Travis configuration for Angular2

.travis.yml

os:
  - linux
services:
  - docker
language: node_js
node_js:
  - "8.4.0"
addons:
  apt:
    sources:
    - google-chrome
    packages:
    - google-chrome-stable
cache:
  yarn: true
  directories:
    - $HOME/.yarn-cache
    - node_modules
before_install:
  - export CHROME_BIN=/usr/bin/google-chrome
  - export DISPLAY=:99.0
  - sh -e /etc/init.d/xvfb start
  # Repo for Yarn
  - curl -o- -L https://yarnpkg.com/install.sh | bash
  - export PATH=$HOME/.yarn/bin:$PATH
  - yarn global add @angular/cli
install:
  - yarn install
  - npm install coveralls
script:
  - ng test --coverage --watch false
  - ng e2e
after_success:
  - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js