v3.6.3

CHANGELOG.md

@@ -11,6 +11,16 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 3.6.3
+
+ * **Internal**
+  * Upgrade `acorn-6to5`.
+
+## 3.6.2
+
+ * **Polish**
+  * Use better iterator detection in `slicedToArray` helper and add support for it to the `selfContained` transformer.
+
 ## 3.6.1
 
  * **Bug Fix**

bin/6to5/dir.js

@@ -16,7 +16,9 @@ module.exports = function (commander, filenames, opts) {
 
     var dest = path.join(commander.outDir, relative);
 
-    var data = util.compile(src, { sourceMapName: dest });
+    var data = util.compile(src, {
+      sourceFileName: path.relative(dest + "/..", src)
+    });
 
     if (commander.sourceMaps) {
       var mapLoc = dest + ".map";

bin/6to5/util.js

@@ -21,7 +21,7 @@ exports.addSourceMappingUrl = function (code, loc) {
 };
 
 exports.transform = function (filename, code, opts) {
-  opts = _.extend(opts || {}, index.opts);
+  opts = _.defaults(opts || {}, index.opts);
   opts.filename = filename;
 
   var result;

lib/6to5/transformation/file.js

@@ -18,9 +18,10 @@ var each       = require("lodash/collection/each");
 var t          = require("../types");
 
 function File(opts) {
-  this.dynamicImportIds = {};
-  this.dynamicImported  = [];
-  this.dynamicImports   = [];
+  this.dynamicImportedNoDefault = [];
+  this.dynamicImportIds         = {};
+  this.dynamicImported          = [];
+  this.dynamicImports           = [];
 
   this.dynamicData      = {};
   this.data             = {};
@@ -273,7 +274,7 @@ File.prototype.get = function (key) {
   }
 };
 
-File.prototype.addImport = function (source, name) {
+File.prototype.addImport = function (source, name, noDefault) {
   name = name || source;
   var id = this.dynamicImportIds[name];
 
@@ -283,7 +284,9 @@ File.prototype.addImport = function (source, name) {
     var specifiers = [t.importSpecifier(t.identifier("default"), id)];
     var declar = t.importDeclaration(specifiers, t.literal(source));
     declar._blockHoist = 3;
+
     this.dynamicImported.push(declar);
+    if (noDefault) this.dynamicImportedNoDefault.push(declar);
 
     this.moduleFormatter.importSpecifier(specifiers[0], declar, this.dynamicImports);
   }

lib/6to5/transformation/modules/amd.js

@@ -4,10 +4,10 @@ module.exports = AMDFormatter;
 
 var DefaultFormatter = require("./_default");
 var CommonFormatter  = require("./common");
-var util             = require("../../util");
-var t                = require("../../types");
 var includes         = require("lodash/collection/includes");
 var values           = require("lodash/object/values");
+var util             = require("../../util");
+var t                = require("../../types");
 
 function AMDFormatter() {
   CommonFormatter.apply(this, arguments);
@@ -81,12 +81,12 @@ AMDFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
   var key = t.getSpecifierName(specifier);
   var ref = this.getExternalReference(node);
 
-  if (includes(this.file.dynamicImported, node)) {
+  if (includes(this.file.dynamicImportedNoDefault, node)) {
     // Prevent unnecessary renaming of dynamic imports.
     this.ids[node.source.value] = ref;
   } else if (t.isImportBatchSpecifier(specifier)) {
     // import * as bar from "foo";
-  } else if (t.isSpecifierDefault(specifier) && !this.noInteropRequireImport) {
+  } else if (!includes(this.file.dynamicImported, node) && t.isSpecifierDefault(specifier) && !this.noInteropRequireImport) {
     // import foo from "foo";
     ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
   } else {

lib/6to5/transformation/modules/common.js

@@ -31,8 +31,8 @@ CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes)
 
