diff --git a/src/compiler/transformers/module/module.ts b/src/compiler/transformers/module/module.ts
index 52c6db707c..c1f18e2021 100644
--- a/src/compiler/transformers/module/module.ts
+++ b/src/compiler/transformers/module/module.ts
@@ -55,9 +55,7 @@ namespace ts {
          * @param node The SourceFile node.
          */
         function transformSourceFile(node: SourceFile) {
-            if (isDeclarationFile(node)
-                || !(isExternalModule(node)
-                    || compilerOptions.isolatedModules)) {
+            if (isDeclarationFile(node) || !(isExternalModule(node) || compilerOptions.isolatedModules)) {
                 return node;
             }
 
@@ -74,6 +72,14 @@ namespace ts {
             return aggregateTransformFlags(updated);
         }
 
+
+        function shouldEmitUnderscoreUnderscoreESModule() {
+            if (!currentModuleInfo.exportEquals && isExternalModule(currentSourceFile)) {
+                return true;
+            }
+            return false;
+        }
+
         /**
          * Transforms a SourceFile into a CommonJS module.
          *
@@ -85,7 +91,7 @@ namespace ts {
             const statements: Statement[] = [];
             const statementOffset = addPrologueDirectives(statements, node.statements, /*ensureUseStrict*/ !compilerOptions.noImplicitUseStrict, sourceElementVisitor);
 
-            if (!currentModuleInfo.exportEquals) {
+            if (shouldEmitUnderscoreUnderscoreESModule()) {
                 append(statements, createUnderscoreUnderscoreESModule());
             }
 
@@ -378,7 +384,7 @@ namespace ts {
             const statements: Statement[] = [];
             const statementOffset = addPrologueDirectives(statements, node.statements, /*ensureUseStrict*/ !compilerOptions.noImplicitUseStrict, sourceElementVisitor);
 
-            if (!currentModuleInfo.exportEquals) {
+            if (shouldEmitUnderscoreUnderscoreESModule()) {
                 append(statements, createUnderscoreUnderscoreESModule());
             }
 
diff --git a/tests/baselines/reference/importHelpersInIsolatedModules.js b/tests/baselines/reference/importHelpersInIsolatedModules.js
index 72a91ac365..454fde430d 100644
--- a/tests/baselines/reference/importHelpersInIsolatedModules.js
+++ b/tests/baselines/reference/importHelpersInIsolatedModules.js
@@ -69,7 +69,6 @@ C = tslib_1.__decorate([
 ], C);
 //// [script.js]
 "use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
 var tslib_1 = require("tslib");
 var A = (function () {
     function A() {
diff --git a/tests/baselines/reference/isolatedModulesPlainFile-AMD.js b/tests/baselines/reference/isolatedModulesPlainFile-AMD.js
index 4ed1fdf2c7..1e45ee159d 100644
--- a/tests/baselines/reference/isolatedModulesPlainFile-AMD.js
+++ b/tests/baselines/reference/isolatedModulesPlainFile-AMD.js
@@ -7,6 +7,5 @@ run(1);
 //// [isolatedModulesPlainFile-AMD.js]
 define(["require", "exports"], function (require, exports) {
     "use strict";
-    Object.defineProperty(exports, "__esModule", { value: true });
     run(1);
 });
diff --git a/tests/baselines/reference/isolatedModulesPlainFile-CommonJS.js b/tests/baselines/reference/isolatedModulesPlainFile-CommonJS.js
index 38739a700e..f40d217368 100644
--- a/tests/baselines/reference/isolatedModulesPlainFile-CommonJS.js
+++ b/tests/baselines/reference/isolatedModulesPlainFile-CommonJS.js
@@ -6,5 +6,4 @@ run(1);
 
 //// [isolatedModulesPlainFile-CommonJS.js]
 "use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
 run(1);
diff --git a/tests/baselines/reference/isolatedModulesPlainFile-UMD.js b/tests/baselines/reference/isolatedModulesPlainFile-UMD.js
index f37962a84a..ece949b910 100644
--- a/tests/baselines/reference/isolatedModulesPlainFile-UMD.js
+++ b/tests/baselines/reference/isolatedModulesPlainFile-UMD.js
@@ -15,6 +15,5 @@ run(1);
     }
 })(function (require, exports) {
     "use strict";
-    Object.defineProperty(exports, "__esModule", { value: true });
     run(1);
 });
diff --git a/tests/baselines/reference/transpile/Does not generate semantic diagnostics.js b/tests/baselines/reference/transpile/Does not generate semantic diagnostics.js
index 4571caffa3..61a703e13b 100644
--- a/tests/baselines/reference/transpile/Does not generate semantic diagnostics.js	
+++ b/tests/baselines/reference/transpile/Does not generate semantic diagnostics.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x = 0;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Generates expected syntactic diagnostics.js b/tests/baselines/reference/transpile/Generates expected syntactic diagnostics.js
index 4d133b7655..9d108d6331 100644
--- a/tests/baselines/reference/transpile/Generates expected syntactic diagnostics.js	
+++ b/tests/baselines/reference/transpile/Generates expected syntactic diagnostics.js	
@@ -1,5 +1,4 @@
 "use strict";
-exports.__esModule = true;
 a;
 b;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Generates module output.js b/tests/baselines/reference/transpile/Generates module output.js
index 2c7bb7add0..9eadd1f271 100644
