diff --git a/crates/swc/tests/tsc-references/AmbientModuleAndNonAmbientClassWithSameNameAndCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/AmbientModuleAndNonAmbientClassWithSameNameAndCommonRoot.2.minified.js
index 915991143645..5d1299b45041 100644
--- a/crates/swc/tests/tsc-references/AmbientModuleAndNonAmbientClassWithSameNameAndCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/AmbientModuleAndNonAmbientClassWithSameNameAndCommonRoot.2.minified.js
@@ -1,5 +1,9 @@
 //// [module.d.ts]
 //// [classPoint.ts]
+var A;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
+(A || (A = {})).Point = function Point(x, y) {
+    _class_call_check(this, Point), this.x = x, this.y = y;
+};
 //// [test.ts]
 A.Point.Origin, new A.Point(0, 0);
diff --git a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndExportedFunctionThatShareAName.2.minified.js b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndExportedFunctionThatShareAName.2.minified.js
index 62b6bd612ccb..9425592826c9 100644
--- a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndExportedFunctionThatShareAName.2.minified.js
+++ b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndExportedFunctionThatShareAName.2.minified.js
@@ -1,6 +1,6 @@
 //// [ClassAndModuleThatMergeWithStaticFunctionAndExportedFunctionThatShareAName.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var A, Point, Point1 = function() {
+var A, Point, A1, Point1 = function() {
     function Point(x, y) {
         _class_call_check(this, Point), this.x = x, this.y = y;
     }
@@ -13,7 +13,7 @@ var A, Point, Point1 = function() {
 }();
 (Point1 || (Point1 = {})).Origin = function() {
     return null;
-}, A = {}, Point = function() {
+}, A = A1 || (A1 = {}), Point = function() {
     function Point(x, y) {
         _class_call_check(this, Point), this.x = x, this.y = y;
     }
diff --git a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndNonExportedFunctionThatShareAName.2.minified.js b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndNonExportedFunctionThatShareAName.2.minified.js
index 21e924b4b1b8..7f6480df768f 100644
--- a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndNonExportedFunctionThatShareAName.2.minified.js
+++ b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticFunctionAndNonExportedFunctionThatShareAName.2.minified.js
@@ -1,6 +1,6 @@
 //// [ClassAndModuleThatMergeWithStaticFunctionAndNonExportedFunctionThatShareAName.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var A, Point, Point1 = function() {
+var A, Point, A1, Point1 = function() {
     function Point(x, y) {
         _class_call_check(this, Point), this.x = x, this.y = y;
     }
@@ -11,7 +11,7 @@ var A, Point, Point1 = function() {
         };
     }, Point;
 }();
-Point1 || (Point1 = {}), A = {}, Point = function() {
+Point1 || (Point1 = {}), A = A1 || (A1 = {}), Point = function() {
     function Point(x, y) {
         _class_call_check(this, Point), this.x = x, this.y = y;
     }
diff --git a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndExportedVarThatShareAName.2.minified.js b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndExportedVarThatShareAName.2.minified.js
index 31b7e7114e70..e4c948b4f7b1 100644
--- a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndExportedVarThatShareAName.2.minified.js
+++ b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndExportedVarThatShareAName.2.minified.js
@@ -1,12 +1,12 @@
 //// [ClassAndModuleThatMergeWithStaticVariableAndExportedVarThatShareAName.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var A, Point, Point1 = function Point(x, y) {
+var A, Point, A1, Point1 = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
 };
 Point1.Origin = {
     x: 0,
     y: 0
-}, (Point1 || (Point1 = {})).Origin = "", A = {}, (Point = function Point(x, y) {
+}, (Point1 || (Point1 = {})).Origin = "", A = A1 || (A1 = {}), (Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
 }).Origin = {
     x: 0,
diff --git a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndNonExportedVarThatShareAName.2.minified.js b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndNonExportedVarThatShareAName.2.minified.js
index 797e07c5ddb4..fc2719fbdaec 100644
--- a/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndNonExportedVarThatShareAName.2.minified.js
+++ b/crates/swc/tests/tsc-references/ClassAndModuleThatMergeWithStaticVariableAndNonExportedVarThatShareAName.2.minified.js
@@ -1,12 +1,12 @@
 //// [ClassAndModuleThatMergeWithStaticVariableAndNonExportedVarThatShareAName.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var A, Point, Point1 = function Point(x, y) {
+var A, Point, A1, Point1 = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
 };
 Point1.Origin = {
     x: 0,
     y: 0
-}, Point1 || (Point1 = {}), A = {}, (Point = function Point(x, y) {
+}, Point1 || (Point1 = {}), A = A1 || (A1 = {}), (Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
 }).Origin = {
     x: 0,
diff --git a/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRoot.2.minified.js
index 1e68da26279b..a3dc5dfde8a0 100644
--- a/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRoot.2.minified.js
@@ -1,12 +1,12 @@
 //// [class.ts]
-var X;
+var X, X1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-((X = {}).Y || (X.Y = {})).Point = function Point(x, y) {
+((X1 = X || (X = {})).Y || (X1.Y = {})).Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
 };
 //// [module.ts]
-var X, Y, Point;
-(Point = (Y = (X = {}).Y || (X.Y = {})).Point || (Y.Point = {})).Origin = new Point(0, 0);
+var X, X1, Y, Point;
+(Point = (Y = (X1 = X || (X = {})).Y || (X1.Y = {})).Point || (Y.Point = {})).Origin = new Point(0, 0);
 //// [test.ts]
 new X.Y.Point(1, 1), X.Y.Point.Origin;
 //// [simple.ts]
diff --git a/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRootES6.2.minified.js b/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRootES6.2.minified.js
index 019c8bb5aff0..bed3b681a93f 100644
--- a/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRootES6.2.minified.js
+++ b/crates/swc/tests/tsc-references/ClassAndModuleWithSameNameAndCommonRootES6.2.minified.js
@@ -1,13 +1,13 @@
 //// [class.ts]
-var X;
-((X = {}).Y || (X.Y = {})).Point = class {
+var X, X1;
+((X1 = X || (X = {})).Y || (X1.Y = {})).Point = class {
     constructor(x, y){
         this.x = x, this.y = y;
     }
 };
 //// [module.ts]
-var X, Y, Point;
-(Point = (Y = (X = {}).Y || (X.Y = {})).Point || (Y.Point = {})).Origin = new Point(0, 0);
+var X, X1, Y, Point;
+(Point = (Y = (X1 = X || (X = {})).Y || (X1.Y = {})).Point || (Y.Point = {})).Origin = new Point(0, 0);
 //// [test.ts]
 new X.Y.Point(1, 1), X.Y.Point.Origin;
 //// [simple.ts]
diff --git a/crates/swc/tests/tsc-references/ES5SymbolProperty2.2.minified.js b/crates/swc/tests/tsc-references/ES5SymbolProperty2.2.minified.js
index 95ead0f78f00..4d46427c09d4 100644
--- a/crates/swc/tests/tsc-references/ES5SymbolProperty2.2.minified.js
+++ b/crates/swc/tests/tsc-references/ES5SymbolProperty2.2.minified.js
@@ -1,7 +1,7 @@
 //// [ES5SymbolProperty2.ts]
 var M, M1, _$Symbol, C;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-M1 = M = {}, C = function() {
+M1 = M || (M = {}), C = function() {
     function C() {
         _class_call_check(this, C);
     }
diff --git a/crates/swc/tests/tsc-references/ExportClassWhichExtendsInterfaceWithInaccessibleType.2.minified.js b/crates/swc/tests/tsc-references/ExportClassWhichExtendsInterfaceWithInaccessibleType.2.minified.js
index 49c24f833701..a9786cf3c54a 100644
--- a/crates/swc/tests/tsc-references/ExportClassWhichExtendsInterfaceWithInaccessibleType.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportClassWhichExtendsInterfaceWithInaccessibleType.2.minified.js
@@ -1,11 +1,11 @@
 //// [ExportClassWhichExtendsInterfaceWithInaccessibleType.ts]
-var A, Point2d;
+var A, A1, Point2d;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-A = {}, Point2d = function() {
+A1 = A || (A = {}), Point2d = function() {
     function Point2d(x, y) {
         _class_call_check(this, Point2d), this.x = x, this.y = y;
     }
     return Point2d.prototype.fromOrigin = function(p) {
         return 1;
     }, Point2d;
-}(), A.Point2d = Point2d;
+}(), A1.Point2d = Point2d;
diff --git a/crates/swc/tests/tsc-references/ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js b/crates/swc/tests/tsc-references/ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js
index 2e48c962f23b..d54f621888fe 100644
--- a/crates/swc/tests/tsc-references/ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js
@@ -1,11 +1,11 @@
 //// [ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.ts]
-var A, Point, Point3d;
+var A, A1, Point, Point3d;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-A = {}, Point = function Point() {
+A1 = A || (A = {}), Point = function Point() {
     _class_call_check(this, Point);
-}, A.Point = Point, A.Origin = {
+}, A1.Point = Point, A1.Origin = {
     x: 0,
     y: 0
 }, Point3d = function(Point) {
@@ -15,10 +15,10 @@ A = {}, Point = function Point() {
         return _class_call_check(this, Point3d), _super.apply(this, arguments);
     }
     return Point3d;
-}(Point), A.Point3d = Point3d, A.Origin3d = {
+}(Point), A1.Point3d = Point3d, A1.Origin3d = {
     x: 0,
     y: 0,
     z: 0
-}, A.Line = function Line(start, end) {
+}, A1.Line = function Line(start, end) {
     _class_call_check(this, Line), this.start = start, this.end = end;
 };
diff --git a/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInIndexerTypeAnnotations.2.minified.js b/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInIndexerTypeAnnotations.2.minified.js
index aa13040283e5..207eaf3e809f 100644
--- a/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInIndexerTypeAnnotations.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInIndexerTypeAnnotations.2.minified.js
@@ -1,2 +1,6 @@
 //// [ExportClassWithInaccessibleTypeInIndexerTypeAnnotations.ts]
+var A;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
+(A || (A = {})).points = function points() {
+    _class_call_check(this, points);
+};
diff --git a/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInTypeParameterConstraint.2.minified.js b/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInTypeParameterConstraint.2.minified.js
index 6ea0a156730f..59a96bf54a1b 100644
--- a/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInTypeParameterConstraint.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportClassWithInaccessibleTypeInTypeParameterConstraint.2.minified.js
@@ -1,9 +1,9 @@
 //// [ExportClassWithInaccessibleTypeInTypeParameterConstraint.ts]
-var A, Point3d, Line;
+var A, A1, Point3d, Line;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-(A = {}).Origin = {
+(A1 = A || (A = {})).Origin = {
     x: 0,
     y: 0
 }, Point3d = function(Point) {
@@ -15,7 +15,7 @@ import { _ as _create_super } from "@swc/helpers/_/_create_super";
     return Point3d;
 }(function Point() {
     _class_call_check(this, Point);
-}), A.Point3d = Point3d, A.Origin3d = {
+}), A1.Point3d = Point3d, A1.Origin3d = {
     x: 0,
     y: 0,
     z: 0
@@ -26,4 +26,4 @@ import { _ as _create_super } from "@swc/helpers/_/_create_super";
     return Line.fromorigin2d = function(p) {
         return null;
     }, Line;
-}(), A.Line = Line;
+}(), A1.Line = Line;
diff --git a/crates/swc/tests/tsc-references/ExportFunctionWithAccessibleTypesInParameterAndReturnTypeAnnotation.2.minified.js b/crates/swc/tests/tsc-references/ExportFunctionWithAccessibleTypesInParameterAndReturnTypeAnnotation.2.minified.js
index fc19163f936b..e9b8d5500fb4 100644
--- a/crates/swc/tests/tsc-references/ExportFunctionWithAccessibleTypesInParameterAndReturnTypeAnnotation.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportFunctionWithAccessibleTypesInParameterAndReturnTypeAnnotation.2.minified.js
@@ -1,11 +1,11 @@
 //// [ExportFunctionWithAccessibleTypesInParameterAndReturnTypeAnnotation.ts]
-var A, Line;
+var A, A1, Line;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A = {}).Point = function Point() {
+(A1 = A || (A = {})).Point = function Point() {
     _class_call_check(this, Point);
 }, Line = function Line(start, end) {
     _class_call_check(this, Line), this.start = start, this.end = end;
-}, A.Line = Line, A.fromOrigin = function(p) {
+}, A1.Line = Line, A1.fromOrigin = function(p) {
     return new Line({
         x: 0,
         y: 0
diff --git a/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInParameterTypeAnnotation.2.minified.js b/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInParameterTypeAnnotation.2.minified.js
index d1c72061b41b..ef0abb9464e5 100644
--- a/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInParameterTypeAnnotation.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInParameterTypeAnnotation.2.minified.js
@@ -1,9 +1,9 @@
 //// [ExportFunctionWithInaccessibleTypesInParameterTypeAnnotation.ts]
-var A, Line;
+var A, A1, Line;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-A = {}, Line = function Line(start, end) {
+A1 = A || (A = {}), Line = function Line(start, end) {
     _class_call_check(this, Line), this.start = start, this.end = end;
-}, A.Line = Line, A.fromOrigin = function(p) {
+}, A1.Line = Line, A1.fromOrigin = function(p) {
     return new Line({
         x: 0,
         y: 0
diff --git a/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInReturnTypeAnnotation.2.minified.js b/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInReturnTypeAnnotation.2.minified.js
index 769e915bf10c..0846aa5d4fa9 100644
--- a/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInReturnTypeAnnotation.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportFunctionWithInaccessibleTypesInReturnTypeAnnotation.2.minified.js
@@ -1,11 +1,11 @@
 //// [ExportFunctionWithInaccessibleTypesInReturnTypeAnnotation.ts]
-var A, Line;
+var A, A1, Line;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A = {}).Point = function Point() {
+(A1 = A || (A = {})).Point = function Point() {
     _class_call_check(this, Point);
 }, Line = function Line(start, end) {
     _class_call_check(this, Line), this.start = start, this.end = end;
-}, A.fromOrigin = function(p) {
+}, A1.fromOrigin = function(p) {
     return new Line({
         x: 0,
         y: 0
diff --git a/crates/swc/tests/tsc-references/ExportInterfaceWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js b/crates/swc/tests/tsc-references/ExportInterfaceWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js
index 5e2aa739e967..a05953f0aa3d 100644
--- a/crates/swc/tests/tsc-references/ExportInterfaceWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportInterfaceWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.2.minified.js
@@ -1,9 +1,9 @@
 //// [ExportInterfaceWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.ts]
-var A;
-(A = {}).Origin = {
+var A, A1;
+(A1 = A || (A = {})).Origin = {
     x: 0,
     y: 0
-}, A.Origin3d = {
+}, A1.Origin3d = {
     x: 0,
     y: 0,
     z: 0
diff --git a/crates/swc/tests/tsc-references/ExportInterfaceWithInaccessibleTypeInTypeParameterConstraint.2.minified.js b/crates/swc/tests/tsc-references/ExportInterfaceWithInaccessibleTypeInTypeParameterConstraint.2.minified.js
index 0177a3a4e5fa..5e95ec7acb69 100644
--- a/crates/swc/tests/tsc-references/ExportInterfaceWithInaccessibleTypeInTypeParameterConstraint.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportInterfaceWithInaccessibleTypeInTypeParameterConstraint.2.minified.js
@@ -1,9 +1,9 @@
 //// [ExportInterfaceWithInaccessibleTypeInTypeParameterConstraint.ts]
-var A;
-(A = {}).Origin = {
+var A, A1;
+(A1 = A || (A = {})).Origin = {
     x: 0,
     y: 0
-}, A.Origin3d = {
+}, A1.Origin3d = {
     x: 0,
     y: 0,
     z: 0
diff --git a/crates/swc/tests/tsc-references/ExportModuleWithAccessibleTypesOnItsExportedMembers.2.minified.js b/crates/swc/tests/tsc-references/ExportModuleWithAccessibleTypesOnItsExportedMembers.2.minified.js
index 54d936acb5b0..c47fbbeeeb19 100644
--- a/crates/swc/tests/tsc-references/ExportModuleWithAccessibleTypesOnItsExportedMembers.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportModuleWithAccessibleTypesOnItsExportedMembers.2.minified.js
@@ -1,9 +1,9 @@
 //// [ExportModuleWithAccessibleTypesOnItsExportedMembers.ts]
-var A, Point, B, Line;
+var A, A1, Point, B, Line;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-A = {}, Point = function Point(x, y) {
+A1 = A || (A = {}), Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
-}, A.Point = Point, (B = A.B || (A.B = {})).Origin = new Point(0, 0), Line = function() {
+}, A1.Point = Point, (B = A1.B || (A1.B = {})).Origin = new Point(0, 0), Line = function() {
     function Line(start, end) {
         _class_call_check(this, Line);
     }
diff --git a/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInMemberTypeAnnotations.2.minified.js b/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInMemberTypeAnnotations.2.minified.js
index 484d315a72b2..c02904af1e03 100644
--- a/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInMemberTypeAnnotations.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInMemberTypeAnnotations.2.minified.js
@@ -1,12 +1,12 @@
 //// [ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInMemberTypeAnnotations.ts]
-var A, Point;
+var A, A1, Point;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-A = {}, Point = function Point(x, y) {
+A1 = A || (A = {}), Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
-}, A.Origin = {
+}, A1.Origin = {
     x: 0,
     y: 0
-}, A.Unity = {
+}, A1.Unity = {
     start: new Point(0, 0),
     end: new Point(1, 0)
 };
diff --git a/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInNestedMemberTypeAnnotations.2.minified.js b/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInNestedMemberTypeAnnotations.2.minified.js
index 2127113e0207..ced4f3dd2d0f 100644
--- a/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInNestedMemberTypeAnnotations.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInNestedMemberTypeAnnotations.2.minified.js
@@ -1,2 +1,4 @@
 //// [ExportObjectLiteralAndObjectTypeLiteralWithAccessibleTypesInNestedMemberTypeAnnotations.ts]
+var A;
 import "@swc/helpers/_/_class_call_check";
+(A || (A = {})).UnitSquare = null;
diff --git a/crates/swc/tests/tsc-references/ExportVariableOfGenericTypeWithInaccessibleTypeAsTypeArgument.2.minified.js b/crates/swc/tests/tsc-references/ExportVariableOfGenericTypeWithInaccessibleTypeAsTypeArgument.2.minified.js
index 93aff2b23c99..795d32dce1a3 100644
--- a/crates/swc/tests/tsc-references/ExportVariableOfGenericTypeWithInaccessibleTypeAsTypeArgument.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportVariableOfGenericTypeWithInaccessibleTypeAsTypeArgument.2.minified.js
@@ -1,2 +1,4 @@
 //// [ExportVariableOfGenericTypeWithInaccessibleTypeAsTypeArgument.ts]
+var A;
 import "@swc/helpers/_/_class_call_check";
+(A || (A = {})).beez2 = [];
diff --git a/crates/swc/tests/tsc-references/ExportVariableWithAccessibleTypeInTypeAnnotation.2.minified.js b/crates/swc/tests/tsc-references/ExportVariableWithAccessibleTypeInTypeAnnotation.2.minified.js
index adb277d0c1b4..ee06c32ca683 100644
--- a/crates/swc/tests/tsc-references/ExportVariableWithAccessibleTypeInTypeAnnotation.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportVariableWithAccessibleTypeInTypeAnnotation.2.minified.js
@@ -1 +1,6 @@
 //// [ExportVariableWithAccessibleTypeInTypeAnnotation.ts]
+var A;
+(A || (A = {})).Origin = {
+    x: 0,
+    y: 0
+};
diff --git a/crates/swc/tests/tsc-references/ExportVariableWithInaccessibleTypeInTypeAnnotation.2.minified.js b/crates/swc/tests/tsc-references/ExportVariableWithInaccessibleTypeInTypeAnnotation.2.minified.js
index b101ef713692..d4edf5ae2b28 100644
--- a/crates/swc/tests/tsc-references/ExportVariableWithInaccessibleTypeInTypeAnnotation.2.minified.js
+++ b/crates/swc/tests/tsc-references/ExportVariableWithInaccessibleTypeInTypeAnnotation.2.minified.js
@@ -1,9 +1,9 @@
 //// [ExportVariableWithInaccessibleTypeInTypeAnnotation.ts]
-var A;
-(A = {}).Origin = {
+var A, A1;
+(A1 = A || (A = {})).Origin = {
     x: 0,
     y: 0
-}, A.Origin3d = {
+}, A1.Origin3d = {
     x: 0,
     y: 0,
     z: 0
diff --git a/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndCommonRoot.2.minified.js
index 3d8880ca7edb..7c76f63c05b6 100644
--- a/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndCommonRoot.2.minified.js
@@ -1,7 +1,14 @@
 //// [function.ts]
-//// [module.ts]
 var A;
-((A = {}).Point || (A.Point = {})).Origin = {
+(A || (A = {})).Point = function() {
+    return {
+        x: 0,
+        y: 0
+    };
+};
+//// [module.ts]
+var A, A1;
+((A1 = A || (A = {})).Point || (A1.Point = {})).Origin = {
     x: 0,
     y: 0
 };
@@ -20,4 +27,4 @@ var B;
         x: 0,
         y: 0
     };
-}(B = {}), B.Point, B.Point(), B.Point.Origin;
+}(B || (B = {})), B.Point, B.Point(), B.Point.Origin;
diff --git a/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndDifferentCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndDifferentCommonRoot.2.minified.js
index c0f35cc1d60d..a8159472db87 100644
--- a/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndDifferentCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/FunctionAndModuleWithSameNameAndDifferentCommonRoot.2.minified.js
@@ -1,7 +1,14 @@
 //// [function.ts]
+var A;
+(A || (A = {})).Point = function() {
+    return {
+        x: 0,
+        y: 0
+    };
+};
 //// [module.ts]
-var B;
-((B = {}).Point || (B.Point = {})).Origin = {
+var B, B1;
+((B1 = B || (B = {})).Point || (B1.Point = {})).Origin = {
     x: 0,
     y: 0
 };
diff --git a/crates/swc/tests/tsc-references/ModuleAndClassWithSameNameAndCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/ModuleAndClassWithSameNameAndCommonRoot.2.minified.js
index a671f1585e81..9c0b459b41d6 100644
--- a/crates/swc/tests/tsc-references/ModuleAndClassWithSameNameAndCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleAndClassWithSameNameAndCommonRoot.2.minified.js
@@ -1,10 +1,10 @@
 //// [module.ts]
-var X, Y, Point;
-(Point = (Y = (X = {}).Y || (X.Y = {})).Point || (Y.Point = {})).Origin = new Point(0, 0);
+var X, X1, Y, Point;
+(Point = (Y = (X1 = X || (X = {})).Y || (X1.Y = {})).Point || (Y.Point = {})).Origin = new Point(0, 0);
 //// [classPoint.ts]
-var X;
+var X, X1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-((X = {}).Y || (X.Y = {})).Point = function Point(x, y) {
+((X1 = X || (X = {})).Y || (X1.Y = {})).Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
 };
 //// [simple.ts]
diff --git a/crates/swc/tests/tsc-references/ModuleAndFunctionWithSameNameAndCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/ModuleAndFunctionWithSameNameAndCommonRoot.2.minified.js
index 411ce7f68f1e..1d05c3db0844 100644
--- a/crates/swc/tests/tsc-references/ModuleAndFunctionWithSameNameAndCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleAndFunctionWithSameNameAndCommonRoot.2.minified.js
@@ -1,11 +1,19 @@
 //// [module.ts]
-var A;
-((A = {}).Point || (A.Point = {})).Origin = {
+var A, A1;
+((A1 = A || (A = {})).Point || (A1.Point = {})).Origin = {
     x: 0,
     y: 0
 };
 //// [function.ts]
+var A;
+(A || (A = {})).Point = function() {
+    return {
+        x: 0,
+        y: 0
+    };
+};
 //// [simple.ts]
+var B;
 !function(B) {
     var Point;
     function Point() {
@@ -18,4 +26,4 @@ var A;
         x: 0,
         y: 0
     }, B.Point = Point;
-}({});
+}(B || (B = {}));
diff --git a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedClasses.2.minified.js b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedClasses.2.minified.js
index 4d339ae858cb..b36880df4bed 100644
--- a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedClasses.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedClasses.2.minified.js
@@ -1,7 +1,7 @@
 //// [ModuleWithExportedAndNonExportedClasses.ts]
 var A, A1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A1 = A = {}).A = function A() {
+(A1 = A || (A = {})).A = function A() {
     _class_call_check(this, A);
 }, A1.AG = function AG() {
     _class_call_check(this, AG);
diff --git a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedEnums.2.minified.js b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedEnums.2.minified.js
index 11caba9db3f5..fd9fe60bbfb1 100644
--- a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedEnums.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedEnums.2.minified.js
@@ -1,3 +1,3 @@
 //// [ModuleWithExportedAndNonExportedEnums.ts]
-var A, A1, Color, Day;
-(Color = (A1 = A = {}).Color || (A1.Color = {}))[Color.Red = 0] = "Red", Color[Color.Blue = 1] = "Blue", (Day = {})[Day.Monday = 0] = "Monday", Day[Day.Tuesday = 1] = "Tuesday", A.Color.Red, A.Day.Monday;
+var A, A1, Day, Color, Day1;
+(Color = (A1 = A || (A = {})).Color || (A1.Color = {}))[Color.Red = 0] = "Red", Color[Color.Blue = 1] = "Blue", (Day1 = Day || (Day = {}))[Day1.Monday = 0] = "Monday", Day1[Day1.Tuesday = 1] = "Tuesday", A.Color.Red, A.Day.Monday;
diff --git a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedFunctions.2.minified.js b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedFunctions.2.minified.js
index bff8ded6174a..c174c7f76102 100644
--- a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedFunctions.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedFunctions.2.minified.js
@@ -1,6 +1,6 @@
 //// [ModuleWithExportedAndNonExportedFunctions.ts]
 var A, A1;
-(A1 = A = {}).fn = function(s) {
+(A1 = A || (A = {})).fn = function(s) {
     return !0;
 }, A1.fng = function(s) {
     return null;
diff --git a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedImportAlias.2.minified.js b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedImportAlias.2.minified.js
index b81b31769e37..1cd2a3bdfa8e 100644
--- a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedImportAlias.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedImportAlias.2.minified.js
@@ -1,12 +1,12 @@
 //// [ModuleWithExportedAndNonExportedImportAlias.ts]
-var B, Geometry, Geometry1;
+var B, Geometry, Geometry1, Lines;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(B = {}).Line = function Line(start, end) {
+(B || (B = {})).Line = function Line(start, end) {
     _class_call_check(this, Line), this.start = start, this.end = end;
-}, (Geometry1 = Geometry = {}).Points = A, Geometry1.Origin = {
+}, (Geometry1 = Geometry || (Geometry = {})).Points = A, Lines = B, Geometry1.Origin = {
     x: 0,
     y: 0
-}, Geometry1.Unit = new B.Line(Geometry1.Origin, {
+}, Geometry1.Unit = new Lines.Line(Geometry1.Origin, {
     x: 1,
     y: 0
 }), Geometry.Origin, Geometry.Unit, Geometry.Lines.Line;
diff --git a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedVariables.2.minified.js b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedVariables.2.minified.js
index 8dab1810f6a1..2e53de418e59 100644
--- a/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedVariables.2.minified.js
+++ b/crates/swc/tests/tsc-references/ModuleWithExportedAndNonExportedVariables.2.minified.js
@@ -1,3 +1,3 @@
 //// [ModuleWithExportedAndNonExportedVariables.ts]
 var A;
-(A = {}).x = 'hello world', A.x, A.y;
+(A || (A = {})).x = 'hello world', A.x, A.y;
diff --git a/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedAndNonExportedLocalVarsOfTheSameName.2.minified.js b/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedAndNonExportedLocalVarsOfTheSameName.2.minified.js
index 7d35fad4cd41..1407b86efb25 100644
--- a/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedAndNonExportedLocalVarsOfTheSameName.2.minified.js
+++ b/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedAndNonExportedLocalVarsOfTheSameName.2.minified.js
@@ -1,18 +1,18 @@
 //// [part1.ts]
-var A;
-((A = {}).Utils || (A.Utils = {})).mirror = function(p) {
+var A, A1;
+((A1 = A || (A = {})).Utils || (A1.Utils = {})).mirror = function(p) {
     return {
         x: p.y,
         y: p.x
     };
-}, A.Origin = {
+}, A1.Origin = {
     x: 0,
     y: 0
 };
 //// [part2.ts]
-var A;
+var A, A1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-((A = {}).Utils || (A.Utils = {})).Plane = function Plane(tl, br) {
+((A1 = A || (A = {})).Utils || (A1.Utils = {})).Plane = function Plane(tl, br) {
     _class_call_check(this, Plane), this.tl = tl, this.br = br;
 };
 //// [part3.ts]
diff --git a/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedModulesOfTheSameName.2.minified.js b/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedModulesOfTheSameName.2.minified.js
index 91df4e1d8bef..b44ebe0916a5 100644
--- a/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedModulesOfTheSameName.2.minified.js
+++ b/crates/swc/tests/tsc-references/TwoInternalModulesThatMergeEachWithExportedModulesOfTheSameName.2.minified.js
@@ -1,6 +1,8 @@
 //// [TwoInternalModulesThatMergeEachWithExportedModulesOfTheSameName.ts]
-var A, X, A1, X1, Y, X2;
+var A, X, A1, B, X1, Y, X2, Z;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A1 = A || (A = {})).B || (A1.B = {}), A || (A = {}), A.B.x, ((Y = (X1 = X || (X = {})).Y || (X1.Y = {})).Z || (Y.Z = {})).Line = function Line() {
+(A1 = A || (A = {})).B || (A1.B = {}), A || (A = {}), B || (B = {}), A.B.x, ((Y = (X1 = X || (X = {})).Y || (X1.Y = {})).Z || (Y.Z = {})).Line = function Line() {
     _class_call_check(this, Line);
-}, (X2 = X || (X = {})).Y || (X2.Y = {});
+}, (X2 = X || (X = {})).Y || (X2.Y = {}), (Z || (Z = {})).Line = function Line() {
+    _class_call_check(this, Line);
+};
diff --git a/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndDifferentCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndDifferentCommonRoot.2.minified.js
index 769f0754dbed..c049162e2b3d 100644
--- a/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndDifferentCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndDifferentCommonRoot.2.minified.js
@@ -1,15 +1,15 @@
 //// [part1.ts]
-var Root, A;
-((A = (Root = {}).A || (Root.A = {})).Utils || (A.Utils = {})).mirror = function(p) {
+var Root, Root1, A;
+((A = (Root1 = Root || (Root = {})).A || (Root1.A = {})).Utils || (A.Utils = {})).mirror = function(p) {
     return {
         x: p.y,
         y: p.x
     };
 };
 //// [part2.ts]
-var otherRoot, A;
+var otherRoot, otherRoot1, A;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A = (otherRoot = {}).A || (otherRoot.A = {})).Origin = {
+(A = (otherRoot1 = otherRoot || (otherRoot = {})).A || (otherRoot1.A = {})).Origin = {
     x: 0,
     y: 0
 }, (A.Utils || (A.Utils = {})).Plane = function Plane(tl, br) {
diff --git a/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndSameCommonRoot.2.minified.js b/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndSameCommonRoot.2.minified.js
index 60401826d55e..adf1fe174cd1 100644
--- a/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndSameCommonRoot.2.minified.js
+++ b/crates/swc/tests/tsc-references/TwoInternalModulesWithTheSameNameAndSameCommonRoot.2.minified.js
@@ -1,18 +1,18 @@
 //// [part1.ts]
-var A;
-((A = {}).Utils || (A.Utils = {})).mirror = function(p) {
+var A, A1;
+((A1 = A || (A = {})).Utils || (A1.Utils = {})).mirror = function(p) {
     return {
         x: p.y,
         y: p.x
     };
 };
 //// [part2.ts]
-var A;
+var A, A1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A = {}).Origin = {
+(A1 = A || (A = {})).Origin = {
     x: 0,
     y: 0
-}, (A.Utils || (A.Utils = {})).Plane = function Plane(tl, br) {
+}, (A1.Utils || (A1.Utils = {})).Plane = function Plane(tl, br) {
     _class_call_check(this, Plane), this.tl = tl, this.br = br;
 };
 //// [part3.ts]
diff --git a/crates/swc/tests/tsc-references/TypeGuardWithEnumUnion.2.minified.js b/crates/swc/tests/tsc-references/TypeGuardWithEnumUnion.2.minified.js
index 63f06ecced4a..d94cc1dcc4cc 100644
--- a/crates/swc/tests/tsc-references/TypeGuardWithEnumUnion.2.minified.js
+++ b/crates/swc/tests/tsc-references/TypeGuardWithEnumUnion.2.minified.js
@@ -1,4 +1,4 @@
 //// [TypeGuardWithEnumUnion.ts]
-var Color;
+var Color, Color1;
 import "@swc/helpers/_/_type_of";
-(Color = {})[Color.R = 0] = "R", Color[Color.G = 1] = "G", Color[Color.B = 2] = "B";
+(Color1 = Color || (Color = {}))[Color1.R = 0] = "R", Color1[Color1.G = 1] = "G", Color1[Color1.B = 2] = "B";
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithAnyAndEveryType.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithAnyAndEveryType.2.minified.js
index e1d2d6ae002e..93576bbf0776 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithAnyAndEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithAnyAndEveryType.2.minified.js
@@ -1,9 +1,9 @@
 //// [additionOperatorWithAnyAndEveryType.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var E, C = function() {
+var E, E1, M, C = function() {
     function C() {
         _class_call_check(this, C);
     }
     return C.foo = function() {}, C;
 }();
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c", new C();
+(E = E1 || (E1 = {}))[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c", M || (M = {}), new C();
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithInvalidOperands.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithInvalidOperands.2.minified.js
index 8ba74080303c..096dc6787b99 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithInvalidOperands.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithInvalidOperands.2.minified.js
@@ -1,9 +1,9 @@
 //// [additionOperatorWithInvalidOperands.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var E, C = function() {
+var E, E1, M, C = function() {
     function C() {
         _class_call_check(this, C);
     }
     return C.foo = function() {}, C;
 }();
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c", new C(), C.foo();
+(E = E1 || (E1 = {}))[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c", M || (M = {}), new C(), C.foo();
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithNullValueAndValidOperator.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithNullValueAndValidOperator.2.minified.js
index 0cb1aba66e6d..f529f9cafce3 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithNullValueAndValidOperator.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithNullValueAndValidOperator.2.minified.js
@@ -1,3 +1,3 @@
 //// [additionOperatorWithNullValueAndValidOperator.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithNumberAndEnum.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithNumberAndEnum.2.minified.js
index 4f840aefd51a..4ae8f17e89ef 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithNumberAndEnum.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithNumberAndEnum.2.minified.js
@@ -1,3 +1,3 @@
 //// [additionOperatorWithNumberAndEnum.ts]
-var E, F;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", (F = {})[F.c = 0] = "c", F[F.d = 1] = "d";
+var E, F, E1, F1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", (F1 = F || (F = {}))[F1.c = 0] = "c", F1[F1.d = 1] = "d";
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithStringAndEveryType.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithStringAndEveryType.2.minified.js
index 29dbceaffc9e..489e001a73fa 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithStringAndEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithStringAndEveryType.2.minified.js
@@ -1,3 +1,3 @@
 //// [additionOperatorWithStringAndEveryType.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithTypeParameter.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithTypeParameter.2.minified.js
index c1e545ff418d..74d02f97faad 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithTypeParameter.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithTypeParameter.2.minified.js
@@ -1,3 +1,3 @@
 //// [additionOperatorWithTypeParameter.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/additionOperatorWithUndefinedValueAndValidOperator.2.minified.js b/crates/swc/tests/tsc-references/additionOperatorWithUndefinedValueAndValidOperator.2.minified.js
index e0e6d97e0a59..6d15ae843967 100644
--- a/crates/swc/tests/tsc-references/additionOperatorWithUndefinedValueAndValidOperator.2.minified.js
+++ b/crates/swc/tests/tsc-references/additionOperatorWithUndefinedValueAndValidOperator.2.minified.js
@@ -1,3 +1,3 @@
 //// [additionOperatorWithUndefinedValueAndValidOperator.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/ambientInsideNonAmbient.2.minified.js b/crates/swc/tests/tsc-references/ambientInsideNonAmbient.2.minified.js
index 4d3f002e0b84..b133fdd22be3 100644
--- a/crates/swc/tests/tsc-references/ambientInsideNonAmbient.2.minified.js
+++ b/crates/swc/tests/tsc-references/ambientInsideNonAmbient.2.minified.js
@@ -1 +1,3 @@
 //// [ambientInsideNonAmbient.ts]
+var M, M2;
+M || (M = {}), M2 || (M2 = {});
diff --git a/crates/swc/tests/tsc-references/amdImportAsPrimaryExpression.2.minified.js b/crates/swc/tests/tsc-references/amdImportAsPrimaryExpression.2.minified.js
index 6c607a062185..0f4b82e04016 100644
--- a/crates/swc/tests/tsc-references/amdImportAsPrimaryExpression.2.minified.js
+++ b/crates/swc/tests/tsc-references/amdImportAsPrimaryExpression.2.minified.js
@@ -11,7 +11,7 @@ define([
         get: function() {
             return E1;
         }
-    }), (E11 = E1 = {})[E11.A = 0] = "A", E11[E11.B = 1] = "B", E11[E11.C = 2] = "C";
+    }), (E11 = E1 || (E1 = {}))[E11.A = 0] = "A", E11[E11.B = 1] = "B", E11[E11.C = 2] = "C";
 });
 //// [foo_1.ts]
 define([
diff --git a/crates/swc/tests/tsc-references/amdImportNotAsPrimaryExpression.2.minified.js b/crates/swc/tests/tsc-references/amdImportNotAsPrimaryExpression.2.minified.js
index 4b643367929b..8ff118e13278 100644
--- a/crates/swc/tests/tsc-references/amdImportNotAsPrimaryExpression.2.minified.js
+++ b/crates/swc/tests/tsc-references/amdImportNotAsPrimaryExpression.2.minified.js
@@ -22,7 +22,7 @@ define([
     var E1, E11, C1 = function C1() {
         _class_call_check._(this, C1), this.m1 = 42;
     };
-    C1.s1 = !0, (E1 = E11 = {})[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C";
+    C1.s1 = !0, (E1 = E11 || (E11 = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C";
 });
 //// [foo_1.ts]
 define([
diff --git a/crates/swc/tests/tsc-references/anyAssignabilityInInheritance.2.minified.js b/crates/swc/tests/tsc-references/anyAssignabilityInInheritance.2.minified.js
index ab786f84bcca..a8e23114ebf1 100644
--- a/crates/swc/tests/tsc-references/anyAssignabilityInInheritance.2.minified.js
+++ b/crates/swc/tests/tsc-references/anyAssignabilityInInheritance.2.minified.js
@@ -1,8 +1,8 @@
 //// [anyAssignabilityInInheritance.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-foo2(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), (E = {})[E.A = 0] = "A", foo3(a), (f || (f = {})).bar = 1, foo3(a);
-var E, a, CC = function CC() {
+foo2(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), foo3(a), (E = E1 || (E1 = {}))[E.A = 0] = "A", foo3(a), (f || (f = {})).bar = 1, foo3(a);
+var E, a, E1, CC = function CC() {
     _class_call_check(this, CC);
 };
 (CC || (CC = {})).bar = 1, foo3(a), foo3(a), foo3(a);
diff --git a/crates/swc/tests/tsc-references/anyAssignableToEveryType.2.minified.js b/crates/swc/tests/tsc-references/anyAssignableToEveryType.2.minified.js
index a6aa6e5846cf..440abe140c87 100644
--- a/crates/swc/tests/tsc-references/anyAssignableToEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/anyAssignableToEveryType.2.minified.js
@@ -1,4 +1,4 @@
 //// [anyAssignableToEveryType.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/anyAssignableToEveryType2.2.minified.js b/crates/swc/tests/tsc-references/anyAssignableToEveryType2.2.minified.js
index 58f57a9e715d..b25ab2e6f67b 100644
--- a/crates/swc/tests/tsc-references/anyAssignableToEveryType2.2.minified.js
+++ b/crates/swc/tests/tsc-references/anyAssignableToEveryType2.2.minified.js
@@ -1,8 +1,8 @@
 //// [anyAssignableToEveryType2.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E = E1 || (E1 = {}))[E.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/arithmeticOperatorWithEnum.2.minified.js b/crates/swc/tests/tsc-references/arithmeticOperatorWithEnum.2.minified.js
index 81d561b5ff38..9fb293eb4cfe 100644
--- a/crates/swc/tests/tsc-references/arithmeticOperatorWithEnum.2.minified.js
+++ b/crates/swc/tests/tsc-references/arithmeticOperatorWithEnum.2.minified.js
@@ -1,3 +1,3 @@
 //// [arithmeticOperatorWithEnum.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/arithmeticOperatorWithEnumUnion.2.minified.js b/crates/swc/tests/tsc-references/arithmeticOperatorWithEnumUnion.2.minified.js
index beca90b88ee1..fa30ce503a73 100644
--- a/crates/swc/tests/tsc-references/arithmeticOperatorWithEnumUnion.2.minified.js
+++ b/crates/swc/tests/tsc-references/arithmeticOperatorWithEnumUnion.2.minified.js
@@ -1,3 +1,3 @@
 //// [arithmeticOperatorWithEnumUnion.ts]
-var E, F;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", (F = {})[F.c = 0] = "c", F[F.d = 1] = "d";
+var E, F, E1, F1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", (F1 = F || (F = {}))[F1.c = 0] = "c", F1[F1.d = 1] = "d";
diff --git a/crates/swc/tests/tsc-references/arithmeticOperatorWithInvalidOperands.2.minified.js b/crates/swc/tests/tsc-references/arithmeticOperatorWithInvalidOperands.2.minified.js
index aca8587964e4..02d31a648031 100644
--- a/crates/swc/tests/tsc-references/arithmeticOperatorWithInvalidOperands.2.minified.js
+++ b/crates/swc/tests/tsc-references/arithmeticOperatorWithInvalidOperands.2.minified.js
@@ -1,3 +1,3 @@
 //// [arithmeticOperatorWithInvalidOperands.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/asiPreventsParsingAsAmbientExternalModule02.2.minified.js b/crates/swc/tests/tsc-references/asiPreventsParsingAsAmbientExternalModule02.2.minified.js
index 010a6de07091..3164b75a6fca 100644
--- a/crates/swc/tests/tsc-references/asiPreventsParsingAsAmbientExternalModule02.2.minified.js
+++ b/crates/swc/tests/tsc-references/asiPreventsParsingAsAmbientExternalModule02.2.minified.js
@@ -1 +1,3 @@
 //// [asiPreventsParsingAsAmbientExternalModule02.ts]
+var container;
+container || (container = {});
diff --git a/crates/swc/tests/tsc-references/asiPreventsParsingAsNamespace05.2.minified.js b/crates/swc/tests/tsc-references/asiPreventsParsingAsNamespace05.2.minified.js
index a725b438b979..ccd6bbb0cfdf 100644
--- a/crates/swc/tests/tsc-references/asiPreventsParsingAsNamespace05.2.minified.js
+++ b/crates/swc/tests/tsc-references/asiPreventsParsingAsNamespace05.2.minified.js
@@ -1,3 +1,3 @@
 //// [asiPreventsParsingAsNamespace05.ts]
-var a;
-((a = {}).b || (a.b = {})).c = 20;
+var a, a1;
+((a1 = a || (a = {})).b || (a1.b = {})).c = 20;
diff --git a/crates/swc/tests/tsc-references/asiPreventsParsingAsTypeAlias02.2.minified.js b/crates/swc/tests/tsc-references/asiPreventsParsingAsTypeAlias02.2.minified.js
index 15a823074d52..c59a44614d05 100644
--- a/crates/swc/tests/tsc-references/asiPreventsParsingAsTypeAlias02.2.minified.js
+++ b/crates/swc/tests/tsc-references/asiPreventsParsingAsTypeAlias02.2.minified.js
@@ -1 +1,3 @@
 //// [asiPreventsParsingAsTypeAlias02.ts]
+var container;
+container || (container = {});
diff --git a/crates/swc/tests/tsc-references/assignAnyToEveryType.2.minified.js b/crates/swc/tests/tsc-references/assignAnyToEveryType.2.minified.js
index e444a86d8844..eebb9a998b87 100644
--- a/crates/swc/tests/tsc-references/assignAnyToEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignAnyToEveryType.2.minified.js
@@ -1,4 +1,4 @@
 //// [assignAnyToEveryType.ts]
-var E;
+var E, M, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A", (M || (M = {})).foo = 1;
diff --git a/crates/swc/tests/tsc-references/assignEveryTypeToAny.2.minified.js b/crates/swc/tests/tsc-references/assignEveryTypeToAny.2.minified.js
index a1684ee8ffba..82710f897f3f 100644
--- a/crates/swc/tests/tsc-references/assignEveryTypeToAny.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignEveryTypeToAny.2.minified.js
@@ -1,4 +1,4 @@
 //// [assignEveryTypeToAny.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithCallSignatures4.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithCallSignatures4.2.minified.js
index 6d69e0731b64..de211216c678 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithCallSignatures4.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithCallSignatures4.2.minified.js
@@ -1,4 +1,6 @@
 //// [assignmentCompatWithCallSignatures4.ts]
+var Errors, WithNonGenericSignaturesInBaseType, WithGenericSignaturesInBaseType;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Errors || (Errors = {}), WithNonGenericSignaturesInBaseType || (WithNonGenericSignaturesInBaseType = {}), WithGenericSignaturesInBaseType || (WithGenericSignaturesInBaseType = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithConstructSignatures4.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithConstructSignatures4.2.minified.js
index 2316c4f7afa0..2b94e7e9abd9 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithConstructSignatures4.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithConstructSignatures4.2.minified.js
@@ -1,4 +1,6 @@
 //// [assignmentCompatWithConstructSignatures4.ts]
+var Errors, WithNonGenericSignaturesInBaseType, WithGenericSignaturesInBaseType;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Errors || (Errors = {}), WithNonGenericSignaturesInBaseType || (WithNonGenericSignaturesInBaseType = {}), WithGenericSignaturesInBaseType || (WithGenericSignaturesInBaseType = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithDiscriminatedUnion.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithDiscriminatedUnion.2.minified.js
index 83f8703b5855..347ed618413b 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithDiscriminatedUnion.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithDiscriminatedUnion.2.minified.js
@@ -1,8 +1,8 @@
 //// [assignmentCompatWithDiscriminatedUnion.ts]
-var b1;
-t = s, t = s, t = s, t = s, t = s, b1.type, function(GH12052) {
+var Example1, Example2, Example3, Example4, Example5, GH14865, GH30170, GH12052, GH18421, GH15907, GH20889, GH39357, b1;
+Example1 || (Example1 = {}), t = s, Example2 || (Example2 = {}), t = s, Example3 || (Example3 = {}), t = s, Example4 || (Example4 = {}), t = s, Example5 || (Example5 = {}), t = s, GH14865 || (GH14865 = {}), b1.type, GH30170 || (GH30170 = {}), function(GH12052) {
     function getAxisType() {
         return "categorical";
     }
     getAxisType(), getAxisType();
-}(0), ("a" === b || "b" === b) && b;
+}(GH12052 || (GH12052 = {})), GH18421 || (GH18421 = {}), GH15907 || (GH15907 = {}), GH20889 || (GH20889 = {}), GH39357 || (GH39357 = {}), ("a" === b || "b" === b) && b;
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithEnumIndexer.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithEnumIndexer.2.minified.js
index 7ba726fdea94..d139595fc8cd 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithEnumIndexer.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithEnumIndexer.2.minified.js
@@ -1,3 +1,3 @@
 //// [assignmentCompatWithEnumIndexer.ts]
-var E;
-(E = {})[E.A = 0] = "A";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithGenericCallSignaturesWithOptionalParameters.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithGenericCallSignaturesWithOptionalParameters.2.minified.js
index 630f325a1348..dce09b422706 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithGenericCallSignaturesWithOptionalParameters.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithGenericCallSignaturesWithOptionalParameters.2.minified.js
@@ -1,2 +1,4 @@
 //// [assignmentCompatWithGenericCallSignaturesWithOptionalParameters.ts]
+var ClassTypeParam, GenericSignaturesInvalid, GenericSignaturesValid;
 import "@swc/helpers/_/_class_call_check";
+ClassTypeParam || (ClassTypeParam = {}), GenericSignaturesInvalid || (GenericSignaturesInvalid = {}), GenericSignaturesValid || (GenericSignaturesValid = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer.2.minified.js
index 5e1508b1a129..545834755797 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer.2.minified.js
@@ -1,4 +1,6 @@
 //// [assignmentCompatWithNumericIndexer.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer2.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer2.2.minified.js
index 6fecb224246d..2db32e558def 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer2.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer2.2.minified.js
@@ -1 +1,3 @@
 //// [assignmentCompatWithNumericIndexer2.ts]
+var Generics;
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer3.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer3.2.minified.js
index cc1e2e5fbae0..6ec041eb4155 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer3.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithNumericIndexer3.2.minified.js
@@ -1,4 +1,6 @@
 //// [assignmentCompatWithNumericIndexer3.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers.2.minified.js
index 109e02cc84e2..fe7d91980b26 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers.2.minified.js
@@ -1,7 +1,7 @@
 //// [assignmentCompatWithObjectMembers.ts]
-var a2, b2;
+var SimpleTypes, ObjectTypes, a2, b2;
 import "@swc/helpers/_/_class_call_check";
-a2 = {
+SimpleTypes || (SimpleTypes = {}), ObjectTypes || (ObjectTypes = {}), a2 = {
     foo: a2
 }, b2 = a2 = b2 = {
     foo: b2
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers4.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers4.2.minified.js
index 1d7b3090af8e..09c99aa56f68 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers4.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembers4.2.minified.js
@@ -1,9 +1,9 @@
 //// [assignmentCompatWithObjectMembers4.ts]
-var Base, Derived, Derived2, Base1, Derived21;
+var OnlyDerived, WithBase, Base, Derived, Derived2, Base1, Derived21;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-Derived = function(Base) {
+OnlyDerived || (OnlyDerived = {}), Derived = function(Base) {
     _inherits(Derived, Base);
     var _super = _create_super(Derived);
     function Derived() {
@@ -19,7 +19,7 @@ Derived = function(Base) {
         return _class_call_check(this, Derived2), _super.apply(this, arguments);
     }
     return Derived2;
-}(Base), new Derived(), new Derived2(), Derived21 = function(Base) {
+}(Base), new Derived(), new Derived2(), WithBase || (WithBase = {}), Derived21 = function(Base) {
     _inherits(Derived2, Base);
     var _super = _create_super(Derived2);
     function Derived2() {
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality.2.minified.js
index ea1647e61e17..8970370ca3cf 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality.2.minified.js
@@ -2,7 +2,7 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var Base = function Base() {
+var TargetHasOptional, SourceHasOptional, Base = function Base() {
     _class_call_check(this, Base);
 };
-new Base(), new Base();
+TargetHasOptional || (TargetHasOptional = {}), new Base(), SourceHasOptional || (SourceHasOptional = {}), new Base();
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality2.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality2.2.minified.js
index bcd6d95292d3..751993de81d0 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality2.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersOptionality2.2.minified.js
@@ -2,7 +2,7 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var Base = function Base() {
+var TargetHasOptional, SourceHasOptional, Base = function Base() {
     _class_call_check(this, Base);
 };
-new Base(), new Base();
+TargetHasOptional || (TargetHasOptional = {}), new Base(), SourceHasOptional || (SourceHasOptional = {}), new Base();
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersStringNumericNames.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersStringNumericNames.2.minified.js
index 66819eccf3d7..e49fc71893a6 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersStringNumericNames.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithObjectMembersStringNumericNames.2.minified.js
@@ -1,2 +1,4 @@
 //// [assignmentCompatWithObjectMembersStringNumericNames.ts]
+var JustStrings, NumbersAndStrings;
 import "@swc/helpers/_/_class_call_check";
+JustStrings || (JustStrings = {}), NumbersAndStrings || (NumbersAndStrings = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer.2.minified.js
index 4117c8dfff3d..a8f7f0fc6668 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer.2.minified.js
@@ -1,4 +1,6 @@
 //// [assignmentCompatWithStringIndexer.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer2.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer2.2.minified.js
index 472895263608..59616c7b1721 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer2.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer2.2.minified.js
