Extends n (https://github.com/tj/n) to pick node version from .node-version or package.json

n-shim.js

n() {
  # forward straght to n
  [[ $# > 0 ]] && {
    command n "$@"
    return
  }

  # look for a version

  [[ -f .node-version ]] && {
    command n $(cat .node-version) && node --version
    return
  }

  [[ -f package.json ]] && {
    if command -v jq > /dev/null; then
      command n $(jq -r .engines.node package.json | awk '{print $2}') && node --version
      return
    else
      echo "could not parse package.json, missing jq — please 'brew install jq'"
    fi
  }

  # use interactive picker

  command n
}