diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 2aee597092dd9..6bc966a11cb4d 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -44,6 +44,7 @@ namespace ts {
 
         let compilerOptions = host.getCompilerOptions();
         let languageVersion = compilerOptions.target || ScriptTarget.ES3;
+        let modulekind = compilerOptions.module ? compilerOptions.module : languageVersion === ScriptTarget.ES6 ? ModuleKind.ES6 : ModuleKind.None;
 
         let emitResolver = createResolver();
 
@@ -13379,9 +13380,9 @@ namespace ts {
                     }
                 }
                 else {
-                    if (languageVersion >= ScriptTarget.ES6 && !isInAmbientContext(node)) {
+                    if (modulekind === ModuleKind.ES6 && !isInAmbientContext(node)) {
                         // Import equals declaration is deprecated in es6 or above
-                        grammarErrorOnNode(node, Diagnostics.Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_or_higher_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_or_import_d_from_mod_instead);
+                        grammarErrorOnNode(node, Diagnostics.Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_import_d_from_mod_or_another_module_format_instead);
                     }
                 }
             }
@@ -13456,11 +13457,11 @@ namespace ts {
             checkExternalModuleExports(<SourceFile | ModuleDeclaration>container);
 
             if (node.isExportEquals && !isInAmbientContext(node)) {
-                if (languageVersion >= ScriptTarget.ES6) {
-                    // export assignment is deprecated in es6 or above
-                    grammarErrorOnNode(node, Diagnostics.Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_or_higher_Consider_using_export_default_instead);
+                if (modulekind === ModuleKind.ES6) {
+                    // export assignment is not supported in es6 modules
+                    grammarErrorOnNode(node, Diagnostics.Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_export_default_or_another_module_format_instead);
                 }
-                else if (compilerOptions.module === ModuleKind.System) {
+                else if (modulekind === ModuleKind.System) {
                     // system modules does not support export assignment
                     grammarErrorOnNode(node, Diagnostics.Export_assignment_is_not_supported_when_module_flag_is_system);
                 }
diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index 1670251973ab1..f1d4b6e31ec37 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -76,10 +76,11 @@ namespace ts {
                 "amd": ModuleKind.AMD,
                 "system": ModuleKind.System,
                 "umd": ModuleKind.UMD,
+                "es6": ModuleKind.ES6,
             },
-            description: Diagnostics.Specify_module_code_generation_Colon_commonjs_amd_system_or_umd,
+            description: Diagnostics.Specify_module_code_generation_Colon_commonjs_amd_system_umd_or_es6,
             paramType: Diagnostics.KIND,
-            error: Diagnostics.Argument_for_module_option_must_be_commonjs_amd_system_or_umd
+            error: Diagnostics.Argument_for_module_option_must_be_commonjs_amd_system_umd_or_es6
         },
         {
             name: "newLine",
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index e6ece87b5a9bc..f9789495be1e6 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -619,15 +619,15 @@
         "category": "Error",
         "code": 1200
     },
-    "Import assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'import * as ns from \"mod\"', 'import {a} from \"mod\"' or 'import d from \"mod\"' instead.": {
+    "Import assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'import * as ns from \"mod\"', 'import {a} from \"mod\"', 'import d from \"mod\"', or another module format instead.": {
         "category": "Error",
         "code": 1202
     },
-    "Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.": {
+    "Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.": {
         "category": "Error",
         "code": 1203
     },
-    "Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.": {
+    "Cannot compile modules into 'es6' when targeting 'ES5' or lower.": {
         "category": "Error",
         "code": 1204
     },
@@ -2101,7 +2101,7 @@
         "category": "Message",
         "code": 6015
     },
-    "Specify module code generation: 'commonjs', 'amd', 'system' or 'umd'": {
+    "Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es6'": {
         "category": "Message",
         "code": 6016
     },
@@ -2185,7 +2185,7 @@
         "category": "Error",
         "code": 6045
     },
-    "Argument for '--module' option must be 'commonjs', 'amd', 'system' or 'umd'.": {
+    "Argument for '--module' option must be 'commonjs', 'amd', 'system', 'umd', or 'es6'.": {
         "category": "Error",
         "code": 6046
     },
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index bd16b13bb0984..6a6b75af65f37 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -64,6 +64,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
         let compilerOptions = host.getCompilerOptions();
         let languageVersion = compilerOptions.target || ScriptTarget.ES3;
+        let modulekind = compilerOptions.module ? compilerOptions.module : languageVersion === ScriptTarget.ES6 ? ModuleKind.ES6 : ModuleKind.None;
         let sourceMapDataList: SourceMapData[] = compilerOptions.sourceMap || compilerOptions.inlineSourceMap ? [] : undefined;
         let diagnostics: Diagnostic[] = [];
         let newLine = host.getNewLine();
@@ -188,6 +189,14 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
             /** If removeComments is true, no leading-comments needed to be emitted **/
             let emitLeadingCommentsOfPosition = compilerOptions.removeComments ? function (pos: number) { } : emitLeadingCommentsOfPositionWorker;
+            
+            let moduleEmitDelegates: Map<(node: SourceFile, startIndex: number) => void> = {
+                [ModuleKind.ES6]: emitES6Module,
+                [ModuleKind.AMD]: emitAMDModule,
+                [ModuleKind.System]: emitSystemModule,
+                [ModuleKind.UMD]: emitUMDModule,
+                [ModuleKind.CommonJS]: emitCommonJSModule,
+            };
 
             if (compilerOptions.sourceMap || compilerOptions.inlineSourceMap) {
                 initializeEmitterWithSourceMaps();
@@ -1493,7 +1502,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                 if (container) {
                     if (container.kind === SyntaxKind.SourceFile) {
                         // Identifier references module export
-                        if (languageVersion < ScriptTarget.ES6 && compilerOptions.module !== ModuleKind.System) {
+                        if (modulekind !== ModuleKind.ES6 && modulekind !== ModuleKind.System) {
                             write("exports.");
                         }
                     }
@@ -1503,7 +1512,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                         write(".");
                     }
                 }
-                else if (languageVersion < ScriptTarget.ES6) {
+                else if (modulekind !== ModuleKind.ES6) {
                     let declaration = resolver.getReferencedImportDeclaration(node);
                     if (declaration) {
                         if (declaration.kind === SyntaxKind.ImportClause) {
@@ -3056,7 +3065,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                         write(getGeneratedNameForNode(container));
                         write(".");
                     }
-                    else if (languageVersion < ScriptTarget.ES6 && compilerOptions.module !== ModuleKind.System) {
+                    else if (modulekind !== ModuleKind.ES6 && modulekind !== ModuleKind.System) {
                         write("exports.");
                     }
                 }
@@ -3076,7 +3085,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                 if (node.parent.kind === SyntaxKind.SourceFile) {
                     Debug.assert(!!(node.flags & NodeFlags.Default) || node.kind === SyntaxKind.ExportAssignment);
                     // only allow export default at a source file level
-                    if (compilerOptions.module === ModuleKind.CommonJS || compilerOptions.module === ModuleKind.AMD || compilerOptions.module === ModuleKind.UMD) {
+                    if (modulekind === ModuleKind.CommonJS || modulekind === ModuleKind.AMD || modulekind === ModuleKind.UMD) {
                         if (!currentSourceFile.symbol.exports["___esModule"]) {
                             if (languageVersion === ScriptTarget.ES5) {
                                 // default value of configurable, enumerable, writable are `false`.
@@ -3098,7 +3107,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                     emitStart(node);
 
                     // emit call to exporter only for top level nodes
-                    if (compilerOptions.module === ModuleKind.System && node.parent === currentSourceFile) {
+                    if (modulekind === ModuleKind.System && node.parent === currentSourceFile) {
                         // emit export default <smth> as
                         // export("default", <smth>)
                         write(`${exportFunctionForFile}("`);
@@ -3134,7 +3143,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
             }
 
             function emitExportMemberAssignments(name: Identifier) {
-                if (compilerOptions.module === ModuleKind.System) {
+                if (modulekind === ModuleKind.System) {
                     return;
                 }
                 
@@ -3154,7 +3163,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
             }
             
             function emitExportSpecifierInSystemModule(specifier: ExportSpecifier): void {
-                Debug.assert(compilerOptions.module === ModuleKind.System);
+                Debug.assert(modulekind === ModuleKind.System);
 
                 if (!resolver.getReferencedValueDeclaration(specifier.propertyName || specifier.name) && !resolver.isValueAliasDeclaration(specifier) ) {
                     return;
@@ -3491,7 +3500,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
             function isES6ExportedDeclaration(node: Node) {
                 return !!(node.flags & NodeFlags.Export) &&
-                    languageVersion >= ScriptTarget.ES6 &&
+                    modulekind === ModuleKind.ES6 &&
                     node.parent.kind === SyntaxKind.SourceFile;
             }
 
