Node 4 LTS on CircleCI

gistfile1.txt

machine:
  node:
    version: 4.2.2

# From for occasional ELIFECYCLE errors compiling microtime
# https://discuss.circleci.com/t/using-node-js-4-0-on-circleci/26
# Modified to use 'pre' rather than 'override' so 'npm install' runs
# See https://circleci.com/docs/configuration
dependencies:
  pre:
    - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test && sudo apt-get update
    - sudo apt-get install -y gcc-4.9 g++-4.9
    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 10
    - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.6 10
    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 20
    - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.9 20
    # Circle uses npm v2 by default
    - npm install -g npm@3.x.x