v1.13.12

Add "register" module formatter

CHANGELOG.md

@@ -1,3 +1,14 @@
+# 1.13.12
+
+ * Ignore `XJSEmptyExpression`s in `react` transformer output.
+
+# 1.13.11
+
+ * Fix `util.regexify` on falsy values.
+ * Fix `_aliasFunction` with rest parameters.
+ * Export as `module.exports` instead of `exports.default` if there are no other `ExportDeclaration`s in `commonInterop` module formatter.
+ * Add `system` module formatter. Thanks [@douglasduteil](https://github.com/douglasduteil).
+
 # 1.13.10
 
  * Add support for `AssignmentExpression` destructuring outside of `ExpressionStatement`.

doc/modules.md

@@ -15,6 +15,13 @@ to5.transform('import "foo";', { modules: "common" });
 
 ## Formats
 
+ * [AMD](#amd)
+ * [Common (Default)](#common-default)
+ * [Common](#common)
+ * [Ignore](#ignore)
+ * [System](#system)
+ * [UMD](#umd)
+
 ### Common (Default)
 
 **In**
@@ -51,6 +58,69 @@ var test = 5; exports.test = test;
 exports.default = test;
 ```
 
+### Common interop
+
+**In**
+
+```javascript
+import "foo";
+
+import foo from "foo";
+import * as foo from "foo";
+
+import {bar} from "foo";
+import {foo as bar} from "foo";
+
+export {test};
+export var test = 5;
+
+export default test;
+```
+
+**Out**
+
+```javascript
+var _interopRequire = function (obj) {
+  return obj && (obj["default"] || obj);
+};
+
+require("foo");
+
+var foo = _interopRequire(require("foo"));
+var foo = require("foo");
+
+var bar = require("foo").bar;
+var bar = require("foo").foo;
+
+exports.test = test;
+var test = exports.test = 5;
+
+exports["default"] = test;
+```
+
+#### module.exports behaviour
+
+If there exist no other non-default `export`s then `default exports` are
+exported as `module.exports` instead of `exports.default`.
+
+**In**
+
+```javascript
+export default function foo() {
+
+}
+```
+
+**Out**
+
+```javascript
+module.exports = foo;
+
+function foo() {
+
+}
+```
+
 ### AMD
 
 **In**
@@ -135,6 +205,41 @@ function bar() {
 }
 ```
 
+### System
+
+**In**
+
+```javascript
+import foo from "foo";
+
+export function bar() {
+  return foo("foobar");
+}
+```
+
+**Out**
+
+```javascript
+System.register("bar", ["foo"], function (_export) {
+  "use strict";
+
+  var __moduleName = "bar";
+
+  var foo;
+  function bar() {
+    return foo("foobar");
+  }
+  return {
+    setters: [function (m) {
+      foo = m.default;
+    }],
+    execute: function () {
+      _export("bar", bar);
+    }
+  };
+});
+```
+
 ## Custom
 
 You can alternatively specify module names instead of one of the built-in types.

lib/6to5/file.js

@@ -10,9 +10,7 @@ var t         = require("./types");
 var _         = require("lodash");
 
 function File(opts) {
-  this.opts            = File.normaliseOptions(opts);
-  this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
-
+  this.opts = File.normaliseOptions(opts);
   this.uids = {};
   this.ast  = {};
 }
@@ -168,6 +166,7 @@ File.prototype.parse = function (code) {
 File.prototype.transform = function (ast) {
   this.ast = ast;
   this.scope = new Scope(ast.program);
+  this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
 
   var self = this;
 

lib/6to5/patch.js

@@ -3,6 +3,7 @@ var _ = require("lodash");
 
 var types = require("ast-types");
 var def   = types.Type.def;
+var or    = types.Type.or;
 
 // Program wrapper
 def("File")
@@ -16,12 +17,19 @@ def("ParenthesizedExpression")
   .build("expression")
   .field("expression", def("Expression"));
 
-// Same as ImportNamespaceSpecifier but `id` is `name`
+// Acorn - Same as ImportNamespaceSpecifier but `id` is `name`
 def("ImportBatchSpecifier")
   .bases("Specifier")
   .build("name")
   .field("name", def("Identifier"));
 
