Add additional support for loose mode in helper-module-transforms (#6742)

packages/babel-helper-module-transforms/src/index.js

@@ -61,7 +61,7 @@ export function rewriteModuleStatementsAndPrepareHeader(
   }
 
   // Create all of the statically known named exports.
-  headers.push(...buildExportInitializationStatements(path, meta));
+  headers.push(...buildExportInitializationStatements(path, meta, loose));
 
   return { meta, headers };
 }
@@ -111,6 +111,7 @@ export function wrapInterop(
 export function buildNamespaceInitStatements(
   metadata: ModuleMetadata,
   sourceMetadata: SourceModuleMetadata,
+  loose: boolean = false,
 ) {
   const statements = [];
 
@@ -136,7 +137,11 @@ export function buildNamespaceInitStatements(
     );
   }
   if (sourceMetadata.reexportAll) {
-    const statement = buildNamespaceReexport(metadata, sourceMetadata.name);
+    const statement = buildNamespaceReexport(
+      metadata,
+      sourceMetadata.name,
+      loose,
+    );
     statement.loc = sourceMetadata.reexportAll.loc;
 
     // Iterate props creating getter for each prop.
@@ -166,26 +171,35 @@ function buildESModuleHeader(
 /**
  * Create a re-export initialization loop for a specific imported namespace.
  */
-function buildNamespaceReexport(metadata, namespace) {
-  return template.statement`
-    Object.keys(NAMESPACE).forEach(function(key) {
-      if (key === "default" || key === "__esModule") return;
-      VERIFY_NAME_LIST;
+function buildNamespaceReexport(metadata, namespace, loose) {
+  return (loose
+    ? template.statement`
+        Object.keys(NAMESPACE).forEach(function(key) {
+          if (key === "default" || key === "__esModule") return;
+          VERIFY_NAME_LIST;
 
-      Object.defineProperty(EXPORTS, key, {
-        enumerable: true,
-        get: function() {
-          return NAMESPACE[key];
-        },
-      });
-    });
-  `({
+          EXPORTS[key] = NAMESPACE[key];
+        });
+      `
+    : template.statement`
+        Object.keys(NAMESPACE).forEach(function(key) {
+          if (key === "default" || key === "__esModule") return;
+          VERIFY_NAME_LIST;
+
+          Object.defineProperty(EXPORTS, key, {
+            enumerable: true,
+            get: function() {
+              return NAMESPACE[key];
+            },
+          });
+        });
+    `)({
     NAMESPACE: namespace,
     EXPORTS: metadata.exportName,
     VERIFY_NAME_LIST: metadata.exportNameListName
       ? template`
-          if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
-        `({ EXPORTS_LIST: metadata.exportNameListName })
+            if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
+          `({ EXPORTS_LIST: metadata.exportNameListName })
       : null,
   });
 }
@@ -239,6 +253,7 @@ function buildExportNameListDeclaration(
 function buildExportInitializationStatements(
   programPath: NodePath,
   metadata: ModuleMetadata,
+  loose: boolean = false,
 ) {
   const initStatements = [];
 
@@ -257,14 +272,16 @@ function buildExportInitializationStatements(
   for (const data of metadata.source.values()) {
     for (const [exportName, importName] of data.reexports) {
       initStatements.push(
-        template`
-          Object.defineProperty(EXPORTS, "EXPORT_NAME", {
-            enumerable: true,
-            get: function() {
-              return NAMESPACE.IMPORT_NAME;
-            },
-          });
-        `({
+        (loose
+          ? template.statement`EXPORTS.EXPORT_NAME = NAMESPACE.IMPORT_NAME;`
+          : template`
+            Object.defineProperty(EXPORTS, "EXPORT_NAME", {
+              enumerable: true,
+              get: function() {
+                return NAMESPACE.IMPORT_NAME;
+              },
+            });
+          `)({
           EXPORTS: metadata.exportName,
           EXPORT_NAME: exportName,
           NAMESPACE: data.name,

packages/babel-plugin-transform-modules-amd/src/index.js

@@ -68,7 +68,9 @@ export default function({ types: t }, options) {
               }
             }
 
-            headers.push(...buildNamespaceInitStatements(meta, metadata));
+            headers.push(
+              ...buildNamespaceInitStatements(meta, metadata, loose),
+            );
           }
 
           ensureStatementsHoisted(headers);

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-10/actual.js

@@ -0,0 +1 @@
+export default (function(){return "foo"})();

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-10/expected.js

@@ -0,0 +1,12 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+
+  var _default = function () {
+    return "foo";
+  }();
+
+  _exports.default = _default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-2/actual.js

@@ -0,0 +1 @@
+export default {};

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-2/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var _default = {};
+  _exports.default = _default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-3/actual.js

@@ -0,0 +1 @@
+export default [];

