adding utility to automate stip debug (#239)
diff --git a/knative-build/runtimes/javascript/utils/cleanjs.sh b/knative-build/runtimes/javascript/utils/cleanjs.sh
new file mode 100755
index 0000000..14335cc
--- /dev/null
+++ b/knative-build/runtimes/javascript/utils/cleanjs.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+USAGE="cleanjs.sh <SOURCE_DIR>"
+
+if [ $1 ]
+then
+ : # $1 was given
+ SOURCE=$1
+
+ echo "SOURCE=[$SOURCE]"
+ TARGET=$SOURCE"/.cleanjs"
+ echo "TARGET=[$TARGET]"
+
+ # create target directory
+ mkdir -p $TARGET
+
+ # copy all javascript files while preserving the original path
+ find $SOURCE -name "*.js" | cpio -p -dumv $TARGET/
+
+ # remove the package itself
+ find $TARGET -type f -exec sed -i '' -e '\|utils/debug|d' '{}' \;
+
+ # remove all lines that dereference the package (i.e., named DEBUG by convention)
+ find $TARGET -type f -exec sed -i '' -e '/DEBUG/d' '{}' \;
+
+else
+ echo $USAGE
+ exit 1
+fi