+// Abstract references
+def("VirtualPropertyExpression")
+  .bases("Expression")
+  .build("object", "property")
+  .field("object", def("Expression"))
+  .field("property", or(def("Identifier"), def("Expression")));
+
 types.finalize();
 
 var estraverse = require("estraverse");

lib/6to5/templates/exports-default-module.js

@@ -0,0 +1 @@
+module.exports = VALUE;

lib/6to5/templates/register.js

@@ -0,0 +1 @@
+System.register(MODULE_NAME, MODULE_DEPENDENCIES, MODULE_BODY);

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

@@ -41,34 +41,11 @@ AMDFormatter.prototype.transform = function (ast) {
 };
 
 AMDFormatter.prototype.getModuleName = function () {
-  var opts = this.file.opts;
-  var filenameRelative = opts.filenameRelative;
-  var moduleName = "";
-
-  if (!opts.amdModuleIds) {
+  if (this.file.opts.amdModuleIds) {
+    return CommonJSFormatter.prototype.getModuleName.apply(this, arguments);
+  } else {
     return null;
   }
-
-  if (opts.moduleRoot) {
-    moduleName = opts.moduleRoot + "/";
-  }
-
-  if (!opts.filenameRelative) {
-    return moduleName + opts.filename.replace(/^\//, "");
-  }
-
-  if (opts.sourceRoot) {
-    // remove sourceRoot from filename
-    var sourceRootRegEx = new RegExp("^" + opts.sourceRoot + "\/?");
-    filenameRelative = filenameRelative.replace(sourceRootRegEx, "");
-  }
-
-  // remove extension
-  filenameRelative = filenameRelative.replace(/\.(.*?)$/, "");
-
-  moduleName += filenameRelative;
-
-  return moduleName;
 };
 
 AMDFormatter.prototype._push = function (node) {

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

@@ -4,8 +4,9 @@ var CommonJSFormatter = require("./common");
 var util              = require("../../util");
 var t                 = require("../../types");
 
-function CommonJSInteropFormatter(file) {
-  this.file = file;
+function CommonJSInteropFormatter() {
+  this.has = false;
+  CommonJSFormatter.apply(this, arguments);
 }
 
 util.inherits(CommonJSInteropFormatter, CommonJSFormatter);
@@ -26,3 +27,27 @@ CommonJSInteropFormatter.prototype.importSpecifier = function (specifier, node,
     CommonJSFormatter.prototype.importSpecifier.apply(this, arguments);
   }
 };
+
+CommonJSInteropFormatter.prototype.export = function (node, nodes) {
+  if (node.default && !this.has) {
+    var declar = node.declaration;
+
+    // module.exports = VALUE;
+    var assign = util.template("exports-default-module", {
+      VALUE: this._pushStatement(declar, nodes)
+    }, true);
+
+    // hoist to the top if this default is a function
+    nodes.push(this._hoistExport(declar, assign));
+    return;
+  } else {
+    this.has = true;
+  }
+
+  CommonJSFormatter.prototype.export.apply(this, arguments);
+};
+
+CommonJSInteropFormatter.prototype.exportSpecifier = function () {
+  this.has = true;
+  CommonJSFormatter.prototype.exportSpecifier.apply(this, arguments);
+};

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

@@ -7,6 +7,33 @@ function CommonJSFormatter(file) {
   this.file = file;
 }
 
+CommonJSFormatter.prototype.getModuleName = function () {
+  var opts = this.file.opts;
+  var filenameRelative = opts.filenameRelative;
+  var moduleName = "";
+
+  if (opts.moduleRoot) {
+    moduleName = opts.moduleRoot + "/";
+  }
+
+  if (!opts.filenameRelative) {
+    return moduleName + opts.filename.replace(/^\//, "");
+  }
+
+  if (opts.sourceRoot) {
+    // remove sourceRoot from filename
+    var sourceRootRegEx = new RegExp("^" + opts.sourceRoot + "\/?");
+    filenameRelative = filenameRelative.replace(sourceRootRegEx, "");
+  }
+
+  // remove extension
+  filenameRelative = filenameRelative.replace(/\.(.*?)$/, "");
+
+  moduleName += filenameRelative;
+
+  return moduleName;
+};
+
 CommonJSFormatter.prototype.import = function (node, nodes) {
   // import "foo";
   nodes.push(util.template("require", {
@@ -38,23 +65,32 @@ CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes)
   }));
 };
 