@@ -1 +1,3 @@
 //// [assignmentCompatWithStringIndexer2.ts]
+var Generics;
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer3.2.minified.js b/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer3.2.minified.js
index 116c9b449fe0..1fb7f1fdabe1 100644
--- a/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer3.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentCompatWithStringIndexer3.2.minified.js
@@ -1,2 +1,4 @@
 //// [assignmentCompatWithStringIndexer3.ts]
+var Generics;
 import "@swc/helpers/_/_class_call_check";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/assignmentToParenthesizedIdentifiers.2.minified.js b/crates/swc/tests/tsc-references/assignmentToParenthesizedIdentifiers.2.minified.js
index f78a78260127..8c72491cd01b 100644
--- a/crates/swc/tests/tsc-references/assignmentToParenthesizedIdentifiers.2.minified.js
+++ b/crates/swc/tests/tsc-references/assignmentToParenthesizedIdentifiers.2.minified.js
@@ -1,11 +1,11 @@
 //// [assignmentToParenthesizedIdentifiers.ts]
-var M, M2, M21, E;
+var M, M2, E, M21, E1;
 import "@swc/helpers/_/_class_call_check";
 M || (M = {}), M.y = 3, M.y = 3, M.y = 3, M.y = '', M.y = '', M.y = '', M = {
     y: 3
 }, M = {
     y: 3
-}, (M21 = M2 = {}).M3 || (M21.M3 = {}), M2.M3 = {
+}, (M21 = M2 || (M2 = {})).M3 || (M21.M3 = {}), M2.M3 = {
     x: 3
 }, M2.M3 = {
     x: 3
@@ -17,4 +17,4 @@ M || (M = {}), M.y = 3, M.y = 3, M.y = 3, M.y = '', M.y = '', M.y = '', M = {
     x: ''
 }, M2.M3 = {
     x: ''
-}, (E = {})[E.A = 0] = "A";
+}, (E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es2017.2.minified.js b/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es2017.2.minified.js
index 77436db3e5bf..9d52dfa2b2f8 100644
--- a/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es2017.2.minified.js
+++ b/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es2017.2.minified.js
@@ -1,6 +1,7 @@
 //// [asyncAwaitIsolatedModules_es2017.ts]
+var M;
 !function(M) {
     async function f1() {}
     M.f1 = f1;
-}({});
+}(M || (M = {}));
 export { };
diff --git a/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es5.2.minified.js b/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es5.2.minified.js
index 5cf85bd8daa5..efcffa015520 100644
--- a/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es5.2.minified.js
+++ b/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es5.2.minified.js
@@ -1,4 +1,5 @@
 //// [asyncAwaitIsolatedModules_es5.ts]
+var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
@@ -79,4 +80,4 @@ _async_to_generator(function() {
     M.f1 = function() {
         return _f1.apply(this, arguments);
     };
-}({});
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es6.2.minified.js b/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es6.2.minified.js
index 0efdde027098..16c603790e70 100644
--- a/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es6.2.minified.js
+++ b/crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es6.2.minified.js
@@ -1,4 +1,5 @@
 //// [asyncAwaitIsolatedModules_es6.ts]
+var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {
     return p;
@@ -15,4 +16,4 @@ _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async
     M.f1 = function() {
         return _f1.apply(this, arguments);
     };
-}({});
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/asyncAwait_es2017.2.minified.js b/crates/swc/tests/tsc-references/asyncAwait_es2017.2.minified.js
index 628a82a95310..e025d688800f 100644
--- a/crates/swc/tests/tsc-references/asyncAwait_es2017.2.minified.js
+++ b/crates/swc/tests/tsc-references/asyncAwait_es2017.2.minified.js
@@ -1,5 +1,6 @@
 //// [asyncAwait_es2017.ts]
+var M;
 !function(M) {
     async function f1() {}
     M.f1 = f1;
-}({});
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/asyncAwait_es5.2.minified.js b/crates/swc/tests/tsc-references/asyncAwait_es5.2.minified.js
index febf4c5ff02c..329c20b0d5c8 100644
--- a/crates/swc/tests/tsc-references/asyncAwait_es5.2.minified.js
+++ b/crates/swc/tests/tsc-references/asyncAwait_es5.2.minified.js
@@ -1,4 +1,5 @@
 //// [asyncAwait_es5.ts]
+var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
@@ -79,4 +80,4 @@ _async_to_generator(function() {
     M.f1 = function() {
         return _f1.apply(this, arguments);
     };
-}({});
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/asyncAwait_es6.2.minified.js b/crates/swc/tests/tsc-references/asyncAwait_es6.2.minified.js
index d4643fe2e5e3..854a0c852f3f 100644
--- a/crates/swc/tests/tsc-references/asyncAwait_es6.2.minified.js
+++ b/crates/swc/tests/tsc-references/asyncAwait_es6.2.minified.js
@@ -1,4 +1,5 @@
 //// [asyncAwait_es6.ts]
+var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {
     return p;
@@ -15,4 +16,4 @@ _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async
     M.f1 = function() {
         return _f1.apply(this, arguments);
     };
-}({});
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/bestCommonTypeOfTuple.2.minified.js b/crates/swc/tests/tsc-references/bestCommonTypeOfTuple.2.minified.js
index 245d3b09211f..e35b17296053 100644
--- a/crates/swc/tests/tsc-references/bestCommonTypeOfTuple.2.minified.js
+++ b/crates/swc/tests/tsc-references/bestCommonTypeOfTuple.2.minified.js
@@ -1,3 +1,3 @@
 //// [bestCommonTypeOfTuple.ts]
-var E1, E2;
-(E1 = {})[E1.one = 0] = "one", (E2 = {})[E2.two = 0] = "two";
+var E1, E2, E11, E21;
+(E11 = E1 || (E1 = {}))[E11.one = 0] = "one", (E21 = E2 || (E2 = {}))[E21.two = 0] = "two";
diff --git a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithBooleanType.2.minified.js b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithBooleanType.2.minified.js
index 8289d08e76c1..89baac5fa269 100644
--- a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithBooleanType.2.minified.js
+++ b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithBooleanType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return !1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithEnumType.2.minified.js
index bfba6a29d6a9..fd3ca88bf317 100644
--- a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [bitwiseNotOperatorWithEnumType.ts]
-var ENUM1;
-(ENUM1 = {})[ENUM1.A = 0] = "A", ENUM1[ENUM1.B = 1] = "B", ENUM1[ENUM1[""] = 2] = "";
+var ENUM1, ENUM11;
+(ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "";
diff --git a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithNumberType.2.minified.js
index 9e3d05797e83..6fc3e57c74f6 100644
--- a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithNumberType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return 1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n, objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithStringType.2.minified.js b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithStringType.2.minified.js
index debd016a6f83..09729de23798 100644
--- a/crates/swc/tests/tsc-references/bitwiseNotOperatorWithStringType.2.minified.js
+++ b/crates/swc/tests/tsc-references/bitwiseNotOperatorWithStringType.2.minified.js
@@ -8,6 +8,6 @@ var STRING, M, A = function() {
         return "";
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), STRING.charAt(0), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/callSignatureAssignabilityInInheritance3.2.minified.js b/crates/swc/tests/tsc-references/callSignatureAssignabilityInInheritance3.2.minified.js
index 32e27c45d4b9..2678c24f21bf 100644
--- a/crates/swc/tests/tsc-references/callSignatureAssignabilityInInheritance3.2.minified.js
+++ b/crates/swc/tests/tsc-references/callSignatureAssignabilityInInheritance3.2.minified.js
@@ -1,4 +1,6 @@
 //// [callSignatureAssignabilityInInheritance3.ts]
+var Errors;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Errors || (Errors = {});
diff --git a/crates/swc/tests/tsc-references/callSignatureWithoutReturnTypeAnnotationInference.2.minified.js b/crates/swc/tests/tsc-references/callSignatureWithoutReturnTypeAnnotationInference.2.minified.js
index a14f4168847d..f7abb1637091 100644
--- a/crates/swc/tests/tsc-references/callSignatureWithoutReturnTypeAnnotationInference.2.minified.js
+++ b/crates/swc/tests/tsc-references/callSignatureWithoutReturnTypeAnnotationInference.2.minified.js
@@ -6,10 +6,10 @@ function m1() {
 }
 !function foo3() {
     return foo3();
-}(), _type_of(1), (M = {}).x = 1, M.C = function C() {
+}(), _type_of(1), (M = M1 || (M1 = {})).x = 1, M.C = function C() {
     _class_call_check(this, C);
 }, (m1 || (m1 = {})).y = 2;
-var e1, M, e11, c1 = function c1(x) {
+var e1, M, M1, e11, c1 = function c1(x) {
     _class_call_check(this, c1);
 };
 (c1 || (c1 = {})).x = 1, (e1 = e11 || (e11 = {}))[e1.A = 0] = "A", (e11 || (e11 = {})).y = 1;
diff --git a/crates/swc/tests/tsc-references/castingTuple.2.minified.js b/crates/swc/tests/tsc-references/castingTuple.2.minified.js
index 1e1db180261f..784003d3fea0 100644
--- a/crates/swc/tests/tsc-references/castingTuple.2.minified.js
+++ b/crates/swc/tests/tsc-references/castingTuple.2.minified.js
@@ -2,12 +2,12 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var E1, E2, C = function C() {
+var E1, E2, E11, E21, C = function C() {
     _class_call_check(this, C);
 }, D = function D() {
     _class_call_check(this, D);
 };
-(E1 = {})[E1.one = 0] = "one", (E2 = {})[E2.one = 0] = "one";
+(E11 = E1 || (E1 = {}))[E11.one = 0] = "one", (E21 = E2 || (E2 = {}))[E21.one = 0] = "one";
 var classCDTuple = [
     new C(),
     new D()
diff --git a/crates/swc/tests/tsc-references/circularImportAlias.2.minified.js b/crates/swc/tests/tsc-references/circularImportAlias.2.minified.js
index 07c9815e27e2..bdc33259e9b5 100644
--- a/crates/swc/tests/tsc-references/circularImportAlias.2.minified.js
+++ b/crates/swc/tests/tsc-references/circularImportAlias.2.minified.js
@@ -3,13 +3,13 @@ var B, A, B1, D, A1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-(B1 = B = {}).a = A, D = function(_B_a_C) {
+(B1 = B || (B = {})).a = A, D = function(_B_a_C) {
     _inherits(D, _B_a_C);
     var _super = _create_super(D);
     function D() {
         return _class_call_check(this, D), _super.apply(this, arguments);
     }
     return D;
-}(B1.a.C), B1.D = D, (A1 = A = {}).C = function C() {
+}(B1.a.C), B1.D = D, (A1 = A || (A = {})).C = function C() {
     _class_call_check(this, C);
 }, A1.b = B, new B.a.C();
diff --git a/crates/swc/tests/tsc-references/classAbstractImportInstantiation.2.minified.js b/crates/swc/tests/tsc-references/classAbstractImportInstantiation.2.minified.js
index 1275cf7640b4..2be563d02dc3 100644
--- a/crates/swc/tests/tsc-references/classAbstractImportInstantiation.2.minified.js
+++ b/crates/swc/tests/tsc-references/classAbstractImportInstantiation.2.minified.js
@@ -1,6 +1,6 @@
 //// [classAbstractImportInstantiation.ts]
 var M, A, M1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-M = M1 = {}, A = function A() {
+M = M1 || (M1 = {}), A = function A() {
     _class_call_check(this, A);
 }, M.A = A, new A, new M1.A;
diff --git a/crates/swc/tests/tsc-references/classAbstractInAModule.2.minified.js b/crates/swc/tests/tsc-references/classAbstractInAModule.2.minified.js
index 92a9191c5fa6..b379811fea8a 100644
--- a/crates/swc/tests/tsc-references/classAbstractInAModule.2.minified.js
+++ b/crates/swc/tests/tsc-references/classAbstractInAModule.2.minified.js
@@ -3,7 +3,7 @@ var M, M1, A, B;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-M1 = M = {}, A = function A() {
+M1 = M || (M = {}), A = function A() {
     _class_call_check(this, A);
 }, M1.A = A, B = function(A) {
     _inherits(B, A);
diff --git a/crates/swc/tests/tsc-references/classAndInterfaceWithSameName.2.minified.js b/crates/swc/tests/tsc-references/classAndInterfaceWithSameName.2.minified.js
index 1a6d842318fd..dc4f705dbd39 100644
--- a/crates/swc/tests/tsc-references/classAndInterfaceWithSameName.2.minified.js
+++ b/crates/swc/tests/tsc-references/classAndInterfaceWithSameName.2.minified.js
@@ -1,2 +1,4 @@
 //// [classAndInterfaceWithSameName.ts]
+var M;
 import "@swc/helpers/_/_class_call_check";
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/classConstructorAccessibility.2.minified.js b/crates/swc/tests/tsc-references/classConstructorAccessibility.2.minified.js
index b7a0fb1f1f2a..225e19c7ad89 100644
--- a/crates/swc/tests/tsc-references/classConstructorAccessibility.2.minified.js
+++ b/crates/swc/tests/tsc-references/classConstructorAccessibility.2.minified.js
@@ -1,4 +1,5 @@
 //// [classConstructorAccessibility.ts]
+var Generic;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 new function C(x) {
     _class_call_check(this, C), this.x = x;
@@ -6,7 +7,7 @@ new function C(x) {
     _class_call_check(this, D), this.x = x;
 }(1), new function E(x) {
     _class_call_check(this, E), this.x = x;
-}(1), new function C(x) {
+}(1), Generic || (Generic = {}), new function C(x) {
     _class_call_check(this, C), this.x = x;
 }(1), new function D(x) {
     _class_call_check(this, D), this.x = x;
diff --git a/crates/swc/tests/tsc-references/classDoesNotDependOnPrivateMember.2.minified.js b/crates/swc/tests/tsc-references/classDoesNotDependOnPrivateMember.2.minified.js
index 9f6290df0551..379c2d3ea27b 100644
--- a/crates/swc/tests/tsc-references/classDoesNotDependOnPrivateMember.2.minified.js
+++ b/crates/swc/tests/tsc-references/classDoesNotDependOnPrivateMember.2.minified.js
@@ -1,2 +1,6 @@
 //// [classDoesNotDependOnPrivateMember.ts]
+var M;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
+(M || (M = {})).C = function C() {
+    _class_call_check(this, C);
+};
diff --git a/crates/swc/tests/tsc-references/classExpression.2.minified.js b/crates/swc/tests/tsc-references/classExpression.2.minified.js
index 2c293eec9a29..6e9cfdcbcc09 100644
--- a/crates/swc/tests/tsc-references/classExpression.2.minified.js
+++ b/crates/swc/tests/tsc-references/classExpression.2.minified.js
@@ -1,2 +1,4 @@
 //// [classExpression.ts]
+var M;
 import "@swc/helpers/_/_class_call_check";
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/classExtendsItselfIndirectly2.2.minified.js b/crates/swc/tests/tsc-references/classExtendsItselfIndirectly2.2.minified.js
index f333f50e2c65..17695e5cc4ce 100644
--- a/crates/swc/tests/tsc-references/classExtendsItselfIndirectly2.2.minified.js
+++ b/crates/swc/tests/tsc-references/classExtendsItselfIndirectly2.2.minified.js
@@ -2,7 +2,7 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var M, D, N, E, P, Q, C2, P1, D2, Q1, E2, M1, N1, C = function(_N_E) {
+var M, D, N, E, P, Q, C2, P1, D2, Q1, E2, M1, N1, O, C = function(_N_E) {
     _inherits(C, _N_E);
     var _super = _create_super(C);
     function C() {
@@ -10,35 +10,35 @@ var M, D, N, E, P, Q, C2, P1, D2, Q1, E2, M1, N1, C = function(_N_E) {
     }
     return C;
 }(N1.E);
-M = M1 = {}, D = function(C) {
+M = M1 || (M1 = {}), D = function(C) {
     _inherits(D, C);
     var _super = _create_super(D);
     function D() {
         return _class_call_check(this, D), _super.apply(this, arguments);
     }
     return D;
-}(C), M.D = D, N = N1 = {}, E = function(_M_D) {
+}(C), M.D = D, N = N1 || (N1 = {}), E = function(_M_D) {
     _inherits(E, _M_D);
     var _super = _create_super(E);
     function E() {
         return _class_call_check(this, E), _super.apply(this, arguments);
     }
     return E;
-}(M1.D), N.E = E, C2 = function(_Q_E2) {
+}(M1.D), N.E = E, O || (O = {}), C2 = function(_Q_E2) {
     _inherits(C2, _Q_E2);
     var _super = _create_super(C2);
     function C2() {
         return _class_call_check(this, C2), _super.apply(this, arguments);
     }
     return C2;
-}(Q.E2), P1 = P = {}, D2 = function(C2) {
+}(Q.E2), P1 = P || (P = {}), D2 = function(C2) {
     _inherits(D2, C2);
     var _super = _create_super(D2);
     function D2() {
         return _class_call_check(this, D2), _super.apply(this, arguments);
     }
     return D2;
-}(C2), P1.D2 = D2, Q1 = Q = {}, E2 = function(_P_D2) {
+}(C2), P1.D2 = D2, Q1 = Q || (Q = {}), E2 = function(_P_D2) {
     _inherits(E2, _P_D2);
     var _super = _create_super(E2);
     function E2() {
diff --git a/crates/swc/tests/tsc-references/classExtendsShadowedConstructorFunction.2.minified.js b/crates/swc/tests/tsc-references/classExtendsShadowedConstructorFunction.2.minified.js
index a1d7657d909b..4a58207d8123 100644
--- a/crates/swc/tests/tsc-references/classExtendsShadowedConstructorFunction.2.minified.js
+++ b/crates/swc/tests/tsc-references/classExtendsShadowedConstructorFunction.2.minified.js
@@ -1,4 +1,6 @@
 //// [classExtendsShadowedConstructorFunction.ts]
+var M;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/classWithConstructors.2.minified.js b/crates/swc/tests/tsc-references/classWithConstructors.2.minified.js
index b9397eceaa47..416cb7392c10 100644
--- a/crates/swc/tests/tsc-references/classWithConstructors.2.minified.js
+++ b/crates/swc/tests/tsc-references/classWithConstructors.2.minified.js
@@ -1,9 +1,9 @@
 //// [classWithConstructors.ts]
-var C, C2, D, C1, C21, D1;
+var NonGeneric, Generics, C, C2, D, C1, C21, D1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-new (C = function C(x) {
+NonGeneric || (NonGeneric = {}), new (C = function C(x) {
     _class_call_check(this, C);
 })(), new C(''), new (C2 = function C2(x) {
     _class_call_check(this, C2);
@@ -14,7 +14,7 @@ new (C = function C(x) {
         return _class_call_check(this, D), _super.apply(this, arguments);
     }
     return D;
-}(C2))(), new D(1), new D(''), new (C1 = function C(x) {
+}(C2))(), new D(1), new D(''), Generics || (Generics = {}), new (C1 = function C(x) {
     _class_call_check(this, C);
 })(), new C1(''), new (C21 = function C2(x) {
     _class_call_check(this, C2);
diff --git a/crates/swc/tests/tsc-references/commonJSImportNotAsPrimaryExpression.2.minified.js b/crates/swc/tests/tsc-references/commonJSImportNotAsPrimaryExpression.2.minified.js
index d78a7944866a..c18d2b9820d4 100644
--- a/crates/swc/tests/tsc-references/commonJSImportNotAsPrimaryExpression.2.minified.js
+++ b/crates/swc/tests/tsc-references/commonJSImportNotAsPrimaryExpression.2.minified.js
@@ -17,7 +17,7 @@ Object.defineProperty(exports, "__esModule", {
 var E1, E11, _class_call_check = require("@swc/helpers/_/_class_call_check"), C1 = function C1() {
     _class_call_check._(this, C1), this.m1 = 42;
 };
-C1.s1 = !0, (E1 = E11 = {})[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C";
+C1.s1 = !0, (E1 = E11 || (E11 = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C";
 //// [foo_1.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipPrimitiveType.2.minified.js b/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipPrimitiveType.2.minified.js
index 7dd4a21be2a3..aa63e51eda85 100644
--- a/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipPrimitiveType.2.minified.js
+++ b/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipPrimitiveType.2.minified.js
@@ -1,3 +1,3 @@
 //// [comparisonOperatorWithNoRelationshipPrimitiveType.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipTypeParameter.2.minified.js b/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipTypeParameter.2.minified.js
index 49a884766ff8..17c17241fa66 100644
--- a/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipTypeParameter.2.minified.js
+++ b/crates/swc/tests/tsc-references/comparisonOperatorWithNoRelationshipTypeParameter.2.minified.js
@@ -1,3 +1,3 @@
 //// [comparisonOperatorWithNoRelationshipTypeParameter.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsAny.2.minified.js b/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsAny.2.minified.js
index 744a53149ee4..67b426464867 100644
--- a/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsAny.2.minified.js
+++ b/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsAny.2.minified.js
@@ -1,3 +1,3 @@
 //// [comparisonOperatorWithOneOperandIsAny.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsUndefined.2.minified.js b/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsUndefined.2.minified.js
index 82faa09c6cf5..4112127cf614 100644
--- a/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsUndefined.2.minified.js
+++ b/crates/swc/tests/tsc-references/comparisonOperatorWithOneOperandIsUndefined.2.minified.js
@@ -1,3 +1,3 @@
 //// [comparisonOperatorWithOneOperandIsUndefined.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/comparisonOperatorWithSubtypeEnumAndNumber.2.minified.js b/crates/swc/tests/tsc-references/comparisonOperatorWithSubtypeEnumAndNumber.2.minified.js
index 89086c09d00e..7794dd7f9aec 100644
--- a/crates/swc/tests/tsc-references/comparisonOperatorWithSubtypeEnumAndNumber.2.minified.js
+++ b/crates/swc/tests/tsc-references/comparisonOperatorWithSubtypeEnumAndNumber.2.minified.js
@@ -1,3 +1,3 @@
 //// [comparisonOperatorWithSubtypeEnumAndNumber.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCanBeAssigned.2.minified.js b/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCanBeAssigned.2.minified.js
index 8ddd15192595..b3fceee5d403 100644
--- a/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCanBeAssigned.2.minified.js
+++ b/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCanBeAssigned.2.minified.js
@@ -1,3 +1,3 @@
 //// [compoundAdditionAssignmentLHSCanBeAssigned.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCannotBeAssigned.2.minified.js b/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCannotBeAssigned.2.minified.js
index 346b9b8a9656..fb2a1b6cdbc5 100644
--- a/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCannotBeAssigned.2.minified.js
+++ b/crates/swc/tests/tsc-references/compoundAdditionAssignmentLHSCannotBeAssigned.2.minified.js
@@ -1,3 +1,3 @@
 //// [compoundAdditionAssignmentLHSCannotBeAssigned.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/compoundAdditionAssignmentWithInvalidOperands.2.minified.js b/crates/swc/tests/tsc-references/compoundAdditionAssignmentWithInvalidOperands.2.minified.js
index 0ad94623e7e2..8cdd8fee4bd1 100644
--- a/crates/swc/tests/tsc-references/compoundAdditionAssignmentWithInvalidOperands.2.minified.js
+++ b/crates/swc/tests/tsc-references/compoundAdditionAssignmentWithInvalidOperands.2.minified.js
@@ -1,3 +1,3 @@
 //// [compoundAdditionAssignmentWithInvalidOperands.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames19_ES5.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames19_ES5.2.minified.js
index 9997c7777b31..db8c3813778f 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames19_ES5.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames19_ES5.2.minified.js
@@ -1,5 +1,6 @@
 //// [computedPropertyNames19_ES5.ts]
+var M;
 import { _ as _define_property } from "@swc/helpers/_/_define_property";
 !function(M) {
     _define_property({}, this.bar, 0);
-}(0);
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames19_ES6.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames19_ES6.2.minified.js
index a7d57994e515..20b2b1d03754 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames19_ES6.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames19_ES6.2.minified.js
@@ -1,4 +1,5 @@
 //// [computedPropertyNames19_ES6.ts]
+var M;
 !function(M) {
     this.bar;
-}(0);
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames47_ES5.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames47_ES5.2.minified.js
index 1410bc1b5ce5..04fcbe64ec3f 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames47_ES5.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames47_ES5.2.minified.js
@@ -1,4 +1,4 @@
 //// [computedPropertyNames47_ES5.ts]
-var E1, E2;
+var E1, E2, E11, E21;
 import { _ as _define_property } from "@swc/helpers/_/_define_property";
-(E1 = {})[E1.x = 0] = "x", (E2 = {})[E2.x = 0] = "x", _define_property({}, 0, 0);
+(E11 = E1 || (E1 = {}))[E11.x = 0] = "x", (E21 = E2 || (E2 = {}))[E21.x = 0] = "x", _define_property({}, 0, 0);
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames47_ES6.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames47_ES6.2.minified.js
index 27bedc1cf396..21cd63781374 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames47_ES6.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames47_ES6.2.minified.js
@@ -1,3 +1,3 @@
 //// [computedPropertyNames47_ES6.ts]
-var E1, E2;
-(E1 = {})[E1.x = 0] = "x", (E2 = {})[E2.x = 0] = "x";
+var E1, E2, E11, E21;
+(E11 = E1 || (E1 = {}))[E11.x = 0] = "x", (E21 = E2 || (E2 = {}))[E21.x = 0] = "x";
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames48_ES5.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames48_ES5.2.minified.js
index 854435487c61..69a37aa0b49c 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames48_ES5.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames48_ES5.2.minified.js
@@ -1,4 +1,4 @@
 //// [computedPropertyNames48_ES5.ts]
-var a, E;
+var E, a, E1;
 import { _ as _define_property } from "@swc/helpers/_/_define_property";
-(E = {})[E.x = 0] = "x", extractIndexer(_define_property({}, a, "")), extractIndexer(_define_property({}, 0, "")), extractIndexer(_define_property({}, 0, ""));
+(E1 = E || (E = {}))[E1.x = 0] = "x", extractIndexer(_define_property({}, a, "")), extractIndexer(_define_property({}, 0, "")), extractIndexer(_define_property({}, 0, ""));
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames48_ES6.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames48_ES6.2.minified.js
index e801120b851e..1b8ed78fd5a7 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames48_ES6.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames48_ES6.2.minified.js
@@ -1,6 +1,6 @@
 //// [computedPropertyNames48_ES6.ts]
-var a, E;
-(E = {})[E.x = 0] = "x", extractIndexer({
+var E, a, E1;
+(E1 = E || (E = {}))[E1.x = 0] = "x", extractIndexer({
     [a]: ""
 }), extractIndexer({
     0: ""
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames7_ES5.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames7_ES5.2.minified.js
index 8865b81a09c0..ad39adae6361 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames7_ES5.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames7_ES5.2.minified.js
@@ -1,4 +1,4 @@
 //// [computedPropertyNames7_ES5.ts]
-var E;
+var E, E1;
 import { _ as _define_property } from "@swc/helpers/_/_define_property";
-(E = {})[E.member = 0] = "member", _define_property({}, 0, 0);
+(E1 = E || (E = {}))[E1.member = 0] = "member", _define_property({}, 0, 0);
diff --git a/crates/swc/tests/tsc-references/computedPropertyNames7_ES6.2.minified.js b/crates/swc/tests/tsc-references/computedPropertyNames7_ES6.2.minified.js
index 17fd73d81800..05c4be82d83f 100644
--- a/crates/swc/tests/tsc-references/computedPropertyNames7_ES6.2.minified.js
+++ b/crates/swc/tests/tsc-references/computedPropertyNames7_ES6.2.minified.js
@@ -1,3 +1,3 @@
 //// [computedPropertyNames7_ES6.ts]
-var E;
-(E = {})[E.member = 0] = "member";
+var E, E1;
+(E1 = E || (E = {}))[E1.member = 0] = "member";
diff --git a/crates/swc/tests/tsc-references/constEnum2.2.minified.js b/crates/swc/tests/tsc-references/constEnum2.2.minified.js
index a27a7adae19b..c0d8d1a52917 100644
--- a/crates/swc/tests/tsc-references/constEnum2.2.minified.js
+++ b/crates/swc/tests/tsc-references/constEnum2.2.minified.js
@@ -1,3 +1,3 @@
 //// [constEnum2.ts]
-var D;
-(D = {})[D.e = 199 * Math.floor(1000 * Math.random())] = "e", D[D.f = 10 - 100 * Math.floor(Math.random() % 8)] = "f", D[D.g = 0] = "g";
+var D, D1;
+(D1 = D || (D = {}))[D1.e = 199 * Math.floor(1000 * Math.random())] = "e", D1[D1.f = 10 - 100 * Math.floor(Math.random() % 8)] = "f", D1[D1.g = 0] = "g";
diff --git a/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance.2.minified.js b/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance.2.minified.js
index d158ae2ec3ea..7f871b5b0893 100644
--- a/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance.2.minified.js
+++ b/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance.2.minified.js
@@ -1,2 +1,3 @@
 //// [constructSignatureAssignabilityInInheritance.ts]
-new (void 0).a(1);
+var MemberWithConstructSignature;
+MemberWithConstructSignature || (MemberWithConstructSignature = {}), new (void 0).a(1);
diff --git a/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance3.2.minified.js b/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance3.2.minified.js
index 9f6d00598a1f..6d607befadfb 100644
--- a/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance3.2.minified.js
+++ b/crates/swc/tests/tsc-references/constructSignatureAssignabilityInInheritance3.2.minified.js
@@ -1,4 +1,6 @@
 //// [constructSignatureAssignabilityInInheritance3.ts]
+var Errors;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Errors || (Errors = {});
diff --git a/crates/swc/tests/tsc-references/constructorHasPrototypeProperty.2.minified.js b/crates/swc/tests/tsc-references/constructorHasPrototypeProperty.2.minified.js
index 7739a199a9ec..e1775c24769c 100644
--- a/crates/swc/tests/tsc-references/constructorHasPrototypeProperty.2.minified.js
+++ b/crates/swc/tests/tsc-references/constructorHasPrototypeProperty.2.minified.js
@@ -1,9 +1,9 @@
 //// [constructorHasPrototypeProperty.ts]
-var C, D, C1, D1;
+var NonGeneric, Generic, C, D, C1, D1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-D = function(C) {
+NonGeneric || (NonGeneric = {}), D = function(C) {
     _inherits(D, C);
     var _super = _create_super(D);
     function D() {
@@ -12,7 +12,7 @@ D = function(C) {
     return D;
 }(C = function C() {
     _class_call_check(this, C);
-}), C.prototype.foo, D.prototype.bar, D1 = function(C) {
+}), C.prototype.foo, D.prototype.bar, Generic || (Generic = {}), D1 = function(C) {
     _inherits(D, C);
     var _super = _create_super(D);
     function D() {
diff --git a/crates/swc/tests/tsc-references/declarationsAndAssignments.2.minified.js b/crates/swc/tests/tsc-references/declarationsAndAssignments.2.minified.js
index d3431e528cab..16ebbe31be5b 100644
--- a/crates/swc/tests/tsc-references/declarationsAndAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/declarationsAndAssignments.2.minified.js
@@ -1,5 +1,5 @@
 //// [declarationsAndAssignments.ts]
-var M;
+var M, M1;
 import "@swc/helpers/_/_object_destructuring_empty";
 import { _ as _sliced_to_array } from "@swc/helpers/_/_sliced_to_array";
 import "@swc/helpers/_/_to_array";
@@ -35,7 +35,7 @@ f14([
             y: !1
         }
     ]
-]), (M = {}).a = 1, M.b = 2, f17({}), f17({
+]), (M1 = M || (M = {})).a = 1, M1.b = 2, f17({}), f17({
     a: "hello"
 }), f17({
     c: !0
diff --git a/crates/swc/tests/tsc-references/decoratorOnClassMethod11.2.minified.js b/crates/swc/tests/tsc-references/decoratorOnClassMethod11.2.minified.js
index bddbff911a8d..ccf5586923dd 100644
--- a/crates/swc/tests/tsc-references/decoratorOnClassMethod11.2.minified.js
+++ b/crates/swc/tests/tsc-references/decoratorOnClassMethod11.2.minified.js
@@ -1,4 +1,5 @@
 //// [decoratorOnClassMethod11.ts]
+var M;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _ts_decorate } from "@swc/helpers/_/_ts_decorate";
 !function(M) {
@@ -12,4 +13,4 @@ import { _ as _ts_decorate } from "@swc/helpers/_/_ts_decorate";
     _ts_decorate([
         this.decorator
     ], C.prototype, "method", null);
-}(0);
+}(M || (M = {}));
diff --git a/crates/swc/tests/tsc-references/decoratorOnClassMethod12.2.minified.js b/crates/swc/tests/tsc-references/decoratorOnClassMethod12.2.minified.js
index 413e1a736a51..cd29930ef76e 100644
--- a/crates/swc/tests/tsc-references/decoratorOnClassMethod12.2.minified.js
+++ b/crates/swc/tests/tsc-references/decoratorOnClassMethod12.2.minified.js
@@ -1,10 +1,10 @@
 //// [decoratorOnClassMethod12.ts]
-var C;
+var M, C;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
 import { _ as _ts_decorate } from "@swc/helpers/_/_ts_decorate";
-C = function(S) {
+M || (M = {}), C = function(S) {
     _inherits(C, S);
     var _super = _create_super(C);
     function C() {
diff --git a/crates/swc/tests/tsc-references/decrementOperatorWithAnyOtherType.2.minified.js b/crates/swc/tests/tsc-references/decrementOperatorWithAnyOtherType.2.minified.js
index 0066448d2047..bfe4e4119650 100644
--- a/crates/swc/tests/tsc-references/decrementOperatorWithAnyOtherType.2.minified.js
+++ b/crates/swc/tests/tsc-references/decrementOperatorWithAnyOtherType.2.minified.js
@@ -7,7 +7,7 @@ var ANY, ANY1, M, ANY2 = [
     x: 1,
     y: null
 };
-M = {};
+M || (M = {});
 var objA = new function A() {
     _class_call_check(this, A);
 }();
diff --git a/crates/swc/tests/tsc-references/decrementOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/decrementOperatorWithEnumType.2.minified.js
index 23f35f0fbc26..5946247a8de7 100644
--- a/crates/swc/tests/tsc-references/decrementOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/decrementOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [decrementOperatorWithEnumType.ts]
 var ENUM1, ENUM11;
-(ENUM11 = ENUM1 = {})[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", --ENUM1.A, ENUM1.A--, --ENUM1.A, ENUM1[A]--;
+(ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", --ENUM1.A, ENUM1.A--, --ENUM1.A, ENUM1[A]--;
diff --git a/crates/swc/tests/tsc-references/decrementOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/decrementOperatorWithNumberType.2.minified.js
index 0f393327ca43..faac5ac6d9a9 100644
--- a/crates/swc/tests/tsc-references/decrementOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/decrementOperatorWithNumberType.2.minified.js
@@ -4,7 +4,7 @@ var NUMBER, M, NUMBER1 = [
     1,
     2
 ];
-M = {};
+M || (M = {});
 var objA = new function A() {
     _class_call_check(this, A);
 }();
diff --git a/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=es5).2.minified.js b/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=es5).2.minified.js
index dc96c0608074..4e9eeb790eee 100644
--- a/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=es5).2.minified.js
+++ b/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=es5).2.minified.js
@@ -1,5 +1,5 @@
 //// [destructuringObjectBindingPatternAndAssignment7.ts]
 import { _ as _define_property } from "@swc/helpers/_/_define_property";
-(K = {}).a = "a", K.b = "b";
-var K, _obj, _ref = (_define_property(_obj = {}, "a", 1), _define_property(_obj, "b", 1), _obj);
+(K = K1 || (K1 = {})).a = "a", K.b = "b";
+var K, _obj, K1, _ref = (_define_property(_obj = {}, "a", 1), _define_property(_obj, "b", 1), _obj);
 console.log(_ref.a, _ref.b);
diff --git a/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=esnext).2.minified.js b/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=esnext).2.minified.js
index fc97d01c4b1b..70138587b574 100644
--- a/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=esnext).2.minified.js
+++ b/crates/swc/tests/tsc-references/destructuringObjectBindingPatternAndAssignment7(target=esnext).2.minified.js
@@ -1,6 +1,6 @@
 //// [destructuringObjectBindingPatternAndAssignment7.ts]
-var K;
-(K = {}).a = "a", K.b = "b";
+var K, K1;
+(K1 = K || (K = {})).a = "a", K1.b = "b";
 const { a: aVal, b: bVal } = {
     a: 1,
     b: 1
diff --git a/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5.2.minified.js b/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5.2.minified.js
index 5ddcd1af188e..c535e0778345 100644
--- a/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5.2.minified.js
+++ b/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5.2.minified.js
@@ -1,5 +1,5 @@
 //// [destructuringParameterDeclaration3ES5.ts]
-var E, array = [
+var E, E1, array = [
     1,
     2,
     3
@@ -19,4 +19,4 @@ var E, array = [
 ]), function([a, b, c, ...x]) {}([
     1,
     2
-]), (E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+]), (E = E1 || (E1 = {}))[E.a = 0] = "a", E[E.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5iterable.2.minified.js b/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5iterable.2.minified.js
index 973f9d18f198..fd3f62c15878 100644
--- a/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5iterable.2.minified.js
+++ b/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES5iterable.2.minified.js
@@ -6,7 +6,7 @@ function a10(param) {
     var _param = _to_array(param), _param_ = (_param[0], _param[1], _sliced_to_array(_param[2], 1));
     _sliced_to_array(_param_[0], 1)[0], _param.slice(3);
 }
-var _param, _param_, _param1, E, array = [
+var _param, _param_, _param1, E, E1, array = [
     1,
     2,
     3
@@ -53,4 +53,4 @@ function foo1() {
 ]), (_param1 = _to_array([
     1,
     2
-]))[0], _param1[1], _param1[2], _param1.slice(3), foo("hello", 1, 2), foo("hello", "world"), (E = {})[E.a = 0] = "a", E[E.b = 1] = "b", foo1(1, 2, 3, 0), foo1(1, 2, 3, 0, 1);
+]))[0], _param1[1], _param1[2], _param1.slice(3), foo("hello", 1, 2), foo("hello", "world"), (E = E1 || (E1 = {}))[E.a = 0] = "a", E[E.b = 1] = "b", foo1(1, 2, 3, 0), foo1(1, 2, 3, 0, 1);
diff --git a/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES6.2.minified.js b/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES6.2.minified.js
index 40d095820722..b95d9e1d8b75 100644
--- a/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES6.2.minified.js
+++ b/crates/swc/tests/tsc-references/destructuringParameterDeclaration3ES6.2.minified.js
@@ -1,5 +1,5 @@
 //// [destructuringParameterDeclaration3ES6.ts]
-var E, array = [
+var E, E1, array = [
     1,
     2,
     3
@@ -19,4 +19,4 @@ var E, array = [
 ]), function([a, b, c, ...x]) {}([
     1,
     2
-]), (E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+]), (E = E1 || (E1 = {}))[E.a = 0] = "a", E[E.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/duplicateStringIndexers.2.minified.js b/crates/swc/tests/tsc-references/duplicateStringIndexers.2.minified.js
index 970896b52a5e..9eef58876446 100644
--- a/crates/swc/tests/tsc-references/duplicateStringIndexers.2.minified.js
+++ b/crates/swc/tests/tsc-references/duplicateStringIndexers.2.minified.js
@@ -1,2 +1,4 @@
 //// [duplicateStringIndexers.ts]
+var test;
 import "@swc/helpers/_/_class_call_check";
+test || (test = {});
diff --git a/crates/swc/tests/tsc-references/enumAssignability.2.minified.js b/crates/swc/tests/tsc-references/enumAssignability.2.minified.js
index 060b33da3a7a..819663176ecc 100644
--- a/crates/swc/tests/tsc-references/enumAssignability.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumAssignability.2.minified.js
@@ -1,4 +1,4 @@
 //// [enumAssignability.ts]
-var E, F;
+var E, F, E1, F1, Others;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A", (F = {})[F.B = 0] = "B";
+(E = E1 || (E1 = {}))[E.A = 0] = "A", (F = F1 || (F1 = {}))[F.B = 0] = "B", Others || (Others = {});
diff --git a/crates/swc/tests/tsc-references/enumAssignabilityInInheritance.2.minified.js b/crates/swc/tests/tsc-references/enumAssignabilityInInheritance.2.minified.js
index c58dcc974f75..0ea39c8e77fc 100644
--- a/crates/swc/tests/tsc-references/enumAssignabilityInInheritance.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumAssignabilityInInheritance.2.minified.js
@@ -1,8 +1,8 @@
 //// [enumAssignabilityInInheritance.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.A = 0] = "A", foo(0), foo(1), foo(null), foo2(0), foo3(0), foo4(0), foo5(0), foo6(0), foo7(0), foo8(0), foo9(0), foo10(0), foo11(0), foo12(0), (E2 = {})[E2.A = 0] = "A", foo13(0), (f || (f = {})).bar = 1, foo14(0);
-var E, E2, CC = function CC() {
+(E = E1 || (E1 = {}))[E.A = 0] = "A", foo(0), foo(1), foo(null), foo2(0), foo3(0), foo4(0), foo5(0), foo6(0), foo7(0), foo8(0), foo9(0), foo10(0), foo11(0), foo12(0), (E2 = E21 || (E21 = {}))[E2.A = 0] = "A", foo13(0), (f || (f = {})).bar = 1, foo14(0);
+var E, E2, E1, E21, CC = function CC() {
     _class_call_check(this, CC);
 };
 (CC || (CC = {})).bar = 1, foo15(0), foo16(0), foo16(0);
diff --git a/crates/swc/tests/tsc-references/enumBasics.2.minified.js b/crates/swc/tests/tsc-references/enumBasics.2.minified.js
index 21e0fe1a7fb1..c8e0e8e104e9 100644
--- a/crates/swc/tests/tsc-references/enumBasics.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumBasics.2.minified.js
@@ -1,3 +1,4 @@
 //// [enumBasics.ts]
-var E2, E3, E4, E5, E6, E7, E8, E9, E1, E11, E31, E41, E71, E81;
-(E1 = E11 = {})[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C", E11[E11.A], (E2 = {})[E2.A = 1] = "A", E2[E2.B = 2] = "B", E2[E2.C = 3] = "C", (E3 = E31 = {})[E3.X = 3] = "X", E3[E3.Y = 7] = "Y", E3[E3.Z = NaN] = "Z", (E4 = E41 = {})[E4.X = 0] = "X", E4[E4.Y = 1] = "Y", E4[E4.Z = 3] = "Z", (E5 = {})[E5.A = 0] = "A", E5[E5.B = 3] = "B", E5[E5.C = 4] = "C", (E6 = {})[E6.A = 0] = "A", E6[E6.B = 0] = "B", E6[E6.C = 1] = "C", (E7 = E71 = {})[E7.A = 'foo'.foo] = "A", (E8 = E81 = {})[E8.B = 'foo'.foo] = "B", (E9 = {})[E9.A = 0] = "A", E9[E9.B = 0] = "B", E81.B, E71.A, E41.Z, E31.X, E31.Z;
+(E1 = E11 || (E11 = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C";
+var E2, E3, E4, E5, E6, E7, E8, E9, E1, E11, E21, E31, E41, E51, E61, E71, E81, E91, e = E11;
+E11[e.A], (E2 = E21 || (E21 = {}))[E2.A = 1] = "A", E2[E2.B = 2] = "B", E2[E2.C = 3] = "C", (E3 = E31 || (E31 = {}))[E3.X = 3] = "X", E3[E3.Y = 7] = "Y", E3[E3.Z = NaN] = "Z", (E4 = E41 || (E41 = {}))[E4.X = 0] = "X", E4[E4.Y = 1] = "Y", E4[E4.Z = 3] = "Z", (E5 = E51 || (E51 = {}))[E5.A = 0] = "A", E5[E5.B = 3] = "B", E5[E5.C = 4] = "C", (E6 = E61 || (E61 = {}))[E6.A = 0] = "A", E6[E6.B = 0] = "B", E6[E6.C = 1] = "C", (E7 = E71 || (E71 = {}))[E7.A = 'foo'.foo] = "A", (E8 = E81 || (E81 = {}))[E8.B = 'foo'.foo] = "B", (E9 = E91 || (E91 = {}))[E9.A = 0] = "A", E9[E9.B = 0] = "B", E81.B, E71.A, E41.Z, E31.X, E31.Z;
diff --git a/crates/swc/tests/tsc-references/enumClassification.2.minified.js b/crates/swc/tests/tsc-references/enumClassification.2.minified.js
index ce3d70f0c9a4..c503e75ba576 100644
--- a/crates/swc/tests/tsc-references/enumClassification.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumClassification.2.minified.js
@@ -1,3 +1,3 @@
 //// [enumClassification.ts]
-var E01, E02, E04, E05, E06, E07, E08, E11, E12, E20;
-(E01 = {})[E01.A = 0] = "A", (E02 = {})[E02.A = 123] = "A", (E04 = {})[E04.A = 0] = "A", E04[E04.B = 1] = "B", E04[E04.C = 2] = "C", (E05 = {})[E05.A = 0] = "A", E05[E05.B = 10] = "B", E05[E05.C = 11] = "C", (E06 = {}).A = "one", E06.B = "two", E06.C = "three", (E07 = {})[E07.A = 0] = "A", E07[E07.B = 1] = "B", E07.C = "hi", E07[E07.D = 10] = "D", E07[E07.E = 11] = "E", E07.F = "bye", (E08 = {})[E08.A = 10] = "A", E08.B = "hello", E08[E08.C = 10] = "C", E08.D = "hello", E08[E08.E = 10] = "E", (E11 = {})[E11.A = 0] = "A", E11[E11.B = 1] = "B", E11[E11.C = 2] = "C", (E12 = {})[E12.A = 1] = "A", E12[E12.B = 2] = "B", E12[E12.C = 4] = "C", (E20 = {})[E20.A = 3] = "A", E20[E20.B = E20.A + 1] = "B", E20[E20.C = 123] = "C", E20[E20.D = 0.8414709848078965] = "D";
+var E01, E02, E03, E04, E05, E06, E07, E08, E10, E11, E12, E20, E011, E021, E041, E051, E061, E071, E081, E111, E121, E201;
+(E011 = E01 || (E01 = {}))[E011.A = 0] = "A", (E021 = E02 || (E02 = {}))[E021.A = 123] = "A", (E03 || (E03 = {})).A = "hello", (E041 = E04 || (E04 = {}))[E041.A = 0] = "A", E041[E041.B = 1] = "B", E041[E041.C = 2] = "C", (E051 = E05 || (E05 = {}))[E051.A = 0] = "A", E051[E051.B = 10] = "B", E051[E051.C = 11] = "C", (E061 = E06 || (E06 = {})).A = "one", E061.B = "two", E061.C = "three", (E071 = E07 || (E07 = {}))[E071.A = 0] = "A", E071[E071.B = 1] = "B", E071.C = "hi", E071[E071.D = 10] = "D", E071[E071.E = 11] = "E", E071.F = "bye", (E081 = E08 || (E08 = {}))[E081.A = 10] = "A", E081.B = "hello", E081[E081.C = 10] = "C", E081.D = "hello", E081[E081.E = 10] = "E", E10 || (E10 = {}), (E111 = E11 || (E11 = {}))[E111.A = 0] = "A", E111[E111.B = 1] = "B", E111[E111.C = 2] = "C", (E121 = E12 || (E12 = {}))[E121.A = 1] = "A", E121[E121.B = 2] = "B", E121[E121.C = 4] = "C", (E201 = E20 || (E20 = {}))[E201.A = 3] = "A", E201[E201.B = E201.A + 1] = "B", E201[E201.C = 123] = "C", E201[E201.D = 0.8414709848078965] = "D";
diff --git a/crates/swc/tests/tsc-references/enumConstantMemberWithString.2.minified.js b/crates/swc/tests/tsc-references/enumConstantMemberWithString.2.minified.js
index 43ce6de10212..79e3fbf55c30 100644
--- a/crates/swc/tests/tsc-references/enumConstantMemberWithString.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumConstantMemberWithString.2.minified.js
@@ -1,3 +1,3 @@
 //// [enumConstantMemberWithString.ts]
-var T1, T2, T3;
-(T1 = {}).a = "1", T1.b = "12", T1.c = "123", T1[T1.d = NaN] = "d", T1.e = "a1", (T2 = {}).a = "1", T2.b = "12", (T3 = {}).a = "1", T3.b = "12", T3[T3.c = 1] = "c", T3[T3.d = 3] = "d";
+var T1, T2, T3, T4, T5, T11, T21, T31;
+(T11 = T1 || (T1 = {})).a = "1", T11.b = "12", T11.c = "123", T11[T11.d = NaN] = "d", T11.e = "a1", (T21 = T2 || (T2 = {})).a = "1", T21.b = "12", (T31 = T3 || (T3 = {})).a = "1", T31.b = "12", T31[T31.c = 1] = "c", T31[T31.d = 3] = "d", (T4 || (T4 = {})).a = "1", (T5 || (T5 = {})).a = "12";
diff --git a/crates/swc/tests/tsc-references/enumConstantMemberWithStringEmitDeclaration.2.minified.js b/crates/swc/tests/tsc-references/enumConstantMemberWithStringEmitDeclaration.2.minified.js
index 35f4b12257db..3faa6e625d4e 100644
--- a/crates/swc/tests/tsc-references/enumConstantMemberWithStringEmitDeclaration.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumConstantMemberWithStringEmitDeclaration.2.minified.js
@@ -1,3 +1,3 @@
 //// [enumConstantMemberWithStringEmitDeclaration.ts]
-var T1, T2, T3;
-(T1 = {}).a = "1", T1.b = "12", T1.c = "123", (T2 = {}).a = "1", T2.b = "12", (T3 = {}).a = "1", T3.b = "12";
+var T1, T2, T3, T4, T5, T11, T21, T31;
+(T11 = T1 || (T1 = {})).a = "1", T11.b = "12", T11.c = "123", (T21 = T2 || (T2 = {})).a = "1", T21.b = "12", (T31 = T3 || (T3 = {})).a = "1", T31.b = "12", (T4 || (T4 = {})).a = "1", (T5 || (T5 = {})).a = "12";
diff --git a/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiterals.2.minified.js b/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiterals.2.minified.js
index 3b75176ba9ff..ce6ef711efa9 100644
--- a/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiterals.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiterals.2.minified.js
@@ -1,3 +1,3 @@
 //// [enumConstantMemberWithTemplateLiterals.ts]
-var T2, T4, T5, T6;
-(T2 = {}).a = "1", T2.b = "2", T2[T2.c = 3] = "c", (T4 = {}).a = "1", T4.b = "11", T4.c = "12", T4.d = "21", T4.e = "211", (T5 = {}).a = "1", T5.b = "12", T5.c = "123", T5[T5.d = 1] = "d", T5[T5.e = 0] = "e", T5.f = "11", T5.g = "123", T5[T5.h = 1] = "h", (T6 = {})[T6.a = 1] = "a", T6[T6.b = 2] = "b";
+var T1, T2, T3, T4, T5, T6, T21, T41, T51, T61;
+(T1 || (T1 = {})).a = "1", (T21 = T2 || (T2 = {})).a = "1", T21.b = "2", T21[T21.c = 3] = "c", (T3 || (T3 = {})).a = "11", (T41 = T4 || (T4 = {})).a = "1", T41.b = "11", T41.c = "12", T41.d = "21", T41.e = "211", (T51 = T5 || (T5 = {})).a = "1", T51.b = "12", T51.c = "123", T51[T51.d = 1] = "d", T51[T51.e = 0] = "e", T51.f = "11", T51.g = "123", T51[T51.h = 1] = "h", (T61 = T6 || (T6 = {}))[T61.a = 1] = "a", T61[T61.b = 2] = "b";
diff --git a/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiteralsEmitDeclaration.2.minified.js b/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiteralsEmitDeclaration.2.minified.js
index c407e145a914..01de87abdd5d 100644
--- a/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiteralsEmitDeclaration.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumConstantMemberWithTemplateLiteralsEmitDeclaration.2.minified.js
@@ -1,3 +1,3 @@
 //// [enumConstantMemberWithTemplateLiteralsEmitDeclaration.ts]
-var T2, T4, T5, T6;
-(T2 = {}).a = "1", T2.b = "2", T2[T2.c = 3] = "c", (T4 = {}).a = "1", T4.b = "11", T4.c = "12", T4.d = "21", T4.e = "211", (T5 = {}).a = "1", T5.b = "12", T5.c = "123", T5[T5.d = 1] = "d", (T6 = {})[T6.a = 1] = "a", T6[T6.b = 2] = "b";
+var T1, T2, T3, T4, T5, T6, T21, T41, T51, T61;
+(T1 || (T1 = {})).a = "1", (T21 = T2 || (T2 = {})).a = "1", T21.b = "2", T21[T21.c = 3] = "c", (T3 || (T3 = {})).a = "11", (T41 = T4 || (T4 = {})).a = "1", T41.b = "11", T41.c = "12", T41.d = "21", T41.e = "211", (T51 = T5 || (T5 = {})).a = "1", T51.b = "12", T51.c = "123", T51[T51.d = 1] = "d", (T61 = T6 || (T6 = {}))[T61.a = 1] = "a", T61[T61.b = 2] = "b";
diff --git a/crates/swc/tests/tsc-references/enumIsNotASubtypeOfAnythingButNumber.2.minified.js b/crates/swc/tests/tsc-references/enumIsNotASubtypeOfAnythingButNumber.2.minified.js
index 6c3350ac7ff6..8bcec1ecd984 100644
--- a/crates/swc/tests/tsc-references/enumIsNotASubtypeOfAnythingButNumber.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumIsNotASubtypeOfAnythingButNumber.2.minified.js
@@ -1,8 +1,8 @@
 //// [enumIsNotASubtypeOfAnythingButNumber.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.A = 0] = "A", (E2 = {})[E2.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, E2, c = function c() {
+(E = E1 || (E1 = {}))[E.A = 0] = "A", (E2 = E21 || (E21 = {}))[E2.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E2, E1, E21, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/enumMerging.2.minified.js b/crates/swc/tests/tsc-references/enumMerging.2.minified.js
index 73dc41e327c4..e389fba8c45e 100644
--- a/crates/swc/tests/tsc-references/enumMerging.2.minified.js
+++ b/crates/swc/tests/tsc-references/enumMerging.2.minified.js
@@ -1,3 +1,3 @@
 //// [enumMerging.ts]
-var M6, M1, EImpl1, EImpl11, EImpl12, EConst1, EConst11, M2, EComp2, EComp21, EComp22, EInit, EInit1, EInit2, M4, Color, M5, Color1, M61, A, Color2, M62, A1, Color3, A2;
-M1 = {}, (EImpl11 = EImpl1 || (EImpl1 = {}))[EImpl11.A = 0] = "A", EImpl11[EImpl11.B = 1] = "B", EImpl11[EImpl11.C = 2] = "C", (EImpl12 = EImpl1 || (EImpl1 = {}))[EImpl12.D = 1] = "D", EImpl12[EImpl12.E = 2] = "E", EImpl12[EImpl12.F = 3] = "F", (EConst1 = M1.EConst1 || (M1.EConst1 = {}))[EConst1.A = 3] = "A", EConst1[EConst1.B = 2] = "B", EConst1[EConst1.C = 1] = "C", (EConst11 = M1.EConst1 || (M1.EConst1 = {}))[EConst11.D = 7] = "D", EConst11[EConst11.E = 9] = "E", EConst11[EConst11.F = 8] = "F", (EComp21 = EComp2 = (M2 = {}).EComp2 || (M2.EComp2 = {}))[EComp21.A = 3] = "A", EComp21[EComp21.B = 3] = "B", EComp21[EComp21.C = 3] = "C", (EComp22 = EComp2 = M2.EComp2 || (M2.EComp2 = {}))[EComp22.D = 3] = "D", EComp22[EComp22.E = 3] = "E", EComp22[EComp22.F = 3] = "F", EComp2.A, EComp2.B, EComp2.C, EComp2.D, EComp2.E, EComp2.F, (EInit1 = EInit || (EInit = {}))[EInit1.A = 0] = "A", EInit1[EInit1.B = 1] = "B", (EInit2 = EInit || (EInit = {}))[EInit2.C = 1] = "C", EInit2[EInit2.D = 2] = "D", EInit2[EInit2.E = 3] = "E", (Color = (M4 = {}).Color || (M4.Color = {}))[Color.Red = 0] = "Red", Color[Color.Green = 1] = "Green", Color[Color.Blue = 2] = "Blue", (Color1 = (M5 = {}).Color || (M5.Color = {}))[Color1.Red = 0] = "Red", Color1[Color1.Green = 1] = "Green", Color1[Color1.Blue = 2] = "Blue", (Color2 = (A = (M61 = M6 || (M6 = {})).A || (M61.A = {})).Color || (A.Color = {}))[Color2.Red = 0] = "Red", Color2[Color2.Green = 1] = "Green", Color2[Color2.Blue = 2] = "Blue", (Color3 = (A1 = A2 = (M62 = M6 || (M6 = {})).A || (M62.A = {})).Color || (A1.Color = {}))[Color3.Yellow = 1] = "Yellow", A2.Color.Yellow, A2.Color.Red;
+var M1, M2, M3, M4, M5, M6, M11, EImpl1, EImpl11, EImpl12, EConst1, EConst11, M21, EComp2, EComp21, EComp22, EInit, EInit1, EInit2, M41, Color, M51, Color1, M61, A, Color2, M62, A1, Color3, A2;
+M11 = M1 || (M1 = {}), (EImpl11 = EImpl1 || (EImpl1 = {}))[EImpl11.A = 0] = "A", EImpl11[EImpl11.B = 1] = "B", EImpl11[EImpl11.C = 2] = "C", (EImpl12 = EImpl1 || (EImpl1 = {}))[EImpl12.D = 1] = "D", EImpl12[EImpl12.E = 2] = "E", EImpl12[EImpl12.F = 3] = "F", (EConst1 = M11.EConst1 || (M11.EConst1 = {}))[EConst1.A = 3] = "A", EConst1[EConst1.B = 2] = "B", EConst1[EConst1.C = 1] = "C", (EConst11 = M11.EConst1 || (M11.EConst1 = {}))[EConst11.D = 7] = "D", EConst11[EConst11.E = 9] = "E", EConst11[EConst11.F = 8] = "F", (EComp21 = EComp2 = (M21 = M2 || (M2 = {})).EComp2 || (M21.EComp2 = {}))[EComp21.A = 3] = "A", EComp21[EComp21.B = 3] = "B", EComp21[EComp21.C = 3] = "C", (EComp22 = EComp2 = M21.EComp2 || (M21.EComp2 = {}))[EComp22.D = 3] = "D", EComp22[EComp22.E = 3] = "E", EComp22[EComp22.F = 3] = "F", EComp2.A, EComp2.B, EComp2.C, EComp2.D, EComp2.E, EComp2.F, M3 || (M3 = {}), (EInit1 = EInit || (EInit = {}))[EInit1.A = 0] = "A", EInit1[EInit1.B = 1] = "B", (EInit2 = EInit || (EInit = {}))[EInit2.C = 1] = "C", EInit2[EInit2.D = 2] = "D", EInit2[EInit2.E = 3] = "E", (Color = (M41 = M4 || (M4 = {})).Color || (M41.Color = {}))[Color.Red = 0] = "Red", Color[Color.Green = 1] = "Green", Color[Color.Blue = 2] = "Blue", (Color1 = (M51 = M5 || (M5 = {})).Color || (M51.Color = {}))[Color1.Red = 0] = "Red", Color1[Color1.Green = 1] = "Green", Color1[Color1.Blue = 2] = "Blue", (Color2 = (A = (M61 = M6 || (M6 = {})).A || (M61.A = {})).Color || (A.Color = {}))[Color2.Red = 0] = "Red", Color2[Color2.Green = 1] = "Green", Color2[Color2.Blue = 2] = "Blue", (Color3 = (A1 = A2 = (M62 = M6 || (M6 = {})).A || (M62.A = {})).Color || (A1.Color = {}))[Color3.Yellow = 1] = "Yellow", A2.Color.Yellow, A2.Color.Red;
