language: node_js
node_js:
  - "10"
dist: trusty # needs Ubuntu Trusty
sudo: false  # no need for virtualization.
addons:
  chrome: stable # have Travis install chrome stable.
before_script: # https://github.com/travis-ci/travis-ci/issues/9024#issuecomment-356282802
    - "sudo chown root /opt/google/chrome/chrome-sandbox"
    - "sudo chmod 4755 /opt/google/chrome/chrome-sandbox"
cache:
  npm: true
  directories:
    - node_modules
install:
  - npm install
script:
  - npm test