os:
  - linux
  - osx
  - windows

language: node_js
node_js:
  - '8'
  - '10'
  - '11'
  - '12'

env:
  - CXX=g++-4.8
addons:
  apt:
    sources:
      - ubuntu-toolchain-r-test
    packages:
      - g++-4.9

before_install:
  - 'if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then CC=gcc-4.9; fi'
  - 'if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then CC=g++-4.9; fi'
before_script:
  - export NPMVERSION=$(echo "$($(which npm) -v)"|cut -c1)
  - 'if [[ $NPMVERSION == 5 ]]; then npm install -g npm; fi'
  - npm -v