.travis.yml

# Use Trusty for a C++11 compiler, for our native dependencies:
# https://docs.travis-ci.com/user/languages/javascript-with-nodejs/#Node.js-v4-(or-io.js-v3)-compiler-requirements
# But it's also the future of Travis anyway.
dist: trusty
# Containers for faster startup, also we don’t need sudo.
sudo: false

language: node_js

node_js: 8.9.3

cache:
  directories:
    # Location of npm cache per https://docs.npmjs.com/cli/cache#cache. Shared by npx per
    # https://github.com/zkat/npx/tree/6e89dbd5989366e52d3810692b1ab5889a05fbad#description.
    - $HOME/.npm

install:
  - npx npm@$NPM_VERSION ci

# Don’t build pushes to branches other than our published branches. (This doesn’t affect PR
# builds, which are separate from branch builds in Travis. If we didn’t have this config,
# Travis would run both types of builds for PRs, consuming our concurrent builds. More info.)
branches:
  only:
    - master

script: npm run ci