--- a/tests/baselines/reference/transpile/Generates module output.js	
+++ b/tests/baselines/reference/transpile/Generates module output.js	
@@ -1,6 +1,5 @@
 define(["require", "exports"], function (require, exports) {
     "use strict";
-    exports.__esModule = true;
     var x = 0;
 });
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Generates no diagnostics for missing file references.js b/tests/baselines/reference/transpile/Generates no diagnostics for missing file references.js
index 04ba1d12e5..88d98628ee 100644
--- a/tests/baselines/reference/transpile/Generates no diagnostics for missing file references.js	
+++ b/tests/baselines/reference/transpile/Generates no diagnostics for missing file references.js	
@@ -1,5 +1,4 @@
 "use strict";
-exports.__esModule = true;
 /// <reference path="file2.ts" />
 var x = 0;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Generates no diagnostics with valid inputs.js b/tests/baselines/reference/transpile/Generates no diagnostics with valid inputs.js
index 4571caffa3..61a703e13b 100644
--- a/tests/baselines/reference/transpile/Generates no diagnostics with valid inputs.js	
+++ b/tests/baselines/reference/transpile/Generates no diagnostics with valid inputs.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x = 0;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/No extra errors for file without extension.js b/tests/baselines/reference/transpile/No extra errors for file without extension.js
index 4571caffa3..61a703e13b 100644
--- a/tests/baselines/reference/transpile/No extra errors for file without extension.js	
+++ b/tests/baselines/reference/transpile/No extra errors for file without extension.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x = 0;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Report an error when compiler-options module-kind is out-of-range.js b/tests/baselines/reference/transpile/Report an error when compiler-options module-kind is out-of-range.js
index e9493d9d59..1ceb1bcd14 100644
--- a/tests/baselines/reference/transpile/Report an error when compiler-options module-kind is out-of-range.js	
+++ b/tests/baselines/reference/transpile/Report an error when compiler-options module-kind is out-of-range.js	
@@ -1,3 +1,2 @@
 "use strict";
-exports.__esModule = true;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Report an error when compiler-options target-script is out-of-range.js b/tests/baselines/reference/transpile/Report an error when compiler-options target-script is out-of-range.js
index e9493d9d59..1ceb1bcd14 100644
--- a/tests/baselines/reference/transpile/Report an error when compiler-options target-script is out-of-range.js	
+++ b/tests/baselines/reference/transpile/Report an error when compiler-options target-script is out-of-range.js	
@@ -1,3 +1,2 @@
 "use strict";
-exports.__esModule = true;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Support options with lib values.js b/tests/baselines/reference/transpile/Support options with lib values.js
index 72e077de38..36c68f08b9 100644
--- a/tests/baselines/reference/transpile/Support options with lib values.js	
+++ b/tests/baselines/reference/transpile/Support options with lib values.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var a = 10;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Support options with types values.js b/tests/baselines/reference/transpile/Support options with types values.js
index 72e077de38..36c68f08b9 100644
--- a/tests/baselines/reference/transpile/Support options with types values.js	
+++ b/tests/baselines/reference/transpile/Support options with types values.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var a = 10;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports backslashes in file name.js b/tests/baselines/reference/transpile/Supports backslashes in file name.js
index 8ef38d2b61..942449753b 100644
--- a/tests/baselines/reference/transpile/Supports backslashes in file name.js	
+++ b/tests/baselines/reference/transpile/Supports backslashes in file name.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x;
 //# sourceMappingURL=b.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting allowJs.js b/tests/baselines/reference/transpile/Supports setting allowJs.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting allowJs.js	
+++ b/tests/baselines/reference/transpile/Supports setting allowJs.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting allowSyntheticDefaultImports.js b/tests/baselines/reference/transpile/Supports setting allowSyntheticDefaultImports.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting allowSyntheticDefaultImports.js	
+++ b/tests/baselines/reference/transpile/Supports setting allowSyntheticDefaultImports.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting allowUnreachableCode.js b/tests/baselines/reference/transpile/Supports setting allowUnreachableCode.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting allowUnreachableCode.js	