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-3/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var _default = [];
+  _exports.default = _default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-4/actual.js

@@ -0,0 +1 @@
+export default foo;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-4/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var _default = foo;
+  _exports.default = _default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-5/actual.js

@@ -0,0 +1 @@
+export default function () {}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-5/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = _default;
+
+  function _default() {}
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-6/actual.js

@@ -0,0 +1 @@
+export default class {}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-6/expected.js

@@ -0,0 +1,10 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+
+  class _default {}
+
+  _exports.default = _default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-7/actual.js

@@ -0,0 +1 @@
+export default function foo () {}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-7/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = foo;
+
+  function foo() {}
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-8/actual.js

@@ -0,0 +1 @@
+export default class Foo {}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-8/expected.js

@@ -0,0 +1,10 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+
+  class Foo {}
+
+  _exports.default = Foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-9/actual.js

@@ -0,0 +1,2 @@
+var foo;
+export { foo as default };

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default-9/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var foo;
+  _exports.default = foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default/actual.js

@@ -0,0 +1 @@
+export default 42;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-default/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var _default = 42;
+  _exports.default = _default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-2/actual.js

@@ -0,0 +1 @@
+export {foo} from "foo";

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-2/expected.js

@@ -0,0 +1,6 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.foo = _foo.foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-3/actual.js

@@ -0,0 +1 @@
+export {foo, bar} from "foo";

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-3/expected.js

@@ -0,0 +1,7 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.foo = _foo.foo;
+  _exports.bar = _foo.bar;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-4/actual.js

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

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-4/expected.js

@@ -0,0 +1,6 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.bar = _foo.foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-5/actual.js

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

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-5/expected.js

@@ -0,0 +1,6 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = _foo.foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-6/actual.js

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

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from-6/expected.js

@@ -0,0 +1,7 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = _foo.foo;
+  _exports.bar = _foo.bar;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from/actual.js

@@ -0,0 +1 @@
+export * from "foo";

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-from/expected.js

@@ -0,0 +1,9 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  Object.keys(_foo).forEach(function (key) {
+    if (key === "default" || key === "__esModule") return;
+    _exports[key] = _foo[key];
+  });
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-2/actual.js

@@ -0,0 +1,2 @@
+var foo, bar;
+export {foo, bar};

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-2/expected.js

@@ -0,0 +1,9 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.bar = _exports.foo = void 0;
+  var foo, bar;
+  _exports.bar = bar;
+  _exports.foo = foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-3/actual.js

@@ -0,0 +1,2 @@
+var foo;
+export {foo as bar};

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-3/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.bar = void 0;
+  var foo;
+  _exports.bar = foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-4/actual.js

@@ -0,0 +1,2 @@
+var foo;
+export {foo as default};

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-4/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var foo;
+  _exports.default = foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-5/actual.js

@@ -0,0 +1,2 @@
+var foo, bar;
+export {foo as default, bar};

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named-5/expected.js

@@ -0,0 +1,9 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.bar = _exports.default = void 0;
+  var foo, bar;
+  _exports.bar = bar;
+  _exports.default = foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named/actual.js

@@ -0,0 +1,2 @@
+var foo;
+export {foo};

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-named/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.foo = void 0;
+  var foo;
+  _exports.foo = foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-specifier-default/actual.js

@@ -0,0 +1,2 @@
+var a = 1;
+export { a as default };

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/export-specifier-default/expected.js

@@ -0,0 +1,8 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = void 0;
+  var a = 1;
+  _exports.default = a;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/exports-variable/actual.js

@@ -0,0 +1,9 @@
+export var foo = 1;
+export var foo2 = 1, bar = 2;
+export var foo3 = function () {};
+export var foo4;
+export let foo5 = 2;
+export let foo6;
+export const foo7 = 3;
+export function foo8 () {}
+export class foo9 {}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/exports-variable/expected.js

@@ -0,0 +1,31 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.foo8 = foo8;
+  _exports.foo9 = _exports.foo7 = _exports.foo6 = _exports.foo5 = _exports.foo4 = _exports.foo3 = _exports.bar = _exports.foo2 = _exports.foo = void 0;
+  var foo = 1;
+  _exports.foo = foo;
+  var foo2 = 1,
+      bar = 2;
+  _exports.bar = bar;
+  _exports.foo2 = foo2;
+
+  var foo3 = function () {};
+
+  _exports.foo3 = foo3;
+  var foo4;
+  _exports.foo4 = foo4;
+  let foo5 = 2;
+  _exports.foo5 = foo5;
+  let foo6;
+  _exports.foo6 = foo6;
+  const foo7 = 3;
+  _exports.foo7 = foo7;
+
+  function foo8() {}
+
+  class foo9 {}
+
+  _exports.foo9 = foo9;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/get-module-name-option/expected.js

