improve module loading interoperability for babel

src/compiler/emitter.ts

@@ -2709,6 +2709,17 @@ var __param = (this && this.__param) || function (paramIndex, decorator) {
                     }
                     else {
                         if (node.flags & NodeFlags.Default) {
+                            if (compilerOptions.module === ModuleKind.CommonJS || compilerOptions.module === ModuleKind.AMD || compilerOptions.module === ModuleKind.UMD) {
+                                write("Object.defineProperty(exports, \"__esModule\", {");
+                                writeLine();
+                                increaseIndent();
+                                // default value of configurable, enumerable, writable are `false`. 
+                                write("value: true");
+                                writeLine();
+                                decreaseIndent();
+                                write("};");
+                                writeLine();
+                            }
                             if (languageVersion === ScriptTarget.ES3) {
                                 write("exports[\"default\"]");
                             } else {

tests/baselines/reference/es5-commonjs.js

@@ -0,0 +1,29 @@
+//// [es5-commonjs.ts]
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}
+
+
+//// [es5-commonjs.js]
+var A = (function () {
+    function A() {
+    }
+    A.prototype.B = function () {
+        return 42;
+    };
+    return A;
+})();
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
+exports.default = A;

tests/baselines/reference/es5-commonjs.symbols

@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es5-commonjs.ts ===
+
+export default class A
+>A : Symbol(A, Decl(es5-commonjs.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es5-commonjs.ts, 6, 5))
+    {
+        return 42;
+    }
+}
+

tests/baselines/reference/es5-commonjs.types

@@ -0,0 +1,18 @@
+=== tests/cases/compiler/es5-commonjs.ts ===
+
+export default class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
+

tests/baselines/reference/es5-system.js

@@ -0,0 +1,34 @@
+//// [es5-system.ts]
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}
+
+
+//// [es5-system.js]
+System.register([], function(exports_1) {
+    var A;
+    return {
+        setters:[],
+        execute: function() {
+            A = (function () {
+                function A() {
+                }
+                A.prototype.B = function () {
+                    return 42;
+                };
+                return A;
+            })();
+            exports_1("default", A);
+        }
+    }
+});

tests/baselines/reference/es5-system.symbols

@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es5-system.ts ===
+
+export default class A
+>A : Symbol(A, Decl(es5-system.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es5-system.ts, 6, 5))
+    {
+        return 42;
+    }
+}
+

tests/baselines/reference/es5-system.types

@@ -0,0 +1,18 @@
+=== tests/cases/compiler/es5-system.ts ===
+
+export default class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
+

tests/baselines/reference/es5-umd3.js

@@ -31,5 +31,8 @@ export default class A
         };
         return A;
     })();
+    Object.defineProperty(exports, "__esModule", {
+        value: true
+    };
     exports.default = A;
 });

tests/baselines/reference/es5ExportDefaultClassDeclaration.js

@@ -12,6 +12,9 @@ var C = (function () {
     C.prototype.method = function () { };
     return C;
 })();
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = C;
 
 

tests/baselines/reference/es5ExportDefaultClassDeclaration2.js

@@ -12,6 +12,9 @@ var default_1 = (function () {
     default_1.prototype.method = function () { };
     return default_1;
 })();
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = default_1;
 
 

tests/baselines/reference/es5ExportDefaultClassDeclaration3.js

@@ -24,6 +24,9 @@ var C = (function () {
     };
     return C;
 })();
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = C;
 var after = new C();
 var t = C;

tests/baselines/reference/es5ExportDefaultFunctionDeclaration.js

@@ -5,6 +5,9 @@ export default function f() { }
 
 //// [es5ExportDefaultFunctionDeclaration.js]
 function f() { }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = f;
 
 

tests/baselines/reference/es5ExportDefaultFunctionDeclaration2.js

@@ -5,6 +5,9 @@ export default function () { }
 
 //// [es5ExportDefaultFunctionDeclaration2.js]
 function default_1() { }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = default_1;
 
 

tests/baselines/reference/es5ExportDefaultFunctionDeclaration3.js

@@ -13,6 +13,9 @@ var before = func();
 function func() {
     return func;
 }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = func;
 var after = func();
 

tests/baselines/reference/exportAndImport-es3-amd.js

@@ -16,12 +16,18 @@ export default function f2() {
 define(["require", "exports"], function (require, exports) {
     function f1() {
     }
+    Object.defineProperty(exports, "__esModule", {
+        value: true
+    };
     exports["default"] = f1;
 });
 //// [m2.js]
 define(["require", "exports", "./m1"], function (require, exports, m1_1) {
     function f2() {
         m1_1["default"]();
     }
+    Object.defineProperty(exports, "__esModule", {
+        value: true
+    };
     exports["default"] = f2;
 });

tests/baselines/reference/exportAndImport-es3.js

@@ -15,10 +15,16 @@ export default function f2() {
 //// [m1.js]
 function f1() {
 }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports["default"] = f1;
 //// [m2.js]
 var m1_1 = require("./m1");
 function f2() {
     m1_1["default"]();
 }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports["default"] = f2;

tests/baselines/reference/exportAndImport-es5-amd.js

@@ -16,12 +16,18 @@ export default function f2() {
 define(["require", "exports"], function (require, exports) {
     function f1() {
     }
+    Object.defineProperty(exports, "__esModule", {
+        value: true
+    };
     exports.default = f1;
 });
 //// [m2.js]
 define(["require", "exports", "./m1"], function (require, exports, m1_1) {
     function f2() {
         m1_1.default();
     }
+    Object.defineProperty(exports, "__esModule", {
+        value: true
+    };
     exports.default = f2;
 });

tests/baselines/reference/exportAndImport-es5.js

@@ -15,10 +15,16 @@ export default function f2() {
 //// [m1.js]
 function f1() {
 }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = f1;
 //// [m2.js]
 var m1_1 = require("./m1");
 function f2() {
     m1_1.default();
 }
+Object.defineProperty(exports, "__esModule", {
+    value: true
+};
 exports.default = f2;

tests/cases/compiler/es5-commonjs.ts

@@ -0,0 +1,17 @@
+// @target: ES5
+// @sourcemap: false
+// @declaration: false
+// @module: commonjs
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}

tests/cases/compiler/es5-system.ts

@@ -0,0 +1,17 @@
+// @target: ES5
+// @sourcemap: false
+// @declaration: false
+// @module: system
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}