diff --git a/crates/swc/tests/tsc-references/enums.2.minified.js b/crates/swc/tests/tsc-references/enums.2.minified.js
index f61050160588..55b616c85228 100644
--- a/crates/swc/tests/tsc-references/enums.2.minified.js
+++ b/crates/swc/tests/tsc-references/enums.2.minified.js
@@ -1,6 +1,6 @@
 //// [/a.ts]
-var SymbolFlags, SyntaxKind, SymbolFlags1;
-(SyntaxKind = {})[SyntaxKind.ImportClause = 0] = "ImportClause", SyntaxKind[SyntaxKind.ExportDeclaration = 1] = "ExportDeclaration", (SymbolFlags1 = SymbolFlags = {}).Type = "Type", SymbolFlags1.Value = "Value";
+var SyntaxKind, SymbolFlags, SyntaxKind1, SymbolFlags1;
+(SyntaxKind1 = SyntaxKind || (SyntaxKind = {}))[SyntaxKind1.ImportClause = 0] = "ImportClause", SyntaxKind1[SyntaxKind1.ExportDeclaration = 1] = "ExportDeclaration", (SymbolFlags1 = SymbolFlags || (SymbolFlags = {})).Type = "Type", SymbolFlags1.Value = "Value";
 export { SymbolFlags };
 //// [/b.ts]
 SyntaxKind.ImportClause, SymbolFlags.Type;
diff --git a/crates/swc/tests/tsc-references/equalityWithEnumTypes.2.minified.js b/crates/swc/tests/tsc-references/equalityWithEnumTypes.2.minified.js
index 1539a3d7a0a4..08857fc806b6 100644
--- a/crates/swc/tests/tsc-references/equalityWithEnumTypes.2.minified.js
+++ b/crates/swc/tests/tsc-references/equalityWithEnumTypes.2.minified.js
@@ -1,3 +1,3 @@
 //// [equalityWithEnumTypes.ts]
-var E1, E2;
-(E1 = {})[E1.a = 1] = "a", E1[E1.b = 2] = "b", (E2 = {})[E2.a = 1] = "a", E2[E2.b = 2] = "b";
+var E1, E2, E11, E21;
+(E11 = E1 || (E1 = {}))[E11.a = 1] = "a", E11[E11.b = 2] = "b", (E21 = E2 || (E2 = {}))[E21.a = 1] = "a", E21[E21.b = 2] = "b";
diff --git a/crates/swc/tests/tsc-references/everyTypeAssignableToAny.2.minified.js b/crates/swc/tests/tsc-references/everyTypeAssignableToAny.2.minified.js
index a639585b9664..698b1ee53aa4 100644
--- a/crates/swc/tests/tsc-references/everyTypeAssignableToAny.2.minified.js
+++ b/crates/swc/tests/tsc-references/everyTypeAssignableToAny.2.minified.js
@@ -1,4 +1,4 @@
 //// [everyTypeAssignableToAny.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInitializer.2.minified.js b/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInitializer.2.minified.js
index d53662099f11..bc89db106549 100644
--- a/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInitializer.2.minified.js
+++ b/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInitializer.2.minified.js
@@ -3,7 +3,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 var M, M1, C = function C() {
     _class_call_check(this, C);
 };
-(M = M1 = {}).A = function A() {
+(M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInvalidInitializer.2.minified.js b/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInvalidInitializer.2.minified.js
index 1c56c7cd2451..8396bc6a8fe2 100644
--- a/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInvalidInitializer.2.minified.js
+++ b/crates/swc/tests/tsc-references/everyTypeWithAnnotationAndInvalidInitializer.2.minified.js
@@ -1,15 +1,15 @@
 //// [everyTypeWithAnnotationAndInvalidInitializer.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var M, N, N1, C = function C() {
+var M, N, M1, N1, C = function C() {
     _class_call_check(this, C);
 }, D = function D() {
     _class_call_check(this, D);
 };
-(M = {}).A = function A() {
+(M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
-}, (N = N1 = {}).A = function A() {
+}, (N = N1 || (N1 = {})).A = function A() {
     _class_call_check(this, A);
 }, N.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/everyTypeWithInitializer.2.minified.js b/crates/swc/tests/tsc-references/everyTypeWithInitializer.2.minified.js
index 570a6c5a5dfc..ab324fb0f9b2 100644
--- a/crates/swc/tests/tsc-references/everyTypeWithInitializer.2.minified.js
+++ b/crates/swc/tests/tsc-references/everyTypeWithInitializer.2.minified.js
@@ -3,7 +3,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 var M, M1, C = function C() {
     _class_call_check(this, C);
 };
-(M = M1 = {}).A = function A() {
+(M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/exhaustiveSwitchStatements1.2.minified.js b/crates/swc/tests/tsc-references/exhaustiveSwitchStatements1.2.minified.js
index e9e98ed6a585..b64d0c2ef220 100644
--- a/crates/swc/tests/tsc-references/exhaustiveSwitchStatements1.2.minified.js
+++ b/crates/swc/tests/tsc-references/exhaustiveSwitchStatements1.2.minified.js
@@ -1,3 +1,3 @@
 //// [exhaustiveSwitchStatements1.ts]
-var E, MyEnum, Level, Animal;
-(E = {})[E.A = 0] = "A", E[E.B = 1] = "B", (MyEnum = {})[MyEnum.A = 0] = "A", MyEnum[MyEnum.B = 1] = "B", (Level = {})[Level.One = 0] = "One", Level[Level.Two = 1] = "Two", (Animal = {})[Animal.DOG = 0] = "DOG", Animal[Animal.CAT = 1] = "CAT";
+var E, MyEnum, Level, Animal, E1, MyEnum1, Level1, Animal1;
+(E1 = E || (E = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", (MyEnum1 = MyEnum || (MyEnum = {}))[MyEnum1.A = 0] = "A", MyEnum1[MyEnum1.B = 1] = "B", (Level1 = Level || (Level = {}))[Level1.One = 0] = "One", Level1[Level1.Two = 1] = "Two", (Animal1 = Animal || (Animal = {}))[Animal1.DOG = 0] = "DOG", Animal1[Animal1.CAT = 1] = "CAT";
diff --git a/crates/swc/tests/tsc-references/exponentiationOperatorWithEnum.2.minified.js b/crates/swc/tests/tsc-references/exponentiationOperatorWithEnum.2.minified.js
index 005cdf958914..cab6919535c6 100644
--- a/crates/swc/tests/tsc-references/exponentiationOperatorWithEnum.2.minified.js
+++ b/crates/swc/tests/tsc-references/exponentiationOperatorWithEnum.2.minified.js
@@ -1,3 +1,3 @@
 //// [exponentiationOperatorWithEnum.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b";
diff --git a/crates/swc/tests/tsc-references/exponentiationOperatorWithEnumUnion.2.minified.js b/crates/swc/tests/tsc-references/exponentiationOperatorWithEnumUnion.2.minified.js
index 6456f2f49e34..d045847b5614 100644
--- a/crates/swc/tests/tsc-references/exponentiationOperatorWithEnumUnion.2.minified.js
+++ b/crates/swc/tests/tsc-references/exponentiationOperatorWithEnumUnion.2.minified.js
@@ -1,3 +1,3 @@
 //// [exponentiationOperatorWithEnumUnion.ts]
-var E, F;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", (F = {})[F.c = 0] = "c", F[F.d = 1] = "d";
+var E, F, E1, F1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", (F1 = F || (F = {}))[F1.c = 0] = "c", F1[F1.d = 1] = "d";
diff --git a/crates/swc/tests/tsc-references/exponentiationOperatorWithInvalidOperands.2.minified.js b/crates/swc/tests/tsc-references/exponentiationOperatorWithInvalidOperands.2.minified.js
index ce6451b6de2e..6f86587ee6e2 100644
--- a/crates/swc/tests/tsc-references/exponentiationOperatorWithInvalidOperands.2.minified.js
+++ b/crates/swc/tests/tsc-references/exponentiationOperatorWithInvalidOperands.2.minified.js
@@ -1,3 +1,3 @@
 //// [exponentiationOperatorWithInvalidOperands.ts]
-var E;
-(E = {})[E.a = 0] = "a", E[E.b = 1] = "b", E[E.c = 2] = "c";
+var E, E1;
+(E1 = E || (E = {}))[E1.a = 0] = "a", E1[E1.b = 1] = "b", E1[E1.c = 2] = "c";
diff --git a/crates/swc/tests/tsc-references/exportAssignmentAndDeclaration.2.minified.js b/crates/swc/tests/tsc-references/exportAssignmentAndDeclaration.2.minified.js
index fdeead9a64ed..57ebe9dfe0d8 100644
--- a/crates/swc/tests/tsc-references/exportAssignmentAndDeclaration.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportAssignmentAndDeclaration.2.minified.js
@@ -3,8 +3,8 @@ define([
     "require",
     "@swc/helpers/_/_class_call_check"
 ], function(require, _class_call_check) {
-    var E1;
-    return (E1 = {})[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C", function C1() {
+    var E1, E11;
+    return (E1 = E11 || (E11 = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C", function C1() {
         _class_call_check._(this, C1);
     };
 });
diff --git a/crates/swc/tests/tsc-references/exportAssignmentCircularModules.2.minified.js b/crates/swc/tests/tsc-references/exportAssignmentCircularModules.2.minified.js
index 7bf72a0b6980..e8dfa47d707c 100644
--- a/crates/swc/tests/tsc-references/exportAssignmentCircularModules.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportAssignmentCircularModules.2.minified.js
@@ -4,7 +4,7 @@ define([
     "./foo_1"
 ], function(require, _foo_1) {
     var Foo;
-    return (Foo = {}).x = _foo_1.x, Foo;
+    return (Foo || (Foo = {})).x = _foo_1.x, Foo;
 });
 //// [foo_1.ts]
 define([
@@ -12,7 +12,7 @@ define([
     "./foo_2"
 ], function(require, _foo_2) {
     var Foo;
-    return (Foo = {}).x = _foo_2.x, Foo;
+    return (Foo || (Foo = {})).x = _foo_2.x, Foo;
 });
 //// [foo_2.ts]
 define([
@@ -20,5 +20,5 @@ define([
     "./foo_0"
 ], function(require, _foo_0) {
     var Foo;
-    return (Foo = {}).x = _foo_0.x, Foo;
+    return (Foo || (Foo = {})).x = _foo_0.x, Foo;
 });
diff --git a/crates/swc/tests/tsc-references/exportAssignmentTopLevelIdentifier.2.minified.js b/crates/swc/tests/tsc-references/exportAssignmentTopLevelIdentifier.2.minified.js
index 0272105e5b67..d0e6841759d1 100644
--- a/crates/swc/tests/tsc-references/exportAssignmentTopLevelIdentifier.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportAssignmentTopLevelIdentifier.2.minified.js
@@ -3,7 +3,7 @@ define([
     "require"
 ], function(require) {
     var Foo;
-    return (Foo = {}).answer = 42, Foo;
+    return (Foo || (Foo = {})).answer = 42, Foo;
 });
 //// [foo_1.ts]
 define([
diff --git a/crates/swc/tests/tsc-references/exportCodeGen.2.minified.js b/crates/swc/tests/tsc-references/exportCodeGen.2.minified.js
index 62283c6b954d..fe1dbb74193d 100644
--- a/crates/swc/tests/tsc-references/exportCodeGen.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportCodeGen.2.minified.js
@@ -1,6 +1,8 @@
 //// [exportCodeGen.ts]
-var E, Color, Color1;
+var A, B, C, D, E, F, E1, Color, Color1, M, Color2;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(Color = (E = {}).Color || (E.Color = {}))[Color.Red = 0] = "Red", E.fn = function() {}, E.C = function C() {
+(A || (A = {})).x = 12, B || (B = {}), C || (C = {}), (D || (D = {})).yes = function() {
+    return !0;
+}, (Color = (E1 = E || (E = {})).Color || (E1.Color = {}))[Color.Red = 0] = "Red", E1.fn = function() {}, E1.C = function C() {
     _class_call_check(this, C);
-}, (E.M || (E.M = {})).x = 42, (Color1 = {})[Color1.Red = 0] = "Red";
+}, (E1.M || (E1.M = {})).x = 42, F || (F = {}), (Color2 = Color1 || (Color1 = {}))[Color2.Red = 0] = "Red", M || (M = {});
diff --git a/crates/swc/tests/tsc-references/exportImportAlias.2.minified.js b/crates/swc/tests/tsc-references/exportImportAlias.2.minified.js
index 3d3a8420b4ef..045e06badb65 100644
--- a/crates/swc/tests/tsc-references/exportImportAlias.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportImportAlias.2.minified.js
@@ -1,15 +1,15 @@
 //// [exportImportAlias.ts]
 var A, C, X, Z, K, M, A1, K1, L;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(A1 = A = {}).x = 'hello world', A1.Point = function Point(x, y) {
+(A1 = A || (A = {})).x = 'hello world', A1.Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
-}, (C = {}).a = A, C.a.x, new C.a.Point(0, 0), function(X) {
+}, (C || (C = {})).a = A, C.a.x, new C.a.Point(0, 0), function(X) {
     function Y() {
         return 42;
     }
     X.Y = Y, (Y = X.Y || (X.Y = {})).Point = function Point(x, y) {
         _class_call_check(this, Point), this.x = x, this.y = y;
     };
-}(X = {}), (Z = {}).y = X.Y, Z.y(), new Z.y.Point(0, 0), K1 = K = {}, L = function L(name) {
+}(X || (X = {})), (Z || (Z = {})).y = X.Y, Z.y(), new Z.y.Point(0, 0), K1 = K || (K = {}), L = function L(name) {
     _class_call_check(this, L), this.name = name;
-}, K1.L = L, (L = K1.L || (K1.L = {})).y = 12, (M = {}).D = K.L, new M.D('Hello');
+}, K1.L = L, (L = K1.L || (K1.L = {})).y = 12, (M || (M = {})).D = K.L, new M.D('Hello');
diff --git a/crates/swc/tests/tsc-references/exportsAndImports1-amd.2.minified.js b/crates/swc/tests/tsc-references/exportsAndImports1-amd.2.minified.js
index 4753c8465573..923f31346f93 100644
--- a/crates/swc/tests/tsc-references/exportsAndImports1-amd.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportsAndImports1-amd.2.minified.js
@@ -43,8 +43,8 @@ define([
     var C = function C() {
         _class_call_check._(this, C);
     };
-    (E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 = {})[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C";
-    var a = (M = {}).x;
+    (E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 || (D1 = {}))[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C", M || (M = {});
+    var a = M.x;
 });
 //// [t2.ts]
 define([
diff --git a/crates/swc/tests/tsc-references/exportsAndImports1-es6.2.minified.js b/crates/swc/tests/tsc-references/exportsAndImports1-es6.2.minified.js
index e8a887cc866b..4de842a67260 100644
--- a/crates/swc/tests/tsc-references/exportsAndImports1-es6.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportsAndImports1-es6.2.minified.js
@@ -34,8 +34,8 @@ var E, D, E1, D1, M, v = 1;
 function f() {}
 class C {
 }
-(E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 = {})[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C";
-const a = (M = {}).x;
+(E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 || (D1 = {}))[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C", M || (M = {});
+const a = M.x;
 //// [t2.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/exportsAndImports1.2.minified.js b/crates/swc/tests/tsc-references/exportsAndImports1.2.minified.js
index 77861e00e498..59f99317d1f0 100644
--- a/crates/swc/tests/tsc-references/exportsAndImports1.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportsAndImports1.2.minified.js
@@ -35,8 +35,8 @@ function f() {}
 var C = function C() {
     _class_call_check._(this, C);
 };
-(E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 = {})[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C";
-var a = (M = {}).x;
+(E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 || (D1 = {}))[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C", M || (M = {});
+var a = M.x;
 //// [t2.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/exportsAndImports3-amd.2.minified.js b/crates/swc/tests/tsc-references/exportsAndImports3-amd.2.minified.js
index e4c7f2af8d2c..c249b4faba14 100644
--- a/crates/swc/tests/tsc-references/exportsAndImports3-amd.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportsAndImports3-amd.2.minified.js
@@ -64,8 +64,8 @@ define([
     var C = function C() {
         _class_call_check._(this, C);
     };
-    (E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 = {})[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C";
-    var a = (M = {}).x;
+    (E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 || (D1 = {}))[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C", M || (M = {});
+    var a = M.x;
 });
 //// [t2.ts]
 define([
diff --git a/crates/swc/tests/tsc-references/exportsAndImports3-es6.2.minified.js b/crates/swc/tests/tsc-references/exportsAndImports3-es6.2.minified.js
index 2fd6bb613d2a..7882bcc4b594 100644
--- a/crates/swc/tests/tsc-references/exportsAndImports3-es6.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportsAndImports3-es6.2.minified.js
@@ -55,8 +55,8 @@ var E, D, E1, D1, M, v = 1;
 function f() {}
 class C {
 }
-(E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 = {})[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C";
-const a = (M = {}).x;
+(E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 || (D1 = {}))[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C", M || (M = {});
+const a = M.x;
 //// [t2.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/exportsAndImports3.2.minified.js b/crates/swc/tests/tsc-references/exportsAndImports3.2.minified.js
index 5119d4dd61b5..4baf9b58acc2 100644
--- a/crates/swc/tests/tsc-references/exportsAndImports3.2.minified.js
+++ b/crates/swc/tests/tsc-references/exportsAndImports3.2.minified.js
@@ -56,8 +56,8 @@ function f() {}
 var C = function C() {
     _class_call_check._(this, C);
 };
-(E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 = {})[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C";
-var a = (M = {}).x;
+(E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C", (D = D1 || (D1 = {}))[D.A = 0] = "A", D[D.B = 1] = "B", D[D.C = 2] = "C", M || (M = {});
+var a = M.x;
 //// [t2.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/filterNamespace_import.2.minified.js b/crates/swc/tests/tsc-references/filterNamespace_import.2.minified.js
index 4a96acb4a5e8..55d5becbbe1e 100644
--- a/crates/swc/tests/tsc-references/filterNamespace_import.2.minified.js
+++ b/crates/swc/tests/tsc-references/filterNamespace_import.2.minified.js
@@ -1,7 +1,7 @@
 //// [/ns.ts]
 var ns, ns1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(ns1 = ns = {}).Class = function Class() {
+(ns1 = ns || (ns = {})).Class = function Class() {
     _class_call_check(this, Class);
 }, ns1.Value = "", (ns1.nested || (ns1.nested = {})).NestedClass = function NestedClass() {
     _class_call_check(this, NestedClass);
diff --git a/crates/swc/tests/tsc-references/for-inStatements.2.minified.js b/crates/swc/tests/tsc-references/for-inStatements.2.minified.js
index 86fddbadd143..52082d1fd236 100644
--- a/crates/swc/tests/tsc-references/for-inStatements.2.minified.js
+++ b/crates/swc/tests/tsc-references/for-inStatements.2.minified.js
@@ -33,9 +33,9 @@ for(var x in function(x, y) {
     return x + y;
 });
 for(var x in i[42]);
-for(var x in (M = {}).X = function X() {
+for(var x in (M || (M = {})).X = function X() {
     _class_call_check(this, X);
 }, M);
 for(var x in M.X);
-for(var x in (Color1 = Color = {})[Color1.Red = 0] = "Red", Color1[Color1.Blue = 1] = "Blue", Color);
+for(var x in (Color1 = Color || (Color = {}))[Color1.Red = 0] = "Red", Color1[Color1.Blue = 1] = "Blue", Color);
 for(var x in 1);
diff --git a/crates/swc/tests/tsc-references/for-of47.2.minified.js b/crates/swc/tests/tsc-references/for-of47.2.minified.js
index d127a4d53a7c..3e8b5bbe94a1 100644
--- a/crates/swc/tests/tsc-references/for-of47.2.minified.js
+++ b/crates/swc/tests/tsc-references/for-of47.2.minified.js
@@ -1,6 +1,6 @@
 //// [for-of47.ts]
-var x, y, E;
-for ({ x, y: y = 0 } of ((E = {})[E.x = 0] = "x", [
+var x, y, E, E1;
+for ({ x, y: y = 0 } of ((E1 = E || (E = {}))[E1.x = 0] = "x", [
     {
         x: "",
         y: !0
diff --git a/crates/swc/tests/tsc-references/for-of48.2.minified.js b/crates/swc/tests/tsc-references/for-of48.2.minified.js
index e4c309a062b2..29816636c65f 100644
--- a/crates/swc/tests/tsc-references/for-of48.2.minified.js
+++ b/crates/swc/tests/tsc-references/for-of48.2.minified.js
@@ -1,6 +1,6 @@
 //// [for-of48.ts]
-var x, y, E;
-for ({ x, y = 0 } of ((E = {})[E.x = 0] = "x", [
+var x, y, E, E1;
+for ({ x, y = 0 } of ((E1 = E || (E = {}))[E1.x = 0] = "x", [
     {
         x: "",
         y: !0
diff --git a/crates/swc/tests/tsc-references/forStatements.2.minified.js b/crates/swc/tests/tsc-references/forStatements.2.minified.js
index 390222fca853..d01d5eb8b480 100644
--- a/crates/swc/tests/tsc-references/forStatements.2.minified.js
+++ b/crates/swc/tests/tsc-references/forStatements.2.minified.js
@@ -3,7 +3,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 var M, M1, C = function C() {
     _class_call_check(this, C);
 };
-for((M = M1 = {}).A = function A() {
+for((M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/forStatementsMultipleInvalidDecl.2.minified.js b/crates/swc/tests/tsc-references/forStatementsMultipleInvalidDecl.2.minified.js
index fd64d2e2cd4f..5fe5cdffb636 100644
--- a/crates/swc/tests/tsc-references/forStatementsMultipleInvalidDecl.2.minified.js
+++ b/crates/swc/tests/tsc-references/forStatementsMultipleInvalidDecl.2.minified.js
@@ -14,7 +14,7 @@ var M, M1, a, b, arr, m, C = function C() {
 }(C), D = function D() {
     _class_call_check(this, D);
 };
-for((M = M1 = {}).A = function A() {
+for((M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/forgottenNew.2.minified.js b/crates/swc/tests/tsc-references/forgottenNew.2.minified.js
index 156d368f5234..5dff672efa93 100644
--- a/crates/swc/tests/tsc-references/forgottenNew.2.minified.js
+++ b/crates/swc/tests/tsc-references/forgottenNew.2.minified.js
@@ -1,6 +1,6 @@
 //// [forgottenNew.ts]
 var Tools;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(Tools = {}).NullLogger = function NullLogger() {
+(Tools || (Tools = {})).NullLogger = function NullLogger() {
     _class_call_check(this, NullLogger);
 }, Tools.NullLogger();
diff --git a/crates/swc/tests/tsc-references/functionExpressionContextualTyping1.2.minified.js b/crates/swc/tests/tsc-references/functionExpressionContextualTyping1.2.minified.js
index 4263c1b0c336..9179e7a3dd59 100644
--- a/crates/swc/tests/tsc-references/functionExpressionContextualTyping1.2.minified.js
+++ b/crates/swc/tests/tsc-references/functionExpressionContextualTyping1.2.minified.js
@@ -1,4 +1,4 @@
 //// [functionExpressionContextualTyping1.ts]
-var E;
+var E, E1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(E = {})[E.red = 0] = "red", E[E.blue = 1] = "blue";
+(E1 = E || (E = {}))[E1.red = 0] = "red", E1[E1.blue = 1] = "blue";
diff --git a/crates/swc/tests/tsc-references/generatedContextualTyping.2.minified.js b/crates/swc/tests/tsc-references/generatedContextualTyping.2.minified.js
index 99bd3161ebe2..5066b1906118 100644
--- a/crates/swc/tests/tsc-references/generatedContextualTyping.2.minified.js
+++ b/crates/swc/tests/tsc-references/generatedContextualTyping.2.minified.js
@@ -2,7 +2,7 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var Base = function Base() {
+var x181, x182, x183, x184, x185, x186, x187, x188, x189, x190, x191, x192, x193, x194, x195, x196, x197, x198, x199, x200, x201, x202, x203, x204, Base = function Base() {
     _class_call_check(this, Base);
 }, Derived1 = function(Base) {
     _inherits(Derived1, Base);
@@ -19,4 +19,59 @@ var Base = function Base() {
     }
     return Derived2;
 }(Base);
-new Base(), new Derived1(), new Derived2();
+new Base();
+var d1 = new Derived1(), d2 = new Derived2();
+x181 || (x181 = {}), x182 || (x182 = {}), x183 || (x183 = {}), x184 || (x184 = {}), x185 || (x185 = {}), x186 || (x186 = {}), x187 || (x187 = {}), x188 || (x188 = {}), x189 || (x189 = {}), x190 || (x190 = {}), x191 || (x191 = {}), x192 || (x192 = {}), (x193 || (x193 = {})).t = function() {
+    return [
+        d1,
+        d2
+    ];
+}, (x194 || (x194 = {})).t = function() {
+    return [
+        d1,
+        d2
+    ];
+}, (x195 || (x195 = {})).t = function() {
+    return [
+        d1,
+        d2
+    ];
+}, (x196 || (x196 = {})).t = function() {
+    return [
+        d1,
+        d2
+    ];
+}, (x197 || (x197 = {})).t = function() {
+    return [
+        d1,
+        d2
+    ];
+}, (x198 || (x198 = {})).t = function() {
+    return [
+        d1,
+        d2
+    ];
+}, (x199 || (x199 = {})).t = [
+    d1,
+    d2
+], (x200 || (x200 = {})).t = [
+    d1,
+    d2
+], (x201 || (x201 = {})).t = [
+    d1,
+    d2
+], (x202 || (x202 = {})).t = {
+    n: [
+        d1,
+        d2
+    ]
+}, (x203 || (x203 = {})).t = function(n) {
+    return null;
+}, (x204 || (x204 = {})).t = {
+    func: function(n) {
+        return [
+            d1,
+            d2
+        ];
+    }
+};
diff --git a/crates/swc/tests/tsc-references/generatorInAmbientContext6.2.minified.js b/crates/swc/tests/tsc-references/generatorInAmbientContext6.2.minified.js
index 34e19c7142fd..3e0bfba3ab06 100644
--- a/crates/swc/tests/tsc-references/generatorInAmbientContext6.2.minified.js
+++ b/crates/swc/tests/tsc-references/generatorInAmbientContext6.2.minified.js
@@ -1 +1,3 @@
 //// [generatorInAmbientContext6.ts]
+var M;
+(M || (M = {})).generator = function*() {};
diff --git a/crates/swc/tests/tsc-references/generatorOverloads5.2.minified.js b/crates/swc/tests/tsc-references/generatorOverloads5.2.minified.js
index febc2d208d1e..6494a1a5e0ff 100644
--- a/crates/swc/tests/tsc-references/generatorOverloads5.2.minified.js
+++ b/crates/swc/tests/tsc-references/generatorOverloads5.2.minified.js
@@ -1 +1,3 @@
 //// [generatorOverloads5.ts]
+var M;
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/generatorYieldContextualType.2.minified.js b/crates/swc/tests/tsc-references/generatorYieldContextualType.2.minified.js
index 823555ac9c6e..c0b276873a85 100644
--- a/crates/swc/tests/tsc-references/generatorYieldContextualType.2.minified.js
+++ b/crates/swc/tests/tsc-references/generatorYieldContextualType.2.minified.js
@@ -1,9 +1,9 @@
 //// [generatorYieldContextualType.ts]
-var Directive, Directive1, Directive2;
+var Directive, StepResult, Directive1, Directive2;
 f1(function*() {
     return yield 0, 0;
 }), f2(async function*() {
     return yield 0, 0;
 }), (Directive1 = Directive || (Directive = {}))[Directive1.Back = 0] = "Back", Directive1[Directive1.Cancel = 1] = "Cancel", Directive1[Directive1.LoadMore = 2] = "LoadMore", Directive1[Directive1.Noop = 3] = "Noop", (Directive2 = Directive || (Directive = {})).is = function(value) {
     return "number" == typeof value && null != Directive2[value];
-}, Symbol("BreakStep");
+}, (StepResult || (StepResult = {})).Break = Symbol("BreakStep");
diff --git a/crates/swc/tests/tsc-references/genericCallToOverloadedMethodWithOverloadedArguments.2.minified.js b/crates/swc/tests/tsc-references/genericCallToOverloadedMethodWithOverloadedArguments.2.minified.js
index 03ad914db7b7..2ed73c6fc652 100644
--- a/crates/swc/tests/tsc-references/genericCallToOverloadedMethodWithOverloadedArguments.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallToOverloadedMethodWithOverloadedArguments.2.minified.js
@@ -1,2 +1,3 @@
 //// [genericCallToOverloadedMethodWithOverloadedArguments.ts]
-(void 0).then(testFunction), (void 0).then(testFunction), (void 0).then(testFunction), (void 0).then(testFunction), (void 0).then(testFunction), (void 0).then(testFunction);
+var m1, m2, m3, m4, m5, m6;
+m1 || (m1 = {}), (void 0).then(testFunction), m2 || (m2 = {}), (void 0).then(testFunction), m3 || (m3 = {}), (void 0).then(testFunction), m4 || (m4 = {}), (void 0).then(testFunction), m5 || (m5 = {}), (void 0).then(testFunction), m6 || (m6 = {}), (void 0).then(testFunction);
diff --git a/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments2.2.minified.js b/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments2.2.minified.js
index 9127b22910bb..de11c4acaf93 100644
--- a/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments2.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments2.2.minified.js
@@ -1,3 +1,3 @@
 //// [genericCallWithGenericSignatureArguments2.ts]
-var E, F, E1, F1;
-(E = {})[E.A = 0] = "A", (F = {})[F.A = 0] = "A", (E1 = {})[E1.A = 0] = "A", (F1 = {})[F1.A = 0] = "A";
+var onlyT, TU, E, F, E1, F1, E2, F2, E3, F3;
+onlyT || (onlyT = {}), (E1 = E || (E = {}))[E1.A = 0] = "A", (F1 = F || (F = {}))[F1.A = 0] = "A", TU || (TU = {}), (E3 = E2 || (E2 = {}))[E3.A = 0] = "A", (F3 = F2 || (F2 = {}))[F3.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments3.2.minified.js b/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments3.2.minified.js
index 58b13e363a86..36dc546b07a3 100644
--- a/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments3.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallWithGenericSignatureArguments3.2.minified.js
@@ -1,3 +1,3 @@
 //// [genericCallWithGenericSignatureArguments3.ts]
-var E, F;
-(E = {})[E.A = 0] = "A", (F = {})[F.A = 0] = "A";
+var E, F, E1, F1;
+(E1 = E || (E = {}))[E1.A = 0] = "A", (F1 = F || (F = {}))[F1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments.2.minified.js b/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments.2.minified.js
index a5b0bd01a66a..c98ccd30510b 100644
--- a/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments.2.minified.js
@@ -1,3 +1,3 @@
 //// [genericCallWithOverloadedConstructorTypedArguments.ts]
-var b;
-new (void 0)(null), new b(null);
+var NonGenericParameter, GenericParameter, b;
+NonGenericParameter || (NonGenericParameter = {}), new (void 0)(null), new b(null), GenericParameter || (GenericParameter = {});
diff --git a/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments2.2.minified.js b/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments2.2.minified.js
index d60a600694fc..7115202fb8ee 100644
--- a/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments2.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallWithOverloadedConstructorTypedArguments2.2.minified.js
@@ -1 +1,3 @@
 //// [genericCallWithOverloadedConstructorTypedArguments2.ts]
+var NonGenericParameter, GenericParameter;
+NonGenericParameter || (NonGenericParameter = {}), GenericParameter || (GenericParameter = {});
diff --git a/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments.2.minified.js b/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments.2.minified.js
index aaafc7472b5e..ce06b1dfcf56 100644
--- a/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments.2.minified.js
@@ -1 +1,3 @@
 //// [genericCallWithOverloadedFunctionTypedArguments.ts]
+var NonGenericParameter, GenericParameter;
+NonGenericParameter || (NonGenericParameter = {}), GenericParameter || (GenericParameter = {});
diff --git a/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments2.2.minified.js b/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments2.2.minified.js
index 922b9727317a..fc130cee876d 100644
--- a/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments2.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericCallWithOverloadedFunctionTypedArguments2.2.minified.js
@@ -1 +1,3 @@
 //// [genericCallWithOverloadedFunctionTypedArguments2.ts]
+var NonGenericParameter, GenericParameter;
+NonGenericParameter || (NonGenericParameter = {}), GenericParameter || (GenericParameter = {});
diff --git a/crates/swc/tests/tsc-references/genericClassWithFunctionTypedMemberArguments.2.minified.js b/crates/swc/tests/tsc-references/genericClassWithFunctionTypedMemberArguments.2.minified.js
index 4ce3f018726e..2e6b78a5868a 100644
--- a/crates/swc/tests/tsc-references/genericClassWithFunctionTypedMemberArguments.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericClassWithFunctionTypedMemberArguments.2.minified.js
@@ -1,7 +1,7 @@
 //// [genericClassWithFunctionTypedMemberArguments.ts]
-var c, c2, c1, c21;
+var ImmediatelyFix, WithCandidates, c, c2, c1, c21;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(c = new (function() {
+ImmediatelyFix || (ImmediatelyFix = {}), (c = new (function() {
     function C() {
         _class_call_check(this, C);
     }
@@ -25,7 +25,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
     return 1;
 }), c2.foo(function(x) {
     return 1;
-}), c1.foo2(1, function(a) {
+}), WithCandidates || (WithCandidates = {}), c1.foo2(1, function(a) {
     return '';
 }), c1.foo2(1, function(a) {
     return '';
diff --git a/crates/swc/tests/tsc-references/genericClassWithObjectTypeArgsAndConstraints.2.minified.js b/crates/swc/tests/tsc-references/genericClassWithObjectTypeArgsAndConstraints.2.minified.js
index ba1345049327..711e7c4cdc37 100644
--- a/crates/swc/tests/tsc-references/genericClassWithObjectTypeArgsAndConstraints.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericClassWithObjectTypeArgsAndConstraints.2.minified.js
@@ -1,6 +1,6 @@
 //// [genericClassWithObjectTypeArgsAndConstraints.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var g, g2, c1, d1, g1, g21, c11, d11, X = function X() {
+var g, g2, c1, d1, g1, g21, c11, d11, Class, Interface, X = function X() {
     _class_call_check(this, X);
 };
-c1 = new X(), d1 = new X(), g.foo(c1, d1), g.foo(c1, c1), g2.foo2(c1, d1), g2.foo2(c1, c1), c11 = new X(), d11 = new X(), g1.foo(c11, d11), g1.foo(c11, c11), g21.foo2(c11, d11), g21.foo2(c11, c11);
+Class || (Class = {}), c1 = new X(), d1 = new X(), g.foo(c1, d1), g.foo(c1, c1), g2.foo2(c1, d1), g2.foo2(c1, c1), Interface || (Interface = {}), c11 = new X(), d11 = new X(), g1.foo(c11, d11), g1.foo(c11, c11), g21.foo2(c11, d11), g21.foo2(c11, c11);
diff --git a/crates/swc/tests/tsc-references/genericSetterInClassType.2.minified.js b/crates/swc/tests/tsc-references/genericSetterInClassType.2.minified.js
index 84f704623c4d..5d864ecac501 100644
--- a/crates/swc/tests/tsc-references/genericSetterInClassType.2.minified.js
+++ b/crates/swc/tests/tsc-references/genericSetterInClassType.2.minified.js
@@ -1,6 +1,6 @@
 //// [genericSetterInClassType.ts]
-var c;
-(c = new class {
+var Generic, c;
+Generic || (Generic = {}), (c = new class {
     get y() {
         return 1;
     }
diff --git a/crates/swc/tests/tsc-references/globalThisAmbientModules.2.minified.js b/crates/swc/tests/tsc-references/globalThisAmbientModules.2.minified.js
index 9a540db40174..7895bcc8abe5 100644
--- a/crates/swc/tests/tsc-references/globalThisAmbientModules.2.minified.js
+++ b/crates/swc/tests/tsc-references/globalThisAmbientModules.2.minified.js
@@ -1 +1,3 @@
 //// [globalThisAmbientModules.ts]
+var valueModule;
+(valueModule || (valueModule = {})).val = 1;
diff --git a/crates/swc/tests/tsc-references/heterogeneousArrayLiterals.2.minified.js b/crates/swc/tests/tsc-references/heterogeneousArrayLiterals.2.minified.js
index 2989cd7acdfd..c5916a86b918 100644
--- a/crates/swc/tests/tsc-references/heterogeneousArrayLiterals.2.minified.js
+++ b/crates/swc/tests/tsc-references/heterogeneousArrayLiterals.2.minified.js
@@ -2,7 +2,7 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var Derived = function(Base) {
+var WithContextualType, Derived = function(Base) {
     _inherits(Derived, Base);
     var _super = _create_super(Derived);
     function Derived() {
@@ -12,4 +12,4 @@ var Derived = function(Base) {
 }(function Base() {
     _class_call_check(this, Base);
 });
-Derived || (Derived = {});
+Derived || (Derived = {}), WithContextualType || (WithContextualType = {});
diff --git a/crates/swc/tests/tsc-references/ifDoWhileStatements.2.minified.js b/crates/swc/tests/tsc-references/ifDoWhileStatements.2.minified.js
index 5424566017c2..d504ad3ffa49 100644
--- a/crates/swc/tests/tsc-references/ifDoWhileStatements.2.minified.js
+++ b/crates/swc/tests/tsc-references/ifDoWhileStatements.2.minified.js
@@ -2,16 +2,16 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var M, N, C = function C() {
+var M, N, M1, N1, C = function C() {
     _class_call_check(this, C);
 }, D = function D() {
     _class_call_check(this, D);
 };
-for((M = {}).A = function A() {
+for((M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
-}, (N = {}).A = function A() {
+}, (N = N1 || (N1 = {})).A = function A() {
     _class_call_check(this, A);
 }, N.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/implementingAnInterfaceExtendingClassWithPrivates2.2.minified.js b/crates/swc/tests/tsc-references/implementingAnInterfaceExtendingClassWithPrivates2.2.minified.js
index 6b67955e86b4..3e0bd8a07bd1 100644
--- a/crates/swc/tests/tsc-references/implementingAnInterfaceExtendingClassWithPrivates2.2.minified.js
+++ b/crates/swc/tests/tsc-references/implementingAnInterfaceExtendingClassWithPrivates2.2.minified.js
@@ -1,6 +1,6 @@
 //// [implementingAnInterfaceExtendingClassWithPrivates2.ts]
-var b;
+var M, M2, b;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-b.z, b.x, b.y;
+M || (M = {}), M2 || (M2 = {}), b.z, b.x, b.y;
diff --git a/crates/swc/tests/tsc-references/importAliasIdentifiers.2.minified.js b/crates/swc/tests/tsc-references/importAliasIdentifiers.2.minified.js
index e283bddb0ba7..dc3d3c3a3690 100644
--- a/crates/swc/tests/tsc-references/importAliasIdentifiers.2.minified.js
+++ b/crates/swc/tests/tsc-references/importAliasIdentifiers.2.minified.js
@@ -1,6 +1,9 @@
 //// [importAliasIdentifiers.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-var clodule = function clodule() {
+(moduleA || (moduleA = {})).Point = function Point(x, y) {
+    _class_call_check(this, Point), this.x = x, this.y = y;
+};
+var moduleA, clodule = function clodule() {
     _class_call_check(this, clodule);
 };
 function fundule() {
diff --git a/crates/swc/tests/tsc-references/importNonExternalModule.2.minified.js b/crates/swc/tests/tsc-references/importNonExternalModule.2.minified.js
index 1666496012b3..b9f0b096328b 100644
--- a/crates/swc/tests/tsc-references/importNonExternalModule.2.minified.js
+++ b/crates/swc/tests/tsc-references/importNonExternalModule.2.minified.js
@@ -1,7 +1,10 @@
 //// [foo_0.ts]
 define([
     "require"
-], function(require) {});
+], function(require) {
+    var foo;
+    (foo || (foo = {})).answer = 42;
+});
 //// [foo_1.ts]
 define([
     "require",
diff --git a/crates/swc/tests/tsc-references/importStatements.2.minified.js b/crates/swc/tests/tsc-references/importStatements.2.minified.js
index 1d4ca8db80af..72fa124ea34b 100644
--- a/crates/swc/tests/tsc-references/importStatements.2.minified.js
+++ b/crates/swc/tests/tsc-references/importStatements.2.minified.js
@@ -1,6 +1,8 @@
 //// [importStatements.ts]
-var A, A1, Point;
+var A, C, D, E, A1, Point, E1, a;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-A1 = A = {}, Point = function Point(x, y) {
+A1 = A || (A = {}), Point = function Point(x, y) {
     _class_call_check(this, Point), this.x = x, this.y = y;
-}, A1.Point = Point, A1.Origin = new Point(0, 0), new A.Point(1, 1);
+}, A1.Point = Point, A1.Origin = new Point(0, 0), C || (C = {}), D || (D = {}), new A.Point(1, 1), E1 = E || (E = {}), a = A, E1.xDist = function(x) {
+    return a.Origin.x - x.x;
+};
diff --git a/crates/swc/tests/tsc-references/importStatementsInterfaces.2.minified.js b/crates/swc/tests/tsc-references/importStatementsInterfaces.2.minified.js
index 769abace3d4a..e5f6534008e4 100644
--- a/crates/swc/tests/tsc-references/importStatementsInterfaces.2.minified.js
+++ b/crates/swc/tests/tsc-references/importStatementsInterfaces.2.minified.js
@@ -1,2 +1,5 @@
 //// [importStatementsInterfaces.ts]
-A;
+var C, D, E;
+C || (C = {}), A, D || (D = {}), (E || (E = {})).xDist = function(x) {
+    return 0 - x.x;
+};
diff --git a/crates/swc/tests/tsc-references/incrementOperatorWithAnyOtherType.2.minified.js b/crates/swc/tests/tsc-references/incrementOperatorWithAnyOtherType.2.minified.js
index 906da95948e5..d2c807a85bff 100644
--- a/crates/swc/tests/tsc-references/incrementOperatorWithAnyOtherType.2.minified.js
+++ b/crates/swc/tests/tsc-references/incrementOperatorWithAnyOtherType.2.minified.js
@@ -7,7 +7,7 @@ var ANY, ANY1, M, ANY2 = [
     x: 1,
     y: null
 };
-M = {};
+M || (M = {});
 var objA = new function A() {
     _class_call_check(this, A);
 }();
diff --git a/crates/swc/tests/tsc-references/incrementOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/incrementOperatorWithEnumType.2.minified.js
index 1cb596cb79e9..273c41d74842 100644
--- a/crates/swc/tests/tsc-references/incrementOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/incrementOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [incrementOperatorWithEnumType.ts]
 var ENUM1, ENUM11;
-(ENUM11 = ENUM1 = {})[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", ++ENUM1.B, ENUM1.B++, ++ENUM1.B, ENUM1.B++;
+(ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", ++ENUM1.B, ENUM1.B++, ++ENUM1.B, ENUM1.B++;
diff --git a/crates/swc/tests/tsc-references/incrementOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/incrementOperatorWithNumberType.2.minified.js
index 27aa6a611be7..399c6e46c1c2 100644
--- a/crates/swc/tests/tsc-references/incrementOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/incrementOperatorWithNumberType.2.minified.js
@@ -4,7 +4,7 @@ var NUMBER, M, NUMBER1 = [
     1,
     2
 ];
-M = {};
+M || (M = {});
 var objA = new function A() {
     _class_call_check(this, A);
 }();
diff --git a/crates/swc/tests/tsc-references/instancePropertiesInheritedIntoClassType.2.minified.js b/crates/swc/tests/tsc-references/instancePropertiesInheritedIntoClassType.2.minified.js
index e66bcdb88c27..cf2cd885c7f7 100644
--- a/crates/swc/tests/tsc-references/instancePropertiesInheritedIntoClassType.2.minified.js
+++ b/crates/swc/tests/tsc-references/instancePropertiesInheritedIntoClassType.2.minified.js
@@ -1,10 +1,10 @@
 //// [instancePropertiesInheritedIntoClassType.ts]
-var d, r, d1, r1;
+var NonGeneric, Generic, d, r, d1, r1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _create_class } from "@swc/helpers/_/_create_class";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-(r = (d = new (function(C) {
+NonGeneric || (NonGeneric = {}), (r = (d = new (function(C) {
     _inherits(D, C);
     var _super = _create_super(D);
     function D() {
@@ -26,7 +26,7 @@ import { _ as _create_super } from "@swc/helpers/_/_create_super";
             set: function(v) {}
         }
     ]), C;
-}()))(1, 2)).fn()).x, r.y, r.y = 4, d.y(), (r1 = (d1 = new (function(C) {
+}()))(1, 2)).fn()).x, r.y, r.y = 4, d.y(), Generic || (Generic = {}), (r1 = (d1 = new (function(C) {
     _inherits(D, C);
     var _super = _create_super(D);
     function D() {
diff --git a/crates/swc/tests/tsc-references/instancePropertyInClassType.2.minified.js b/crates/swc/tests/tsc-references/instancePropertyInClassType.2.minified.js
index d78f97ebb69f..874d4df0d9a8 100644
--- a/crates/swc/tests/tsc-references/instancePropertyInClassType.2.minified.js
+++ b/crates/swc/tests/tsc-references/instancePropertyInClassType.2.minified.js
@@ -1,8 +1,8 @@
 //// [instancePropertyInClassType.ts]
-var c, r, c1, r1;
+var NonGeneric, Generic, c, r, c1, r1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _create_class } from "@swc/helpers/_/_create_class";
-(r = (c = new (function() {
+NonGeneric || (NonGeneric = {}), (r = (c = new (function() {
     function C(a, b) {
         _class_call_check(this, C), this.a = a, this.b = b;
     }
@@ -17,7 +17,7 @@ import { _ as _create_class } from "@swc/helpers/_/_create_class";
             set: function(v) {}
         }
     ]), C;
-}())(1, 2)).fn()).x, r.y, r.y = 4, c.y(), (r1 = (c1 = new (function() {
+}())(1, 2)).fn()).x, r.y, r.y = 4, c.y(), Generic || (Generic = {}), (r1 = (c1 = new (function() {
     function C(a, b) {
         _class_call_check(this, C), this.a = a, this.b = b;
     }
diff --git a/crates/swc/tests/tsc-references/instantiatedModule.2.minified.js b/crates/swc/tests/tsc-references/instantiatedModule.2.minified.js
index 7cad8103b3c1..e07a75222b94 100644
--- a/crates/swc/tests/tsc-references/instantiatedModule.2.minified.js
+++ b/crates/swc/tests/tsc-references/instantiatedModule.2.minified.js
@@ -1,7 +1,8 @@
 //// [instantiatedModule.ts]
-var M2, Point, M3, Color, M, M21, M31;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(M = {}).Point = 1, M.Point, M.Point, M2 = M21 = {}, Point = function() {
+(M || (M = {})).Point = 1;
+var M2, Point, M3, Color, M, M21, m2, a2, M31, m3, a3, m = M;
+M.Point, m.Point, M2 = M21 || (M21 = {}), Point = function() {
     function Point() {
         _class_call_check(this, Point);
     }
@@ -11,4 +12,8 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
             y: 0
         };
     }, Point;
-}(), M2.Point = Point, (M21.Point, M21.Point).Origin(), new M21.Point(), new M21.Point(), (Color = (M3 = M31 = {}).Color || (M3.Color = {}))[Color.Blue = 0] = "Blue", Color[Color.Red = 1] = "Red", (M31.Color, M31.Color).Blue, M31.Color.Red, M31.Color.Blue;
+}(), M2.Point = Point;
+var m2 = M21, a2 = (m2.Point, M21.Point);
+a2.Origin(), new m2.Point(), new M21.Point(), (Color = (M3 = M31 || (M31 = {})).Color || (M3.Color = {}))[Color.Blue = 0] = "Blue", Color[Color.Red = 1] = "Red";
+var m3 = M31, a3 = (m3.Color, M31.Color);
+a3.Blue, M31.Color.Red, m3.Color.Blue;
diff --git a/crates/swc/tests/tsc-references/interfaceWithPropertyOfEveryType.2.minified.js b/crates/swc/tests/tsc-references/interfaceWithPropertyOfEveryType.2.minified.js
index 1d1e138a7904..b59e7fdff519 100644
--- a/crates/swc/tests/tsc-references/interfaceWithPropertyOfEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/interfaceWithPropertyOfEveryType.2.minified.js
@@ -1,6 +1,6 @@
 //// [interfaceWithPropertyOfEveryType.ts]
-var E;
+var M, E, E1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A", new function C() {
+(M || (M = {})).y = 1, (E1 = E || (E = {}))[E1.A = 0] = "A", new function C() {
     _class_call_check(this, C);
 }();
diff --git a/crates/swc/tests/tsc-references/invalidAssignmentsToVoid.2.minified.js b/crates/swc/tests/tsc-references/invalidAssignmentsToVoid.2.minified.js
index 05c40d0a81e1..7335125b9563 100644
--- a/crates/swc/tests/tsc-references/invalidAssignmentsToVoid.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidAssignmentsToVoid.2.minified.js
@@ -1,2 +1,4 @@
 //// [invalidAssignmentsToVoid.ts]
+var M;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
+(M || (M = {})).x = 1;
diff --git a/crates/swc/tests/tsc-references/invalidBooleanAssignments.2.minified.js b/crates/swc/tests/tsc-references/invalidBooleanAssignments.2.minified.js
index 6dbec08ce087..8068d7d74b21 100644
--- a/crates/swc/tests/tsc-references/invalidBooleanAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidBooleanAssignments.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidBooleanAssignments.ts]
-var E;
+var E, M, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A", (M || (M = {})).a = 1;
diff --git a/crates/swc/tests/tsc-references/invalidEnumAssignments.2.minified.js b/crates/swc/tests/tsc-references/invalidEnumAssignments.2.minified.js
index 4c29489310fa..b609812f2af5 100644
--- a/crates/swc/tests/tsc-references/invalidEnumAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidEnumAssignments.2.minified.js
@@ -1,3 +1,3 @@
 //// [invalidEnumAssignments.ts]
-var E, E2;
-(E = {})[E.A = 0] = "A", E[E.B = 1] = "B", (E2 = {})[E2.A = 0] = "A", E2[E2.B = 1] = "B";
+var E, E2, E1, E21;
+(E1 = E || (E = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", (E21 = E2 || (E2 = {}))[E21.A = 0] = "A", E21[E21.B = 1] = "B";
diff --git a/crates/swc/tests/tsc-references/invalidImportAliasIdentifiers.2.minified.js b/crates/swc/tests/tsc-references/invalidImportAliasIdentifiers.2.minified.js
index 2ec657aec5b1..ef780c44540e 100644
--- a/crates/swc/tests/tsc-references/invalidImportAliasIdentifiers.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidImportAliasIdentifiers.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidImportAliasIdentifiers.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.Red = 0] = "Red", E[E.Blue = 1] = "Blue";
+(E1 = E || (E = {}))[E1.Red = 0] = "Red", E1[E1.Blue = 1] = "Blue";
diff --git a/crates/swc/tests/tsc-references/invalidMultipleVariableDeclarations.2.minified.js b/crates/swc/tests/tsc-references/invalidMultipleVariableDeclarations.2.minified.js
index ad2239b4df2b..0f43453ee8ca 100644
--- a/crates/swc/tests/tsc-references/invalidMultipleVariableDeclarations.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidMultipleVariableDeclarations.2.minified.js
@@ -14,7 +14,7 @@ var M, M1, C = function C() {
 }(C), D = function D() {
     _class_call_check(this, D);
 };
-(M = M1 = {}).A = function A() {
+(M = M1 || (M1 = {})).A = function A() {
     _class_call_check(this, A);
 }, M.F2 = function(x) {
     return x.toString();
diff --git a/crates/swc/tests/tsc-references/invalidNumberAssignments.2.minified.js b/crates/swc/tests/tsc-references/invalidNumberAssignments.2.minified.js
index 347fb8b1c72d..7f7e5f5b7e6d 100644
--- a/crates/swc/tests/tsc-references/invalidNumberAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidNumberAssignments.2.minified.js
@@ -1,2 +1,4 @@
 //// [invalidNumberAssignments.ts]
+var M;
 import "@swc/helpers/_/_class_call_check";
+(M || (M = {})).x = 1;
diff --git a/crates/swc/tests/tsc-references/invalidStringAssignments.2.minified.js b/crates/swc/tests/tsc-references/invalidStringAssignments.2.minified.js
index d966e0e9cac1..6600aaf3c18d 100644
--- a/crates/swc/tests/tsc-references/invalidStringAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidStringAssignments.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidStringAssignments.ts]
-var M, E;
+var M, E, E1;
 import "@swc/helpers/_/_class_call_check";
-(M || (M = {})).x = 1, M = '', (E = {})[E.A = 0] = "A";
+(M || (M = {})).x = 1, M = '', (E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/invalidUndefinedAssignments.2.minified.js b/crates/swc/tests/tsc-references/invalidUndefinedAssignments.2.minified.js
index 45466d25f2e4..4d9a881b167c 100644
--- a/crates/swc/tests/tsc-references/invalidUndefinedAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidUndefinedAssignments.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidUndefinedAssignments.ts]
-var x, E, E1;
+var x, E, M, E1;
 import "@swc/helpers/_/_class_call_check";
-(E1 = E || (E = {}))[E1.A = 0] = "A", (E = x).A = x, I = x;
+(E1 = E || (E = {}))[E1.A = 0] = "A", (E = x).A = x, I = x, (M || (M = {})).x = 1;
diff --git a/crates/swc/tests/tsc-references/invalidUndefinedValues.2.minified.js b/crates/swc/tests/tsc-references/invalidUndefinedValues.2.minified.js
index bceec2ae5340..41e2b4008711 100644
--- a/crates/swc/tests/tsc-references/invalidUndefinedValues.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidUndefinedValues.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidUndefinedValues.ts]
-var E;
+var M, E, E1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(M || (M = {})).x = 1, (E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/invalidVoidAssignments.2.minified.js b/crates/swc/tests/tsc-references/invalidVoidAssignments.2.minified.js
index 8bd51a444228..5056f2a5f73e 100644
--- a/crates/swc/tests/tsc-references/invalidVoidAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidVoidAssignments.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidVoidAssignments.ts]
-var x, M, E;
+var x, M, E, E1;
 import "@swc/helpers/_/_class_call_check";
-(M || (M = {})).x = 1, M = x, (E = {})[E.A = 0] = "A";
+(M || (M = {})).x = 1, M = x, (E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/invalidVoidValues.2.minified.js b/crates/swc/tests/tsc-references/invalidVoidValues.2.minified.js
index 40c1a9f83fbc..4db853f97eb4 100644
--- a/crates/swc/tests/tsc-references/invalidVoidValues.2.minified.js
+++ b/crates/swc/tests/tsc-references/invalidVoidValues.2.minified.js
@@ -1,4 +1,4 @@
 //// [invalidVoidValues.ts]
-var E;
+var E, M, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A", (M || (M = {})).x = 1;
diff --git a/crates/swc/tests/tsc-references/keyofAndIndexedAccess.2.minified.js b/crates/swc/tests/tsc-references/keyofAndIndexedAccess.2.minified.js
index 3c746d69b0c3..0dad7e0fa50d 100644
--- a/crates/swc/tests/tsc-references/keyofAndIndexedAccess.2.minified.js
+++ b/crates/swc/tests/tsc-references/keyofAndIndexedAccess.2.minified.js
@@ -1,5 +1,5 @@
 //// [keyofAndIndexedAccess.ts]
-var Flag;
+var Flag, Flag1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
@@ -27,4 +27,4 @@ one(function() {}), on({
     }, AnotherSampleClass;
 }(function SampleClass(props) {
     _class_call_check(this, SampleClass), this.props = Object.freeze(props);
-}))({}), (Flag = {}).FLAG_1 = "flag_1", Flag.FLAG_2 = "flag_2";
+}))({}), (Flag1 = Flag || (Flag = {})).FLAG_1 = "flag_1", Flag1.FLAG_2 = "flag_2";
diff --git a/crates/swc/tests/tsc-references/literalTypeWidening.2.minified.js b/crates/swc/tests/tsc-references/literalTypeWidening.2.minified.js
index 0f87c939f614..cb7b3d319506 100644
--- a/crates/swc/tests/tsc-references/literalTypeWidening.2.minified.js
+++ b/crates/swc/tests/tsc-references/literalTypeWidening.2.minified.js
@@ -11,10 +11,10 @@ export function Set() {
 export function keys(obj) {
     return Object.keys(obj);
 }
-var E, langCodeSet = Set('fr', 'en', 'es', 'it', 'nl');
+var E, E1, langCodeSet = Set('fr', 'en', 'es', 'it', 'nl');
 export var langCodes = keys(langCodeSet);
 langCodes.map(function(code) {
     return {
         code: code
     };
-}), (E = {})[E.A = 0] = "A", E[E.B = 1] = "B", f(0);
+}), (E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", f(0);
diff --git a/crates/swc/tests/tsc-references/literalTypes2.2.minified.js b/crates/swc/tests/tsc-references/literalTypes2.2.minified.js
index df779cc1cd7a..14b4941fcf53 100644
--- a/crates/swc/tests/tsc-references/literalTypes2.2.minified.js
+++ b/crates/swc/tests/tsc-references/literalTypes2.2.minified.js
@@ -1,7 +1,7 @@
 //// [literalTypes2.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C";
-var result, E, a = [
+(E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C";
+var result, E, E1, a = [
     1,
     2
 ];
diff --git a/crates/swc/tests/tsc-references/logicalNotOperatorWithAnyOtherType.2.minified.js b/crates/swc/tests/tsc-references/logicalNotOperatorWithAnyOtherType.2.minified.js
index 3ba4ceb62916..2275f1495c7e 100644
--- a/crates/swc/tests/tsc-references/logicalNotOperatorWithAnyOtherType.2.minified.js