   // import foo from "foo";
   if (t.isSpecifierDefault(specifier)) {
-    if (!includes(this.file.dynamicImported, node)) {
-      if (this.noInteropRequireImport) {
+    if (!includes(this.file.dynamicImportedNoDefault, node)) {
+      if (this.noInteropRequireImport || includes(this.file.dynamicImported, node)) {
         ref = t.memberExpression(ref, t.identifier("default"));
       } else {
         ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);

lib/6to5/transformation/templates/corejs-is-iterator.js

@@ -0,0 +1 @@
+CORE_ID.$for.isIterable(VALUE);

lib/6to5/transformation/templates/self-contained-helpers-head.js

@@ -0,0 +1,2 @@
+var helpers = exports.default = {};
+exports.__esModule = true;

lib/6to5/transformation/templates/sliced-to-array.js

@@ -1,14 +1,14 @@
 (function (arr, i) {
-  if (!arr || !arr[Symbol.iterator]) {
-    throw new TypeError("Invalid attempt to destructure non-iterable instance");
-  } else if (Array.isArray(arr)) {
+  if (Array.isArray(arr)) {
     return arr;
-  } else {
+  } else if (Symbol.iterator in Object(arr)) {
     var _arr = [];
     for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
       _arr.push(_step.value);
       if (i && _arr.length === i) break;
     }
     return _arr;
+  } else {
+    throw new TypeError("Invalid attempt to destructure non-iterable instance");
   }
 });

lib/6to5/transformation/transformer.js

@@ -55,6 +55,8 @@ Transformer.prototype.normalize = function (transformer) {
       return;
     }
 
+    if (type === "enter" || type === "exit") return;
+
     if (isFunction(fns)) fns = { enter: fns };
 
     if (!isObject(fns)) return;

lib/6to5/transformation/transformers/es6/constants.js

@@ -10,8 +10,6 @@ exports.check = function (node) {
 var visitor = {
   enter: function (node, parent, scope, state) {
     if (t.isAssignmentExpression(node) || t.isUpdateExpression(node)) {
-      if (t.isMemberExpression(node.left || node.argument)) return;
-
       var ids = t.getBindingIdentifiers(node);
 
       for (var name in ids) {

lib/6to5/transformation/transformers/index.js

@@ -86,11 +86,12 @@ module.exports = {
   _declarations:                           require("./internal/declarations"),
 
   _aliasFunctions:                         require("./internal/alias-functions"),
-  _moduleFormatter:                        require("./internal/module-formatter"),
 
   "spec.typeofSymbol":                     require("./spec/typeof-symbol"),
   "spec.undefinedToVoid":                  require("./spec/undefined-to-void"),
 
+  _moduleFormatter:                        require("./internal/module-formatter"),
+
   "es3.propertyLiterals":                  require("./es3/property-literals"),
   "es3.memberExpressionLiterals":          require("./es3/member-expression-literals"),
 

lib/6to5/transformation/transformers/internal/module-formatter.js

@@ -2,11 +2,9 @@
 
 var useStrict = require("../../helpers/use-strict");
 
-exports.post = function (file) {
+exports.Program = function (program, parent, scope, file) {
   if (!file.transformers["es6.modules"].canRun()) return;
 
-  var program = file.ast.program;
-
   useStrict.wrap(program, function () {
     program.body = file.dynamicImports.concat(program.body);
   });

lib/6to5/transformation/transformers/other/bluebird-coroutines.js

@@ -15,7 +15,7 @@ exports.Function = function (node, parent, scope, file) {
 
   return remapAsyncToGenerator(
     node,
-    t.memberExpression(file.addImport("bluebird"), t.identifier("coroutine")),
+    t.memberExpression(file.addImport("bluebird", null, true), t.identifier("coroutine")),
     scope
   );
 };

lib/6to5/transformation/transformers/other/self-contained.js

@@ -40,20 +40,34 @@ var astVisitor = {
     } else if (t.isCallExpression(node)) {
       // arr[Symbol.iterator]() -> _core.$for.getIterator(arr)
 
