/spread/method-call-middle/expected.js
index 16b1508097..9df2185466 100644
--- a/test/fixtures/transformation/spread/method-call-middle/expected.js
+++ b/test/fixtures/transformation/spread/method-call-middle/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-add.apply(null, [foo].concat(_slice.call(numbers), [bar]));
+add.apply(null, [foo].concat(_slice.call(numbers), [bar]));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/method-call-multiple-args/expected.js b/test/fixtures/transformation/spread/method-call-multiple-args/expected.js
index 5ae73e4362..7f0b028cd9 100644
--- a/test/fixtures/transformation/spread/method-call-multiple-args/expected.js
+++ b/test/fixtures/transformation/spread/method-call-multiple-args/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
 add.apply(null, [foo, bar].concat(_slice.call(numbers)));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/method-call-multiple/expected.js b/test/fixtures/transformation/spread/method-call-multiple/expected.js
index 69096bc7bd..a340d3c2f6 100644
--- a/test/fixtures/transformation/spread/method-call-multiple/expected.js
+++ b/test/fixtures/transformation/spread/method-call-multiple/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
-add.apply(null, [foo].concat(_slice.call(numbers), [bar, what], _slice.call(test)));
+add.apply(null, [foo].concat(_slice.call(numbers), [bar, what], _slice.call(test)));
\ No newline at end of file
diff --git a/test/fixtures/transformation/spread/method-call-single-arg/expected.js b/test/fixtures/transformation/spread/method-call-single-arg/expected.js
index 391b08d8c7..d0c52b6d23 100644
--- a/test/fixtures/transformation/spread/method-call-single-arg/expected.js
+++ b/test/fixtures/transformation/spread/method-call-single-arg/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var _slice = Array.prototype.slice;
 add.apply(null, _slice.call(numbers));
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/escape-quotes/expected.js b/test/fixtures/transformation/template-literals/escape-quotes/expected.js
index 7d90c09a11..57381d318b 100644
--- a/test/fixtures/transformation/template-literals/escape-quotes/expected.js
+++ b/test/fixtures/transformation/template-literals/escape-quotes/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var t = "'" + foo + "' \"" + bar + "\"";
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/functions/expected.js b/test/fixtures/transformation/template-literals/functions/expected.js
index acb11d17f2..70ce864f59 100644
--- a/test/fixtures/transformation/template-literals/functions/expected.js
+++ b/test/fixtures/transformation/template-literals/functions/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = "test " + _.test(foo) + " " + bar;
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/multiline/expected.js b/test/fixtures/transformation/template-literals/multiline/expected.js
index d90ae15a5a..f8cfb32013 100644
--- a/test/fixtures/transformation/template-literals/multiline/expected.js
+++ b/test/fixtures/transformation/template-literals/multiline/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var o = "wow\nthis is\nactually multiline!";
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/multiple/expected.js b/test/fixtures/transformation/template-literals/multiple/expected.js
index 1f39dda64e..8ebe48a409 100644
--- a/test/fixtures/transformation/template-literals/multiple/expected.js
+++ b/test/fixtures/transformation/template-literals/multiple/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = "test " + foo + " " + bar;
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/none/expected.js b/test/fixtures/transformation/template-literals/none/expected.js
index 312ad1893b..5736960a49 100644
--- a/test/fixtures/transformation/template-literals/none/expected.js
+++ b/test/fixtures/transformation/template-literals/none/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = "test";
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/only/expected.js b/test/fixtures/transformation/template-literals/only/expected.js
index 8a26c6537b..4ab29f3954 100644
--- a/test/fixtures/transformation/template-literals/only/expected.js
+++ b/test/fixtures/transformation/template-literals/only/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = "" + test;
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/single/expected.js b/test/fixtures/transformation/template-literals/single/expected.js
index d177f7c6a7..8e5c50be59 100644
--- a/test/fixtures/transformation/template-literals/single/expected.js
+++ b/test/fixtures/transformation/template-literals/single/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = "test " + foo;
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/statement/expected.js b/test/fixtures/transformation/template-literals/statement/expected.js
index 6714f83af2..792d3806f3 100644
--- a/test/fixtures/transformation/template-literals/statement/expected.js
+++ b/test/fixtures/transformation/template-literals/statement/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = "test " + (foo + bar);
\ No newline at end of file
diff --git a/test/fixtures/transformation/template-literals/tag/expected.js b/test/fixtures/transformation/template-literals/tag/expected.js
index a33273a08c..cff3164497 100644
--- a/test/fixtures/transformation/template-literals/tag/expected.js
+++ b/test/fixtures/transformation/template-literals/tag/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 var foo = bar(["a", "b ", ""], 42, _.foobar());
\ No newline at end of file
diff --git a/test/fixtures/transformation/unicode-regex/basic/expected.js b/test/fixtures/transformation/unicode-regex/basic/expected.js
index 130460934d..9a67fcdf95 100644
--- a/test/fixtures/transformation/unicode-regex/basic/expected.js
+++ b/test/fixtures/transformation/unicode-regex/basic/expected.js
@@ -1,6 +1,4 @@
 "use strict";
-var string = "foo💩bar";
 
-var match = string.match(
-  /foo((?:[\0-\t\x0B\f\x0E-\u2027\u202A-\uD7FF\uDC00-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF]))bar/
-);
\ No newline at end of file
+var string = "foo💩bar";
+var match = string.match(/foo((?:[\0-\t\x0B\f\x0E-\u2027\u202A-\uD7FF\uDC00-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF]))bar/);
\ No newline at end of file
diff --git a/test/fixtures/transformation/unicode-regex/ignore-non-unicode/expected.js b/test/fixtures/transformation/unicode-regex/ignore-non-unicode/expected.js
index 629ac66ff4..a24792c6e5 100644
--- a/test/fixtures/transformation/unicode-regex/ignore-non-unicode/expected.js
+++ b/test/fixtures/transformation/unicode-regex/ignore-non-unicode/expected.js
@@ -1,3 +1,4 @@
 "use strict";
+
 var string = "foo💩bar";
 var match = string.match(/foo(.)bar/);
\ No newline at end of file
diff --git a/test/fixtures/transformation/use-strict/add/expected.js b/test/fixtures/transformation/use-strict/add/expected.js
index bcf0a73352..4afd33e9c5 100644
--- a/test/fixtures/transformation/use-strict/add/expected.js
+++ b/test/fixtures/transformation/use-strict/add/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 foo();
\ No newline at end of file
diff --git a/test/fixtures/transformation/use-strict/exists/expected.js b/test/fixtures/transformation/use-strict/exists/expected.js
index bcf0a73352..4afd33e9c5 100644
--- a/test/fixtures/transformation/use-strict/exists/expected.js
+++ b/test/fixtures/transformation/use-strict/exists/expected.js
@@ -1,2 +1,3 @@
 "use strict";
+
 foo();
\ No newline at end of file