.travis.yml

language: node_js
node_js:
- '4.1'
install:
- npm install
before_script:
- PACKAGE_VERSION=$(npm --loglevel silent run read:version)
- TAG_FOUND=$(if GIT_DIR=$(git show-ref --tags | grep -q "refs/tags/$PACKAGE_VERSION$"); then echo true; else echo false; fi)
- npm run lint
cache:
  directories:
  - node_modules
deploy:
  provider: npm
  email: $NPM_EMAIL
  api_key: $NPM_API_KEY
  skip_cleanup: true
  on:
    condition: "$TAG_FOUND == false"
    branch: master
after_deploy:
  if ([ "$TRAVIS_BRANCH" == "master" ] || [ ! -z "$PACKAGE_VERSION" ]) && 
      [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
    git config --global user.email "builds@travis-ci.com";
    git config --global user.name "Travis CI";
    export GIT_TAG=$PACKAGE_VERSION;
    git tag $GIT_TAG -a -m "Generated tag from TravisCI build $PACKAGE_VERSION";
    git push origin $GIT_TAG;
  fi
branches:
  except:
    - /^(\d+\.)(\d+\.)(\d+)(-\w+)?$/