Babelify too :(

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015"]
+}

package.json

@@ -5,13 +5,17 @@
   "main": "./build/index.js",
   "typings": "./build/index.d.ts",
   "scripts": {
-    "test": "tsc && jasmine",
-    "prepublish": "npm run lint && tsc",
+    "compile": "tsc && babel build -d build",
+    "test": "npm run compile && jasmine",
+    "prepublish": "npm run lint && npm run compile",
     "lint": "tslint lib/**/*.ts"
   },
   "author": "",
   "license": "ISC",
   "devDependencies": {
+    "babel-cli": "^6.7.5",
+    "babel-polyfill": "^6.7.4",
+    "babel-preset-es2015": "^6.6.0",
     "jasmine": "^2.4.1",
     "temp": "^0.8.3",
     "tslint": "^3.7.4",