v3.3.1

Support use of super inside instance setter.

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "vendor/test262"]
 	path = vendor/test262
 	url = https://github.com/tc39/test262
+[submodule "vendor/compat-table"]
+	path = vendor/compat-table
+	url = https://github.com/kangax/compat-table

.istanbul.yml

@@ -0,0 +1,2 @@
+instrumentation:
+  root: lib

CHANGELOG.md

@@ -11,10 +11,45 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 3.3.1
+
+ * **Bug Fix**
+  * Block hoist assignment pattern destructuring.
+
+## 3.3.0
+
+ * **Bug Fix**
+  * Do all transforms before the regenerator transform is ran.
+ * **New Feature**
+  * Added back the 2.x optional runtime.
+
+## 3.2.1
+
+ * **Bug Fix**
+  * Fix block scoping transformer rewriting breaks and continues to inner labels.
+
+## 3.2.0
+
+ * **Bug Fix**
+  * Fixed scope tracking for default parameters IIFE.
+  * Fixed block scoped functions.
+  * Improved `bin/6to5` path resolution.
+ * **New Feature**
+  * You can now trigger super setters in classes. Thanks [@kruppel](https://github.com/kruppel)!
+  * Add `resolveSourceMap` option.
+  * Better support and output for block scoping loops with labels.
+
+## 3.1.1
+
+ * **Polish**
+  * Drop `enumerable: false` clause from class method definitions as `enumerable` already defaults to `false`.
+ * **Bug Fix**
+  * Properly transform `XJSIdentifier` nodes referencing `this` into a `ThisExpression`.
+
 ## 3.1.0
 
  * **Breaking Change**
-  * [Make class methods unenumerable](/Users/sebastian/Projects/6to5/6to5/test/fixtures/esnext/es6-classes/getter-setter.js).
+  * [Make class methods unenumerable](https://esdiscuss.org/topic/classes-and-enumerability#content-61).
 
 ## 3.0.16
 

Makefile

@@ -21,6 +21,9 @@ build:
 	node $(BROWSERIFY_CMD) lib/6to5/browser.js -s to5 >dist/6to5.js
 	node $(UGLIFY_CMD) dist/6to5.js >dist/6to5.min.js
 
+	node bin/6to5-runtime >dist/runtime.js
+	node $(UGLIFY_CMD) dist/runtime.js >dist/runtime.min.js
+
 	rm -rf templates.json
 
 clean:
@@ -77,6 +80,7 @@ publish:
 	make build
 	cp dist/6to5.min.js browser.js
 	cp dist/polyfill.min.js browser-polyfill.js
+	cp dist/runtime.min.js runtime.js
 
 	node tools/cache-templates
 	test -f templates.json
@@ -110,3 +114,4 @@ bootstrap:
 	npm install
 	git submodule update --init
 	cd vendor/regenerator; npm install
+	cd vendor/compat-table; npm install object-assign

bin/6to5-runtime

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+
+var runtime = require("../lib/6to5/build-runtime");
+console.log(runtime());

bin/6to5/dir.js

@@ -53,10 +53,7 @@ module.exports = function (commander, filenames, opts) {
 
       _.each(["add", "change"], function (type) {
         watcher.on(type, function (filename) {
-          // chop off the dirname plus the path separator
-          var relative = filename.slice(dirname.length + 1);
-
-          console.log(type, filename);
+          var relative = path.relative(dirname, filename) || filename;
           write(filename, relative);
         });
       });

bin/6to5/index.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 var commander = require("commander");
-var transform = require("../../lib/6to5/transformation/transform");
+var transform = require("../../lib/6to5/transformation");
 var util      = require("../../lib/6to5/util");
 var fs        = require("fs");
 var each      = require("lodash/collection/each");
@@ -11,6 +11,7 @@ commander.option("-t, --source-maps-inline", "Append sourceMappingURL comment to
 commander.option("-s, --source-maps", "Save source map alongside the compiled code");
 commander.option("-f, --filename [filename]", "Filename to use when reading from stdin - this will be used in source-maps, errors etc [stdin]", "stdin");
 commander.option("-w, --watch", "Recompile files on changes");
+commander.option("-r, --runtime", "Replace 6to5 declarations with references to a runtime");
 commander.option("-e, --experimental", "Enable experimental support for proposed ES7 features");
 commander.option("-p, --playground", "Enable playground support");
 
@@ -108,6 +109,7 @@ exports.opts = {
   sourceMap:              commander.sourceMaps || commander.sourceMapsInline,
   optional:               commander.optional,
   comments:               !commander.removeComments,
+  runtime:                commander.runtime,
   modules:                commander.modules,
   loose:                  commander.loose
 };

lib/6to5/browser.js

@@ -1,6 +1,6 @@
 "use strict";
 
-var transform = module.exports = require("./transformation/transform");
+var transform = module.exports = require("./transformation");
 
 transform.version = require("../../package").version;
 

lib/6to5/build-helpers.js

@@ -0,0 +1,13 @@
+var File = require("./file");
+var util = require("./util");
+var each = require("lodash/collection/each");
+var t    = require("./types");
+
+module.exports = function (body, namespace) {
+  each(File.helpers, function (name) {
+    var key = t.identifier(t.toIdentifier(name));
+    body.push(t.expressionStatement(
+      t.assignmentExpression("=", t.memberExpression(namespace, key), util.template(name))
+    ));
+  });
+};

lib/6to5/build-runtime.js

@@ -0,0 +1,25 @@
+"use strict";
+
+var buildHelpers = require("./build-helpers");
+var generator    = require("./generation");
+var util         = require("./util");
+var t            = require("./types");
+
+module.exports = function () {
+  var namespace = t.identifier("to5Runtime");
+
+  var body      = [];
+  var container = t.functionExpression(null, [t.identifier("global")], t.blockStatement(body));
+  var tree      = t.program([t.expressionStatement(t.callExpression(container, [util.template("self-global")]))]);
+
+  body.push(t.variableDeclaration("var", [
+    t.variableDeclarator(
+      namespace,
+      t.assignmentExpression("=", t.memberExpression(t.identifier("global"), namespace), t.objectExpression([]))
+    )
+  ]));
+
+  buildHelpers(body, namespace);
+
+  return generator(tree).code;
+};

lib/6to5/detection/index.js

@@ -1,7 +1,29 @@
-//exports.canRun = function (ast, userAgent) {
+module.exports = detect;
 
-//};
+var SYNTAX_KEYS = require("./syntax-keys");
+var traverse    = require("../traverse");
+var visitors    = traverse.explode(require("./visitors"));
 
-//exports.whoCanRun = function (ast, userAgent) {
+function detect(ast) {
+  var stats = {
+    syntax: {},
+    builtins: {}
+  };
 
-//};
+  var detectedSyntax = function (name) {
+    stats.syntax[name] = true;
+  };
+
+  traverse(ast, {
+    enter: function (node, parent) {
+      if (SYNTAX_KEYS[node.type]) {
+        detectedSyntax(SYNTAX_KEYS[node.type]);
+      }
+
+      var visitor = visitors[node.type];
+      if (visitor) visitor(node, parent, detectedSyntax);
+    }
+  });
+
+  return stats;
+}

lib/6to5/detection/syntax-keys.json

@@ -0,0 +1,84 @@
+{
+  "ArrowFunctionExpression":   "es6.arrowFunctions",
+
+  "AwaitExpression":           "es7.asyncFunctions",
+
+  "ClassBody":                 "es6.classes",
+  "ClassDeclaration":          "es6.classes",
+  "ClassExpression":           "es6.classes",
+  "MethodDefinition":          "es6.classes",
+
+  "ComprehensionBlock":        "es7.comprehensions",
+  "ComprehensionExpression":   "es7.comprehensions",
+
+  "ForOfStatement":            "es6.forOf",
+
+  "ExportBatchSpecifier":      "es6.modules",
+  "ExportDeclaration":         "es6.modules",
+  "ExportSpecifier":           "es6.modules",
+  "ImportBatchSpecifier":      "es6.modules",
+  "ImportDeclaration":         "es6.modules",
+  "ImportSpecifier":           "es6.modules",
+
+  "ArrayPattern":              "es6.destructuring",
+  "AssignmentPattern":         "es6.destructuring",
+  "ObjectPattern":             "es6.destructuring",
+
+  "RestElement":               "es6.parameters.rest",
+
+  "SpreadElement":             "es6.spread",
+
+  "SpreadProperty":            "es7.objectSpread",
+
+  "TaggedTemplateExpression":  "es6.templateLiterals",
+  "TemplateElement":           "es6.templateLiterals",
+  "TemplateLiteral":           "es6.templateLiterals",
+
+  "VirtualPropertyExpression": "es7.abstractReferences",
+  "PrivateDeclaration":        "es7.abstractReferences",
+
+  "YieldExpression":           "es6.generators",
+
+  "AnyTypeAnnotation":           "flow",
+  "ArrayTypeAnnotation":         "flow",
+  "BooleanTypeAnnotation":       "flow",
+  "ClassProperty":               "flow",
+  "DeclareClass":                "flow",
+  "DeclareFunction":             "flow",
+  "DeclareModule":               "flow",
+  "DeclareVariable":             "flow",
+  "FunctionTypeAnnotation":      "flow",
+  "FunctionTypeParam":           "flow",
+  "GenericTypeAnnotation":       "flow",
+  "InterfaceExtends":            "flow",
+  "InterfaceDeclaration":        "flow",
+  "IntersectionTypeAnnotation":  "flow",
+  "NullableTypeAnnotation":      "flow",
+  "NumberTypeAnnotation":        "flow",
+  "StringLiteralTypeAnnotation": "flow",
+  "StringTypeAnnotation":        "flow",
+  "TupleTypeAnnotation":         "flow",
+  "TypeofTypeAnnotation":        "flow",
+  "TypeAlias":                   "flow",
+  "TypeAnnotation":              "flow",
+  "TypeParameterDeclaration":    "flow",
+  "TypeParameterInstantiation":  "flow",
+  "ObjectTypeAnnotation":        "flow",
+  "ObjectTypeCallProperty":      "flow",
+  "ObjectTypeIndexer":           "flow",
+  "ObjectTypeProperty":          "flow",
+  "QualifiedTypeIdentifier":     "flow",
+  "UnionTypeAnnotation":         "flow",
+  "VoidTypeAnnotation":          "flow",
+
+  "JSXAttribute":              "jsx",
+  "JSXClosingElement":         "jsx",
+  "JSXElement":                "jsx",
+  "JSXEmptyExpression":        "jsx",
+  "JSXExpressionContainer":    "jsx",
+  "JSXIdentifier":             "jsx",
+  "JSXMemberExpression":       "jsx",
+  "JSXNamespacedName":         "jsx",
+  "JSXOpeningElement":         "jsx",
+  "JSXSpreadAttribute":        "jsx"
+}