-      if (node.arguments.length) return;
-
       var callee = node.callee;
-      if (!t.isMemberExpression(callee)) return;
-      if (!callee.computed) return;
+      if (node.arguments.length) return false;
+
+      if (!t.isMemberExpression(callee)) return false;
+      if (!callee.computed) return false;
 
       prop = callee.property;
-      if (!t.isIdentifier(prop.object, { name: "Symbol" })) return;
-      if (!t.isIdentifier(prop.property, { name: "iterator" })) return;
+      if (!t.isIdentifier(prop.object, { name: "Symbol" })) return false;
+      if (!t.isIdentifier(prop.property, { name: "iterator" })) return false;
 
       return util.template("corejs-iterator", {
         CORE_ID: file.get("coreIdentifier"),
         VALUE:   callee.object
       });
+    } else if (t.isBinaryExpression(node)) {
+      // Symbol.iterator in arr -> core.$for.isIterable(arr)
+
+      if (node.operator !== "in") return;
+
+      var left = node.left;
+      if (!t.isMemberExpression(left)) return;
+      if (!t.isIdentifier(left.object, { name: "Symbol" })) return;
+      if (!t.isIdentifier(left.property, { name: "iterator" })) return;
+
+      return util.template("corejs-is-iterator", {
+        CORE_ID: file.get("coreIdentifier"),
+        VALUE:   node.right
+      });
     }
   }
 };
@@ -64,8 +78,8 @@ exports.manipulateOptions = function (opts) {
   if (opts.whitelist.length) opts.whitelist.push("es6.modules");
 };
 
-exports.post = function (file) {
-  file.scope.traverse(file.ast, astVisitor, file);
+exports.Program = function (node, parent, scope, file) {
+  scope.traverse(node, astVisitor, file);
 };
 
 exports.pre = function (file) {
@@ -83,7 +97,7 @@ exports.pre = function (file) {
 };
 
 exports.Identifier = function (node, parent, scope, file) {
-  if (node.name === "regeneratorRuntime" && t.isReferenced(node, parent)) {
+  if (t.isReferencedIdentifier(node, parent, { name: "regeneratorRuntime" })) {
     return file.get("regeneratorIdentifier");
   }
 };

lib/6to5/transformation/transformers/other/use-strict.js

@@ -3,8 +3,7 @@
 var useStrict = require("../../helpers/use-strict");
 var t         = require("../../../types");
 
-exports.post = function (file) {
-  var program = file.ast.program;
+exports.Program = function (program) {
   if (!useStrict.has(program)) {
     program.body.unshift(t.expressionStatement(t.literal("use strict")));
   }

lib/6to5/traversal/path.js

@@ -109,7 +109,7 @@ TraversalPath.prototype.call = function (key) {
   if (!node) return;
 
   var opts = this.opts;
-  var fn   = opts[key];
+  var fn   = opts[key] || opts;
   if (opts[node.type]) fn = opts[node.type][key] || fn;
 
   var replacement = fn.call(this, node, this.parent, this.scope, this.state);

lib/6to5/traversal/scope.js

@@ -418,7 +418,7 @@ var programReferenceVisitor = {
       state.addGlobal(node);
     } else if (t.isLabeledStatement(node)) {
       state.addGlobal(node);
-    } else if (t.isAssignmentExpression(node) || t.isUpdateExpression(node)) {
+    } else if (t.isAssignmentExpression(node) || t.isUpdateExpression(node) || (t.isUnaryExpression(node) && node.operator === "delete")) {
       scope.registerBindingReassignment(node);
     }
   }

lib/6to5/types/index.js

@@ -608,12 +608,12 @@ t.getBindingIdentifiers = function (node) {
 };
 
 t.getBindingIdentifiers.keys = {
+  UnaryExpression: ["argument"],
   AssignmentExpression: ["left"],
   ImportBatchSpecifier: ["name"],
   VariableDeclarator: ["id"],
   FunctionDeclaration: ["id"],
   ClassDeclaration: ["id"],
-  MemberExpression: ["object"],
   SpreadElement: ["argument"],
   RestElement: ["argument"],
   UpdateExpression: ["argument"],

lib/6to5/util.js

@@ -109,6 +109,8 @@ exports.template = function (name, nodes, keepExpression) {
     traverse(template, templateVisitor, null, nodes);
   }
 
