in-folder/.travis.yml

Temporarily change directories to run a callback

language: node_js
node_js:
  - "6.10"
  - "7.7"
matrix:
  include:
    - node_js: "8.0"
      env: "NVM_NODEJS_ORG_MIRROR=https://nodejs.org/download/nightly"
  allow_failures:
    # Allow the nightly installs to fail
    - env: "NVM_NODEJS_ORG_MIRROR=https://nodejs.org/download/nightly"
sudo: false
cache:
  directories:
    - node_modules
before_install:
  # Remove all non-test dependencies
  # Update Node.js modules
  - "test ! -d node_modules || npm prune"
  - "test ! -d node_modules || npm rebuild"
script: "yarn run coverage"
after_script: "cat ./coverage/lcov.info | coveralls"