lib/6to5/detection/visitors.js

@@ -0,0 +1,54 @@
+var t = require("../types");
+var _ = require("lodash");
+
+exports.AssignmentExpression = function (node, parent, detected) {
+  if (node.operator === "**=") {
+    detected("es6.exponentation");
+  }
+};
+
+exports.BinaryExpression = function (node, parent, detected) {
+  if (node.operator === "**") {
+    detected("es6.exponentation");
+  }
+};
+
+exports.VariableDeclaration = function (node, parent, detected) {
+  if (node.kind === "let" || node.kind === "const") {
+    detected("es6.blockScoping");
+  }
+
+  if (node.kind === "const") {
+    detected("es6.constants");
+  }
+};
+
+exports.Property = function (node, parent, detected) {
+  if (node.shorthand || node.method) {
+    detected("es6.properties.shorthand");
+  }
+
+  if (node.kind === "set" || node.kind === "get") {
+    detected("es5.properties.mutators");
+  }
+
+  if (node.computed) {
+    detected("es6.properties.computed");
+  }
+};
+
+exports.AssignmentPattern = function (node, parent, detected) {
+  if (t.isFunction(parent) && _.contains(parent.params, node)) {
+    detected("es6.parameters.default");
+  }
+};
+
+exports.Function = function (node, parent, detected) {
+  if (node.generator) {
+    detected("es6.generators");
+  }
+
+  if (node.async) {
+    detected("es7.asyncFunctions");
+  }
+};

lib/6to5/file.js

@@ -4,8 +4,8 @@ module.exports = File;
 
 var SHEBANG_REGEX = /^\#\!.*/;
 
-var transform  = require("./transformation/transform");
-var generate   = require("./generation/generator");
+var transform  = require("./transformation");
+var generate   = require("./generation");
 var clone      = require("./helpers/clone");
 var Scope      = require("./traverse/scope");
 var util       = require("./util");
@@ -24,7 +24,7 @@ function File(opts) {
   this.data             = {};
 
   this.lastStatements   = [];
-  this.opts             = File.normaliseOptions(opts);
+  this.opts             = this.normaliseOptions(opts);
   this.ast              = {};
 
   this.buildTransformers();
@@ -49,7 +49,8 @@ File.helpers = [
   "interop-require-wildcard",
   "typeof",
   "extends",
-  "get"
+  "get",
+  "set"
 ];
 
 File.validOptions = [
@@ -74,14 +75,17 @@ File.validOptions = [
   "format",
   "playground",
   "experimental",
+  "resolveModuleSource",
+  "runtime",
 
   // these are used by plugins
   "ignore",
   "only",
-  "extensions"
+  "extensions",
+  "accept"
 ];
 
-File.normaliseOptions = function (opts) {
+File.prototype.normaliseOptions = function (opts) {
   opts = clone(opts);
 
   for (var key in opts) {
@@ -92,6 +96,7 @@ File.normaliseOptions = function (opts) {
 
   defaults(opts, {
     keepModuleIdExtensions: false,
+    resolveModuleSource:    null,
     experimental:           false,
     reactCompat:            false,
     playground:             false,
@@ -104,6 +109,7 @@ File.normaliseOptions = function (opts) {
     comments:               true,
     filename:               "unknown",
     modules:                "common",
+    runtime:                false,
     loose:                  [],
     code:                   true,
     ast:                    true
@@ -142,6 +148,10 @@ File.normaliseOptions = function (opts) {
     opts.experimental = true;
   }
 
+  if (opts.runtime) {
+    this.set("runtimeIdentifier", t.identifier("to5Runtime"));
+  }
+
   opts.blacklist = transform._ensureTransformerNames("blacklist", opts.blacklist);
   opts.whitelist = transform._ensureTransformerNames("whitelist", opts.whitelist);
   opts.optional = transform._ensureTransformerNames("optional", opts.optional);
@@ -332,7 +342,11 @@ File.prototype.transform = function (ast) {
   this.ast = ast;
   this.lastStatements = t.getLastStatements(ast.program);
   this.scope = new Scope(ast.program, ast, null, this);
-  this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
+
+  var modFormatter = this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
+  if (modFormatter.init && this.transformers["es6.modules"].canRun()) {
+    modFormatter.init();
+  }
 
   var astRun = function (key) {
     each(self.transformerStack, function (pass) {

lib/6to5/generation/index.js

@@ -40,9 +40,11 @@ each(Buffer.prototype, function (fn, key) {
 });
 
 CodeGenerator.normaliseOptions = function (code, opts) {
-  var indent = detectIndent(code);
-  var style  = indent.indent;
-  if (!style || style === " ") style = "  ";
+  var style = "  ";
+  if (code) {
+    var indent = detectIndent(code).indent;
+    if (indent && indent !== " ") style = indent;
+  }
 
   return merge({
     parentheses: true,

lib/6to5/helpers/levenshtein.js

@@ -0,0 +1,38 @@
+// taken from stackoverflow, it's crap i know.
+
+module.exports = function (a, b) {
+  if (a.length === 0) return b.length;
+  if (b.length === 0) return a.length;
+
+  var matrix = [];
+
+  // increment along the first column of each row
+  var i;
+  for (i = 0; i <= b.length; i++) {
+    matrix[i] = [i];
+  }
+
+  // increment each column in the first row
+  var j;
+  for (j = 0; j <= a.length; j++) {
+    matrix[0][j] = j;
+  }
+
+  // Fill in the rest of the matrix
+  for (i = 1; i <= b.length; i++) {
+    for (j = 1; j <= a.length; j++) {
+      if (b.charAt(i - 1) == a.charAt(j - 1)) {
+        matrix[i][j] = matrix[i - 1][j - 1];
+      } else {
+        matrix[i][j] = Math.min(
+          matrix[i - 1][j - 1] + 1, // substitution
+          Math.min(
+            matrix[i][j - 1] + 1, // insertion
+            matrix[i - 1][j] + 1) // deletion
+          );
+      }
+    }
+  }
+
+  return matrix[b.length][a.length];
+};

lib/6to5/index.js

@@ -1,12 +1,14 @@
 "use strict";
 
-var transform  = require("./transformation/transform");
+var transform  = require("./transformation");
 var util       = require("./util");
 var fs         = require("fs");
 var isFunction = require("lodash/lang/isFunction");
 
 exports.version = require("../../package").version;
 
+exports.runtime = require("./build-runtime");
+
 exports.types = require("./types");
 
 exports.register = function (opts) {

lib/6to5/transformation/helpers/replace-supers.js

@@ -21,6 +21,36 @@ function ReplaceSupers(opts) {
   this.file                  = opts.file;
 }
 
+/**
+ * Sets a super class value of the named property.
+ *
+ * @example
+ *
+ *   _set(Object.getPrototypeOf(CLASS.prototype), "METHOD", "VALUE", this)
+ *
+ * @param {Node} property
+ * @param {boolean} isStatic
+ * @param {boolean} isComputed
+ *
+ * @returns {Node}
+ */
+ReplaceSupers.prototype.setSuperProperty = function (property, value, isStatic, isComputed, thisExpression) {
+  return t.callExpression(
+    this.file.addHelper("set"),
+    [
+      t.callExpression(
+        t.memberExpression(t.identifier("Object"), t.identifier("getPrototypeOf")),
+        [
+          isStatic ? this.className : t.memberExpression(this.className, t.identifier("prototype"))
+        ]
+      ),
+      isComputed ? property : t.literal(property.name),
+      value,
+      thisExpression
+    ]
+  );
+};
+
 /**
  * Gets a node representing the super class value of the named property.
  *
@@ -191,6 +221,7 @@ ReplaceSupers.prototype.specHandle = function (getThisReference, node, parent) {
   var property;
   var computed;
   var args;
+  var thisReference;
 
   if (t.isIdentifier(node, { name: "super" })) {
     if (!(t.isMemberExpression(parent) && !parent.computed && parent.property === node)) {
@@ -226,11 +257,18 @@ ReplaceSupers.prototype.specHandle = function (getThisReference, node, parent) {
     // super.name; -> _get(Object.getPrototypeOf(ClassName.prototype), "name", this);
     property = node.property;
     computed = node.computed;
+  } else if (t.isAssignmentExpression(node)) {
+    if (!t.isIdentifier(node.left.object, { name: "super" })) return;
+    if (methodNode.kind !== "set") return;
+
+    thisReference = getThisReference();
+    // super.name = "val"; -> _set(Object.getPrototypeOf(ClassName.prototype), "name", this);
+    return this.setSuperProperty(node.left.property, node.right, methodNode.static, node.left.computed, thisReference);
   }
 
   if (!property) return;
 
