message: Travis: test on osx as well
diff: language: node_js
  -sudo: required # needed for headless chrome's sandbox
  +sudo: required # needed for headless chrome (puppeteer)
  -notifications:
  - slack: wixc3:xUUjwQ3EV68OhBqh6LRdngEr
  +os:
  + - linux
  + - osx
  node_js:
  - 10 # current
  @@ -15,3 +16,6 @@ cache:
  before_install:
  - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.12.1
  - export PATH=$HOME/.yarn/bin:$PATH
  +
  +notifications:
  + slack: wixc3:xUUjwQ3EV68OhBqh6LRdngEr
  