@@ -5257,7 +5266,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                     write(";");
                 }
                 if (languageVersion < ScriptTarget.ES6 && node.parent === currentSourceFile) {
-                    if (compilerOptions.module === ModuleKind.System && (node.flags & NodeFlags.Export)) {
+                    if (modulekind === ModuleKind.System && (node.flags & NodeFlags.Export)) {
                         // write the call to exporter for enum
                         writeLine();
                         write(`${exportFunctionForFile}("`);
@@ -5379,7 +5388,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                 write(" = {}));");
                 emitEnd(node);
                 if (!isES6ExportedDeclaration(node) && node.name.kind === SyntaxKind.Identifier && node.parent === currentSourceFile) {
-                    if (compilerOptions.module === ModuleKind.System && (node.flags & NodeFlags.Export)) {
+                    if (modulekind === ModuleKind.System && (node.flags & NodeFlags.Export)) {
                         writeLine();
                         write(`${exportFunctionForFile}("`);
                         emitDeclarationName(node);
@@ -5443,7 +5452,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
             }
 
             function emitImportDeclaration(node: ImportDeclaration) {
-                if (languageVersion < ScriptTarget.ES6) {
+                if (modulekind !== ModuleKind.ES6) {
                     return emitExternalImportDeclaration(node);
                 }
 
@@ -5494,7 +5503,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                     let isExportedImport = node.kind === SyntaxKind.ImportEqualsDeclaration && (node.flags & NodeFlags.Export) !== 0;
                     let namespaceDeclaration = getNamespaceDeclarationNode(node);
 
-                    if (compilerOptions.module !== ModuleKind.AMD) {
+                    if (modulekind !== ModuleKind.AMD) {
                         emitLeadingComments(node);
                         emitStart(node);
                         if (namespaceDeclaration && !isDefaultImport(node)) {
@@ -5606,15 +5615,15 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
             }
 
             function emitExportDeclaration(node: ExportDeclaration) {
-                Debug.assert(compilerOptions.module !== ModuleKind.System);
+                Debug.assert(modulekind !== ModuleKind.System);
 
-                if (languageVersion < ScriptTarget.ES6) {
+                if (modulekind !== ModuleKind.ES6) {
                     if (node.moduleSpecifier && (!node.exportClause || resolver.isValueAliasDeclaration(node))) {
                         emitStart(node);
                         let generatedName = getGeneratedNameForNode(node);
                         if (node.exportClause) {
                             // export { x, y, ... } from "foo"
-                            if (compilerOptions.module !== ModuleKind.AMD) {
+                            if (modulekind !== ModuleKind.AMD) {
                                 write("var ");
                                 write(generatedName);
                                 write(" = ");
@@ -5641,7 +5650,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                             // export * from "foo"
                             writeLine();
                             write("__export(");
-                            if (compilerOptions.module !== ModuleKind.AMD) {
+                            if (modulekind !== ModuleKind.AMD) {
                                 emitRequire(getExternalModuleName(node));
                             }
                             else {
@@ -5674,7 +5683,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
             }
 
             function emitExportOrImportSpecifierList(specifiers: ImportOrExportSpecifier[], shouldEmit: (node: Node) => boolean) {
-                Debug.assert(languageVersion >= ScriptTarget.ES6);
+                Debug.assert(modulekind === ModuleKind.ES6);
 
                 let needsComma = false;
                 for (let specifier of specifiers) {
@@ -5694,7 +5703,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
             function emitExportAssignment(node: ExportAssignment) {
                 if (!node.isExportEquals && resolver.isValueAliasDeclaration(node)) {
-                    if (languageVersion >= ScriptTarget.ES6) {
+                    if (modulekind === ModuleKind.ES6) {
                         writeLine();
                         emitStart(node);
                         write("export default ");
@@ -5709,7 +5718,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                     else {
                         writeLine();
                         emitStart(node);
-                        if (compilerOptions.module === ModuleKind.System) {
+                        if (modulekind === ModuleKind.System) {
                             write(`${exportFunctionForFile}("default",`);
                             emit(node.expression);
                             write(")");
@@ -6155,7 +6164,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
             }
 
             function isCurrentFileSystemExternalModule() {
-                return compilerOptions.module === ModuleKind.System && isExternalModule(currentSourceFile);
+                return modulekind === ModuleKind.System && isExternalModule(currentSourceFile);
             }
 
             function emitSystemModuleBody(node: SourceFile, dependencyGroups: DependencyGroup[], startIndex: number): void {
@@ -6713,21 +6722,8 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                 let startIndex = emitDirectivePrologues(node.statements, /*startWithNewLine*/ false);
 
                 if (isExternalModule(node) || compilerOptions.isolatedModules) {
-                    if (languageVersion >= ScriptTarget.ES6) {
-                        emitES6Module(node, startIndex);
-                    }
-                    else if (compilerOptions.module === ModuleKind.AMD) {
-                        emitAMDModule(node, startIndex);
-                    }
-                    else if (compilerOptions.module === ModuleKind.System) {
-                        emitSystemModule(node, startIndex);
-                    }
-                    else if (compilerOptions.module === ModuleKind.UMD) {
-                        emitUMDModule(node, startIndex);
-                    }
-                    else {
-                        emitCommonJSModule(node, startIndex);
-                    }
+                    let emitModule = moduleEmitDelegates[modulekind] || moduleEmitDelegates[ModuleKind.CommonJS];
+                    emitModule(node, startIndex);
                 }
                 else {
                     externalImports = undefined;
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 3da3c354fb236..0dbaa3b39b251 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -1022,9 +1022,9 @@ namespace ts {
                 programDiagnostics.add(createFileDiagnostic(firstExternalModuleSourceFile, span.start, span.length, Diagnostics.Cannot_compile_modules_unless_the_module_flag_is_provided));
             }
 
-            // Cannot specify module gen target when in es6 or above
-            if (options.module && languageVersion >= ScriptTarget.ES6) {
-                programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Cannot_compile_modules_into_commonjs_amd_system_or_umd_when_targeting_ES6_or_higher));
+            // Cannot specify module gen target of es6 when below es6
+            if (options.module === ModuleKind.ES6 && languageVersion < ScriptTarget.ES6) {
+                programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Cannot_compile_modules_into_es6_when_targeting_ES5_or_lower));
             }
 
             // there has to be common source directory if user specified --outdir || --sourceRoot
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index d2757bb7937ca..2cb429a993e80 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -2076,6 +2076,7 @@ namespace ts {
         AMD = 2,
         UMD = 3,
         System = 4,
+        ES6 = 5,
     }
 
     export const enum JsxEmit {
diff --git a/tests/baselines/reference/constDeclarations-access5.errors.txt b/tests/baselines/reference/constDeclarations-access5.errors.txt
index d58abfe6bd4a3..23200e50ee42b 100644
--- a/tests/baselines/reference/constDeclarations-access5.errors.txt
+++ b/tests/baselines/reference/constDeclarations-access5.errors.txt
@@ -1,5 +1,3 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-tests/cases/compiler/constDeclarations_access_2.ts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'import * as ns from "mod"', 'import {a} from "mod"' or 'import d from "mod"' instead.
 tests/cases/compiler/constDeclarations_access_2.ts(4,1): error TS2450: Left-hand side of assignment expression cannot be a constant.
 tests/cases/compiler/constDeclarations_access_2.ts(5,1): error TS2450: Left-hand side of assignment expression cannot be a constant.
 tests/cases/compiler/constDeclarations_access_2.ts(6,1): error TS2450: Left-hand side of assignment expression cannot be a constant.
@@ -20,12 +18,9 @@ tests/cases/compiler/constDeclarations_access_2.ts(22,3): error TS2449: The oper
 tests/cases/compiler/constDeclarations_access_2.ts(24,1): error TS2450: Left-hand side of assignment expression cannot be a constant.
 
