added back babel-polyfill

.babelrc

@@ -1,7 +1,6 @@
 {
   "presets": ["es2015"],
   "plugins": [
-    "transform-array-from",
     "transform-object-assign"
   ]
 }

index.ts

@@ -2,4 +2,8 @@
 
 import { JavaScriptObfuscator } from './src/JavaScriptObfuscator';
 
+if (!(<any>global)._babelPolyfill) {
+    require('babel-polyfill');
+}
+
 module.exports = JavaScriptObfuscator;

package.json

@@ -28,7 +28,6 @@
   "devDependencies": {
     "babel-cli": "^6.9.0",
     "babel-loader": "^6.2.4",
-    "babel-plugin-transform-array-from": "^1.0.0",
     "babel-plugin-transform-object-assign": "^6.8.0",
     "babel-preset-es2015": "^6.9.0",
     "chai": "^3.5.0",

scripts/test-compile

@@ -1,4 +1,4 @@
 #!/bin/bash
 
 $(npm bin)/tsc -p tsconfig-test.json
-$(npm bin)/babel test-tmp --out-dir test-tmp --source-maps --presets es2015 --plugins transform-array-from,transform-object-assign
+$(npm bin)/babel test-tmp --out-dir test-tmp --source-maps --presets es2015 --plugins transform-object-assign

src/JavaScriptObfuscator.ts

@@ -12,10 +12,6 @@ import { JavaScriptObfuscatorCLI } from "./cli/JavaScriptObfuscatorCLI";
 import { Obfuscator } from "./Obfuscator";
 import { Options } from "./Options";
 
-if (!(<any>global)._babelPolyfill) {
-    require('babel-polyfill');
-}
-
 export class JavaScriptObfuscator {
     /**
      * @type {GenerateOptions}

test/JavaScriptObfuscator.spec.ts

@@ -1,9 +1,13 @@
+import { BabelPolyfill } from 'polyfills/BabelPolyfill';
+
 import { JavaScriptObfuscator } from "../src/JavaScriptObfuscator";
 
 import { NO_CUSTOM_NODES_PRESET } from "../src/preset-options/NoCustomNodesPreset";
 
 const assert: Chai.AssertStatic = require('chai').assert;
 
+BabelPolyfill.append();
+
 describe('JavaScriptObfuscator', () => {
     describe('obfuscate (sourceCode: string, customOptions?: IOptionsPreset): string', () => {
         it('should obfuscate simple code with variable inside global scope', () => {

test/JavaScriptObfuscatorCLI.spec.ts

@@ -2,12 +2,16 @@ import * as fs from 'fs';
 import * as mkdirp from 'mkdirp';
 import * as sinon from 'sinon';
 
+import { BabelPolyfill } from 'polyfills/BabelPolyfill';
+
 import { StdoutWriteMock } from "../test/mocks/StdoutWriteMock";
 
 import { JavaScriptObfuscator } from "../src/JavaScriptObfuscator";
 
 const assert: Chai.AssertStatic = require('chai').assert;
 
+BabelPolyfill.append();
+
 describe('JavaScriptObfuscatorCLI', function (): void {
     let fixturesDirName: string = 'test/fixtures',
         fixtureFileName: string = 'sample.js',

test/NodeUtils.spec.ts

@@ -1,3 +1,5 @@
+import { BabelPolyfill } from 'polyfills/BabelPolyfill';
+
 import { IBlockStatementNode } from "../src/interfaces/nodes/IBlockStatementNode";
 import { IFunctionDeclarationNode } from "../src/interfaces/nodes/IFunctionDeclarationNode";
 import { IIdentifierNode } from "../src/interfaces/nodes/IIdentifierNode";
@@ -12,6 +14,8 @@ import { NodeUtils } from '../src/NodeUtils';
 
 const assert: any = require('chai').assert;
 
+BabelPolyfill.append();
+
 function getProgramNode (bodyNodes: INode[] = []): IProgramNode {
     return {
         type: NodeType.Program,

test/OptionsNormalizer.spec.ts

@@ -1,3 +1,5 @@
+import { BabelPolyfill } from 'polyfills/BabelPolyfill';
+
 import { IOptionsPreset } from "../src/interfaces/IOptionsPreset";
 
 import { OptionsNormalizer } from '../src/OptionsNormalizer';
@@ -6,6 +8,8 @@ import { DEFAULT_PRESET } from '../src/preset-options/DefaultPreset';
 
 const assert: Chai.AssertStatic = require('chai').assert;
 
+BabelPolyfill.append();
+
 describe('OptionsNormalizer', () => {
     describe('normalizeOptionsPreset (options: IOptionsPreset): IOptionsPreset', () => {
         let optionsPreset1: IOptionsPreset = Object.assign({}, DEFAULT_PRESET, {

test/Utils.spec.ts

@@ -1,9 +1,13 @@
+import { BabelPolyfill } from 'polyfills/BabelPolyfill';
+
 import { Utils } from '../src/Utils';
 
 import { JSFuck } from '../src/enums/JSFuck';
 
 const assert: Chai.AssertStatic = require('chai').assert;
 
+BabelPolyfill.append();
+
 describe('Utils', () => {
     describe('arrayContains (array: any[], searchElement: any): boolean', () => {
         it('should return boolean depends on condition if array is contains given value or not', () => {

test/polyfills/BabelPolyfill.ts

@@ -0,0 +1,7 @@
+export class BabelPolyfill {
+    public static append (): void {
+        if (!(<any>global)._babelPolyfill) {
+            require('babel-polyfill');
+        }
+    }
+}