+++ b/crates/swc/tests/tsc-references/logicalNotOperatorWithAnyOtherType.2.minified.js
@@ -6,6 +6,6 @@ var M, A = function() {
     }
     return A.foo = function() {}, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/logicalNotOperatorWithBooleanType.2.minified.js b/crates/swc/tests/tsc-references/logicalNotOperatorWithBooleanType.2.minified.js
index 04f05b1cc644..c14c42c76324 100644
--- a/crates/swc/tests/tsc-references/logicalNotOperatorWithBooleanType.2.minified.js
+++ b/crates/swc/tests/tsc-references/logicalNotOperatorWithBooleanType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return !1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/logicalNotOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/logicalNotOperatorWithEnumType.2.minified.js
index 4a6164275ef9..8c2e4f670e9c 100644
--- a/crates/swc/tests/tsc-references/logicalNotOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/logicalNotOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [logicalNotOperatorWithEnumType.ts]
-var ENUM;
-(ENUM = {})[ENUM.A = 0] = "A", ENUM[ENUM.B = 1] = "B", ENUM[ENUM.C = 2] = "C";
+var ENUM, ENUM1, ENUM2;
+(ENUM2 = ENUM || (ENUM = {}))[ENUM2.A = 0] = "A", ENUM2[ENUM2.B = 1] = "B", ENUM2[ENUM2.C = 2] = "C", ENUM1 || (ENUM1 = {});
diff --git a/crates/swc/tests/tsc-references/logicalNotOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/logicalNotOperatorWithNumberType.2.minified.js
index 19ce74d4d530..e0f50c3374a8 100644
--- a/crates/swc/tests/tsc-references/logicalNotOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/logicalNotOperatorWithNumberType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return 1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n, objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/logicalNotOperatorWithStringType.2.minified.js b/crates/swc/tests/tsc-references/logicalNotOperatorWithStringType.2.minified.js
index 82e9de07ec3a..cc421e48e72f 100644
--- a/crates/swc/tests/tsc-references/logicalNotOperatorWithStringType.2.minified.js
+++ b/crates/swc/tests/tsc-references/logicalNotOperatorWithStringType.2.minified.js
@@ -8,6 +8,6 @@ var STRING, M, A = function() {
         return "";
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), STRING.charAt(0), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/mappedTypeOverlappingStringEnumKeys.2.minified.js b/crates/swc/tests/tsc-references/mappedTypeOverlappingStringEnumKeys.2.minified.js
index 942e27337079..87f4e7c57611 100644
--- a/crates/swc/tests/tsc-references/mappedTypeOverlappingStringEnumKeys.2.minified.js
+++ b/crates/swc/tests/tsc-references/mappedTypeOverlappingStringEnumKeys.2.minified.js
@@ -1,3 +1,3 @@
 //// [mappedTypeOverlappingStringEnumKeys.ts]
-var TerrestrialAnimalTypes;
-(TerrestrialAnimalTypes = {}).CAT = "cat", TerrestrialAnimalTypes.DOG = "dog";
+var TerrestrialAnimalTypes, AlienAnimalTypes, TerrestrialAnimalTypes1;
+(TerrestrialAnimalTypes1 = TerrestrialAnimalTypes || (TerrestrialAnimalTypes = {})).CAT = "cat", TerrestrialAnimalTypes1.DOG = "dog", (AlienAnimalTypes || (AlienAnimalTypes = {})).CAT = "cat";
diff --git a/crates/swc/tests/tsc-references/mergeThreeInterfaces.2.minified.js b/crates/swc/tests/tsc-references/mergeThreeInterfaces.2.minified.js
index d3f9bb0a2c8e..a9b533fceeae 100644
--- a/crates/swc/tests/tsc-references/mergeThreeInterfaces.2.minified.js
+++ b/crates/swc/tests/tsc-references/mergeThreeInterfaces.2.minified.js
@@ -1,3 +1,3 @@
 //// [mergeThreeInterfaces.ts]
-var a, b, a1, b1;
-a.foo, a.bar, a.baz, b.foo, b.bar, b.baz, a1.foo, a1.bar, a1.baz, b1.foo, b1.bar, b1.baz;
+var a, b, M, a1, b1;
+a.foo, a.bar, a.baz, b.foo, b.bar, b.baz, M || (M = {}), a1.foo, a1.bar, a1.baz, b1.foo, b1.bar, b1.baz;
diff --git a/crates/swc/tests/tsc-references/mergeTwoInterfaces.2.minified.js b/crates/swc/tests/tsc-references/mergeTwoInterfaces.2.minified.js
index 0bf188744188..469c3435c07f 100644
--- a/crates/swc/tests/tsc-references/mergeTwoInterfaces.2.minified.js
+++ b/crates/swc/tests/tsc-references/mergeTwoInterfaces.2.minified.js
@@ -1,3 +1,3 @@
 //// [mergeTwoInterfaces.ts]
-var a, b, a1, b1;
-a.foo, a.bar, b.foo, b.bar, a1.foo, a1.bar, b1.foo, b1.bar;
+var a, b, M, a1, b1;
+a.foo, a.bar, b.foo, b.bar, M || (M = {}), a1.foo, a1.bar, b1.foo, b1.bar;
diff --git a/crates/swc/tests/tsc-references/mergedInterfacesWithInheritedPrivates3.2.minified.js b/crates/swc/tests/tsc-references/mergedInterfacesWithInheritedPrivates3.2.minified.js
index c7f78eefc445..4725871957a5 100644
--- a/crates/swc/tests/tsc-references/mergedInterfacesWithInheritedPrivates3.2.minified.js
+++ b/crates/swc/tests/tsc-references/mergedInterfacesWithInheritedPrivates3.2.minified.js
@@ -1,4 +1,6 @@
 //// [mergedInterfacesWithInheritedPrivates3.ts]
+var M;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases.2.minified.js b/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases.2.minified.js
index c5e2e6a72ecc..f71a9ecef288 100644
--- a/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases.2.minified.js
+++ b/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases.2.minified.js
@@ -1,4 +1,4 @@
 //// [mergedInterfacesWithMultipleBases.ts]
-var a;
+var a, M;
 import "@swc/helpers/_/_class_call_check";
-a.a;
+a.a, M || (M = {});
diff --git a/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases2.2.minified.js b/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases2.2.minified.js
index 6f23b00c2fff..2e870bc7bc22 100644
--- a/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases2.2.minified.js
+++ b/crates/swc/tests/tsc-references/mergedInterfacesWithMultipleBases2.2.minified.js
@@ -1,4 +1,4 @@
 //// [mergedInterfacesWithMultipleBases2.ts]
-var a;
+var a, M;
 import "@swc/helpers/_/_class_call_check";
-a.a;
+a.a, M || (M = {});
diff --git a/crates/swc/tests/tsc-references/moduleWithStatementsOfEveryKind.2.minified.js b/crates/swc/tests/tsc-references/moduleWithStatementsOfEveryKind.2.minified.js
index 9bc8e8b8966b..fd261e41f491 100644
--- a/crates/swc/tests/tsc-references/moduleWithStatementsOfEveryKind.2.minified.js
+++ b/crates/swc/tests/tsc-references/moduleWithStatementsOfEveryKind.2.minified.js
@@ -1,31 +1,31 @@
 //// [moduleWithStatementsOfEveryKind.ts]
-var Color, Y, A, AA, B, BB, Color1;
+var A, Y, Module, Color, Color1, Y1, A1, AA, B, BB, Color2;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-(Color = {})[Color.Blue = 0] = "Blue", Color[Color.Red = 1] = "Red", Y = {}, A = function A() {
+A || (A = {}), Module || (Module = {}), (Color1 = Color || (Color = {}))[Color1.Blue = 0] = "Blue", Color1[Color1.Red = 1] = "Red", Y1 = Y || (Y = {}), A1 = function A() {
     _class_call_check(this, A);
-}, Y.A = A, AA = function AA() {
+}, Y1.A = A1, AA = function AA() {
     _class_call_check(this, AA);
-}, Y.AA = AA, B = function(AA) {
+}, Y1.AA = AA, B = function(AA) {
     _inherits(B, AA);
     var _super = _create_super(B);
     function B() {
         return _class_call_check(this, B), _super.apply(this, arguments);
     }
     return B;
-}(AA), Y.B = B, BB = function(A) {
+}(AA), Y1.B = B, BB = function(A) {
     _inherits(BB, A);
     var _super = _create_super(BB);
     function BB() {
         return _class_call_check(this, BB), _super.apply(this, arguments);
     }
     return BB;
-}(A), Y.BB = BB, Y.Module || (Y.Module = {}), (Color1 = Y.Color || (Y.Color = {}))[Color1.Blue = 0] = "Blue", Color1[Color1.Red = 1] = "Red", Y.x = 12, Y.F = function(s) {
+}(A1), Y1.BB = BB, Y1.Module || (Y1.Module = {}), (Color2 = Y1.Color || (Y1.Color = {}))[Color2.Blue = 0] = "Blue", Color2[Color2.Red = 1] = "Red", Y1.x = 12, Y1.F = function(s) {
     return 2;
-}, Y.array = null, Y.fn = function(s) {
+}, Y1.array = null, Y1.fn = function(s) {
     return 'hello ' + s;
-}, Y.ol = {
+}, Y1.ol = {
     s: 'hello',
     id: 2,
     isvalid: !0
diff --git a/crates/swc/tests/tsc-references/nameCollision.2.minified.js b/crates/swc/tests/tsc-references/nameCollision.2.minified.js
index 0674a7c49f4c..68db21fccdea 100644
--- a/crates/swc/tests/tsc-references/nameCollision.2.minified.js
+++ b/crates/swc/tests/tsc-references/nameCollision.2.minified.js
@@ -1,4 +1,4 @@
 //// [nameCollision.ts]
-var B, X, Y, Y1, Y2, Y3;
+var A, B, X, Y, D, X1, Y1, Y2, Y3, Y4;
 import "@swc/helpers/_/_class_call_check";
-B || (B = {}), B || (B = {}), (Y = (X = {}).Y || (X.Y = {})).Z || (Y.Z = {}), (Y3 = Y2 = (Y2 = (Y1 = {}).Y || (Y1.Y = {})).Y || (Y2.Y = {}))[Y3.Red = 0] = "Red", Y3[Y3.Blue = 1] = "Blue";
+A || (A = {}), B || (B = {}), B || (B = {}), (Y1 = (X1 = X || (X = {})).Y || (X1.Y = {})).Z || (Y1.Z = {}), (Y4 = Y3 = (Y3 = (Y2 = Y || (Y = {})).Y || (Y2.Y = {})).Y || (Y3.Y = {}))[Y4.Red = 0] = "Red", Y4[Y4.Blue = 1] = "Blue", (D || (D = {})).E = 'hello';
diff --git a/crates/swc/tests/tsc-references/nameWithRelativePaths.2.minified.js b/crates/swc/tests/tsc-references/nameWithRelativePaths.2.minified.js
index 2c440c545863..447489513620 100644
--- a/crates/swc/tests/tsc-references/nameWithRelativePaths.2.minified.js
+++ b/crates/swc/tests/tsc-references/nameWithRelativePaths.2.minified.js
@@ -29,7 +29,7 @@ Object.defineProperty(exports, "__esModule", {
     get: function() {
         return M2;
     }
-}), (M2 = {}).x = !0;
+}), (M2 || (M2 = {})).x = !0;
 //// [test/foo_3.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/negateOperatorWithBooleanType.2.minified.js b/crates/swc/tests/tsc-references/negateOperatorWithBooleanType.2.minified.js
index 524765cb7cdf..2918834b4248 100644
--- a/crates/swc/tests/tsc-references/negateOperatorWithBooleanType.2.minified.js
+++ b/crates/swc/tests/tsc-references/negateOperatorWithBooleanType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return !1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/negateOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/negateOperatorWithEnumType.2.minified.js
index 0ff92044c84f..e15662bc2868 100644
--- a/crates/swc/tests/tsc-references/negateOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/negateOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [negateOperatorWithEnumType.ts]
-var ENUM1;
-(ENUM1 = {})[ENUM1.A = 0] = "A", ENUM1[ENUM1.B = 1] = "B", ENUM1[ENUM1[""] = 2] = "";
+var ENUM, ENUM1, ENUM11;
+ENUM || (ENUM = {}), (ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "";
diff --git a/crates/swc/tests/tsc-references/negateOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/negateOperatorWithNumberType.2.minified.js
index 4bb987de73e5..09b6b591c0fd 100644
--- a/crates/swc/tests/tsc-references/negateOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/negateOperatorWithNumberType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return 1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n, objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/negateOperatorWithStringType.2.minified.js b/crates/swc/tests/tsc-references/negateOperatorWithStringType.2.minified.js
index 51de5bb40f88..a0f962f685fa 100644
--- a/crates/swc/tests/tsc-references/negateOperatorWithStringType.2.minified.js
+++ b/crates/swc/tests/tsc-references/negateOperatorWithStringType.2.minified.js
@@ -8,6 +8,6 @@ var STRING, M, A = function() {
         return "";
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), STRING.charAt(0), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/nestedModules.2.minified.js b/crates/swc/tests/tsc-references/nestedModules.2.minified.js
index 92a5ea56fc5a..cf2f5f501dfa 100644
--- a/crates/swc/tests/tsc-references/nestedModules.2.minified.js
+++ b/crates/swc/tests/tsc-references/nestedModules.2.minified.js
@@ -1,3 +1,3 @@
 //// [nestedModules.ts]
-var A, M2, M21;
-(A = {}).B || (A.B = {}), (M2 = M21 = {}).X || (M2.X = {}), M21.X.Point;
+var A, M2, A1, M21;
+(A = A1 || (A1 = {})).B || (A.B = {}), (M2 = M21 || (M21 = {})).X || (M2.X = {}), M21.X.Point;
diff --git a/crates/swc/tests/tsc-references/noUncheckedIndexedAccess.2.minified.js b/crates/swc/tests/tsc-references/noUncheckedIndexedAccess.2.minified.js
index c46ac15b068d..9a53a070afdc 100644
--- a/crates/swc/tests/tsc-references/noUncheckedIndexedAccess.2.minified.js
+++ b/crates/swc/tests/tsc-references/noUncheckedIndexedAccess.2.minified.js
@@ -1,3 +1,3 @@
 //// [noUncheckedIndexedAccess.ts]
-var NumericEnum1, NumericEnum2, StringEnum1;
-(NumericEnum1 = {})[NumericEnum1.A = 0] = "A", NumericEnum1[NumericEnum1.B = 1] = "B", NumericEnum1[NumericEnum1.C = 2] = "C", (NumericEnum2 = {})[NumericEnum2.A = 0] = "A", NumericEnum2[NumericEnum2.B = 1] = "B", NumericEnum2[NumericEnum2.C = 2] = "C", (StringEnum1 = {}).A = "Alpha", StringEnum1.B = "Beta", strMap.foo, strMap.bar, strMap[0], strMap[0], strMap[0], strMap[0], strMap.foo, strMap[0], strMap[0], strMap.Alpha, strMap.Alpha, strMap[0], strMap[0], strMap[null], strMap.foo, strMap.bar, strMap.baz = void 0, strMap.qua = void 0, strMap[0] = void 0, strMap[null] = void 0, numMap[0], numMap[0], numMap[0], numMap[0], numMap[0], obj1.x, obj1.y, obj1.y, obj1.z, strMapUnion.foo, symbolMap[s], symbolMap[s] = void 0, nonEmptyStringArray[0], nonEmptyStringArray[1];
+var NumericEnum1, NumericEnum2, StringEnum1, NumericEnum11, NumericEnum21, StringEnum11;
+(NumericEnum1 = NumericEnum11 || (NumericEnum11 = {}))[NumericEnum1.A = 0] = "A", NumericEnum1[NumericEnum1.B = 1] = "B", NumericEnum1[NumericEnum1.C = 2] = "C", (NumericEnum2 = NumericEnum21 || (NumericEnum21 = {}))[NumericEnum2.A = 0] = "A", NumericEnum2[NumericEnum2.B = 1] = "B", NumericEnum2[NumericEnum2.C = 2] = "C", (StringEnum1 = StringEnum11 || (StringEnum11 = {})).A = "Alpha", StringEnum1.B = "Beta", strMap.foo, strMap.bar, strMap[0], strMap[0], strMap[0], strMap[0], strMap.foo, strMap[0], strMap[0], strMap.Alpha, strMap.Alpha, strMap[0], strMap[0], strMap[null], strMap.foo, strMap.bar, strMap.baz = void 0, strMap.qua = void 0, strMap[0] = void 0, strMap[null] = void 0, numMap[0], numMap[0], numMap[0], numMap[0], numMap[0], obj1.x, obj1.y, obj1.y, obj1.z, strMapUnion.foo, symbolMap[s], symbolMap[s] = void 0, nonEmptyStringArray[0], nonEmptyStringArray[1];
diff --git a/crates/swc/tests/tsc-references/nonGenericTypeReferenceWithTypeArguments.2.minified.js b/crates/swc/tests/tsc-references/nonGenericTypeReferenceWithTypeArguments.2.minified.js
index d81fa66ef8fe..2c646bec85ec 100644
--- a/crates/swc/tests/tsc-references/nonGenericTypeReferenceWithTypeArguments.2.minified.js
+++ b/crates/swc/tests/tsc-references/nonGenericTypeReferenceWithTypeArguments.2.minified.js
@@ -1,2 +1,4 @@
 //// [nonGenericTypeReferenceWithTypeArguments.ts]
+var E;
 import "@swc/helpers/_/_class_call_check";
+E || (E = {});
diff --git a/crates/swc/tests/tsc-references/nonInstantiatedModule.2.minified.js b/crates/swc/tests/tsc-references/nonInstantiatedModule.2.minified.js
index 3dd56462b851..a23a3ea51c7d 100644
--- a/crates/swc/tests/tsc-references/nonInstantiatedModule.2.minified.js
+++ b/crates/swc/tests/tsc-references/nonInstantiatedModule.2.minified.js
@@ -1,9 +1,12 @@
 //// [nonInstantiatedModule.ts]
-var M2, M;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(M = {}).a = 1, M.a, M.a, ((M2 = {}).Point || (M2.Point = {})).Origin = function() {
+(M || (M = {})).a = 1;
+var M2, M, M21, M3, m = M;
+M.a, m.a, ((M2 = M21 || (M21 = {})).Point || (M2.Point = {})).Origin = function() {
     return {
         x: 0,
         y: 0
     };
+}, (M3 || (M3 = {})).Utils = function Utils() {
+    _class_call_check(this, Utils);
 };
diff --git a/crates/swc/tests/tsc-references/nullAssignableToEveryType.2.minified.js b/crates/swc/tests/tsc-references/nullAssignableToEveryType.2.minified.js
index 051d038c82bd..4e87139e96a5 100644
--- a/crates/swc/tests/tsc-references/nullAssignableToEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/nullAssignableToEveryType.2.minified.js
@@ -1,4 +1,4 @@
 //// [nullAssignableToEveryType.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/nullIsSubtypeOfEverythingButUndefined.2.minified.js b/crates/swc/tests/tsc-references/nullIsSubtypeOfEverythingButUndefined.2.minified.js
index c8cac9675e41..fd825e89f08c 100644
--- a/crates/swc/tests/tsc-references/nullIsSubtypeOfEverythingButUndefined.2.minified.js
+++ b/crates/swc/tests/tsc-references/nullIsSubtypeOfEverythingButUndefined.2.minified.js
@@ -1,8 +1,8 @@
 //// [nullIsSubtypeOfEverythingButUndefined.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E = E1 || (E1 = {}))[E.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/numberAssignableToEnum.2.minified.js b/crates/swc/tests/tsc-references/numberAssignableToEnum.2.minified.js
index 0e767b0b1411..117581f0d3f3 100644
--- a/crates/swc/tests/tsc-references/numberAssignableToEnum.2.minified.js
+++ b/crates/swc/tests/tsc-references/numberAssignableToEnum.2.minified.js
@@ -1,3 +1,3 @@
 //// [numberAssignableToEnum.ts]
-var E;
-(E = {})[E.A = 0] = "A";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/objectTypesIdentity2.2.minified.js b/crates/swc/tests/tsc-references/objectTypesIdentity2.2.minified.js
index 11d88b675110..e55971c43106 100644
--- a/crates/swc/tests/tsc-references/objectTypesIdentity2.2.minified.js
+++ b/crates/swc/tests/tsc-references/objectTypesIdentity2.2.minified.js
@@ -1,4 +1,4 @@
 //// [objectTypesIdentity2.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/parserEnum6.2.minified.js b/crates/swc/tests/tsc-references/parserEnum6.2.minified.js
index 86af0e035ecd..ff0e32b00701 100644
--- a/crates/swc/tests/tsc-references/parserEnum6.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserEnum6.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserEnum6.ts]
-var E;
-(E = {})[E.A = 0] = "A", E[E.B = 1] = "B", E[E.C = 2] = "C";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B", E1[E1.C = 2] = "C";
diff --git a/crates/swc/tests/tsc-references/parserEnumDeclaration1.2.minified.js b/crates/swc/tests/tsc-references/parserEnumDeclaration1.2.minified.js
index c7844e6deabd..221eff2f4e91 100644
--- a/crates/swc/tests/tsc-references/parserEnumDeclaration1.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserEnumDeclaration1.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserEnumDeclaration1.ts]
-var E;
-(E = {})[E.Foo = 1] = "Foo", E[E.Bar = 2] = "Bar";
+var E, E1;
+(E1 = E || (E = {}))[E1.Foo = 1] = "Foo", E1[E1.Bar = 2] = "Bar";
diff --git a/crates/swc/tests/tsc-references/parserEnumDeclaration5.2.minified.js b/crates/swc/tests/tsc-references/parserEnumDeclaration5.2.minified.js
index 86620d251444..d7a9368a160f 100644
--- a/crates/swc/tests/tsc-references/parserEnumDeclaration5.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserEnumDeclaration5.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserEnumDeclaration5.ts]
-var E;
-(E = {})[E.A = 1] = "A", E[E.B = 2] = "B", E[E.C = 2] = "C", E[E.D = 3] = "D";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 1] = "A", E1[E1.B = 2] = "B", E1[E1.C = 2] = "C", E1[E1.D = 3] = "D";
diff --git a/crates/swc/tests/tsc-references/parserEnumDeclaration6.2.minified.js b/crates/swc/tests/tsc-references/parserEnumDeclaration6.2.minified.js
index c1dd3d17b56d..63b30d07fe35 100644
--- a/crates/swc/tests/tsc-references/parserEnumDeclaration6.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserEnumDeclaration6.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserEnumDeclaration6.ts]
-var E;
-(E = {})[E.A = 1] = "A", E[E.B = 2] = "B", E[E.C = 2] = "C", E[E.D = 3] = "D";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 1] = "A", E1[E1.B = 2] = "B", E1[E1.C = 2] = "C", E1[E1.D = 3] = "D";
diff --git a/crates/swc/tests/tsc-references/parserErrorRecovery_IncompleteMemberVariable1.2.minified.js b/crates/swc/tests/tsc-references/parserErrorRecovery_IncompleteMemberVariable1.2.minified.js
index b02f13dba251..5c331066f1ae 100644
--- a/crates/swc/tests/tsc-references/parserErrorRecovery_IncompleteMemberVariable1.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserErrorRecovery_IncompleteMemberVariable1.2.minified.js
@@ -1,7 +1,7 @@
 //// [parserErrorRecovery_IncompleteMemberVariable1.ts]
 var Shapes, Point, Shapes1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-Shapes = Shapes1 = {}, (Point = function() {
+Shapes = Shapes1 || (Shapes1 = {}), (Point = function() {
     function Point(x, y) {
         _class_call_check(this, Point), this.x = x, this.y = y;
     }
diff --git a/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum.2.minified.js b/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum.2.minified.js
index 0228d6c444ad..1c2ff62d8cfd 100644
--- a/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserInterfaceKeywordInEnum.ts]
-var Bar;
-(Bar = {})[Bar.interface = 0] = "interface";
+var Bar, Bar1;
+(Bar1 = Bar || (Bar = {}))[Bar1.interface = 0] = "interface";
diff --git a/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum1.2.minified.js b/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum1.2.minified.js
index 5b8b21bd0939..b8aca4bdd3b7 100644
--- a/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum1.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserInterfaceKeywordInEnum1.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserInterfaceKeywordInEnum1.ts]
-var Bar;
-(Bar = {})[Bar.interface = 0] = "interface";
+var Bar, Bar1;
+(Bar1 = Bar || (Bar = {}))[Bar1.interface = 0] = "interface";
diff --git a/crates/swc/tests/tsc-references/parserRealSource1.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource1.2.minified.js
index 5d233accebaa..2763b11317f5 100644
--- a/crates/swc/tests/tsc-references/parserRealSource1.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource1.2.minified.js
@@ -1,5 +1,5 @@
 //// [parserRealSource1.ts]
-var TypeScript, NullLogger, LoggerAdapter, BufferedLogger;
+var TypeScript, TypeScript1, NullLogger, LoggerAdapter, BufferedLogger;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 !function(CompilerDiagnostics) {
     function Alert(output) {
@@ -10,7 +10,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
     }, CompilerDiagnostics.assert = function(condition, s) {
         CompilerDiagnostics.debug && !condition && Alert(s);
     };
-}((TypeScript = {}).CompilerDiagnostics || (TypeScript.CompilerDiagnostics = {})), NullLogger = function() {
+}((TypeScript1 = TypeScript || (TypeScript = {})).CompilerDiagnostics || (TypeScript1.CompilerDiagnostics = {})), NullLogger = function() {
     function NullLogger() {
         _class_call_check(this, NullLogger);
     }
@@ -26,7 +26,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
     }, _proto.fatal = function() {
         return !1;
     }, _proto.log = function(s) {}, NullLogger;
-}(), TypeScript.NullLogger = NullLogger, LoggerAdapter = function() {
+}(), TypeScript1.NullLogger = NullLogger, LoggerAdapter = function() {
     function LoggerAdapter(logger) {
         _class_call_check(this, LoggerAdapter), this.logger = logger, this._information = this.logger.information(), this._debug = this.logger.debug(), this._warning = this.logger.warning(), this._error = this.logger.error(), this._fatal = this.logger.fatal();
     }
@@ -44,7 +44,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
     }, _proto.log = function(s) {
         this.logger.log(s);
     }, LoggerAdapter;
-}(), TypeScript.LoggerAdapter = LoggerAdapter, BufferedLogger = function() {
+}(), TypeScript1.LoggerAdapter = LoggerAdapter, BufferedLogger = function() {
     function BufferedLogger() {
         _class_call_check(this, BufferedLogger), this.logContents = [];
     }
@@ -62,10 +62,10 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
     }, _proto.log = function(s) {
         this.logContents.push(s);
     }, BufferedLogger;
-}(), TypeScript.BufferedLogger = BufferedLogger, TypeScript.timeFunction = function(logger, funcDescription, func) {
+}(), TypeScript1.BufferedLogger = BufferedLogger, TypeScript1.timeFunction = function(logger, funcDescription, func) {
     var start = +new Date(), result = func(), end = +new Date();
     return logger.log(funcDescription + " completed in " + (end - start) + " msec"), result;
-}, TypeScript.stringToLiteral = function(value, length) {
+}, TypeScript1.stringToLiteral = function(value, length) {
     var result = "", addChar = function(index) {
         switch(value.charCodeAt(index)){
             case 0x09:
diff --git a/crates/swc/tests/tsc-references/parserRealSource12.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource12.2.minified.js
index d7b503a7aa21..c3d3cd347f40 100644
--- a/crates/swc/tests/tsc-references/parserRealSource12.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource12.2.minified.js
@@ -1,7 +1,7 @@
 //// [parserRealSource12.ts]
-var TypeScript, globalAstWalkerFactory, ChildrenWalkers, AstWalkOptions, AstWalker, AstWalkerFactory;
+var TypeScript, TypeScript1, globalAstWalkerFactory, ChildrenWalkers, AstWalkOptions, AstWalker, AstWalkerFactory;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-TypeScript = {}, AstWalkOptions = function() {
+TypeScript1 = TypeScript || (TypeScript = {}), AstWalkOptions = function() {
     function AstWalkOptions() {
         _class_call_check(this, AstWalkOptions), this.goChildren = !0, this.goNextSibling = !0, this.reverseSiblings = !1;
     }
@@ -9,7 +9,7 @@ TypeScript = {}, AstWalkOptions = function() {
         var stop = !(arguments.length > 0) || void 0 === arguments[0] || arguments[0];
         this.goChildren = !stop, this.goNextSibling = !stop;
     }, AstWalkOptions;
-}(), TypeScript.AstWalkOptions = AstWalkOptions, AstWalker = function() {
+}(), TypeScript1.AstWalkOptions = AstWalkOptions, AstWalker = function() {
     function AstWalker(childrenWalkers, pre, post, options, state) {
         _class_call_check(this, AstWalker), this.childrenWalkers = childrenWalkers, this.pre = pre, this.post = post, this.options = options, this.state = state;
     }
@@ -37,7 +37,7 @@ TypeScript = {}, AstWalkOptions = function() {
     }, _proto.initChildrenWalkers = function() {
         for(var e in this.childrenWalkers[NodeType.None] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Empty] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.EmptyExpr] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.True] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.False] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.This] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Super] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.QString] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Regex] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Null] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.ArrayLit] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.ObjectLit] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.Void] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.Comma] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Pos] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.Neg] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.Delete] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.Await] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.In] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Dot] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.From] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Is] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.InstOf] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Typeof] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.NumberLit] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Name] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.TypeRef] = ChildrenWalkers.walkTypeReferenceChildren, this.childrenWalkers[NodeType.Index] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Call] = ChildrenWalkers.walkCallExpressionChildren, this.childrenWalkers[NodeType.New] = ChildrenWalkers.walkCallExpressionChildren, this.childrenWalkers[NodeType.Asg] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgAdd] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgSub] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgDiv] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgMul] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgMod] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgAnd] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgXor] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgOr] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgLsh] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgRsh] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.AsgRs2] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.ConditionalExpression] = ChildrenWalkers.walkTrinaryExpressionChildren, this.childrenWalkers[NodeType.LogOr] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.LogAnd] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Or] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Xor] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.And] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Eq] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Ne] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Eqv] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.NEqv] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Lt] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Le] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Gt] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Ge] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Add] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Sub] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Mul] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Div] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Mod] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Lsh] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Rsh] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Rs2] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.Not] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.LogNot] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.IncPre] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.DecPre] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.IncPost] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.DecPost] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.TypeAssertion] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.FuncDecl] = ChildrenWalkers.walkFuncDeclChildren, this.childrenWalkers[NodeType.Member] = ChildrenWalkers.walkBinaryExpressionChildren, this.childrenWalkers[NodeType.VarDecl] = ChildrenWalkers.walkBoundDeclChildren, this.childrenWalkers[NodeType.ArgDecl] = ChildrenWalkers.walkBoundDeclChildren, this.childrenWalkers[NodeType.Return] = ChildrenWalkers.walkReturnStatementChildren, this.childrenWalkers[NodeType.Break] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Continue] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Throw] = ChildrenWalkers.walkUnaryExpressionChildren, this.childrenWalkers[NodeType.For] = ChildrenWalkers.walkForStatementChildren, this.childrenWalkers[NodeType.ForIn] = ChildrenWalkers.walkForInStatementChildren, this.childrenWalkers[NodeType.If] = ChildrenWalkers.walkIfStatementChildren, this.childrenWalkers[NodeType.While] = ChildrenWalkers.walkWhileStatementChildren, this.childrenWalkers[NodeType.DoWhile] = ChildrenWalkers.walkDoWhileStatementChildren, this.childrenWalkers[NodeType.Block] = ChildrenWalkers.walkBlockChildren, this.childrenWalkers[NodeType.Case] = ChildrenWalkers.walkCaseStatementChildren, this.childrenWalkers[NodeType.Switch] = ChildrenWalkers.walkSwitchStatementChildren, this.childrenWalkers[NodeType.Try] = ChildrenWalkers.walkTryChildren, this.childrenWalkers[NodeType.TryCatch] = ChildrenWalkers.walkTryCatchChildren, this.childrenWalkers[NodeType.TryFinally] = ChildrenWalkers.walkTryFinallyChildren, this.childrenWalkers[NodeType.Finally] = ChildrenWalkers.walkFinallyChildren, this.childrenWalkers[NodeType.Catch] = ChildrenWalkers.walkCatchChildren, this.childrenWalkers[NodeType.List] = ChildrenWalkers.walkListChildren, this.childrenWalkers[NodeType.Script] = ChildrenWalkers.walkScriptChildren, this.childrenWalkers[NodeType.ClassDeclaration] = ChildrenWalkers.walkClassDeclChildren, this.childrenWalkers[NodeType.InterfaceDeclaration] = ChildrenWalkers.walkTypeDeclChildren, this.childrenWalkers[NodeType.ModuleDeclaration] = ChildrenWalkers.walkModuleDeclChildren, this.childrenWalkers[NodeType.ImportDeclaration] = ChildrenWalkers.walkImportDeclChildren, this.childrenWalkers[NodeType.With] = ChildrenWalkers.walkWithStatementChildren, this.childrenWalkers[NodeType.Label] = ChildrenWalkers.walkLabelChildren, this.childrenWalkers[NodeType.LabeledStatement] = ChildrenWalkers.walkLabeledStatementChildren, this.childrenWalkers[NodeType.EBStart] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.GotoEB] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.EndCode] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Error] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Comment] = ChildrenWalkers.walkNone, this.childrenWalkers[NodeType.Debugger] = ChildrenWalkers.walkNone, NodeType._map)if (void 0 === this.childrenWalkers[e]) throw Error("initWalkers function is not up to date with enum content!");
     }, AstWalkerFactory;
-}(), TypeScript.AstWalkerFactory = AstWalkerFactory, TypeScript.getAstWalkerFactory = function() {
+}(), TypeScript1.AstWalkerFactory = AstWalkerFactory, TypeScript1.getAstWalkerFactory = function() {
     return globalAstWalkerFactory || (globalAstWalkerFactory = new AstWalkerFactory()), globalAstWalkerFactory;
 }, function(ChildrenWalkers) {
     function walkRecordChildren(preAst, parent, walker) {
@@ -106,4 +106,4 @@ TypeScript = {}, AstWalkOptions = function() {
     }, ChildrenWalkers.walkLabelChildren = function(preAst, parent, walker) {}, ChildrenWalkers.walkLabeledStatementChildren = function(preAst, parent, walker) {
         preAst.labels = walker.walk(preAst.labels, preAst), walker.options.goNextSibling && (preAst.stmt = walker.walk(preAst.stmt, preAst));
     };
-}(ChildrenWalkers = {});
+}(ChildrenWalkers || (ChildrenWalkers = {}));
diff --git a/crates/swc/tests/tsc-references/parserRealSource13.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource13.2.minified.js
index 94b0e65df69c..9a5dbbe44349 100644
--- a/crates/swc/tests/tsc-references/parserRealSource13.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource13.2.minified.js
@@ -1,16 +1,16 @@
 //// [parserRealSource13.ts]
-var TypeScript;
+var TypeScript, TypeScript1;
 !function(AstWalkerWithDetailCallback) {
     function AstWalkerCallback(pre, ast, callback) {
         var nodeType = ast.nodeType, callbackString = NodeType._map[nodeType] + "Callback";
         return callback[callbackString] ? callback[callbackString](pre, ast) : !callback.DefaultCallback || callback.DefaultCallback(pre, ast);
     }
     AstWalkerWithDetailCallback.walk = function(script, callback) {
-        var walker = TypeScript.getAstWalkerFactory().getWalker(function(cur, parent) {
+        var walker = TypeScript1.getAstWalkerFactory().getWalker(function(cur, parent) {
             return walker.options.goChildren = AstWalkerCallback(!0, cur, callback), cur;
         }, function(cur, parent) {
             return AstWalkerCallback(!1, cur, callback), cur;
         });
         walker.walk(script, null);
     };
-}((TypeScript = {}).AstWalkerWithDetailCallback || (TypeScript.AstWalkerWithDetailCallback = {}));
+}((TypeScript1 = TypeScript || (TypeScript = {})).AstWalkerWithDetailCallback || (TypeScript1.AstWalkerWithDetailCallback = {}));
diff --git a/crates/swc/tests/tsc-references/parserRealSource14.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource14.2.minified.js
index e0309e8673e4..725dabd8904a 100644
--- a/crates/swc/tests/tsc-references/parserRealSource14.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource14.2.minified.js
@@ -1,4 +1,5 @@
 //// [parserRealSource14.ts]
+var TypeScript;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 !function(TypeScript) {
     function lastOf(items) {
@@ -189,4 +190,4 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
             return walker.state.pop(), cur;
         }, null, path);
     };
-}({});
+}(TypeScript || (TypeScript = {}));
diff --git a/crates/swc/tests/tsc-references/parserRealSource2.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource2.2.minified.js
index c869d902e252..3ac315e4322d 100644
--- a/crates/swc/tests/tsc-references/parserRealSource2.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource2.2.minified.js
@@ -1,10 +1,10 @@
 //// [parserRealSource2.ts]
-var TypeScript, ErrorRecoverySet, AllowedElements, Modifiers, ASTFlags, DeclFlags, ModuleFlags, SymbolFlags, VarFlags, FncFlags, SignatureFlags, TypeFlags, TypeRelationshipFlags, CodeGenTarget, ModuleGenTarget;
-(TypeScript = {}).hasFlag = function(val, flag) {
+var TypeScript, TypeScript1, ErrorRecoverySet, AllowedElements, Modifiers, ASTFlags, DeclFlags, ModuleFlags, SymbolFlags, VarFlags, FncFlags, SignatureFlags, TypeFlags, TypeRelationshipFlags, CodeGenTarget, ModuleGenTarget;
+(TypeScript1 = TypeScript || (TypeScript = {})).hasFlag = function(val, flag) {
     return (val & flag) != 0;
-}, (ErrorRecoverySet = TypeScript.ErrorRecoverySet || (TypeScript.ErrorRecoverySet = {}))[ErrorRecoverySet.None = 0] = "None", ErrorRecoverySet[ErrorRecoverySet.Comma = 1] = "Comma", ErrorRecoverySet[ErrorRecoverySet.SColon = 2] = "SColon", ErrorRecoverySet[ErrorRecoverySet.Asg = 4] = "Asg", ErrorRecoverySet[ErrorRecoverySet.BinOp = 8] = "BinOp", ErrorRecoverySet[ErrorRecoverySet.RBrack = 16] = "RBrack", ErrorRecoverySet[ErrorRecoverySet.RCurly = 32] = "RCurly", ErrorRecoverySet[ErrorRecoverySet.RParen = 64] = "RParen", ErrorRecoverySet[ErrorRecoverySet.Dot = 128] = "Dot", ErrorRecoverySet[ErrorRecoverySet.Colon = 256] = "Colon", ErrorRecoverySet[ErrorRecoverySet.PrimType = 512] = "PrimType", ErrorRecoverySet[ErrorRecoverySet.AddOp = 1024] = "AddOp", ErrorRecoverySet[ErrorRecoverySet.LCurly = 2048] = "LCurly", ErrorRecoverySet[ErrorRecoverySet.PreOp = 4096] = "PreOp", ErrorRecoverySet[ErrorRecoverySet.RegExp = 8192] = "RegExp", ErrorRecoverySet[ErrorRecoverySet.LParen = 16384] = "LParen", ErrorRecoverySet[ErrorRecoverySet.LBrack = 32768] = "LBrack", ErrorRecoverySet[ErrorRecoverySet.Scope = 65536] = "Scope", ErrorRecoverySet[ErrorRecoverySet.In = 131072] = "In", ErrorRecoverySet[ErrorRecoverySet.SCase = 262144] = "SCase", ErrorRecoverySet[ErrorRecoverySet.Else = 524288] = "Else", ErrorRecoverySet[ErrorRecoverySet.Catch = 1048576] = "Catch", ErrorRecoverySet[ErrorRecoverySet.Var = 2097152] = "Var", ErrorRecoverySet[ErrorRecoverySet.Stmt = 4194304] = "Stmt", ErrorRecoverySet[ErrorRecoverySet.While = 8388608] = "While", ErrorRecoverySet[ErrorRecoverySet.ID = 16777216] = "ID", ErrorRecoverySet[ErrorRecoverySet.Prefix = 33554432] = "Prefix", ErrorRecoverySet[ErrorRecoverySet.Literal = 67108864] = "Literal", ErrorRecoverySet[ErrorRecoverySet.RLit = 134217728] = "RLit", ErrorRecoverySet[ErrorRecoverySet.Func = 268435456] = "Func", ErrorRecoverySet[ErrorRecoverySet.EOF = 536870912] = "EOF", ErrorRecoverySet[ErrorRecoverySet.TypeScriptS = 1073741824] = "TypeScriptS", ErrorRecoverySet[ErrorRecoverySet.ExprStart = 520158210] = "ExprStart", ErrorRecoverySet[ErrorRecoverySet.StmtStart = 1608580098] = "StmtStart", ErrorRecoverySet[ErrorRecoverySet.Postfix = 49280] = "Postfix", (AllowedElements = TypeScript.AllowedElements || (TypeScript.AllowedElements = {}))[AllowedElements.None = 0] = "None", AllowedElements[AllowedElements.ModuleDeclarations = 4] = "ModuleDeclarations", AllowedElements[AllowedElements.ClassDeclarations = 8] = "ClassDeclarations", AllowedElements[AllowedElements.InterfaceDeclarations = 16] = "InterfaceDeclarations", AllowedElements[AllowedElements.AmbientDeclarations = 1024] = "AmbientDeclarations", AllowedElements[AllowedElements.Properties = 2048] = "Properties", AllowedElements[AllowedElements.Global = 1052] = "Global", AllowedElements[AllowedElements.QuickParse = 3100] = "QuickParse", (Modifiers = TypeScript.Modifiers || (TypeScript.Modifiers = {}))[Modifiers.None = 0] = "None", Modifiers[Modifiers.Private = 1] = "Private", Modifiers[Modifiers.Public = 2] = "Public", Modifiers[Modifiers.Readonly = 4] = "Readonly", Modifiers[Modifiers.Ambient = 8] = "Ambient", Modifiers[Modifiers.Exported = 16] = "Exported", Modifiers[Modifiers.Getter = 32] = "Getter", Modifiers[Modifiers.Setter = 64] = "Setter", Modifiers[Modifiers.Static = 128] = "Static", (ASTFlags = TypeScript.ASTFlags || (TypeScript.ASTFlags = {}))[ASTFlags.None = 0] = "None", ASTFlags[ASTFlags.ExplicitSemicolon = 1] = "ExplicitSemicolon", ASTFlags[ASTFlags.AutomaticSemicolon = 2] = "AutomaticSemicolon", ASTFlags[ASTFlags.Writeable = 4] = "Writeable", ASTFlags[ASTFlags.Error = 8] = "Error", ASTFlags[ASTFlags.DotLHSPartial = 16] = "DotLHSPartial", ASTFlags[ASTFlags.DotLHS = 32] = "DotLHS", ASTFlags[ASTFlags.IsStatement = 64] = "IsStatement", ASTFlags[ASTFlags.StrictMode = 128] = "StrictMode", ASTFlags[ASTFlags.PossibleOptionalParameter = 256] = "PossibleOptionalParameter", ASTFlags[ASTFlags.ClassBaseConstructorCall = 512] = "ClassBaseConstructorCall", ASTFlags[ASTFlags.OptionalName = 1024] = "OptionalName", ASTFlags[ASTFlags.SkipNextRParen = 2048] = "SkipNextRParen", (DeclFlags = TypeScript.DeclFlags || (TypeScript.DeclFlags = {}))[DeclFlags.None = 0] = "None", DeclFlags[DeclFlags.Exported = 1] = "Exported", DeclFlags[DeclFlags.Private = 2] = "Private", DeclFlags[DeclFlags.Public = 4] = "Public", DeclFlags[DeclFlags.Ambient = 8] = "Ambient", DeclFlags[DeclFlags.Static = 16] = "Static", DeclFlags[DeclFlags.LocalStatic = 32] = "LocalStatic", DeclFlags[DeclFlags.GetAccessor = 64] = "GetAccessor", DeclFlags[DeclFlags.SetAccessor = 128] = "SetAccessor", (ModuleFlags = TypeScript.ModuleFlags || (TypeScript.ModuleFlags = {}))[ModuleFlags.None = 0] = "None", ModuleFlags[ModuleFlags.Exported = 1] = "Exported", ModuleFlags[ModuleFlags.Private = 2] = "Private", ModuleFlags[ModuleFlags.Public = 4] = "Public", ModuleFlags[ModuleFlags.Ambient = 8] = "Ambient", ModuleFlags[ModuleFlags.Static = 16] = "Static", ModuleFlags[ModuleFlags.LocalStatic = 32] = "LocalStatic", ModuleFlags[ModuleFlags.GetAccessor = 64] = "GetAccessor", ModuleFlags[ModuleFlags.SetAccessor = 128] = "SetAccessor", ModuleFlags[ModuleFlags.IsEnum = 256] = "IsEnum", ModuleFlags[ModuleFlags.ShouldEmitModuleDecl = 512] = "ShouldEmitModuleDecl", ModuleFlags[ModuleFlags.IsWholeFile = 1024] = "IsWholeFile", ModuleFlags[ModuleFlags.IsDynamic = 2048] = "IsDynamic", ModuleFlags[ModuleFlags.MustCaptureThis = 4096] = "MustCaptureThis", (SymbolFlags = TypeScript.SymbolFlags || (TypeScript.SymbolFlags = {}))[SymbolFlags.None = 0] = "None", SymbolFlags[SymbolFlags.Exported = 1] = "Exported", SymbolFlags[SymbolFlags.Private = 2] = "Private", SymbolFlags[SymbolFlags.Public = 4] = "Public", SymbolFlags[SymbolFlags.Ambient = 8] = "Ambient", SymbolFlags[SymbolFlags.Static = 16] = "Static", SymbolFlags[SymbolFlags.LocalStatic = 32] = "LocalStatic", SymbolFlags[SymbolFlags.GetAccessor = 64] = "GetAccessor", SymbolFlags[SymbolFlags.SetAccessor = 128] = "SetAccessor", SymbolFlags[SymbolFlags.Property = 256] = "Property", SymbolFlags[SymbolFlags.Readonly = 512] = "Readonly", SymbolFlags[SymbolFlags.ModuleMember = 1024] = "ModuleMember", SymbolFlags[SymbolFlags.InterfaceMember = 2048] = "InterfaceMember", SymbolFlags[SymbolFlags.ClassMember = 4096] = "ClassMember", SymbolFlags[SymbolFlags.BuiltIn = 8192] = "BuiltIn", SymbolFlags[SymbolFlags.TypeSetDuringScopeAssignment = 16384] = "TypeSetDuringScopeAssignment", SymbolFlags[SymbolFlags.Constant = 32768] = "Constant", SymbolFlags[SymbolFlags.Optional = 65536] = "Optional", SymbolFlags[SymbolFlags.RecursivelyReferenced = 131072] = "RecursivelyReferenced", SymbolFlags[SymbolFlags.Bound = 262144] = "Bound", SymbolFlags[SymbolFlags.CompilerGenerated = 524288] = "CompilerGenerated", (VarFlags = TypeScript.VarFlags || (TypeScript.VarFlags = {}))[VarFlags.None = 0] = "None", VarFlags[VarFlags.Exported = 1] = "Exported", VarFlags[VarFlags.Private = 2] = "Private", VarFlags[VarFlags.Public = 4] = "Public", VarFlags[VarFlags.Ambient = 8] = "Ambient", VarFlags[VarFlags.Static = 16] = "Static", VarFlags[VarFlags.LocalStatic = 32] = "LocalStatic", VarFlags[VarFlags.GetAccessor = 64] = "GetAccessor", VarFlags[VarFlags.SetAccessor = 128] = "SetAccessor", VarFlags[VarFlags.AutoInit = 256] = "AutoInit", VarFlags[VarFlags.Property = 512] = "Property", VarFlags[VarFlags.Readonly = 1024] = "Readonly", VarFlags[VarFlags.Class = 2048] = "Class", VarFlags[VarFlags.ClassProperty = 4096] = "ClassProperty", VarFlags[VarFlags.ClassBodyProperty = 8192] = "ClassBodyProperty", VarFlags[VarFlags.ClassConstructorProperty = 16384] = "ClassConstructorProperty", VarFlags[VarFlags.ClassSuperMustBeFirstCallInConstructor = 32768] = "ClassSuperMustBeFirstCallInConstructor", VarFlags[VarFlags.Constant = 65536] = "Constant", VarFlags[VarFlags.MustCaptureThis = 131072] = "MustCaptureThis", (FncFlags = TypeScript.FncFlags || (TypeScript.FncFlags = {}))[FncFlags.None = 0] = "None", FncFlags[FncFlags.Exported = 1] = "Exported", FncFlags[FncFlags.Private = 2] = "Private", FncFlags[FncFlags.Public = 4] = "Public", FncFlags[FncFlags.Ambient = 8] = "Ambient", FncFlags[FncFlags.Static = 16] = "Static", FncFlags[FncFlags.LocalStatic = 32] = "LocalStatic", FncFlags[FncFlags.GetAccessor = 64] = "GetAccessor", FncFlags[FncFlags.SetAccessor = 128] = "SetAccessor", FncFlags[FncFlags.Definition = 256] = "Definition", FncFlags[FncFlags.Signature = 512] = "Signature", FncFlags[FncFlags.Method = 1024] = "Method", FncFlags[FncFlags.HasReturnExpression = 2048] = "HasReturnExpression", FncFlags[FncFlags.CallMember = 4096] = "CallMember", FncFlags[FncFlags.ConstructMember = 8192] = "ConstructMember", FncFlags[FncFlags.HasSelfReference = 16384] = "HasSelfReference", FncFlags[FncFlags.IsFatArrowFunction = 32768] = "IsFatArrowFunction", FncFlags[FncFlags.IndexerMember = 65536] = "IndexerMember", FncFlags[FncFlags.IsFunctionExpression = 131072] = "IsFunctionExpression", FncFlags[FncFlags.ClassMethod = 262144] = "ClassMethod", FncFlags[FncFlags.ClassPropertyMethodExported = 524288] = "ClassPropertyMethodExported", (SignatureFlags = TypeScript.SignatureFlags || (TypeScript.SignatureFlags = {}))[SignatureFlags.None = 0] = "None", SignatureFlags[SignatureFlags.IsIndexer = 1] = "IsIndexer", SignatureFlags[SignatureFlags.IsStringIndexer = 2] = "IsStringIndexer", SignatureFlags[SignatureFlags.IsNumberIndexer = 4] = "IsNumberIndexer", TypeScript.ToDeclFlags = function(fncOrVarOrSymbolOrModuleFlags) {
+}, (ErrorRecoverySet = TypeScript1.ErrorRecoverySet || (TypeScript1.ErrorRecoverySet = {}))[ErrorRecoverySet.None = 0] = "None", ErrorRecoverySet[ErrorRecoverySet.Comma = 1] = "Comma", ErrorRecoverySet[ErrorRecoverySet.SColon = 2] = "SColon", ErrorRecoverySet[ErrorRecoverySet.Asg = 4] = "Asg", ErrorRecoverySet[ErrorRecoverySet.BinOp = 8] = "BinOp", ErrorRecoverySet[ErrorRecoverySet.RBrack = 16] = "RBrack", ErrorRecoverySet[ErrorRecoverySet.RCurly = 32] = "RCurly", ErrorRecoverySet[ErrorRecoverySet.RParen = 64] = "RParen", ErrorRecoverySet[ErrorRecoverySet.Dot = 128] = "Dot", ErrorRecoverySet[ErrorRecoverySet.Colon = 256] = "Colon", ErrorRecoverySet[ErrorRecoverySet.PrimType = 512] = "PrimType", ErrorRecoverySet[ErrorRecoverySet.AddOp = 1024] = "AddOp", ErrorRecoverySet[ErrorRecoverySet.LCurly = 2048] = "LCurly", ErrorRecoverySet[ErrorRecoverySet.PreOp = 4096] = "PreOp", ErrorRecoverySet[ErrorRecoverySet.RegExp = 8192] = "RegExp", ErrorRecoverySet[ErrorRecoverySet.LParen = 16384] = "LParen", ErrorRecoverySet[ErrorRecoverySet.LBrack = 32768] = "LBrack", ErrorRecoverySet[ErrorRecoverySet.Scope = 65536] = "Scope", ErrorRecoverySet[ErrorRecoverySet.In = 131072] = "In", ErrorRecoverySet[ErrorRecoverySet.SCase = 262144] = "SCase", ErrorRecoverySet[ErrorRecoverySet.Else = 524288] = "Else", ErrorRecoverySet[ErrorRecoverySet.Catch = 1048576] = "Catch", ErrorRecoverySet[ErrorRecoverySet.Var = 2097152] = "Var", ErrorRecoverySet[ErrorRecoverySet.Stmt = 4194304] = "Stmt", ErrorRecoverySet[ErrorRecoverySet.While = 8388608] = "While", ErrorRecoverySet[ErrorRecoverySet.ID = 16777216] = "ID", ErrorRecoverySet[ErrorRecoverySet.Prefix = 33554432] = "Prefix", ErrorRecoverySet[ErrorRecoverySet.Literal = 67108864] = "Literal", ErrorRecoverySet[ErrorRecoverySet.RLit = 134217728] = "RLit", ErrorRecoverySet[ErrorRecoverySet.Func = 268435456] = "Func", ErrorRecoverySet[ErrorRecoverySet.EOF = 536870912] = "EOF", ErrorRecoverySet[ErrorRecoverySet.TypeScriptS = 1073741824] = "TypeScriptS", ErrorRecoverySet[ErrorRecoverySet.ExprStart = 520158210] = "ExprStart", ErrorRecoverySet[ErrorRecoverySet.StmtStart = 1608580098] = "StmtStart", ErrorRecoverySet[ErrorRecoverySet.Postfix = 49280] = "Postfix", (AllowedElements = TypeScript1.AllowedElements || (TypeScript1.AllowedElements = {}))[AllowedElements.None = 0] = "None", AllowedElements[AllowedElements.ModuleDeclarations = 4] = "ModuleDeclarations", AllowedElements[AllowedElements.ClassDeclarations = 8] = "ClassDeclarations", AllowedElements[AllowedElements.InterfaceDeclarations = 16] = "InterfaceDeclarations", AllowedElements[AllowedElements.AmbientDeclarations = 1024] = "AmbientDeclarations", AllowedElements[AllowedElements.Properties = 2048] = "Properties", AllowedElements[AllowedElements.Global = 1052] = "Global", AllowedElements[AllowedElements.QuickParse = 3100] = "QuickParse", (Modifiers = TypeScript1.Modifiers || (TypeScript1.Modifiers = {}))[Modifiers.None = 0] = "None", Modifiers[Modifiers.Private = 1] = "Private", Modifiers[Modifiers.Public = 2] = "Public", Modifiers[Modifiers.Readonly = 4] = "Readonly", Modifiers[Modifiers.Ambient = 8] = "Ambient", Modifiers[Modifiers.Exported = 16] = "Exported", Modifiers[Modifiers.Getter = 32] = "Getter", Modifiers[Modifiers.Setter = 64] = "Setter", Modifiers[Modifiers.Static = 128] = "Static", (ASTFlags = TypeScript1.ASTFlags || (TypeScript1.ASTFlags = {}))[ASTFlags.None = 0] = "None", ASTFlags[ASTFlags.ExplicitSemicolon = 1] = "ExplicitSemicolon", ASTFlags[ASTFlags.AutomaticSemicolon = 2] = "AutomaticSemicolon", ASTFlags[ASTFlags.Writeable = 4] = "Writeable", ASTFlags[ASTFlags.Error = 8] = "Error", ASTFlags[ASTFlags.DotLHSPartial = 16] = "DotLHSPartial", ASTFlags[ASTFlags.DotLHS = 32] = "DotLHS", ASTFlags[ASTFlags.IsStatement = 64] = "IsStatement", ASTFlags[ASTFlags.StrictMode = 128] = "StrictMode", ASTFlags[ASTFlags.PossibleOptionalParameter = 256] = "PossibleOptionalParameter", ASTFlags[ASTFlags.ClassBaseConstructorCall = 512] = "ClassBaseConstructorCall", ASTFlags[ASTFlags.OptionalName = 1024] = "OptionalName", ASTFlags[ASTFlags.SkipNextRParen = 2048] = "SkipNextRParen", (DeclFlags = TypeScript1.DeclFlags || (TypeScript1.DeclFlags = {}))[DeclFlags.None = 0] = "None", DeclFlags[DeclFlags.Exported = 1] = "Exported", DeclFlags[DeclFlags.Private = 2] = "Private", DeclFlags[DeclFlags.Public = 4] = "Public", DeclFlags[DeclFlags.Ambient = 8] = "Ambient", DeclFlags[DeclFlags.Static = 16] = "Static", DeclFlags[DeclFlags.LocalStatic = 32] = "LocalStatic", DeclFlags[DeclFlags.GetAccessor = 64] = "GetAccessor", DeclFlags[DeclFlags.SetAccessor = 128] = "SetAccessor", (ModuleFlags = TypeScript1.ModuleFlags || (TypeScript1.ModuleFlags = {}))[ModuleFlags.None = 0] = "None", ModuleFlags[ModuleFlags.Exported = 1] = "Exported", ModuleFlags[ModuleFlags.Private = 2] = "Private", ModuleFlags[ModuleFlags.Public = 4] = "Public", ModuleFlags[ModuleFlags.Ambient = 8] = "Ambient", ModuleFlags[ModuleFlags.Static = 16] = "Static", ModuleFlags[ModuleFlags.LocalStatic = 32] = "LocalStatic", ModuleFlags[ModuleFlags.GetAccessor = 64] = "GetAccessor", ModuleFlags[ModuleFlags.SetAccessor = 128] = "SetAccessor", ModuleFlags[ModuleFlags.IsEnum = 256] = "IsEnum", ModuleFlags[ModuleFlags.ShouldEmitModuleDecl = 512] = "ShouldEmitModuleDecl", ModuleFlags[ModuleFlags.IsWholeFile = 1024] = "IsWholeFile", ModuleFlags[ModuleFlags.IsDynamic = 2048] = "IsDynamic", ModuleFlags[ModuleFlags.MustCaptureThis = 4096] = "MustCaptureThis", (SymbolFlags = TypeScript1.SymbolFlags || (TypeScript1.SymbolFlags = {}))[SymbolFlags.None = 0] = "None", SymbolFlags[SymbolFlags.Exported = 1] = "Exported", SymbolFlags[SymbolFlags.Private = 2] = "Private", SymbolFlags[SymbolFlags.Public = 4] = "Public", SymbolFlags[SymbolFlags.Ambient = 8] = "Ambient", SymbolFlags[SymbolFlags.Static = 16] = "Static", SymbolFlags[SymbolFlags.LocalStatic = 32] = "LocalStatic", SymbolFlags[SymbolFlags.GetAccessor = 64] = "GetAccessor", SymbolFlags[SymbolFlags.SetAccessor = 128] = "SetAccessor", SymbolFlags[SymbolFlags.Property = 256] = "Property", SymbolFlags[SymbolFlags.Readonly = 512] = "Readonly", SymbolFlags[SymbolFlags.ModuleMember = 1024] = "ModuleMember", SymbolFlags[SymbolFlags.InterfaceMember = 2048] = "InterfaceMember", SymbolFlags[SymbolFlags.ClassMember = 4096] = "ClassMember", SymbolFlags[SymbolFlags.BuiltIn = 8192] = "BuiltIn", SymbolFlags[SymbolFlags.TypeSetDuringScopeAssignment = 16384] = "TypeSetDuringScopeAssignment", SymbolFlags[SymbolFlags.Constant = 32768] = "Constant", SymbolFlags[SymbolFlags.Optional = 65536] = "Optional", SymbolFlags[SymbolFlags.RecursivelyReferenced = 131072] = "RecursivelyReferenced", SymbolFlags[SymbolFlags.Bound = 262144] = "Bound", SymbolFlags[SymbolFlags.CompilerGenerated = 524288] = "CompilerGenerated", (VarFlags = TypeScript1.VarFlags || (TypeScript1.VarFlags = {}))[VarFlags.None = 0] = "None", VarFlags[VarFlags.Exported = 1] = "Exported", VarFlags[VarFlags.Private = 2] = "Private", VarFlags[VarFlags.Public = 4] = "Public", VarFlags[VarFlags.Ambient = 8] = "Ambient", VarFlags[VarFlags.Static = 16] = "Static", VarFlags[VarFlags.LocalStatic = 32] = "LocalStatic", VarFlags[VarFlags.GetAccessor = 64] = "GetAccessor", VarFlags[VarFlags.SetAccessor = 128] = "SetAccessor", VarFlags[VarFlags.AutoInit = 256] = "AutoInit", VarFlags[VarFlags.Property = 512] = "Property", VarFlags[VarFlags.Readonly = 1024] = "Readonly", VarFlags[VarFlags.Class = 2048] = "Class", VarFlags[VarFlags.ClassProperty = 4096] = "ClassProperty", VarFlags[VarFlags.ClassBodyProperty = 8192] = "ClassBodyProperty", VarFlags[VarFlags.ClassConstructorProperty = 16384] = "ClassConstructorProperty", VarFlags[VarFlags.ClassSuperMustBeFirstCallInConstructor = 32768] = "ClassSuperMustBeFirstCallInConstructor", VarFlags[VarFlags.Constant = 65536] = "Constant", VarFlags[VarFlags.MustCaptureThis = 131072] = "MustCaptureThis", (FncFlags = TypeScript1.FncFlags || (TypeScript1.FncFlags = {}))[FncFlags.None = 0] = "None", FncFlags[FncFlags.Exported = 1] = "Exported", FncFlags[FncFlags.Private = 2] = "Private", FncFlags[FncFlags.Public = 4] = "Public", FncFlags[FncFlags.Ambient = 8] = "Ambient", FncFlags[FncFlags.Static = 16] = "Static", FncFlags[FncFlags.LocalStatic = 32] = "LocalStatic", FncFlags[FncFlags.GetAccessor = 64] = "GetAccessor", FncFlags[FncFlags.SetAccessor = 128] = "SetAccessor", FncFlags[FncFlags.Definition = 256] = "Definition", FncFlags[FncFlags.Signature = 512] = "Signature", FncFlags[FncFlags.Method = 1024] = "Method", FncFlags[FncFlags.HasReturnExpression = 2048] = "HasReturnExpression", FncFlags[FncFlags.CallMember = 4096] = "CallMember", FncFlags[FncFlags.ConstructMember = 8192] = "ConstructMember", FncFlags[FncFlags.HasSelfReference = 16384] = "HasSelfReference", FncFlags[FncFlags.IsFatArrowFunction = 32768] = "IsFatArrowFunction", FncFlags[FncFlags.IndexerMember = 65536] = "IndexerMember", FncFlags[FncFlags.IsFunctionExpression = 131072] = "IsFunctionExpression", FncFlags[FncFlags.ClassMethod = 262144] = "ClassMethod", FncFlags[FncFlags.ClassPropertyMethodExported = 524288] = "ClassPropertyMethodExported", (SignatureFlags = TypeScript1.SignatureFlags || (TypeScript1.SignatureFlags = {}))[SignatureFlags.None = 0] = "None", SignatureFlags[SignatureFlags.IsIndexer = 1] = "IsIndexer", SignatureFlags[SignatureFlags.IsStringIndexer = 2] = "IsStringIndexer", SignatureFlags[SignatureFlags.IsNumberIndexer = 4] = "IsNumberIndexer", TypeScript1.ToDeclFlags = function(fncOrVarOrSymbolOrModuleFlags) {