 
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/constDeclarations_access_2.ts (19 errors) ====
+==== tests/cases/compiler/constDeclarations_access_2.ts (18 errors) ====
     ///<reference path='constDeclarations_access_1.ts'/>
     import m = require('constDeclarations_access_1');
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS1202: Import assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'import * as ns from "mod"', 'import {a} from "mod"' or 'import d from "mod"' instead.
     // Errors
     m.x = 1;
     ~~~
diff --git a/tests/baselines/reference/constDeclarations-access5.js b/tests/baselines/reference/constDeclarations-access5.js
index 7735e37d2b0c3..71b8c99ae58f0 100644
--- a/tests/baselines/reference/constDeclarations-access5.js
+++ b/tests/baselines/reference/constDeclarations-access5.js
@@ -49,35 +49,39 @@ m.x.toString();
 
 
 //// [constDeclarations_access_1.js]
-export const x = 0;
+define(["require", "exports"], function (require, exports) {
+    exports.x = 0;
+});
 //// [constDeclarations_access_2.js]
-// Errors
-m.x = 1;
-m.x += 2;
-m.x -= 3;
-m.x *= 4;
-m.x /= 5;
-m.x %= 6;
-m.x <<= 7;
-m.x >>= 8;
-m.x >>>= 9;
-m.x &= 10;
-m.x |= 11;
-m.x ^= 12;
-m;
-m.x++;
-m.x--;
-++m.x;
---m.x;
-++((m.x));
-m["x"] = 0;
-// OK
-var a = m.x + 1;
-function f(v) { }
-f(m.x);
-if (m.x) { }
-m.x;
-(m.x);
--m.x;
-+m.x;
-m.x.toString();
+define(["require", "exports", 'constDeclarations_access_1'], function (require, exports, m) {
+    // Errors
+    m.x = 1;
+    m.x += 2;
+    m.x -= 3;
+    m.x *= 4;
+    m.x /= 5;
+    m.x %= 6;
+    m.x <<= 7;
+    m.x >>= 8;
+    m.x >>>= 9;
+    m.x &= 10;
+    m.x |= 11;
+    m.x ^= 12;
+    m;
+    m.x++;
+    m.x--;
+    ++m.x;
+    --m.x;
+    ++((m.x));
+    m["x"] = 0;
+    // OK
+    var a = m.x + 1;
+    function f(v) { }
+    f(m.x);
+    if (m.x) { }
+    m.x;
+    (m.x);
+    -m.x;
+    +m.x;
+    m.x.toString();
+});
diff --git a/tests/baselines/reference/es5andes6module.errors.txt b/tests/baselines/reference/es5andes6module.errors.txt
new file mode 100644
index 0000000000000..d5a672b948628
--- /dev/null
+++ b/tests/baselines/reference/es5andes6module.errors.txt
@@ -0,0 +1,19 @@
+error TS1204: Cannot compile modules into 'es6' when targeting 'ES5' or lower.
+
+
+!!! error TS1204: Cannot compile modules into 'es6' when targeting 'ES5' or lower.
+==== tests/cases/compiler/es5andes6module.ts (0 errors) ====
+    
+    export default class A
+    {
+        constructor ()
+        {
+    
+        }
+    
+        public B()
+        {
+            return 42;
+        }
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/es5andes6module.js b/tests/baselines/reference/es5andes6module.js
new file mode 100644
index 0000000000000..0d489357852cb
--- /dev/null
+++ b/tests/baselines/reference/es5andes6module.js
@@ -0,0 +1,26 @@
+//// [es5andes6module.ts]
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}
+
+
+//// [es5andes6module.js]
+var A = (function () {
+    function A() {
+    }
+    A.prototype.B = function () {
+        return 42;
+    };
+    return A;
+})();
+exports.default = A;
diff --git a/tests/baselines/reference/es6-amd.errors.txt b/tests/baselines/reference/es6-amd.errors.txt
deleted file mode 100644
index b4a6442458b78..0000000000000
--- a/tests/baselines/reference/es6-amd.errors.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6-amd.ts (0 errors) ====
-    
-    class A
-    {
-        constructor ()
-        {
-    
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6-amd.symbols b/tests/baselines/reference/es6-amd.symbols
new file mode 100644
index 0000000000000..ad5cf38e7cd09
--- /dev/null
+++ b/tests/baselines/reference/es6-amd.symbols
@@ -0,0 +1,16 @@
+=== tests/cases/compiler/es6-amd.ts ===
+
+class A
+>A : Symbol(A, Decl(es6-amd.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6-amd.ts, 6, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6-amd.types b/tests/baselines/reference/es6-amd.types
new file mode 100644
index 0000000000000..7a6fb6e32f559
--- /dev/null
+++ b/tests/baselines/reference/es6-amd.types
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es6-amd.ts ===
+
+class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6-declaration-amd.errors.txt b/tests/baselines/reference/es6-declaration-amd.errors.txt
deleted file mode 100644
index fe5a254dd54a4..0000000000000
--- a/tests/baselines/reference/es6-declaration-amd.errors.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6-declaration-amd.ts (0 errors) ====
-    
-    class A
-    {
-        constructor ()
-        {
-    
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6-declaration-amd.symbols b/tests/baselines/reference/es6-declaration-amd.symbols
new file mode 100644
index 0000000000000..f1a728396cc58
--- /dev/null
+++ b/tests/baselines/reference/es6-declaration-amd.symbols
@@ -0,0 +1,16 @@
+=== tests/cases/compiler/es6-declaration-amd.ts ===
+
+class A
+>A : Symbol(A, Decl(es6-declaration-amd.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6-declaration-amd.ts, 6, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6-declaration-amd.types b/tests/baselines/reference/es6-declaration-amd.types
new file mode 100644
index 0000000000000..a46d22c82c58d
--- /dev/null
+++ b/tests/baselines/reference/es6-declaration-amd.types
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es6-declaration-amd.ts ===
+
+class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6-sourcemap-amd.errors.txt b/tests/baselines/reference/es6-sourcemap-amd.errors.txt
deleted file mode 100644
index 8ffa16aaa2397..0000000000000
--- a/tests/baselines/reference/es6-sourcemap-amd.errors.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6-sourcemap-amd.ts (0 errors) ====
-    
-    class A
-    {
-        constructor ()
-        {
-    
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6-sourcemap-amd.symbols b/tests/baselines/reference/es6-sourcemap-amd.symbols
new file mode 100644
index 0000000000000..13be6367ba0d3
--- /dev/null
+++ b/tests/baselines/reference/es6-sourcemap-amd.symbols
@@ -0,0 +1,16 @@
+=== tests/cases/compiler/es6-sourcemap-amd.ts ===
+
+class A
+>A : Symbol(A, Decl(es6-sourcemap-amd.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6-sourcemap-amd.ts, 6, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6-sourcemap-amd.types b/tests/baselines/reference/es6-sourcemap-amd.types
new file mode 100644
index 0000000000000..580a688afab44
--- /dev/null
+++ b/tests/baselines/reference/es6-sourcemap-amd.types
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es6-sourcemap-amd.ts ===
+
+class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6-umd.errors.txt b/tests/baselines/reference/es6-umd.errors.txt
deleted file mode 100644
index 72a58585073bc..0000000000000
--- a/tests/baselines/reference/es6-umd.errors.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6-umd.ts (0 errors) ====
-    
-    class A
-    {
-        constructor ()
-        {
-    
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6-umd.symbols b/tests/baselines/reference/es6-umd.symbols
new file mode 100644
index 0000000000000..f7c57215ea6d3
--- /dev/null
+++ b/tests/baselines/reference/es6-umd.symbols
@@ -0,0 +1,16 @@
+=== tests/cases/compiler/es6-umd.ts ===
+
+class A
+>A : Symbol(A, Decl(es6-umd.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6-umd.ts, 6, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6-umd.types b/tests/baselines/reference/es6-umd.types
new file mode 100644
index 0000000000000..f43c491e003a5
--- /dev/null
+++ b/tests/baselines/reference/es6-umd.types
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es6-umd.ts ===
+
+class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6-umd2.errors.txt b/tests/baselines/reference/es6-umd2.errors.txt
deleted file mode 100644
index 00becfb105fa1..0000000000000
--- a/tests/baselines/reference/es6-umd2.errors.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6-umd2.ts (0 errors) ====
-    
-    export class A
-    {
-        constructor ()
-        {
-    
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6-umd2.js b/tests/baselines/reference/es6-umd2.js
index 416932d89bc2a..04c17d49951fb 100644
--- a/tests/baselines/reference/es6-umd2.js
+++ b/tests/baselines/reference/es6-umd2.js
@@ -14,10 +14,20 @@ export class A
 }
 