-  var thisReference = getThisReference();
+  thisReference = getThisReference();
   var superProperty = this.superProperty(property, methodNode.static, computed, thisReference);
   if (args) {
     if (args.length === 1 && t.isSpreadElement(args[0])) {

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

@@ -45,7 +45,7 @@ var exportsVisitor = {
       formatter.hasLocalImports = true;
 
       if (declar && t.isStatement(declar)) {
-        extend(formatter.localExports, t.getIds(declar, true));
+        extend(formatter.localExports, t.getDeclarations(declar));
       }
 
       if (!node.default) {
@@ -67,7 +67,7 @@ var importsVisitor = {
   enter: function (node, parent, scope, context, formatter) {
     if (t.isImportDeclaration(node)) {
       formatter.hasLocalImports = true;
-      extend(formatter.localImports, t.getIds(node, true));
+      extend(formatter.localImports, t.getDeclarations(node));
       formatter.bumpImportOccurences(node);
     }
   }

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

@@ -15,6 +15,8 @@ function AMDFormatter() {
 
 util.inherits(AMDFormatter, DefaultFormatter);
 
+AMDFormatter.prototype.init = CommonFormatter.prototype.init;
+
 AMDFormatter.prototype.buildDependencyLiterals = function () {
   var names = [];
   for (var name in this.ids) {

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

@@ -3,20 +3,22 @@
 module.exports = CommonJSFormatter;
 
 var DefaultFormatter = require("./_default");
+var contains         = require("lodash/collection/contains");
 var util             = require("../../util");
 var t                = require("../../types");
-var contains         = require("lodash/collection/contains");
 
-function CommonJSFormatter(file) {
+function CommonJSFormatter() {
   DefaultFormatter.apply(this, arguments);
-
-  if (this.hasNonDefaultExports) {
-    file.ast.program.body.push(util.template("exports-module-declaration", true));
-  }
 }
 
 util.inherits(CommonJSFormatter, DefaultFormatter);
 
+CommonJSFormatter.prototype.init = function () {
+  if (this.hasNonDefaultExports) {
+    this.file.ast.program.body.push(util.template("exports-module-declaration", true));
+  }
+};
+
 CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
   var variableName = t.getSpecifierName(specifier);
 

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

@@ -21,6 +21,8 @@ function SystemFormatter(file) {
 
 util.inherits(SystemFormatter, AMDFormatter);
 
+SystemFormatter.prototype.init = function () {};
+
 SystemFormatter.prototype._addImportSource = function (node, exportNode) {
   node._importSource = exportNode.source && exportNode.source.value;
   return node;

lib/6to5/transformation/templates/set.js

@@ -0,0 +1,24 @@
+(function set(object, property, value, receiver) {
+  var desc = Object.getOwnPropertyDescriptor(object, property);
+
+  if (desc === undefined) {
+    var parent = Object.getPrototypeOf(object);
+
+    if (parent === null) {
+      return;
+    } else {
+      return set(parent, property, value, receiver);
+    }
+  } else if ("value" in desc && desc.writable) {
+    desc.value = value;
+    return;
+  } else {
+    var setter = desc.set;
+
+    if (setter === undefined) {
+      return;
+    }
+
+    return setter.call(receiver, value);
+  }
+});

lib/6to5/transformation/transformer-pass.js

@@ -41,6 +41,8 @@ TransformerPass.prototype.canRun = function () {
 
   if (transformer.experimental && !opts.experimental) return false;
 
+  if (transformer.playground && !opts.playground) return false;
+
   return true;
 };
 

lib/6to5/transformation/transformer.js

@@ -3,8 +3,8 @@
 module.exports = Transformer;
 
 var TransformerPass = require("./transformer-pass");
-var t               = require("../types");
 var isFunction      = require("lodash/lang/isFunction");
+var traverse        = require("../traverse");
 var isObject        = require("lodash/lang/isObject");
 var each            = require("lodash/collection/each");
 
@@ -17,6 +17,7 @@ var each            = require("lodash/collection/each");
 function Transformer(key, transformer, opts) {
   this.manipulateOptions = transformer.manipulateOptions;
   this.experimental      = !!transformer.experimental;
+  this.playground        = !!transformer.playground;
   this.secondPass        = !!transformer.secondPass;
   this.optional          = !!transformer.optional;
   this.handlers          = this.normalise(transformer);
@@ -31,6 +32,8 @@ Transformer.prototype.normalise = function (transformer) {
     transformer = { ast: transformer };
   }
 
+  traverse.explode(transformer);
+
   each(transformer, function (fns, type) {
     // hidden property
     if (type[0] === "_") {
@@ -46,13 +49,6 @@ Transformer.prototype.normalise = function (transformer) {
     if (!fns.exit) fns.exit = function () { };
 
     transformer[type] = fns;
-
-    var aliases = t.FLIPPED_ALIAS_KEYS[type];
-    if (aliases) {
-      each(aliases, function (alias) {
-        transformer[alias] = fns;
-      });
-    }
   });
 
   return transformer;

lib/6to5/transformation/transformers/es6/block-scoping.js

@@ -45,19 +45,8 @@ exports.Loop = function (node, parent, scope, context, file) {
     t.ensureBlock(node);
     node.body._letDeclarators = [init];
   }
-
-  if (t.isLabeledStatement(parent)) {
-    // set label so `run` has access to it
-    node.label = parent.label;
-  }
-
   var letScoping = new LetScoping(node, node.body, parent, scope, file);
   letScoping.run();
-
-  if (node.label && !t.isLabeledStatement(parent)) {
-    // we've been given a label so let's wrap ourselves
-    return t.labeledStatement(node.label, node);
-  }
 };
 
 exports.Program =
@@ -269,7 +258,7 @@ LetScoping.prototype.getLetReferences = function () {
   //
   for (var i = 0; i < declarators.length; i++) {
     declar = declarators[i];
-    extend(this.outsideLetReferences, t.getIds(declar, true));
+    extend(this.outsideLetReferences, t.getDeclarations(declar));
   }
 
   //
@@ -285,7 +274,7 @@ LetScoping.prototype.getLetReferences = function () {
   //
   for (i = 0; i < declarators.length; i++) {
     declar = declarators[i];
-    var keys = t.getIds(declar, true);
+    var keys = t.getDeclarations(declar);
     extend(this.letReferences, keys);
     this.hasLetReferences = true;
   }
@@ -308,34 +297,71 @@ LetScoping.prototype.getLetReferences = function () {
   return state.closurify;
 };
 
+var loopNodeTo = function (node) {
+  if (t.isBreakStatement(node)) {
+    return "break";
+  } else if (t.isContinueStatement(node)) {
+    return "continue";
+  }
+};
+
 var loopVisitor = {
   enter: function (node, parent, scope, context, state) {
     var replace;
 
+    if (t.isLoop(node)) {
+      state.ignoreLabeless = true;
+      traverse(node, loopVisitor, scope, state);
+      state.ignoreLabeless = false;
+    }
+
     if (t.isFunction(node) || t.isLoop(node)) {
       return context.skip();
     }
 
-    if (node && !node.label && state.isLoop) {
-      if (t.isBreakStatement(node)) {
-        if (t.isSwitchCase(parent)) return;
+    var loopText = loopNodeTo(node);
 
-        state.hasBreak = true;
-        replace = t.returnStatement(t.literal("break"));
-      } else if (t.isContinueStatement(node)) {
-        state.hasContinue = true;
-        replace = t.returnStatement(t.literal("continue"));
+    if (loopText) {
+      if (node.label) {
+        // we shouldn't be transforming this because it exists somewhere inside
+        if (state.innerLabels.indexOf(node.label.name) >= 0) {
+          return;
+        }
+
+        loopText = loopText + "|" + node.label.name;
+      } else {
+        // we shouldn't be transforming these statements because
+        // they don't refer to the actual loop we're scopifying
+        if (state.ignoreLabeless) return;
+
+        // break statements mean something different in this context
+        if (t.isBreakStatement(node) && t.isSwitchCase(parent)) return;
       }
+
+      state.hasBreakContinue = true;
+      state.map[loopText] = node;
+      replace = t.literal(loopText);
     }
 
     if (t.isReturnStatement(node)) {
       state.hasReturn = true;
-      replace = t.returnStatement(t.objectExpression([
+      replace = t.objectExpression([
         t.property("init", t.identifier("v"), node.argument || t.identifier("undefined"))
-      ]));
+      ]);
     }
 
-    if (replace) return t.inherits(replace, node);
+    if (replace) {
+      replace = t.returnStatement(replace);
+      return t.inherits(replace, node);
+    }
+  }
+};
+
+var loopLabelVisitor = {
+  enter: function (node, parent, scope, context, state) {
+    if (t.isLabeledStatement(node)) {
+      state.innerLabels.push(node.label.name);
+    }
   }
 };
 
@@ -350,13 +376,17 @@ var loopVisitor = {
 
 LetScoping.prototype.checkLoop = function () {
   var state = {
-    hasContinue: false,
-    hasReturn:   false,
-    hasBreak:    false,
-    isLoop:      !!this.loopParent
+    hasBreakContinue: false,
+    ignoreLabeless:   false,
+    innerLabels:      [],
+    hasReturn:        false,
+    isLoop:           !!this.loopParent,
+    map:              {}
   };
 
