diff --git a/Gruntfile.js b/Gruntfile.js
index a0ca9148dc9..f6f8ebf8778 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -2,7 +2,7 @@
 
 var exec = require('child_process').exec;
 var jsxTask = require('./grunt/tasks/jsx');
-var browserifyTask = require('./grunt/tasks/browserify');
+var bundleTask = require('./grunt/tasks/bundle');
 var populistTask = require('./grunt/tasks/populist');
 var webdriverPhantomJSTask = require('./grunt/tasks/webdriver-phantomjs');
 var webdriverJasmineTasks = require('./grunt/tasks/webdriver-jasmine');
@@ -19,7 +19,7 @@ module.exports = function(grunt) {
     pkg: grunt.file.readJSON('package.json'),
     copy: require('./grunt/config/copy'),
     jsx: require('./grunt/config/jsx'),
-    browserify: require('./grunt/config/browserify'),
+    bundle: require('./grunt/config/bundle'),
     populist: require('./grunt/config/populist'),
     connect: require('./grunt/config/server')(grunt),
     "webdriver-jasmine": require('./grunt/config/webdriver-jasmine'),
@@ -52,8 +52,8 @@ module.exports = function(grunt) {
   // Register jsx:normal and :release tasks.
   grunt.registerMultiTask('jsx', jsxTask);
 
-  // Our own browserify-based tasks to build a single JS file build
-  grunt.registerMultiTask('browserify', browserifyTask);
+  // Our own bundle-based tasks to build a single JS file build
+  grunt.registerMultiTask('bundle', bundleTask);
 
   grunt.registerMultiTask('populist', populistTask);
 
@@ -71,22 +71,22 @@ module.exports = function(grunt) {
 
   grunt.registerTask('version-check', versionCheckTask);
 
-  grunt.registerTask('build:basic', ['jsx:normal', 'version-check', 'browserify:basic']);
-  grunt.registerTask('build:addons', ['jsx:normal', 'browserify:addons']);
-  grunt.registerTask('build:transformer', ['jsx:normal', 'browserify:transformer']);
-  grunt.registerTask('build:min', ['jsx:normal', 'version-check', 'browserify:min']);
-  grunt.registerTask('build:addons-min', ['jsx:normal', 'browserify:addonsMin']);
+  grunt.registerTask('build:basic', ['jsx:normal', 'version-check', 'bundle:basic']);
+  grunt.registerTask('build:addons', ['jsx:normal', 'bundle:addons']);
+  grunt.registerTask('build:transformer', ['jsx:normal', 'bundle:transformer']);
+  grunt.registerTask('build:min', ['jsx:normal', 'version-check', 'bundle:min']);
+  grunt.registerTask('build:addons-min', ['jsx:normal', 'bundle:addonsMin']);
   grunt.registerTask('build:withCodeCoverageLogging', [
     'jsx:normal',
     'version-check',
-    'browserify:withCodeCoverageLogging'
+    'bundle:withCodeCoverageLogging'
   ]);
   grunt.registerTask('build:perf', [
     'jsx:normal',
     'version-check',
-    'browserify:transformer',
-    'browserify:basic',
-    'browserify:min',
+    'bundle:transformer',
+    'bundle:basic',
+    'bundle:min',
     'download-previous-version'
   ]);
   grunt.registerTask('build:test', [
@@ -195,11 +195,11 @@ module.exports = function(grunt) {
     'delete-build-modules',
     'jsx:normal',
     'version-check',
-    'browserify:basic',
-    'browserify:transformer',
-    'browserify:addons',
-    'browserify:min',
-    'browserify:addonsMin',
+    'bundle:basic',
+    'bundle:transformer',
+    'bundle:addons',
+    'bundle:min',
+    'bundle:addonsMin',
     'npm-react:release',
     'npm-react:pack',
     'npm-react-tools:pack',
diff --git a/grunt/config/browserify.js b/grunt/config/bundle.js
similarity index 56%
rename from grunt/config/browserify.js
rename to grunt/config/bundle.js
index 61481e43534..fd056515e34 100644
--- a/grunt/config/browserify.js
+++ b/grunt/config/bundle.js
@@ -3,11 +3,11 @@
 
 'use strict';
 
