language: node_js
node_js:
  - 8
  - node
before_install:
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
script: npm test
addons:
  firefox: "51.0"

language: node_js
node_js:
  - 8
  - node
script: npm test
addons:
  firefox: '51.0'
dist: xenial
services:
  - xvfb

Migrate to use Xenial in Travis
Migrate to use Xenial in Travis