+  if (template.body.length > 1) return template.body;
+
   var node = template.body[0];
 
   if (!keepExpression && t.isExpressionStatement(node)) {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "3.6.1",
+  "version": "3.6.3",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://6to5.org/",
   "repository": "6to5/6to5",
@@ -33,7 +33,7 @@
     "test": "make test"
   },
   "dependencies": {
-    "acorn-6to5": "0.11.1-30",
+    "acorn-6to5": "0.11.1-31",
     "ast-types": "~0.6.1",
     "chalk": "^0.5.1",
     "chokidar": "0.12.6",

packages/6to5-runtime/package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5-runtime",
   "description": "6to5 selfContained runtime",
-  "version": "3.6.0",
+  "version": "3.6.2",
   "repository": "6to5/6to5",
   "author": "Sebastian McKenzie <sebmck@gmail.com>"
 }

packages/build-runtime.js

@@ -2,6 +2,7 @@
 
 var buildHelpers = require("../lib/6to5/build-helpers");
 var transform    = require("../lib/6to5/transformation");
+var util         = require("../lib/6to5/util");
 var fs           = require("fs");
 var t            = require("../lib/6to5/types");
 var _            = require("lodash");
@@ -16,8 +17,14 @@ var writeFile = function (filename, content) {
   fs.writeFileSync(filename, content);
 };
 
-var readFile = function (filename) {
-  return fs.readFileSync(require.resolve(filename), "utf8");
+var readFile = function (filename, defaultify) {
+  var file = fs.readFileSync(require.resolve(filename), "utf8");
+
+  if (defaultify) {
+    file += '\nmodule.exports = { "default": module.exports, __esModule: true };\n';
+  }
+
+  return file;
 };
 
 var updatePackage = function () {
@@ -37,10 +44,10 @@ var selfContainify = function (code) {
 };
 
 var buildHelpers2 = function () {
-  var body = [];
+  var body = util.template("self-contained-helpers-head");
   var tree = t.program(body);
 
-  buildHelpers(body, t.identifier("exports"));
+  buildHelpers(body, t.identifier("helpers"));
 
   return transform.fromAst(tree, null, {
     optional: ["selfContained"]
@@ -48,7 +55,7 @@ var buildHelpers2 = function () {
 };
 
 writeFile("helpers.js", buildHelpers2());
-writeFile("core-js.js", readFile("core-js/library"));
-writeFile("regenerator/index.js", readFile("regenerator-6to5/runtime-module"));
+writeFile("core-js.js", readFile("core-js/library", true));
+writeFile("regenerator/index.js", readFile("regenerator-6to5/runtime-module", true));
 writeFile("regenerator/runtime.js", selfContainify(readFile("regenerator-6to5/runtime")));
 updatePackage();

test/fixtures/bin/6to5/dir --out-dir --source-maps-inline/out-files/lib/bar/bar.js

@@ -5,4 +5,4 @@ var _classCallCheck = function (instance, Constructor) { if (!(instance instance
 var Test = function Test() {
   _classCallCheck(this, Test);
 };
-//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInNyYy9iYXIvYmFyLmpzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiI7Ozs7SUFBTSxJQUFJLFlBQUosSUFBSTt3QkFBSixJQUFJIiwiZmlsZSI6InNyYy9iYXIvYmFyLmpzIiwic291cmNlc0NvbnRlbnQiOlsiY2xhc3MgVGVzdCB7XG5cbn0iXX0=
+//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIi4uLy4uL3NyYy9iYXIvYmFyLmpzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiI7Ozs7SUFBTSxJQUFJLFlBQUosSUFBSTt3QkFBSixJQUFJIiwiZmlsZSI6InNyYy9iYXIvYmFyLmpzIiwic291cmNlc0NvbnRlbnQiOlsiY2xhc3MgVGVzdCB7XG5cbn0iXX0=

