diff --git a/package.json b/package.json
index 550d286812..706cb7ea7c 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "clean_dist_global": "Clean up existing Global package output",
     "commit": "Run git commit wizard",
     "compile_dist_cjs": "Compile codebase into CJS module",
-    "compile_dist_es6": "Compile codebase into ES6",
+    "compile_module_es6": "Compile codebase into ES6",
     "cover": "Execute test coverage",
     "lint_perf": "Run lint against performance test suite",
     "lint_spec": "Run lint against test spec",
@@ -54,7 +54,7 @@
     "info": "npm-scripts-info",
     "build_all": "npm-run-all build_cjs build_global generate_packages",
     "build_cjs": "npm-run-all clean_dist_cjs copy_src_cjs compile_dist_cjs",
-    "build_es6": "npm-run-all clean_dist_es6 copy_src_es6 compile_dist_es6",
+    "build_es6": "npm-run-all clean_dist_es6 copy_src_es6 compile_module_es6",
     "build_es6_for_docs": "npm-run-all clean_dist_es6 copy_src_es6 compile_dist_es6_for_docs",
     "build_closure_core": "node ./tools/make-closure-core.js",
     "build_global": "npm-run-all clean_dist_global build_es6 && mkdirp ./dist/global && node ./tools/make-umd-bundle.js && npm-run-all build_closure_core",
@@ -73,7 +73,7 @@
     "copy_src_es6": "mkdirp ./dist/es6/src && shx cp -r ./src/* ./dist/es6/src",
     "commit": "git-cz",
     "compile_dist_cjs": "tsc ./dist/cjs/src/Rx.ts ./dist/cjs/src/add/observable/of.ts                         -m commonjs --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/cjs --target ES5 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --suppressImplicitAnyIndexErrors --moduleResolution node",
-    "compile_dist_es6": "tsc                                          ./dist/es6/src/Rx.ts ./dist/es6/src/add/observable/of.ts                             -m es2015   --sourceMap --outDir ./dist/es6 --target ES6 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --suppressImplicitAnyIndexErrors --moduleResolution node",
+    "compile_module_es6": "tsc                                          ./dist/es6/src/Rx.ts ./dist/es6/src/add/observable/of.ts                             -m es2015   --sourceMap --outDir ./dist/es6 --target ES5 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --suppressImplicitAnyIndexErrors --moduleResolution node --noEmitHelpers --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom ",
     "compile_dist_es6_for_docs": "tsc                                 ./dist/es6/src/Rx.ts ./dist/es6/src/add/observable/of.ts ./dist/es6/src/MiscJSDoc.ts -m es2015   --sourceMap --outDir ./dist/es6 --target ES6 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --suppressImplicitAnyIndexErrors --moduleResolution node",
     "cover": "shx rm -rf dist/cjs && tsc src/Rx.ts src/add/observable/of.ts -m commonjs --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --outDir dist/cjs --sourceMap --target ES5 -d && nyc --reporter=lcov --reporter=html --exclude=spec/support/**/* --exclude=spec-js/**/* --exclude=node_modules mocha --opts spec/support/default.opts spec-js",
     "decision_tree_widget": "cd doc/decision-tree-widget && npm run build && cd ../..",
@@ -149,9 +149,6 @@
     "@types/mocha": "^2.2.32",
     "@types/sinon": "^1.16.31",
     "@types/sinon-chai": "^2.7.27",
-    "babel-core": "6.17.0",
-    "babel-polyfill": "6.16.0",
-    "babel-preset-es2015": "6.16.0",
     "benchmark": "^2.1.0",
     "benchpress": "2.0.0-beta.1",
     "chai": "^3.5.0",
@@ -192,6 +189,7 @@
     "sinon": "^2.0.0-pre",
     "sinon-chai": "^2.8.0",
     "source-map-support": "^0.4.0",
+    "tslib": "^1.0.0",
     "tslint": "^3.15.1",
     "typescript": "^2.0.3",
     "validate-commit-msg": "^2.3.1",
@@ -207,4 +205,4 @@
   "dependencies": {
     "symbol-observable": "^1.0.1"
   }
-}
\ No newline at end of file
+}
diff --git a/tools/make-umd-bundle.js b/tools/make-umd-bundle.js
index bc9450a741..f4792646f8 100644
--- a/tools/make-umd-bundle.js
+++ b/tools/make-umd-bundle.js
@@ -1,21 +1,17 @@
 var rollup = require('rollup');
 var fs = require('fs');
-
-var babel = require('babel-core');
+var path = require('path');
 
 rollup.rollup({
   entry: 'dist/es6/Rx.js'
 }).then(function (bundle) {
   var result = bundle.generate({
-    format: 'es'
-  });
-
-  var out = babel.transform(result.code, {
-    compact: false,
-    presets: [
-      ['es2015', { loose: true }]
-    ],
+    format: 'umd',
+    moduleName: 'Rx',
+    sourceMap: true
   });
+  var tslib = fs.readFileSync(path.join(process.cwd() + '/node_modules/tslib/tslib.js'), 'utf8')
 
-  fs.writeFileSync('dist/global/Rx.js', out.code);
+  fs.writeFileSync('dist/global/Rx.js', tslib + result.code);
+  fs.writeFileSync('dist/global/Rx.js.map', result.map);
 });