 //// [es6-umd2.js]
-export class A {
-    constructor() {
+(function (deps, factory) {
+    if (typeof module === 'object' && typeof module.exports === 'object') {
+        var v = factory(require, exports); if (v !== undefined) module.exports = v;
     }
-    B() {
-        return 42;
+    else if (typeof define === 'function' && define.amd) {
+        define(deps, factory);
     }
-}
+})(["require", "exports"], function (require, exports) {
+    class A {
+        constructor() {
+        }
+        B() {
+            return 42;
+        }
+    }
+    exports.A = A;
+});
diff --git a/tests/baselines/reference/es6-umd2.symbols b/tests/baselines/reference/es6-umd2.symbols
new file mode 100644
index 0000000000000..88acf1272798e
--- /dev/null
+++ b/tests/baselines/reference/es6-umd2.symbols
@@ -0,0 +1,16 @@
+=== tests/cases/compiler/es6-umd2.ts ===
+
+export class A
+>A : Symbol(A, Decl(es6-umd2.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6-umd2.ts, 6, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6-umd2.types b/tests/baselines/reference/es6-umd2.types
new file mode 100644
index 0000000000000..eb66523c6ecec
--- /dev/null
+++ b/tests/baselines/reference/es6-umd2.types
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es6-umd2.ts ===
+
+export class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6ExportAssignment.errors.txt b/tests/baselines/reference/es6ExportAssignment.errors.txt
index 1db7d04e05e9f..970d2e184dc51 100644
--- a/tests/baselines/reference/es6ExportAssignment.errors.txt
+++ b/tests/baselines/reference/es6ExportAssignment.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/compiler/es6ExportAssignment.ts(3,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+tests/cases/compiler/es6ExportAssignment.ts(3,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
 
 
 ==== tests/cases/compiler/es6ExportAssignment.ts (1 errors) ====
@@ -6,4 +6,4 @@ tests/cases/compiler/es6ExportAssignment.ts(3,1): error TS1203: Export assignmen
     var a = 10;
     export = a;
     ~~~~~~~~~~~
-!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
\ No newline at end of file
+!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ExportAssignment2.errors.txt b/tests/baselines/reference/es6ExportAssignment2.errors.txt
index d5e1dfebd9df7..248491f98c3ac 100644
--- a/tests/baselines/reference/es6ExportAssignment2.errors.txt
+++ b/tests/baselines/reference/es6ExportAssignment2.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/compiler/a.ts(3,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+tests/cases/compiler/a.ts(3,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
 
 
 ==== tests/cases/compiler/a.ts (1 errors) ====
@@ -6,7 +6,7 @@ tests/cases/compiler/a.ts(3,1): error TS1203: Export assignment cannot be used w
     var a = 10;
     export = a;  // Error: export = not allowed in ES6
     ~~~~~~~~~~~
-!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
     
 ==== tests/cases/compiler/b.ts (0 errors) ====
     import * as a from "a";
diff --git a/tests/baselines/reference/es6ExportEquals.errors.txt b/tests/baselines/reference/es6ExportEquals.errors.txt
index 174c72341f6c9..e8db09456d3e1 100644
--- a/tests/baselines/reference/es6ExportEquals.errors.txt
+++ b/tests/baselines/reference/es6ExportEquals.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/compiler/es6ExportEquals.ts(4,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+tests/cases/compiler/es6ExportEquals.ts(4,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
 tests/cases/compiler/es6ExportEquals.ts(4,1): error TS2309: An export assignment cannot be used in a module with other exported elements.
 
 
@@ -8,7 +8,7 @@ tests/cases/compiler/es6ExportEquals.ts(4,1): error TS2309: An export assignment
     
     export = f;
     ~~~~~~~~~~~
-!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
     ~~~~~~~~~~~
 !!! error TS2309: An export assignment cannot be used in a module with other exported elements.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.errors.txt b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.errors.txt
deleted file mode 100644
index b0b7465477ba7..0000000000000
--- a/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.errors.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6ImportDefaultBindingFollowedWithNamedImport_0.ts (0 errors) ====
-    
-    export var a = 10;
-    export var x = a;
-    export var m = a;
-    export default {};
-    
-==== tests/cases/compiler/es6ImportDefaultBindingFollowedWithNamedImport_1.ts (0 errors) ====
-    import defaultBinding1, { } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-    import defaultBinding2, { a } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-    var x1: number = a;
-    import defaultBinding3, { a as b } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-    var x1: number = b;
-    import defaultBinding4, { x, a as y } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-    var x1: number = x;
-    var x1: number = y;
-    import defaultBinding5, { x as z,  } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-    var x1: number = z;
-    import defaultBinding6, { m,  } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-    var x1: number = m;
-    
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.js b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.js
index 554fecf9116ca..d6be494a8d1ad 100644
--- a/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.js
+++ b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.js
@@ -23,22 +23,22 @@ var x1: number = m;
 
 
 //// [es6ImportDefaultBindingFollowedWithNamedImport_0.js]
-export var a = 10;
-export var x = a;
-export var m = a;
-export default {};
+exports.a = 10;
+exports.x = exports.a;
+exports.m = exports.a;
+exports.default = {};
 //// [es6ImportDefaultBindingFollowedWithNamedImport_1.js]
-import { a } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-var x1 = a;
-import { a as b } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-var x1 = b;
-import { x, a as y } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-var x1 = x;
-var x1 = y;
-import { x as z } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-var x1 = z;
-import { m } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
-var x1 = m;
+var es6ImportDefaultBindingFollowedWithNamedImport_0_1 = require("./es6ImportDefaultBindingFollowedWithNamedImport_0");
+var x1 = es6ImportDefaultBindingFollowedWithNamedImport_0_1.a;
+var es6ImportDefaultBindingFollowedWithNamedImport_0_2 = require("./es6ImportDefaultBindingFollowedWithNamedImport_0");
+var x1 = es6ImportDefaultBindingFollowedWithNamedImport_0_2.a;
+var es6ImportDefaultBindingFollowedWithNamedImport_0_3 = require("./es6ImportDefaultBindingFollowedWithNamedImport_0");
+var x1 = es6ImportDefaultBindingFollowedWithNamedImport_0_3.x;
+var x1 = es6ImportDefaultBindingFollowedWithNamedImport_0_3.a;
+var es6ImportDefaultBindingFollowedWithNamedImport_0_4 = require("./es6ImportDefaultBindingFollowedWithNamedImport_0");
+var x1 = es6ImportDefaultBindingFollowedWithNamedImport_0_4.x;
+var es6ImportDefaultBindingFollowedWithNamedImport_0_5 = require("./es6ImportDefaultBindingFollowedWithNamedImport_0");
+var x1 = es6ImportDefaultBindingFollowedWithNamedImport_0_5.m;
 
