language: node_js
node_js:
  - "stable"
  - "10"
  - "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

Disable Node.js 11 in Travis
Disable Node.js 11 in Travis