+  traverse(this.block, loopLabelVisitor, this.scope, state);
   traverse(this.block, loopVisitor, this.scope, state);
+
   return state;
 };
 
@@ -422,7 +452,7 @@ LetScoping.prototype.pushDeclar = function (node) {
 
 LetScoping.prototype.build = function (ret, call) {
   var has = this.has;
-  if (has.hasReturn || has.hasBreak || has.hasContinue) {
+  if (has.hasReturn || has.hasBreakContinue) {
     this.buildHas(ret, call);
   } else {
     this.body.push(t.expressionStatement(call));
@@ -455,22 +485,14 @@ LetScoping.prototype.buildHas = function (ret, call) {
     });
   }
 
-  if (has.hasBreak || has.hasContinue) {
+  if (has.hasBreakContinue) {
     if (!loopParent) {
       throw new Error("Has no loop parent but we're trying to reassign breaks " +
                       "and continues, something is going wrong here.");
     }
 
-    // ensure that the parent has a label as we're building a switch and we
-    // need to be able to access it
-    var label = loopParent.label = loopParent.label || this.scope.generateUidIdentifier("loop");
-
-    if (has.hasBreak) {
-      cases.push(t.switchCase(t.literal("break"), [t.breakStatement(label)]));
-    }
-
-    if (has.hasContinue) {
-      cases.push(t.switchCase(t.literal("continue"), [t.continueStatement(label)]));
+    for (var key in has.map) {
+      cases.push(t.switchCase(t.literal(key), [has.map[key]]));
     }
 
     if (has.hasReturn) {

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

@@ -231,7 +231,7 @@ Class.prototype.pushMethod = function (node) {
   }
 
   util.pushMutatorMap(mutatorMap, methodName, kind, node.computed, node);
-  util.pushMutatorMap(mutatorMap, methodName, "enumerable", node.computed, t.literal(false));
+  util.pushMutatorMap(mutatorMap, methodName, "enumerable", node.computed, false);
 };
 
 /**

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

@@ -6,7 +6,7 @@ var t        = require("../../../types");
 var visitor = {
   enter: function (node, parent, scope, context, state) {
     if (t.isDeclaration(node) || t.isAssignmentExpression(node)) {
-      var ids = t.getIds(node, true);
+      var ids = t.getDeclarations(node);
 
       for (var key in ids) {
         var id = ids[key];
@@ -31,7 +31,7 @@ var visitor = {
 
 exports.Scope = function (node, parent, scope, context, file) {
   traverse(node, visitor, scope, {
-    constants: scope.getAllOfKind("const"),
+    constants: scope.getAllDeclarationsOfKind("const"),
     file:      file
   });
 };

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

@@ -46,9 +46,11 @@ var push = function (opts, nodes, elem, parentId) {
 var pushAssignmentPattern = function (opts, nodes, pattern, parentId) {
   var tempParentId = opts.scope.generateUidBasedOnNode(parentId, opts.file);
 
-  nodes.push(t.variableDeclaration("var", [
+  var declar = t.variableDeclaration("var", [
     t.variableDeclarator(tempParentId, parentId)
-  ]));
+  ]);
+  declar._blockHoist = opts.blockHoist;
+  nodes.push(declar);
 
   nodes.push(buildVariableAssign(
     opts,

lib/6to5/transformation/transformers/es6/parameters.default.js

@@ -13,7 +13,7 @@ var hasDefaults = function (node) {
 
 var iifeVisitor = {
   enter: function (node, parent, scope, context, state) {
-    if (t.isReferencedIdentifier(node, parent) && scope.hasOwn(node.name)) {
+    if (t.isReferencedIdentifier(node, parent) && state.scope.hasOwn(node.name)) {
       state.iife = true;
       context.stop();
     }

lib/6to5/transformation/transformers/es6/parameters.rest.js

@@ -58,15 +58,15 @@ exports.Function = function (node, parent, scope) {
     node.body.body.unshift(restDeclar);
   }
 
-  node.body.body.unshift(
-    util.template("rest", {
-      ARGUMENTS: argsId,
-      ARRAY_KEY: arrKey,
-      ARRAY_LEN: arrLen,
-      START: start,
-      ARRAY: rest,
-      KEY: key,
-      LEN: len,
-    })
-  );
+  var loop = util.template("rest", {
+    ARGUMENTS: argsId,
+    ARRAY_KEY: arrKey,
+    ARRAY_LEN: arrLen,
+    START: start,
+    ARRAY: rest,
+    KEY: key,
+    LEN: len,
+  });
+  loop._blockHoist = node.params.length + 1;
+  node.body.body.unshift(loop);
 };

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

@@ -13,7 +13,7 @@ module.exports = {
 
   react:                                   require("./other/react"),
 
-  _modulesSplit:                           require("./internal/modules-split"),
+  _modules:                                require("./internal/modules"),
 
   // needs to be before `regenerator` due to generator comprehensions
   // needs to be before `_aliasFunction`
@@ -52,14 +52,13 @@ module.exports = {
   // needs to be after `es6.blockScoping` due to needing `letReferences` set on blocks
   "es6.blockScopingTDZ":                   require("./es6/block-scoping-tdz"),
 
-  // needs to be after block scoping since regenerator doesn't support it
-  regenerator:                             require("./other/regenerator"),
-
   "es6.parameters.default":                require("./es6/parameters.default"),
   "es6.parameters.rest":                   require("./es6/parameters.rest"),
 
   "es6.destructuring":                     require("./es6/destructuring"),
 
+  regenerator:                             require("./other/regenerator"),
+
   // needs to be after `regenerator` due to needing `regeneratorRuntime` references
   // needs to be after `es6.forOf` due to needing `Symbol.iterator` references
   // needs to be before `es6.modules` due to dynamic imports

lib/6to5/transformation/transformers/internal/modules.js

@@ -8,7 +8,18 @@
 
 var t = require("../../../types");
 
+var resolveModuleSource = function (node, parent, scope, context, file) {
+  var resolveModuleSource = file.opts.resolveModuleSource;
+  if (node.source && resolveModuleSource) {
+    node.source.value = resolveModuleSource(node.source.value);
+  }
+};
+
+exports.ImportDeclaration = resolveModuleSource;
+
 exports.ExportDeclaration = function (node, parent, scope) {
+  resolveModuleSource.apply(null, arguments);
+
   var declar = node.declaration;
 
   if (node.default) {

lib/6to5/transformation/transformers/other/react.js

@@ -8,8 +8,10 @@
 var esutils = require("esutils");
 var t       = require("../../../types");
 
-exports.JSXIdentifier = function (node) {
-  if (esutils.keyword.isIdentifierName(node.name)) {
+exports.JSXIdentifier = function (node, parent) {
+  if (node.name === "this" && t.isReferenced(node, parent)) {
+    return t.thisExpression();
+  } else if (esutils.keyword.isIdentifierName(node.name)) {
     node.type = "Identifier";
   } else {
     return t.literal(node.name);

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

@@ -17,5 +17,5 @@ exports.FunctionExpression = function (node, parent, scope, context) {
 };
 
 exports.ThisExpression = function (node, parent, scope, context, file) {
-  throw file.errorWithNode(node, "Top level `this` is not allowed", ReferenceError);
+  throw file.errorWithNode(node, "Top level `this` is `undefined` in strict mode", ReferenceError);
 };

lib/6to5/transformation/transformers/playground/mallet-operator.js

@@ -1,7 +1,9 @@
 "use strict";
 
 var build = require("../../helpers/build-conditional-assignment-operator-transformer");
-var t      = require("../../../types");
+var t     = require("../../../types");
+
+exports.playground = true;
 
 build(exports, {
   is: function (node, file) {

lib/6to5/transformation/transformers/playground/memoization-operator.js

@@ -3,6 +3,8 @@
 var build = require("../../helpers/build-conditional-assignment-operator-transformer");
 var t     = require("../../../types");
 
+exports.playground = true;
+
 build(exports, {
   is: function (node) {
     var is = t.isAssignmentExpression(node) && node.operator === "?=";

lib/6to5/transformation/transformers/playground/method-binding.js

@@ -2,6 +2,8 @@
 
 var t = require("../../../types");
 
+exports.playground = true;
+
 exports.BindMemberExpression = function (node, parent, scope) {
   var object = node.object;
   var prop   = node.property;

lib/6to5/transformation/transformers/playground/object-getter-memoization.js

@@ -3,6 +3,8 @@
 var traverse = require("../../../traverse");
 var t        = require("../../../types");
 
+exports.playground = true;
+
 var visitor = {
   enter: function (node, parent, scope, context, state) {
     if (t.isFunction(node)) return;

lib/6to5/transformation/transformers/spec/block-scoped-functions.js

@@ -3,13 +3,13 @@
 var t = require("../../../types");
 
 exports.BlockStatement = function (node, parent) {
-  if (t.isFunction(parent) || t.isExportDeclaration(parent)) {
+  if ((t.isFunction(parent) && parent.body === node) || t.isExportDeclaration(parent)) {
     return;
   }
 
   for (var i = 0; i < node.body.length; i++) {
     var func = node.body[i];
-    if (!t.isFunctionDeclaration(i)) continue;
+    if (!t.isFunctionDeclaration(func)) continue;
 
     var declar = t.variableDeclaration("let", [
       t.variableDeclarator(func.id, t.toExpression(func))
@@ -21,6 +21,6 @@ exports.BlockStatement = function (node, parent) {
     // todo: name this
     func.id = null;
 
-    func.body[i] = declar;
+    node.body[i] = declar;
   }
 };

lib/6to5/transformation/transformers/validation/undeclared-variable-check.js

@@ -1,9 +1,38 @@
 "use strict";
 