     return fncOrVarOrSymbolOrModuleFlags;
-}, (TypeFlags = TypeScript.TypeFlags || (TypeScript.TypeFlags = {}))[TypeFlags.None = 0] = "None", TypeFlags[TypeFlags.HasImplementation = 1] = "HasImplementation", TypeFlags[TypeFlags.HasSelfReference = 2] = "HasSelfReference", TypeFlags[TypeFlags.MergeResult = 4] = "MergeResult", TypeFlags[TypeFlags.IsEnum = 8] = "IsEnum", TypeFlags[TypeFlags.BuildingName = 16] = "BuildingName", TypeFlags[TypeFlags.HasBaseType = 32] = "HasBaseType", TypeFlags[TypeFlags.HasBaseTypeOfObject = 64] = "HasBaseTypeOfObject", TypeFlags[TypeFlags.IsClass = 128] = "IsClass", (TypeRelationshipFlags = TypeScript.TypeRelationshipFlags || (TypeScript.TypeRelationshipFlags = {}))[TypeRelationshipFlags.SuccessfulComparison = 0] = "SuccessfulComparison", TypeRelationshipFlags[TypeRelationshipFlags.SourceIsNullTargetIsVoidOrUndefined = 1] = "SourceIsNullTargetIsVoidOrUndefined", TypeRelationshipFlags[TypeRelationshipFlags.RequiredPropertyIsMissing = 2] = "RequiredPropertyIsMissing", TypeRelationshipFlags[TypeRelationshipFlags.IncompatibleSignatures = 4] = "IncompatibleSignatures", TypeRelationshipFlags[TypeRelationshipFlags.SourceSignatureHasTooManyParameters = 3] = "SourceSignatureHasTooManyParameters", TypeRelationshipFlags[TypeRelationshipFlags.IncompatibleReturnTypes = 16] = "IncompatibleReturnTypes", TypeRelationshipFlags[TypeRelationshipFlags.IncompatiblePropertyTypes = 32] = "IncompatiblePropertyTypes", TypeRelationshipFlags[TypeRelationshipFlags.IncompatibleParameterTypes = 64] = "IncompatibleParameterTypes", (CodeGenTarget = TypeScript.CodeGenTarget || (TypeScript.CodeGenTarget = {}))[CodeGenTarget.ES3 = 0] = "ES3", CodeGenTarget[CodeGenTarget.ES5 = 1] = "ES5", (ModuleGenTarget = TypeScript.ModuleGenTarget || (TypeScript.ModuleGenTarget = {}))[ModuleGenTarget.Synchronous = 0] = "Synchronous", ModuleGenTarget[ModuleGenTarget.Asynchronous = 1] = "Asynchronous", ModuleGenTarget[ModuleGenTarget.Local = 2] = "Local", TypeScript.codeGenTarget = 0, TypeScript.moduleGenTarget = 0, TypeScript.optimizeModuleCodeGen = !0, TypeScript.flagsToString = function(e, flags) {
+}, (TypeFlags = TypeScript1.TypeFlags || (TypeScript1.TypeFlags = {}))[TypeFlags.None = 0] = "None", TypeFlags[TypeFlags.HasImplementation = 1] = "HasImplementation", TypeFlags[TypeFlags.HasSelfReference = 2] = "HasSelfReference", TypeFlags[TypeFlags.MergeResult = 4] = "MergeResult", TypeFlags[TypeFlags.IsEnum = 8] = "IsEnum", TypeFlags[TypeFlags.BuildingName = 16] = "BuildingName", TypeFlags[TypeFlags.HasBaseType = 32] = "HasBaseType", TypeFlags[TypeFlags.HasBaseTypeOfObject = 64] = "HasBaseTypeOfObject", TypeFlags[TypeFlags.IsClass = 128] = "IsClass", (TypeRelationshipFlags = TypeScript1.TypeRelationshipFlags || (TypeScript1.TypeRelationshipFlags = {}))[TypeRelationshipFlags.SuccessfulComparison = 0] = "SuccessfulComparison", TypeRelationshipFlags[TypeRelationshipFlags.SourceIsNullTargetIsVoidOrUndefined = 1] = "SourceIsNullTargetIsVoidOrUndefined", TypeRelationshipFlags[TypeRelationshipFlags.RequiredPropertyIsMissing = 2] = "RequiredPropertyIsMissing", TypeRelationshipFlags[TypeRelationshipFlags.IncompatibleSignatures = 4] = "IncompatibleSignatures", TypeRelationshipFlags[TypeRelationshipFlags.SourceSignatureHasTooManyParameters = 3] = "SourceSignatureHasTooManyParameters", TypeRelationshipFlags[TypeRelationshipFlags.IncompatibleReturnTypes = 16] = "IncompatibleReturnTypes", TypeRelationshipFlags[TypeRelationshipFlags.IncompatiblePropertyTypes = 32] = "IncompatiblePropertyTypes", TypeRelationshipFlags[TypeRelationshipFlags.IncompatibleParameterTypes = 64] = "IncompatibleParameterTypes", (CodeGenTarget = TypeScript1.CodeGenTarget || (TypeScript1.CodeGenTarget = {}))[CodeGenTarget.ES3 = 0] = "ES3", CodeGenTarget[CodeGenTarget.ES5 = 1] = "ES5", (ModuleGenTarget = TypeScript1.ModuleGenTarget || (TypeScript1.ModuleGenTarget = {}))[ModuleGenTarget.Synchronous = 0] = "Synchronous", ModuleGenTarget[ModuleGenTarget.Asynchronous = 1] = "Asynchronous", ModuleGenTarget[ModuleGenTarget.Local = 2] = "Local", TypeScript1.codeGenTarget = 0, TypeScript1.moduleGenTarget = 0, TypeScript1.optimizeModuleCodeGen = !0, TypeScript1.flagsToString = function(e, flags) {
     for(var builder = "", i = 1; i < -2147483648; i <<= 1)if ((flags & i) != 0) {
         for(var k in e)if (e[k] == i) {
             builder.length > 0 && (builder += "|"), builder += k;
diff --git a/crates/swc/tests/tsc-references/parserRealSource3.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource3.2.minified.js
index a277cf1fb646..84517dba8657 100644
--- a/crates/swc/tests/tsc-references/parserRealSource3.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource3.2.minified.js
@@ -1,3 +1,3 @@
 //// [parserRealSource3.ts]
-var TypeScript, NodeType;
-(NodeType = (TypeScript = {}).NodeType || (TypeScript.NodeType = {}))[NodeType.None = 0] = "None", NodeType[NodeType.Empty = 1] = "Empty", NodeType[NodeType.EmptyExpr = 2] = "EmptyExpr", NodeType[NodeType.True = 3] = "True", NodeType[NodeType.False = 4] = "False", NodeType[NodeType.This = 5] = "This", NodeType[NodeType.Super = 6] = "Super", NodeType[NodeType.QString = 7] = "QString", NodeType[NodeType.Regex = 8] = "Regex", NodeType[NodeType.Null = 9] = "Null", NodeType[NodeType.ArrayLit = 10] = "ArrayLit", NodeType[NodeType.ObjectLit = 11] = "ObjectLit", NodeType[NodeType.Void = 12] = "Void", NodeType[NodeType.Comma = 13] = "Comma", NodeType[NodeType.Pos = 14] = "Pos", NodeType[NodeType.Neg = 15] = "Neg", NodeType[NodeType.Delete = 16] = "Delete", NodeType[NodeType.Await = 17] = "Await", NodeType[NodeType.In = 18] = "In", NodeType[NodeType.Dot = 19] = "Dot", NodeType[NodeType.From = 20] = "From", NodeType[NodeType.Is = 21] = "Is", NodeType[NodeType.InstOf = 22] = "InstOf", NodeType[NodeType.Typeof = 23] = "Typeof", NodeType[NodeType.NumberLit = 24] = "NumberLit", NodeType[NodeType.Name = 25] = "Name", NodeType[NodeType.TypeRef = 26] = "TypeRef", NodeType[NodeType.Index = 27] = "Index", NodeType[NodeType.Call = 28] = "Call", NodeType[NodeType.New = 29] = "New", NodeType[NodeType.Asg = 30] = "Asg", NodeType[NodeType.AsgAdd = 31] = "AsgAdd", NodeType[NodeType.AsgSub = 32] = "AsgSub", NodeType[NodeType.AsgDiv = 33] = "AsgDiv", NodeType[NodeType.AsgMul = 34] = "AsgMul", NodeType[NodeType.AsgMod = 35] = "AsgMod", NodeType[NodeType.AsgAnd = 36] = "AsgAnd", NodeType[NodeType.AsgXor = 37] = "AsgXor", NodeType[NodeType.AsgOr = 38] = "AsgOr", NodeType[NodeType.AsgLsh = 39] = "AsgLsh", NodeType[NodeType.AsgRsh = 40] = "AsgRsh", NodeType[NodeType.AsgRs2 = 41] = "AsgRs2", NodeType[NodeType.ConditionalExpression = 42] = "ConditionalExpression", NodeType[NodeType.LogOr = 43] = "LogOr", NodeType[NodeType.LogAnd = 44] = "LogAnd", NodeType[NodeType.Or = 45] = "Or", NodeType[NodeType.Xor = 46] = "Xor", NodeType[NodeType.And = 47] = "And", NodeType[NodeType.Eq = 48] = "Eq", NodeType[NodeType.Ne = 49] = "Ne", NodeType[NodeType.Eqv = 50] = "Eqv", NodeType[NodeType.NEqv = 51] = "NEqv", NodeType[NodeType.Lt = 52] = "Lt", NodeType[NodeType.Le = 53] = "Le", NodeType[NodeType.Gt = 54] = "Gt", NodeType[NodeType.Ge = 55] = "Ge", NodeType[NodeType.Add = 56] = "Add", NodeType[NodeType.Sub = 57] = "Sub", NodeType[NodeType.Mul = 58] = "Mul", NodeType[NodeType.Div = 59] = "Div", NodeType[NodeType.Mod = 60] = "Mod", NodeType[NodeType.Lsh = 61] = "Lsh", NodeType[NodeType.Rsh = 62] = "Rsh", NodeType[NodeType.Rs2 = 63] = "Rs2", NodeType[NodeType.Not = 64] = "Not", NodeType[NodeType.LogNot = 65] = "LogNot", NodeType[NodeType.IncPre = 66] = "IncPre", NodeType[NodeType.DecPre = 67] = "DecPre", NodeType[NodeType.IncPost = 68] = "IncPost", NodeType[NodeType.DecPost = 69] = "DecPost", NodeType[NodeType.TypeAssertion = 70] = "TypeAssertion", NodeType[NodeType.FuncDecl = 71] = "FuncDecl", NodeType[NodeType.Member = 72] = "Member", NodeType[NodeType.VarDecl = 73] = "VarDecl", NodeType[NodeType.ArgDecl = 74] = "ArgDecl", NodeType[NodeType.Return = 75] = "Return", NodeType[NodeType.Break = 76] = "Break", NodeType[NodeType.Continue = 77] = "Continue", NodeType[NodeType.Throw = 78] = "Throw", NodeType[NodeType.For = 79] = "For", NodeType[NodeType.ForIn = 80] = "ForIn", NodeType[NodeType.If = 81] = "If", NodeType[NodeType.While = 82] = "While", NodeType[NodeType.DoWhile = 83] = "DoWhile", NodeType[NodeType.Block = 84] = "Block", NodeType[NodeType.Case = 85] = "Case", NodeType[NodeType.Switch = 86] = "Switch", NodeType[NodeType.Try = 87] = "Try", NodeType[NodeType.TryCatch = 88] = "TryCatch", NodeType[NodeType.TryFinally = 89] = "TryFinally", NodeType[NodeType.Finally = 90] = "Finally", NodeType[NodeType.Catch = 91] = "Catch", NodeType[NodeType.List = 92] = "List", NodeType[NodeType.Script = 93] = "Script", NodeType[NodeType.ClassDeclaration = 94] = "ClassDeclaration", NodeType[NodeType.InterfaceDeclaration = 95] = "InterfaceDeclaration", NodeType[NodeType.ModuleDeclaration = 96] = "ModuleDeclaration", NodeType[NodeType.ImportDeclaration = 97] = "ImportDeclaration", NodeType[NodeType.With = 98] = "With", NodeType[NodeType.Label = 99] = "Label", NodeType[NodeType.LabeledStatement = 100] = "LabeledStatement", NodeType[NodeType.EBStart = 101] = "EBStart", NodeType[NodeType.GotoEB = 102] = "GotoEB", NodeType[NodeType.EndCode = 103] = "EndCode", NodeType[NodeType.Error = 104] = "Error", NodeType[NodeType.Comment = 105] = "Comment", NodeType[NodeType.Debugger = 106] = "Debugger", NodeType[NodeType.GeneralNode = 71] = "GeneralNode", NodeType[NodeType.LastAsg = 41] = "LastAsg";
+var TypeScript, TypeScript1, NodeType;
+(NodeType = (TypeScript1 = TypeScript || (TypeScript = {})).NodeType || (TypeScript1.NodeType = {}))[NodeType.None = 0] = "None", NodeType[NodeType.Empty = 1] = "Empty", NodeType[NodeType.EmptyExpr = 2] = "EmptyExpr", NodeType[NodeType.True = 3] = "True", NodeType[NodeType.False = 4] = "False", NodeType[NodeType.This = 5] = "This", NodeType[NodeType.Super = 6] = "Super", NodeType[NodeType.QString = 7] = "QString", NodeType[NodeType.Regex = 8] = "Regex", NodeType[NodeType.Null = 9] = "Null", NodeType[NodeType.ArrayLit = 10] = "ArrayLit", NodeType[NodeType.ObjectLit = 11] = "ObjectLit", NodeType[NodeType.Void = 12] = "Void", NodeType[NodeType.Comma = 13] = "Comma", NodeType[NodeType.Pos = 14] = "Pos", NodeType[NodeType.Neg = 15] = "Neg", NodeType[NodeType.Delete = 16] = "Delete", NodeType[NodeType.Await = 17] = "Await", NodeType[NodeType.In = 18] = "In", NodeType[NodeType.Dot = 19] = "Dot", NodeType[NodeType.From = 20] = "From", NodeType[NodeType.Is = 21] = "Is", NodeType[NodeType.InstOf = 22] = "InstOf", NodeType[NodeType.Typeof = 23] = "Typeof", NodeType[NodeType.NumberLit = 24] = "NumberLit", NodeType[NodeType.Name = 25] = "Name", NodeType[NodeType.TypeRef = 26] = "TypeRef", NodeType[NodeType.Index = 27] = "Index", NodeType[NodeType.Call = 28] = "Call", NodeType[NodeType.New = 29] = "New", NodeType[NodeType.Asg = 30] = "Asg", NodeType[NodeType.AsgAdd = 31] = "AsgAdd", NodeType[NodeType.AsgSub = 32] = "AsgSub", NodeType[NodeType.AsgDiv = 33] = "AsgDiv", NodeType[NodeType.AsgMul = 34] = "AsgMul", NodeType[NodeType.AsgMod = 35] = "AsgMod", NodeType[NodeType.AsgAnd = 36] = "AsgAnd", NodeType[NodeType.AsgXor = 37] = "AsgXor", NodeType[NodeType.AsgOr = 38] = "AsgOr", NodeType[NodeType.AsgLsh = 39] = "AsgLsh", NodeType[NodeType.AsgRsh = 40] = "AsgRsh", NodeType[NodeType.AsgRs2 = 41] = "AsgRs2", NodeType[NodeType.ConditionalExpression = 42] = "ConditionalExpression", NodeType[NodeType.LogOr = 43] = "LogOr", NodeType[NodeType.LogAnd = 44] = "LogAnd", NodeType[NodeType.Or = 45] = "Or", NodeType[NodeType.Xor = 46] = "Xor", NodeType[NodeType.And = 47] = "And", NodeType[NodeType.Eq = 48] = "Eq", NodeType[NodeType.Ne = 49] = "Ne", NodeType[NodeType.Eqv = 50] = "Eqv", NodeType[NodeType.NEqv = 51] = "NEqv", NodeType[NodeType.Lt = 52] = "Lt", NodeType[NodeType.Le = 53] = "Le", NodeType[NodeType.Gt = 54] = "Gt", NodeType[NodeType.Ge = 55] = "Ge", NodeType[NodeType.Add = 56] = "Add", NodeType[NodeType.Sub = 57] = "Sub", NodeType[NodeType.Mul = 58] = "Mul", NodeType[NodeType.Div = 59] = "Div", NodeType[NodeType.Mod = 60] = "Mod", NodeType[NodeType.Lsh = 61] = "Lsh", NodeType[NodeType.Rsh = 62] = "Rsh", NodeType[NodeType.Rs2 = 63] = "Rs2", NodeType[NodeType.Not = 64] = "Not", NodeType[NodeType.LogNot = 65] = "LogNot", NodeType[NodeType.IncPre = 66] = "IncPre", NodeType[NodeType.DecPre = 67] = "DecPre", NodeType[NodeType.IncPost = 68] = "IncPost", NodeType[NodeType.DecPost = 69] = "DecPost", NodeType[NodeType.TypeAssertion = 70] = "TypeAssertion", NodeType[NodeType.FuncDecl = 71] = "FuncDecl", NodeType[NodeType.Member = 72] = "Member", NodeType[NodeType.VarDecl = 73] = "VarDecl", NodeType[NodeType.ArgDecl = 74] = "ArgDecl", NodeType[NodeType.Return = 75] = "Return", NodeType[NodeType.Break = 76] = "Break", NodeType[NodeType.Continue = 77] = "Continue", NodeType[NodeType.Throw = 78] = "Throw", NodeType[NodeType.For = 79] = "For", NodeType[NodeType.ForIn = 80] = "ForIn", NodeType[NodeType.If = 81] = "If", NodeType[NodeType.While = 82] = "While", NodeType[NodeType.DoWhile = 83] = "DoWhile", NodeType[NodeType.Block = 84] = "Block", NodeType[NodeType.Case = 85] = "Case", NodeType[NodeType.Switch = 86] = "Switch", NodeType[NodeType.Try = 87] = "Try", NodeType[NodeType.TryCatch = 88] = "TryCatch", NodeType[NodeType.TryFinally = 89] = "TryFinally", NodeType[NodeType.Finally = 90] = "Finally", NodeType[NodeType.Catch = 91] = "Catch", NodeType[NodeType.List = 92] = "List", NodeType[NodeType.Script = 93] = "Script", NodeType[NodeType.ClassDeclaration = 94] = "ClassDeclaration", NodeType[NodeType.InterfaceDeclaration = 95] = "InterfaceDeclaration", NodeType[NodeType.ModuleDeclaration = 96] = "ModuleDeclaration", NodeType[NodeType.ImportDeclaration = 97] = "ImportDeclaration", NodeType[NodeType.With = 98] = "With", NodeType[NodeType.Label = 99] = "Label", NodeType[NodeType.LabeledStatement = 100] = "LabeledStatement", NodeType[NodeType.EBStart = 101] = "EBStart", NodeType[NodeType.GotoEB = 102] = "GotoEB", NodeType[NodeType.EndCode = 103] = "EndCode", NodeType[NodeType.Error = 104] = "Error", NodeType[NodeType.Comment = 105] = "Comment", NodeType[NodeType.Debugger = 106] = "Debugger", NodeType[NodeType.GeneralNode = 71] = "GeneralNode", NodeType[NodeType.LastAsg = 41] = "LastAsg";
diff --git a/crates/swc/tests/tsc-references/parserRealSource5.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource5.2.minified.js
index 0e19563efe5e..655956e253bf 100644
--- a/crates/swc/tests/tsc-references/parserRealSource5.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource5.2.minified.js
@@ -1,7 +1,7 @@
 //// [parserRealSource5.ts]
-var TypeScript, PrintContext;
+var TypeScript, TypeScript1, PrintContext;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-TypeScript = {}, PrintContext = function() {
+TypeScript1 = TypeScript || (TypeScript = {}), PrintContext = function() {
     function PrintContext(outfile, parser) {
         _class_call_check(this, PrintContext), this.outfile = outfile, this.parser = parser, this.builder = "", this.indent1 = "  ", this.indentStrings = [], this.indentAmt = 0;
     }
@@ -24,9 +24,9 @@ TypeScript = {}, PrintContext = function() {
     }, _proto.writeLine = function(s) {
         this.builder += s, this.outfile.WriteLine(this.builder), this.builder = "";
     }, PrintContext;
-}(), TypeScript.PrintContext = PrintContext, TypeScript.prePrintAST = function(ast, parent, walker) {
+}(), TypeScript1.PrintContext = PrintContext, TypeScript1.prePrintAST = function(ast, parent, walker) {
     var pc = walker.state;
     return ast.print(pc), pc.increaseIndent(), ast;
-}, TypeScript.postPrintAST = function(ast, parent, walker) {
+}, TypeScript1.postPrintAST = function(ast, parent, walker) {
     return walker.state.decreaseIndent(), ast;
 };
diff --git a/crates/swc/tests/tsc-references/parserRealSource6.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource6.2.minified.js
index aac960b79cbb..4d80cec60aaa 100644
--- a/crates/swc/tests/tsc-references/parserRealSource6.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource6.2.minified.js
@@ -1,4 +1,5 @@
 //// [parserRealSource6.ts]
+var TypeScript;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 !function(TypeScript) {
     TypeScript.TypeCollectionContext = function TypeCollectionContext(scopeChain, checker) {
@@ -83,4 +84,4 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
         var context = new EnclosingScopeContext(logger, script, text, pos, isMemberCompletion);
         return (TypeScript.getAstWalkerFactory().walk(script, preFindEnclosingScope, null, null, context), null === context.scopeStartAST) ? null : context;
     };
-}({});
+}(TypeScript || (TypeScript = {}));
diff --git a/crates/swc/tests/tsc-references/parserRealSource8.2.minified.js b/crates/swc/tests/tsc-references/parserRealSource8.2.minified.js
index 0e0e38414223..52e57f36deaa 100644
--- a/crates/swc/tests/tsc-references/parserRealSource8.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserRealSource8.2.minified.js
@@ -1,4 +1,5 @@
 //// [parserRealSource8.ts]
+var TypeScript;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 !function(TypeScript) {
     function pushAssignScope(scope, context, type, classType, fnc) {
@@ -102,4 +103,4 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
         var context = walker.state, go = !0;
         return ast && (ast.nodeType == NodeType.ModuleDeclaration ? (popAssignScope(context), context.modDeclChain.pop(), context.modDeclChain.length >= 1 && (context.typeFlow.checker.currentModDecl = context.modDeclChain[context.modDeclChain.length - 1])) : ast.nodeType == NodeType.ClassDeclaration ? popAssignScope(context) : ast.nodeType == NodeType.InterfaceDeclaration ? popAssignScope(context) : ast.nodeType == NodeType.With ? popAssignScope(context) : ast.nodeType == NodeType.FuncDecl ? (!ast.isConstructor || hasFlag(ast.fncFlags, FncFlags.ClassMethod)) && !ast.isOverload && popAssignScope(context) : ast.nodeType == NodeType.Catch ? ast.param && popAssignScope(context) : go = !1), walker.options.goChildren = go, ast;
     };
-}({});
+}(TypeScript || (TypeScript = {}));
diff --git a/crates/swc/tests/tsc-references/parserSuperExpression1.2.minified.js b/crates/swc/tests/tsc-references/parserSuperExpression1.2.minified.js
index e14ac01a9cd7..d5584de0c7b4 100644
--- a/crates/swc/tests/tsc-references/parserSuperExpression1.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserSuperExpression1.2.minified.js
@@ -1,6 +1,6 @@
 //// [parserSuperExpression1.ts]
-var M1;
+var M1, M11;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
-(M1 = {}).M2 || (M1.M2 = {});
+(M11 = M1 || (M1 = {})).M2 || (M11.M2 = {});
diff --git a/crates/swc/tests/tsc-references/parserSuperExpression4.2.minified.js b/crates/swc/tests/tsc-references/parserSuperExpression4.2.minified.js
index a158e0de2a9e..9cbbbcff830d 100644
--- a/crates/swc/tests/tsc-references/parserSuperExpression4.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserSuperExpression4.2.minified.js
@@ -1,6 +1,6 @@
 //// [parserSuperExpression4.ts]
-var M1;
+var M1, M11;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
 import { _ as _set } from "@swc/helpers/_/_set";
-(M1 = {}).M2 || (M1.M2 = {});
+(M11 = M1 || (M1 = {})).M2 || (M11.M2 = {});
diff --git a/crates/swc/tests/tsc-references/parserindenter.2.minified.js b/crates/swc/tests/tsc-references/parserindenter.2.minified.js
index d7956c430f75..5d5ab4e4e84b 100644
--- a/crates/swc/tests/tsc-references/parserindenter.2.minified.js
+++ b/crates/swc/tests/tsc-references/parserindenter.2.minified.js
@@ -1,7 +1,7 @@
 //// [parserindenter.ts]
-var Formatting, Indenter;
+var Formatting, Formatting1, Indenter;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-Formatting = {}, Indenter = function() {
+Formatting1 = Formatting || (Formatting = {}), Indenter = function() {
     function Indenter(logger, tree, snapshot, languageHostIndentation, editorOptions, firstToken, smartIndent) {
         _class_call_check(this, Indenter), this.logger = logger, this.tree = tree, this.snapshot = snapshot, this.languageHostIndentation = languageHostIndentation, this.editorOptions = editorOptions, this.firstToken = firstToken, this.smartIndent = smartIndent, this.indentationBag = new IndentationBag(this.snapshot), this.scriptBlockBeginLineNumber = -1, this.offsetIndentationDeltas = new Dictionary_int_int(), this.tree.Root.SetIndentationOverride(""), this.ApplyScriptBlockIndentation(this.languageHostIndentation, this.tree), this.FillInheritedIndentation(this.tree);
     }
@@ -235,4 +235,4 @@ Formatting = {}, Indenter = function() {
         }
         return indentSize;
     }, Indenter;
-}(), Formatting.Indenter = Indenter;
+}(), Formatting1.Indenter = Indenter;
diff --git a/crates/swc/tests/tsc-references/plusOperatorWithBooleanType.2.minified.js b/crates/swc/tests/tsc-references/plusOperatorWithBooleanType.2.minified.js
index 799232a2c602..110a66286e37 100644
--- a/crates/swc/tests/tsc-references/plusOperatorWithBooleanType.2.minified.js
+++ b/crates/swc/tests/tsc-references/plusOperatorWithBooleanType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return !1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/plusOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/plusOperatorWithEnumType.2.minified.js
index 6c8ffb79db96..bf49619d56ed 100644
--- a/crates/swc/tests/tsc-references/plusOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/plusOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [plusOperatorWithEnumType.ts]
-var ENUM, ENUM1;
-ENUM = {}, (ENUM1 = {})[ENUM1.A = 0] = "A", ENUM1[ENUM1.B = 1] = "B", ENUM1[ENUM1[""] = 2] = "", ENUM[0];
+var ENUM, ENUM1, ENUM11;
+ENUM || (ENUM = {}), (ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", ENUM[0];
diff --git a/crates/swc/tests/tsc-references/plusOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/plusOperatorWithNumberType.2.minified.js
index 998962c1be5b..fd8519ccdf46 100644
--- a/crates/swc/tests/tsc-references/plusOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/plusOperatorWithNumberType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return 1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n, objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/plusOperatorWithStringType.2.minified.js b/crates/swc/tests/tsc-references/plusOperatorWithStringType.2.minified.js
index c2f261eedfaf..9b4bf1a19591 100644
--- a/crates/swc/tests/tsc-references/plusOperatorWithStringType.2.minified.js
+++ b/crates/swc/tests/tsc-references/plusOperatorWithStringType.2.minified.js
@@ -8,6 +8,6 @@ var STRING, M, A = function() {
         return "";
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), STRING.charAt(0), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/primtiveTypesAreIdentical.2.minified.js b/crates/swc/tests/tsc-references/primtiveTypesAreIdentical.2.minified.js
index 1115ba38027a..53901a79c026 100644
--- a/crates/swc/tests/tsc-references/primtiveTypesAreIdentical.2.minified.js
+++ b/crates/swc/tests/tsc-references/primtiveTypesAreIdentical.2.minified.js
@@ -1,3 +1,3 @@
 //// [primtiveTypesAreIdentical.ts]
-var E;
-(E = {})[E.A = 0] = "A";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/propertyAccess.2.minified.js b/crates/swc/tests/tsc-references/propertyAccess.2.minified.js
index c7d21b81a1bc..312f35c545a8 100644
--- a/crates/swc/tests/tsc-references/propertyAccess.2.minified.js
+++ b/crates/swc/tests/tsc-references/propertyAccess.2.minified.js
@@ -2,8 +2,8 @@
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-(Compass = {})[Compass.North = 0] = "North", Compass[Compass.South = 1] = "South", Compass[Compass.East = 2] = "East", Compass[Compass.West = 3] = "West";
-var bothIndex, stringOrNumber, someObject, Compass, numIndex = {
+(Compass1 = Compass || (Compass = {}))[Compass1.North = 0] = "North", Compass1[Compass1.South = 1] = "South", Compass1[Compass1.East = 2] = "East", Compass1[Compass1.West = 3] = "West";
+var Compass, bothIndex, stringOrNumber, someObject, Compass1, numIndex = {
     3: 'three',
     three: 'three'
 }, strIndex = {
diff --git a/crates/swc/tests/tsc-references/propertyNamesOfReservedWords.2.minified.js b/crates/swc/tests/tsc-references/propertyNamesOfReservedWords.2.minified.js
index 4c68c013bf7f..803a54ea32ee 100644
--- a/crates/swc/tests/tsc-references/propertyNamesOfReservedWords.2.minified.js
+++ b/crates/swc/tests/tsc-references/propertyNamesOfReservedWords.2.minified.js
@@ -1,4 +1,4 @@
 //// [propertyNamesOfReservedWords.ts]
-var c, i, a, E;
+var c, i, a, E, E1;
 import "@swc/helpers/_/_class_call_check";
-c.abstract, c.as, i.abstract, i.as, a.abstract, a.as, (E = {})[E.abstract = 0] = "abstract", E[E.as = 1] = "as", E[E.boolean = 2] = "boolean", E[E.break = 3] = "break", E[E.byte = 4] = "byte", E[E.case = 5] = "case", E[E.catch = 6] = "catch", E[E.char = 7] = "char", E[E.class = 8] = "class", E[E.continue = 9] = "continue", E[E.const = 10] = "const", E[E.debugger = 11] = "debugger", E[E.default = 12] = "default", E[E.delete = 13] = "delete", E[E.do = 14] = "do", E[E.double = 15] = "double", E[E.else = 16] = "else", E[E.enum = 17] = "enum", E[E.export = 18] = "export", E[E.extends = 19] = "extends", E[E.false = 20] = "false", E[E.final = 21] = "final", E[E.finally = 22] = "finally", E[E.float = 23] = "float", E[E.for = 24] = "for", E[E.function = 25] = "function", E[E.goto = 26] = "goto", E[E.if = 27] = "if", E[E.implements = 28] = "implements", E[E.import = 29] = "import", E[E.in = 30] = "in", E[E.instanceof = 31] = "instanceof", E[E.int = 32] = "int", E[E.interface = 33] = "interface", E[E.is = 34] = "is", E[E.long = 35] = "long", E[E.namespace = 36] = "namespace", E[E.native = 37] = "native", E[E.new = 38] = "new", E[E.null = 39] = "null", E[E.package = 40] = "package", E[E.private = 41] = "private", E[E.protected = 42] = "protected", E[E.public = 43] = "public", E[E.return = 44] = "return", E[E.short = 45] = "short", E[E.static = 46] = "static", E[E.super = 47] = "super", E[E.switch = 48] = "switch", E[E.synchronized = 49] = "synchronized", E[E.this = 50] = "this", E[E.throw = 51] = "throw", E[E.throws = 52] = "throws", E[E.transient = 53] = "transient", E[E.true = 54] = "true", E[E.try = 55] = "try", E[E.typeof = 56] = "typeof", E[E.use = 57] = "use", E[E.var = 58] = "var", E[E.void = 59] = "void", E[E.volatile = 60] = "volatile", E[E.while = 61] = "while", E[E.with = 62] = "with";
+c.abstract, c.as, i.abstract, i.as, a.abstract, a.as, (E1 = E || (E = {}))[E1.abstract = 0] = "abstract", E1[E1.as = 1] = "as", E1[E1.boolean = 2] = "boolean", E1[E1.break = 3] = "break", E1[E1.byte = 4] = "byte", E1[E1.case = 5] = "case", E1[E1.catch = 6] = "catch", E1[E1.char = 7] = "char", E1[E1.class = 8] = "class", E1[E1.continue = 9] = "continue", E1[E1.const = 10] = "const", E1[E1.debugger = 11] = "debugger", E1[E1.default = 12] = "default", E1[E1.delete = 13] = "delete", E1[E1.do = 14] = "do", E1[E1.double = 15] = "double", E1[E1.else = 16] = "else", E1[E1.enum = 17] = "enum", E1[E1.export = 18] = "export", E1[E1.extends = 19] = "extends", E1[E1.false = 20] = "false", E1[E1.final = 21] = "final", E1[E1.finally = 22] = "finally", E1[E1.float = 23] = "float", E1[E1.for = 24] = "for", E1[E1.function = 25] = "function", E1[E1.goto = 26] = "goto", E1[E1.if = 27] = "if", E1[E1.implements = 28] = "implements", E1[E1.import = 29] = "import", E1[E1.in = 30] = "in", E1[E1.instanceof = 31] = "instanceof", E1[E1.int = 32] = "int", E1[E1.interface = 33] = "interface", E1[E1.is = 34] = "is", E1[E1.long = 35] = "long", E1[E1.namespace = 36] = "namespace", E1[E1.native = 37] = "native", E1[E1.new = 38] = "new", E1[E1.null = 39] = "null", E1[E1.package = 40] = "package", E1[E1.private = 41] = "private", E1[E1.protected = 42] = "protected", E1[E1.public = 43] = "public", E1[E1.return = 44] = "return", E1[E1.short = 45] = "short", E1[E1.static = 46] = "static", E1[E1.super = 47] = "super", E1[E1.switch = 48] = "switch", E1[E1.synchronized = 49] = "synchronized", E1[E1.this = 50] = "this", E1[E1.throw = 51] = "throw", E1[E1.throws = 52] = "throws", E1[E1.transient = 53] = "transient", E1[E1.true = 54] = "true", E1[E1.try = 55] = "try", E1[E1.typeof = 56] = "typeof", E1[E1.use = 57] = "use", E1[E1.var = 58] = "var", E1[E1.void = 59] = "void", E1[E1.volatile = 60] = "volatile", E1[E1.while = 61] = "while", E1[E1.with = 62] = "with";
diff --git a/crates/swc/tests/tsc-references/scopeResolutionIdentifiers.2.minified.js b/crates/swc/tests/tsc-references/scopeResolutionIdentifiers.2.minified.js
index 73d6a733c096..1a28d02f267a 100644
--- a/crates/swc/tests/tsc-references/scopeResolutionIdentifiers.2.minified.js
+++ b/crates/swc/tests/tsc-references/scopeResolutionIdentifiers.2.minified.js
@@ -1,2 +1,4 @@
 //// [scopeResolutionIdentifiers.ts]
+var M1, M2, M3, M4;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
+(M1 || (M1 = {})).s, M2 || (M2 = {}), M3 || (M3 = {}), M4 || (M4 = {});
diff --git a/crates/swc/tests/tsc-references/staticPropertyNotInClassType.2.minified.js b/crates/swc/tests/tsc-references/staticPropertyNotInClassType.2.minified.js
index 0cb8eda16892..7cf02c5f80e4 100644
--- a/crates/swc/tests/tsc-references/staticPropertyNotInClassType.2.minified.js
+++ b/crates/swc/tests/tsc-references/staticPropertyNotInClassType.2.minified.js
@@ -1,8 +1,8 @@
 //// [staticPropertyNotInClassType.ts]
-var C, c, C1, c1;
+var NonGeneric, Generic, C, c, C1, c1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _create_class } from "@swc/helpers/_/_create_class";
-((C = function() {
+NonGeneric || (NonGeneric = {}), ((C = function() {
     function C(a, b) {
         _class_call_check(this, C), this.a = a, this.b = b;
     }
@@ -17,7 +17,7 @@ import { _ as _create_class } from "@swc/helpers/_/_create_class";
             set: function(v) {}
         }
     ]), C;
-}()) || (C = {})).bar = '', (c = new C(1, 2)).fn(), c.foo, c.bar, c.x, ((C1 = function() {
+}()) || (C = {})).bar = '', (c = new C(1, 2)).fn(), c.foo, c.bar, c.x, Generic || (Generic = {}), ((C1 = function() {
     function C(a, b) {
         _class_call_check(this, C), this.a = a, this.b = b;
     }
diff --git a/crates/swc/tests/tsc-references/strictPropertyInitialization.2.minified.js b/crates/swc/tests/tsc-references/strictPropertyInitialization.2.minified.js
index 3f381a56acd9..8cf584f8bd98 100644
--- a/crates/swc/tests/tsc-references/strictPropertyInitialization.2.minified.js
+++ b/crates/swc/tests/tsc-references/strictPropertyInitialization.2.minified.js
@@ -1,6 +1,6 @@
 //// [strictPropertyInitialization.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_private_field_get";
 import "@swc/helpers/_/_class_private_field_init";
 import "@swc/helpers/_/_class_private_field_set";
-Symbol(), (E = {}).A = "A", E.B = "B";
+Symbol(), (E1 = E || (E = {})).A = "A", E1.B = "B";
diff --git a/crates/swc/tests/tsc-references/stringEnumInElementAccess01.2.minified.js b/crates/swc/tests/tsc-references/stringEnumInElementAccess01.2.minified.js
index 7b326ed96bb6..97d337e646ae 100644
--- a/crates/swc/tests/tsc-references/stringEnumInElementAccess01.2.minified.js
+++ b/crates/swc/tests/tsc-references/stringEnumInElementAccess01.2.minified.js
@@ -1,3 +1,3 @@
 //// [stringEnumInElementAccess01.ts]
-var E;
-(E = {}).A = "a", E.B = "b", E.C = "c", item[e];
+var E, E1;
+(E1 = E || (E = {})).A = "a", E1.B = "b", E1.C = "c", item[e];
diff --git a/crates/swc/tests/tsc-references/stringLiteralTypeIsSubtypeOfString.2.minified.js b/crates/swc/tests/tsc-references/stringLiteralTypeIsSubtypeOfString.2.minified.js
index b65b2dd0a0d1..d2c4d16ffab9 100644
--- a/crates/swc/tests/tsc-references/stringLiteralTypeIsSubtypeOfString.2.minified.js
+++ b/crates/swc/tests/tsc-references/stringLiteralTypeIsSubtypeOfString.2.minified.js
@@ -1,4 +1,4 @@
 //// [stringLiteralTypeIsSubtypeOfString.ts]
-var E;
+var E, E1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/stringLiteralTypesOverloads01.2.minified.js b/crates/swc/tests/tsc-references/stringLiteralTypesOverloads01.2.minified.js
index 6d97ae87b0dd..aa202c314408 100644
--- a/crates/swc/tests/tsc-references/stringLiteralTypesOverloads01.2.minified.js
+++ b/crates/swc/tests/tsc-references/stringLiteralTypesOverloads01.2.minified.js
@@ -5,6 +5,6 @@ function getFalsyPrimitive(x) {
     if ("boolean" === x) return !1;
     throw "Invalid value";
 }
-getFalsyPrimitive("string"), getFalsyPrimitive('number'), getFalsyPrimitive("boolean");
-var string = "string", number = "number", boolean = "boolean", stringOrNumber = string || number, stringOrBoolean = string || boolean, booleanOrNumber = number || boolean, stringOrBooleanOrNumber = stringOrBoolean || number;
-getFalsyPrimitive(string), getFalsyPrimitive(number), getFalsyPrimitive(boolean), getFalsyPrimitive(stringOrNumber), getFalsyPrimitive(stringOrBoolean), getFalsyPrimitive(booleanOrNumber), getFalsyPrimitive(stringOrBooleanOrNumber);
+Consts1 || (Consts1 = {}), getFalsyPrimitive("string"), getFalsyPrimitive('number'), getFalsyPrimitive("boolean");
+var Consts1, Consts2, string = "string", number = "number", boolean = "boolean", stringOrNumber = string || number, stringOrBoolean = string || boolean, booleanOrNumber = number || boolean, stringOrBooleanOrNumber = stringOrBoolean || number;
+Consts2 || (Consts2 = {}), getFalsyPrimitive(string), getFalsyPrimitive(number), getFalsyPrimitive(boolean), getFalsyPrimitive(stringOrNumber), getFalsyPrimitive(stringOrBoolean), getFalsyPrimitive(booleanOrNumber), getFalsyPrimitive(stringOrBooleanOrNumber);
diff --git a/crates/swc/tests/tsc-references/stringLiteralTypesOverloads02.2.minified.js b/crates/swc/tests/tsc-references/stringLiteralTypesOverloads02.2.minified.js
index f13eb94bfc26..43a2cfce27ee 100644
--- a/crates/swc/tests/tsc-references/stringLiteralTypesOverloads02.2.minified.js
+++ b/crates/swc/tests/tsc-references/stringLiteralTypesOverloads02.2.minified.js
@@ -5,6 +5,6 @@ function getFalsyPrimitive(x) {
     if ("boolean" === x) return !1;
     throw "Invalid value";
 }
-getFalsyPrimitive("string"), getFalsyPrimitive('number'), getFalsyPrimitive("boolean");
-var string = "string", number = "number", boolean = "boolean", stringOrNumber = string || number, stringOrBoolean = string || boolean, booleanOrNumber = number || boolean, stringOrBooleanOrNumber = stringOrBoolean || number;
-getFalsyPrimitive(string), getFalsyPrimitive(number), getFalsyPrimitive(boolean), getFalsyPrimitive(stringOrNumber), getFalsyPrimitive(stringOrBoolean), getFalsyPrimitive(booleanOrNumber), getFalsyPrimitive(stringOrBooleanOrNumber);
+Consts1 || (Consts1 = {}), getFalsyPrimitive("string"), getFalsyPrimitive('number'), getFalsyPrimitive("boolean");
+var Consts1, Consts2, string = "string", number = "number", boolean = "boolean", stringOrNumber = string || number, stringOrBoolean = string || boolean, booleanOrNumber = number || boolean, stringOrBooleanOrNumber = stringOrBoolean || number;
+Consts2 || (Consts2 = {}), getFalsyPrimitive(string), getFalsyPrimitive(number), getFalsyPrimitive(boolean), getFalsyPrimitive(stringOrNumber), getFalsyPrimitive(stringOrBoolean), getFalsyPrimitive(booleanOrNumber), getFalsyPrimitive(stringOrBooleanOrNumber);
diff --git a/crates/swc/tests/tsc-references/subtypesOfAny.2.minified.js b/crates/swc/tests/tsc-references/subtypesOfAny.2.minified.js
index 2bb4b6f08f87..6959f847adf2 100644
--- a/crates/swc/tests/tsc-references/subtypesOfAny.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypesOfAny.2.minified.js
@@ -1,8 +1,8 @@
 //// [subtypesOfAny.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E = E1 || (E1 = {}))[E.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/subtypesOfTypeParameter.2.minified.js b/crates/swc/tests/tsc-references/subtypesOfTypeParameter.2.minified.js
index 7d271c973e0f..8ec98a3c49d9 100644
--- a/crates/swc/tests/tsc-references/subtypesOfTypeParameter.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypesOfTypeParameter.2.minified.js
@@ -3,8 +3,8 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
 function f() {}
-(E = {})[E.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E1 = E || (E = {}))[E1.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithConstraints2.2.minified.js b/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithConstraints2.2.minified.js
index a1b09417a170..a99ed1d0c8fe 100644
--- a/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithConstraints2.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithConstraints2.2.minified.js
@@ -1,8 +1,8 @@
 //// [subtypesOfTypeParameterWithConstraints2.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E = E1 || (E1 = {}))[E.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithRecursiveConstraints.2.minified.js b/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithRecursiveConstraints.2.minified.js
index fbf5fa5d0f9f..397aadf788db 100644
--- a/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithRecursiveConstraints.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypesOfTypeParameterWithRecursiveConstraints.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypesOfTypeParameterWithRecursiveConstraints.ts]
+var M1, M2;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+M1 || (M1 = {}), M2 || (M2 = {});
diff --git a/crates/swc/tests/tsc-references/subtypesOfUnion.2.minified.js b/crates/swc/tests/tsc-references/subtypesOfUnion.2.minified.js
index 1c7de44debc4..bf95162d5426 100644
--- a/crates/swc/tests/tsc-references/subtypesOfUnion.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypesOfUnion.2.minified.js
@@ -1,8 +1,8 @@
 //// [subtypesOfUnion.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(E = {})[E.e1 = 0] = "e1", E[E.e2 = 1] = "e2", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E = E1 || (E1 = {}))[E.e1 = 0] = "e1", E[E.e2 = 1] = "e2", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/subtypingWithCallSignatures.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithCallSignatures.2.minified.js
index 93ea71e7cf95..96d528bde1df 100644
--- a/crates/swc/tests/tsc-references/subtypingWithCallSignatures.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithCallSignatures.2.minified.js
@@ -1,5 +1,6 @@
 //// [subtypingWithCallSignatures.ts]
-foo1(function(x) {
+var CallSignature;
+CallSignature || (CallSignature = {}), foo1(function(x) {
     return 1;
 }), foo1(function(x) {
     return '';
diff --git a/crates/swc/tests/tsc-references/subtypingWithCallSignatures3.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithCallSignatures3.2.minified.js
index 35f7be0d3de8..fd3bd7bf3028 100644
--- a/crates/swc/tests/tsc-references/subtypingWithCallSignatures3.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithCallSignatures3.2.minified.js
@@ -1,8 +1,9 @@
 //// [subtypingWithCallSignatures3.ts]
+var Errors, WithGenericSignaturesInBaseType;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-foo2(function(x) {
+Errors || (Errors = {}), foo2(function(x) {
     return null;
 }), foo7(function(x) {
     return function(r) {
@@ -27,7 +28,7 @@ foo2(function(x) {
     return null;
 }), foo17(function(x) {
     return null;
-}), foo2(function(x) {
+}), WithGenericSignaturesInBaseType || (WithGenericSignaturesInBaseType = {}), foo2(function(x) {
     return [
         ''
     ];
diff --git a/crates/swc/tests/tsc-references/subtypingWithConstructSignatures.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithConstructSignatures.2.minified.js
index 0fb94f322e80..3cce021fb0d1 100644
--- a/crates/swc/tests/tsc-references/subtypingWithConstructSignatures.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithConstructSignatures.2.minified.js
@@ -1,3 +1,3 @@
 //// [subtypingWithConstructSignatures.ts]
-var rarg2, r3arg1, r4arg1;
-foo1(void 0), foo1(rarg2), foo2(r3arg1), foo2(r4arg1);
+var ConstructSignature, rarg2, r3arg1, r4arg1;
+ConstructSignature || (ConstructSignature = {}), foo1(void 0), foo1(rarg2), foo2(r3arg1), foo2(r4arg1);
diff --git a/crates/swc/tests/tsc-references/subtypingWithConstructSignatures3.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithConstructSignatures3.2.minified.js
index 8fa9ba739271..faed1e177d35 100644
--- a/crates/swc/tests/tsc-references/subtypingWithConstructSignatures3.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithConstructSignatures3.2.minified.js
@@ -1,6 +1,6 @@
 //// [subtypingWithConstructSignatures3.ts]
-var r1arg1, r2arg1, r3arg1, r4arg1, r5arg1, r6arg1, r7arg1, r7arg3, r8arg, r9arg, r3arg2;
+var Errors, WithGenericSignaturesInBaseType, r1arg1, r2arg1, r3arg1, r4arg1, r5arg1, r6arg1, r7arg1, r7arg3, r8arg, r9arg, r3arg2;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-foo2(r1arg1), foo7(r2arg1), foo8(r3arg1), foo10(r4arg1), foo11(r5arg1), foo12(r6arg1), foo15(r7arg1), foo15(r7arg3), foo16(r8arg), foo17(r9arg), foo2(void 0), foo3(r3arg2);
+Errors || (Errors = {}), foo2(r1arg1), foo7(r2arg1), foo8(r3arg1), foo10(r4arg1), foo11(r5arg1), foo12(r6arg1), foo15(r7arg1), foo15(r7arg3), foo16(r8arg), foo17(r9arg), WithGenericSignaturesInBaseType || (WithGenericSignaturesInBaseType = {}), foo2(void 0), foo3(r3arg2);
diff --git a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer.2.minified.js
index 084377b891ac..d88394226933 100644
--- a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithNumericIndexer.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer3.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer3.2.minified.js
index 2aeea0d3e203..90b2041fc47c 100644
--- a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer3.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer3.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithNumericIndexer3.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer4.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer4.2.minified.js
index 92beff97d7ec..9a8a7aa20e22 100644
--- a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer4.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer4.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithNumericIndexer4.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer5.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer5.2.minified.js
index d06dcc97d351..8869fac315c3 100644
--- a/crates/swc/tests/tsc-references/subtypingWithNumericIndexer5.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithNumericIndexer5.2.minified.js
@@ -1,2 +1,4 @@
 //// [subtypingWithNumericIndexer5.ts]
+var Generics;
 import "@swc/helpers/_/_class_call_check";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithObjectMembers.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithObjectMembers.2.minified.js
index cd13339d848b..042f5f22af7b 100644
--- a/crates/swc/tests/tsc-references/subtypingWithObjectMembers.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithObjectMembers.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithObjectMembers.ts]
+var TwoLevels;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+TwoLevels || (TwoLevels = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithObjectMembers5.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithObjectMembers5.2.minified.js
index 4771dcf43ac9..ac36468e9ad1 100644
--- a/crates/swc/tests/tsc-references/subtypingWithObjectMembers5.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithObjectMembers5.2.minified.js
@@ -1,2 +1,4 @@
 //// [subtypingWithObjectMembers5.ts]
+var NotOptional, Optional;
 import "@swc/helpers/_/_class_call_check";
+NotOptional || (NotOptional = {}), Optional || (Optional = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithObjectMembersAccessibility2.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithObjectMembersAccessibility2.2.minified.js
index 62393636e7df..7d6a1d4e2221 100644
--- a/crates/swc/tests/tsc-references/subtypingWithObjectMembersAccessibility2.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithObjectMembersAccessibility2.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithObjectMembersAccessibility2.ts]
+var ExplicitPublic, ImplicitPublic;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+ExplicitPublic || (ExplicitPublic = {}), ImplicitPublic || (ImplicitPublic = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithObjectMembersOptionality.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithObjectMembersOptionality.2.minified.js
index 5a3970c9695e..450a08812325 100644
--- a/crates/swc/tests/tsc-references/subtypingWithObjectMembersOptionality.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithObjectMembersOptionality.2.minified.js
@@ -1 +1,3 @@
 //// [subtypingWithObjectMembersOptionality.ts]
+var TwoLevels;
+TwoLevels || (TwoLevels = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithStringIndexer.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithStringIndexer.2.minified.js
index 688e933c1659..d85e256b1f8a 100644
--- a/crates/swc/tests/tsc-references/subtypingWithStringIndexer.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithStringIndexer.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithStringIndexer.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithStringIndexer3.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithStringIndexer3.2.minified.js
index 1dde63b45152..e553063ec44f 100644
--- a/crates/swc/tests/tsc-references/subtypingWithStringIndexer3.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithStringIndexer3.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithStringIndexer3.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/subtypingWithStringIndexer4.2.minified.js b/crates/swc/tests/tsc-references/subtypingWithStringIndexer4.2.minified.js
index 77a723dd966d..a7dee9ac8c87 100644
--- a/crates/swc/tests/tsc-references/subtypingWithStringIndexer4.2.minified.js
+++ b/crates/swc/tests/tsc-references/subtypingWithStringIndexer4.2.minified.js
@@ -1,4 +1,6 @@
 //// [subtypingWithStringIndexer4.ts]
+var Generics;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
+Generics || (Generics = {});
diff --git a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2015).2.minified.js b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2015).2.minified.js
index a1c4dc39e59b..a53654009d52 100644
--- a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2015).2.minified.js
+++ b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2015).2.minified.js
@@ -7,6 +7,7 @@ Baz || (Baz = {});
 export default class {
 }
 //// [locals.ts]
+let Reflect, Reflect1;
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
 class C extends B {
@@ -27,7 +28,7 @@ C._ = [
     })(),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
-    void _get(_get_prototype_of(C), "w", C).call(C),
+    void (Reflect || (Reflect = {}), _get(_get_prototype_of(C), "w", C).call(C)),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
@@ -43,7 +44,7 @@ C._ = [
         null
     ];
     _get(_get_prototype_of(C), "w", C).call(C);
-})(), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C);
+})(), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), Reflect1 || (Reflect1 = {}), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C);
 //// [varInContainingScopeStaticField1.ts]
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
@@ -129,14 +130,18 @@ class C extends B {
 }
 _get(_get_prototype_of(C), "w", C).call(C);
 //// [enumInContainingScopeStaticField.ts]
+var Reflect;
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
+Reflect || (Reflect = {});
 class C extends B {
 }
 C._ = _get(_get_prototype_of(C), "w", C).call(C);
 //// [enumInContainingScopeStaticBlock.ts]
+var Reflect;
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
+Reflect || (Reflect = {});
 class C extends B {
 }
 _get(_get_prototype_of(C), "w", C).call(C);
diff --git a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2021).2.minified.js b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2021).2.minified.js
index a1c4dc39e59b..a53654009d52 100644
--- a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2021).2.minified.js
+++ b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2021).2.minified.js
@@ -7,6 +7,7 @@ Baz || (Baz = {});
 export default class {
 }
 //// [locals.ts]
+let Reflect, Reflect1;
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
 class C extends B {
@@ -27,7 +28,7 @@ C._ = [
     })(),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
-    void _get(_get_prototype_of(C), "w", C).call(C),
+    void (Reflect || (Reflect = {}), _get(_get_prototype_of(C), "w", C).call(C)),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
@@ -43,7 +44,7 @@ C._ = [
         null
     ];
     _get(_get_prototype_of(C), "w", C).call(C);
-})(), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C);
+})(), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), Reflect1 || (Reflect1 = {}), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C);
 //// [varInContainingScopeStaticField1.ts]
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
@@ -129,14 +130,18 @@ class C extends B {
 }
 _get(_get_prototype_of(C), "w", C).call(C);
 //// [enumInContainingScopeStaticField.ts]
+var Reflect;
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
+Reflect || (Reflect = {});
 class C extends B {
 }
 C._ = _get(_get_prototype_of(C), "w", C).call(C);
 //// [enumInContainingScopeStaticBlock.ts]
+var Reflect;
 import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
+Reflect || (Reflect = {});
 class C extends B {
 }
 _get(_get_prototype_of(C), "w", C).call(C);
diff --git a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2022).2.minified.js b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2022).2.minified.js
