add closure around let scoping return tests

test/fixtures/transformation/es6-let-scoping/for-break-continue-return/actual.js

@@ -1,10 +1,12 @@
-for (let i in nums) {
-  fns.push(function () { return i; });
-  if (i === 1) {
-    continue;
-  } else if (i === 2) {
-    break;
-  } else if (i === 3) {
-    return i;
+(function () {
+  for (let i in nums) {
+    fns.push(function () { return i; });
+    if (i === 1) {
+      continue;
+    } else if (i === 2) {
+      break;
+    } else if (i === 3) {
+      return i;
+    }
   }
-}
+})();

test/fixtures/transformation/es6-let-scoping/for-break-continue-return/expected.js

@@ -1,27 +1,29 @@
 "use strict";
 
-_loop: for (var i in nums) {
-  var _ret = (function (i) {
-    fns.push(function () {
-      return i;
-    });
-    if (i === 1) {
-      return "continue";
-    } else if (i === 2) {
-      return "break";
-    } else if (i === 3) {
-      return {
-        v: i
-      };
-    }
-  })(i);
+(function () {
+  _loop: for (var i in nums) {
+    var _ret = (function (i) {
+      fns.push(function () {
+        return i;
+      });
+      if (i === 1) {
+        return "continue";
+      } else if (i === 2) {
+        return "break";
+      } else if (i === 3) {
+        return {
+          v: i
+        };
+      }
+    })(i);
 
-  switch (_ret) {
-    case "break":
-      break _loop;
-    case "continue":
-      continue _loop;
-    default:
-      if (typeof _ret === "object") return _ret.v;
+    switch (_ret) {
+      case "break":
+        break _loop;
+      case "continue":
+        continue _loop;
+      default:
+        if (typeof _ret === "object") return _ret.v;
+    }
   }
-}
+})();

test/fixtures/transformation/es6-let-scoping/for-return-undefined/actual.js

@@ -1,4 +1,6 @@
-for (let i in nums) {
-  fns.push(function () { return i; });
-  return;
-}
+(function () {
+  for (let i in nums) {
+    fns.push(function () { return i; });
+    return;
+  }
+})();

test/fixtures/transformation/es6-let-scoping/for-return-undefined/expected.js

@@ -1,14 +1,16 @@
 "use strict";
 
-for (var i in nums) {
-  var _ret = (function (i) {
-    fns.push(function () {
-      return i;
-    });
-    return {
-      v: undefined
-    };
-  })(i);
+(function () {
+  for (var i in nums) {
+    var _ret = (function (i) {
+      fns.push(function () {
+        return i;
+      });
+      return {
+        v: undefined
+      };
+    })(i);
 
-  if (typeof _ret === "object") return _ret.v;
-}
+    if (typeof _ret === "object") return _ret.v;
+  }
+})();

test/fixtures/transformation/es6-let-scoping/for-return/actual.js

@@ -1,4 +1,6 @@
-for (let i in nums) {
-  fns.push(function () { return i; });
-  return i;
-}
+(function () {
+  for (let i in nums) {
+    fns.push(function () { return i; });
+    return i;
+  }
+})();

test/fixtures/transformation/es6-let-scoping/for-return/expected.js

@@ -1,14 +1,16 @@
 "use strict";
 
-for (var i in nums) {
-  var _ret = (function (i) {
-    fns.push(function () {
-      return i;
-    });
-    return {
-      v: i
-    };
-  })(i);
+(function () {
+  for (var i in nums) {
+    var _ret = (function (i) {
+      fns.push(function () {
+        return i;
+      });
+      return {
+        v: i
+      };
+    })(i);
 
-  if (typeof _ret === "object") return _ret.v;
-}
+    if (typeof _ret === "object") return _ret.v;
+  }
+})();