language: node_js

# Allow Travis tests to run in containers.
sudo: false

node_js:
#  - "4"
  - "6"
  - "8"

cache:
  directories:
    - $HOME/.npm

install:
  - npm config set spin=false
  - npm install -g coveralls
  - npm install
  - npm install graphql@$GRAPHQL_VERSION

script:
  - npm run lint
  - npm test -- --coverage
  - coveralls < ./coverage/lcov.info || true # if coveralls doesn't have it covered

env:
#  - GRAPHQL_VERSION='^0.10'
#  - GRAPHQL_VERSION='^0.11'
  - GRAPHQL_VERSION='^0.12'