diff --git a/package.json b/package.json
index abd2005..7f24fb1 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,9 @@
   "author": "cramforce",
   "license": "Apache-2.0",
   "devDependencies": {
+    "@angular/common": "^2.4.7",
+    "@angular/core": "^2.4.7",
+    "@angular/platform-browser": "github:angular/platform-browser-builds#master-es2015",
     "babel-plugin-transform-object-rest-spread": "^6.20.2",
     "babel-preset-es2015": "^6.18.0",
     "babel-preset-stage-0": "^6.16.0",
@@ -33,7 +36,9 @@
     "promise-pjs": "^1.1.2",
     "react": "^15.4.1",
     "react-dom": "^15.4.1",
-    "tap": "^8.0.0"
+    "rxjs": "^5.1.1",
+    "tap": "^8.0.0",
+    "zone.js": "^0.7.7"
   },
   "dependencies": {
     "babel-plugin-transform-es2015-modules-commonjs": "^6.18.0",
diff --git a/splittable.js b/splittable.js
index c90742d..467ddbf 100644
--- a/splittable.js
+++ b/splittable.js
@@ -239,8 +239,13 @@ exports.getGraph = function(entryModules, config) {
   transform(babel, {
     babelrc: false,
     plugins: [
+      require.resolve("babel-plugin-transform-export-extensions"),
       require.resolve("babel-plugin-transform-es2015-modules-commonjs"),
-    ]
+    ],
+    // Also transform node_modules. This should be safe, since we only
+    // do module discovery here.
+    ignore: false,
+    global: true,
   });
 
   b.on('package', function(pkg) {
@@ -291,6 +296,11 @@ exports.getGraph = function(entryModules, config) {
         if (seenTransform[filename]) {
           return;  // We only care about the first transform per file.
         }
+        if (filename.indexOf('node_modules/') != -1) {
+          // The only once hack doesn't work with node_modules because
+          // the primary transform is not global.
+          return;
+        }
         seenTransform[filename] = true;
         filename = relativePath(process.cwd(), filename);
         // Copy transformed code into shadow path. Files in this path
diff --git a/test/module-regression/angular.js b/test/module-regression/angular.js
new file mode 100644
index 0000000..0ab9ef6
--- /dev/null
+++ b/test/module-regression/angular.js
@@ -0,0 +1 @@
+import { platformBrowser } from '@angular/platform-browser/index';
\ No newline at end of file
diff --git a/third_party/closure-compiler/closure-compiler-1.0-SNAPSHOT.jar b/third_party/closure-compiler/closure-compiler-1.0-SNAPSHOT.jar
index 00d77c8..dbd3c10 100644
Binary files a/third_party/closure-compiler/closure-compiler-1.0-SNAPSHOT.jar and b/third_party/closure-compiler/closure-compiler-1.0-SNAPSHOT.jar differ