+++ b/tests/baselines/reference/transpile/Supports setting allowUnreachableCode.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting allowUnusedLabels.js b/tests/baselines/reference/transpile/Supports setting allowUnusedLabels.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting allowUnusedLabels.js	
+++ b/tests/baselines/reference/transpile/Supports setting allowUnusedLabels.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting alwaysStrict.js b/tests/baselines/reference/transpile/Supports setting alwaysStrict.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting alwaysStrict.js	
+++ b/tests/baselines/reference/transpile/Supports setting alwaysStrict.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting baseUrl.js b/tests/baselines/reference/transpile/Supports setting baseUrl.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting baseUrl.js	
+++ b/tests/baselines/reference/transpile/Supports setting baseUrl.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting charset.js b/tests/baselines/reference/transpile/Supports setting charset.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting charset.js	
+++ b/tests/baselines/reference/transpile/Supports setting charset.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting declaration.js b/tests/baselines/reference/transpile/Supports setting declaration.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting declaration.js	
+++ b/tests/baselines/reference/transpile/Supports setting declaration.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting declarationDir.js b/tests/baselines/reference/transpile/Supports setting declarationDir.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting declarationDir.js	
+++ b/tests/baselines/reference/transpile/Supports setting declarationDir.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting emitBOM.js b/tests/baselines/reference/transpile/Supports setting emitBOM.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting emitBOM.js	
+++ b/tests/baselines/reference/transpile/Supports setting emitBOM.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting emitDecoratorMetadata.js b/tests/baselines/reference/transpile/Supports setting emitDecoratorMetadata.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting emitDecoratorMetadata.js	
+++ b/tests/baselines/reference/transpile/Supports setting emitDecoratorMetadata.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting experimentalDecorators.js b/tests/baselines/reference/transpile/Supports setting experimentalDecorators.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting experimentalDecorators.js	
+++ b/tests/baselines/reference/transpile/Supports setting experimentalDecorators.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting forceConsistentCasingInFileNames.js b/tests/baselines/reference/transpile/Supports setting forceConsistentCasingInFileNames.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting forceConsistentCasingInFileNames.js	
+++ b/tests/baselines/reference/transpile/Supports setting forceConsistentCasingInFileNames.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting isolatedModules.js b/tests/baselines/reference/transpile/Supports setting isolatedModules.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting isolatedModules.js	
+++ b/tests/baselines/reference/transpile/Supports setting isolatedModules.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting jsx.js b/tests/baselines/reference/transpile/Supports setting jsx.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting jsx.js	
+++ b/tests/baselines/reference/transpile/Supports setting jsx.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting jsxFactory.js b/tests/baselines/reference/transpile/Supports setting jsxFactory.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting jsxFactory.js	
+++ b/tests/baselines/reference/transpile/Supports setting jsxFactory.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting lib.js b/tests/baselines/reference/transpile/Supports setting lib.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting lib.js	
+++ b/tests/baselines/reference/transpile/Supports setting lib.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting locale.js b/tests/baselines/reference/transpile/Supports setting locale.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting locale.js	
+++ b/tests/baselines/reference/transpile/Supports setting locale.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting module.js b/tests/baselines/reference/transpile/Supports setting module.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting module.js	
+++ b/tests/baselines/reference/transpile/Supports setting module.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting moduleResolution.js b/tests/baselines/reference/transpile/Supports setting moduleResolution.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting moduleResolution.js	
+++ b/tests/baselines/reference/transpile/Supports setting moduleResolution.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting newLine.js b/tests/baselines/reference/transpile/Supports setting newLine.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting newLine.js	