+var deamdify = require('deamdify');
 var envify = require('envify/custom');
 var es3ify = require('es3ify');
 var grunt = require('grunt');
 var UglifyJS = require('uglify-js');
-var uglifyify = require('uglifyify');
 var _ = require('lodash');
 
 var SIMPLE_TEMPLATE =
@@ -55,66 +55,76 @@ function simpleBannerify(src) {
          '\n' + src;
 }
 
-// Our basic config which we'll add to to make our other builds
+function override(obj1, obj2) {
+  return _.merge({}, obj1, obj2, function (a, b) {
+    if (_.isArray(a)) {
+      return b;
+    }
+  })
+}
+
 var basic = {
-  entries: [
-    './build/modules/React.js'
-  ],
-  outfile: './build/react.js',
-  debug: false,
-  standalone: 'React',
-  transforms: [envify({NODE_ENV: 'development'})],
-  after: [es3ify.transform, simpleBannerify]
+  src: './build/modules/React.js',
+  dest: './build/react.js',
+  options: {
+    debug: false,
+    standalone: 'React',
+    transforms: [envify({NODE_ENV: 'development'})],
+    after: [es3ify.transform, simpleBannerify]
+  }
 };
 
-var min = _.merge({}, basic, {
-  outfile: './build/react.min.js',
-  debug: false,
-  transforms: [envify({NODE_ENV: 'production'}), uglifyify],
-  after: [minify, bannerify]
+var min = override(basic, {
+  dest: './build/react.min.js',
+  options: {
+    debug: false,
+    transforms: [envify({NODE_ENV: 'production'})],
+    after: [minify, bannerify]
+  }
 });
 
 var transformer = {
-  entries:[
-    './vendor/browser-transforms.js'
-  ],
-  outfile: './build/JSXTransformer.js',
-  debug: false,
-  standalone: 'JSXTransformer',
-  after: [es3ify.transform, simpleBannerify]
+  src: './vendor/browser-transforms.js',
+  dest: './build/JSXTransformer.js',
+  options: {
+    debug: false,
+    standalone: 'JSXTransformer',
+    transforms: [deamdify],
+    after: [es3ify.transform, simpleBannerify]
+  }
 };
 
 var addons = {
-  entries: [
-    './build/modules/ReactWithAddons.js'
-  ],
-  outfile: './build/react-with-addons.js',
-  debug: false,
-  standalone: 'React',
-  transforms: [envify({NODE_ENV: 'development'})],
-  packageName: 'React (with addons)',
-  after: [es3ify.transform, simpleBannerify]
+  src: './build/modules/ReactWithAddons.js',
+  dest: './build/react-with-addons.js',
+  options: {
+    debug: false,
+    standalone: 'React',
+    transforms: [envify({NODE_ENV: 'development'})],
+    packageName: 'React (with addons)',
+    after: [es3ify.transform, simpleBannerify]
+  }
 };
 
-var addonsMin = _.merge({}, addons, {
-  outfile: './build/react-with-addons.min.js',
-  debug: false,
-  transforms: [envify({NODE_ENV: 'production'}), uglifyify],
-  after: [minify, bannerify]
+var addonsMin = override(addons, {
+  dest: './build/react-with-addons.min.js',
+  options: {
+    debug: false,
+    transforms: [envify({NODE_ENV: 'production'})],
+    after: [minify, bannerify]
+  }
 });
 
-var withCodeCoverageLogging = {
-  entries: [
-    './build/modules/React.js'
-  ],
-  outfile: './build/react.js',
-  debug: true,
-  standalone: 'React',
-  transforms: [
-    envify({NODE_ENV: 'development'}),
-    require('coverify')
-  ]
-};
+var withCodeCoverageLogging = override(basic, {
+  options: {
+    debug: true,
+    transforms: [
+      envify({NODE_ENV: 'development'}),
+      require('coverify')
+    ],
+    after: []
+  }
+});
 
