added back babel-polyfill

scripts/test-dev

@@ -1,3 +1,5 @@
 #!/bin/bash
 
-$(npm bin)/ts-node --compilerOptions '{"target": "es3"}' test/dev/test.ts
+npm run test:compile
+node test-tmp/test/dev/test.js
+npm run test:removeTmpDir

test/dev/test.ts

@@ -1,6 +1,6 @@
 'use strict';
 
-let JavaScriptObfuscator: any = require('../../dist/index');
+let JavaScriptObfuscator: any = require('../../index');
 
 let obfuscatedCode: string = JavaScriptObfuscator.obfuscate(
     `