index 4b64a734a262..a56d6182ef52 100644
--- a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2022).2.minified.js
+++ b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es2022).2.minified.js
@@ -9,6 +9,7 @@ export default class {
 //// [locals.ts]
 class C extends B {
     static{
+        let Reflect;
         this._ = [
             void super.w(),
             (()=>{
@@ -25,7 +26,7 @@ class C extends B {
             })(),
             void super.w(),
             void super.w(),
-            void super.w(),
+            void (Reflect || (Reflect = {}), super.w()),
             void super.w(),
             void super.w(),
             void super.w(),
@@ -55,7 +56,8 @@ class C extends B {
         super.w();
     }
     static{
-        super.w();
+        let Reflect;
+        Reflect || (Reflect = {}), super.w();
     }
     static{
         super.w();
@@ -171,6 +173,8 @@ class C extends B {
 }
 export { };
 //// [enumInContainingScopeStaticField.ts]
+var Reflect;
+Reflect || (Reflect = {});
 class C extends B {
     static{
         this._ = super.w();
@@ -178,6 +182,8 @@ class C extends B {
 }
 export { };
 //// [enumInContainingScopeStaticBlock.ts]
+var Reflect;
+Reflect || (Reflect = {});
 class C extends B {
     static{
         super.w();
diff --git a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es5).2.minified.js b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es5).2.minified.js
index 385fd8f8b05e..ca9405deac9b 100644
--- a/crates/swc/tests/tsc-references/superInStaticMembers1(target=es5).2.minified.js
+++ b/crates/swc/tests/tsc-references/superInStaticMembers1(target=es5).2.minified.js
@@ -16,7 +16,7 @@ import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var C = function(B1) {
+var Reflect, Reflect1, C = function(B1) {
     _inherits(C, B1);
     var _super = _create_super(C);
     function C() {
@@ -30,13 +30,13 @@ C._ = [
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
-    void _get(_get_prototype_of(C), "w", C).call(C),
+    void (Reflect || (Reflect = {}), _get(_get_prototype_of(C), "w", C).call(C)),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C),
     void _get(_get_prototype_of(C), "w", C).call(C)
-], _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C);
+], _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), Reflect1 || (Reflect1 = {}), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C), _get(_get_prototype_of(C), "w", C).call(C);
 //// [varInContainingScopeStaticField1.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _get } from "@swc/helpers/_/_get";
@@ -223,7 +223,8 @@ import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var C = function(B1) {
+Reflect || (Reflect = {});
+var Reflect, C = function(B1) {
     _inherits(C, B1);
     var _super = _create_super(C);
     function C() {
@@ -238,7 +239,8 @@ import { _ as _get } from "@swc/helpers/_/_get";
 import { _ as _get_prototype_of } from "@swc/helpers/_/_get_prototype_of";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-var C = function(B1) {
+Reflect || (Reflect = {});
+var Reflect, C = function(B1) {
     _inherits(C, B1);
     var _super = _create_super(C);
     function C() {
diff --git a/crates/swc/tests/tsc-references/superInStaticMembers1(target=esnext).2.minified.js b/crates/swc/tests/tsc-references/superInStaticMembers1(target=esnext).2.minified.js
index 4b64a734a262..a56d6182ef52 100644
--- a/crates/swc/tests/tsc-references/superInStaticMembers1(target=esnext).2.minified.js
+++ b/crates/swc/tests/tsc-references/superInStaticMembers1(target=esnext).2.minified.js
@@ -9,6 +9,7 @@ export default class {
 //// [locals.ts]
 class C extends B {
     static{
+        let Reflect;
         this._ = [
             void super.w(),
             (()=>{
@@ -25,7 +26,7 @@ class C extends B {
             })(),
             void super.w(),
             void super.w(),
-            void super.w(),
+            void (Reflect || (Reflect = {}), super.w()),
             void super.w(),
             void super.w(),
             void super.w(),
@@ -55,7 +56,8 @@ class C extends B {
         super.w();
     }
     static{
-        super.w();
+        let Reflect;
+        Reflect || (Reflect = {}), super.w();
     }
     static{
         super.w();
@@ -171,6 +173,8 @@ class C extends B {
 }
 export { };
 //// [enumInContainingScopeStaticField.ts]
+var Reflect;
+Reflect || (Reflect = {});
 class C extends B {
     static{
         this._ = super.w();
@@ -178,6 +182,8 @@ class C extends B {
 }
 export { };
 //// [enumInContainingScopeStaticBlock.ts]
+var Reflect;
+Reflect || (Reflect = {});
 class C extends B {
     static{
         super.w();
diff --git a/crates/swc/tests/tsc-references/switchStatements.2.minified.js b/crates/swc/tests/tsc-references/switchStatements.2.minified.js
index 22c241a911ef..fadae0d7d835 100644
--- a/crates/swc/tests/tsc-references/switchStatements.2.minified.js
+++ b/crates/swc/tests/tsc-references/switchStatements.2.minified.js
@@ -3,7 +3,7 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _type_of } from "@swc/helpers/_/_type_of";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
-switch((M = {}).fn = function(x) {
+switch((M || (M = {})).fn = function(x) {
     return '';
 }, x){
     case '':
diff --git a/crates/swc/tests/tsc-references/symbolDeclarationEmit12.2.minified.js b/crates/swc/tests/tsc-references/symbolDeclarationEmit12.2.minified.js
index 10ca4e9291b6..b2311b4ec98f 100644
--- a/crates/swc/tests/tsc-references/symbolDeclarationEmit12.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolDeclarationEmit12.2.minified.js
@@ -1,7 +1,7 @@
 //// [symbolDeclarationEmit12.ts]
-var M;
+var M, M1;
 let _Symbol_toPrimitive, _Symbol_isConcatSpreadable, _Symbol_toPrimitive1, _Symbol_toPrimitive2;
-M = {}, _Symbol_toPrimitive = Symbol.toPrimitive, _Symbol_isConcatSpreadable = Symbol.isConcatSpreadable, _Symbol_toPrimitive1 = Symbol.toPrimitive, _Symbol_toPrimitive2 = Symbol.toPrimitive, M.C = class {
+M1 = M || (M = {}), _Symbol_toPrimitive = Symbol.toPrimitive, _Symbol_isConcatSpreadable = Symbol.isConcatSpreadable, _Symbol_toPrimitive1 = Symbol.toPrimitive, _Symbol_toPrimitive2 = Symbol.toPrimitive, M1.C = class {
     [_Symbol_toPrimitive](x) {}
     [_Symbol_isConcatSpreadable]() {}
     get [_Symbol_toPrimitive1]() {}
diff --git a/crates/swc/tests/tsc-references/symbolProperty48.2.minified.js b/crates/swc/tests/tsc-references/symbolProperty48.2.minified.js
index d38670a1cd29..73e62cba371c 100644
--- a/crates/swc/tests/tsc-references/symbolProperty48.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolProperty48.2.minified.js
@@ -1,2 +1,3 @@
 //// [symbolProperty48.ts]
-(void 0).iterator;
+var M;
+M || (M = {}), (void 0).iterator;
diff --git a/crates/swc/tests/tsc-references/symbolProperty49.2.minified.js b/crates/swc/tests/tsc-references/symbolProperty49.2.minified.js
index d7af41151638..c6edd610a0ec 100644
--- a/crates/swc/tests/tsc-references/symbolProperty49.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolProperty49.2.minified.js
@@ -1,2 +1,3 @@
 //// [symbolProperty49.ts]
-({}).Symbol.iterator;
+var M;
+(M || (M = {})).Symbol.iterator;
diff --git a/crates/swc/tests/tsc-references/symbolProperty50.2.minified.js b/crates/swc/tests/tsc-references/symbolProperty50.2.minified.js
index 525e92a53151..e74322d4c151 100644
--- a/crates/swc/tests/tsc-references/symbolProperty50.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolProperty50.2.minified.js
@@ -1 +1,3 @@
 //// [symbolProperty50.ts]
+var M;
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/symbolProperty51.2.minified.js b/crates/swc/tests/tsc-references/symbolProperty51.2.minified.js
index efe3ba05d53d..c357cb50c288 100644
--- a/crates/swc/tests/tsc-references/symbolProperty51.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolProperty51.2.minified.js
@@ -1 +1,3 @@
 //// [symbolProperty51.ts]
+var M;
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/symbolProperty55.2.minified.js b/crates/swc/tests/tsc-references/symbolProperty55.2.minified.js
index a1f7cfb29565..456ed3dc17c4 100644
--- a/crates/swc/tests/tsc-references/symbolProperty55.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolProperty55.2.minified.js
@@ -1,2 +1,3 @@
 //// [symbolProperty55.ts]
-(void 0).iterator;
+var M;
+M || (M = {}), (void 0).iterator;
diff --git a/crates/swc/tests/tsc-references/symbolProperty56.2.minified.js b/crates/swc/tests/tsc-references/symbolProperty56.2.minified.js
index f784458a2b9a..23ecb7f95b72 100644
--- a/crates/swc/tests/tsc-references/symbolProperty56.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolProperty56.2.minified.js
@@ -1,2 +1,3 @@
 //// [symbolProperty56.ts]
-(void 0).iterator;
+var M;
+M || (M = {}), (void 0).iterator;
diff --git a/crates/swc/tests/tsc-references/symbolType19.2.minified.js b/crates/swc/tests/tsc-references/symbolType19.2.minified.js
index d4d6ec6a9e89..039f5ab7d4d2 100644
--- a/crates/swc/tests/tsc-references/symbolType19.2.minified.js
+++ b/crates/swc/tests/tsc-references/symbolType19.2.minified.js
@@ -1 +1,3 @@
 //// [symbolType19.ts]
+var E;
+E || (E = {});
diff --git a/crates/swc/tests/tsc-references/thisTypeErrors.2.minified.js b/crates/swc/tests/tsc-references/thisTypeErrors.2.minified.js
index 91b1dca579d3..07eee257cf2d 100644
--- a/crates/swc/tests/tsc-references/thisTypeErrors.2.minified.js
+++ b/crates/swc/tests/tsc-references/thisTypeErrors.2.minified.js
@@ -1,4 +1,5 @@
 //// [thisTypeErrors.ts]
+var N1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 (function() {
     function C2() {
@@ -7,4 +8,4 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
     return C2.foo = function(x) {}, C2;
 })().y = void 0, function(N1) {
     N1.y = this;
-}({});
+}(N1 || (N1 = {}));
diff --git a/crates/swc/tests/tsc-references/throwStatements.2.minified.js b/crates/swc/tests/tsc-references/throwStatements.2.minified.js
index 5d007a86f3e2..4bead994c000 100644
--- a/crates/swc/tests/tsc-references/throwStatements.2.minified.js
+++ b/crates/swc/tests/tsc-references/throwStatements.2.minified.js
@@ -1,9 +1,9 @@
 //// [throwStatements.ts]
-var M;
+var M, M1;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _type_of } from "@swc/helpers/_/_type_of";
-throw (M = {}).A = function A() {
+throw (M1 = M || (M = {})).A = function A() {
     _class_call_check(this, A);
-}, M.F2 = function(x) {
+}, M1.F2 = function(x) {
     return x.toString();
 }, 9.9;
diff --git a/crates/swc/tests/tsc-references/tsxElementResolution.2.minified.js b/crates/swc/tests/tsc-references/tsxElementResolution.2.minified.js
index c860c1cfeba8..3f6a50ffb39d 100644
--- a/crates/swc/tests/tsc-references/tsxElementResolution.2.minified.js
+++ b/crates/swc/tests/tsc-references/tsxElementResolution.2.minified.js
@@ -1,6 +1,6 @@
 //// [tsxElementResolution.tsx]
 var Dotted;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
-(Dotted = {}).Name = function Name() {
+(Dotted || (Dotted = {})).Name = function Name() {
     _class_call_check(this, Name);
 }, Dotted.Name;
diff --git a/crates/swc/tests/tsc-references/tsxElementResolution7.2.minified.js b/crates/swc/tests/tsc-references/tsxElementResolution7.2.minified.js
index d66d6d199e43..7a17146c7938 100644
--- a/crates/swc/tests/tsc-references/tsxElementResolution7.2.minified.js
+++ b/crates/swc/tests/tsc-references/tsxElementResolution7.2.minified.js
@@ -1,3 +1,3 @@
 //// [file.tsx]
-var my;
-(my = {}).div, my.other, my.div, my.non;
+var my, q, mine;
+my || (my = {}), my.div, my.other, q || (q = {}), (mine = my).div, mine.non;
diff --git a/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule.2.minified.js b/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule.2.minified.js
index 7cf25a32ff40..a457d9d93139 100644
--- a/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule.2.minified.js
+++ b/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule.2.minified.js
@@ -1,3 +1,3 @@
 //// [twoInterfacesDifferentRootModule.ts]
-var a, b;
-a.foo, a.bar, b.foo, b.bar;
+var M2, a, b;
+M2 || (M2 = {}), a.foo, a.bar, b.foo, b.bar;
diff --git a/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule2.2.minified.js b/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule2.2.minified.js
index c4c9c081d595..8106e5ea5500 100644
--- a/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule2.2.minified.js
+++ b/crates/swc/tests/tsc-references/twoInterfacesDifferentRootModule2.2.minified.js
@@ -1,3 +1,3 @@
 //// [twoInterfacesDifferentRootModule2.ts]
-var a, b, a1, b1;
-a1.foo, a1.bar, b1.foo, b1.bar, a.foo, a.bar, b.foo, b.bar;
+var M, M2, a, b, a1, b1;
+M || (M = {}), M2 || (M2 = {}), a1.foo, a1.bar, b1.foo, b1.bar, a.foo, a.bar, b.foo, b.bar;
diff --git a/crates/swc/tests/tsc-references/twoMergedInterfacesWithDifferingOverloads2.2.minified.js b/crates/swc/tests/tsc-references/twoMergedInterfacesWithDifferingOverloads2.2.minified.js
index c9a0422f0cb6..0498446137d9 100644
--- a/crates/swc/tests/tsc-references/twoMergedInterfacesWithDifferingOverloads2.2.minified.js
+++ b/crates/swc/tests/tsc-references/twoMergedInterfacesWithDifferingOverloads2.2.minified.js
@@ -1,3 +1,3 @@
 //// [twoMergedInterfacesWithDifferingOverloads2.ts]
-var a, a1;
-a(), a(1), a(1, 2), a1(), a1(!0), a1(!0, 2), a1(1, !0);
+var a, G, a1;
+a(), a(1), a(1, 2), G || (G = {}), a1(), a1(!0), a1(!0, 2), a1(1, !0);
diff --git a/crates/swc/tests/tsc-references/typeAliases.2.minified.js b/crates/swc/tests/tsc-references/typeAliases.2.minified.js
index 484d5488d17d..055083e87330 100644
--- a/crates/swc/tests/tsc-references/typeAliases.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeAliases.2.minified.js
@@ -1,7 +1,7 @@
 //// [typeAliases.ts]
-var E, x13_1, x13_2, x;
+var E, x13_1, x13_2, E1, x;
 import "@swc/helpers/_/_class_call_check";
-foo13(x13_1, x13_2), foo13(x13_2, x13_1), (E = {})[E.x = 10] = "x", f15(10).toLowerCase(), f16(x), [
+foo13(x13_1, x13_2), foo13(x13_2, x13_1), (E = E1 || (E1 = {}))[E.x = 10] = "x", f15(10).toLowerCase(), f16(x), [
     "1",
     !1
 ][0].toLowerCase();
diff --git a/crates/swc/tests/tsc-references/typeArgumentInferenceWithObjectLiteral.2.minified.js b/crates/swc/tests/tsc-references/typeArgumentInferenceWithObjectLiteral.2.minified.js
index cd9fff81c945..fcc041331963 100644
--- a/crates/swc/tests/tsc-references/typeArgumentInferenceWithObjectLiteral.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeArgumentInferenceWithObjectLiteral.2.minified.js
@@ -1,6 +1,6 @@
 //// [typeArgumentInferenceWithObjectLiteral.ts]
-var E1, E2;
-(E1 = {})[E1.X = 0] = "X", (E2 = {})[E2.X = 0] = "X", f1({
+var E1, E2, E11, E21;
+(E11 = E1 || (E1 = {}))[E11.X = 0] = "X", (E21 = E2 || (E2 = {}))[E21.X = 0] = "X", f1({
     w: function(x) {
         return x;
     },
diff --git a/crates/swc/tests/tsc-references/typeArgumentsWithStringLiteralTypes01.2.minified.js b/crates/swc/tests/tsc-references/typeArgumentsWithStringLiteralTypes01.2.minified.js
index a5c2b3248fd7..d475194c55d3 100644
--- a/crates/swc/tests/tsc-references/typeArgumentsWithStringLiteralTypes01.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeArgumentsWithStringLiteralTypes01.2.minified.js
@@ -1,5 +1,5 @@
 //// [typeArgumentsWithStringLiteralTypes01.ts]
-var n1, n2, n3;
+var n1, n2, n3, n11, n21, n31;
 function fun1(x, y) {
     return randBool() ? x : y;
 }
@@ -10,4 +10,4 @@ function fun3() {
     for(var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++)args[_key] = arguments[_key];
     return args[+randBool()];
 }
-(n1 = {}).a = fun1("Hello", "World"), n1.b = fun1("Hello", "Hello"), n1.c = fun2("Hello", "World"), n1.d = fun2("Hello", "Hello"), n1.e = fun3("Hello", "Hello", "World", "Foo"), n1.a = takeReturnString(n1.a), n1.b = takeReturnString(n1.b), n1.c = takeReturnString(n1.c), n1.d = takeReturnString(n1.d), n1.e = takeReturnString(n1.e), n1.a = takeReturnHello(n1.a), n1.b = takeReturnHello(n1.b), n1.c = takeReturnHello(n1.c), n1.d = takeReturnHello(n1.d), n1.e = takeReturnHello(n1.e), n1.a = takeReturnHelloWorld(n1.a), n1.b = takeReturnHelloWorld(n1.b), n1.c = takeReturnHelloWorld(n1.c), n1.d = takeReturnHelloWorld(n1.d), n1.e = takeReturnHelloWorld(n1.e), (n2 = {}).a = fun1("Hello", "Hello"), n2.b = fun1("Hello", "World"), n2.c = fun2("Hello", "Hello"), n2.d = fun2("Hello", "World"), n2.e = fun3("Hello", "World"), n2.a = takeReturnString(n2.a), n2.b = takeReturnString(n2.b), n2.c = takeReturnString(n2.c), n2.d = takeReturnString(n2.d), n2.e = takeReturnString(n2.e), n2.a = takeReturnHello(n2.a), n2.b = takeReturnHello(n2.b), n2.c = takeReturnHello(n2.c), n2.d = takeReturnHello(n2.d), n2.e = takeReturnHello(n2.e), n2.a = takeReturnHelloWorld(n2.a), n2.b = takeReturnHelloWorld(n2.b), n2.c = takeReturnHelloWorld(n2.c), n2.d = takeReturnHelloWorld(n2.d), n2.e = takeReturnHelloWorld(n2.e), (n3 = {}).a = fun2("Hello", "World"), n3.b = fun2("World", "Hello"), n3.c = fun2("Hello", "Hello"), n3.d = fun2("World", "World"), n3.e = fun3("Hello", "World"), n3.a = takeReturnString(n3.a), n3.b = takeReturnString(n3.b), n3.c = takeReturnString(n3.c), n3.d = takeReturnString(n3.d), n3.e = takeReturnString(n3.e), n3.a = takeReturnHello(n3.a), n3.b = takeReturnHello(n3.b), n3.c = takeReturnHello(n3.c), n3.d = takeReturnHello(n3.d), n3.e = takeReturnHello(n3.e), n3.a = takeReturnHelloWorld(n3.a), n3.b = takeReturnHelloWorld(n3.b), n3.c = takeReturnHelloWorld(n3.c), n3.d = takeReturnHelloWorld(n3.d), n3.e = takeReturnHelloWorld(n3.e);
+(n11 = n1 || (n1 = {})).a = fun1("Hello", "World"), n11.b = fun1("Hello", "Hello"), n11.c = fun2("Hello", "World"), n11.d = fun2("Hello", "Hello"), n11.e = fun3("Hello", "Hello", "World", "Foo"), n11.a = takeReturnString(n11.a), n11.b = takeReturnString(n11.b), n11.c = takeReturnString(n11.c), n11.d = takeReturnString(n11.d), n11.e = takeReturnString(n11.e), n11.a = takeReturnHello(n11.a), n11.b = takeReturnHello(n11.b), n11.c = takeReturnHello(n11.c), n11.d = takeReturnHello(n11.d), n11.e = takeReturnHello(n11.e), n11.a = takeReturnHelloWorld(n11.a), n11.b = takeReturnHelloWorld(n11.b), n11.c = takeReturnHelloWorld(n11.c), n11.d = takeReturnHelloWorld(n11.d), n11.e = takeReturnHelloWorld(n11.e), (n21 = n2 || (n2 = {})).a = fun1("Hello", "Hello"), n21.b = fun1("Hello", "World"), n21.c = fun2("Hello", "Hello"), n21.d = fun2("Hello", "World"), n21.e = fun3("Hello", "World"), n21.a = takeReturnString(n21.a), n21.b = takeReturnString(n21.b), n21.c = takeReturnString(n21.c), n21.d = takeReturnString(n21.d), n21.e = takeReturnString(n21.e), n21.a = takeReturnHello(n21.a), n21.b = takeReturnHello(n21.b), n21.c = takeReturnHello(n21.c), n21.d = takeReturnHello(n21.d), n21.e = takeReturnHello(n21.e), n21.a = takeReturnHelloWorld(n21.a), n21.b = takeReturnHelloWorld(n21.b), n21.c = takeReturnHelloWorld(n21.c), n21.d = takeReturnHelloWorld(n21.d), n21.e = takeReturnHelloWorld(n21.e), (n31 = n3 || (n3 = {})).a = fun2("Hello", "World"), n31.b = fun2("World", "Hello"), n31.c = fun2("Hello", "Hello"), n31.d = fun2("World", "World"), n31.e = fun3("Hello", "World"), n31.a = takeReturnString(n31.a), n31.b = takeReturnString(n31.b), n31.c = takeReturnString(n31.c), n31.d = takeReturnString(n31.d), n31.e = takeReturnString(n31.e), n31.a = takeReturnHello(n31.a), n31.b = takeReturnHello(n31.b), n31.c = takeReturnHello(n31.c), n31.d = takeReturnHello(n31.d), n31.e = takeReturnHello(n31.e), n31.a = takeReturnHelloWorld(n31.a), n31.b = takeReturnHelloWorld(n31.b), n31.c = takeReturnHelloWorld(n31.c), n31.d = takeReturnHelloWorld(n31.d), n31.e = takeReturnHelloWorld(n31.e);
diff --git a/crates/swc/tests/tsc-references/typeFromPropertyAssignment29.2.minified.js b/crates/swc/tests/tsc-references/typeFromPropertyAssignment29.2.minified.js
index 5fbadc51361a..f4e5aacbe7e7 100644
--- a/crates/swc/tests/tsc-references/typeFromPropertyAssignment29.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeFromPropertyAssignment29.2.minified.js
@@ -6,7 +6,7 @@ function ExpandoDecl(n) {
 ExpandoDecl.prop = 2, ExpandoDecl.m = function(n) {
     return n + 1;
 }, ExpandoDecl.prop, ExpandoDecl.m(12), ExpandoDecl(101).length;
-var ExpandoExpr = function(n) {
+var Ns, ExpandoExpr = function(n) {
     return n.toString();
 };
 ExpandoExpr.prop = {
@@ -29,7 +29,7 @@ ExpandoArrow.prop = 2, ExpandoArrow.m = function(n) {
     ExpandoNamespace.p6 = 42, Ns.foo = function() {
         return ExpandoNamespace;
     };
-}({});
+}(Ns || (Ns = {}));
 var ExpandoExpr2 = function(n) {
     return n.toString();
 };
diff --git a/crates/swc/tests/tsc-references/typeGuardEnums.2.minified.js b/crates/swc/tests/tsc-references/typeGuardEnums.2.minified.js
index 63fb6dbbfe18..0601614dcf09 100644
--- a/crates/swc/tests/tsc-references/typeGuardEnums.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeGuardEnums.2.minified.js
@@ -1 +1,3 @@
 //// [typeGuardEnums.ts]
+var E, V;
+E || (E = {}), V || (V = {});
diff --git a/crates/swc/tests/tsc-references/typeGuardsInFunctionAndModuleBlock.2.minified.js b/crates/swc/tests/tsc-references/typeGuardsInFunctionAndModuleBlock.2.minified.js
index ca7a86f88009..acca28808518 100644
--- a/crates/swc/tests/tsc-references/typeGuardsInFunctionAndModuleBlock.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeGuardsInFunctionAndModuleBlock.2.minified.js
@@ -1,3 +1,3 @@
 //// [typeGuardsInFunctionAndModuleBlock.ts]
-var x, x1, m2;
-"string" == typeof x || x.toString(), (m2 = {}).m3 || (m2.m3 = {}), "string" == typeof x1 || x1.toString();
+var m, m1, x, m2, x1, m21, m22;
+m || (m = {}), m2 || (m2 = {}), "string" == typeof x || x.toString(), m1 || (m1 = {}), (m22 = m21 || (m21 = {})).m3 || (m22.m3 = {}), "string" == typeof x1 || x1.toString();
diff --git a/crates/swc/tests/tsc-references/typeGuardsInModule.2.minified.js b/crates/swc/tests/tsc-references/typeGuardsInModule.2.minified.js
index b57cc89fe445..2e05cb6e9329 100644
--- a/crates/swc/tests/tsc-references/typeGuardsInModule.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeGuardsInModule.2.minified.js
@@ -1,3 +1,3 @@
 //// [typeGuardsInModule.ts]
-var var1, m1, var2, m2, var21, m3, var4, m31, m4, var22;
-m1 = {}, "string" == typeof var1 && var1.length, "string" == typeof var2 && var2.length, m1.var3, m1.var3, m2 = {}, m3 = {}, "string" == typeof var1 && var1.length, "string" == typeof var21 && var21.length, "string" == typeof m2.var3 && m2.var3, "string" == typeof var4 && var4.length, m3.var5, m3.var5, m4 = (m31 = {}).m4 || (m31.m4 = {}), "string" == typeof var1 && var1.length, "string" == typeof var22 && var22.length, m4.var3, m4.var3;
+var var1, m1, m2, m3, m11, var2, m21, var21, m31, m32, var4, m33, m4, var22;
+m11 = m1 || (m1 = {}), "string" == typeof var1 && var1.length, "string" == typeof var2 && var2.length, m11.var3, m11.var3, m21 = m2 || (m2 = {}), m32 = m31 || (m31 = {}), "string" == typeof var1 && var1.length, "string" == typeof var21 && var21.length, "string" == typeof m21.var3 && m21.var3, "string" == typeof var4 && var4.length, m32.var5, m32.var5, m4 = (m33 = m3 || (m3 = {})).m4 || (m33.m4 = {}), "string" == typeof var1 && var1.length, "string" == typeof var22 && var22.length, m4.var3, m4.var3;
diff --git a/crates/swc/tests/tsc-references/typeOfThisInFunctionExpression.2.minified.js b/crates/swc/tests/tsc-references/typeOfThisInFunctionExpression.2.minified.js
index bc39d618a9b9..6fb3c7dd3ca3 100644
--- a/crates/swc/tests/tsc-references/typeOfThisInFunctionExpression.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeOfThisInFunctionExpression.2.minified.js
@@ -1,2 +1,4 @@
 //// [typeOfThisInFunctionExpression.ts]
+var M;
 import "@swc/helpers/_/_class_call_check";
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/typeOnlyMerge3.2.minified.js b/crates/swc/tests/tsc-references/typeOnlyMerge3.2.minified.js
index f4cacba62ff0..f0b10e19c5f0 100644
--- a/crates/swc/tests/tsc-references/typeOnlyMerge3.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeOnlyMerge3.2.minified.js
@@ -2,7 +2,7 @@
 export { };
 //// [b.ts]
 var A;
-(A = {}).displayName = "A";
+(A || (A = {})).displayName = "A";
 export { A };
 //// [c.ts]
 import { A } from "./b";
diff --git a/crates/swc/tests/tsc-references/typeofANonExportedType.2.minified.js b/crates/swc/tests/tsc-references/typeofANonExportedType.2.minified.js
index 2120b59399f2..7ec1a792dc65 100644
--- a/crates/swc/tests/tsc-references/typeofANonExportedType.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofANonExportedType.2.minified.js
@@ -1,5 +1,5 @@
 //// [typeofANonExportedType.ts]
-var M, E, foo;
+var M, E, M1, E1, foo;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 export var r1;
 export var r2;
@@ -10,14 +10,14 @@ export var r4b;
 export var i;
 export var r5;
 export var r5;
-(M = {}).foo = '', M.C = function C() {
+(M1 = M || (M = {})).foo = '', M1.C = function C() {
     _class_call_check(this, C);
 };
 export var r6;
 export var r7;
 export var r8;
 export var r9;
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
 export var r10;
 export var r11;
 export var r12;
diff --git a/crates/swc/tests/tsc-references/typeofModuleWithoutExports.2.minified.js b/crates/swc/tests/tsc-references/typeofModuleWithoutExports.2.minified.js
index 172909efbcdb..8c2b0d51eeb9 100644
--- a/crates/swc/tests/tsc-references/typeofModuleWithoutExports.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofModuleWithoutExports.2.minified.js
@@ -1,2 +1,4 @@
 //// [typeofModuleWithoutExports.ts]
+var M;
 import "@swc/helpers/_/_class_call_check";
+M || (M = {});
diff --git a/crates/swc/tests/tsc-references/typeofOperatorWithAnyOtherType.2.minified.js b/crates/swc/tests/tsc-references/typeofOperatorWithAnyOtherType.2.minified.js
index 8640f5670ea7..2cd961a5418c 100644
--- a/crates/swc/tests/tsc-references/typeofOperatorWithAnyOtherType.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofOperatorWithAnyOtherType.2.minified.js
@@ -15,6 +15,6 @@ var A = function() {
     }
     return A.foo = function() {}, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 void 0 === ANY1 || _type_of(ANY1), _type_of(ANY2), void 0 === A || _type_of(A), void 0 === M || _type_of(M), void 0 === obj || _type_of(obj), _type_of(obj1), _type_of(null), _type_of({}), _type_of(ANY2[0]), _type_of(objA.a), _type_of(obj1.x), _type_of(M.n), _type_of(foo()), _type_of(A.foo()), _type_of(ANY + ANY1), _type_of(NaN), _type_of(0), _type_of(NaN), _type_of(void 0 === ANY ? "undefined" : _type_of(ANY)), _type_of(_type_of(_type_of(ANY + ANY1))), void 0 === ANY || _type_of(ANY), void 0 === ANY1 || _type_of(ANY1), _type_of(ANY2[0]), void 0 === ANY || _type_of(ANY), _type_of(obj1), _type_of(obj1.x), _type_of(objA.a), _type_of(M.n), void 0 === ANY || _type_of(ANY), _type_of(ANY2), _type_of(foo), _type_of(objA.a), _type_of(A.foo), _type_of(M.n), _type_of(obj1.x);
diff --git a/crates/swc/tests/tsc-references/typeofOperatorWithBooleanType.2.minified.js b/crates/swc/tests/tsc-references/typeofOperatorWithBooleanType.2.minified.js
index 7e708edfc6c1..db4343f0b94a 100644
--- a/crates/swc/tests/tsc-references/typeofOperatorWithBooleanType.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofOperatorWithBooleanType.2.minified.js
@@ -12,7 +12,7 @@ var BOOLEAN, M, A = function() {
         return !1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 void 0 === BOOLEAN || _type_of(BOOLEAN), _type_of(!0), _type_of({
     x: !0,
diff --git a/crates/swc/tests/tsc-references/typeofOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/typeofOperatorWithEnumType.2.minified.js
index 7d9809860950..78589c32c5a0 100644
--- a/crates/swc/tests/tsc-references/typeofOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofOperatorWithEnumType.2.minified.js
@@ -1,4 +1,4 @@
 //// [typeofOperatorWithEnumType.ts]
-var ENUM, ENUM1, ENUM11;
+var ENUM, ENUM1, z, ENUM11;
 import { _ as _type_of } from "@swc/helpers/_/_type_of";
-ENUM = {}, (ENUM11 = ENUM1 = {})[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", void 0 === ENUM || _type_of(ENUM), void 0 === ENUM1 || _type_of(ENUM1), _type_of(0), _type_of(ENUM[0] + 1), _type_of(void 0 === ENUM ? "undefined" : _type_of(ENUM)), _type_of(_type_of(_type_of(ENUM[0] + 1))), void 0 === ENUM || _type_of(ENUM), void 0 === ENUM1 || _type_of(ENUM1), _type_of(1), void 0 === ENUM || _type_of(ENUM), void 0 === ENUM || _type_of(ENUM), void 0 === ENUM1 || _type_of(ENUM1);
+ENUM || (ENUM = {}), (ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", void 0 === ENUM || _type_of(ENUM), void 0 === ENUM1 || _type_of(ENUM1), _type_of(0), _type_of(ENUM[0] + 1), _type_of(void 0 === ENUM ? "undefined" : _type_of(ENUM)), _type_of(_type_of(_type_of(ENUM[0] + 1))), void 0 === ENUM || _type_of(ENUM), void 0 === ENUM1 || _type_of(ENUM1), _type_of(1), void 0 === ENUM || _type_of(ENUM), z || (z = {}), void 0 === ENUM || _type_of(ENUM), void 0 === ENUM1 || _type_of(ENUM1);
diff --git a/crates/swc/tests/tsc-references/typeofOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/typeofOperatorWithNumberType.2.minified.js
index 05e0b1e535df..805b5af251c0 100644
--- a/crates/swc/tests/tsc-references/typeofOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofOperatorWithNumberType.2.minified.js
@@ -16,7 +16,7 @@ var A = function() {
         return 1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 void 0 === NUMBER || _type_of(NUMBER), _type_of(NUMBER1), _type_of(1), _type_of({
     x: 1,
diff --git a/crates/swc/tests/tsc-references/typeofOperatorWithStringType.2.minified.js b/crates/swc/tests/tsc-references/typeofOperatorWithStringType.2.minified.js
index f83ddf2519b5..88de2adc2560 100644
--- a/crates/swc/tests/tsc-references/typeofOperatorWithStringType.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofOperatorWithStringType.2.minified.js
@@ -16,7 +16,7 @@ var A = function() {
         return "";
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 void 0 === STRING || _type_of(STRING), _type_of(STRING1), _type_of(""), _type_of({
     x: "",
diff --git a/crates/swc/tests/tsc-references/typeofThis.2.minified.js b/crates/swc/tests/tsc-references/typeofThis.2.minified.js
index c58f2ffabd05..c365f6faa278 100644
--- a/crates/swc/tests/tsc-references/typeofThis.2.minified.js
+++ b/crates/swc/tests/tsc-references/typeofThis.2.minified.js
@@ -1,3 +1,5 @@
 //// [typeofThis.ts]
+var Test6, Test7;
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _instanceof } from "@swc/helpers/_/_instanceof";
+(Test6 || (Test6 = {})).f = function() {}, (Test7 || (Test7 = {})).f = function() {};
diff --git a/crates/swc/tests/tsc-references/undefinedAssignableToEveryType.2.minified.js b/crates/swc/tests/tsc-references/undefinedAssignableToEveryType.2.minified.js
index 04affcdb40df..b7076fb6e30a 100644
--- a/crates/swc/tests/tsc-references/undefinedAssignableToEveryType.2.minified.js
+++ b/crates/swc/tests/tsc-references/undefinedAssignableToEveryType.2.minified.js
@@ -1,4 +1,4 @@
 //// [undefinedAssignableToEveryType.ts]
-var E;
+var E, E1;
 import "@swc/helpers/_/_class_call_check";
-(E = {})[E.A = 0] = "A";
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/undefinedIsSubtypeOfEverything.2.minified.js b/crates/swc/tests/tsc-references/undefinedIsSubtypeOfEverything.2.minified.js
index 782c9189d3e1..9a0f697d0987 100644
--- a/crates/swc/tests/tsc-references/undefinedIsSubtypeOfEverything.2.minified.js
+++ b/crates/swc/tests/tsc-references/undefinedIsSubtypeOfEverything.2.minified.js
@@ -3,8 +3,8 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _inherits } from "@swc/helpers/_/_inherits";
 import { _ as _create_super } from "@swc/helpers/_/_create_super";
 function f() {}
-(E = {})[E.A = 0] = "A", (f || (f = {})).bar = 1;
-var E, c = function c() {
+(E1 = E || (E = {}))[E1.A = 0] = "A", (f || (f = {})).bar = 1;
+var E, E1, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/unionSubtypeIfEveryConstituentTypeIsSubtype.2.minified.js b/crates/swc/tests/tsc-references/unionSubtypeIfEveryConstituentTypeIsSubtype.2.minified.js
index 6d4c657fe0ce..7d9661d8d94b 100644
--- a/crates/swc/tests/tsc-references/unionSubtypeIfEveryConstituentTypeIsSubtype.2.minified.js
+++ b/crates/swc/tests/tsc-references/unionSubtypeIfEveryConstituentTypeIsSubtype.2.minified.js
@@ -1,8 +1,8 @@
 //// [unionSubtypeIfEveryConstituentTypeIsSubtype.ts]
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 function f() {}
-(e = {})[e.e1 = 0] = "e1", e[e.e2 = 1] = "e2", (E2 = {})[E2.A = 0] = "A", (f || (f = {})).bar = 1;
-var e, E2, c = function c() {
+(e = e1 || (e1 = {}))[e.e1 = 0] = "e1", e[e.e2 = 1] = "e2", (E2 = E21 || (E21 = {}))[E2.A = 0] = "A", (f || (f = {})).bar = 1;
+var e, E2, e1, E21, c = function c() {
     _class_call_check(this, c);
 };
 (c || (c = {})).bar = 1;
diff --git a/crates/swc/tests/tsc-references/unknownType2.2.minified.js b/crates/swc/tests/tsc-references/unknownType2.2.minified.js
index 192eea1354f7..fee503939e9e 100644
--- a/crates/swc/tests/tsc-references/unknownType2.2.minified.js
+++ b/crates/swc/tests/tsc-references/unknownType2.2.minified.js
@@ -1,3 +1,3 @@
 //// [unknownType2.ts]
-var NumberEnum, StringEnum, u = void 0;
-5 === u && u.toString(10), symb, aString, aBoolean, aNumber, anObject, anObjectLiteral, aUnion, anIntersection, aFunction, (NumberEnum = {})[NumberEnum.A = 0] = "A", NumberEnum[NumberEnum.B = 1] = "B", NumberEnum[NumberEnum.C = 2] = "C", (StringEnum = {}).A = "A", StringEnum.B = "B", StringEnum.C = "C";
+var NumberEnum, StringEnum, NumberEnum1, StringEnum1, u = void 0;
+5 === u && u.toString(10), symb, aString, aBoolean, aNumber, anObject, anObjectLiteral, aUnion, anIntersection, aFunction, (NumberEnum = NumberEnum1 || (NumberEnum1 = {}))[NumberEnum.A = 0] = "A", NumberEnum[NumberEnum.B = 1] = "B", NumberEnum[NumberEnum.C = 2] = "C", (StringEnum = StringEnum1 || (StringEnum1 = {})).A = "A", StringEnum.B = "B", StringEnum.C = "C";
diff --git a/crates/swc/tests/tsc-references/useObjectValuesAndEntries1.2.minified.js b/crates/swc/tests/tsc-references/useObjectValuesAndEntries1.2.minified.js
index 3a50f3171028..6715793fd342 100644
--- a/crates/swc/tests/tsc-references/useObjectValuesAndEntries1.2.minified.js
+++ b/crates/swc/tests/tsc-references/useObjectValuesAndEntries1.2.minified.js
@@ -26,6 +26,6 @@ var a = [
     "b",
     "c"
 ];
-Object.entries(a), Object.values(a), (E = E1 = {})[E.A = 0] = "A", E[E.B = 1] = "B", Object.entries(E1), Object.values(E1);
+Object.entries(a), Object.values(a), (E = E1 || (E1 = {}))[E.A = 0] = "A", E[E.B = 1] = "B", Object.entries(E1), Object.values(E1);
 var i = {};
 Object.entries(i), Object.values(i);
diff --git a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2015).2.minified.js b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2015).2.minified.js
index e665790d2bac..0935feef1992 100644
--- a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2015).2.minified.js
+++ b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2015).2.minified.js
@@ -4,7 +4,7 @@ import "@swc/helpers/_/_await_async_generator";
 import "@swc/helpers/_/_wrap_async_generator";
 import { _ as _using_ctx } from "@swc/helpers/_/_using_ctx";
 try {
-    var _usingCtx = _using_ctx();
+    var N, _usingCtx = _using_ctx();
     _usingCtx.u({
         [Symbol.dispose] () {}
     }), (()=>{
@@ -29,7 +29,7 @@ try {
         } finally{
             _usingCtx.d();
         }
-    }(0);
+    }(N || (N = {}));
     try {
         var _usingCtx1 = _using_ctx();
         _usingCtx1.u({
diff --git a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2017).2.minified.js b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2017).2.minified.js
index 3dd7b78fe9a4..1a1a2e70b216 100644
--- a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2017).2.minified.js
+++ b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2017).2.minified.js
@@ -1,7 +1,7 @@
 //// [usingDeclarations.1.ts]
 import { _ as _using_ctx } from "@swc/helpers/_/_using_ctx";
 try {
-    var _usingCtx = _using_ctx();
+    var N, _usingCtx = _using_ctx();
     _usingCtx.u({
         [Symbol.dispose] () {}
     }), (()=>{
@@ -26,7 +26,7 @@ try {
         } finally{
             _usingCtx.d();
         }
-    }(0);
+    }(N || (N = {}));
     try {
         var _usingCtx1 = _using_ctx();
         _usingCtx1.u({
diff --git a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2022).2.minified.js b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2022).2.minified.js
index a252a8cb4fc3..c757c3f676a5 100644
--- a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2022).2.minified.js
+++ b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es2022).2.minified.js
@@ -1,7 +1,7 @@
 //// [usingDeclarations.1.ts]
 import { _ as _using_ctx } from "@swc/helpers/_/_using_ctx";
 try {
-    var _usingCtx = _using_ctx();
+    var N, _usingCtx = _using_ctx();
     _usingCtx.u({
         [Symbol.dispose] () {}
     });
@@ -126,7 +126,7 @@ try {
         } finally{
             _usingCtx.d();
         }
-    }(0);
+    }(N || (N = {}));
     try {
         var _usingCtx1 = _using_ctx();
         _usingCtx1.u({
diff --git a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es5).2.minified.js b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es5).2.minified.js
index de10e1f5610b..445a366d3e2c 100644
--- a/crates/swc/tests/tsc-references/usingDeclarations.1(target=es5).2.minified.js
+++ b/crates/swc/tests/tsc-references/usingDeclarations.1(target=es5).2.minified.js
@@ -11,7 +11,7 @@ import { _ as _create_super } from "@swc/helpers/_/_create_super";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
 import { _ as _using_ctx } from "@swc/helpers/_/_using_ctx";
 try {
-    var _usingCtx = _using_ctx();
+    var N, _usingCtx = _using_ctx();
     _usingCtx.u(_define_property({}, Symbol.dispose, function() {})), function() {
         try {
             var _usingCtx = _using_ctx();
@@ -30,7 +30,7 @@ try {
         } finally{
             _usingCtx.d();
         }
-    }(0);
+    }(N || (N = {}));
     try {
         var _usingCtx1 = _using_ctx();
         _usingCtx1.u(_define_property({}, Symbol.dispose, function() {}));
diff --git a/crates/swc/tests/tsc-references/usingDeclarations.1(target=esnext).2.minified.js b/crates/swc/tests/tsc-references/usingDeclarations.1(target=esnext).2.minified.js
index a252a8cb4fc3..c757c3f676a5 100644
--- a/crates/swc/tests/tsc-references/usingDeclarations.1(target=esnext).2.minified.js
+++ b/crates/swc/tests/tsc-references/usingDeclarations.1(target=esnext).2.minified.js
@@ -1,7 +1,7 @@
 //// [usingDeclarations.1.ts]
 import { _ as _using_ctx } from "@swc/helpers/_/_using_ctx";
 try {
-    var _usingCtx = _using_ctx();
+    var N, _usingCtx = _using_ctx();
     _usingCtx.u({
         [Symbol.dispose] () {}
     });
@@ -126,7 +126,7 @@ try {
         } finally{
             _usingCtx.d();
         }
-    }(0);
+    }(N || (N = {}));
     try {
         var _usingCtx1 = _using_ctx();
         _usingCtx1.u({
diff --git a/crates/swc/tests/tsc-references/validEnumAssignments.2.minified.js b/crates/swc/tests/tsc-references/validEnumAssignments.2.minified.js
index 8afca471f322..49e6e4d2b179 100644
--- a/crates/swc/tests/tsc-references/validEnumAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/validEnumAssignments.2.minified.js
@@ -1,3 +1,3 @@
 //// [validEnumAssignments.ts]
-var E;
-(E = {})[E.A = 0] = "A", E[E.B = 1] = "B";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 0] = "A", E1[E1.B = 1] = "B";
diff --git a/crates/swc/tests/tsc-references/validNullAssignments.2.minified.js b/crates/swc/tests/tsc-references/validNullAssignments.2.minified.js
index 17f0a7b03d49..ddd5334acc1c 100644
--- a/crates/swc/tests/tsc-references/validNullAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/validNullAssignments.2.minified.js
@@ -1,4 +1,4 @@
 //// [validNullAssignments.ts]
-var E, E1;
+var E, M, E1;
 import "@swc/helpers/_/_class_call_check";
-(E1 = E = {})[E1.A = 0] = "A", E.A = null, I = null;
+(E1 = E || (E = {}))[E1.A = 0] = "A", E.A = null, I = null, (M || (M = {})).x = 1;
diff --git a/crates/swc/tests/tsc-references/validNumberAssignments.2.minified.js b/crates/swc/tests/tsc-references/validNumberAssignments.2.minified.js
index 985459d0abcd..42573de5501e 100644
--- a/crates/swc/tests/tsc-references/validNumberAssignments.2.minified.js
+++ b/crates/swc/tests/tsc-references/validNumberAssignments.2.minified.js
@@ -1,3 +1,3 @@
 //// [validNumberAssignments.ts]
-var E;
-(E = {})[E.A = 0] = "A";
+var E, E1;
+(E1 = E || (E = {}))[E1.A = 0] = "A";
diff --git a/crates/swc/tests/tsc-references/valuesMergingAcrossModules.2.minified.js b/crates/swc/tests/tsc-references/valuesMergingAcrossModules.2.minified.js
index 28b6de091f29..9e635867dac5 100644
--- a/crates/swc/tests/tsc-references/valuesMergingAcrossModules.2.minified.js
+++ b/crates/swc/tests/tsc-references/valuesMergingAcrossModules.2.minified.js
@@ -5,5 +5,5 @@ export { A };
 import "./a";
 //// [c.ts]
 var A;
-(A = {}).displayName = "A", A(), A.displayName;
+(A || (A = {})).displayName = "A", A(), A.displayName;
 export { };
diff --git a/crates/swc/tests/tsc-references/verbatimModuleSyntaxInternalImportEquals.2.minified.js b/crates/swc/tests/tsc-references/verbatimModuleSyntaxInternalImportEquals.2.minified.js
index 0734c1e277d3..40fde832d6b9 100644
--- a/crates/swc/tests/tsc-references/verbatimModuleSyntaxInternalImportEquals.2.minified.js
+++ b/crates/swc/tests/tsc-references/verbatimModuleSyntaxInternalImportEquals.2.minified.js
@@ -1,4 +1,4 @@
 //// [verbatimModuleSyntaxInternalImportEquals.ts]
 var Foo;
-NonExistent, (Foo = {}).foo = 1, Foo.foo, Foo.T;
+NonExistent, (Foo || (Foo = {})).foo = 1, Foo.foo, Foo.T;
 export { };
diff --git a/crates/swc/tests/tsc-references/verbatimModuleSyntaxNoElisionCJS.2.minified.js b/crates/swc/tests/tsc-references/verbatimModuleSyntaxNoElisionCJS.2.minified.js
index 557b12383ff2..30ffff01e7b5 100644
--- a/crates/swc/tests/tsc-references/verbatimModuleSyntaxNoElisionCJS.2.minified.js
+++ b/crates/swc/tests/tsc-references/verbatimModuleSyntaxNoElisionCJS.2.minified.js
@@ -7,7 +7,7 @@ Object.defineProperty(exports, "__esModule", {
 }), require("./a");
 //// [/c.ts]
 var I;
-(I = {}).x = 1, module.exports = I;
+(I || (I = {})).x = 1, module.exports = I;
 //// [/d.ts]
 require("./c"), module.exports = J;
 //// [/e.d.ts]
diff --git a/crates/swc/tests/tsc-references/verbatimModuleSyntaxRestrictionsCJS.2.minified.js b/crates/swc/tests/tsc-references/verbatimModuleSyntaxRestrictionsCJS.2.minified.js
index 68fb3dfa4384..9577bbba4a26 100644
--- a/crates/swc/tests/tsc-references/verbatimModuleSyntaxRestrictionsCJS.2.minified.js
+++ b/crates/swc/tests/tsc-references/verbatimModuleSyntaxRestrictionsCJS.2.minified.js
@@ -30,14 +30,14 @@ Object.defineProperty(exports, "__esModule", {
 const _interop_require_wildcard = require("@swc/helpers/_/_interop_require_wildcard");
 require("./decl"), Promise.resolve().then(()=>_interop_require_wildcard._(require("./decl")));
 const x = 1;
-(Values = {}).x = 1;
+(Values || (Values = {})).x = 1;
 //// [/main2.ts]
 module.exports = {
     x: 1
 };
 //// [/main3.ts]
 var ns;
-(ns = {}).x = 1, module.exports = ns;
+(ns || (ns = {})).x = 1, module.exports = ns;
 //// [/main4.ts]
 Object.defineProperty(exports, "__esModule", {
     value: !0
diff --git a/crates/swc/tests/tsc-references/voidOperatorWithAnyOtherType.2.minified.js b/crates/swc/tests/tsc-references/voidOperatorWithAnyOtherType.2.minified.js
index 2144034780d4..12bc3a6fc2f2 100644
--- a/crates/swc/tests/tsc-references/voidOperatorWithAnyOtherType.2.minified.js
+++ b/crates/swc/tests/tsc-references/voidOperatorWithAnyOtherType.2.minified.js
@@ -6,6 +6,6 @@ var M, A = function() {
     }
     return A.foo = function() {}, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/voidOperatorWithBooleanType.2.minified.js b/crates/swc/tests/tsc-references/voidOperatorWithBooleanType.2.minified.js
index 31592243bf19..33f8ac635780 100644
--- a/crates/swc/tests/tsc-references/voidOperatorWithBooleanType.2.minified.js
+++ b/crates/swc/tests/tsc-references/voidOperatorWithBooleanType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return !1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/voidOperatorWithEnumType.2.minified.js b/crates/swc/tests/tsc-references/voidOperatorWithEnumType.2.minified.js
index 86855a256791..1b2a7a18bc80 100644
--- a/crates/swc/tests/tsc-references/voidOperatorWithEnumType.2.minified.js
+++ b/crates/swc/tests/tsc-references/voidOperatorWithEnumType.2.minified.js
@@ -1,3 +1,3 @@
 //// [voidOperatorWithEnumType.ts]
-var ENUM, ENUM1;
-ENUM = {}, (ENUM1 = {})[ENUM1.A = 0] = "A", ENUM1[ENUM1.B = 1] = "B", ENUM1[ENUM1[""] = 2] = "", ENUM[0], ENUM[0];
+var ENUM, ENUM1, ENUM11;
+ENUM || (ENUM = {}), (ENUM11 = ENUM1 || (ENUM1 = {}))[ENUM11.A = 0] = "A", ENUM11[ENUM11.B = 1] = "B", ENUM11[ENUM11[""] = 2] = "", ENUM[0], ENUM[0];
diff --git a/crates/swc/tests/tsc-references/voidOperatorWithNumberType.2.minified.js b/crates/swc/tests/tsc-references/voidOperatorWithNumberType.2.minified.js
index cba77af5df93..d0749da266b9 100644
--- a/crates/swc/tests/tsc-references/voidOperatorWithNumberType.2.minified.js
+++ b/crates/swc/tests/tsc-references/voidOperatorWithNumberType.2.minified.js
@@ -8,6 +8,6 @@ var M, A = function() {
         return 1;
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), objA.a, M.n, objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/voidOperatorWithStringType.2.minified.js b/crates/swc/tests/tsc-references/voidOperatorWithStringType.2.minified.js
index 0907ebc10053..8b924ca335e7 100644
--- a/crates/swc/tests/tsc-references/voidOperatorWithStringType.2.minified.js
+++ b/crates/swc/tests/tsc-references/voidOperatorWithStringType.2.minified.js
@@ -8,6 +8,6 @@ var STRING, M, A = function() {
         return "";
     }, A;
 }();
-M = {};
+M || (M = {});
 var objA = new A();
 objA.a, M.n, A.foo(), STRING.charAt(0), objA.a, M.n;
diff --git a/crates/swc/tests/tsc-references/witness.2.minified.js b/crates/swc/tests/tsc-references/witness.2.minified.js
index 7b1bb90865fb..8edb5393c970 100644
--- a/crates/swc/tests/tsc-references/witness.2.minified.js
+++ b/crates/swc/tests/tsc-references/witness.2.minified.js
@@ -9,10 +9,10 @@ import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 }(), function fn5() {
     return new (void 0)(fn5);
 }();
-var propAcc1, M2, propAcc1 = {
+var propAcc1, M2, M21, propAcc1 = {
     m: propAcc1.m
 };
-(M2 = {}).x = M2.x, M2.x, new function C2() {
+(M21 = M2 || (M2 = {})).x = M21.x, M21.x, new function C2() {
     _class_call_check(this, C2), this.n = this.n;
 }().n;
 var C3 = function C3() {
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/inline.rs b/crates/swc_ecma_minifier/src/compress/optimize/inline.rs
index 539347c3c901..bafad07387cc 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/inline.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/inline.rs
@@ -1,5 +1,3 @@
-use std::convert::Infallible;
-
 use rustc_hash::FxHashMap;
 use swc_common::{collections::AHashSet, util::take::Take, EqIgnoreSpan, Mark, Spanned};
 use swc_ecma_ast::*;
@@ -893,69 +891,6 @@ impl Optimizer<'_> {
             _ => (),
         }
     }
-
-    /// Optimizes
-    /// ```ts
-    /// var Foo;
-    /// Foo || (Foo = {}
-    /// ```
-    pub(super) fn optimize_ts_enum_init(&mut self, e: &mut Expr) -> Option<Infallible> {
-        if !self.options.reduce_vars {
-            return None;
-        }
-
-        let bin = match e {
-            Expr::Bin(bin @ BinExpr { op: op!("||"), .. }) => bin,
-            _ => return None,
-        };
-
-        let lhs = bin.left.as_ident()?;
-
-        let rhs = match &mut *bin.right {
-            Expr::Assign(a @ AssignExpr { op: op!("="), .. }) => a,
-            _ => return None,
-        };
-
-        if !self.may_remove_ident(lhs) {
-            return None;
-        }
-
-        {
-            let usage = self.data.vars.get(&lhs.to_id())?;
-
-            if !usage.declared {
-                return None;
-            }
-            if usage.assign_count != 1 {
-                return None;
-            }
-        }
-
-        if let Expr::Object(obj) = &*rhs.right {
-            if !obj.props.is_empty() {
-                return None;
-            }
-        } else {
-            return None;
-        }
-
-        let rhs_left = rhs.left.as_ident()?;
-
-        if !lhs.eq_ignore_span(rhs_left) {
-            return None;
-        }
-
-        self.changed = true;
-        report_change!("inline: Removed `||` operator");
-        *e = Expr::Assign(AssignExpr {
-            span: rhs.span,
-            op: op!("="),
-            left: lhs.clone().into(),
-            right: rhs.right.take(),
-        });
-
-        None
-    }
 }
 
 fn is_arrow_simple_enough_for_copy(e: &ArrowExpr) -> bool {
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/mod.rs b/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
index 626730fc3a89..09556b6c356d 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
@@ -1830,12 +1830,6 @@ impl VisitMut for Optimizer<'_> {
             debug_assert_valid(e);
         }
 
-        self.optimize_ts_enum_init(e);
-
-        if e.is_seq() {
-            debug_assert_valid(e);
-        }
-
         self.optimize_str_access_to_arguments(e);
 
         if e.is_seq() {
diff --git a/crates/swc_ecma_minifier/tests/benches-full/jquery.js b/crates/swc_ecma_minifier/tests/benches-full/jquery.js
index d37b06d5fd2c..9030d0ce0dda 100644
--- a/crates/swc_ecma_minifier/tests/benches-full/jquery.js
+++ b/crates/swc_ecma_minifier/tests/benches-full/jquery.js
@@ -2562,7 +2562,7 @@
     }
     function ajaxExtend(target, src) {
         var key, deep, flatOptions = jQuery.ajaxSettings.flatOptions || {};
-        for(key in src)void 0 !== src[key] && ((flatOptions[key] ? target : deep = {})[key] = src[key]);
+        for(key in src)void 0 !== src[key] && ((flatOptions[key] ? target : deep || (deep = {}))[key] = src[key]);
         return deep && jQuery.extend(!0, target, deep), target;
     }
     originAnchor.href = location.href, jQuery.extend({
diff --git a/crates/swc_ecma_minifier/tests/benches-full/lodash.js b/crates/swc_ecma_minifier/tests/benches-full/lodash.js
index cf70f355e290..6d3b60706526 100644
--- a/crates/swc_ecma_minifier/tests/benches-full/lodash.js
+++ b/crates/swc_ecma_minifier/tests/benches-full/lodash.js
@@ -1287,7 +1287,7 @@
         }
         function copyObject(source, props, object, customizer) {
             var isNew = !object;
-            object = {};
+            object || (object = {});
             for(var index = -1, length = props.length; ++index < length;){
                 var key = props[index], newValue = customizer ? customizer(object[key], source[key], key, object, source) : undefined;
                 undefined === newValue && (newValue = source[key]), isNew ? baseAssignValue(object, key, newValue) : assignValue(object, key, newValue);
diff --git a/crates/swc_ecma_minifier/tests/benches-full/terser.js b/crates/swc_ecma_minifier/tests/benches-full/terser.js
index c372b8298801..a733570dff7c 100644
--- a/crates/swc_ecma_minifier/tests/benches-full/terser.js
+++ b/crates/swc_ecma_minifier/tests/benches-full/terser.js
@@ -86,7 +86,7 @@
         return MAP;
     }();
     function make_node(ctor, orig, props) {
-        return props = {}, orig && (props.start || (props.start = orig.start), props.end || (props.end = orig.end)), new ctor(props);
+        return props || (props = {}), orig && (props.start || (props.start = orig.start), props.end || (props.end = orig.end)), new ctor(props);
     }
     function push_uniq(array, el) {
         array.includes(el) || array.push(el);
@@ -5031,7 +5031,7 @@
             return !this.fixed || this.fixed instanceof AST_Node ? this.fixed : this.fixed();
         }
         unmangleable(options) {
-            return options = {}, !!(function_defs && function_defs.has(this.id) && keep_name(options.keep_fnames, this.orig[0].name)) || this.global && !options.toplevel || 1 & this.export || this.undeclared || !options.eval && this.scope.pinned() || (this.orig[0] instanceof AST_SymbolLambda || this.orig[0] instanceof AST_SymbolDefun) && keep_name(options.keep_fnames, this.orig[0].name) || this.orig[0] instanceof AST_SymbolMethod || (this.orig[0] instanceof AST_SymbolClass || this.orig[0] instanceof AST_SymbolDefClass) && keep_name(options.keep_classnames, this.orig[0].name);
+            return options || (options = {}), !!(function_defs && function_defs.has(this.id) && keep_name(options.keep_fnames, this.orig[0].name)) || this.global && !options.toplevel || 1 & this.export || this.undeclared || !options.eval && this.scope.pinned() || (this.orig[0] instanceof AST_SymbolLambda || this.orig[0] instanceof AST_SymbolDefun) && keep_name(options.keep_fnames, this.orig[0].name) || this.orig[0] instanceof AST_SymbolMethod || (this.orig[0] instanceof AST_SymbolClass || this.orig[0] instanceof AST_SymbolDefClass) && keep_name(options.keep_classnames, this.orig[0].name);