 module.exports = {
   basic: basic,
diff --git a/grunt/tasks/browserify.js b/grunt/tasks/browserify.js
deleted file mode 100644
index e36c545e17b..00000000000
--- a/grunt/tasks/browserify.js
+++ /dev/null
@@ -1,68 +0,0 @@
-'use strict';
-
-var browserify = require('browserify');
-var grunt = require('grunt');
-
-module.exports = function() {
-  var config = this.data;
-
-  // This task is async...
-  var done = this.async();
-
-  // More/better assertions
-  // grunt.config.requires('outfile');
-  // grunt.config.requires('entries');
-  config.transforms = config.transforms || [];
-  config.after = config.after || [];
-  if (typeof config.after === 'function') {
-    config.after = [config.after];
-  }
-
-  // create the bundle we'll work with
-  var entries = grunt.file.expand(config.entries);
-  var bundle = browserify(entries);
-
-  // Make sure the things that need to be exposed are.
-  var requires = config.requires || {};
-  if (requires instanceof Array) {
-    grunt.file.expand({
-      nonull: true, // Keep IDs that don't expand to anything.
-      cwd: "src"
-    }, requires).forEach(function(name) {
-      bundle.require("./build/modules/" + name, {
-        expose: name.replace(/\.js$/i, "")
-      });
-    });
-  } else if (typeof requires === "object") {
-    Object.keys(requires).forEach(function(name) {
-      bundle.require(requires[name], { expose: name });
-    });
-  }
-
-  // Extract other options
-  var options = {
-    debug: config.debug, // sourcemaps
-    standalone: config.standalone // global
-  };
-
-  // TODO: make sure this works, test with this too
-  config.transforms.forEach(function(transform) {
-    bundle.transform({}, transform);
-  });
-
-  // Actually bundle it up
-  var _this = this;
-  bundle.bundle(options, function(err, src) {
-    if (err) {
-      grunt.log.error(err);
-      done();
-    }
-
-    config.after.forEach(function(fn) {
-      src = fn.call(_this, src);
-    });
-
-    grunt.file.write(config.outfile, src);
-    done();
-  });
-};
diff --git a/grunt/tasks/bundle.js b/grunt/tasks/bundle.js
new file mode 100644
index 00000000000..692c55642c3
--- /dev/null
+++ b/grunt/tasks/bundle.js
@@ -0,0 +1,38 @@
+'use strict';
+
+var cjs = require('pure-cjs');
+var grunt = require('grunt');
+
+module.exports = function() {
+  var config = this.options({
+    transforms: [],
+    after: []
+  });
+
+  // This task is async...
+  var done = this.async();
+
+  // Extract options
+  var options = {
+    input: this.files[0].src[0],
+    output: this.files[0].dest,
+    map: config.debug, // sourcemaps
+    exports: config.standalone, // global
+    transform: config.transforms,
+    dryRun: true // we will write to disk ourselves
+  };
+
+  // Actually bundle it up
+  var _this = this;
+
+  cjs.transform(options).then(function(result) {
+    grunt.file.write(result.options.output, config.after.reduce(function(src, fn) {
+      return fn.call(_this, src);
+    }, result.code));
+
+    done();
+  }, function(err) {
+    grunt.log.error(err);
+    done(false);
+  });
+};
diff --git a/package.json b/package.json
index 0860f2f5877..8d54d45edb0 100644
--- a/package.json
+++ b/package.json
@@ -39,8 +39,8 @@
   },
   "devDependencies": {
     "benchmark": "~1.0.0",
-    "browserify": "~3.20.0",
     "coverify": "~1.0.4",
+    "deamdify": "~0.1.1",
     "envify": "~1.2.0",
     "es3ify": "~0.1.2",
     "es5-shim": "~2.3.0",
@@ -61,6 +61,7 @@
     "phantomjs": "~1.9",
     "platform": "~1.0.0",
     "populist": "~0.1.6",
+    "pure-cjs": "~1.9.0",
     "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 26c48a7f9b7..a35db1e9cd5 100644
--- a/vendor/browser-transforms.js
+++ b/vendor/browser-transforms.js
@@ -20,7 +20,6 @@
 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');
@@ -123,7 +122,7 @@ var transformCode = function(code, source) {
     return (
       transformed.code +
       '//# sourceMappingURL=data:application/json;base64,' +
-      buffer.Buffer(JSON.stringify(map)).toString('base64')
+      btoa(unescape(encodeURIComponent(JSON.stringify(map))))
     );
   } else {
     return code;