@@ -0,0 +1,3 @@
+define("my custom module name", [], function () {
+  "use strict";
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/get-module-name-option/options.json

@@ -0,0 +1,8 @@
+{
+  "moduleIds": true,
+  "moduleId": "my custom module name",
+  "plugins": [
+    "external-helpers",
+    ["transform-modules-amd", { "loose": true }]
+  ]
+}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/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);

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/hoist-function-exports/expected.js

@@ -0,0 +1,19 @@
+define(["exports", "./evens"], function (_exports, _evens) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.nextOdd = nextOdd;
+  _exports.isOdd = void 0;
+
+  function nextOdd(n) {
+    return (0, _evens.isEven)(n) ? n + 1 : n + 2;
+  }
+
+  var isOdd = function (isEven) {
+    return function (n) {
+      return !isEven(n);
+    };
+  }(_evens.isEven);
+
+  _exports.isOdd = isOdd;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/import-order/actual.js

@@ -0,0 +1,4 @@
+import './foo';
+import bar from './bar';
+import './derp';
+import { qux } from './qux';

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/import-order/expected.js

@@ -0,0 +1,5 @@
+define(["./foo", "./bar", "./derp", "./qux"], function (_foo, _bar, _derp, _qux) {
+  "use strict";
+
+  _bar = babelHelpers.interopRequireDefault(_bar);
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-default/actual.js

@@ -0,0 +1,5 @@
+import foo from "foo";
+import {default as foo2} from "foo";
+
+foo;
+foo2;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-default/expected.js

@@ -0,0 +1,7 @@
+define(["foo"], function (_foo) {
+  "use strict";
+
+  _foo = babelHelpers.interopRequireDefault(_foo);
+  _foo.default;
+  _foo.default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-glob/actual.js

@@ -0,0 +1,3 @@
+import * as foo from "foo";
+
+foo;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-glob/expected.js

@@ -0,0 +1,6 @@
+define(["foo"], function (foo) {
+  "use strict";
+
+  foo = babelHelpers.interopRequireWildcard(foo);
+  foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-mixing/actual.js

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

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-mixing/expected.js

@@ -0,0 +1,7 @@
+define(["foo"], function (_foo) {
+  "use strict";
+
+  _foo = babelHelpers.interopRequireWildcard(_foo);
+  _foo.default;
+  _foo.baz;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-named/actual.js

@@ -0,0 +1,11 @@
+import {bar} from "foo";
+import {bar2, baz} from "foo";
+import {bar as baz2} from "foo";
+import {bar as baz3, xyz} from "foo";
+
+bar;
+bar2;
+baz;
+baz2;
+baz3;
+xyz;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports-named/expected.js

@@ -0,0 +1,10 @@
+define(["foo"], function (_foo) {
+  "use strict";
+
+  _foo.bar;
+  _foo.bar2;
+  _foo.baz;
+  _foo.bar;
+  _foo.bar;
+  _foo.xyz;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports/actual.js

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

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/imports/expected.js

@@ -0,0 +1,3 @@
+define(["foo", "foo-bar", "./directory/foo-bar"], function (_foo, _fooBar, _fooBar2) {
+  "use strict";
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/module-name/actual.js

@@ -0,0 +1 @@
+foobar();

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/module-name/expected.js

@@ -0,0 +1,5 @@
+define("loose/module-name/expected", [], function () {
+  "use strict";
+
+  foobar();
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/module-name/options.json

@@ -0,0 +1,7 @@
+{
+  "moduleIds": true,
+  "plugins": [
+    "external-helpers",
+    ["transform-modules-amd", { "loose": true }]
+  ]
+}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/noInterop-export-from/actual.js

@@ -0,0 +1 @@
+export { default } from 'foo';

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/noInterop-export-from/expected.js

@@ -0,0 +1,6 @@
+define(["exports", "foo"], function (_exports, _foo) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = _foo.default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/noInterop-export-from/options.json

@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "external-helpers",
+    ["transform-modules-amd", {
+      "loose": true,
+      "noInterop": true
+    }]
+  ]
+}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/noInterop-import-default-only/actual.js

@@ -0,0 +1,3 @@
+import foo from "foo";
+
+foo;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/noInterop-import-default-only/expected.js

@@ -0,0 +1,5 @@
+define(["foo"], function (_foo) {
+  "use strict";
+
+  _foo.default;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/noInterop-import-default-only/options.json

@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "external-helpers",
+    ["transform-modules-amd", {
+      "loose": true,
+      "noInterop": true
+    }]
+  ]
+}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/options.json

@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "external-helpers",
+    ["transform-modules-amd", { "loose": true }]
+  ]
+}

