ci(travis): run commitlint on travis ci

.travis.yml

@@ -22,6 +22,7 @@ addons:
   firefox: latest
 
 before_install:
+  - git fetch --unshallow # needed for commitlint
   - nvm i node
   - npm install
   - npm install -g greenkeeper-lockfile@1
@@ -31,6 +32,7 @@ before_script: greenkeeper-lockfile-update
 script :
   - npm run build-static
   - npm test -- --browsers $BROWSERS
+  - bash tools/lint-commits.sh # script lint commit messages, handles commits from forks and same repo
   - npm run lint-js
   - npm run lint-css
   - npm run lint-md

package.json

@@ -3,7 +3,6 @@
   "version": "6.1.0",
   "description": "Application Framework for uPortal",
   "scripts": {
-    "commitmsg": "commitlint -e",
     "cz": "git-cz",
     "test": "karma start components/karma.conf.js --single-run",
     "build-static": "node tools/static/build.js",

tools/lint-commits.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+#
+# Licensed to Apereo under one or more contributor license
+# agreements. See the NOTICE file distributed with this work
+# for additional information regarding copyright ownership.
+# Apereo 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 the following location:
+#
+#   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.
+#
+
+set -e
+set -u
+
+if [[ $TRAVIS_PULL_REQUEST_SLUG != "" && $TRAVIS_PULL_REQUEST_SLUG != $TRAVIS_REPO_SLUG ]]; then
+    # This is a Pull Request from a different slug, hence a forked repository
+    echo this is a pull request from fork
+    git remote add "$TRAVIS_PULL_REQUEST_SLUG" "https://github.com/$TRAVIS_PULL_REQUEST_SLUG.git"
+    git fetch "$TRAVIS_PULL_REQUEST_SLUG"
+
+    # Use the fetched remote pointing to the source clone for comparison
+    TO="$TRAVIS_PULL_REQUEST_SLUG/$TRAVIS_PULL_REQUEST_BRANCH"
+else
+    echo this is an internal pull request
+    # This is a Pull Request from the same remote, no clone repository
+    TO=$TRAVIS_COMMIT
+fi
+
+# Lint all commits in the PR
+# - Covers fork pull requests (when TO=slug/branch)
+# - Covers branch pull requests (when TO=branch)
+echo $TRAVIS_BRANCH
+echo $TO
+npx commitlint --from="$TRAVIS_BRANCH" --to="$TO"
+
+# Always lint the triggerig commit
+# - Covers direct commits
+echo $TRAVIS_COMMIT
+npx commitlint --from="$TRAVIS_COMMIT"