test/fixtures/bin/6to5/dir --out-dir --source-maps-inline/out-files/lib/foo.js

@@ -3,4 +3,4 @@
 arr.map(function (x) {
   return x * MULTIPLIER;
 });
-//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInNyYy9mb28uanMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7QUFBQSxHQUFHLENBQUMsR0FBRyxDQUFDLFVBQUEsQ0FBQztTQUFJLENBQUMsR0FBRyxVQUFVO0NBQUEsQ0FBQyxDQUFDIiwiZmlsZSI6InNyYy9mb28uanMiLCJzb3VyY2VzQ29udGVudCI6WyJhcnIubWFwKHggPT4geCAqIE1VTFRJUExJRVIpOyJdfQ==
+//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIi4uL3NyYy9mb28uanMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7QUFBQSxHQUFHLENBQUMsR0FBRyxDQUFDLFVBQUEsQ0FBQztTQUFJLENBQUMsR0FBRyxVQUFVO0NBQUEsQ0FBQyxDQUFDIiwiZmlsZSI6InNyYy9mb28uanMiLCJzb3VyY2VzQ29udGVudCI6WyJhcnIubWFwKHggPT4geCAqIE1VTFRJUExJRVIpOyJdfQ==

test/fixtures/bin/6to5/dir --out-dir --source-maps/out-files/lib/bar/bar.js.map

@@ -1 +1 @@
-{"version":3,"sources":["src/bar/bar.js"],"names":[],"mappings":";;;;IAAM,IAAI,YAAJ,IAAI;wBAAJ,IAAI","file":"src/bar/bar.js","sourcesContent":["class Test {\n\n}"]}
+{"version":3,"sources":["../../src/bar/bar.js"],"names":[],"mappings":";;;;IAAM,IAAI,YAAJ,IAAI;wBAAJ,IAAI","file":"src/bar/bar.js","sourcesContent":["class Test {\n\n}"]}

test/fixtures/bin/6to5/dir --out-dir --source-maps/out-files/lib/foo.js.map

@@ -1 +1 @@
-{"version":3,"sources":["src/foo.js"],"names":[],"mappings":";;AAAA,GAAG,CAAC,GAAG,CAAC,UAAA,CAAC;SAAI,CAAC,GAAG,UAAU;CAAA,CAAC,CAAC","file":"src/foo.js","sourcesContent":["arr.map(x => x * MULTIPLIER);"]}
+{"version":3,"sources":["../src/foo.js"],"names":[],"mappings":";;AAAA,GAAG,CAAC,GAAG,CAAC,UAAA,CAAC;SAAI,CAAC,GAAG,UAAU;CAAA,CAAC,CAAC","file":"src/foo.js","sourcesContent":["arr.map(x => x * MULTIPLIER);"]}

test/fixtures/transformation/es6-destructuring/array/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 var _ref = ["hello", [", ", "junk"], ["world"]];
 

test/fixtures/transformation/es6-destructuring/assignment-expression/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
 var _temp, _temp2;
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 console.log((_temp = [123], _temp2 = _slicedToArray(_temp, 1), x = _temp2[0], _temp));

test/fixtures/transformation/es6-destructuring/assignment-statement/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 var _ref = f();
 

test/fixtures/transformation/es6-destructuring/empty/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 var _ref = ["foo", "hello", [", ", "junk"], ["world"]];
 

test/fixtures/transformation/es6-destructuring/for-in/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 for (var _ref in obj) {
   var _ref2 = _slicedToArray(_ref, 2);

test/fixtures/transformation/es6-destructuring/for-of/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 for (var _iterator = test.expectation.registers[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
   var _step$value = _slicedToArray(_step.value, 3);

test/fixtures/transformation/es6-destructuring/member-expression/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 var _ref = [1, 2];
 

test/fixtures/transformation/es6-destructuring/mixed/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 var _rect$topLeft = _slicedToArray(rect.topLeft, 2);
 

test/fixtures/transformation/es6-destructuring/parameters/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var _slicedToArray = function (arr, i) { if (!arr || !arr[Symbol.iterator]) { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } else if (Array.isArray(arr)) { return arr; } else { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } };
+var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { _arr.push(_step.value); if (i && _arr.length === i) break; } return _arr; } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } };
 
 function somethingAdvanced(_ref) {
   var _ref$topLeft = _ref.topLeft;

test/fixtures/transformation/self-contained/aliased-constructors/expected.js

@@ -1,7 +1,6 @@
 "use strict";
 
-var _core = require("6to5-runtime/core-js");
-
+var _core = require("6to5-runtime/core-js")["default"];
 obj.constructor === Object;
 obj.constructor === _core.Promise;
 

test/fixtures/transformation/self-contained/es6-for-of/expected.js

@@ -1,7 +1,6 @@
 "use strict";
 