+CommonJSFormatter.prototype._hoistExport = function (declar, assign) {
+  if (t.isFunctionDeclaration(declar)) {
+    assign._blockHoist = true;
+  }
+
+  return assign;
+};
+
+CommonJSFormatter.prototype._pushStatement = function (ref, nodes) {
+  if (t.isClass(ref) || t.isFunction(ref)) {
+    if (ref.id) {
+      nodes.push(t.toStatement(ref));
+      ref = ref.id;
+    }
+  }
+  return ref;
+};
+
 CommonJSFormatter.prototype.export = function (node, nodes) {
   var declar = node.declaration;
 
   if (node.default) {
-    var ref = declar;
-
-    if (t.isClass(ref) || t.isFunction(ref)) {
-      if (ref.id) {
-        nodes.push(t.toStatement(ref));
-        ref = ref.id;
-      }
-    }
-
     nodes.push(util.template("exports-default", {
       //inherits: node,
 
-      VALUE: ref
+      VALUE: this._pushStatement(declar, nodes)
     }, true));
   } else {
     var assign;
@@ -83,9 +119,7 @@ CommonJSFormatter.prototype.export = function (node, nodes) {
       nodes.push(t.toStatement(declar));
       nodes.push(assign);
 
-      if (t.isFunctionDeclaration(declar)) {
-        assign._blockHoist = true;
-      }
+      this._hoistExport(declar, assign);
     }
   }
 };
@@ -126,7 +160,7 @@ CommonJSFormatter.prototype._exportSpecifier = function (getRef, specifier, node
 };
 
 CommonJSFormatter.prototype.exportSpecifier = function (specifier, node, nodes) {
-  return this._exportSpecifier(function () {
+  this._exportSpecifier(function () {
     return t.callExpression(t.identifier("require"), [node.source]);
   }, specifier, node, nodes);
 };