 
 //// [es6ImportDefaultBindingFollowedWithNamedImport_0.d.ts]
diff --git a/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.symbols b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.symbols
new file mode 100644
index 0000000000000..5da138f6c6242
--- /dev/null
+++ b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.symbols
@@ -0,0 +1,67 @@
+=== tests/cases/compiler/es6ImportDefaultBindingFollowedWithNamedImport_0.ts ===
+
+export var a = 10;
+>a : Symbol(a, Decl(es6ImportDefaultBindingFollowedWithNamedImport_0.ts, 1, 10))
+
+export var x = a;
+>x : Symbol(x, Decl(es6ImportDefaultBindingFollowedWithNamedImport_0.ts, 2, 10))
+>a : Symbol(a, Decl(es6ImportDefaultBindingFollowedWithNamedImport_0.ts, 1, 10))
+
+export var m = a;
+>m : Symbol(m, Decl(es6ImportDefaultBindingFollowedWithNamedImport_0.ts, 3, 10))
+>a : Symbol(a, Decl(es6ImportDefaultBindingFollowedWithNamedImport_0.ts, 1, 10))
+
+export default {};
+
+=== tests/cases/compiler/es6ImportDefaultBindingFollowedWithNamedImport_1.ts ===
+import defaultBinding1, { } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding1 : Symbol(defaultBinding1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 0, 6))
+
+import defaultBinding2, { a } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding2 : Symbol(defaultBinding2, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 1, 6))
+>a : Symbol(a, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 1, 25))
+
+var x1: number = a;
+>x1 : Symbol(x1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 2, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 4, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 6, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 7, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 9, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 11, 3))
+>a : Symbol(a, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 1, 25))
+
+import defaultBinding3, { a as b } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding3 : Symbol(defaultBinding3, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 3, 6))
+>a : Symbol(b, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 3, 25))
+>b : Symbol(b, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 3, 25))
+
+var x1: number = b;
+>x1 : Symbol(x1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 2, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 4, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 6, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 7, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 9, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 11, 3))
+>b : Symbol(b, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 3, 25))
+
+import defaultBinding4, { x, a as y } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding4 : Symbol(defaultBinding4, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 5, 6))
+>x : Symbol(x, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 5, 25))
+>a : Symbol(y, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 5, 28))
+>y : Symbol(y, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 5, 28))
+
+var x1: number = x;
+>x1 : Symbol(x1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 2, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 4, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 6, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 7, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 9, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 11, 3))
+>x : Symbol(x, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 5, 25))
+
+var x1: number = y;
+>x1 : Symbol(x1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 2, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 4, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 6, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 7, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 9, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 11, 3))
+>y : Symbol(y, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 5, 28))
+
+import defaultBinding5, { x as z,  } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding5 : Symbol(defaultBinding5, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 8, 6))
+>x : Symbol(z, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 8, 25))
+>z : Symbol(z, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 8, 25))
+
+var x1: number = z;
+>x1 : Symbol(x1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 2, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 4, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 6, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 7, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 9, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 11, 3))
+>z : Symbol(z, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 8, 25))
+
+import defaultBinding6, { m,  } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding6 : Symbol(defaultBinding6, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 10, 6))
+>m : Symbol(m, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 10, 25))
+
+var x1: number = m;
+>x1 : Symbol(x1, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 2, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 4, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 6, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 7, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 9, 3), Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 11, 3))
+>m : Symbol(m, Decl(es6ImportDefaultBindingFollowedWithNamedImport_1.ts, 10, 25))
+
diff --git a/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.types b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.types
new file mode 100644
index 0000000000000..fe0137403a982
--- /dev/null
+++ b/tests/baselines/reference/es6ImportDefaultBindingFollowedWithNamedImport.types
@@ -0,0 +1,69 @@
+=== tests/cases/compiler/es6ImportDefaultBindingFollowedWithNamedImport_0.ts ===
+
+export var a = 10;
+>a : number
+>10 : number
+
+export var x = a;
+>x : number
+>a : number
+
+export var m = a;
+>m : number
+>a : number
+
+export default {};
+>{} : {}
+
+=== tests/cases/compiler/es6ImportDefaultBindingFollowedWithNamedImport_1.ts ===
+import defaultBinding1, { } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding1 : {}
+
+import defaultBinding2, { a } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding2 : {}
+>a : number
+
+var x1: number = a;
+>x1 : number
+>a : number
+
+import defaultBinding3, { a as b } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding3 : {}
+>a : number
+>b : number
+
+var x1: number = b;
+>x1 : number
+>b : number
+
+import defaultBinding4, { x, a as y } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding4 : {}
+>x : number
+>a : number
+>y : number
+
+var x1: number = x;
+>x1 : number
+>x : number
+
+var x1: number = y;
+>x1 : number
+>y : number
+
+import defaultBinding5, { x as z,  } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding5 : {}
+>x : number
+>z : number
+
+var x1: number = z;
+>x1 : number
+>z : number
+
+import defaultBinding6, { m,  } from "./es6ImportDefaultBindingFollowedWithNamedImport_0";
+>defaultBinding6 : {}
+>m : number
+
+var x1: number = m;
+>x1 : number
+>m : number
+
diff --git a/tests/baselines/reference/es6ImportEqualsDeclaration.errors.txt b/tests/baselines/reference/es6ImportEqualsDeclaration.errors.txt
index d3351ee97b22c..7de5d7f0e3d0f 100644
--- a/tests/baselines/reference/es6ImportEqualsDeclaration.errors.txt
+++ b/tests/baselines/reference/es6ImportEqualsDeclaration.errors.txt
@@ -1,15 +1,15 @@
-tests/cases/compiler/client.ts(1,1): error TS1202: Import assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'import * as ns from "mod"', 'import {a} from "mod"' or 'import d from "mod"' instead.
-tests/cases/compiler/server.ts(3,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+tests/cases/compiler/client.ts(1,1): error TS1202: Import assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+tests/cases/compiler/server.ts(3,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
 
 
 ==== tests/cases/compiler/client.ts (1 errors) ====
     import a = require("server");
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS1202: Import assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'import * as ns from "mod"', 'import {a} from "mod"' or 'import d from "mod"' instead.
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
 ==== tests/cases/compiler/server.ts (1 errors) ====
     
     var a = 10;
     export = a;
     ~~~~~~~~~~~
-!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
+!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ImportNameSpaceImport.errors.txt b/tests/baselines/reference/es6ImportNameSpaceImport.errors.txt
deleted file mode 100644
index 67616662ca832..0000000000000
--- a/tests/baselines/reference/es6ImportNameSpaceImport.errors.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6ImportNameSpaceImport_0.ts (0 errors) ====
-    
-    export var a = 10;
-    
-==== tests/cases/compiler/es6ImportNameSpaceImport_1.ts (0 errors) ====
-    import * as nameSpaceBinding from "./es6ImportNameSpaceImport_0";
-    var x = nameSpaceBinding.a;
-    import * as nameSpaceBinding2 from "./es6ImportNameSpaceImport_0"; // elide this
-    
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ImportNameSpaceImport.js b/tests/baselines/reference/es6ImportNameSpaceImport.js
index 7498b8ee9e867..32bdd78b32995 100644
--- a/tests/baselines/reference/es6ImportNameSpaceImport.js
+++ b/tests/baselines/reference/es6ImportNameSpaceImport.js
@@ -11,9 +11,9 @@ import * as nameSpaceBinding2 from "./es6ImportNameSpaceImport_0"; // elide this
 
 
 //// [es6ImportNameSpaceImport_0.js]
-export var a = 10;
+exports.a = 10;
 //// [es6ImportNameSpaceImport_1.js]
-import * as nameSpaceBinding from "./es6ImportNameSpaceImport_0";
+var nameSpaceBinding = require("./es6ImportNameSpaceImport_0");
 var x = nameSpaceBinding.a;
 
 
diff --git a/tests/baselines/reference/es6ImportNameSpaceImport.symbols b/tests/baselines/reference/es6ImportNameSpaceImport.symbols
new file mode 100644
index 0000000000000..add2b792d4916
--- /dev/null
+++ b/tests/baselines/reference/es6ImportNameSpaceImport.symbols
@@ -0,0 +1,18 @@
+=== tests/cases/compiler/es6ImportNameSpaceImport_0.ts ===
+
+export var a = 10;
+>a : Symbol(a, Decl(es6ImportNameSpaceImport_0.ts, 1, 10))
+
+=== tests/cases/compiler/es6ImportNameSpaceImport_1.ts ===
+import * as nameSpaceBinding from "./es6ImportNameSpaceImport_0";
+>nameSpaceBinding : Symbol(nameSpaceBinding, Decl(es6ImportNameSpaceImport_1.ts, 0, 6))
+
+var x = nameSpaceBinding.a;
+>x : Symbol(x, Decl(es6ImportNameSpaceImport_1.ts, 1, 3))
+>nameSpaceBinding.a : Symbol(nameSpaceBinding.a, Decl(es6ImportNameSpaceImport_0.ts, 1, 10))
+>nameSpaceBinding : Symbol(nameSpaceBinding, Decl(es6ImportNameSpaceImport_1.ts, 0, 6))
+>a : Symbol(nameSpaceBinding.a, Decl(es6ImportNameSpaceImport_0.ts, 1, 10))
+
+import * as nameSpaceBinding2 from "./es6ImportNameSpaceImport_0"; // elide this
+>nameSpaceBinding2 : Symbol(nameSpaceBinding2, Decl(es6ImportNameSpaceImport_1.ts, 2, 6))
+
diff --git a/tests/baselines/reference/es6ImportNameSpaceImport.types b/tests/baselines/reference/es6ImportNameSpaceImport.types
new file mode 100644
index 0000000000000..56ee0c4d87a99
--- /dev/null
+++ b/tests/baselines/reference/es6ImportNameSpaceImport.types
@@ -0,0 +1,19 @@
+=== tests/cases/compiler/es6ImportNameSpaceImport_0.ts ===
+
+export var a = 10;
+>a : number
+>10 : number
+
+=== tests/cases/compiler/es6ImportNameSpaceImport_1.ts ===
+import * as nameSpaceBinding from "./es6ImportNameSpaceImport_0";
+>nameSpaceBinding : typeof nameSpaceBinding
+
+var x = nameSpaceBinding.a;
+>x : number
+>nameSpaceBinding.a : number
+>nameSpaceBinding : typeof nameSpaceBinding
+>a : number
+
+import * as nameSpaceBinding2 from "./es6ImportNameSpaceImport_0"; // elide this
+>nameSpaceBinding2 : typeof nameSpaceBinding
+
diff --git a/tests/baselines/reference/es6ImportNamedImport.errors.txt b/tests/baselines/reference/es6ImportNamedImport.errors.txt
deleted file mode 100644
index efcda1f536874..0000000000000
--- a/tests/baselines/reference/es6ImportNamedImport.errors.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6ImportNamedImport_0.ts (0 errors) ====
-    
-    export var a = 10;
-    export var x = a;
-    export var m = a;
-    export var a1 = 10;
-    export var x1 = 10;
-    export var z1 = 10;
-    export var z2 = 10;
-    export var aaaa = 10;
-    
-==== tests/cases/compiler/es6ImportNamedImport_1.ts (0 errors) ====
-    import { } from "./es6ImportNamedImport_0";
-    import { a } from "./es6ImportNamedImport_0";
-    var xxxx = a;
-    import { a as b } from "./es6ImportNamedImport_0";
-    var xxxx = b;
-    import { x, a as y } from "./es6ImportNamedImport_0";
-    var xxxx = x;
-    var xxxx = y;
-    import { x as z,  } from "./es6ImportNamedImport_0";
-    var xxxx = z;
-    import { m,  } from "./es6ImportNamedImport_0";
-    var xxxx = m;
-    import { a1, x1 } from "./es6ImportNamedImport_0";
-    var xxxx = a1;
-    var xxxx = x1;
-    import { a1 as a11, x1 as x11 } from "./es6ImportNamedImport_0";
-    var xxxx = a11;
-    var xxxx = x11;
-    import { z1 } from "./es6ImportNamedImport_0";
-    var z111 = z1;
-    import { z2 as z3 } from "./es6ImportNamedImport_0";
-    var z2 = z3; // z2 shouldn't give redeclare error
-    
-    // These are elided
-    import { aaaa } from "./es6ImportNamedImport_0";
-    // These are elided
-    import { aaaa as bbbb } from "./es6ImportNamedImport_0";
-    
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ImportNamedImport.js b/tests/baselines/reference/es6ImportNamedImport.js
index 6edb6ccb7cd8c..3ed7a6adeb03d 100644
--- a/tests/baselines/reference/es6ImportNamedImport.js
+++ b/tests/baselines/reference/es6ImportNamedImport.js
@@ -42,36 +42,36 @@ import { aaaa as bbbb } from "./es6ImportNamedImport_0";
 
