language: node_js

node_js:
  - '4'

before_install: if [[ `npm -v` != 3* ]]; then npm i -g npm@3; fi

cache:
  directories:
    - node_modules

env:
  - CXX=g++-4.8

addons:
  apt:
    sources:
      - ubuntu-toolchain-r-test
    packages:
      - g++-4.8

sudo: false