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

@@ -0,0 +1,202 @@
+module.exports = SystemFormatter;
+
+var util = require("../../util");
+var t    = require("../../types");
+var _    = require("lodash");
+
+var SETTER_MODULE_NAMESPACE = t.identifier("m");
+var DEFAULT_IDENTIFIER      = t.identifier("default");
+var NULL_SETTER             = t.literal(null);
+
+function SystemFormatter(file) {
+  this.exportedStatements = [];
+  this.importedModule     = {};
+
+  this.exportIdentifier   = file.generateUidIdentifier("export");
+  this.file               = file;
+}
+
+SystemFormatter.prototype.transform = function (ast) {
+  var program = ast.program;
+  var body    = program.body;
+
+  // extract the module name
+  var moduleName = this.file.opts.filename
+    .replace(/^.*\//, "").replace(/\..*$/, "");
+
+  // build an array of module names
+  var dependencies = Object.keys(this.importedModule).map(t.literal);
+
+  // generate the __moduleName variable
+  var moduleNameVariableNode = t.variableDeclaration("var", [
+    t.variableDeclarator(
+      t.identifier("__moduleName"),
+      t.literal(moduleName)
+    )
+  ]);
+  body.splice(1, 0, moduleNameVariableNode);
+
+  // generate an array of import variables
+
+  var declaredSetters = _(this.importedModule)
+    .map()
+    .flatten()
+    .pluck("variableName")
+    .pluck("name")
+    .uniq()
+    .map(t.identifier)
+    .map(function (name) {
+      return t.variableDeclarator(name);
+    })
+    .value();
+
+  if (declaredSetters.length) {
+    body.splice(2, 0, t.variableDeclaration("var", declaredSetters));
+  }
+
+  // generate the execute function expression
+  var executeFunctionExpression = t.functionExpression(
+    null, [], t.blockStatement(this.exportedStatements)
+  );
+
+  // generate the execute function expression
+  var settersArrayExpression = t.arrayExpression(this._buildSetters());
+
+  // generate the return statement
+  var moduleReturnStatement = t.returnStatement(t.objectExpression([
+    t.property("init", t.identifier("setters"), settersArrayExpression),
+    t.property("init", t.identifier("execute"), executeFunctionExpression)
+  ]));
+  body.push(moduleReturnStatement);
+
+  // runner
+  var runner = util.template("register", {
+    MODULE_NAME: t.literal(moduleName),
+    MODULE_DEPENDENCIES: t.arrayExpression(dependencies),
+    MODULE_BODY: t.functionExpression(
+      null,
+      [this.exportIdentifier],
+      t.blockStatement(body)
+    )
+  });
+
+  program.body = [t.expressionStatement(runner)];
+};
+
+SystemFormatter.prototype._buildSetters = function () {
+  // generate setters array expression elements
+  return _.map(this.importedModule, function (specs) {
+    if (!specs.length) {
+      return NULL_SETTER;
+    }
+
+    var expressionStatements = _.map(specs, function (spec) {
+      var right = SETTER_MODULE_NAMESPACE;
+      if (!spec.isBatch) {
+        right = t.memberExpression(right, spec.key);
+      }
+
+      return t.expressionStatement(
+        t.assignmentExpression("=", spec.variableName, right
+        )
+      );
+    });
+
+    return t.functionExpression(
+      null, [SETTER_MODULE_NAMESPACE], t.blockStatement(expressionStatements)
+    );
+  });
+};
+
+SystemFormatter.prototype.import = function (node) {
+  var MODULE_NAME = node.source.value;
+  this.importedModule[MODULE_NAME] = this.importedModule[MODULE_NAME] || [];
+};
+
+SystemFormatter.prototype.importSpecifier = function (specifier, node) {
+  var variableName = t.getSpecifierName(specifier);
+
+  // import foo from "foo";
+  if (specifier.default) {
+    specifier.id = DEFAULT_IDENTIFIER;
+  }
+
+  var MODULE_NAME = node.source.value;
+
+  this.importedModule[MODULE_NAME] = this.importedModule[MODULE_NAME] || [];
+
+  this.importedModule[MODULE_NAME].push({
+    variableName: variableName,
+    isBatch:      specifier.type === "ImportBatchSpecifier",
+    key:          specifier.id
+  });
+};
+
+SystemFormatter.prototype._export = function (name, identifier) {
+  this.exportedStatements.push(t.expressionStatement(
+    t.callExpression(this.exportIdentifier, [t.literal(name), identifier])
+  ));
+};
+
+SystemFormatter.prototype.export = function (node, nodes) {
+  var declar = node.declaration;
+  var variableName, identifier;
+
+  if (node.default) {
+    // export default foo
+    variableName = DEFAULT_IDENTIFIER.name;
+    if (t.isClass(declar) || t.isFunction(declar)) {
+      if (!declar.id) {
+        declar.id = this.file.generateUidIdentifier("anonymous");
+      }
+
+      nodes.push(t.toStatement(declar));
+      declar = declar.id;
+    }
+
+    identifier = declar;
+  } else if (t.isVariableDeclaration(declar)) {
+    // export var foo
+    variableName = declar.declarations[0].id.name;
+    identifier = declar.declarations[0].id;
+
+    nodes.push(declar);
+  } else {
+    // export function foo () {}
+    variableName = declar.id.name;
+    identifier = declar.id;
+
+    nodes.push(declar);
+  }
+
+  this._export(variableName, identifier);
+};
+
+SystemFormatter.prototype.exportSpecifier = function (specifier, node) {
+  var variableName = t.getSpecifierName(specifier);
+
+  if (node.source) {
+    if (t.isExportBatchSpecifier(specifier)) {
+      // export * from "foo";
+      var exportIdentifier = t.identifier("exports");
+      this.exportedStatements.push(
+        t.variableDeclaration("var", [
+          t.variableDeclarator(exportIdentifier, this.exportIdentifier)
+        ])
+      );
+
+      this.exportedStatements.push(util.template("exports-wildcard", {
+        OBJECT: t.identifier(node.source.value)
+      }, true));
+    } else {
+      // export { foo } from "test";
+      this._export(variableName.name, t.memberExpression(
+        t.identifier(node.source.value),
+        specifier.id
+      ));
+    }
+  } else {
+    // export { foo };
+    this._export(variableName.name, specifier.id);
+  }
+};

