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diff --git a/‎src/compiler/transformers/module/module.ts
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+7-1Lines changed: 7 additions & 1 deletion b/‎src/compiler/transformers/module/module.ts
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+7-1Lines changed: 7 additions & 1 deletion
diff --git a/‎src/testRunner/unittests/tsserver/compileOnSave.ts
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+1-1Lines changed: 1 addition & 1 deletion b/‎src/testRunner/unittests/tsserver/compileOnSave.ts
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diff --git a/‎src/testRunner/unittests/tsserver/projectReferenceCompileOnSave.ts
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+2-1Lines changed: 2 additions & 1 deletion b/‎src/testRunner/unittests/tsserver/projectReferenceCompileOnSave.ts
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diff --git a/‎tests/baselines/reference/APISample_compile.js
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+1Lines changed: 1 addition & 0 deletions b/‎tests/baselines/reference/APISample_compile.js
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diff --git a/‎tests/baselines/reference/APISample_linter.js
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+1Lines changed: 1 addition & 0 deletions b/‎tests/baselines/reference/APISample_linter.js
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diff --git a/‎tests/baselines/reference/APISample_parseConfig.js
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diff --git a/‎tests/baselines/reference/ExportAssignment7.js
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diff --git a/‎tests/baselines/reference/ExportAssignment8.js
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+1Lines changed: 1 addition & 0 deletions b/‎tests/baselines/reference/ExportAssignment8.js
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diff --git a/‎tests/baselines/reference/TwoInternalModulesThatMergeEachWithExportedLocalVarsOfTheSameName.js
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+2Lines changed: 2 additions & 0 deletions b/‎tests/baselines/reference/TwoInternalModulesThatMergeEachWithExportedLocalVarsOfTheSameName.js
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diff --git a/‎tests/baselines/reference/aliasAssignments.js
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+1Lines changed: 1 addition & 0 deletions b/‎tests/baselines/reference/aliasAssignments.js
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@@ -96,6 +96,9 @@ namespace ts {
             if (shouldEmitUnderscoreUnderscoreESModule()) {
                 append(statements, createUnderscoreUnderscoreESModule());
             }
+            if (length(currentModuleInfo.exportedNames)) {
+                append(statements, createExpressionStatement(reduceLeft(currentModuleInfo.exportedNames, (prev, nextId) => createAssignment(createPropertyAccess(createIdentifier("exports"), createIdentifier(idText(nextId))), prev), createVoidZero() as Expression)));
+            }
 
             append(statements, visitNode(currentModuleInfo.externalHelpersImportDeclaration, sourceElementVisitor, isStatement));
             addRange(statements, visitNodes(node.statements, sourceElementVisitor, isStatement, statementOffset));
@@ -414,6 +417,9 @@ namespace ts {
             if (shouldEmitUnderscoreUnderscoreESModule()) {
                 append(statements, createUnderscoreUnderscoreESModule());
             }
+            if (length(currentModuleInfo.exportedNames)) {
+                append(statements, createExpressionStatement(reduceLeft(currentModuleInfo.exportedNames, (prev, nextId) => createAssignment(createPropertyAccess(createIdentifier("exports"), createIdentifier(idText(nextId))), prev), createVoidZero() as Expression)));
+            }
 
             // Visit each statement of the module body.
             append(statements, visitNode(currentModuleInfo.externalHelpersImportDeclaration, sourceElementVisitor, isStatement));
@@ -1188,7 +1194,7 @@ namespace ts {
 
                         variables = append(variables, variable);
                     }
-                    else {
+                    else if (variable.initializer) {
                         expressions = append(expressions, transformInitializedVariable(variable));
                     }
                 }
 
@@ -714,7 +714,7 @@ namespace ts.projectSystem {
 
             const expectedEmittedFileName = "/a/b/f1.js";
             assert.isTrue(host.fileExists(expectedEmittedFileName));
-            assert.equal(host.readFile(expectedEmittedFileName), `"use strict";\r\nexports.__esModule = true;\r\nfunction Foo() { return 10; }\r\nexports.Foo = Foo;\r\n`);
+            assert.equal(host.readFile(expectedEmittedFileName), `"use strict";\r\nexports.__esModule = true;\r\nexports.Foo = void 0;\r\nfunction Foo() { return 10; }\r\nexports.Foo = Foo;\r\n`);
         });
 
         it("shoud not emit js files in external projects", () => {
 
@@ -236,7 +236,7 @@ exports.fn3 = fn3;`;
                 expectedFiles: [{
                     path: `${usageLocation}/usage.js`,
                     content: `"use strict";
-exports.__esModule = true;
+exports.__esModule = true;${appendJsText === changeJs ? "\nexports.fn3 = void 0;" : ""}
 var fns_1 = require("../decls/fns");
 fns_1.fn1();
 fns_1.fn2();
@@ -286,6 +286,7 @@ ${appendJs}`
                         path: `${dependecyLocation}/fns.js`,
                         content: `"use strict";
 exports.__esModule = true;
+${appendJsText === changeJs ? "exports.fn3 = " : ""}exports.fn2 = exports.fn1 = void 0;
 function fn1() { }
 exports.fn1 = fn1;
 function fn2() { }
 
@@ -53,6 +53,7 @@ compile(process.argv.slice(2), {
  *       Please log a "breaking change" issue for any API breaking change affecting this issue
  */
 exports.__esModule = true;
+exports.compile = void 0;
 var ts = require("typescript");
 function compile(fileNames, options) {
     var program = ts.createProgram(fileNames, options);
 
