gistfile1.js

  var profiles = {
    production: {
      logFile: function(){ config.logFile || false },
      debug: false,
      info: false,
      warn: false,
      fatal: true
    },
    development: {
      logFile: function(){ config.logFile || false },
      debug: true,
      info: true,
      warn: true,
      fatal: true
    }    
  }

// accessing:

  file = [process.cwd(),profiles[config.environment]['logFile']].join('/')