lib/6to5/transformation/transform.js

@@ -22,6 +22,7 @@ transform.transformers = {};
 transform.moduleFormatters = {
   common:        require("./modules/common"),
   commonInterop: require("./modules/common-interop"),
+  system:        require("./modules/system"),
   ignore:        require("./modules/ignore"),
   amd:           require("./modules/amd"),
   umd:           require("./modules/umd")

lib/6to5/transformation/transformers/_alias-functions.js

@@ -31,7 +31,7 @@ var go = function (getBody, node, file, scope) {
         return false;
       }
 
-      if (node._ignoreAliasFunctions) return;
+      if (node._ignoreAliasFunctions) return false;
 
       var getId;
 

lib/6to5/transformation/transformers/es6-generators/visit.js

@@ -56,7 +56,7 @@ var visitor = function (path, file) {
   );
 
   var innerFnId = t.identifier(node.id.name + "$");
-  var contextId = file.generateUidIdentifier("context$", scope);
+  var contextId = file.generateUidIdentifier("context", scope);
   var vars = hoist(path);
 
   var emitter = new Emitter(contextId);

lib/6to5/transformation/transformers/es6-modules.js

@@ -5,10 +5,10 @@ exports.ImportDeclaration = function (node, parent, file) {
 
   if (node.specifiers.length) {
     _.each(node.specifiers, function (specifier) {
-      file.moduleFormatter.importSpecifier(specifier, node, nodes);
+      file.moduleFormatter.importSpecifier(specifier, node, nodes, parent);
     });
   } else {
-    file.moduleFormatter.import(node, nodes);
+    file.moduleFormatter.import(node, nodes, parent);
   }
 
   return nodes;
@@ -18,10 +18,10 @@ exports.ExportDeclaration = function (node, parent, file) {
   var nodes = [];
 
   if (node.declaration) {
-    file.moduleFormatter.export(node, nodes);
+    file.moduleFormatter.export(node, nodes, parent);
   } else {
     _.each(node.specifiers, function (specifier) {
-      file.moduleFormatter.exportSpecifier(specifier, node, nodes);
+      file.moduleFormatter.exportSpecifier(specifier, node, nodes, parent);
     });
   }
 

lib/6to5/transformation/transformers/es7-abstract-references.js

@@ -29,7 +29,7 @@ exports.AssignmentExpression = function (node, parent, file, scope) {
   // we need to return `node.right`
   if (!t.isExpressionStatement(parent)) {
     // `node.right` isn't a simple identifier so we need to reference it
-    if (!t.isIdentifier(value)) {
+    if (t.isDynamic(value)) {
       var tempName = file.generateUid("temp");
       temp = value = t.identifier(tempName);
       scope.push(tempName, temp);
@@ -70,7 +70,7 @@ exports.CallExpression = function (node, parent, file, scope) {
   if (!t.isVirtualPropertyExpression(callee)) return;
 
   var temp;
-  if (!t.isIdentifier(callee.object)) {
+  if (t.isDynamic(callee.object)) {
     // we need to save `callee.object` so we can call it again
     var tempName = file.generateUid("temp");
     temp = t.identifier(tempName);

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

@@ -132,6 +132,8 @@ exports.XJSElement = {
           }
         });
 
+        return;
+      } else if (t.isXJSEmptyExpression(child)) {
         return;
       }
 

lib/6to5/traverse/scope.js

@@ -21,15 +21,19 @@ function Scope(block, parent) {
   this.references = this.getReferences();
 }
 
+Scope.add = function (node, references) {
+  if (!node) return;
+  _.merge(references, t.getIds(node, true));
+};
+
 Scope.prototype.getReferences = function () {
   var block = this.block;
   if (block._scopeReferences) return block._scopeReferences;
 
-  var self       = this;
   var references = block._scopeReferences = {};
 
   var add = function (node) {
-    self.add(node, references);
+    Scope.add(node, references);
   };
 