+++ b/tests/baselines/reference/transpile/Supports setting newLine.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noEmit.js b/tests/baselines/reference/transpile/Supports setting noEmit.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noEmit.js	
+++ b/tests/baselines/reference/transpile/Supports setting noEmit.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noEmitHelpers.js b/tests/baselines/reference/transpile/Supports setting noEmitHelpers.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noEmitHelpers.js	
+++ b/tests/baselines/reference/transpile/Supports setting noEmitHelpers.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noEmitOnError.js b/tests/baselines/reference/transpile/Supports setting noEmitOnError.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noEmitOnError.js	
+++ b/tests/baselines/reference/transpile/Supports setting noEmitOnError.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noErrorTruncation.js b/tests/baselines/reference/transpile/Supports setting noErrorTruncation.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noErrorTruncation.js	
+++ b/tests/baselines/reference/transpile/Supports setting noErrorTruncation.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noFallthroughCasesInSwitch.js b/tests/baselines/reference/transpile/Supports setting noFallthroughCasesInSwitch.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noFallthroughCasesInSwitch.js	
+++ b/tests/baselines/reference/transpile/Supports setting noFallthroughCasesInSwitch.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noImplicitAny.js b/tests/baselines/reference/transpile/Supports setting noImplicitAny.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noImplicitAny.js	
+++ b/tests/baselines/reference/transpile/Supports setting noImplicitAny.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noImplicitReturns.js b/tests/baselines/reference/transpile/Supports setting noImplicitReturns.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noImplicitReturns.js	
+++ b/tests/baselines/reference/transpile/Supports setting noImplicitReturns.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noImplicitThis.js b/tests/baselines/reference/transpile/Supports setting noImplicitThis.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noImplicitThis.js	
+++ b/tests/baselines/reference/transpile/Supports setting noImplicitThis.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noImplicitUseStrict.js b/tests/baselines/reference/transpile/Supports setting noImplicitUseStrict.js
index 8124d51fde..8394371f90 100644
--- a/tests/baselines/reference/transpile/Supports setting noImplicitUseStrict.js	
+++ b/tests/baselines/reference/transpile/Supports setting noImplicitUseStrict.js	
@@ -1,3 +1,2 @@
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noLib.js b/tests/baselines/reference/transpile/Supports setting noLib.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noLib.js	
+++ b/tests/baselines/reference/transpile/Supports setting noLib.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting noResolve.js b/tests/baselines/reference/transpile/Supports setting noResolve.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting noResolve.js	
+++ b/tests/baselines/reference/transpile/Supports setting noResolve.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting out.js b/tests/baselines/reference/transpile/Supports setting out.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting out.js	
+++ b/tests/baselines/reference/transpile/Supports setting out.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting outDir.js b/tests/baselines/reference/transpile/Supports setting outDir.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting outDir.js	
+++ b/tests/baselines/reference/transpile/Supports setting outDir.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting outFile.js b/tests/baselines/reference/transpile/Supports setting outFile.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting outFile.js	
+++ b/tests/baselines/reference/transpile/Supports setting outFile.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting paths.js b/tests/baselines/reference/transpile/Supports setting paths.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting paths.js	
+++ b/tests/baselines/reference/transpile/Supports setting paths.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting preserveConstEnums.js b/tests/baselines/reference/transpile/Supports setting preserveConstEnums.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting preserveConstEnums.js	
+++ b/tests/baselines/reference/transpile/Supports setting preserveConstEnums.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting reactNamespace.js b/tests/baselines/reference/transpile/Supports setting reactNamespace.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting reactNamespace.js	
