diff --git a/package.json b/package.json
index 1c869784..4f3be352 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "javascript-obfuscator": "./bin/javascript-obfuscator.js"
   },
   "dependencies": {
+    "babel-polyfill": "^6.20.0",
     "babel-runtime": "^6.20.0",
     "chance": "1.0.4",
     "class-validator": "0.6.6",
diff --git a/src/JavaScriptObfuscator.ts b/src/JavaScriptObfuscator.ts
index dfae1fdb..fa02ed81 100644
--- a/src/JavaScriptObfuscator.ts
+++ b/src/JavaScriptObfuscator.ts
@@ -1,5 +1,11 @@
+require("babel-core/external-helpers");
+
 import 'reflect-metadata';
 
+if (!(<any>global)._babelPolyfill) {
+    require('babel-polyfill');
+}
+
 import { ServiceIdentifiers } from './container/ServiceIdentifiers';
 
 import { Chance } from 'chance';
diff --git a/test/dev/dev-compile-performance.ts b/test/dev/dev-compile-performance.ts
index c87cfb10..9b75f874 100644
--- a/test/dev/dev-compile-performance.ts
+++ b/test/dev/dev-compile-performance.ts
@@ -2,6 +2,10 @@
 
 import * as fs from 'fs';
 
+if (!(<any>global)._babelPolyfill) {
+    require('babel-polyfill');
+}
+
 (function () {
     const JavaScriptObfuscator: any = require("../../index");
 
diff --git a/test/dev/dev-runtime-performance.ts b/test/dev/dev-runtime-performance.ts
index dbd45639..271b9c5b 100644
--- a/test/dev/dev-runtime-performance.ts
+++ b/test/dev/dev-runtime-performance.ts
@@ -1,5 +1,9 @@
 'use strict';
 
+if (!(<any>global)._babelPolyfill) {
+    require('babel-polyfill');
+}
+
 (function () {
     const JavaScriptObfuscator: any = require("../../index");
 
diff --git a/test/dev/dev.ts b/test/dev/dev.ts
index e44e814c..5307d3d8 100644
--- a/test/dev/dev.ts
+++ b/test/dev/dev.ts
@@ -1,5 +1,9 @@
 'use strict';
 
+if (!(<any>global)._babelPolyfill) {
+    require('babel-polyfill');
+}
+
 (function () {
     const JavaScriptObfuscator: any = require("../../index");
 
diff --git a/test/index.spec.ts b/test/index.spec.ts
index 0cb7889f..2fb109c8 100644
--- a/test/index.spec.ts
+++ b/test/index.spec.ts
@@ -1,6 +1,8 @@
+import { BabelPolyfill } from './polyfills/BabelPolyfill';
 import 'reflect-metadata';
 
 require('source-map-support').install();
+BabelPolyfill.append();
 
 /**
  * Unit tests
diff --git a/test/polyfills/BabelPolyfill.ts b/test/polyfills/BabelPolyfill.ts
new file mode 100644
index 00000000..f7a50747
--- /dev/null
+++ b/test/polyfills/BabelPolyfill.ts
@@ -0,0 +1,7 @@
+export class BabelPolyfill {
+    public static append (): void {
+        if (!(<any>global)._babelPolyfill) {
+            require('babel-polyfill');
+        }
+    }
+}