@@ -78,6 +78,7 @@ fileNames.forEach(fileName => {
  *       Please log a "breaking change" issue for any API breaking change affecting this issue
  */
 exports.__esModule = true;
+exports.delint = void 0;
 var ts = require("typescript");
 function delint(sourceFile) {
     delintNode(sourceFile);
 
@@ -50,6 +50,7 @@ export function createProgram(rootFiles: string[], compilerOptionsJson: string):
  *       Please log a "breaking change" issue for any API breaking change affecting this issue
  */
 exports.__esModule = true;
+exports.createProgram = void 0;
 var ts = require("typescript");
 function printError(error) {
     if (!error) {
 
@@ -6,6 +6,7 @@ export = B;
 
 //// [ExportAssignment7.js]
 "use strict";
+exports.C = void 0;
 var C = /** @class */ (function () {
     function C() {
     }
 
@@ -6,6 +6,7 @@ export class C {
 
 //// [ExportAssignment8.js]
 "use strict";
+exports.C = void 0;
 var C = /** @class */ (function () {
     function C() {
     }
 
@@ -32,6 +32,7 @@ export module A {
 //// [part1.js]
 "use strict";
 exports.__esModule = true;
+exports.A = void 0;
 var A;
 (function (A) {
     var Utils;
@@ -46,6 +47,7 @@ var A;
 //// [part2.js]
 "use strict";
 exports.__esModule = true;
+exports.A = void 0;
 var A;
 (function (A) {
     // collision with 'Origin' var in other part of merged module
 
@@ -16,6 +16,7 @@ y = moduleA; // should be error
 //// [aliasAssignments_moduleA.js]
 "use strict";
 exports.__esModule = true;
+exports.someClass = void 0;
 var someClass = /** @class */ (function () {
     function someClass() {
     }
Original file line number	Diff line number	Diff line change
`@@ -96,6 +96,9 @@ namespace ts {`
`96`	`96`	`if (shouldEmitUnderscoreUnderscoreESModule()) {`
`97`	`97`	`append(statements, createUnderscoreUnderscoreESModule());`
`98`	`98`	`}`
	`99`	`+ if (length(currentModuleInfo.exportedNames)) {`
	`100`	`+ append(statements, createExpressionStatement(reduceLeft(currentModuleInfo.exportedNames, (prev, nextId) => createAssignment(createPropertyAccess(createIdentifier("exports"), createIdentifier(idText(nextId))), prev), createVoidZero() as Expression)));`
	`101`	`+ }`
`99`	`102`
`100`	`103`	`append(statements, visitNode(currentModuleInfo.externalHelpersImportDeclaration, sourceElementVisitor, isStatement));`
`101`	`104`	`addRange(statements, visitNodes(node.statements, sourceElementVisitor, isStatement, statementOffset));`
`@@ -414,6 +417,9 @@ namespace ts {`
`414`	`417`	`if (shouldEmitUnderscoreUnderscoreESModule()) {`
`415`	`418`	`append(statements, createUnderscoreUnderscoreESModule());`
`416`	`419`	`}`
	`420`	`+ if (length(currentModuleInfo.exportedNames)) {`
	`421`	`+ append(statements, createExpressionStatement(reduceLeft(currentModuleInfo.exportedNames, (prev, nextId) => createAssignment(createPropertyAccess(createIdentifier("exports"), createIdentifier(idText(nextId))), prev), createVoidZero() as Expression)));`
	`422`	`+ }`
`417`	`423`
`418`	`424`	`// Visit each statement of the module body.`
`419`	`425`	`append(statements, visitNode(currentModuleInfo.externalHelpersImportDeclaration, sourceElementVisitor, isStatement));`
`@@ -1188,7 +1194,7 @@ namespace ts {`
`1188`	`1194`
`1189`	`1195`	`variables = append(variables, variable);`
`1190`	`1196`	`}`
`1191`		`- else {`
	`1197`	`+ else if (variable.initializer) {`
`1192`	`1198`	`expressions = append(expressions, transformInitializedVariable(variable));`
`1193`	`1199`	`}`
`1194`	`1200`	`}`
Original file line number	Diff line number	Diff line change
`@@ -6,6 +6,7 @@ export = B;`
`6`	`6`
`7`	`7`	`//// [ExportAssignment7.js]`
`8`	`8`	`"use strict";`
	`9`	`+exports.C = void 0;`
`9`	`10`	`var C = /** @class */ (function () {`
`10`	`11`	`function C() {`
`11`	`12`	`}`
Original file line number	Diff line number	Diff line change
`@@ -6,6 +6,7 @@ export class C {`
`6`	`6`
`7`	`7`	`//// [ExportAssignment8.js]`
`8`	`8`	`"use strict";`
	`9`	`+exports.C = void 0;`
`9`	`10`	`var C = /** @class */ (function () {`
`10`	`11`	`function C() {`
`11`	`12`	`}`
Original file line number	Diff line number	Diff line change
`@@ -16,6 +16,7 @@ y = moduleA; // should be error`
`16`	`16`	`//// [aliasAssignments_moduleA.js]`
`17`	`17`	`"use strict";`
`18`	`18`	`exports.__esModule = true;`
	`19`	`+exports.someClass = void 0;`
`19`	`20`	`var someClass = /** @class */ (function () {`
`20`	`21`	`function someClass() {`
`21`	`22`	`}`