   // ForStatement - left, init
@@ -116,9 +120,8 @@ Scope.prototype.push = function (name, id, init) {
   }
 };
 
-Scope.prototype.add = function (node, references) {
-  if (!node) return;
-  _.merge(references || this.references, t.getIds(node, true));
+Scope.prototype.add = function (node) {
+  Scope.add(node, this.references);
 };
 
 Scope.prototype.get = function (id) {

lib/6to5/types/index.js

@@ -87,6 +87,16 @@ t.shallowEqual = function (actual, expected) {
 
 //
 
+t.isDynamic = function (node) {
+  if (t.isIdentifier(node) || t.isLiteral(node) || t.isThisExpression(node)) {
+    return false;
+  } else if (t.isMemberExpression(node)) {
+    return t.isDynamic(node.object) || t.isDynamic(node.property);
+  } else {
+    return true;
+  }
+};
+
 t.isReferenced = function (node, parent) {
   // we're a property key so we aren't referenced
   if (t.isProperty(parent) && parent.key === node) return false;

lib/6to5/util.js

@@ -38,9 +38,9 @@ exports.list = function (val) {
 };
 
 exports.regexify = function (val) {
-  if (!val) return new RegExp;
+  if (!val) return new RegExp(/.^/);
   if (_.isArray(val)) val = val.join("|");
-  if (_.isString(val)) return new RegExp(val || "");
+  if (_.isString(val)) return new RegExp(val);
   if (_.isRegExp(val)) return val;
   throw new TypeError("illegal type for regexify");
 };

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "1.13.10",
+  "version": "1.13.12",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://github.com/6to5/6to5",
   "repository": {

test/fixtures/transformation/.es6-modules-system/exports-default/actual.js

@@ -0,0 +1,8 @@
+export default 42;
+export default {};
+export default [];
+export default foo;
+export default function () {}
+export default class {}
+export default function foo () {}
+export default class Foo {}

test/fixtures/transformation/.es6-modules-system/exports-default/expected.js

@@ -0,0 +1,32 @@
+System.register("actual", [], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  function _anonymous() {}
+  var _anonymous2;
+
+  function foo() {}
+  var Foo;
+
+  return {
+    setters: [],
+    execute: function () {
+      _export("default", 42);
+
+      _export("default", {});
+
+      _export("default", []);
+
+      _export("default", foo);
+
+      _export("default", _anonymous);
+
+      _export("default", _anonymous2 = function _anonymous2() {});
+
+      _export("default", foo);
+
+      _export("default", Foo = function Foo() {});
+    }
+  };
+});

test/fixtures/transformation/.es6-modules-system/exports-from/actual.js

@@ -0,0 +1,6 @@
+export * from "foo";
+export {foo} from "foo";
+export {foo, bar} from "foo";
+export {foo as bar} from "foo";
+export {foo as default} from "foo";
+export {foo as default, bar} from "foo";

test/fixtures/transformation/.es6-modules-system/exports-from/expected.js

@@ -0,0 +1,34 @@
+System.register("actual", ["foo"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var _localExports = ['foo', 'bar', 'default'];
+
+  return {
+    setters: [
+    function(m) {
+      _export("foo", m.foo);
+
+      _export("foo", m.foo);
+
+      _export("bar", m.bar);
+
+      _export("bar", m.foo);
+
+      _export("default", m.foo);
+
+      _export("default", m.foo);
+
+      _export("bar", m.bar);
+
+      for (var p in m) {
+        if (_localExports.indexOf(i) == -1)
+          _export(p, m[p]);
+      }
+    }
+    ],
+    execute: function () {
+    }
+  };
+});

test/fixtures/transformation/.es6-modules-system/exports-named/actual.js

@@ -0,0 +1,5 @@
+export {foo};
+export {foo, bar};
+export {foo as bar};
+export {foo as default};
+export {foo as default, bar};

test/fixtures/transformation/.es6-modules-system/exports-named/expected.js

@@ -0,0 +1,26 @@
+System.register("actual", [], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  return {
+    setters: [
+    function(m) {
+      _export("foo", m.foo);
+
+      _export("foo", m.foo);
+
+      _export("bar", m.bar);
+
+      _export("bar", m.foo);
+
+      _export("default", m.foo);
+
+      _export("default", m.foo);
+
+      _export("bar", m.bar);
+    }],
+    execute: function () {
+    }
+  };
+});