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/overview/actual.js

@@ -0,0 +1,18 @@
+import "foo";
+import "foo-bar";
+import "./directory/foo-bar";
+import foo from "foo";
+import * as foo2 from "foo";
+import {bar} from "foo";
+import {foo as bar2} from "foo";
+
+var test;
+export {test};
+export var test2 = 5;
+
+export default test;
+
+foo;
+foo2;
+bar;
+bar2;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/overview/expected.js

@@ -0,0 +1,17 @@
+define(["exports", "foo", "foo-bar", "./directory/foo-bar"], function (_exports, foo2, _fooBar, _fooBar2) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.default = _exports.test2 = _exports.test = void 0;
+  foo2 = babelHelpers.interopRequireWildcard(foo2);
+  var test;
+  _exports.test = test;
+  var test2 = 5;
+  _exports.test2 = test2;
+  var _default = test;
+  _exports.default = _default;
+  foo2.default;
+  foo2;
+  foo2.bar;
+  foo2.foo;
+});

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/remap/actual.js

@@ -0,0 +1,21 @@
+export var test = 2;
+test = 5;
+test++;
+
+(function () {
+  var test = 2;
+  test = 3;
+  test++;
+})();
+
+var a = 2;
+export { a };
+a = 3;
+
+var b = 2;
+export { b as c };
+b = 3;
+
+var d = 3;
+export { d as e, d as f };
+d = 4;

packages/babel-plugin-transform-modules-amd/test/fixtures/loose/remap/expected.js

@@ -0,0 +1,26 @@
+define(["exports"], function (_exports) {
+  "use strict";
+
+  _exports.__esModule = true;
+  _exports.f = _exports.e = _exports.c = _exports.a = _exports.test = void 0;
+  var test = 2;
+  _exports.test = test;
+  _exports.test = test = 5;
+  _exports.test = test = test + 1;
+
+  (function () {
+    var test = 2;
+    test = 3;
+    test++;
+  })();
+
+  var a = 2;
+  _exports.a = a;
+  _exports.a = a = 3;
+  var b = 2;
+  _exports.c = b;
+  _exports.c = b = 3;
+  var d = 3;
+  _exports.f = _exports.e = d;
+  _exports.f = _exports.e = d = 4;
+});

packages/babel-plugin-transform-modules-commonjs/src/index.js

@@ -144,7 +144,9 @@ export default function({ types: t, template }, options) {
             header.loc = metadata.loc;
 
             headers.push(header);
-            headers.push(...buildNamespaceInitStatements(meta, metadata));
+            headers.push(
+              ...buildNamespaceInitStatements(meta, metadata, loose),
+            );
           }
 
           ensureStatementsHoisted(headers);

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-10/actual.js

@@ -0,0 +1 @@
+export default (function(){return "foo"})();

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-10/expected.js

@@ -0,0 +1,10 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+
+var _default = function () {
+  return "foo";
+}();
+
+exports.default = _default;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-11/actual.js

@@ -0,0 +1,3 @@
+export default new Cachier()
+
+export function Cachier(databaseName) {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-11/expected.js

@@ -0,0 +1,11 @@
+"use strict";
+
+exports.__esModule = true;
+exports.Cachier = Cachier;
+exports.default = void 0;
+
+var _default = new Cachier();
+
+exports.default = _default;
+
+function Cachier(databaseName) {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-2/actual.js

@@ -0,0 +1 @@
+export default {};

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-2/expected.js

@@ -0,0 +1,6 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _default = {};
+exports.default = _default;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-3/actual.js

@@ -0,0 +1 @@
+export default [];

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-3/expected.js

@@ -0,0 +1,6 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _default = [];
+exports.default = _default;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-4/actual.js

@@ -0,0 +1 @@
+export default foo;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-4/expected.js

@@ -0,0 +1,6 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _default = foo;
+exports.default = _default;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-5/actual.js

@@ -0,0 +1 @@
+export default function () {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-5/expected.js

@@ -0,0 +1,6 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = _default;
+
+function _default() {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-6/actual.js

@@ -0,0 +1 @@
+export default class {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-6/expected.js

@@ -0,0 +1,8 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+
+class _default {}
+
+exports.default = _default;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-7/actual.js

@@ -0,0 +1 @@
+export default function foo () {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-7/expected.js

@@ -0,0 +1,6 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = foo;
+
+function foo() {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-8/actual.js

@@ -0,0 +1 @@
+export default class Foo {}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-8/expected.js

@@ -0,0 +1,8 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+
+class Foo {}
+
+exports.default = Foo;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-9/actual.js

@@ -0,0 +1,3 @@
+var foo;
+export { foo as default };
+

packages/babel-plugin-transform-modules-commonjs/test/fixtures/interop-loose/export-default-9/expected.js

@@ -0,0 +1,6 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var foo;
+exports.default = foo;