diff --git a/grunt/config/browserify.js b/grunt/config/browserify.js
index 6c63ac5796..f0ad28dfa1 100644
--- a/grunt/config/browserify.js
+++ b/grunt/config/browserify.js
@@ -3,7 +3,6 @@
 
 'use strict';
 
-var deamdify = require('deamdify');
 var envify = require('envify/custom');
 var grunt = require('grunt');
 var UglifyJS = require('uglify-js');
@@ -81,7 +80,6 @@ var transformer = {
   outfile: './build/JSXTransformer.js',
   debug: false,
   standalone: 'JSXTransformer',
-  transforms: [deamdify],
   after: [simpleBannerify]
 };
 
diff --git a/package.json b/package.json
index 69cd50e477..21d9b71b8c 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,6 @@
   "devDependencies": {
     "benchmark": "~1.0.0",
     "coverify": "~1.0.4",
-    "deamdify": "~0.1.1",
     "envify": "~1.0.1",
     "es5-shim": "~2.3.0",
     "grunt": "~0.4.2",
@@ -60,7 +59,7 @@
     "phantomjs": "~1.9",
     "platform": "~1.0.0",
     "populist": "~0.1.6",
-    "pure-cjs": "~1.8.3",
+    "pure-cjs": "~1.8.0",
     "recast": "~0.5.6",
     "sauce-tunnel": "~1.1.0",
     "semver": "~2.2.1",
diff --git a/vendor/browser-transforms.js b/vendor/browser-transforms.js
index b0e61c6bb7..701693c34a 100644
--- a/vendor/browser-transforms.js
+++ b/vendor/browser-transforms.js
@@ -20,6 +20,7 @@
 var runScripts;
 var headEl;
 
+var buffer = require('buffer');
 var transform = require('jstransform').transform;
 var visitors = require('./fbtransform/visitors').transformVisitors;
 var docblock = require('jstransform/src/docblock');
@@ -96,10 +97,6 @@ var transformCode = function(code, source) {
       throw e;
     }
 
-    if (typeof btoa === 'undefined') {
-      return transformed.code;
-    }
-
     var map = transformed.sourceMap.toJSON();
     if (source == null) {
       source = "Inline JSX script";
@@ -114,7 +111,7 @@ var transformCode = function(code, source) {
     return (
       transformed.code +
       '//# sourceMappingURL=data:application/json;base64,' +
-      btoa(unescape(encodeURIComponent(JSON.stringify(map))))
+      buffer.Buffer(JSON.stringify(map)).toString('base64')
     );
   } else {
     return code;