-var _core = require("6to5-runtime/core-js");
-
+var _core = require("6to5-runtime/core-js")["default"];
 for (var _iterator = _core.$for.getIterator(arr), _step; !(_step = _iterator.next()).done;) {
   var i = _step.value;
 }

test/fixtures/transformation/self-contained/es7-array-comprehensions/expected.js

@@ -1,7 +1,6 @@
 "use strict";
 
-var _core = require("6to5-runtime/core-js");
-
+var _core = require("6to5-runtime/core-js")["default"];
 var arr = (function () {
   var _arr = [];
 

test/fixtures/transformation/self-contained/full/expected.js

@@ -1,11 +1,8 @@
 "use strict";
 
-var _regeneratorRuntime = require("6to5-runtime/regenerator");
-
-var _to5Helpers = require("6to5-runtime/helpers");
-
-var _core = require("6to5-runtime/core-js");
-
+var _core = require("6to5-runtime/core-js")["default"];
+var _regeneratorRuntime = require("6to5-runtime/regenerator")["default"];
+var _to5Helpers = require("6to5-runtime/helpers")["default"];
 var giveWord = _regeneratorRuntime.mark(function giveWord() {
   return _regeneratorRuntime.wrap(function giveWord$(context$1$0) {
     while (1) switch (context$1$0.prev = context$1$0.next) {

test/fixtures/transformation/self-contained/modules-amd/expected.js

@@ -1,6 +1,6 @@
 define(["exports", "foo", "6to5-runtime/helpers"], function (exports, _foo, _to5RuntimeHelpers) {
   "use strict";
 
-  var _to5Helpers = _to5RuntimeHelpers;
+  var _to5Helpers = _to5RuntimeHelpers["default"];
   var foo = _to5Helpers.interopRequire(_foo);
-});
+});

test/fixtures/transformation/self-contained/modules-common/expected.js

@@ -1,5 +1,4 @@
 "use strict";
 
-var _to5Helpers = require("6to5-runtime/helpers");
-
-var foo = _to5Helpers.interopRequire(require("foo"));
+var _to5Helpers = require("6to5-runtime/helpers")["default"];
+var foo = _to5Helpers.interopRequire(require("foo"));

test/fixtures/transformation/self-contained/modules-system/expected.js

@@ -4,10 +4,10 @@ System.register(["6to5-runtime/helpers"], function (_export) {
   var _to5Helpers;
   return {
     setters: [function (_to5RuntimeHelpers) {
-      _to5Helpers = _to5RuntimeHelpers;
+      _to5Helpers = _to5RuntimeHelpers["default"];
     }],
     execute: function () {
       foo.apply(undefined, _to5Helpers.toConsumableArray(bar));
     }
   };
-});
+});

test/fixtures/transformation/self-contained/modules-umd/expected.js

@@ -7,6 +7,6 @@
 })(function (exports, _foo, _to5RuntimeHelpers) {
   "use strict";
 
-  var _to5Helpers = _to5RuntimeHelpers;
+  var _to5Helpers = _to5RuntimeHelpers["default"];
   var foo = _to5Helpers.interopRequire(_foo);
-});
+});

test/fixtures/transformation/self-contained/regenerator-runtime/expected.js

@@ -1,7 +1,6 @@
 "use strict";
 
-var _regeneratorRuntime = require("6to5-runtime/regenerator");
-
+var _regeneratorRuntime = require("6to5-runtime/regenerator")["default"];
 void _regeneratorRuntime.mark(function callee$0$0() {
   return _regeneratorRuntime.wrap(function callee$0$0$(context$1$0) {
     while (1) switch (context$1$0.prev = context$1$0.next) {

test/fixtures/transformation/self-contained/symbol-iterator-in/actual.js

@@ -0,0 +1 @@
+Symbol.iterator in Object(arr);

test/fixtures/transformation/self-contained/symbol-iterator-in/expected.js

@@ -0,0 +1,4 @@
+"use strict";
+
+var _core = require("6to5-runtime/core-js")["default"];
+_core.$for.isIterable(Object(arr));