+++ b/tests/baselines/reference/transpile/Supports setting reactNamespace.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting removeComments.js b/tests/baselines/reference/transpile/Supports setting removeComments.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting removeComments.js	
+++ b/tests/baselines/reference/transpile/Supports setting removeComments.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting rootDir.js b/tests/baselines/reference/transpile/Supports setting rootDir.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting rootDir.js	
+++ b/tests/baselines/reference/transpile/Supports setting rootDir.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting rootDirs.js b/tests/baselines/reference/transpile/Supports setting rootDirs.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting rootDirs.js	
+++ b/tests/baselines/reference/transpile/Supports setting rootDirs.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting skipDefaultLibCheck.js b/tests/baselines/reference/transpile/Supports setting skipDefaultLibCheck.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting skipDefaultLibCheck.js	
+++ b/tests/baselines/reference/transpile/Supports setting skipDefaultLibCheck.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting skipLibCheck.js b/tests/baselines/reference/transpile/Supports setting skipLibCheck.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting skipLibCheck.js	
+++ b/tests/baselines/reference/transpile/Supports setting skipLibCheck.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting strictNullChecks.js b/tests/baselines/reference/transpile/Supports setting strictNullChecks.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting strictNullChecks.js	
+++ b/tests/baselines/reference/transpile/Supports setting strictNullChecks.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting stripInternal.js b/tests/baselines/reference/transpile/Supports setting stripInternal.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting stripInternal.js	
+++ b/tests/baselines/reference/transpile/Supports setting stripInternal.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting suppressExcessPropertyErrors.js b/tests/baselines/reference/transpile/Supports setting suppressExcessPropertyErrors.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting suppressExcessPropertyErrors.js	
+++ b/tests/baselines/reference/transpile/Supports setting suppressExcessPropertyErrors.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting suppressImplicitAnyIndexErrors.js b/tests/baselines/reference/transpile/Supports setting suppressImplicitAnyIndexErrors.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting suppressImplicitAnyIndexErrors.js	
+++ b/tests/baselines/reference/transpile/Supports setting suppressImplicitAnyIndexErrors.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting typeRoots.js b/tests/baselines/reference/transpile/Supports setting typeRoots.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting typeRoots.js	
+++ b/tests/baselines/reference/transpile/Supports setting typeRoots.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports setting types.js b/tests/baselines/reference/transpile/Supports setting types.js
index f960e73bcb..8d91090453 100644
--- a/tests/baselines/reference/transpile/Supports setting types.js	
+++ b/tests/baselines/reference/transpile/Supports setting types.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 x;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Supports urls in file name.js b/tests/baselines/reference/transpile/Supports urls in file name.js
index 933981306d..3923d3c9a4 100644
--- a/tests/baselines/reference/transpile/Supports urls in file name.js	
+++ b/tests/baselines/reference/transpile/Supports urls in file name.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/Uses correct newLine character.js b/tests/baselines/reference/transpile/Uses correct newLine character.js
index 04042012d1..bab9c3c444 100644
--- a/tests/baselines/reference/transpile/Uses correct newLine character.js	
+++ b/tests/baselines/reference/transpile/Uses correct newLine character.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x = 0;
 //# sourceMappingURL=file.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/transpile .js files.js b/tests/baselines/reference/transpile/transpile .js files.js
index b9048bd515..c17099d84b 100644
--- a/tests/baselines/reference/transpile/transpile .js files.js	
+++ b/tests/baselines/reference/transpile/transpile .js files.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var a = 10;
 //# sourceMappingURL=input.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/transpile/transpile file as tsx if jsx is specified.js b/tests/baselines/reference/transpile/transpile file as tsx if jsx is specified.js
index 2a73615e47..baa27ee64c 100644
--- a/tests/baselines/reference/transpile/transpile file as tsx if jsx is specified.js	
+++ b/tests/baselines/reference/transpile/transpile file as tsx if jsx is specified.js	
@@ -1,4 +1,3 @@
 "use strict";
-exports.__esModule = true;
 var x = React.createElement("div", null);
 //# sourceMappingURL=file.js.map
\ No newline at end of file