         }
         mangle(options) {
             const cache = options.cache && options.cache.props;
diff --git a/crates/swc_ecma_minifier/tests/benches-full/victory.js b/crates/swc_ecma_minifier/tests/benches-full/victory.js
index 70bbc01bcfc4..7ec31122d64a 100644
--- a/crates/swc_ecma_minifier/tests/benches-full/victory.js
+++ b/crates/swc_ecma_minifier/tests/benches-full/victory.js
@@ -7445,7 +7445,7 @@
             var assignValue = __webpack_require__("../../../node_modules/lodash/_assignValue.js"), baseAssignValue = __webpack_require__("../../../node_modules/lodash/_baseAssignValue.js");
             module1.exports = function(source, props, object, customizer) {
                 var isNew = !object;
-                object = {};
+                object || (object = {});
                 for(var index = -1, length = props.length; ++index < length;){
                     var key = props[index], newValue = customizer ? customizer(object[key], source[key], key, object, source) : void 0;
                     void 0 === newValue && (newValue = source[key]), isNew ? baseAssignValue(object, key, newValue) : assignValue(object, key, newValue);
diff --git a/crates/swc_ecma_minifier/tests/benches-full/vue.js b/crates/swc_ecma_minifier/tests/benches-full/vue.js
index 37b3541e963a..eef7427c2866 100644
--- a/crates/swc_ecma_minifier/tests/benches-full/vue.js
+++ b/crates/swc_ecma_minifier/tests/benches-full/vue.js
@@ -1304,7 +1304,7 @@
                 Ctor.superOptions = superOptions;
                 var modifiedOptions = function(Ctor) {
                     var modified, latest = Ctor.options, sealed = Ctor.sealedOptions;
-                    for(var key in latest)latest[key] !== sealed[key] && ((modified = {})[key] = latest[key]);
+                    for(var key in latest)latest[key] !== sealed[key] && (modified || (modified = {}), modified[key] = latest[key]);
                     return modified;
                 }(Ctor);
                 modifiedOptions && extend(Ctor.extendOptions, modifiedOptions), (options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions)).name && (options.components[options.name] = Ctor);
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/6628/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/6628/output.js
index 1ccc4f492b48..5d12f36e0bb6 100644
--- a/crates/swc_ecma_minifier/tests/fixture/issues/6628/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/6628/output.js
@@ -5,7 +5,7 @@
     }();
     !function(n) {
         n[n.Var = 0] = "Var", n[n.All = 1] = "All";
-    }(CallbackType = {});
+    }(CallbackType || (CallbackType = {}));
     var CepRule = function() {
         eval();
     }();
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/firebase-core/1/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/firebase-core/1/output.js
index 58407baf6f45..ac575db3c6e3 100644
--- a/crates/swc_ecma_minifier/tests/fixture/issues/firebase-core/1/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/firebase-core/1/output.js
@@ -2321,7 +2321,7 @@
                 }
             });
             const instances = [];
-            (LogLevel1 = LogLevel = {})[LogLevel1.DEBUG = 0] = "DEBUG", LogLevel1[LogLevel1.VERBOSE = 1] = "VERBOSE", LogLevel1[LogLevel1.INFO = 2] = "INFO", LogLevel1[LogLevel1.WARN = 3] = "WARN", LogLevel1[LogLevel1.ERROR = 4] = "ERROR", LogLevel1[LogLevel1.SILENT = 5] = "SILENT";
+            (LogLevel1 = LogLevel || (LogLevel = {}))[LogLevel1.DEBUG = 0] = "DEBUG", LogLevel1[LogLevel1.VERBOSE = 1] = "VERBOSE", LogLevel1[LogLevel1.INFO = 2] = "INFO", LogLevel1[LogLevel1.WARN = 3] = "WARN", LogLevel1[LogLevel1.ERROR = 4] = "ERROR", LogLevel1[LogLevel1.SILENT = 5] = "SILENT";
             const levelStringToEnum = {
                 debug: LogLevel.DEBUG,
                 verbose: LogLevel.VERBOSE,
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/firebase-firestore/1/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/firebase-firestore/1/output.js
index ad648bdf57f0..56375505c2bc 100644
--- a/crates/swc_ecma_minifier/tests/fixture/issues/firebase-firestore/1/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/firebase-firestore/1/output.js
@@ -1273,7 +1273,7 @@
                         return L();
                 }
             }
-            (ln = hn = {})[ln.OK = 0] = "OK", ln[ln.CANCELLED = 1] = "CANCELLED", ln[ln.UNKNOWN = 2] = "UNKNOWN", ln[ln.INVALID_ARGUMENT = 3] = "INVALID_ARGUMENT", ln[ln.DEADLINE_EXCEEDED = 4] = "DEADLINE_EXCEEDED", ln[ln.NOT_FOUND = 5] = "NOT_FOUND", ln[ln.ALREADY_EXISTS = 6] = "ALREADY_EXISTS", ln[ln.PERMISSION_DENIED = 7] = "PERMISSION_DENIED", ln[ln.UNAUTHENTICATED = 16] = "UNAUTHENTICATED", ln[ln.RESOURCE_EXHAUSTED = 8] = "RESOURCE_EXHAUSTED", ln[ln.FAILED_PRECONDITION = 9] = "FAILED_PRECONDITION", ln[ln.ABORTED = 10] = "ABORTED", ln[ln.OUT_OF_RANGE = 11] = "OUT_OF_RANGE", ln[ln.UNIMPLEMENTED = 12] = "UNIMPLEMENTED", ln[ln.INTERNAL = 13] = "INTERNAL", ln[ln.UNAVAILABLE = 14] = "UNAVAILABLE", ln[ln.DATA_LOSS = 15] = "DATA_LOSS";
+            (ln = hn || (hn = {}))[ln.OK = 0] = "OK", ln[ln.CANCELLED = 1] = "CANCELLED", ln[ln.UNKNOWN = 2] = "UNKNOWN", ln[ln.INVALID_ARGUMENT = 3] = "INVALID_ARGUMENT", ln[ln.DEADLINE_EXCEEDED = 4] = "DEADLINE_EXCEEDED", ln[ln.NOT_FOUND = 5] = "NOT_FOUND", ln[ln.ALREADY_EXISTS = 6] = "ALREADY_EXISTS", ln[ln.PERMISSION_DENIED = 7] = "PERMISSION_DENIED", ln[ln.UNAUTHENTICATED = 16] = "UNAUTHENTICATED", ln[ln.RESOURCE_EXHAUSTED = 8] = "RESOURCE_EXHAUSTED", ln[ln.FAILED_PRECONDITION = 9] = "FAILED_PRECONDITION", ln[ln.ABORTED = 10] = "ABORTED", ln[ln.OUT_OF_RANGE = 11] = "OUT_OF_RANGE", ln[ln.UNIMPLEMENTED = 12] = "UNIMPLEMENTED", ln[ln.INTERNAL = 13] = "INTERNAL", ln[ln.UNAVAILABLE = 14] = "UNAVAILABLE", ln[ln.DATA_LOSS = 15] = "DATA_LOSS";
             class wn {
                 constructor(t, e){
                     this.comparator = t, this.root = e || mn.EMPTY;
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/quagga2/1.4.2/1/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/quagga2/1.4.2/1/output.js
index f61eaa5f7575..e4c0fcf46497 100644
--- a/crates/swc_ecma_minifier/tests/fixture/issues/quagga2/1.4.2/1/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/quagga2/1.4.2/1/output.js
@@ -2083,7 +2083,7 @@
             var assignValue = __webpack_require__(55), baseAssignValue = __webpack_require__(37);
             module1.exports = function(source, props, object, customizer) {
                 var isNew = !object;
-                object = {};
+                object || (object = {});
                 for(var index = -1, length = props.length; ++index < length;){
                     var key = props[index], newValue = customizer ? customizer(object[key], source[key], key, object, source) : void 0;
                     void 0 === newValue && (newValue = source[key]), isNew ? baseAssignValue(object, key, newValue) : assignValue(object, key, newValue);
@@ -3252,7 +3252,7 @@
                 }
             };
             var image_debug = __webpack_require__(9), classCallCheck = __webpack_require__(3), classCallCheck_default = __webpack_require__.n(classCallCheck), createClass = __webpack_require__(4), createClass_default = __webpack_require__.n(createClass), assertThisInitialized = __webpack_require__(1), assertThisInitialized_default = __webpack_require__.n(assertThisInitialized), inherits = __webpack_require__(6), inherits_default = __webpack_require__.n(inherits), possibleConstructorReturn = __webpack_require__(5), possibleConstructorReturn_default = __webpack_require__.n(possibleConstructorReturn), getPrototypeOf = __webpack_require__(2), getPrototypeOf_default = __webpack_require__.n(getPrototypeOf), defineProperty = __webpack_require__(0), defineProperty_default = __webpack_require__.n(defineProperty), array_helper = __webpack_require__(10);
-            (BarcodeDirection = BarcodeDirection1 = {})[BarcodeDirection.Forward = 1] = "Forward", BarcodeDirection[BarcodeDirection.Reverse = -1] = "Reverse";
+            (BarcodeDirection = BarcodeDirection1 || (BarcodeDirection1 = {}))[BarcodeDirection.Forward = 1] = "Forward", BarcodeDirection[BarcodeDirection.Reverse = -1] = "Reverse";
             var barcode_reader = function() {
                 function BarcodeReader(config, supplements) {
                     return classCallCheck_default()(this, BarcodeReader), defineProperty_default()(this, "_row", []), defineProperty_default()(this, "config", {}), defineProperty_default()(this, "supplements", []), defineProperty_default()(this, "SINGLE_CODE_ERROR", 0), defineProperty_default()(this, "FORMAT", "unknown"), defineProperty_default()(this, "CONFIG_KEYS", {}), this._row = [], this.config = config || {}, supplements && (this.supplements = supplements), this;
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/basic/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/basic/input.js
deleted file mode 100644
index 7e170ddf8954..000000000000
--- a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/basic/input.js
+++ /dev/null
@@ -1,8 +0,0 @@
-var Foo;
-(function (Foo) {
-    Foo[Foo["a"] = 1] = "a";
-    Foo[Foo["b"] = 2] = "b";
-})(Foo || (Foo = {}));
-
-
-export { Foo };
\ No newline at end of file
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/basic/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/basic/output.js
deleted file mode 100644
index e95917cbcebc..000000000000
--- a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/basic/output.js
+++ /dev/null
@@ -1,3 +0,0 @@
-var Foo, Foo1;
-(Foo1 = Foo = {})[Foo1.a = 1] = "a", Foo1[Foo1.b = 2] = "b";
-export { Foo };
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/multi-enum/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/multi-enum/input.js
deleted file mode 100644
index b46b15195624..000000000000
--- a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/multi-enum/input.js
+++ /dev/null
@@ -1,9 +0,0 @@
-var Foo;
-(function (Foo) {
-    Foo[Foo["a"] = 1] = "a";
-})(Foo || (Foo = {}));
-(function (Foo) {
-    Foo[Foo["b"] = 2] = "b";
-})(Foo || (Foo = {}));
-
-export { Foo }
\ No newline at end of file
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/multi-enum/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/multi-enum/output.js
deleted file mode 100644
index 888ec0967ff3..000000000000
--- a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/multi-enum/output.js
+++ /dev/null
@@ -1,3 +0,0 @@
-var Foo, Foo1, Foo2;
-(Foo1 = Foo || (Foo = {}))[Foo1.a = 1] = "a", (Foo2 = Foo || (Foo = {}))[Foo2.b = 2] = "b";
-export { Foo };
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/unused/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/unused/input.js
deleted file mode 100644
index b609648066ad..000000000000
--- a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/unused/input.js
+++ /dev/null
@@ -1,6 +0,0 @@
-var Foo;
-(function (Foo) {
-    Foo[Foo["a"] = 1] = "a";
-    Foo[Foo["b"] = 2] = "b";
-})(Foo || (Foo = {}));
-
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/unused/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/unused/output.js
deleted file mode 100644
index 9a3dd1641389..000000000000
--- a/crates/swc_ecma_minifier/tests/fixture/issues/ts-enum/unused/output.js
+++ /dev/null
@@ -1,2 +0,0 @@
-var Foo;
-(Foo = {})[Foo.a = 1] = "a", Foo[Foo.b = 2] = "b";
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/typescript/1/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/typescript/1/output.js
index cfe3011b105d..225688a1f604 100644
--- a/crates/swc_ecma_minifier/tests/fixture/issues/typescript/1/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/typescript/1/output.js
@@ -1,6 +1,6 @@
-var ts, dynamicImportUMDHelper;
-(ts = {}).transformModule = function(context) {
-    var currentSourceFile, currentModuleInfo, needUMDDynamicImportHelper, factory = context.factory, emitHelpers = context.getEmitHelperFactory, startLexicalEnvironment = context.startLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration, compilerOptions = context.getCompilerOptions(), resolver = context.getEmitResolver(), host = context.getEmitHost(), languageVersion = ts.getEmitScriptTarget(compilerOptions), moduleKind = ts.getEmitModuleKind(compilerOptions), previousOnSubstituteNode = context.onSubstituteNode, previousOnEmitNode = context.onEmitNode;
+var ts, ts1, dynamicImportUMDHelper;
+(ts1 = ts || (ts = {})).transformModule = function(context) {
+    var currentSourceFile, currentModuleInfo, needUMDDynamicImportHelper, factory = context.factory, emitHelpers = context.getEmitHelperFactory, startLexicalEnvironment = context.startLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration, compilerOptions = context.getCompilerOptions(), resolver = context.getEmitResolver(), host = context.getEmitHost(), languageVersion = ts1.getEmitScriptTarget(compilerOptions), moduleKind = ts1.getEmitModuleKind(compilerOptions), previousOnSubstituteNode = context.onSubstituteNode, previousOnEmitNode = context.onEmitNode;
     context.onSubstituteNode = function(hint, node) {
         return (node = previousOnSubstituteNode(hint, node)).id && noSubstitution[node.id] ? node : 1 === hint ? function(node) {
             switch(node.kind){
@@ -8,28 +8,28 @@ var ts, dynamicImportUMDHelper;
                     return substituteExpressionIdentifier(node);
                 case 207:
                     return function(node) {
-                        if (ts.isIdentifier(node.expression)) {
+                        if (ts1.isIdentifier(node.expression)) {
                             var expression = substituteExpressionIdentifier(node.expression);
-                            if (noSubstitution[ts.getNodeId(expression)] = !0, !ts.isIdentifier(expression) && !(4096 & ts.getEmitFlags(node.expression))) return ts.addEmitFlags(factory.updateCallExpression(node, expression, void 0, node.arguments), 536870912);
+                            if (noSubstitution[ts1.getNodeId(expression)] = !0, !ts1.isIdentifier(expression) && !(4096 & ts1.getEmitFlags(node.expression))) return ts1.addEmitFlags(factory.updateCallExpression(node, expression, void 0, node.arguments), 536870912);
                         }
                         return node;
                     }(node);
                 case 209:
                     return function(node) {
-                        if (ts.isIdentifier(node.tag)) {
+                        if (ts1.isIdentifier(node.tag)) {
                             var tag = substituteExpressionIdentifier(node.tag);
-                            if (noSubstitution[ts.getNodeId(tag)] = !0, !ts.isIdentifier(tag) && !(4096 & ts.getEmitFlags(node.tag))) return ts.addEmitFlags(factory.updateTaggedTemplateExpression(node, tag, void 0, node.template), 536870912);
+                            if (noSubstitution[ts1.getNodeId(tag)] = !0, !ts1.isIdentifier(tag) && !(4096 & ts1.getEmitFlags(node.tag))) return ts1.addEmitFlags(factory.updateTaggedTemplateExpression(node, tag, void 0, node.template), 536870912);
                         }
                         return node;
                     }(node);
                 case 220:
                     return function(node) {
-                        if (ts.isAssignmentOperator(node.operatorToken.kind) && ts.isIdentifier(node.left) && !ts.isGeneratedIdentifier(node.left) && !ts.isLocalName(node.left) && !ts.isDeclarationNameOfEnumOrNamespace(node.left)) {
+                        if (ts1.isAssignmentOperator(node.operatorToken.kind) && ts1.isIdentifier(node.left) && !ts1.isGeneratedIdentifier(node.left) && !ts1.isLocalName(node.left) && !ts1.isDeclarationNameOfEnumOrNamespace(node.left)) {
                             var exportedNames = getExports(node.left);
                             if (exportedNames) {
                                 for(var expression = node, _i = 0; _i < exportedNames.length; _i++){
                                     var exportName = exportedNames[_i];
-                                    noSubstitution[ts.getNodeId(expression)] = !0, expression = createExportExpression(exportName, expression, node);
+                                    noSubstitution[ts1.getNodeId(expression)] = !0, expression = createExportExpression(exportName, expression, node);
                                 }
                                 return expression;
                             }
@@ -38,29 +38,29 @@ var ts, dynamicImportUMDHelper;
                     }(node);
             }
             return node;
-        }(node) : ts.isShorthandPropertyAssignment(node) ? function(node) {
+        }(node) : ts1.isShorthandPropertyAssignment(node) ? function(node) {
             var name = node.name, exportedOrImportedName = substituteExpressionIdentifier(name);
             if (exportedOrImportedName !== name) {
                 if (node.objectAssignmentInitializer) {
                     var initializer = factory.createAssignment(exportedOrImportedName, node.objectAssignmentInitializer);
-                    return ts.setTextRange(factory.createPropertyAssignment(name, initializer), node);
+                    return ts1.setTextRange(factory.createPropertyAssignment(name, initializer), node);
                 }
-                return ts.setTextRange(factory.createPropertyAssignment(name, exportedOrImportedName), node);
+                return ts1.setTextRange(factory.createPropertyAssignment(name, exportedOrImportedName), node);
             }
             return node;
         }(node) : node;
     }, context.onEmitNode = function(hint, node, emitCallback) {
-        303 === node.kind ? (currentSourceFile = node, currentModuleInfo = moduleInfoMap[ts.getOriginalNodeId(currentSourceFile)], previousOnEmitNode(hint, node, emitCallback), currentSourceFile = void 0, currentModuleInfo = void 0) : previousOnEmitNode(hint, node, emitCallback);
+        303 === node.kind ? (currentSourceFile = node, currentModuleInfo = moduleInfoMap[ts1.getOriginalNodeId(currentSourceFile)], previousOnEmitNode(hint, node, emitCallback), currentSourceFile = void 0, currentModuleInfo = void 0) : previousOnEmitNode(hint, node, emitCallback);
     }, context.enableSubstitution(207), context.enableSubstitution(209), context.enableSubstitution(79), context.enableSubstitution(220), context.enableSubstitution(295), context.enableEmitNotification(303);
     var moduleInfoMap = [], deferredExports = [], noSubstitution = [];
-    return ts.chainBundle(context, function(node) {
-        if (node.isDeclarationFile || !(ts.isEffectiveExternalModule(node, compilerOptions) || 4194304 & node.transformFlags || ts.isJsonSourceFile(node) && ts.hasJsonModuleEmitEnabled(compilerOptions) && ts.outFile(compilerOptions))) return node;
-        currentSourceFile = node, currentModuleInfo = ts.collectExternalModuleInfo(context, node, resolver, compilerOptions), moduleInfoMap[ts.getOriginalNodeId(node)] = currentModuleInfo;
+    return ts1.chainBundle(context, function(node) {
+        if (node.isDeclarationFile || !(ts1.isEffectiveExternalModule(node, compilerOptions) || 4194304 & node.transformFlags || ts1.isJsonSourceFile(node) && ts1.hasJsonModuleEmitEnabled(compilerOptions) && ts1.outFile(compilerOptions))) return node;
+        currentSourceFile = node, currentModuleInfo = ts1.collectExternalModuleInfo(context, node, resolver, compilerOptions), moduleInfoMap[ts1.getOriginalNodeId(node)] = currentModuleInfo;
         var updated = (function(moduleKind) {
             switch(moduleKind){
-                case ts.ModuleKind.AMD:
+                case ts1.ModuleKind.AMD:
                     return transformAMDModule;
-                case ts.ModuleKind.UMD:
+                case ts1.ModuleKind.UMD:
                     return transformUMDModule;
                 default:
                     return transformCommonJSModule;
@@ -69,24 +69,24 @@ var ts, dynamicImportUMDHelper;
         return currentSourceFile = void 0, currentModuleInfo = void 0, needUMDDynamicImportHelper = !1, updated;
     });
     function shouldEmitUnderscoreUnderscoreESModule() {
-        return !!(!currentModuleInfo.exportEquals && ts.isExternalModule(currentSourceFile));
+        return !!(!currentModuleInfo.exportEquals && ts1.isExternalModule(currentSourceFile));
     }
     function transformCommonJSModule(node) {
         startLexicalEnvironment();
-        var statements = [], ensureUseStrict = ts.getStrictOptionValue(compilerOptions, "alwaysStrict") || !compilerOptions.noImplicitUseStrict && ts.isExternalModule(currentSourceFile), statementOffset = factory.copyPrologue(node.statements, statements, ensureUseStrict && !ts.isJsonSourceFile(node), topLevelVisitor);
-        if (shouldEmitUnderscoreUnderscoreESModule() && ts.append(statements, createUnderscoreUnderscoreESModule()), ts.length(currentModuleInfo.exportedNames)) for(var i = 0; i < currentModuleInfo.exportedNames.length; i += 50)ts.append(statements, factory.createExpressionStatement(ts.reduceLeft(currentModuleInfo.exportedNames.slice(i, i + 50), function(prev, nextId) {
-            return factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), factory.createIdentifier(ts.idText(nextId))), prev);
+        var statements = [], ensureUseStrict = ts1.getStrictOptionValue(compilerOptions, "alwaysStrict") || !compilerOptions.noImplicitUseStrict && ts1.isExternalModule(currentSourceFile), statementOffset = factory.copyPrologue(node.statements, statements, ensureUseStrict && !ts1.isJsonSourceFile(node), topLevelVisitor);
+        if (shouldEmitUnderscoreUnderscoreESModule() && ts1.append(statements, createUnderscoreUnderscoreESModule()), ts1.length(currentModuleInfo.exportedNames)) for(var i = 0; i < currentModuleInfo.exportedNames.length; i += 50)ts1.append(statements, factory.createExpressionStatement(ts1.reduceLeft(currentModuleInfo.exportedNames.slice(i, i + 50), function(prev, nextId) {
+            return factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), factory.createIdentifier(ts1.idText(nextId))), prev);
         }, factory.createVoidZero())));
-        ts.append(statements, ts.visitNode(currentModuleInfo.externalHelpersImportDeclaration, topLevelVisitor, ts.isStatement)), ts.addRange(statements, ts.visitNodes(node.statements, topLevelVisitor, ts.isStatement, statementOffset)), addExportEqualsIfNeeded(statements, !1), ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment());
-        var updated = factory.updateSourceFile(node, ts.setTextRange(factory.createNodeArray(statements), node.statements));
-        return ts.addEmitHelpers(updated, context.readEmitHelpers()), updated;
+        ts1.append(statements, ts1.visitNode(currentModuleInfo.externalHelpersImportDeclaration, topLevelVisitor, ts1.isStatement)), ts1.addRange(statements, ts1.visitNodes(node.statements, topLevelVisitor, ts1.isStatement, statementOffset)), addExportEqualsIfNeeded(statements, !1), ts1.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment());
+        var updated = factory.updateSourceFile(node, ts1.setTextRange(factory.createNodeArray(statements), node.statements));
+        return ts1.addEmitHelpers(updated, context.readEmitHelpers()), updated;
     }
     function transformAMDModule(node) {
-        var define = factory.createIdentifier("define"), moduleName = ts.tryGetModuleNameFromFile(factory, node, host, compilerOptions), jsonSourceFile = ts.isJsonSourceFile(node) && node, _a = collectAsynchronousDependencies(node, !0), aliasedModuleNames = _a.aliasedModuleNames, unaliasedModuleNames = _a.unaliasedModuleNames, importAliasNames = _a.importAliasNames, updated = factory.updateSourceFile(node, ts.setTextRange(factory.createNodeArray([
+        var define = factory.createIdentifier("define"), moduleName = ts1.tryGetModuleNameFromFile(factory, node, host, compilerOptions), jsonSourceFile = ts1.isJsonSourceFile(node) && node, _a = collectAsynchronousDependencies(node, !0), aliasedModuleNames = _a.aliasedModuleNames, unaliasedModuleNames = _a.unaliasedModuleNames, importAliasNames = _a.importAliasNames, updated = factory.updateSourceFile(node, ts1.setTextRange(factory.createNodeArray([
             factory.createExpressionStatement(factory.createCallExpression(define, void 0, __spreadArray(__spreadArray([], moduleName ? [
                 moduleName
             ] : [], !0), [
-                factory.createArrayLiteralExpression(jsonSourceFile ? ts.emptyArray : __spreadArray(__spreadArray([
+                factory.createArrayLiteralExpression(jsonSourceFile ? ts1.emptyArray : __spreadArray(__spreadArray([
                     factory.createStringLiteral("require"),
                     factory.createStringLiteral("exports")
                 ], aliasedModuleNames, !0), unaliasedModuleNames, !0)),
@@ -96,12 +96,12 @@ var ts, dynamicImportUMDHelper;
                 ], importAliasNames, !0), void 0, transformAsynchronousModuleBody(node))
             ], !1)))
         ]), node.statements));
-        return ts.addEmitHelpers(updated, context.readEmitHelpers()), updated;
+        return ts1.addEmitHelpers(updated, context.readEmitHelpers()), updated;
     }
     function transformUMDModule(node) {
-        var _a = collectAsynchronousDependencies(node, !1), aliasedModuleNames = _a.aliasedModuleNames, unaliasedModuleNames = _a.unaliasedModuleNames, importAliasNames = _a.importAliasNames, moduleName = ts.tryGetModuleNameFromFile(factory, node, host, compilerOptions), umdHeader = factory.createFunctionExpression(void 0, void 0, void 0, void 0, [
+        var _a = collectAsynchronousDependencies(node, !1), aliasedModuleNames = _a.aliasedModuleNames, unaliasedModuleNames = _a.unaliasedModuleNames, importAliasNames = _a.importAliasNames, moduleName = ts1.tryGetModuleNameFromFile(factory, node, host, compilerOptions), umdHeader = factory.createFunctionExpression(void 0, void 0, void 0, void 0, [
             factory.createParameterDeclaration(void 0, void 0, void 0, "factory")
-        ], void 0, ts.setTextRange(factory.createBlock([
+        ], void 0, ts1.setTextRange(factory.createBlock([
             factory.createIfStatement(factory.createLogicalAnd(factory.createTypeCheck(factory.createIdentifier("module"), "object"), factory.createTypeCheck(factory.createPropertyAccessExpression(factory.createIdentifier("module"), "exports"), "object")), factory.createBlock([
                 factory.createVariableStatement(void 0, [
                     factory.createVariableDeclaration("v", void 0, void 0, factory.createCallExpression(factory.createIdentifier("factory"), void 0, [
@@ -109,7 +109,7 @@ var ts, dynamicImportUMDHelper;
                         factory.createIdentifier("exports")
                     ]))
                 ]),
-                ts.setEmitFlags(factory.createIfStatement(factory.createStrictInequality(factory.createIdentifier("v"), factory.createIdentifier("undefined")), factory.createExpressionStatement(factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("module"), "exports"), factory.createIdentifier("v")))), 1)
+                ts1.setEmitFlags(factory.createIfStatement(factory.createStrictInequality(factory.createIdentifier("v"), factory.createIdentifier("undefined")), factory.createExpressionStatement(factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("module"), "exports"), factory.createIdentifier("v")))), 1)
             ]), factory.createIfStatement(factory.createLogicalAnd(factory.createTypeCheck(factory.createIdentifier("define"), "function"), factory.createPropertyAccessExpression(factory.createIdentifier("define"), "amd")), factory.createBlock([
                 factory.createExpressionStatement(factory.createCallExpression(factory.createIdentifier("define"), void 0, __spreadArray(__spreadArray([], moduleName ? [
                     moduleName
@@ -121,7 +121,7 @@ var ts, dynamicImportUMDHelper;
                     factory.createIdentifier("factory")
                 ], !1)))
             ])))
-        ], !0), void 0)), updated = factory.updateSourceFile(node, ts.setTextRange(factory.createNodeArray([
+        ], !0), void 0)), updated = factory.updateSourceFile(node, ts1.setTextRange(factory.createNodeArray([
             factory.createExpressionStatement(factory.createCallExpression(umdHeader, void 0, [
                 factory.createFunctionExpression(void 0, void 0, void 0, void 0, __spreadArray([
                     factory.createParameterDeclaration(void 0, void 0, void 0, "require"),
@@ -129,7 +129,7 @@ var ts, dynamicImportUMDHelper;
                 ], importAliasNames, !0), void 0, transformAsynchronousModuleBody(node))
             ]))
         ]), node.statements));
-        return ts.addEmitHelpers(updated, context.readEmitHelpers()), updated;
+        return ts1.addEmitHelpers(updated, context.readEmitHelpers()), updated;
     }
     function collectAsynchronousDependencies(node, includeNonAmdDependencies) {
         for(var aliasedModuleNames = [], unaliasedModuleNames = [], importAliasNames = [], _i = 0, _a = node.amdDependencies; _i < _a.length; _i++){
@@ -137,8 +137,8 @@ var ts, dynamicImportUMDHelper;
             amdDependency.name ? (aliasedModuleNames.push(factory.createStringLiteral(amdDependency.path)), importAliasNames.push(factory.createParameterDeclaration(void 0, void 0, void 0, amdDependency.name))) : unaliasedModuleNames.push(factory.createStringLiteral(amdDependency.path));
         }
         for(var _b = 0, _c = currentModuleInfo.externalImports; _b < _c.length; _b++){
-            var importNode = _c[_b], externalModuleName = ts.getExternalModuleNameLiteral(factory, importNode, currentSourceFile, host, resolver, compilerOptions), importAliasName = ts.getLocalNameForExternalImport(factory, importNode, currentSourceFile);
-            externalModuleName && (includeNonAmdDependencies && importAliasName ? (ts.setEmitFlags(importAliasName, 4), aliasedModuleNames.push(externalModuleName), importAliasNames.push(factory.createParameterDeclaration(void 0, void 0, void 0, importAliasName))) : unaliasedModuleNames.push(externalModuleName));
+            var importNode = _c[_b], externalModuleName = ts1.getExternalModuleNameLiteral(factory, importNode, currentSourceFile, host, resolver, compilerOptions), importAliasName = ts1.getLocalNameForExternalImport(factory, importNode, currentSourceFile);
+            externalModuleName && (includeNonAmdDependencies && importAliasName ? (ts1.setEmitFlags(importAliasName, 4), aliasedModuleNames.push(externalModuleName), importAliasNames.push(factory.createParameterDeclaration(void 0, void 0, void 0, importAliasName))) : unaliasedModuleNames.push(externalModuleName));
         }
         return {
             aliasedModuleNames: aliasedModuleNames,
@@ -147,30 +147,30 @@ var ts, dynamicImportUMDHelper;
         };
     }
     function getAMDImportExpressionForImport(node) {
-        if (!(ts.isImportEqualsDeclaration(node) || ts.isExportDeclaration(node)) && ts.getExternalModuleNameLiteral(factory, node, currentSourceFile, host, resolver, compilerOptions)) {
-            var name = ts.getLocalNameForExternalImport(factory, node, currentSourceFile), expr = getHelperExpressionForImport(node, name);
+        if (!(ts1.isImportEqualsDeclaration(node) || ts1.isExportDeclaration(node)) && ts1.getExternalModuleNameLiteral(factory, node, currentSourceFile, host, resolver, compilerOptions)) {
+            var name = ts1.getLocalNameForExternalImport(factory, node, currentSourceFile), expr = getHelperExpressionForImport(node, name);
             if (expr !== name) return factory.createExpressionStatement(factory.createAssignment(name, expr));
         }
     }
     function transformAsynchronousModuleBody(node) {
         startLexicalEnvironment();
         var statements = [], statementOffset = factory.copyPrologue(node.statements, statements, !compilerOptions.noImplicitUseStrict, topLevelVisitor);
-        shouldEmitUnderscoreUnderscoreESModule() && ts.append(statements, createUnderscoreUnderscoreESModule()), ts.length(currentModuleInfo.exportedNames) && ts.append(statements, factory.createExpressionStatement(ts.reduceLeft(currentModuleInfo.exportedNames, function(prev, nextId) {
-            return factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), factory.createIdentifier(ts.idText(nextId))), prev);
-        }, factory.createVoidZero()))), ts.append(statements, ts.visitNode(currentModuleInfo.externalHelpersImportDeclaration, topLevelVisitor, ts.isStatement)), moduleKind === ts.ModuleKind.AMD && ts.addRange(statements, ts.mapDefined(currentModuleInfo.externalImports, getAMDImportExpressionForImport)), ts.addRange(statements, ts.visitNodes(node.statements, topLevelVisitor, ts.isStatement, statementOffset)), addExportEqualsIfNeeded(statements, !0), ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment());
+        shouldEmitUnderscoreUnderscoreESModule() && ts1.append(statements, createUnderscoreUnderscoreESModule()), ts1.length(currentModuleInfo.exportedNames) && ts1.append(statements, factory.createExpressionStatement(ts1.reduceLeft(currentModuleInfo.exportedNames, function(prev, nextId) {
+            return factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), factory.createIdentifier(ts1.idText(nextId))), prev);
+        }, factory.createVoidZero()))), ts1.append(statements, ts1.visitNode(currentModuleInfo.externalHelpersImportDeclaration, topLevelVisitor, ts1.isStatement)), moduleKind === ts1.ModuleKind.AMD && ts1.addRange(statements, ts1.mapDefined(currentModuleInfo.externalImports, getAMDImportExpressionForImport)), ts1.addRange(statements, ts1.visitNodes(node.statements, topLevelVisitor, ts1.isStatement, statementOffset)), addExportEqualsIfNeeded(statements, !0), ts1.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment());
         var body = factory.createBlock(statements, !0);
-        return needUMDDynamicImportHelper && ts.addEmitHelper(body, dynamicImportUMDHelper), body;
+        return needUMDDynamicImportHelper && ts1.addEmitHelper(body, dynamicImportUMDHelper), body;
     }
     function addExportEqualsIfNeeded(statements, emitAsReturn) {
         if (currentModuleInfo.exportEquals) {
-            var expressionResult = ts.visitNode(currentModuleInfo.exportEquals.expression, visitor);
+            var expressionResult = ts1.visitNode(currentModuleInfo.exportEquals.expression, visitor);
             if (expressionResult) {
                 if (emitAsReturn) {
                     var statement = factory.createReturnStatement(expressionResult);
-                    ts.setTextRange(statement, currentModuleInfo.exportEquals), ts.setEmitFlags(statement, 1920), statements.push(statement);
+                    ts1.setTextRange(statement, currentModuleInfo.exportEquals), ts1.setEmitFlags(statement, 1920), statements.push(statement);
                 } else {
                     var statement = factory.createExpressionStatement(factory.createAssignment(factory.createPropertyAccessExpression(factory.createIdentifier("module"), "exports"), expressionResult));
-                    ts.setTextRange(statement, currentModuleInfo.exportEquals), ts.setEmitFlags(statement, 1536), statements.push(statement);
+                    ts1.setTextRange(statement, currentModuleInfo.exportEquals), ts1.setEmitFlags(statement, 1536), statements.push(statement);
                 }
             }
         }
@@ -179,52 +179,52 @@ var ts, dynamicImportUMDHelper;
         switch(node.kind){
             case 265:
                 return function(node) {
-                    var statements, namespaceDeclaration = ts.getNamespaceDeclarationNode(node);
-                    if (moduleKind !== ts.ModuleKind.AMD) {
-                        if (!node.importClause) return ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(createRequireCall(node)), node), node);
+                    var statements, namespaceDeclaration = ts1.getNamespaceDeclarationNode(node);
+                    if (moduleKind !== ts1.ModuleKind.AMD) {
+                        if (!node.importClause) return ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(createRequireCall(node)), node), node);
                         var variables = [];
-                        namespaceDeclaration && !ts.isDefaultImport(node) ? variables.push(factory.createVariableDeclaration(factory.cloneNode(namespaceDeclaration.name), void 0, void 0, getHelperExpressionForImport(node, createRequireCall(node)))) : (variables.push(factory.createVariableDeclaration(factory.getGeneratedNameForNode(node), void 0, void 0, getHelperExpressionForImport(node, createRequireCall(node)))), namespaceDeclaration && ts.isDefaultImport(node) && variables.push(factory.createVariableDeclaration(factory.cloneNode(namespaceDeclaration.name), void 0, void 0, factory.getGeneratedNameForNode(node)))), statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(factory.createVariableStatement(void 0, factory.createVariableDeclarationList(variables, languageVersion >= 2 ? 2 : 0)), node), node));
-                    } else namespaceDeclaration && ts.isDefaultImport(node) && (statements = ts.append(statements, factory.createVariableStatement(void 0, factory.createVariableDeclarationList([
-                        ts.setOriginalNode(ts.setTextRange(factory.createVariableDeclaration(factory.cloneNode(namespaceDeclaration.name), void 0, void 0, factory.getGeneratedNameForNode(node)), node), node)
+                        namespaceDeclaration && !ts1.isDefaultImport(node) ? variables.push(factory.createVariableDeclaration(factory.cloneNode(namespaceDeclaration.name), void 0, void 0, getHelperExpressionForImport(node, createRequireCall(node)))) : (variables.push(factory.createVariableDeclaration(factory.getGeneratedNameForNode(node), void 0, void 0, getHelperExpressionForImport(node, createRequireCall(node)))), namespaceDeclaration && ts1.isDefaultImport(node) && variables.push(factory.createVariableDeclaration(factory.cloneNode(namespaceDeclaration.name), void 0, void 0, factory.getGeneratedNameForNode(node)))), statements = ts1.append(statements, ts1.setOriginalNode(ts1.setTextRange(factory.createVariableStatement(void 0, factory.createVariableDeclarationList(variables, languageVersion >= 2 ? 2 : 0)), node), node));
+                    } else namespaceDeclaration && ts1.isDefaultImport(node) && (statements = ts1.append(statements, factory.createVariableStatement(void 0, factory.createVariableDeclarationList([
+                        ts1.setOriginalNode(ts1.setTextRange(factory.createVariableDeclaration(factory.cloneNode(namespaceDeclaration.name), void 0, void 0, factory.getGeneratedNameForNode(node)), node), node)
                     ], languageVersion >= 2 ? 2 : 0))));
                     if (hasAssociatedEndOfDeclarationMarker(node)) {
-                        var id = ts.getOriginalNodeId(node);
+                        var id = ts1.getOriginalNodeId(node);
                         deferredExports[id] = appendExportsOfImportDeclaration(deferredExports[id], node);
                     } else statements = appendExportsOfImportDeclaration(statements, node);
-                    return ts.singleOrMany(statements);
+                    return ts1.singleOrMany(statements);
                 }(node);
             case 264:
                 return function(node) {
-                    if (ts.Debug.assert(ts.isExternalModuleImportEqualsDeclaration(node), "import= for internal module references should be handled in an earlier transformer."), moduleKind !== ts.ModuleKind.AMD ? statements = ts.hasSyntacticModifier(node, 1) ? ts.append(statements, ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(createExportExpression(node.name, createRequireCall(node))), node), node)) : ts.append(statements, ts.setOriginalNode(ts.setTextRange(factory.createVariableStatement(void 0, factory.createVariableDeclarationList([
+                    if (ts1.Debug.assert(ts1.isExternalModuleImportEqualsDeclaration(node), "import= for internal module references should be handled in an earlier transformer."), moduleKind !== ts1.ModuleKind.AMD ? statements = ts1.hasSyntacticModifier(node, 1) ? ts1.append(statements, ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(createExportExpression(node.name, createRequireCall(node))), node), node)) : ts1.append(statements, ts1.setOriginalNode(ts1.setTextRange(factory.createVariableStatement(void 0, factory.createVariableDeclarationList([
                         factory.createVariableDeclaration(factory.cloneNode(node.name), void 0, void 0, createRequireCall(node))
-                    ], languageVersion >= 2 ? 2 : 0)), node), node)) : ts.hasSyntacticModifier(node, 1) && (statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(createExportExpression(factory.getExportName(node), factory.getLocalName(node))), node), node))), hasAssociatedEndOfDeclarationMarker(node)) {
-                        var statements, id = ts.getOriginalNodeId(node);
+                    ], languageVersion >= 2 ? 2 : 0)), node), node)) : ts1.hasSyntacticModifier(node, 1) && (statements = ts1.append(statements, ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(createExportExpression(factory.getExportName(node), factory.getLocalName(node))), node), node))), hasAssociatedEndOfDeclarationMarker(node)) {
+                        var statements, id = ts1.getOriginalNodeId(node);
                         deferredExports[id] = appendExportsOfImportEqualsDeclaration(deferredExports[id], node);
                     } else statements = appendExportsOfImportEqualsDeclaration(statements, node);
-                    return ts.singleOrMany(statements);
+                    return ts1.singleOrMany(statements);
                 }(node);
             case 271:
                 return function(node) {
                     if (node.moduleSpecifier) {
                         var innerExpr, generatedName = factory.getGeneratedNameForNode(node);
-                        if (node.exportClause && ts.isNamedExports(node.exportClause)) {
+                        if (node.exportClause && ts1.isNamedExports(node.exportClause)) {
                             var statements = [];
-                            moduleKind !== ts.ModuleKind.AMD && statements.push(ts.setOriginalNode(ts.setTextRange(factory.createVariableStatement(void 0, factory.createVariableDeclarationList([
+                            moduleKind !== ts1.ModuleKind.AMD && statements.push(ts1.setOriginalNode(ts1.setTextRange(factory.createVariableStatement(void 0, factory.createVariableDeclarationList([
                                 factory.createVariableDeclaration(generatedName, void 0, void 0, createRequireCall(node))
                             ])), node), node));
                             for(var _i = 0, _a = node.exportClause.elements; _i < _a.length; _i++){
                                 var specifier = _a[_i];
-                                if (0 === languageVersion) statements.push(ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(emitHelpers().createCreateBindingHelper(generatedName, factory.createStringLiteralFromNode(specifier.propertyName || specifier.name), specifier.propertyName ? factory.createStringLiteralFromNode(specifier.name) : void 0)), specifier), specifier));
+                                if (0 === languageVersion) statements.push(ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(emitHelpers().createCreateBindingHelper(generatedName, factory.createStringLiteralFromNode(specifier.propertyName || specifier.name), specifier.propertyName ? factory.createStringLiteralFromNode(specifier.name) : void 0)), specifier), specifier));
                                 else {
-                                    var exportNeedsImportDefault = !!ts.getESModuleInterop(compilerOptions) && !(67108864 & ts.getEmitFlags(node)) && "default" === ts.idText(specifier.propertyName || specifier.name), exportedValue = factory.createPropertyAccessExpression(exportNeedsImportDefault ? emitHelpers().createImportDefaultHelper(generatedName) : generatedName, specifier.propertyName || specifier.name);
-                                    statements.push(ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(createExportExpression(factory.getExportName(specifier), exportedValue, void 0, !0)), specifier), specifier));
+                                    var exportNeedsImportDefault = !!ts1.getESModuleInterop(compilerOptions) && !(67108864 & ts1.getEmitFlags(node)) && "default" === ts1.idText(specifier.propertyName || specifier.name), exportedValue = factory.createPropertyAccessExpression(exportNeedsImportDefault ? emitHelpers().createImportDefaultHelper(generatedName) : generatedName, specifier.propertyName || specifier.name);
+                                    statements.push(ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(createExportExpression(factory.getExportName(specifier), exportedValue, void 0, !0)), specifier), specifier));
                                 }
                             }
-                            return ts.singleOrMany(statements);
+                            return ts1.singleOrMany(statements);
                         }
-                        if (!node.exportClause) return ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(emitHelpers().createExportStarHelper(moduleKind !== ts.ModuleKind.AMD ? createRequireCall(node) : generatedName)), node), node);
+                        if (!node.exportClause) return ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(emitHelpers().createExportStarHelper(moduleKind !== ts1.ModuleKind.AMD ? createRequireCall(node) : generatedName)), node), node);
                         var statements = [];
-                        return statements.push(ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(createExportExpression(factory.cloneNode(node.exportClause.name), (innerExpr = moduleKind !== ts.ModuleKind.AMD ? createRequireCall(node) : ts.isExportNamespaceAsDefaultDeclaration(node) ? generatedName : factory.createIdentifier(ts.idText(node.exportClause.name)), !ts.getESModuleInterop(compilerOptions) || 67108864 & ts.getEmitFlags(node) ? innerExpr : ts.getExportNeedsImportStarHelper(node) ? emitHelpers().createImportStarHelper(innerExpr) : innerExpr))), node), node)), ts.singleOrMany(statements);
+                        return statements.push(ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(createExportExpression(factory.cloneNode(node.exportClause.name), (innerExpr = moduleKind !== ts1.ModuleKind.AMD ? createRequireCall(node) : ts1.isExportNamespaceAsDefaultDeclaration(node) ? generatedName : factory.createIdentifier(ts1.idText(node.exportClause.name)), !ts1.getESModuleInterop(compilerOptions) || 67108864 & ts1.getEmitFlags(node) ? innerExpr : ts1.getExportNeedsImportStarHelper(node) ? emitHelpers().createImportStarHelper(innerExpr) : innerExpr))), node), node)), ts1.singleOrMany(statements);
                     }
                 }(node);
             case 270:
@@ -232,65 +232,65 @@ var ts, dynamicImportUMDHelper;
                     if (!node.isExportEquals) {
                         var statements, original = node.original;
                         if (original && hasAssociatedEndOfDeclarationMarker(original)) {
-                            var id = ts.getOriginalNodeId(node);
-                            deferredExports[id] = appendExportStatement(deferredExports[id], factory.createIdentifier("default"), ts.visitNode(node.expression, visitor), node, !0);
-                        } else statements = appendExportStatement(statements, factory.createIdentifier("default"), ts.visitNode(node.expression, visitor), node, !0);
-                        return ts.singleOrMany(statements);
+                            var id = ts1.getOriginalNodeId(node);
+                            deferredExports[id] = appendExportStatement(deferredExports[id], factory.createIdentifier("default"), ts1.visitNode(node.expression, visitor), node, !0);
+                        } else statements = appendExportStatement(statements, factory.createIdentifier("default"), ts1.visitNode(node.expression, visitor), node, !0);
+                        return ts1.singleOrMany(statements);
                     }
                 }(node);
             case 236:
                 return function(node) {
-                    if (ts.hasSyntacticModifier(node, 1)) {
+                    if (ts1.hasSyntacticModifier(node, 1)) {
                         for(var statements, variables, expressions, modifiers = void 0, removeCommentsOnExpressions = !1, _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++){
                             var variable = _a[_i];
-                            if (ts.isIdentifier(variable.name) && ts.isLocalName(variable.name)) modifiers || (modifiers = ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier)), variables = ts.append(variables, variable);
+                            if (ts1.isIdentifier(variable.name) && ts1.isLocalName(variable.name)) modifiers || (modifiers = ts1.visitNodes(node.modifiers, modifierVisitor, ts1.isModifier)), variables = ts1.append(variables, variable);
                             else if (variable.initializer) {
-                                if (!ts.isBindingPattern(variable.name) && (ts.isArrowFunction(variable.initializer) || ts.isFunctionExpression(variable.initializer) || ts.isClassExpression(variable.initializer))) {
-                                    var expression = factory.createAssignment(ts.setTextRange(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), variable.name), variable.name), factory.createIdentifier(ts.getTextOfIdentifierOrLiteral(variable.name))), updatedVariable = factory.createVariableDeclaration(variable.name, variable.exclamationToken, variable.type, ts.visitNode(variable.initializer, visitor));
-                                    variables = ts.append(variables, updatedVariable), expressions = ts.append(expressions, expression), removeCommentsOnExpressions = !0;
-                                } else expressions = ts.append(expressions, ts.isBindingPattern(variable.name) ? ts.flattenDestructuringAssignment(ts.visitNode(variable, visitor), void 0, context, 0, !1, createAllExportExpressions) : factory.createAssignment(ts.setTextRange(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), variable.name), variable.name), variable.initializer ? ts.visitNode(variable.initializer, visitor) : factory.createVoidZero()));
+                                if (!ts1.isBindingPattern(variable.name) && (ts1.isArrowFunction(variable.initializer) || ts1.isFunctionExpression(variable.initializer) || ts1.isClassExpression(variable.initializer))) {
+                                    var expression = factory.createAssignment(ts1.setTextRange(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), variable.name), variable.name), factory.createIdentifier(ts1.getTextOfIdentifierOrLiteral(variable.name))), updatedVariable = factory.createVariableDeclaration(variable.name, variable.exclamationToken, variable.type, ts1.visitNode(variable.initializer, visitor));
+                                    variables = ts1.append(variables, updatedVariable), expressions = ts1.append(expressions, expression), removeCommentsOnExpressions = !0;
+                                } else expressions = ts1.append(expressions, ts1.isBindingPattern(variable.name) ? ts1.flattenDestructuringAssignment(ts1.visitNode(variable, visitor), void 0, context, 0, !1, createAllExportExpressions) : factory.createAssignment(ts1.setTextRange(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), variable.name), variable.name), variable.initializer ? ts1.visitNode(variable.initializer, visitor) : factory.createVoidZero()));
                             }
                         }
-                        if (variables && (statements = ts.append(statements, factory.updateVariableStatement(node, modifiers, factory.updateVariableDeclarationList(node.declarationList, variables)))), expressions) {
-                            var statement = ts.setOriginalNode(ts.setTextRange(factory.createExpressionStatement(factory.inlineExpressions(expressions)), node), node);
-                            removeCommentsOnExpressions && ts.removeAllComments(statement), statements = ts.append(statements, statement);
+                        if (variables && (statements = ts1.append(statements, factory.updateVariableStatement(node, modifiers, factory.updateVariableDeclarationList(node.declarationList, variables)))), expressions) {