test/fixtures/transformation/.es6-modules-system/exports-variable/actual.js

@@ -0,0 +1,8 @@
+export var foo = 1;
+export var foo2 = function () {};
+export var foo3;
+export let foo4 = 2;
+export let foo5;
+export const foo6 = 3;
+export function foo7 () {}
+export class foo8 {}

test/fixtures/transformation/.es6-modules-system/exports-variable/expected.js

@@ -0,0 +1,37 @@
+System.register("actual", [], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var foo;
+  var foo2;
+  var foo3;
+  var foo4;
+  var foo5;
+  var foo6;
+  function foo7() {}
+  _export("foo7", foo7);
+
+  var foo8;
+
+  return {
+    setters: [],
+    execute: function () {
+      _export("foo", foo = 1);
+
+      _export("foo2", foo2 = function () {});
+
+      _export("foo3", foo3);
+
+      _export("foo4", foo4 = 2);
+
+      _export("foo5", foo5);
+
+      _export("foo6", foo6 = 3);
+
+      _export("foo7", foo7);
+
+      _export("foo8", foo8 = function foo8() {});
+    }
+  };
+});

test/fixtures/transformation/.es6-modules-system/hoist-function-exports/actual.js

@@ -0,0 +1,11 @@
+import { isEven } from "./evens";
+
+export function nextOdd(n) {
+  return isEven(n) ? n + 1 : n + 2;
+}
+
+export var isOdd = (function (isEven) {
+  return function (n) {
+    return !isEven(n);
+  };
+})(isEven);

test/fixtures/transformation/.es6-modules-system/hoist-function-exports/expected.js

@@ -0,0 +1,25 @@
+System.register("actual", ["./evens"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var isEven;
+  function nextOdd(n) {
+    return isEven(n) ? n + 1 : n + 2;
+  }
+  _export("nextOdd", nextOdd);
+
+  var isOdd;
+  return {
+    setters: [function (m) {
+      isEven = m.isEven;
+    }],
+    execute: function () {
+      _export("isOdd", isOdd = (function (isEven) {
+        return function (n) {
+          return !isEven(n);
+        };
+      })(isEven));
+    }
+  };
+});

test/fixtures/transformation/.es6-modules-system/imports-default/actual.js

@@ -0,0 +1,2 @@
+import foo from "foo";
+import {default as foo} from "foo";

test/fixtures/transformation/.es6-modules-system/imports-default/expected.js

@@ -0,0 +1,14 @@
+System.register("actual", ["foo"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var foo;
+  return {
+    setters: [function (m) {
+      foo = m.default;
+      foo = m.default;
+    }],
+    execute: function () {}
+  };
+});

test/fixtures/transformation/.es6-modules-system/imports-glob/actual.js

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

test/fixtures/transformation/.es6-modules-system/imports-glob/expected.js

@@ -0,0 +1,13 @@
+System.register("actual", ["foo"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var foo;
+  return {
+    setters: [function (m) {
+      foo = m;
+    }],
+    execute: function () {}
+  };
+});

test/fixtures/transformation/.es6-modules-system/imports-mixing/actual.js

@@ -0,0 +1 @@
+import foo, {baz as xyz} from "foo";

test/fixtures/transformation/.es6-modules-system/imports-mixing/expected.js

@@ -0,0 +1,14 @@
+System.register("actual", ["foo"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var foo, xyz;
+  return {
+    setters: [function (m) {
+      foo = m.default;
+      xyz = m.baz;
+    }],
+    execute: function () {}
+  };
+});

test/fixtures/transformation/.es6-modules-system/imports-named/actual.js

@@ -0,0 +1,4 @@
+import {bar} from "foo";
+import {bar, baz} from "foo";
+import {bar as baz} from "foo";
+import {bar as baz, xyz} from "foo";

