language: node_js
node_js:
  - "4"
# https://github.com/travis-ci/travis-ci/issues/4653#issuecomment-194051953
before_install: "if [[ `npm -v` != 4* ]]; then npm i -g npm@4; fi"
script: "npm run test:coverage"
after_script: "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js"