+                            var statement = ts1.setOriginalNode(ts1.setTextRange(factory.createExpressionStatement(factory.inlineExpressions(expressions)), node), node);
+                            removeCommentsOnExpressions && ts1.removeAllComments(statement), statements = ts1.append(statements, statement);
                         }
-                    } else statements = ts.append(statements, ts.visitEachChild(node, visitor, context));
+                    } else statements = ts1.append(statements, ts1.visitEachChild(node, visitor, context));
                     if (hasAssociatedEndOfDeclarationMarker(node)) {
-                        var id = ts.getOriginalNodeId(node);
+                        var id = ts1.getOriginalNodeId(node);
                         deferredExports[id] = appendExportsOfVariableStatement(deferredExports[id], node);
                     } else statements = appendExportsOfVariableStatement(statements, node);
-                    return ts.singleOrMany(statements);
+                    return ts1.singleOrMany(statements);
                 }(node);
             case 255:
                 return function(node) {
                     var statements;
-                    if (statements = ts.hasSyntacticModifier(node, 1) ? ts.append(statements, ts.setOriginalNode(ts.setTextRange(factory.createFunctionDeclaration(void 0, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), node.asteriskToken, factory.getDeclarationName(node, !0, !0), void 0, ts.visitNodes(node.parameters, visitor), void 0, ts.visitEachChild(node.body, visitor, context)), node), node)) : ts.append(statements, ts.visitEachChild(node, visitor, context)), hasAssociatedEndOfDeclarationMarker(node)) {
-                        var id = ts.getOriginalNodeId(node);
+                    if (statements = ts1.hasSyntacticModifier(node, 1) ? ts1.append(statements, ts1.setOriginalNode(ts1.setTextRange(factory.createFunctionDeclaration(void 0, ts1.visitNodes(node.modifiers, modifierVisitor, ts1.isModifier), node.asteriskToken, factory.getDeclarationName(node, !0, !0), void 0, ts1.visitNodes(node.parameters, visitor), void 0, ts1.visitEachChild(node.body, visitor, context)), node), node)) : ts1.append(statements, ts1.visitEachChild(node, visitor, context)), hasAssociatedEndOfDeclarationMarker(node)) {
+                        var id = ts1.getOriginalNodeId(node);
                         deferredExports[id] = appendExportsOfHoistedDeclaration(deferredExports[id], node);
                     } else statements = appendExportsOfHoistedDeclaration(statements, node);
-                    return ts.singleOrMany(statements);
+                    return ts1.singleOrMany(statements);
                 }(node);
             case 256:
                 return function(node) {
                     var statements;
-                    if (statements = ts.hasSyntacticModifier(node, 1) ? ts.append(statements, ts.setOriginalNode(ts.setTextRange(factory.createClassDeclaration(void 0, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), factory.getDeclarationName(node, !0, !0), void 0, ts.visitNodes(node.heritageClauses, visitor), ts.visitNodes(node.members, visitor)), node), node)) : ts.append(statements, ts.visitEachChild(node, visitor, context)), hasAssociatedEndOfDeclarationMarker(node)) {
-                        var id = ts.getOriginalNodeId(node);
+                    if (statements = ts1.hasSyntacticModifier(node, 1) ? ts1.append(statements, ts1.setOriginalNode(ts1.setTextRange(factory.createClassDeclaration(void 0, ts1.visitNodes(node.modifiers, modifierVisitor, ts1.isModifier), factory.getDeclarationName(node, !0, !0), void 0, ts1.visitNodes(node.heritageClauses, visitor), ts1.visitNodes(node.members, visitor)), node), node)) : ts1.append(statements, ts1.visitEachChild(node, visitor, context)), hasAssociatedEndOfDeclarationMarker(node)) {
+                        var id = ts1.getOriginalNodeId(node);
                         deferredExports[id] = appendExportsOfHoistedDeclaration(deferredExports[id], node);
                     } else statements = appendExportsOfHoistedDeclaration(statements, node);
-                    return ts.singleOrMany(statements);
+                    return ts1.singleOrMany(statements);
                 }(node);
             case 350:
                 return function(node) {
                     if (hasAssociatedEndOfDeclarationMarker(node) && 236 === node.original.kind) {
-                        var id = ts.getOriginalNodeId(node);
+                        var id = ts1.getOriginalNodeId(node);
                         deferredExports[id] = appendExportsOfVariableStatement(deferredExports[id], node.original);
                     }
                     return node;
                 }(node);
             case 351:
                 var id, statements;
-                return (statements = deferredExports[id = ts.getOriginalNodeId(node)]) ? (delete deferredExports[id], ts.append(statements, node)) : node;
+                return (statements = deferredExports[id = ts1.getOriginalNodeId(node)]) ? (delete deferredExports[id], ts1.append(statements, node)) : node;
             default:
                 return visitor(node);
         }
@@ -299,37 +299,37 @@ var ts, dynamicImportUMDHelper;
         if (!(71307264 & node.transformFlags)) return node;
         switch(node.kind){
             case 241:
-                return factory.updateForStatement(node, ts.visitNode(node.initializer, discardedValueVisitor, ts.isForInitializer), ts.visitNode(node.condition, visitor, ts.isExpression), ts.visitNode(node.incrementor, discardedValueVisitor, ts.isExpression), ts.visitIterationBody(node.statement, visitor, context));
+                return factory.updateForStatement(node, ts1.visitNode(node.initializer, discardedValueVisitor, ts1.isForInitializer), ts1.visitNode(node.condition, visitor, ts1.isExpression), ts1.visitNode(node.incrementor, discardedValueVisitor, ts1.isExpression), ts1.visitIterationBody(node.statement, visitor, context));
             case 237:
-                return factory.updateExpressionStatement(node, ts.visitNode(node.expression, discardedValueVisitor, ts.isExpression));
+                return factory.updateExpressionStatement(node, ts1.visitNode(node.expression, discardedValueVisitor, ts1.isExpression));
             case 211:
-                return factory.updateParenthesizedExpression(node, ts.visitNode(node.expression, valueIsDiscarded ? discardedValueVisitor : visitor, ts.isExpression));
+                return factory.updateParenthesizedExpression(node, ts1.visitNode(node.expression, valueIsDiscarded ? discardedValueVisitor : visitor, ts1.isExpression));
             case 348:
-                return factory.updatePartiallyEmittedExpression(node, ts.visitNode(node.expression, valueIsDiscarded ? discardedValueVisitor : visitor, ts.isExpression));
+                return factory.updatePartiallyEmittedExpression(node, ts1.visitNode(node.expression, valueIsDiscarded ? discardedValueVisitor : visitor, ts1.isExpression));
             case 207:
-                if (ts.isImportCall(node) && void 0 === currentSourceFile.impliedNodeFormat) return function(node) {
-                    var externalModuleName = ts.getExternalModuleNameLiteral(factory, node, currentSourceFile, host, resolver, compilerOptions), firstArgument = ts.visitNode(ts.firstOrUndefined(node.arguments), visitor), argument = !externalModuleName || firstArgument && ts.isStringLiteral(firstArgument) && firstArgument.text === externalModuleName.text ? firstArgument : externalModuleName, containsLexicalThis = !!(8192 & node.transformFlags);
+                if (ts1.isImportCall(node) && void 0 === currentSourceFile.impliedNodeFormat) return function(node) {
+                    var externalModuleName = ts1.getExternalModuleNameLiteral(factory, node, currentSourceFile, host, resolver, compilerOptions), firstArgument = ts1.visitNode(ts1.firstOrUndefined(node.arguments), visitor), argument = !externalModuleName || firstArgument && ts1.isStringLiteral(firstArgument) && firstArgument.text === externalModuleName.text ? firstArgument : externalModuleName, containsLexicalThis = !!(8192 & node.transformFlags);
                     switch(compilerOptions.module){
-                        case ts.ModuleKind.AMD:
+                        case ts1.ModuleKind.AMD:
                             return createImportCallExpressionAMD(argument, containsLexicalThis);
-                        case ts.ModuleKind.UMD:
+                        case ts1.ModuleKind.UMD:
                             return function(arg, containsLexicalThis) {
-                                if (needUMDDynamicImportHelper = !0, ts.isSimpleCopiableExpression(arg)) {
-                                    var argClone = ts.isGeneratedIdentifier(arg) ? arg : ts.isStringLiteral(arg) ? factory.createStringLiteralFromNode(arg) : ts.setEmitFlags(ts.setTextRange(factory.cloneNode(arg), arg), 1536);
+                                if (needUMDDynamicImportHelper = !0, ts1.isSimpleCopiableExpression(arg)) {
+                                    var argClone = ts1.isGeneratedIdentifier(arg) ? arg : ts1.isStringLiteral(arg) ? factory.createStringLiteralFromNode(arg) : ts1.setEmitFlags(ts1.setTextRange(factory.cloneNode(arg), arg), 1536);
                                     return factory.createConditionalExpression(factory.createIdentifier("__syncRequire"), void 0, createImportCallExpressionCommonJS(arg, containsLexicalThis), void 0, createImportCallExpressionAMD(argClone, containsLexicalThis));
                                 }
                                 var temp = factory.createTempVariable(hoistVariableDeclaration);
                                 return factory.createComma(factory.createAssignment(temp, arg), factory.createConditionalExpression(factory.createIdentifier("__syncRequire"), void 0, createImportCallExpressionCommonJS(temp, containsLexicalThis), void 0, createImportCallExpressionAMD(temp, containsLexicalThis)));
                             }(null != argument ? argument : factory.createVoidZero(), containsLexicalThis);
-                        case ts.ModuleKind.CommonJS:
+                        case ts1.ModuleKind.CommonJS:
                         default:
                             return createImportCallExpressionCommonJS(argument, containsLexicalThis);
                     }
                 }(node);
                 break;
             case 220:
-                if (ts.isDestructuringAssignment(node)) return !function destructuringNeedsFlattening(node) {
-                    if (ts.isObjectLiteralExpression(node)) for(var _i = 0, _a = node.properties; _i < _a.length; _i++){
+                if (ts1.isDestructuringAssignment(node)) return !function destructuringNeedsFlattening(node) {
+                    if (ts1.isObjectLiteralExpression(node)) for(var _i = 0, _a = node.properties; _i < _a.length; _i++){
                         var elem = _a[_i];
                         switch(elem.kind){
                             case 294:
@@ -346,38 +346,38 @@ var ts, dynamicImportUMDHelper;
                             case 172:
                                 return !1;
                             default:
-                                ts.Debug.assertNever(elem, "Unhandled object member kind");
+                                ts1.Debug.assertNever(elem, "Unhandled object member kind");
                         }
                     }
-                    else if (ts.isArrayLiteralExpression(node)) for(var _b = 0, _c = node.elements; _b < _c.length; _b++){
+                    else if (ts1.isArrayLiteralExpression(node)) for(var _b = 0, _c = node.elements; _b < _c.length; _b++){
                         var elem = _c[_b];
-                        if (ts.isSpreadElement(elem)) {
+                        if (ts1.isSpreadElement(elem)) {
                             if (destructuringNeedsFlattening(elem.expression)) return !0;
                         } else if (destructuringNeedsFlattening(elem)) return !0;
                     }
-                    else if (ts.isIdentifier(node)) return ts.length(getExports(node)) > (ts.isExportName(node) ? 1 : 0);
+                    else if (ts1.isIdentifier(node)) return ts1.length(getExports(node)) > (ts1.isExportName(node) ? 1 : 0);
                     return !1;
-                }(node.left) ? ts.visitEachChild(node, visitor, context) : ts.flattenDestructuringAssignment(node, visitor, context, 0, !valueIsDiscarded, createAllExportExpressions);
+                }(node.left) ? ts1.visitEachChild(node, visitor, context) : ts1.flattenDestructuringAssignment(node, visitor, context, 0, !valueIsDiscarded, createAllExportExpressions);
                 break;
             case 218:
             case 219:
                 return function(node, valueIsDiscarded) {
-                    if ((45 === node.operator || 46 === node.operator) && ts.isIdentifier(node.operand) && !ts.isGeneratedIdentifier(node.operand) && !ts.isLocalName(node.operand) && !ts.isDeclarationNameOfEnumOrNamespace(node.operand)) {
+                    if ((45 === node.operator || 46 === node.operator) && ts1.isIdentifier(node.operand) && !ts1.isGeneratedIdentifier(node.operand) && !ts1.isLocalName(node.operand) && !ts1.isDeclarationNameOfEnumOrNamespace(node.operand)) {
                         var exportedNames = getExports(node.operand);
                         if (exportedNames) {
-                            var temp = void 0, expression = ts.visitNode(node.operand, visitor, ts.isExpression);
-                            ts.isPrefixUnaryExpression(node) ? expression = factory.updatePrefixUnaryExpression(node, expression) : (expression = factory.updatePostfixUnaryExpression(node, expression), valueIsDiscarded || (temp = factory.createTempVariable(hoistVariableDeclaration), expression = factory.createAssignment(temp, expression), ts.setTextRange(expression, node)), expression = factory.createComma(expression, factory.cloneNode(node.operand)), ts.setTextRange(expression, node));
+                            var temp = void 0, expression = ts1.visitNode(node.operand, visitor, ts1.isExpression);
+                            ts1.isPrefixUnaryExpression(node) ? expression = factory.updatePrefixUnaryExpression(node, expression) : (expression = factory.updatePostfixUnaryExpression(node, expression), valueIsDiscarded || (temp = factory.createTempVariable(hoistVariableDeclaration), expression = factory.createAssignment(temp, expression), ts1.setTextRange(expression, node)), expression = factory.createComma(expression, factory.cloneNode(node.operand)), ts1.setTextRange(expression, node));
                             for(var _i = 0; _i < exportedNames.length; _i++){
                                 var exportName = exportedNames[_i];
-                                noSubstitution[ts.getNodeId(expression)] = !0, expression = createExportExpression(exportName, expression), ts.setTextRange(expression, node);
+                                noSubstitution[ts1.getNodeId(expression)] = !0, expression = createExportExpression(exportName, expression), ts1.setTextRange(expression, node);
                             }
-                            return temp && (noSubstitution[ts.getNodeId(expression)] = !0, expression = factory.createComma(expression, temp), ts.setTextRange(expression, node)), expression;
+                            return temp && (noSubstitution[ts1.getNodeId(expression)] = !0, expression = factory.createComma(expression, temp), ts1.setTextRange(expression, node)), expression;
                         }
                     }
-                    return ts.visitEachChild(node, visitor, context);
+                    return ts1.visitEachChild(node, visitor, context);
                 }(node, valueIsDiscarded);
         }
-        return ts.visitEachChild(node, visitor, context);
+        return ts1.visitEachChild(node, visitor, context);
     }
     function visitor(node) {
         return visitorWorker(node, !1);
@@ -398,11 +398,11 @@ var ts, dynamicImportUMDHelper;
                 reject
             ]))
         ]);
-        languageVersion >= 2 ? func = factory.createArrowFunction(void 0, void 0, parameters, void 0, void 0, body) : (func = factory.createFunctionExpression(void 0, void 0, void 0, void 0, parameters, void 0, body), containsLexicalThis && ts.setEmitFlags(func, 8));
+        languageVersion >= 2 ? func = factory.createArrowFunction(void 0, void 0, parameters, void 0, void 0, body) : (func = factory.createFunctionExpression(void 0, void 0, void 0, void 0, parameters, void 0, body), containsLexicalThis && ts1.setEmitFlags(func, 8));
         var promise = factory.createNewExpression(factory.createIdentifier("Promise"), void 0, [
             func
         ]);
-        return ts.getESModuleInterop(compilerOptions) ? factory.createCallExpression(factory.createPropertyAccessExpression(promise, factory.createIdentifier("then")), void 0, [
+        return ts1.getESModuleInterop(compilerOptions) ? factory.createCallExpression(factory.createPropertyAccessExpression(promise, factory.createIdentifier("then")), void 0, [
             emitHelpers().createImportStarCallbackHelper()
         ]) : promise;
     }
@@ -410,32 +410,32 @@ var ts, dynamicImportUMDHelper;
         var func, promiseResolveCall = factory.createCallExpression(factory.createPropertyAccessExpression(factory.createIdentifier("Promise"), "resolve"), void 0, []), requireCall = factory.createCallExpression(factory.createIdentifier("require"), void 0, arg ? [
             arg
         ] : []);
-        return ts.getESModuleInterop(compilerOptions) && (requireCall = emitHelpers().createImportStarHelper(requireCall)), languageVersion >= 2 ? func = factory.createArrowFunction(void 0, void 0, [], void 0, void 0, requireCall) : (func = factory.createFunctionExpression(void 0, void 0, void 0, void 0, [], void 0, factory.createBlock([
+        return ts1.getESModuleInterop(compilerOptions) && (requireCall = emitHelpers().createImportStarHelper(requireCall)), languageVersion >= 2 ? func = factory.createArrowFunction(void 0, void 0, [], void 0, void 0, requireCall) : (func = factory.createFunctionExpression(void 0, void 0, void 0, void 0, [], void 0, factory.createBlock([
             factory.createReturnStatement(requireCall)
-        ])), containsLexicalThis && ts.setEmitFlags(func, 8)), factory.createCallExpression(factory.createPropertyAccessExpression(promiseResolveCall, "then"), void 0, [
+        ])), containsLexicalThis && ts1.setEmitFlags(func, 8)), factory.createCallExpression(factory.createPropertyAccessExpression(promiseResolveCall, "then"), void 0, [
             func
         ]);
     }
     function getHelperExpressionForImport(node, innerExpr) {
-        return !ts.getESModuleInterop(compilerOptions) || 67108864 & ts.getEmitFlags(node) ? innerExpr : ts.getImportNeedsImportStarHelper(node) ? emitHelpers().createImportStarHelper(innerExpr) : ts.getImportNeedsImportDefaultHelper(node) ? emitHelpers().createImportDefaultHelper(innerExpr) : innerExpr;
+        return !ts1.getESModuleInterop(compilerOptions) || 67108864 & ts1.getEmitFlags(node) ? innerExpr : ts1.getImportNeedsImportStarHelper(node) ? emitHelpers().createImportStarHelper(innerExpr) : ts1.getImportNeedsImportDefaultHelper(node) ? emitHelpers().createImportDefaultHelper(innerExpr) : innerExpr;
     }
     function createRequireCall(importNode) {
-        var moduleName = ts.getExternalModuleNameLiteral(factory, importNode, currentSourceFile, host, resolver, compilerOptions), args = [];
+        var moduleName = ts1.getExternalModuleNameLiteral(factory, importNode, currentSourceFile, host, resolver, compilerOptions), args = [];
         return moduleName && args.push(moduleName), factory.createCallExpression(factory.createIdentifier("require"), void 0, args);
     }
     function createAllExportExpressions(name, value, location) {
         var exportedNames = getExports(name);
         if (exportedNames) {
-            for(var expression = ts.isExportName(name) ? value : factory.createAssignment(name, value), _i = 0; _i < exportedNames.length; _i++){
+            for(var expression = ts1.isExportName(name) ? value : factory.createAssignment(name, value), _i = 0; _i < exportedNames.length; _i++){
                 var exportName = exportedNames[_i];
-                ts.setEmitFlags(expression, 4), expression = createExportExpression(exportName, expression, location);
+                ts1.setEmitFlags(expression, 4), expression = createExportExpression(exportName, expression, location);
             }
             return expression;
         }
         return factory.createAssignment(name, value);
     }
     function hasAssociatedEndOfDeclarationMarker(node) {
-        return (4194304 & ts.getEmitFlags(node)) != 0;
+        return (4194304 & ts1.getEmitFlags(node)) != 0;
     }
     function appendExportsOfImportDeclaration(statements, decl) {
         if (currentModuleInfo.exportEquals) return statements;
@@ -459,20 +459,20 @@ var ts, dynamicImportUMDHelper;
         if (currentModuleInfo.exportEquals) return statements;
         for(var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++)statements = function appendExportsOfBindingElement(statements, decl) {
             if (currentModuleInfo.exportEquals) return statements;
-            if (ts.isBindingPattern(decl.name)) for(var _i = 0, _a = decl.name.elements; _i < _a.length; _i++){
+            if (ts1.isBindingPattern(decl.name)) for(var _i = 0, _a = decl.name.elements; _i < _a.length; _i++){
                 var element = _a[_i];
-                ts.isOmittedExpression(element) || (statements = appendExportsOfBindingElement(statements, element));
+                ts1.isOmittedExpression(element) || (statements = appendExportsOfBindingElement(statements, element));
             }
-            else ts.isGeneratedIdentifier(decl.name) || (statements = appendExportsOfDeclaration(statements, decl));
+            else ts1.isGeneratedIdentifier(decl.name) || (statements = appendExportsOfDeclaration(statements, decl));
             return statements;
         }(statements, _a[_i]);
         return statements;
     }
     function appendExportsOfHoistedDeclaration(statements, decl) {
-        return currentModuleInfo.exportEquals || (ts.hasSyntacticModifier(decl, 1) && (statements = appendExportStatement(statements, ts.hasSyntacticModifier(decl, 512) ? factory.createIdentifier("default") : factory.getDeclarationName(decl), factory.getLocalName(decl), decl)), decl.name && (statements = appendExportsOfDeclaration(statements, decl))), statements;
+        return currentModuleInfo.exportEquals || (ts1.hasSyntacticModifier(decl, 1) && (statements = appendExportStatement(statements, ts1.hasSyntacticModifier(decl, 512) ? factory.createIdentifier("default") : factory.getDeclarationName(decl), factory.getLocalName(decl), decl)), decl.name && (statements = appendExportsOfDeclaration(statements, decl))), statements;
     }
     function appendExportsOfDeclaration(statements, decl, liveBinding) {
-        var name = factory.getDeclarationName(decl), exportSpecifiers = currentModuleInfo.exportSpecifiers.get(ts.idText(name));
+        var name = factory.getDeclarationName(decl), exportSpecifiers = currentModuleInfo.exportSpecifiers.get(ts1.idText(name));
         if (exportSpecifiers) for(var _i = 0; _i < exportSpecifiers.length; _i++){
             var exportSpecifier = exportSpecifiers[_i];
             statements = appendExportStatement(statements, exportSpecifier.name, name, exportSpecifier.name, void 0, liveBinding);
@@ -481,7 +481,7 @@ var ts, dynamicImportUMDHelper;
     }
     function appendExportStatement(statements, exportName, expression, location, allowComments, liveBinding) {
         var statement;
-        return statements = ts.append(statements, (statement = ts.setTextRange(factory.createExpressionStatement(createExportExpression(exportName, expression, void 0, liveBinding)), location), ts.startOnNewLine(statement), allowComments || ts.setEmitFlags(statement, 1536), statement));
+        return statements = ts1.append(statements, (statement = ts1.setTextRange(factory.createExpressionStatement(createExportExpression(exportName, expression, void 0, liveBinding)), location), ts1.startOnNewLine(statement), allowComments || ts1.setEmitFlags(statement, 1536), statement));
     }
     function createUnderscoreUnderscoreESModule() {
         var statement;
@@ -491,10 +491,10 @@ var ts, dynamicImportUMDHelper;
             factory.createObjectLiteralExpression([
                 factory.createPropertyAssignment("value", factory.createTrue())
             ])
-        ])), ts.setEmitFlags(statement, 1048576), statement;
+        ])), ts1.setEmitFlags(statement, 1048576), statement;
     }
     function createExportExpression(name, value, location, liveBinding) {
-        return ts.setTextRange(liveBinding && 0 !== languageVersion ? factory.createCallExpression(factory.createPropertyAccessExpression(factory.createIdentifier("Object"), "defineProperty"), void 0, [
+        return ts1.setTextRange(liveBinding && 0 !== languageVersion ? factory.createCallExpression(factory.createPropertyAccessExpression(factory.createIdentifier("Object"), "defineProperty"), void 0, [
             factory.createIdentifier("exports"),
             factory.createStringLiteralFromNode(name),
             factory.createObjectLiteralExpression([
@@ -515,27 +515,27 @@ var ts, dynamicImportUMDHelper;
     }
     function substituteExpressionIdentifier(node) {
         var _a, _b;
-        if (4096 & ts.getEmitFlags(node)) {
-            var externalHelpersModuleName = ts.getExternalHelpersModuleName(currentSourceFile);
+        if (4096 & ts1.getEmitFlags(node)) {
+            var externalHelpersModuleName = ts1.getExternalHelpersModuleName(currentSourceFile);
             if (externalHelpersModuleName) return factory.createPropertyAccessExpression(externalHelpersModuleName, node);
-        } else if (!(ts.isGeneratedIdentifier(node) && !(64 & node.autoGenerateFlags)) && !ts.isLocalName(node)) {
-            var exportContainer = resolver.getReferencedExportContainer(node, ts.isExportName(node));
-            if (exportContainer && 303 === exportContainer.kind) return ts.setTextRange(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), factory.cloneNode(node)), node);
+        } else if (!(ts1.isGeneratedIdentifier(node) && !(64 & node.autoGenerateFlags)) && !ts1.isLocalName(node)) {
+            var exportContainer = resolver.getReferencedExportContainer(node, ts1.isExportName(node));
+            if (exportContainer && 303 === exportContainer.kind) return ts1.setTextRange(factory.createPropertyAccessExpression(factory.createIdentifier("exports"), factory.cloneNode(node)), node);
             var importDeclaration = resolver.getReferencedImportDeclaration(node);
             if (importDeclaration) {
-                if (ts.isImportClause(importDeclaration)) return ts.setTextRange(factory.createPropertyAccessExpression(factory.getGeneratedNameForNode(importDeclaration.parent), factory.createIdentifier("default")), node);
-                if (ts.isImportSpecifier(importDeclaration)) {
+                if (ts1.isImportClause(importDeclaration)) return ts1.setTextRange(factory.createPropertyAccessExpression(factory.getGeneratedNameForNode(importDeclaration.parent), factory.createIdentifier("default")), node);
+                if (ts1.isImportSpecifier(importDeclaration)) {
                     var name = importDeclaration.propertyName || importDeclaration.name;
-                    return ts.setTextRange(factory.createPropertyAccessExpression(factory.getGeneratedNameForNode((null === (_b = null === (_a = importDeclaration.parent) || void 0 === _a ? void 0 : _a.parent) || void 0 === _b ? void 0 : _b.parent) || importDeclaration), factory.cloneNode(name)), node);
+                    return ts1.setTextRange(factory.createPropertyAccessExpression(factory.getGeneratedNameForNode((null === (_b = null === (_a = importDeclaration.parent) || void 0 === _a ? void 0 : _a.parent) || void 0 === _b ? void 0 : _b.parent) || importDeclaration), factory.cloneNode(name)), node);
                 }
             }
         }
         return node;
     }
     function getExports(name) {
-        if (!ts.isGeneratedIdentifier(name)) {
+        if (!ts1.isGeneratedIdentifier(name)) {
             var valueDeclaration = resolver.getReferencedImportDeclaration(name) || resolver.getReferencedValueDeclaration(name);
-            if (valueDeclaration) return currentModuleInfo && currentModuleInfo.exportedBindings[ts.getOriginalNodeId(valueDeclaration)];
+            if (valueDeclaration) return currentModuleInfo && currentModuleInfo.exportedBindings[ts1.getOriginalNodeId(valueDeclaration)];
         }
     }
 }, dynamicImportUMDHelper = {
diff --git a/crates/swc_ecma_minifier/tests/fixture/next/feedback-2/codemirror/output.js b/crates/swc_ecma_minifier/tests/fixture/next/feedback-2/codemirror/output.js
index 802078d5349c..544f5c237149 100644
--- a/crates/swc_ecma_minifier/tests/fixture/next/feedback-2/codemirror/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/next/feedback-2/codemirror/output.js
@@ -3365,7 +3365,7 @@
             return doc.scrollTop = this.scrollTop, doc.scrollLeft = this.scrollLeft, doc.sel = this.sel, doc.extend = !1, copyHistory && (doc.history.undoDepth = this.history.undoDepth, doc.setHistory(this.getHistory())), doc;
         },
         linkedDoc: function(options) {
-            options = {};
+            options || (options = {});
             var from = this.first, to = this.first + this.size;
             null != options.from && options.from > from && (from = options.from), null != options.to && options.to < to && (to = options.to);
             var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);
diff --git a/crates/swc_ecma_minifier/tests/fixture/next/react-ace/chunks/8a28b14e.d8fbda268ed281a1/output.js b/crates/swc_ecma_minifier/tests/fixture/next/react-ace/chunks/8a28b14e.d8fbda268ed281a1/output.js
index 51d6ed54d7f4..d03c5ead9f3c 100644
--- a/crates/swc_ecma_minifier/tests/fixture/next/react-ace/chunks/8a28b14e.d8fbda268ed281a1/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/next/react-ace/chunks/8a28b14e.d8fbda268ed281a1/output.js
@@ -8632,7 +8632,7 @@
                     }, this.getLastSearchOptions = function() {
                         return this.$search.getOptions();
                     }, this.find = function(needle, options, animate) {
-                        options = {}, "string" == typeof needle || needle instanceof RegExp ? options.needle = needle : "object" == typeof needle && oop.mixin(options, needle);
+                        options || (options = {}), "string" == typeof needle || needle instanceof RegExp ? options.needle = needle : "object" == typeof needle && oop.mixin(options, needle);
                         var range = this.selection.getRange();
                         null == options.needle && ((needle = this.session.getTextRange(range) || this.$search.$options.needle) || (range = this.session.getWordRange(range.start.row, range.start.column), needle = this.session.getTextRange(range)), this.$search.set({
                             needle: needle
diff --git a/crates/swc_ecma_minifier/tests/fixture/next/react-pdf-renderer/output.js b/crates/swc_ecma_minifier/tests/fixture/next/react-pdf-renderer/output.js
index 99546e1ee948..7449e159f63d 100644
--- a/crates/swc_ecma_minifier/tests/fixture/next/react-pdf-renderer/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/next/react-pdf-renderer/output.js
@@ -8442,7 +8442,7 @@
                     }), t;
                 }
                 function v(e, t) {
-                    t = {}, this.type = "default", this.status = void 0 === t.status ? 200 : t.status, this.ok = this.status >= 200 && this.status < 300, this.statusText = "statusText" in t ? t.statusText : "OK", this.headers = new l(t.headers), this.url = t.url || "", this._initBody(e);
+                    t || (t = {}), this.type = "default", this.status = void 0 === t.status ? 200 : t.status, this.ok = this.status >= 200 && this.status < 300, this.statusText = "statusText" in t ? t.statusText : "OK", this.headers = new l(t.headers), this.url = t.url || "", this._initBody(e);
                 }
                 y.prototype.clone = function() {
                     return new y(this, {
@@ -21710,7 +21710,7 @@
                         function i() {}
                         e.exports = function e(t, r, o) {
                             if ("function" == typeof r) return e(t, null, r);
-                            r = {}, a = o || i, u = !1, o = function() {
+                            r || (r = {}), a = o || i, u = !1, o = function() {
                                 if (!u) {
                                     u = !0;
                                     for(var e = arguments.length, t = Array(e), r = 0; r < e; r++)t[r] = arguments[r];
diff --git a/crates/swc_ecma_minifier/tests/fixture/next/syncfusion/933-e9f9a6bf671b96fc/output.js b/crates/swc_ecma_minifier/tests/fixture/next/syncfusion/933-e9f9a6bf671b96fc/output.js
index 154fe3f8d220..9d1538617621 100644
--- a/crates/swc_ecma_minifier/tests/fixture/next/syncfusion/933-e9f9a6bf671b96fc/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/next/syncfusion/933-e9f9a6bf671b96fc/output.js
@@ -2243,7 +2243,7 @@
                 79930,
                 79960,
                 79990
-            ], (HijriParser = HijriParser1 = {}).getHijriDate = function(gDate) {
+            ], (HijriParser = HijriParser1 || (HijriParser1 = {})).getHijriDate = function(gDate) {
                 var day = gDate.getDate(), month = gDate.getMonth(), year = gDate.getFullYear(), tMonth = month + 1, tYear = year;
                 tMonth < 3 && (tYear -= 1, tMonth += 12);
                 var yPrefix = Math.floor(tYear / 100.), julilanOffset = yPrefix - Math.floor(yPrefix / 4.) - 2, julianNumber = Math.floor(365.25 * (tYear + 4716)) + Math.floor(30.6001 * (tMonth + 1)) + day - julilanOffset - 1524;
@@ -3614,7 +3614,7 @@
                     } else weeknum = Math.floor((daynum + day - 1) / 7);
                     return weeknum;
                 };
-            }(intl_base_IntlBase = {});
+            }(intl_base_IntlBase || (intl_base_IntlBase = {}));
             var headerRegex = /^(.*?):[ \t]*([^\r\n]*)$/gm, Ajax = function() {
                 function Ajax(options, type, async, contentType) {
                     this.mode = !0, this.emitError = !0, this.options = {}, 'string' == typeof options ? (this.url = options, this.type = type ? type.toUpperCase() : 'GET', this.mode = !!util_isNullOrUndefined(async) || async) : 'object' == typeof options && (this.options = options, util_merge(this, this.options)), this.type = this.type ? this.type.toUpperCase() : 'GET', this.contentType = void 0 !== this.contentType ? this.contentType : contentType;
@@ -6290,7 +6290,7 @@
                     }
                     container.getElementsByClassName('e-input-group-icon')[0] && container.getElementsByClassName('e-float-text-overflow')[0] && container.getElementsByClassName('e-float-text-overflow')[0].classList.add('e-icon');
                 }, Input.prependSpan = prependSpan, Input.appendSpan = appendSpan, Input.validateInputType = validateInputType;
-            }(Input = {});
+            }(Input || (Input = {}));
         },
         8801: function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {
             "use strict";
@@ -8007,7 +8007,7 @@
                     return RichTextEditorComponent;
                 }
             });
-            var extendStatics, extendStatics1, extendStatics2, extendStatics3, extendStatics4, extendStatics5, extendStatics6, extendStatics7, extendStatics8, extendStatics9, extendStatics10, extendStatics11, extendStatics12, extendStatics13, targetElement, selectedHandler, minHeight, maxHeight, minWidth, maxWidth, containerElement, resizeWestWidth, proxy, react = __webpack_require__(7294), ej2_base = __webpack_require__(1807), popup = __webpack_require__(9486), constant = __webpack_require__(3386), classes = __webpack_require__(9805), base_enum = __webpack_require__(809), Render = function() {
+            var extendStatics, extendStatics1, extendStatics2, extendStatics3, extendStatics4, extendStatics5, extendStatics6, extendStatics7, extendStatics8, extendStatics9, extendStatics10, extendStatics11, extendStatics12, extendStatics13, targetElement, selectedHandler, minHeight, maxHeight, minWidth, maxWidth, containerElement, resizeWestWidth, proxy, DialogUtility, react = __webpack_require__(7294), ej2_base = __webpack_require__(1807), popup = __webpack_require__(9486), constant = __webpack_require__(3386), classes = __webpack_require__(9805), base_enum = __webpack_require__(809), Render = function() {
                 function Render(parent, locator) {
                     this.parent = parent, this.locator = locator, this.renderer = this.locator.getService('rendererFactory'), this.addEventListener();
                 }
@@ -10450,7 +10450,7 @@
                         args && args.close && args.close.apply(confirmDialogObj), confirmDialogObj.destroy(), confirmDialogObj.element.classList.contains('e-dlg-modal') ? (confirmDialogObj.element.parentElement.remove(), confirmDialogObj.target.classList.remove(DLG_UTIL_ROOT)) : confirmDialogObj.element.remove();
                     }, confirmDialogObj;
                 };
-            }({});
+            }(DialogUtility || (DialogUtility = {}));
             var DialogRenderer = function() {
                 function DialogRenderer(parent) {
                     this.parent = parent, this.addEventListener();
@@ -24993,7 +24993,7 @@
                 y2: function() {
                     return RenderType;
                 }
-            }), (RenderType1 = RenderType = {})[RenderType1.Toolbar = 0] = "Toolbar", RenderType1[RenderType1.Content = 1] = "Content", RenderType1[RenderType1.Popup = 2] = "Popup", RenderType1[RenderType1.LinkToolbar = 3] = "LinkToolbar", RenderType1[RenderType1.TextToolbar = 4] = "TextToolbar", RenderType1[RenderType1.ImageToolbar = 5] = "ImageToolbar", RenderType1[RenderType1.InlineToolbar = 6] = "InlineToolbar", RenderType1[RenderType1.TableToolbar = 7] = "TableToolbar", (ToolbarType1 = ToolbarType = {}).Expand = "Expand", ToolbarType1.MultiRow = "MultiRow", ToolbarType1.Scrollable = "Scrollable", (DialogType1 = DialogType = {}).InsertLink = "InsertLink", DialogType1.InsertImage = "InsertImage", DialogType1.InsertTable = "InsertTable";
+            }), (RenderType1 = RenderType || (RenderType = {}))[RenderType1.Toolbar = 0] = "Toolbar", RenderType1[RenderType1.Content = 1] = "Content", RenderType1[RenderType1.Popup = 2] = "Popup", RenderType1[RenderType1.LinkToolbar = 3] = "LinkToolbar", RenderType1[RenderType1.TextToolbar = 4] = "TextToolbar", RenderType1[RenderType1.ImageToolbar = 5] = "ImageToolbar", RenderType1[RenderType1.InlineToolbar = 6] = "InlineToolbar", RenderType1[RenderType1.TableToolbar = 7] = "TableToolbar", (ToolbarType1 = ToolbarType || (ToolbarType = {})).Expand = "Expand", ToolbarType1.MultiRow = "MultiRow", ToolbarType1.Scrollable = "Scrollable", (DialogType1 = DialogType || (DialogType = {})).InsertLink = "InsertLink", DialogType1.InsertImage = "InsertImage", DialogType1.InsertTable = "InsertTable";
         },
         5932: function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {
             "use strict";
diff --git a/crates/swc_ecma_minifier/tests/fixture/next/wrap-contracts/output.js b/crates/swc_ecma_minifier/tests/fixture/next/wrap-contracts/output.js
index c3a8046dca8b..e60d03232566 100644
--- a/crates/swc_ecma_minifier/tests/fixture/next/wrap-contracts/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/next/wrap-contracts/output.js
@@ -10379,7 +10379,7 @@
             }, EC.prototype.keyFromPublic = function(pub, enc) {
                 return KeyPair.fromPublic(this, pub, enc);
             }, EC.prototype.genKeyPair = function(options) {
-                options = {};
+                options || (options = {});
                 for(var drbg = new HmacDRBG({
                     hash: this.hash,
                     pers: options.pers,
@@ -15155,7 +15155,7 @@
             var assignValue = __webpack_require__(4865), baseAssignValue = __webpack_require__(9465);
             function copyObject(source, props, object, customizer) {
                 var isNew = !object;
-                object = {};
+                object || (object = {});
                 for(var index = -1, length = props.length; ++index < length;){
                     var key = props[index], newValue = customizer ? customizer(object[key], source[key], key, object, source) : void 0;
                     void 0 === newValue && (newValue = source[key]), isNew ? baseAssignValue(object, key, newValue) : assignValue(object, key, newValue);
@@ -17054,7 +17054,7 @@
                         }
                         function eos(e, t, r) {
                             if ("function" == typeof t) return eos(e, null, t);
-                            t = {}, r = once(r || noop);
+                            t || (t = {}), r = once(r || noop);
                             var i = t.readable || !1 !== t.readable && e.readable, a = t.writable || !1 !== t.writable && e.writable, o = function() {
                                 e.writable || f();
                             }, s = e._writableState && e._writableState.finished, f = function() {
diff --git a/crates/swc_ecma_minifier/tests/fixture/projects/backbone/16/output.js b/crates/swc_ecma_minifier/tests/fixture/projects/backbone/16/output.js
index 9e2d7099b7af..ad62d847beb7 100644
--- a/crates/swc_ecma_minifier/tests/fixture/projects/backbone/16/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/projects/backbone/16/output.js
@@ -1,9 +1,9 @@
 export const obj = {
     remove: function(models, options) {
         var i, l, index, model, singular = !_.isArray(models);
-        for(i = 0, models = singular ? [
+        for(models = singular ? [
             models
-        ] : _.clone(models), options = {}, l = models.length; i < l; i++)(model = models[i] = this.get(models[i])) && (delete this._byId[model.id], delete this._byId[model.cid], index = this.indexOf(model), this.models.splice(index, 1), this.length--, options.silent || (options.index = index, model.trigger("remove", model, this, options)), this._removeReference(model));
+        ] : _.clone(models), options || (options = {}), i = 0, l = models.length; i < l; i++)(model = models[i] = this.get(models[i])) && (delete this._byId[model.id], delete this._byId[model.cid], index = this.indexOf(model), this.models.splice(index, 1), this.length--, options.silent || (options.index = index, model.trigger("remove", model, this, options)), this._removeReference(model));
         return singular ? models[0] : models;
     }
 };
diff --git a/crates/swc_ecma_minifier/tests/fixture/projects/underscore/8/output.js b/crates/swc_ecma_minifier/tests/fixture/projects/underscore/8/output.js
index 360b4a7c760e..8d477bd33caf 100644
--- a/crates/swc_ecma_minifier/tests/fixture/projects/underscore/8/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/projects/underscore/8/output.js
@@ -1,6 +1,6 @@
 _.throttle = function(func, wait, options) {
     var context, args, result, timeout = null, previous = 0;
-    options = {};
+    options || (options = {});
     var later = function() {
         previous = !1 === options.leading ? 0 : new Date(), timeout = null, result = func.apply(context, args);
     };
diff --git a/crates/swc_ecma_minifier/tests/fixture/reduced/1/output.js b/crates/swc_ecma_minifier/tests/fixture/reduced/1/output.js
index 7be9bca55828..102d35521d05 100644
--- a/crates/swc_ecma_minifier/tests/fixture/reduced/1/output.js
+++ b/crates/swc_ecma_minifier/tests/fixture/reduced/1/output.js
@@ -1,4 +1,4 @@
-var A, A2;
+var A, B, A2;
 ((A2 = A || (A = {})).Point || (A2.Point = {})).Origin = {
     x: 0,
     y: 0
@@ -18,4 +18,4 @@ var A, A2;
         x: 0,
         y: 0
     }, B1.Point = Point1;
-}({});
+}(B || (B = {}));
diff --git a/crates/swc_ecma_minifier/tests/projects/output/backbone-1.1.0.js b/crates/swc_ecma_minifier/tests/projects/output/backbone-1.1.0.js
index 38d1f2d01dd2..84e273aaa6ce 100644
--- a/crates/swc_ecma_minifier/tests/projects/output/backbone-1.1.0.js
+++ b/crates/swc_ecma_minifier/tests/projects/output/backbone-1.1.0.js
@@ -100,7 +100,7 @@
     }), Events.bind = Events.on, Events.unbind = Events.off, _.extend(Backbone, Events);
     var Model = Backbone.Model = function(attributes, options) {
         var attrs = attributes || {};
-        options = {}, this.cid = _.uniqueId("c"), this.attributes = {}, options.collection && (this.collection = options.collection), options.parse && (attrs = this.parse(attrs, options) || {}), attrs = _.defaults({}, attrs, _.result(this, "defaults")), this.set(attrs, options), this.changed = {}, this.initialize.apply(this, arguments);
+        options || (options = {}), this.cid = _.uniqueId("c"), this.attributes = {}, options.collection && (this.collection = options.collection), options.parse && (attrs = this.parse(attrs, options) || {}), attrs = _.defaults({}, attrs, _.result(this, "defaults")), this.set(attrs, options), this.changed = {}, this.initialize.apply(this, arguments);
     };
     _.extend(Model.prototype, Events, {
         changed: null,
@@ -238,7 +238,7 @@
         };
     });
     var Collection = Backbone.Collection = function(models, options) {
-        (options = {}).model && (this.model = options.model), void 0 !== options.comparator && (this.comparator = options.comparator), this._reset(), this.initialize.apply(this, arguments), models && this.reset(models, _.extend({
+        options || (options = {}), options.model && (this.model = options.model), void 0 !== options.comparator && (this.comparator = options.comparator), this._reset(), this.initialize.apply(this, arguments), models && this.reset(models, _.extend({
             silent: !0
         }, options));
     }, setOptions = {
@@ -267,9 +267,9 @@
         },
         remove: function(models, options) {
             var i, l, index, model, singular = !_.isArray(models);
-            for(i = 0, models = singular ? [
+            for(models = singular ? [
                 models
-            ] : _.clone(models), options = {}, l = models.length; i < l; i++)(model = models[i] = this.get(models[i])) && (delete this._byId[model.id], delete this._byId[model.cid], index = this.indexOf(model), this.models.splice(index, 1), this.length--, options.silent || (options.index = index, model.trigger("remove", model, this, options)), this._removeReference(model));
+            ] : _.clone(models), options || (options = {}), i = 0, l = models.length; i < l; i++)(model = models[i] = this.get(models[i])) && (delete this._byId[model.id], delete this._byId[model.cid], index = this.indexOf(model), this.models.splice(index, 1), this.length--, options.silent || (options.index = index, model.trigger("remove", model, this, options)), this._removeReference(model));
             return singular ? models[0] : models;
         },
         set: function(models, options) {
@@ -308,7 +308,7 @@
             return singular ? models[0] : models;
         },
         reset: function(models, options) {
-            options = {};
+            options || (options = {});
             for(var i = 0, l = this.models.length; i < l; i++)this._removeReference(this.models[i]);
             return options.previousModels = this.models, this._reset(), models = this.add(models, _.extend({
                 silent: !0
@@ -352,7 +352,7 @@
         },
         sort: function(options) {
             if (!this.comparator) throw Error("Cannot sort a set without a comparator");
-            return options = {}, _.isString(this.comparator) || 1 === this.comparator.length ? this.models = this.sortBy(this.comparator, this) : this.models.sort(_.bind(this.comparator, this)), options.silent || this.trigger("sort", this, options), this;
+            return options || (options = {}), _.isString(this.comparator) || 1 === this.comparator.length ? this.models = this.sortBy(this.comparator, this) : this.models.sort(_.bind(this.comparator, this)), options.silent || this.trigger("sort", this, options), this;
         },
         pluck: function(attr) {
             return _.invoke(this.models, "get", attr);
@@ -452,7 +452,7 @@
         };
     });
     var View = Backbone.View = function(options) {
-        this.cid = _.uniqueId("view"), options = {}, _.extend(this, _.pick(options, viewOptions)), this._ensureElement(), this.initialize.apply(this, arguments), this.delegateEvents();
+        this.cid = _.uniqueId("view"), options || (options = {}), _.extend(this, _.pick(options, viewOptions)), this._ensureElement(), this.initialize.apply(this, arguments), this.delegateEvents();
     }, delegateEventSplitter = /^(\S+)\s*(.*)$/, viewOptions = [
         "model",
         "collection",
@@ -503,7 +503,7 @@
         }
     }), Backbone.sync = function(method, model, options) {
         var type = methodMap[method];
-        _.defaults(options = {}, {
+        _.defaults(options || (options = {}), {
             emulateHTTP: Backbone.emulateHTTP,
             emulateJSON: Backbone.emulateJSON
         });
@@ -537,7 +537,7 @@
         return Backbone.$.ajax.apply(Backbone.$, arguments);
     };
     var Router = Backbone.Router = function(options) {
-        (options = {}).routes && (this.routes = options.routes), this._bindRoutes(), this.initialize.apply(this, arguments);
+        options || (options = {}), options.routes && (this.routes = options.routes), this._bindRoutes(), this.initialize.apply(this, arguments);
     }, optionalParam = /\((.*?)\)/g, namedParam = /(\(\?)?:\w+/g, splatParam = /\*\w+/g, escapeRegExp = /[\-{}\[\]+?.,\\\^$|#\s]/g;
     _.extend(Router.prototype, Events, {
         initialize: function() {},
diff --git a/crates/swc_ecma_minifier/tests/projects/output/jquery-1.9.1.js b/crates/swc_ecma_minifier/tests/projects/output/jquery-1.9.1.js
index e6783d6442ba..1e316265c317 100644
--- a/crates/swc_ecma_minifier/tests/projects/output/jquery-1.9.1.js
+++ b/crates/swc_ecma_minifier/tests/projects/output/jquery-1.9.1.js
@@ -2359,7 +2359,7 @@
     }
     function ajaxExtend(target, src) {
         var deep, key, flatOptions = jQuery.ajaxSettings.flatOptions || {};
-        for(key in src)undefined !== src[key] && ((flatOptions[key] ? target : deep = {})[key] = src[key]);
+        for(key in src)undefined !== src[key] && ((flatOptions[key] ? target : deep || (deep = {}))[key] = src[key]);
         return deep && jQuery.extend(!0, target, deep), target;
     }
     ajaxLocParts = rurl.exec(ajaxLocation.toLowerCase()) || [], jQuery.fn.load = function(url, params, callback) {
diff --git a/crates/swc_ecma_minifier/tests/projects/output/underscore-1.5.2.js b/crates/swc_ecma_minifier/tests/projects/output/underscore-1.5.2.js
index cd3c52626ae9..d6c0e10b0751 100644
--- a/crates/swc_ecma_minifier/tests/projects/output/underscore-1.5.2.js
+++ b/crates/swc_ecma_minifier/tests/projects/output/underscore-1.5.2.js
@@ -277,7 +277,7 @@
         ].concat(slice.call(arguments, 1)));
     }, _.throttle = function(func, wait, options) {
         var context, args, result, timeout = null, previous = 0;
-        options = {};
+        options || (options = {});
         var later = function() {
             previous = !1 === options.leading ? 0 : new Date(), timeout = null, result = func.apply(context, args);
         };
diff --git a/crates/swc_ecma_minifier/tests/projects/output/yui-3.12.0.js b/crates/swc_ecma_minifier/tests/projects/output/yui-3.12.0.js
index 5d8188a78a86..99c141004f15 100644
--- a/crates/swc_ecma_minifier/tests/projects/output/yui-3.12.0.js
+++ b/crates/swc_ecma_minifier/tests/projects/output/yui-3.12.0.js
@@ -438,7 +438,7 @@ var YUI = function() {
     }, Y.Queue = Queue, YUI.Env._loaderQueue = YUI.Env._loaderQueue || new Queue();
     var hasOwn = Object.prototype.hasOwnProperty, isObject = Y.Lang.isObject;
     Y.cached = function(source, cache, refetch) {
-        return cache = {}, function(arg) {
+        return cache || (cache = {}), function(arg) {
             var key = arguments.length > 1 ? Array.prototype.join.call(arguments, "__") : String(arg);
             return key in cache && (!refetch || cache[key] != refetch) || (cache[key] = source.apply(source, arguments)), cache[key];
         };