+var levenshtein = require("../../../helpers/levenshtein");
+var t           = require("../../../types");
+
 exports.optional = true;
 
 exports.Identifier = function (node, parent, scope, context, file) {
-  if (!scope.has(node.name, true)) {
-    throw file.errorWithNode(node, "Reference to undeclared variable", ReferenceError);
+  if (!t.isReferenced(node, parent)) return;
+  if (scope.has(node.name, true)) return;
+
+  var msg = "Reference to undeclared variable";
+
+  // get the closest declaration to offer as a suggestion
+  // the variable name may have just been mistyped
+
+  var declarations = scope.getAllDeclarations();
+
+  var closest;
+  var shortest = -1;
+
+  for (var name in declarations) {
+    var distance = levenshtein(node.name, name);
+    if (distance <= 0 || distance > 3) continue;
+    if (distance <= shortest) continue;
+
+    closest = name;
+    shortest = distance;
   }
+
+  if (closest) {
+    msg += " - Did you mean " + closest + "?";
+  }
+
+  //
+
+  throw file.errorWithNode(node, msg, ReferenceError);
 };

lib/6to5/traverse/global-keys.json

@@ -1,64 +0,0 @@
-[
-  "Set",
-  "Map",
-  "WeakMap",
-  "WeakSet",
-  "Proxy",
-  "Promise",
-  "Reflect",
-  "Symbol",
-  "System",
-  "__filename",
-  "__dirname",
-  "GLOBAL",
-  "global",
-  "module",
-  "require",
-  "Buffer",
-  "console",
-  "exports",
-  "process",
-  "setTimeout",
-  "clearTimeout",
-  "setInterval",
-  "clearInterval",
-  "setImmediate",
-  "clearImmediate",
-  "Array",
-  "Boolean",
-  "Date",
-  "decodeURI",
-  "decodeURIComponent",
-  "encodeURI",
-  "encodeURIComponent",
-  "Error",
-  "eval",
-  "EvalError",
-  "Function",
-  "hasOwnProperty",
-  "isFinite",
-  "isNaN",
-  "JSON",
-  "Map",
-  "Math",
-  "Number",
-  "Object",
-  "Proxy",
-  "Promise",
-  "parseInt",
-  "parseFloat",
-  "RangeError",
-  "ReferenceError",
-  "RegExp",
-  "Set",
-  "String",
-  "SyntaxError",
-  "TypeError",
-  "URIError",
-  "WeakMap",
-  "WeakSet",
-  "arguments",
-  "NaN",
-  "window",
-  "self"
-]

lib/6to5/traverse/index.js

@@ -237,6 +237,20 @@ traverse.removeProperties = function (tree) {
   return tree;
 };
 
+traverse.explode = function (obj) {
+  for (var type in obj) {
+    var fns = obj[type];
+
+    var aliases = t.FLIPPED_ALIAS_KEYS[type];
+    if (aliases) {
+      for (var i = 0; i < aliases.length; i++) {
+        obj[aliases[i]] = fns;
+      }
+    }
+  }
+  return obj;
+};
+
 function hasBlacklistedType(node, parent, scope, context, state) {
   if (node.type === state.type) {
     state.has = true;

lib/6to5/traverse/scope.js

@@ -3,11 +3,13 @@
 module.exports = Scope;
 
 var traverse = require("./index");
+var globals  = require("globals");
 var object   = require("../helpers/object");
 var t        = require("../types");
 var each     = require("lodash/collection/each");
 var has      = require("lodash/object/has");
 var contains = require("lodash/collection/contains");
+var flatten  = require("lodash/array/flatten");
 var defaults = require("lodash/object/defaults");
 
 var FOR_KEYS = ["left", "init"];
@@ -35,12 +37,12 @@ function Scope(block, parentBlock, parent, file) {
   this.declarationKinds = info.declarationKinds;
 }
 
-Scope.defaultDeclarations = require("./global-keys");
+Scope.defaultDeclarations = flatten([globals.builtin, globals.browser, globals.node].map(Object.keys));
 
 Scope.prototype._add = function (node, references, throwOnDuplicate) {
   if (!node) return;
 
-  var ids = t.getIds(node, true);
+  var ids = t.getDeclarations(node);
 
   for (var key in ids) {
     var id = ids[key];
@@ -324,12 +326,31 @@ Scope.prototype.getFunctionParent = function () {
 };
 
 /**
- * Walks the scope tree and gathers all declarations of `kind`.
+ * Walks the scope tree and gathers **all** declarations.
  *
  * @returns {Object}
  */
 
-Scope.prototype.getAllOfKind = function (kind) {
+Scope.prototype.getAllDeclarations = function () {
+  var ids = object();
+
+  var scope = this;
+  do {
+    defaults(ids, scope.declarations);
+    scope = scope.parent;
+  } while (scope);
+
+  return ids;
+};
+
+/**
+ * Walks the scope tree and gathers all declarations of `kind`.
+ *
+ * @param {String} kind
+ * @returns {Object}
+ */
+
+Scope.prototype.getAllDeclarationsOfKind = function (kind) {
   var ids = object();
 
   var scope = this;
@@ -385,8 +406,11 @@ Scope.prototype.parentGet = function (id, decl) {
  */
 
 Scope.prototype.has = function (id, decl) {
-  return (id && (this.hasOwn(id, decl) || this.parentHas(id, decl))) ||
-         contains(Scope.defaultDeclarations, id);
+  if (!id) return false;
+  if (this.hasOwn(id, decl)) return true;
+  if (this.parentHas(id, decl)) return true;
+  if (contains(Scope.defaultDeclarations, id)) return true;
+  return false;
 };
 
 /**

lib/6to5/types/index.js

@@ -8,15 +8,10 @@ var each             = require("lodash/collection/each");
 var uniq             = require("lodash/array/uniq");
 var compact          = require("lodash/array/compact");
 var defaults         = require("lodash/object/defaults");
-var keys             = require("lodash/object/keys");
 var isString         = require("lodash/lang/isString");
 
 var t = exports;
 
-t.NATIVE_TYPE_NAMES = ["Array", "Object", "Number", "Boolean", "Date", "Array", "String"];
-
-//
-
 /**
  * Registers `is[Type]` and `assert[Type]` generated functions for a given `type`.
  * Pass `skipAliasCheck` to force it to directly compare `node.type` with `type`.
@@ -39,8 +34,7 @@ function registerType(type, skipAliasCheck) {
 }
 
 t.STATEMENT_OR_BLOCK_KEYS = ["consequent", "body"];
-
-//
+t.NATIVE_TYPE_NAMES = ["Array", "Object", "Number", "Boolean", "Date", "Array", "String"];
 
 t.VISITOR_KEYS = require("./visitor-keys");
 
@@ -66,6 +60,7 @@ each(t.FLIPPED_ALIAS_KEYS, function (types, type) {
 
 /**
  * Returns whether `node` is of given `type`.
+ *
  * For better performance, use this instead of `is[Type]` when `type` is unknown.
  * Optionally, pass `skipAliasCheck` to directly compare `node.type` with `type`.
  *
@@ -156,6 +151,9 @@ t.isFalsyExpression = function (node) {
  * declarations hoisted to the top of the current scope.
  *
  * Expression statements are just resolved to their standard expression.
+ *
+ * @param {Array} nodes
+ * @param {Scope} scope
  */
 
 t.toSequenceExpression = function (nodes, scope) {
@@ -185,17 +183,23 @@ t.toSequenceExpression = function (nodes, scope) {
   }
 };
 
-//
+/*
+ * Description
+ *
+ * @param {Object} actual
+ * @param {Object} expected
+ * @returns {Boolean}
+ */
 
 t.shallowEqual = function (actual, expected) {
   var keys = Object.keys(expected);
-  var key;
 
   for (var i = 0; i < keys.length; i++) {
-    key = keys[i];
+    var key = keys[i];
 
-    if (actual[key] !== expected[key])
+    if (actual[key] !== expected[key]) {
       return false;
+    }
   }
 
   return true;
@@ -330,7 +334,7 @@ t.isReferenced = function (node, parent) {
 };
 
 /**
- * Description
+ * Check if the input `node` is an `Identifier` and `isReferenced`.
  *
  * @param {Object} node
  * @param {Object} parent
@@ -342,7 +346,8 @@ t.isReferencedIdentifier = function (node, parent) {
 };
 
 /**
- * Description
+ * Check if the input `name` is a valid identifier name
+ * and isn't a reserved word.
  *
  * @param {String} name
  * @returns {Boolean}
@@ -502,12 +507,10 @@ t.toBlock = function (node, parent) {
  * declaration then it's assumed to be an assignable.
  *
  * @param {Object} node
- * @param {Boolean} [map]
- * @param {Array} [ignoreTypes]
  * @returns {Array|Object}
  */
 
-t.getIds = function (node, map, ignoreTypes) {
+t.getDeclarations = function (node) {
   var search = [].concat(node);
   var ids    = object();
 
@@ -515,13 +518,7 @@ t.getIds = function (node, map, ignoreTypes) {
     var id = search.shift();
     if (!id) continue;
 
