diff --git a/scripts/publish/npm_prepare.sh b/scripts/publish/npm_prepare.sh
new file mode 100755
index 0000000000..f7443ee464
--- /dev/null
+++ b/scripts/publish/npm_prepare.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# This script prepares build artifacts for upload to NPM.
+#
+# Usage:
+#
+# scripts/publish/npm_prepare.sh PACKAGE_NAME
+
+set -ex
+shopt -s extglob
+
+NAME=$1
+ROOT_DIR=$(cd $(dirname $0)/../..; pwd)
+cd $ROOT_DIR
+
+NPM_DIR=$ROOT_DIR/dist/npm
+rm -fr $NPM_DIR
+FILES='!(test|e2e_test|docs)'
+DTS_FILES='*.d.ts'
+
+PUBLISH_DIR=$NPM_DIR/$NAME
+rm -fr $PUBLISH_DIR
+mkdir -p $PUBLISH_DIR
+
+mkdir -p $PUBLISH_DIR/es6/dev
+cp -r $ROOT_DIR/dist/js/dev/es6/$NAME/$FILES $PUBLISH_DIR/es6/dev
+mkdir -p $PUBLISH_DIR/es6/prod
+cp -r $ROOT_DIR/dist/js/prod/es6/$NAME/$FILES $PUBLISH_DIR/es6/prod
+mkdir -p $PUBLISH_DIR/ts
+cp -r $ROOT_DIR/modules/$NAME/$FILES $PUBLISH_DIR/ts
+
+if [ $NAME = "angular2" ]; then
+  # Publish bundles and typings
+  mkdir -p $PUBLISH_DIR/bundles/typings/es6-shim
+  mkdir -p $PUBLISH_DIR/bundles/typings/jasmine
+  # Copy Bundles
+  cp -r $ROOT_DIR/dist/js/bundle/$FILES $PUBLISH_DIR/bundles
+  # Copy Typings
+  cp -r $ROOT_DIR/modules/angular2/typings/es6-shim/$DTS_FILES $PUBLISH_DIR/bundles/typings/es6-shim
+  cp -r $ROOT_DIR/modules/angular2/typings/jasmine/$DTS_FILES $PUBLISH_DIR/bundles/typings/jasmine
+fi
+
+if [ $NAME = "benchpress" ]; then
+  cp -r $ROOT_DIR/dist/build/benchpress_bundle/$FILES $PUBLISH_DIR
+  cp -r $ROOT_DIR/dist/js/cjs/benchpress/README.md $PUBLISH_DIR
+  cp -r $ROOT_DIR/dist/js/cjs/benchpress/LICENSE $PUBLISH_DIR
+  cp -r $ROOT_DIR/dist/js/cjs/benchpress/docs $PUBLISH_DIR
+else
+  cp -r $ROOT_DIR/dist/js/cjs/$NAME/$FILES $PUBLISH_DIR
+fi
+
+# Remove all dart related files
+rm -f $PUBLISH_DIR/{,**/}{*.dart,*.dart.md}
diff --git a/scripts/publish/npm_publish.sh b/scripts/publish/npm_publish.sh
index ff71026b2e..1e1958c109 100755
--- a/scripts/publish/npm_publish.sh
+++ b/scripts/publish/npm_publish.sh
@@ -10,48 +10,9 @@ gulp clean
 gulp benchpress.bundle bundles.js
 
 NPM_DIR=$ROOT_DIR/dist/npm
-rm -fr $NPM_DIR
-FILES='!(test|e2e_test|docs)'
-DTS_FILES='*.d.ts'
 
-function publishModule {
-  NAME=$1
-  PUBLISH_DIR=$NPM_DIR/$NAME
-  rm -fr $PUBLISH_DIR
-  mkdir -p $PUBLISH_DIR
+scripts/publish/npm_prepare.sh angular2
+scripts/publish/npm_prepare.sh benchpress
 
-  mkdir -p $PUBLISH_DIR/es6/dev
-  cp -r $ROOT_DIR/dist/js/dev/es6/$NAME/$FILES $PUBLISH_DIR/es6/dev
-  mkdir -p $PUBLISH_DIR/es6/prod
-  cp -r $ROOT_DIR/dist/js/prod/es6/$NAME/$FILES $PUBLISH_DIR/es6/prod
-  mkdir -p $PUBLISH_DIR/ts
-  cp -r $ROOT_DIR/modules/$NAME/$FILES $PUBLISH_DIR/ts
-
-  if [ $NAME = "angular2" ]; then
-    # Publish bundles and typings
-    mkdir -p $PUBLISH_DIR/bundles/typings/es6-shim
-    mkdir -p $PUBLISH_DIR/bundles/typings/jasmine
-    # Copy Bundles
-    cp -r $ROOT_DIR/dist/js/bundle/$FILES $PUBLISH_DIR/bundles
-    # Copy Typings
-    cp -r $ROOT_DIR/modules/angular2/typings/es6-shim/$DTS_FILES $PUBLISH_DIR/bundles/typings/es6-shim
-    cp -r $ROOT_DIR/modules/angular2/typings/jasmine/$DTS_FILES $PUBLISH_DIR/bundles/typings/jasmine
-  fi
-
-  if [ $NAME = "benchpress" ]; then
-    cp -r $ROOT_DIR/dist/build/benchpress_bundle/$FILES $PUBLISH_DIR
-    cp -r $ROOT_DIR/dist/js/cjs/benchpress/README.md $PUBLISH_DIR
-    cp -r $ROOT_DIR/dist/js/cjs/benchpress/LICENSE $PUBLISH_DIR
-    cp -r $ROOT_DIR/dist/js/cjs/benchpress/docs $PUBLISH_DIR
-  else
-    cp -r $ROOT_DIR/dist/js/cjs/$NAME/$FILES $PUBLISH_DIR
-  fi
-
-  # Remove all dart related files
-  rm -f $PUBLISH_DIR/{,**/}{*.dart,*.dart.md}
-
-  npm publish $PUBLISH_DIR
-}
-
-publishModule angular2
-publishModule benchpress
+npm publish $NPM_DIR/angular2
+npm publish $NPM_DIR/benchpress