prepublish.sh

#!/bin/bash

# Prepublish checks

set -e

REPO=js-builder

if [[ "$npm_config_argv" == *"\"cooked\":[\"install\""* ]]
then
    echo "Not checking git version because it looks like this is an install (not a publish)"
    exit 0
fi

if [ "$npm_config_tag" != "latest" ]
then
    echo "Not checking git version because npm_config_tag is \"$npm_config_tag\""
    exit 0
fi

# Make sure that the local branch tip revision is the same
# as upstream master.
LOCAL_TIP=$(git rev-parse HEAD)
REMOTE_TIP=$(git ls-remote https://github.com/jenkinsci/$REPO master | awk '{ print $1 }')

if [ $LOCAL_TIP != $REMOTE_TIP ]
then
    echo Local git tip $LOCAL_TIP is not the same as upstream remote master tip $REMOTE_TIP. You must push upstream before you can publish, or publish to a beta tag.
    exit 1
fi