-    // blacklist types
-    if (ignoreTypes && ignoreTypes.indexOf(id.type) >= 0) continue;
-
-    var nodeKeys = t.getIds.nodes[id.type];
-    var arrKeys  = t.getIds.arrays[id.type];
-
-    var i, key;
+    var keys = t.getDeclarations.keys[id.type];
 
     if (t.isIdentifier(id)) {
       ids[id.name] = id;
@@ -529,27 +526,18 @@ t.getIds = function (node, map, ignoreTypes) {
       if (t.isDeclaration(node.declaration)) {
         search.push(node.declaration);
       }
-    } else if (nodeKeys) {
-      for (i = 0; i < nodeKeys.length; i++) {
-        key = nodeKeys[i];
-        if (id[key]) {
-          search.push(id[key]);
-          break;
-        }
-      }
-    } else if (arrKeys) {
-      for (i = 0; i < arrKeys.length; i++) {
-        key = arrKeys[i];
+    } else if (keys) {
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
         search = search.concat(id[key] || []);
       }
     }
   }
 
-  if (!map) ids = keys(ids);
   return ids;
 };
 
-t.getIds.nodes = {
+t.getDeclarations.keys = {
   AssignmentExpression: ["left"],
   ImportBatchSpecifier: ["name"],
   ImportSpecifier: ["name", "id"],
@@ -562,10 +550,7 @@ t.getIds.nodes = {
   RestElement: ["argument"],
   Property: ["value"],
   ComprehensionBlock: ["left"],
-  AssignmentPattern: ["left"]
-};
-
-t.getIds.arrays = {
+  AssignmentPattern: ["left"],
   PrivateDeclaration: ["declarations"],
   ComprehensionExpression: ["blocks"],
   ImportDeclaration: ["specifiers"],

lib/6to5/util.js

@@ -121,7 +121,12 @@ exports.buildDefineProperties = function (mutatorMap) {
       map.writable = t.literal(true);
     }
 
-    map.enumerable = map.enumerable || t.literal(true);
+    if (map.enumerable === false) {
+      delete map.enumerable;
+    } else {
+      map.enumerable = t.literal(true);
+    }
+
     map.configurable = t.literal(true);
 
     each(map, function (node, key) {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "3.1.0",
+  "version": "3.3.1",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://6to5.org/",
   "repository": "6to5/6to5",
@@ -9,7 +9,8 @@
   "main": "lib/6to5/index.js",
   "bin": {
     "6to5": "./bin/6to5/index.js",
-    "6to5-node": "./bin/6to5-node"
+    "6to5-node": "./bin/6to5-node",
+    "6to5-runtime": "./bin/6to5-runtime"
   },
   "browser": {
     "./lib/6to5/index.js": "./lib/6to5/browser.js",
@@ -42,13 +43,13 @@
     "detect-indent": "3.0.0",
     "estraverse": "1.9.1",
     "esutils": "1.1.6",
-    "esvalid": "1.1.0",
     "fs-readdir-recursive": "0.1.0",
+    "globals": "^5.1.0",
     "js-tokenizer": "1.3.3",
     "lodash": "3.0.0",
     "output-file-sync": "1.1.0",
     "private": "0.1.6",
-    "regenerator-6to5": "0.8.9-7",
+    "regenerator-6to5": "0.8.9-8",
     "regexpu": "1.1.0",
     "roadrunner": "1.0.4",
     "source-map": "0.1.43",
@@ -59,6 +60,7 @@
   "devDependencies": {
     "browserify": "8.1.1",
     "chai": "1.10.0",
+    "esvalid": "1.1.0",
     "istanbul": "0.3.5",
     "jscs": "1.10.0",
     "jshint": "2.6.0",

packages/6to5-runtime/package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5-runtime",
   "description": "6to5 selfContained runtime",
-  "version": "3.0.16",
+  "version": "3.3.0",
   "repository": "6to5/6to5",
   "author": "Sebastian McKenzie <sebmck@gmail.com>"
 }

packages/build-runtime.js

@@ -1,11 +1,10 @@
 "use strict";
 
-var transform = require("../lib/6to5/transformation/transform");
-var File      = require("../lib/6to5/file");
-var util      = require("../lib/6to5/util");
-var fs        = require("fs");
-var t         = require("../lib/6to5/types");
-var _         = require("lodash");
+var buildHelpers = require("../lib/6to5/build-helpers");
+var transform    = require("../lib/6to5/transformation");
+var fs           = require("fs");
+var t            = require("../lib/6to5/types");
+var _            = require("lodash");
 
 var relative = function (filename) {
   return __dirname + "/6to5-runtime/" + filename;
@@ -31,23 +30,18 @@ var updatePackage = function () {
   writeFile("package.json", JSON.stringify(pkg, null, 2));
 };
 
-var buildHelpers = function () {
+var buildHelpers2 = function () {
   var body = [];
   var tree = t.program(body);
 
-  _.each(File.helpers, function (name) {
-    var key = t.identifier(t.toIdentifier(name));
-    body.push(t.expressionStatement(
-      t.assignmentExpression("=", t.memberExpression(t.identifier("exports"), key), util.template(name))
-    ));
-  });
+  buildHelpers(body, t.identifier("exports"));
 
   return transform.fromAst(tree, null, {
     optional: ["selfContained"]
   }).code;
 };
 
-writeFile("helpers.js", buildHelpers());
+writeFile("helpers.js", buildHelpers2());
 writeFile("core-js.js", readFile("core-js/library"));
 writeFile("regenerator/index.js", readFile("regenerator-6to5/runtime-module"));
 writeFile("regenerator/runtime.js", readFile("regenerator-6to5/runtime"));

test/_helper.js

@@ -1,3 +1,4 @@
+var util = require("../lib/6to5/util");
 var path = require("path");
 var fs   = require("fs");
 var _    = require("lodash");
@@ -17,6 +18,13 @@ var readFile = exports.readFile = function (filename) {
   }
 };
 
+exports.assertVendor = function (name) {
+  if (!fs.existsSync(__dirname + "/../vendor/" + name)) {
+    console.error("No vendor/" + name + " - run `make bootstrap`");
+    process.exit(1);
+  }
+};
+
 exports.get = function (entryName, entryLoc) {
   if (exports.cache[entryName]) return exports.cache[entryName];
 
@@ -34,8 +42,8 @@ exports.get = function (entryName, entryLoc) {
     };
     suites.push(suite);
 
-    var suiteOptsLoc = suite.filename + "/options.json";
-    if (fs.existsSync(suiteOptsLoc)) suite.options = require(suiteOptsLoc);
+    var suiteOptsLoc = util.resolve(suite.filename + "/options");
+    if (suiteOptsLoc) suite.options = require(suiteOptsLoc);
 
     if (fs.statSync(suite.filename).isFile()) {
       push(suiteName, suite.filename);
@@ -71,8 +79,8 @@ exports.get = function (entryName, entryLoc) {
         sourceMapName:    expectLocAlias
       }, _.cloneDeep(suite.options));
 
-      var taskOptsLoc = taskDir + "/options.json";
-      if (fs.existsSync(taskOptsLoc)) _.merge(taskOpts, require(taskOptsLoc));
+      var taskOptsLoc = util.resolve(taskDir + "/options");
+      if (taskOptsLoc) _.merge(taskOpts, require(taskOptsLoc));
 
       var test = {
         title: humanise(taskName, true),

test/_transformation-helper.js

@@ -1,5 +1,5 @@
 var genHelpers = require("./_generator-helpers");
-var transform  = require("../lib/6to5/transformation/transform");
+var transform  = require("../lib/6to5/transformation");
 var sourceMap  = require("source-map");
 var codeFrame  = require("../lib/6to5/helpers/code-frame");
 var esvalid    = require("esvalid");
@@ -125,12 +125,14 @@ var run = function (task, done) {
 module.exports = function (suiteOpts, taskOpts, dynamicOpts) {
   taskOpts = taskOpts || {};
 
-  require("../register")(taskOpts);
-
   _.each(helper.get(suiteOpts.name, suiteOpts.loc), function (testSuite) {
     if (_.contains(suiteOpts.ignoreSuites, testSuite.title)) return;
 
     suite(suiteOpts.name + "/" + testSuite.title, function () {
+      setup(function () {
+        require("../register")(taskOpts);
+      });
+
       _.each(testSuite.tests, function (task) {
         if (_.contains(suiteOpts.ignoreTasks, task.title) || _.contains(suiteOpts.ignoreTasks, testSuite.title + "/" + task.title)) return;
 

test/api.js

@@ -1,4 +1,4 @@
-var transform = require("../lib/6to5/transformation/transform");
+var transform = require("../lib/6to5/transformation");
 var assert    = require("assert");
 var File      = require("../lib/6to5/file");
 