test/fixtures/transformation/.es6-modules-system/imports-named/expected.js

@@ -0,0 +1,18 @@
+System.register("actual", ["foo"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var bar, baz, xyz;
+  return {
+    setters: [function (m) {
+      bar = m.bar;
+      bar = m.bar;
+      baz = m.baz;
+      baz = m.bar;
+      baz = m.bar;
+      xyz = m.xyz;
+    }],
+    execute: function () {}
+  };
+});

test/fixtures/transformation/.es6-modules-system/imports/actual.js

@@ -0,0 +1,3 @@
+import "foo";
+import "foo-bar";
+import "./directory/foo-bar";

test/fixtures/transformation/.es6-modules-system/imports/expected.js

@@ -0,0 +1,10 @@
+System.register("actual", ["foo", "foo-bar", "./directory/foo-bar"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  return {
+    setters: [null, null, null],
+    execute: function () {}
+  };
+});

test/fixtures/transformation/.es6-modules-system/options.json

@@ -0,0 +1,3 @@
+{
+  "modules": "system"
+}

test/fixtures/transformation/.es6-modules-system/overview/actual.js

@@ -0,0 +1,12 @@
+import "foo";
+import "foo-bar";
+import "./directory/foo-bar";
+import foo from "foo";
+import * as foo from "foo";
+import {bar} from "foo";
+import {foo as bar} from "foo";
+
+export {test};
+export var test = 5;
+
+export default test;

test/fixtures/transformation/.es6-modules-system/overview/expected.js

@@ -0,0 +1,24 @@
+System.register("actual", ["foo", "foo-bar", "./directory/foo-bar"], function (_export) {
+  "use strict";
+
+  var __moduleName = "actual";
+
+  var foo, bar;
+  var test;
+
+  return {
+    setters: [function (m) {
+      foo = m.default;
+      foo = m;
+      bar = m.bar;
+      bar = m.foo;
+    }, null, null],
+    execute: function () {
+      _export("test", test);
+
+      _export("test", test = 5);
+
+      _export("default", test);
+    }
+  };
+});

test/fixtures/transformation/es6-modules-common-interop/exports-default/expected.js

@@ -1,13 +1,13 @@
 "use strict";
 
-exports["default"] = 42;
-exports["default"] = {};
-exports["default"] = [];
-exports["default"] = foo;
-exports["default"] = function () {};
-exports["default"] = function () {};
+module.exports = foo;
+module.exports = 42;
+module.exports = {};
+module.exports = [];
+module.exports = foo;
+module.exports = function () {};
+module.exports = function () {};
 function foo() {}
-exports["default"] = foo;
 var Foo = function Foo() {};
 
-exports["default"] = Foo;
+module.exports = Foo;

test/fixtures/transformation/es6-rest-parameters/arrow-functions/expected.js

@@ -1,6 +1,5 @@
 "use strict";
 
-var _arguments = arguments;
 var _argumentsToArray = function (args) {
   var target = new Array(args.length);
   for (var i = 0; i < args.length; i++) {
@@ -11,5 +10,5 @@ var _argumentsToArray = function (args) {
 };
 
 var concat = function () {
-  var arrs = _argumentsToArray(_arguments);
+  var arrs = _argumentsToArray(arguments);
 };

test/util.js

@@ -58,10 +58,10 @@ suite("util", function () {
   });
 
   test("regexify", function () {
-    assert.deepEqual(util.regexify(undefined), /(?:)/);
-    assert.deepEqual(util.regexify(false), /(?:)/);
-    assert.deepEqual(util.regexify(null), /(?:)/);
-    assert.deepEqual(util.regexify(""), /(?:)/);
+    assert.deepEqual(util.regexify(undefined), /.^/);
+    assert.deepEqual(util.regexify(false), /.^/);
+    assert.deepEqual(util.regexify(null), /.^/);
+    assert.deepEqual(util.regexify(""), /.^/);
     assert.deepEqual(util.regexify(["foo", "bar"]), /foo|bar/);
     assert.deepEqual(util.regexify("foobar"), /foobar/);
     assert.deepEqual(util.regexify(/foobar/), /foobar/);
@@ -82,6 +82,8 @@ suite("util", function () {
     assert.equal(t.toIdentifier("swag-lord"), "swagLord");
   });
 
+  test("isDynamic");
+
   test("isReferenced");
 
   test("removeProperties");