language: node_js
node_js:
  - "stable"
  - "8"
  - "6"
cache:
  directories:
    - node_modules
before_install:
- npm prune
- npm update

language: node_js
node_js:
  - "stable"
  - "10"
  - "8"
  - "6"
cache:
  directories:
    - node_modules
before_install:
- npm prune
- npm update

Add Node.js 10 to Travis
Add Node.js 10 to Travis
