diff --git a/test-app/app/src/main/assets/internal/ts_helpers.js b/test-app/app/src/main/assets/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/app/src/main/assets/internal/ts_helpers.js
+++ b/test-app/app/src/main/assets/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/decorated_double_assignment_ts/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/decorated_double_assignment_ts/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/decorated_double_assignment_ts/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/decorated_double_assignment_ts/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/decorated_extends_ts/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/decorated_extends_ts/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/decorated_extends_ts/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/decorated_extends_ts/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/directory_with_dashes/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/directory_with_dashes/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/directory_with_dashes/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/directory_with_dashes/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/extends/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/extends/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/extends/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/extends/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces_ts/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces_ts/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces_ts/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/extends_with_interfaces_ts/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/file_names_with_dots/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/file_names_with_dots/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/file_names_with_dots/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/file_names_with_dots/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;
diff --git a/test-app/build-tools/jsparser/tests/cases/mini_app/internal/ts_helpers.js b/test-app/build-tools/jsparser/tests/cases/mini_app/internal/ts_helpers.js
index f5c450a65..1a0625f45 100644
--- a/test-app/build-tools/jsparser/tests/cases/mini_app/internal/ts_helpers.js
+++ b/test-app/build-tools/jsparser/tests/cases/mini_app/internal/ts_helpers.js
@@ -48,8 +48,7 @@
 	};
 
 	var __extends = function (Child, Parent) {
-		const NATIVE_CODE_REGEX = /\{\s*\[native code\]\s*\}/g;
-		var extendNativeClass = !!Parent.extend && NATIVE_CODE_REGEX.test(Parent.extend.toString());
+		var extendNativeClass = !!Parent.extend && (Parent.extend.toString().indexOf("[native code]") > -1);
 		if (!extendNativeClass) {
 			__extends_ts(Child, Parent);
 			return;