chore: test commits in pr via Travis CI (#37)

* chore: delete obsolete test file

* chore: lint commits in a pr

* chore: enable clone pr linting

* chore: remove rogue npmrc

* chore: add missing devDependency

.travis.yml

@@ -4,8 +4,9 @@ node_js:
   - '6'
   - '4'
 before_install:
-  - npm i -g npm
+  - git fetch --unshallow
 before_script:
+  - npm run lint:prcommits
   - npm run build
 script:
   - npm test

package.json

@@ -21,6 +21,7 @@
     "pretest": "npm run deps",
     "test": "ava",
     "lint": "xo *.js",
+    "lint:prcommits": "./scripts/lint-prcommits.sh",
     "deps": "npm run build && dependency-check . --missing && dependency-check . --extra --no-dev -i conventional-changelog-angular -i conventional-changelog-lint-config-angular",
     "commitlint": "node distribution/cli.js --from=HEAD~1",
     "preversion": "npm run build && npm test",
@@ -95,6 +96,7 @@
     "babel-polyfill": "6.20.0",
     "babel-preset-env": "1.2.1",
     "babel-preset-stage-0": "6.16.0",
+    "babel-register": "6.24.1",
     "conventional-changelog-cli": "1.2.0",
     "conventional-recommended-bump": "0.3.0",
     "cz-conventional-changelog-lint": "0.1.3",

scripts/lint-prcommits.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+set -u
+
+# Add the clone as remote if this is a PR from a clone
+if [ $TRAVIS_PULL_REQUEST_SLUG != "" ] && [ $TRAVIS_PULL_REQUEST_SLUG != $TRAVIS_REPO_SLUG ]; then
+	git remote add "$TRAVIS_PULL_REQUEST_SLUG" "https://github.com/$TRAVIS_PULL_REQUEST_SLUG.git"
+	git fetch "$TRAVIS_PULL_REQUEST_SLUG"
+fi
+
+# Use REMOTE/BRANCH as comparison if applicable
+if [ $TRAVIS_PULL_REQUEST_SLUG != "" ]; then
+	TO="$TRAVIS_PULL_REQUEST_SLUG/$TRAVIS_PULL_REQUEST_BRANCH"
+else
+	TO="$TRAVIS_PULL_REQUEST_BRANCH"
+fi
+
+conventional-changelog-lint --from="$TRAVIS_BRANCH" --to="$TO"