 
 //// [es6ImportNamedImport_0.js]
-export var a = 10;
-export var x = a;
-export var m = a;
-export var a1 = 10;
-export var x1 = 10;
-export var z1 = 10;
-export var z2 = 10;
-export var aaaa = 10;
+exports.a = 10;
+exports.x = exports.a;
+exports.m = exports.a;
+exports.a1 = 10;
+exports.x1 = 10;
+exports.z1 = 10;
+exports.z2 = 10;
+exports.aaaa = 10;
 //// [es6ImportNamedImport_1.js]
-import { a } from "./es6ImportNamedImport_0";
-var xxxx = a;
-import { a as b } from "./es6ImportNamedImport_0";
-var xxxx = b;
-import { x, a as y } from "./es6ImportNamedImport_0";
-var xxxx = x;
-var xxxx = y;
-import { x as z } from "./es6ImportNamedImport_0";
-var xxxx = z;
-import { m } from "./es6ImportNamedImport_0";
-var xxxx = m;
-import { a1, x1 } from "./es6ImportNamedImport_0";
-var xxxx = a1;
-var xxxx = x1;
-import { a1 as a11, x1 as x11 } from "./es6ImportNamedImport_0";
-var xxxx = a11;
-var xxxx = x11;
-import { z1 } from "./es6ImportNamedImport_0";
-var z111 = z1;
-import { z2 as z3 } from "./es6ImportNamedImport_0";
-var z2 = z3; // z2 shouldn't give redeclare error
+var es6ImportNamedImport_0_1 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_1.a;
+var es6ImportNamedImport_0_2 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_2.a;
+var es6ImportNamedImport_0_3 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_3.x;
+var xxxx = es6ImportNamedImport_0_3.a;
+var es6ImportNamedImport_0_4 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_4.x;
+var es6ImportNamedImport_0_5 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_5.m;
+var es6ImportNamedImport_0_6 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_6.a1;
+var xxxx = es6ImportNamedImport_0_6.x1;
+var es6ImportNamedImport_0_7 = require("./es6ImportNamedImport_0");
+var xxxx = es6ImportNamedImport_0_7.a1;
+var xxxx = es6ImportNamedImport_0_7.x1;
+var es6ImportNamedImport_0_8 = require("./es6ImportNamedImport_0");
+var z111 = es6ImportNamedImport_0_8.z1;
+var es6ImportNamedImport_0_9 = require("./es6ImportNamedImport_0");
+var z2 = es6ImportNamedImport_0_9.z2; // z2 shouldn't give redeclare error
 