test/detection.js

@@ -0,0 +1,140 @@
+var detect = require("../lib/6to5/detection");
+var assert = require("assert");
+var util   = require("../lib/6to5/util");
+
+suite("detection", function () {
+  var checkSyntax = function (code, name) {
+    var ast = util.parse({
+      experimental: true
+    }, code);
+
+    assert.ok(detect(ast).syntax[name]);
+  };
+
+  test("es5.properties.mutators", function () {
+    checkSyntax("var obj = { get foo() {} };", "es5.properties.mutators");
+    checkSyntax("var obj = { set foo() {} };", "es5.properties.mutators");
+  });
+
+  test("es6.exponentation", function () {
+    checkSyntax("x ** 2;", "es6.exponentation");
+    checkSyntax("x **= 2;", "es6.exponentation");
+  });
+
+  test("es6.blockScoping", function () {
+    checkSyntax("let foo;", "es6.blockScoping");
+    checkSyntax("let foo = bar;", "es6.blockScoping");
+    checkSyntax("const foo = bar;", "es6.blockScoping");
+  });
+
+  test("es6.constants", function () {
+    checkSyntax("const foo = bar;", "es6.constants");
+  });
+
+  test("es6.properties.shorthand", function () {
+    checkSyntax("var obj = { foo };", "es6.properties.shorthand");
+    checkSyntax("var obj = { foo };", "es6.properties.shorthand");
+  });
+
+  test("es6.properties.computed", function () {
+    checkSyntax("var obj = { [foo]: bar };", "es6.properties.computed");
+    checkSyntax("var obj = { ['foo']: bar };", "es6.properties.computed");
+  });
+
+  test("es6.parameters.default", function () {
+    checkSyntax("var obj = (foo = bar) => {};", "es6.parameters.default");
+    checkSyntax("var obj = function (foo = bar) {};", "es6.parameters.default");
+    checkSyntax("function foo(foo = bar) {}", "es6.parameters.default");
+  });
+
+  test("es6.arrowFunctions", function () {
+    checkSyntax("var foo = x => x;", "es6.arrowFunctions");
+    checkSyntax("var foo = x => { return x * x };", "es6.arrowFunctions");
+    checkSyntax("var foo = (x) => x;", "es6.arrowFunctions");
+    checkSyntax("var foo = (a, b) => { return a * b };", "es6.arrowFunctions");
+  });
+
+  test("es6.classes", function () {
+    checkSyntax("class Foo {}", "es6.classes");
+    checkSyntax("var Foo = class {};", "es6.classes");
+  });
+
+  test("es6.forOf", function () {
+    checkSyntax("for (var val of foo);", "es6.forOf");
+    checkSyntax("for (val of foo);", "es6.forOf");
+  });
+
+  test("es6.modules", function () {
+    checkSyntax("import 'foo';", "es6.modules");
+    checkSyntax("import foo from 'foo';", "es6.modules");
+    checkSyntax("import * as foo from 'foo';", "es6.modules");
+    checkSyntax("import { foo } from 'foo';", "es6.modules");
+    checkSyntax("export { foo } from 'foo';", "es6.modules");
+    checkSyntax("export var foo = 5;", "es6.modules");
+    checkSyntax("export class Foo {}", "es6.modules");
+    checkSyntax("export function foo() {}", "es6.modules");
+    checkSyntax("export default class Foo {}", "es6.modules");
+    checkSyntax("export default function foo() {}", "es6.modules");
+  });
+
+  test("es6.destructuring", function () {
+    checkSyntax("[a, b] = [];", "es6.destructuring");
+    checkSyntax("var [a, b] = [];", "es6.destructuring");
+    checkSyntax("({ a, b }) = {};", "es6.destructuring");
+    checkSyntax("var { a, b } = {};", "es6.destructuring");
+    checkSyntax("function foo(foo = bar) {}", "es6.destructuring");
+  });
+
+  test("es6.parameters.rest", function () {
+    checkSyntax("function foo(...items) {}", "es6.parameters.rest");
+    checkSyntax("var foo = (...items) => {}", "es6.parameters.rest");
+  });
+
+  test("es6.spread", function () {
+    checkSyntax("new Foo(...items);", "es6.spread");
+    checkSyntax("foo(...items);", "es6.spread");
+    checkSyntax("[...items];", "es6.spread");
+  });
+
+  test("es6.templateLiterals", function () {
+    checkSyntax("`foobar`;", "es6.templateLiterals");
+    checkSyntax("foobar`foobar`;", "es6.templateLiterals");
+  });
+
+  test("es6.generators", function () {
+    checkSyntax("function* foo() {}", "es6.generators");
+    checkSyntax("var foo = function* () {};", "es6.generators");
+  });
+
+  test("es7.asyncFunctions", function () {
+    checkSyntax("async function foo() {}", "es7.asyncFunctions");
+    checkSyntax("var foo = async function() {};", "es7.asyncFunctions");
+    checkSyntax("var foo = async () => {};", "es7.asyncFunctions");
+  });
+
+  test("es7.comprehensions", function () {
+    checkSyntax("[for (i of test) i]", "es7.comprehensions");
+    checkSyntax("(for (i of test) i)", "es7.comprehensions");
+  });
+
+  test("es7.objectSpread", function () {
+    checkSyntax("var foo = { ...bar };", "es7.objectSpread");
+  });
+
+  test("es7.abstractReferences", function () {
+    checkSyntax("class Foo { private A; }", "es7.abstractReferences");
+    checkSyntax("foo::bar();", "es7.abstractReferences");
+    checkSyntax("delete foo::bar;", "es7.abstractReferences");
+    checkSyntax("foo::bar;", "es7.abstractReferences");
+    checkSyntax("foo::bar = baz;", "es7.abstractReferences");
+  });
+
+  test("flow", function () {
+
+  });
+
+  test("jsx", function () {
+    checkSyntax("<div />", "jsx");
+    checkSyntax("<Element />", "jsx");
+  });
+});

test/fixtures/esnext/es6-classes/getter-setter-super.js

@@ -2,6 +2,14 @@ class Base {
   get sound() {
     return 'I am a ' + this.type + '.';
   }
+
+  get name() {
+    return this._name;
+  }
+
+  set name(val) {
+    this._name = val;
+  }
 }
 
 class Animal extends Base {}
@@ -12,6 +20,18 @@ class Cat extends Animal {
   get sound() {
     return super.sound + ' MEOW!';
   }
+
+  get name() {
+    return super.name;
+  }
+
+  set name(val) {
+    super.name = val + ' Cat';
+  }
 }
 
-assert.equal(new Cat().sound, 'I am a cat. MEOW!');
+var cat = new Cat();
+
+assert.equal(cat.sound, 'I am a cat. MEOW!');
+cat.name = 'Nyan';
+assert.equal(cat.name, 'Nyan Cat');

test/fixtures/transformation/api/resolve-module-source/actual.js

@@ -0,0 +1,3 @@
+export { foo } from "foo-export-named";
+import foo from "foo-import-default";
+import "foo-import-bare";

test/fixtures/transformation/api/resolve-module-source/expected.js

@@ -0,0 +1,5 @@
+"use strict";
+
+export { foo } from "resolved/foo-export-named";
+import foo from "resolved/foo-import-default";
+import "resolved/foo-import-bare";

test/fixtures/transformation/api/resolve-module-source/options.js

@@ -0,0 +1,5 @@
+exports.blacklist = ["es6.modules"];
+
+exports.resolveModuleSource = function (originalSource) {
+  return "resolved/" + originalSource;
+};

test/fixtures/transformation/async-to-generator/async/expected.js

@@ -12,7 +12,6 @@ var Foo = (function () {
       value: _asyncToGenerator(function* () {
         var wat = yield bar();
       }),
-      enumerable: false,
       writable: true,
       configurable: true
     }

test/fixtures/transformation/bluebird-coroutines/class/expected.js

@@ -12,7 +12,6 @@ var Foo = (function () {
       value: _bluebird.coroutine(function* () {
         var wat = yield bar();
       }),
-      enumerable: false,
       writable: true,
       configurable: true
     }

test/fixtures/transformation/es6-block-scoping-exec/label.js

@@ -0,0 +1,15 @@
+var heh = [];
+var nums = [1, 2, 3];
+
+loop1:
+for (let i in nums) {
+  let num = nums[i];
+  heh.push(x => x * num);
+  if (num >= 2) {
+    break loop1;
+  }
+}
+
+assert.equal(heh.length, 2);
+assert.equal(heh[0](2), 2);
+assert.equal(heh[1](4), 8);

test/fixtures/transformation/es6-block-scoping-exec/multiple.js

@@ -0,0 +1,4 @@
+for (let i = 0, x = 2; i < 5; i++);
+
+assert.ok(typeof i === "undefined");
+assert.ok(typeof x === "undefined");

test/fixtures/transformation/es6-block-scoping-exec/nested-labels-2.js

@@ -0,0 +1,22 @@
+(function () {
+  var stack = [];
+
+  loop1:
+  for (let j = 0; j < 10; j++) {
+    for (let i = 0; i < 10; i++) {
+      stack.push(() => [i, j]);
+      break;
+    }
+  }
+
+  assert.deepEqual(stack[0](), [0, 0]);
+  assert.deepEqual(stack[1](), [0, 1]);
+  assert.deepEqual(stack[2](), [0, 2]);
+  assert.deepEqual(stack[3](), [0, 3]);
+  assert.deepEqual(stack[4](), [0, 4]);
+  assert.deepEqual(stack[5](), [0, 5]);
+  assert.deepEqual(stack[6](), [0, 6]);
+  assert.deepEqual(stack[7](), [0, 7]);
+  assert.deepEqual(stack[8](), [0, 8]);
+  assert.deepEqual(stack[9](), [0, 9]);
+})();

test/fixtures/transformation/es6-block-scoping-exec/nested-labels-3.js

@@ -0,0 +1,25 @@
+(function () {
+  var stack = [];
+
+  loop1:
+  for (let j = 0; j < 10; j++) {
+    loop2:
+    for (let i = 0; i < 10; i++) {
+      for (let x = 0; x < 10; x++) {
+        stack.push(() => [j, i, x]);
+        continue loop2;
+      }
+    }
+  }
+
+  assert.deepEqual(stack[0](), [0, 0, 0]);
+  assert.deepEqual(stack[1](), [0, 1, 0]);
+  assert.deepEqual(stack[2](), [0, 2, 0]);
+  assert.deepEqual(stack[3](), [0, 3, 0]);
+  assert.deepEqual(stack[4](), [0, 4, 0]);
+  assert.deepEqual(stack[5](), [0, 5, 0]);
+  assert.deepEqual(stack[6](), [0, 6, 0]);
+  assert.deepEqual(stack[7](), [0, 7, 0]);
+  assert.deepEqual(stack[8](), [0, 8, 0]);
+  assert.deepEqual(stack[9](), [0, 9, 0]);
+})();

