diff --git a/scripts/publish/pub_prepare.sh b/scripts/publish/pub_prepare.sh
new file mode 100755
index 0000000000..6d7a681e8b
--- /dev/null
+++ b/scripts/publish/pub_prepare.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# This script prepares build artifacts for upload to pub.
+#
+# Usage:
+#
+# scripts/publish/pub_prepare.sh PACKAGE_NAME
+
+set -ex
+shopt -s extglob
+
+NAME=$1
+ROOT_DIR=$(cd $(dirname $0)/../..; pwd)
+cd $ROOT_DIR
+
+PKG_DIR=$ROOT_DIR/dist/pub
+FILES='!(e2e_test|pubspec.lock)'
+
+PUBLISH_DIR=$PKG_DIR/$NAME
+rm -fr $PUBLISH_DIR
+mkdir -p $PUBLISH_DIR
+
+cp -RP $ROOT_DIR/dist/dart/$NAME/$FILES $PUBLISH_DIR
+
+node scripts/publish/pubspec_cleaner.js --pubspec-file=$PUBLISH_DIR/pubspec.yaml
diff --git a/scripts/publish/pub_publish.sh b/scripts/publish/pub_publish.sh
index 404d2673b1..627d7851cf 100755
--- a/scripts/publish/pub_publish.sh
+++ b/scripts/publish/pub_publish.sh
@@ -21,17 +21,12 @@ gulp build.dart.material
 
 PKG_DIR=$ROOT_DIR/dist/pub
 rm -fr $PKG_DIR
-FILES='!(e2e_test|pubspec.lock)'
 
 function publishModule {
   NAME=$1
   PUBLISH_DIR=$PKG_DIR/$NAME
-  rm -fr $PUBLISH_DIR
-  mkdir -p $PUBLISH_DIR
 
-  cp -RP $ROOT_DIR/dist/dart/$NAME/$FILES $PUBLISH_DIR
-
-  node scripts/publish/pubspec_cleaner.js --pubspec-file=$PUBLISH_DIR/pubspec.yaml
+  scripts/publish/pub_prepare.sh $NAME
 
   if [[ "$DRY_RUN" == "false" ]]; then
     (cd $PUBLISH_DIR && pub publish -f)