 
 //// [es6ImportNamedImport_0.d.ts]
diff --git a/tests/baselines/reference/es6ImportNamedImport.symbols b/tests/baselines/reference/es6ImportNamedImport.symbols
new file mode 100644
index 0000000000000..0d30db6113fe4
--- /dev/null
+++ b/tests/baselines/reference/es6ImportNamedImport.symbols
@@ -0,0 +1,123 @@
+=== tests/cases/compiler/es6ImportNamedImport_0.ts ===
+
+export var a = 10;
+>a : Symbol(a, Decl(es6ImportNamedImport_0.ts, 1, 10))
+
+export var x = a;
+>x : Symbol(x, Decl(es6ImportNamedImport_0.ts, 2, 10))
+>a : Symbol(a, Decl(es6ImportNamedImport_0.ts, 1, 10))
+
+export var m = a;
+>m : Symbol(m, Decl(es6ImportNamedImport_0.ts, 3, 10))
+>a : Symbol(a, Decl(es6ImportNamedImport_0.ts, 1, 10))
+
+export var a1 = 10;
+>a1 : Symbol(a1, Decl(es6ImportNamedImport_0.ts, 4, 10))
+
+export var x1 = 10;
+>x1 : Symbol(x1, Decl(es6ImportNamedImport_0.ts, 5, 10))
+
+export var z1 = 10;
+>z1 : Symbol(z1, Decl(es6ImportNamedImport_0.ts, 6, 10))
+
+export var z2 = 10;
+>z2 : Symbol(z2, Decl(es6ImportNamedImport_0.ts, 7, 10))
+
+export var aaaa = 10;
+>aaaa : Symbol(aaaa, Decl(es6ImportNamedImport_0.ts, 8, 10))
+
+=== tests/cases/compiler/es6ImportNamedImport_1.ts ===
+import { } from "./es6ImportNamedImport_0";
+import { a } from "./es6ImportNamedImport_0";
+>a : Symbol(a, Decl(es6ImportNamedImport_1.ts, 1, 8))
+
+var xxxx = a;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>a : Symbol(a, Decl(es6ImportNamedImport_1.ts, 1, 8))
+
+import { a as b } from "./es6ImportNamedImport_0";
+>a : Symbol(b, Decl(es6ImportNamedImport_1.ts, 3, 8))
+>b : Symbol(b, Decl(es6ImportNamedImport_1.ts, 3, 8))
+
+var xxxx = b;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>b : Symbol(b, Decl(es6ImportNamedImport_1.ts, 3, 8))
+
+import { x, a as y } from "./es6ImportNamedImport_0";
+>x : Symbol(x, Decl(es6ImportNamedImport_1.ts, 5, 8))
+>a : Symbol(y, Decl(es6ImportNamedImport_1.ts, 5, 11))
+>y : Symbol(y, Decl(es6ImportNamedImport_1.ts, 5, 11))
+
+var xxxx = x;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>x : Symbol(x, Decl(es6ImportNamedImport_1.ts, 5, 8))
+
+var xxxx = y;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>y : Symbol(y, Decl(es6ImportNamedImport_1.ts, 5, 11))
+
+import { x as z,  } from "./es6ImportNamedImport_0";
+>x : Symbol(z, Decl(es6ImportNamedImport_1.ts, 8, 8))
+>z : Symbol(z, Decl(es6ImportNamedImport_1.ts, 8, 8))
+
+var xxxx = z;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>z : Symbol(z, Decl(es6ImportNamedImport_1.ts, 8, 8))
+
+import { m,  } from "./es6ImportNamedImport_0";
+>m : Symbol(m, Decl(es6ImportNamedImport_1.ts, 10, 8))
+
+var xxxx = m;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>m : Symbol(m, Decl(es6ImportNamedImport_1.ts, 10, 8))
+
+import { a1, x1 } from "./es6ImportNamedImport_0";
+>a1 : Symbol(a1, Decl(es6ImportNamedImport_1.ts, 12, 8))
+>x1 : Symbol(x1, Decl(es6ImportNamedImport_1.ts, 12, 12))
+
+var xxxx = a1;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>a1 : Symbol(a1, Decl(es6ImportNamedImport_1.ts, 12, 8))
+
+var xxxx = x1;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>x1 : Symbol(x1, Decl(es6ImportNamedImport_1.ts, 12, 12))
+
+import { a1 as a11, x1 as x11 } from "./es6ImportNamedImport_0";
+>a1 : Symbol(a11, Decl(es6ImportNamedImport_1.ts, 15, 8))
+>a11 : Symbol(a11, Decl(es6ImportNamedImport_1.ts, 15, 8))
+>x1 : Symbol(x11, Decl(es6ImportNamedImport_1.ts, 15, 19))
+>x11 : Symbol(x11, Decl(es6ImportNamedImport_1.ts, 15, 19))
+
+var xxxx = a11;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>a11 : Symbol(a11, Decl(es6ImportNamedImport_1.ts, 15, 8))
+
+var xxxx = x11;
+>xxxx : Symbol(xxxx, Decl(es6ImportNamedImport_1.ts, 2, 3), Decl(es6ImportNamedImport_1.ts, 4, 3), Decl(es6ImportNamedImport_1.ts, 6, 3), Decl(es6ImportNamedImport_1.ts, 7, 3), Decl(es6ImportNamedImport_1.ts, 9, 3), Decl(es6ImportNamedImport_1.ts, 11, 3), Decl(es6ImportNamedImport_1.ts, 13, 3), Decl(es6ImportNamedImport_1.ts, 14, 3), Decl(es6ImportNamedImport_1.ts, 16, 3), Decl(es6ImportNamedImport_1.ts, 17, 3))
+>x11 : Symbol(x11, Decl(es6ImportNamedImport_1.ts, 15, 19))
+
+import { z1 } from "./es6ImportNamedImport_0";
+>z1 : Symbol(z1, Decl(es6ImportNamedImport_1.ts, 18, 8))
+
+var z111 = z1;
+>z111 : Symbol(z111, Decl(es6ImportNamedImport_1.ts, 19, 3))
+>z1 : Symbol(z1, Decl(es6ImportNamedImport_1.ts, 18, 8))
+
+import { z2 as z3 } from "./es6ImportNamedImport_0";
+>z2 : Symbol(z3, Decl(es6ImportNamedImport_1.ts, 20, 8))
+>z3 : Symbol(z3, Decl(es6ImportNamedImport_1.ts, 20, 8))
+
+var z2 = z3; // z2 shouldn't give redeclare error
+>z2 : Symbol(z2, Decl(es6ImportNamedImport_1.ts, 21, 3))
+>z3 : Symbol(z3, Decl(es6ImportNamedImport_1.ts, 20, 8))
+
+// These are elided
+import { aaaa } from "./es6ImportNamedImport_0";
+>aaaa : Symbol(aaaa, Decl(es6ImportNamedImport_1.ts, 24, 8))
+
+// These are elided
+import { aaaa as bbbb } from "./es6ImportNamedImport_0";
+>aaaa : Symbol(bbbb, Decl(es6ImportNamedImport_1.ts, 26, 8))
+>bbbb : Symbol(bbbb, Decl(es6ImportNamedImport_1.ts, 26, 8))
+
diff --git a/tests/baselines/reference/es6ImportNamedImport.types b/tests/baselines/reference/es6ImportNamedImport.types
new file mode 100644
index 0000000000000..bd7c43d70319b
--- /dev/null
+++ b/tests/baselines/reference/es6ImportNamedImport.types
@@ -0,0 +1,129 @@
+=== tests/cases/compiler/es6ImportNamedImport_0.ts ===
+
+export var a = 10;
+>a : number
+>10 : number
+
+export var x = a;
+>x : number
+>a : number
+
+export var m = a;
+>m : number
+>a : number
+
+export var a1 = 10;
+>a1 : number
+>10 : number
+
+export var x1 = 10;
+>x1 : number
+>10 : number
+
+export var z1 = 10;
+>z1 : number
+>10 : number
+
+export var z2 = 10;
+>z2 : number
+>10 : number
+
+export var aaaa = 10;
+>aaaa : number
+>10 : number
+
+=== tests/cases/compiler/es6ImportNamedImport_1.ts ===
+import { } from "./es6ImportNamedImport_0";
+import { a } from "./es6ImportNamedImport_0";
+>a : number
+
+var xxxx = a;
+>xxxx : number
+>a : number
+
+import { a as b } from "./es6ImportNamedImport_0";
+>a : number
+>b : number
+
+var xxxx = b;
+>xxxx : number
+>b : number
+
+import { x, a as y } from "./es6ImportNamedImport_0";
+>x : number
+>a : number
+>y : number
+
+var xxxx = x;
+>xxxx : number
+>x : number
+
+var xxxx = y;
+>xxxx : number
+>y : number
+
+import { x as z,  } from "./es6ImportNamedImport_0";
+>x : number
+>z : number
+
+var xxxx = z;
+>xxxx : number
+>z : number
+
+import { m,  } from "./es6ImportNamedImport_0";
+>m : number
+
+var xxxx = m;
+>xxxx : number
+>m : number
+
+import { a1, x1 } from "./es6ImportNamedImport_0";
+>a1 : number
+>x1 : number
+
+var xxxx = a1;
+>xxxx : number
+>a1 : number
+
+var xxxx = x1;
+>xxxx : number
+>x1 : number
+
+import { a1 as a11, x1 as x11 } from "./es6ImportNamedImport_0";
+>a1 : number
+>a11 : number
+>x1 : number
+>x11 : number
+
+var xxxx = a11;
+>xxxx : number
+>a11 : number
+
+var xxxx = x11;
+>xxxx : number
+>x11 : number
+
+import { z1 } from "./es6ImportNamedImport_0";
+>z1 : number
+
+var z111 = z1;
+>z111 : number
+>z1 : number
+
+import { z2 as z3 } from "./es6ImportNamedImport_0";
+>z2 : number
+>z3 : number
+
+var z2 = z3; // z2 shouldn't give redeclare error
+>z2 : number
+>z3 : number
+
+// These are elided
+import { aaaa } from "./es6ImportNamedImport_0";
+>aaaa : number
+
+// These are elided
+import { aaaa as bbbb } from "./es6ImportNamedImport_0";
+>aaaa : number
+>bbbb : number
+
diff --git a/tests/baselines/reference/es6ImportNamedImportInExportAssignment.errors.txt b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.errors.txt
deleted file mode 100644
index fec4d18215802..0000000000000
--- a/tests/baselines/reference/es6ImportNamedImportInExportAssignment.errors.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-tests/cases/compiler/es6ImportNamedImportInExportAssignment_1.ts(2,1): error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6ImportNamedImportInExportAssignment_0.ts (0 errors) ====
-    
-    export var a = 10;
-    
-==== tests/cases/compiler/es6ImportNamedImportInExportAssignment_1.ts (1 errors) ====
-    import { a } from "./es6ImportNamedImportInExportAssignment_0";
-    export = a;
-    ~~~~~~~~~~~
-!!! error TS1203: Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead.
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ImportNamedImportInExportAssignment.js b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.js
index 44ac0d188b327..5bdbd89df0786 100644
--- a/tests/baselines/reference/es6ImportNamedImportInExportAssignment.js
+++ b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.js
@@ -9,9 +9,10 @@ import { a } from "./es6ImportNamedImportInExportAssignment_0";
 export = a;
 
 //// [es6ImportNamedImportInExportAssignment_0.js]
-export var a = 10;
+exports.a = 10;
 //// [es6ImportNamedImportInExportAssignment_1.js]
-import { a } from "./es6ImportNamedImportInExportAssignment_0";
+var es6ImportNamedImportInExportAssignment_0_1 = require("./es6ImportNamedImportInExportAssignment_0");
+module.exports = es6ImportNamedImportInExportAssignment_0_1.a;
 
 
 //// [es6ImportNamedImportInExportAssignment_0.d.ts]
diff --git a/tests/baselines/reference/es6ImportNamedImportInExportAssignment.symbols b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.symbols