test/fixtures/transformation/es6-block-scoping-exec/nested-labels-4.js

@@ -0,0 +1,14 @@
+(function () {
+  var stack = [];
+
+  loop1:
+  for (let j = 0; j < 10; j++) {
+    for (let i = 0; i < 10; i++) {
+      stack.push(() => [i, j]);
+      break loop1;
+    }
+  }
+
+  assert.deepEqual(stack.length, 1);
+  assert.deepEqual(stack[0](), [0, 0]);
+})();

test/fixtures/transformation/es6-block-scoping-exec/nested-labels.js

@@ -0,0 +1,22 @@
+(function () {
+  var stack = [];
+
+  loop1:
+  for (let j = 0; j < 10; j++) {
+    for (let i = 0; i < 10; i++) {
+      stack.push(() => [i, j]);
+      continue loop1;
+    }
+  }
+
+  assert.deepEqual(stack[0](), [0, 0]);
+  assert.deepEqual(stack[1](), [0, 1]);
+  assert.deepEqual(stack[2](), [0, 2]);
+  assert.deepEqual(stack[3](), [0, 3]);
+  assert.deepEqual(stack[4](), [0, 4]);
+  assert.deepEqual(stack[5](), [0, 5]);
+  assert.deepEqual(stack[6](), [0, 6]);
+  assert.deepEqual(stack[7](), [0, 7]);
+  assert.deepEqual(stack[8](), [0, 8]);
+  assert.deepEqual(stack[9](), [0, 9]);
+})();

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

@@ -1,7 +1,7 @@
 "use strict";
 
 (function () {
-  _loop: for (var i in nums) {
+  for (var i in nums) {
     var _ret = (function (i) {
       fns.push(function () {
         return i;
@@ -18,10 +18,10 @@
     })(i);
 
     switch (_ret) {
-      case "break":
-        break _loop;
       case "continue":
-        continue _loop;
+        continue;
+      case "break":
+        break;
       default:
         if (typeof _ret === "object") return _ret.v;
     }

test/fixtures/transformation/es6-block-scoping/for-break/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-_loop: for (var i in nums) {
+for (var i in nums) {
   var _ret = (function (i) {
     fns.push(function () {
       return i;
@@ -8,5 +8,5 @@ _loop: for (var i in nums) {
     return "break";
   })(i);
 
-  if (_ret === "break") break _loop;
+  if (_ret === "break") break;
 }

test/fixtures/transformation/es6-block-scoping/for-continue/expected.js

@@ -1,6 +1,6 @@
 "use strict";
 
-_loop: for (var i in nums) {
+for (var i in nums) {
   var _ret = (function (i) {
     fns.push(function () {
       return i;
@@ -8,5 +8,5 @@ _loop: for (var i in nums) {
     return "continue";
   })(i);
 
-  if (_ret === "continue") continue _loop;
+  if (_ret === "continue") continue;
 }

test/fixtures/transformation/es6-classes/accessing-super-class/expected.js

@@ -31,7 +31,6 @@ var Test = (function (Foo) {
         _get(Object.getPrototypeOf(Test), "foo", this).apply(this, arguments);
         (_get2 = _get(Object.getPrototypeOf(Test), "foo", this)).call.apply(_get2, [this, "test"].concat(_slice.call(arguments)));
       },
-      enumerable: false,
       writable: true,
       configurable: true
     }
@@ -43,7 +42,6 @@ var Test = (function (Foo) {
         _get(Object.getPrototypeOf(Test.prototype), "test", this).apply(this, arguments);
         (_get2 = _get(Object.getPrototypeOf(Test.prototype), "test", this)).call.apply(_get2, [this, "test"].concat(_slice.call(arguments)));
       },
-      enumerable: false,
       writable: true,
       configurable: true
     }

test/fixtures/transformation/es6-classes/calling-super-properties/expected.js

@@ -19,7 +19,6 @@ var Test = (function (Foo) {
       value: function test() {
         return _get(Object.getPrototypeOf(Test), "wow", this).call(this);
       },
-      enumerable: false,
       writable: true,
       configurable: true
     }

test/fixtures/transformation/es6-classes/instance-getter-and-setter/expected.js

@@ -10,7 +10,6 @@ var Test = (function () {
       get: function () {
         return 5 + 5;
       },
-      enumerable: false,
       set: function (val) {
         this._test = val;
       },

test/fixtures/transformation/es6-classes/instance-getter/expected.js

@@ -10,7 +10,6 @@ var Test = (function () {
       get: function () {
         return 5 + 5;
       },
-      enumerable: false,
       configurable: true
     }
   });

test/fixtures/transformation/es6-classes/instance-method/expected.js

@@ -10,7 +10,6 @@ var Test = (function () {
       value: function test() {
         return 5 + 5;
       },
-      enumerable: false,
       writable: true,
       configurable: true
     }

test/fixtures/transformation/es6-classes/instance-setter/expected.js

@@ -10,7 +10,6 @@ var Test = (function () {
       set: function (val) {
         this._test = val;
       },
-      enumerable: false,
       configurable: true
     }
   });

test/fixtures/transformation/es6-classes/statement/expected.js

@@ -18,7 +18,6 @@ var BaseView = (function () {
       value: function foo() {
         this.autoRender = true;
       },
-      enumerable: false,
       writable: true,
       configurable: true
     }

test/fixtures/transformation/es6-classes/static/expected.js

@@ -8,13 +8,11 @@ var A = (function () {
   _prototypeProperties(A, {
     a: {
       value: function a() {},
-      enumerable: false,
       writable: true,
       configurable: true
     },
     b: {
       get: function () {},
-      enumerable: false,
       set: function (b) {},
       configurable: true
     }

test/fixtures/transformation/es6-let-scoping/.switch-break/exec.js

@@ -1,11 +0,0 @@
-if (true) {
-  const x = 1;
-  switch (x) {
-    case 1: {
-      function y() {
-        assert(x, 1);
-      };
-      break;
-    }
-  }
-}

test/fixtures/transformation/es6-parameters.rest/pattern/actual.js

@@ -0,0 +1,3 @@
+var foo = function (...[a, b]) {
+
+};

test/fixtures/transformation/es6-parameters.rest/pattern/expected.js

@@ -0,0 +1,14 @@
+"use strict";
+
+var _slicedToArray = function (arr, i) { 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 foo = function () {
+  for (var _len = arguments.length, _ref = Array(_len), _key = 0; _key < _len; _key++) {
+    _ref[_key] = arguments[_key];
+  }
+
+  var _ref2 = _slicedToArray(_ref, 2);
+
+  var a = _ref2[0];
+  var b = _ref2[1];
+};

test/fixtures/transformation/playground/object-getter-memoization/expected.js

@@ -12,14 +12,12 @@ var Foo = (function () {
       get: function () {
         return _defineProperty(this, "bar", complex()).bar;
       },
-      enumerable: false,
       configurable: true
     }
   }, bar, {
     get: function () {
       return _defineProperty(this, bar, complex())[bar];
     },
-    enumerable: false,
     configurable: true
   }));
 

test/fixtures/transformation/react/arrow-functions/actual.js

@@ -0,0 +1,7 @@
+var foo = function () {
+  return () => <this />;
+};
+
+var bar = function () {
+  return () => <this.foo />;
+};

test/fixtures/transformation/react/arrow-functions/expected.js

@@ -0,0 +1,13 @@
+var foo = function () {
+  var _this = this;
+  return function () {
+    return React.createElement(_this, null);
+  };
+};
+
+var bar = function () {
+  var _this = this;
+  return function () {
+    return React.createElement(_this.foo, null);
+  };
+};

test/fixtures/transformation/regenerator/destructuring-parameters/exec.js

@@ -0,0 +1,5 @@
+function* foo({ bar }) {
+  return bar;
+}
+
+assert(foo({ bar: "bar" }).next().value, "bar");

test/fixtures/transformation/regenerator/destructuring/exec.js

@@ -1,5 +1,13 @@
-function* foo({ bar }) {
+function* foo() {
+  var { bar } = { bar: "bar" };
   return bar;
 }
 
-assert(foo({ bar: "bar" }).next().value, "bar");
+assert.equal(foo().next().value, "bar");
+
+function* foo2({ bar = 0 }) {
+  return bar;
+}
+
+assert.equal(foo2({ bar: undefined }).next().value, 0);
+assert.equal(foo2({ bar: 3 }).next().value, 3);

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

@@ -0,0 +1 @@
+import foo from "foo";

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

@@ -0,0 +1,6 @@
+define(["exports", "foo", "6to5-runtime/helpers"], function (exports, _foo, _to5RuntimeHelpers) {
+  "use strict";
+
+  var _to5Helpers = _to5RuntimeHelpers;
+  var foo = _to5Helpers.interopRequire(_foo);
+});

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

@@ -0,0 +1 @@
+import foo from "foo";

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

@@ -0,0 +1,5 @@
+"use strict";
+
+var _to5Helpers = require("6to5-runtime/helpers");
+
+var foo = _to5Helpers.interopRequire(require("foo"));

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

@@ -0,0 +1 @@
+foo(...bar);

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

@@ -0,0 +1,13 @@
+System.register(["6to5-runtime/helpers"], function (_export) {
+  "use strict";
+
+  var _to5Helpers;
+  return {
+    setters: [function (_to5RuntimeHelpers) {
+      _to5Helpers = _to5RuntimeHelpers;
+    }],
+    execute: function () {
+      foo.apply(undefined, _to5Helpers.toArray(bar));
+    }
+  };
+});