Redefine stdout and stderr as writeable file streams

logger.js

var fs = require('fs')
  , logfile = './logs/output.log'
  , errfile = './logs/error.log'

function logger(dest) {
  return function() {
    return fs.createWriteStream(dest, {flags: 'a'});
  }
}

// Redefine stdout and stderr as our output loggers
process.__defineGetter__('stdout', logger(logfile)) 
process.__defineGetter__('stderr', logger(errfile))

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