new file mode 100644
index 0000000000000..03ca0740f08a9
--- /dev/null
+++ b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.symbols
@@ -0,0 +1,12 @@
+=== tests/cases/compiler/es6ImportNamedImportInExportAssignment_0.ts ===
+
+export var a = 10;
+>a : Symbol(a, Decl(es6ImportNamedImportInExportAssignment_0.ts, 1, 10))
+
+=== tests/cases/compiler/es6ImportNamedImportInExportAssignment_1.ts ===
+import { a } from "./es6ImportNamedImportInExportAssignment_0";
+>a : Symbol(a, Decl(es6ImportNamedImportInExportAssignment_1.ts, 0, 8))
+
+export = a;
+>a : Symbol(a, Decl(es6ImportNamedImportInExportAssignment_1.ts, 0, 8))
+
diff --git a/tests/baselines/reference/es6ImportNamedImportInExportAssignment.types b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.types
new file mode 100644
index 0000000000000..09023b6dd8097
--- /dev/null
+++ b/tests/baselines/reference/es6ImportNamedImportInExportAssignment.types
@@ -0,0 +1,13 @@
+=== tests/cases/compiler/es6ImportNamedImportInExportAssignment_0.ts ===
+
+export var a = 10;
+>a : number
+>10 : number
+
+=== tests/cases/compiler/es6ImportNamedImportInExportAssignment_1.ts ===
+import { a } from "./es6ImportNamedImportInExportAssignment_0";
+>a : number
+
+export = a;
+>a : number
+
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.errors.txt b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.errors.txt
deleted file mode 100644
index 9592a9f899e64..0000000000000
--- a/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.errors.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6ModuleWithModuleGenTargetAmd.ts (0 errors) ====
-    export class A
-    {
-        constructor ()
-        {
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.js b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.js
index 8757bd1c88f52..dec8de1e36ee1 100644
--- a/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.js
+++ b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.js
@@ -12,10 +12,13 @@ export class A
 }
 
 //// [es6ModuleWithModuleGenTargetAmd.js]
-export class A {
-    constructor() {
+define(["require", "exports"], function (require, exports) {
+    class A {
+        constructor() {
+        }
+        B() {
+            return 42;
+        }
     }
-    B() {
-        return 42;
-    }
-}
+    exports.A = A;
+});
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.symbols b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.symbols
new file mode 100644
index 0000000000000..24367cc28ad39
--- /dev/null
+++ b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.symbols
@@ -0,0 +1,14 @@
+=== tests/cases/compiler/es6ModuleWithModuleGenTargetAmd.ts ===
+export class A
+>A : Symbol(A, Decl(es6ModuleWithModuleGenTargetAmd.ts, 0, 0))
+{
+    constructor ()
+    {
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6ModuleWithModuleGenTargetAmd.ts, 4, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.types b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.types
new file mode 100644
index 0000000000000..067ceb005e8e2
--- /dev/null
+++ b/tests/baselines/reference/es6ModuleWithModuleGenTargetAmd.types
@@ -0,0 +1,15 @@
+=== tests/cases/compiler/es6ModuleWithModuleGenTargetAmd.ts ===
+export class A
+>A : A
+{
+    constructor ()
+    {
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.errors.txt b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.errors.txt
deleted file mode 100644
index b740104009982..0000000000000
--- a/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.errors.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/es6ModuleWithModuleGenTargetCommonjs.ts (0 errors) ====
-    export class A
-    {
-        constructor ()
-        {
-        }
-    
-        public B()
-        {
-            return 42;
-        }
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.js b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.js
index 2df98e20826aa..36e66cb572135 100644
--- a/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.js
+++ b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.js
@@ -12,10 +12,11 @@ export class A
 }
 
 //// [es6ModuleWithModuleGenTargetCommonjs.js]
-export class A {
+class A {
     constructor() {
     }
     B() {
         return 42;
     }
 }
+exports.A = A;
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.symbols b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.symbols
new file mode 100644
index 0000000000000..4a84c00c48ffe
--- /dev/null
+++ b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.symbols
@@ -0,0 +1,14 @@
+=== tests/cases/compiler/es6ModuleWithModuleGenTargetCommonjs.ts ===
+export class A
+>A : Symbol(A, Decl(es6ModuleWithModuleGenTargetCommonjs.ts, 0, 0))
+{
+    constructor ()
+    {
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6ModuleWithModuleGenTargetCommonjs.ts, 4, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.types b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.types
new file mode 100644
index 0000000000000..58f0f89f955d8
--- /dev/null
+++ b/tests/baselines/reference/es6ModuleWithModuleGenTargetCommonjs.types
@@ -0,0 +1,15 @@
+=== tests/cases/compiler/es6ModuleWithModuleGenTargetCommonjs.ts ===
+export class A
+>A : A
+{
+    constructor ()
+    {
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/es6modulekind.js b/tests/baselines/reference/es6modulekind.js
new file mode 100644
index 0000000000000..96b315389d10e
--- /dev/null
+++ b/tests/baselines/reference/es6modulekind.js
@@ -0,0 +1,23 @@
+//// [es6modulekind.ts]
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}
+
+//// [es6modulekind.js]
+export default class A {
+    constructor() {
+    }
+    B() {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6modulekind.symbols b/tests/baselines/reference/es6modulekind.symbols
new file mode 100644
index 0000000000000..0b5eeb2a6fb07
--- /dev/null
+++ b/tests/baselines/reference/es6modulekind.symbols
@@ -0,0 +1,16 @@
+=== tests/cases/compiler/es6modulekind.ts ===
+
+export default class A
+>A : Symbol(A, Decl(es6modulekind.ts, 0, 0))
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : Symbol(B, Decl(es6modulekind.ts, 6, 5))
+    {
+        return 42;
+    }
+}
diff --git a/tests/baselines/reference/es6modulekind.types b/tests/baselines/reference/es6modulekind.types
new file mode 100644
index 0000000000000..d7fde0c7d4426
--- /dev/null
+++ b/tests/baselines/reference/es6modulekind.types
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/es6modulekind.ts ===
+
+export default class A
+>A : A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+>B : () => number
+    {
+        return 42;
+>42 : number
+    }
+}
diff --git a/tests/baselines/reference/systemModule1.errors.txt b/tests/baselines/reference/systemModule1.errors.txt
deleted file mode 100644
index 18b64607455e3..0000000000000
--- a/tests/baselines/reference/systemModule1.errors.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-
-
-!!! error TS1204: Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher.
-==== tests/cases/compiler/systemModule1.ts (0 errors) ====
-    
-    export var x = 1;
\ No newline at end of file
diff --git a/tests/baselines/reference/systemModule1.js b/tests/baselines/reference/systemModule1.js
index 9731106471c84..573a7ae04c883 100644
--- a/tests/baselines/reference/systemModule1.js
+++ b/tests/baselines/reference/systemModule1.js
@@ -3,4 +3,12 @@
 export var x = 1;
 
 //// [systemModule1.js]
-export var x = 1;
+System.register([], function(exports_1) {
+    var x;
+    return {
+        setters:[],
+        execute: function() {
+            x = 1;
+        }
+    }
+});
diff --git a/tests/baselines/reference/systemModule1.symbols b/tests/baselines/reference/systemModule1.symbols
new file mode 100644
index 0000000000000..d6293c21fd9a9
--- /dev/null
+++ b/tests/baselines/reference/systemModule1.symbols
@@ -0,0 +1,5 @@
+=== tests/cases/compiler/systemModule1.ts ===
+
+export var x = 1;
+>x : Symbol(x, Decl(systemModule1.ts, 1, 10))
+
diff --git a/tests/baselines/reference/systemModule1.types b/tests/baselines/reference/systemModule1.types
new file mode 100644
index 0000000000000..2adf73d116f88
--- /dev/null
+++ b/tests/baselines/reference/systemModule1.types
@@ -0,0 +1,6 @@
+=== tests/cases/compiler/systemModule1.ts ===
+
+export var x = 1;
+>x : number
+>1 : number
+
diff --git a/tests/cases/compiler/es5andes6module.ts b/tests/cases/compiler/es5andes6module.ts
new file mode 100644
index 0000000000000..0fbff3c23d25d
--- /dev/null
+++ b/tests/cases/compiler/es5andes6module.ts
@@ -0,0 +1,17 @@
+// @target: ES5
+// @sourcemap: false
+// @declaration: false
+// @module: es6
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}
diff --git a/tests/cases/compiler/es6modulekind.ts b/tests/cases/compiler/es6modulekind.ts
new file mode 100644
index 0000000000000..0722e1690a3c8
--- /dev/null
+++ b/tests/cases/compiler/es6modulekind.ts
@@ -0,0 +1,17 @@
+// @target: ES6
+// @sourcemap: false
+// @declaration: false
+// @module: es6
+
+export default class A
+{
+    constructor ()
+    {
+
+    }
+
+    public B()
+    {
+        return 42;
+    }
+}
\ No newline at end of file