Travis-CI configuration for running Chrome with Karma

.travis.yml

language: node_js
node_js:
  - "10"

services:
  - xvfb

before_install:
  - export CHROME_BIN=google-chrome-stable

script:
  - npm run test

addons:
  chrome: stable
  
  # This part is specific to my project. 
  # Most project might not need this.
  apt:
    sources:
    - ubuntu-toolchain-r-test
    packages:
    - g++-4.8