package.json

{ "scripts":
  { "prepare": "nave use 4.3.1 npm install"
  },
  "dependencies":
  { "multi-glob": "1.0.1"

  }
}

spawn-test.js

var cp = require('child_process')
var dir = __dirname + '/test/'
var childProcess = cp.spawn('npm', [ 'run', 'prepare' ], { cwd: dir })

childProcess.stdout.pipe(process.stdout)
childProcess.stderr.pipe(process.stderr)