console.js

const winston = require('winston');

var logger = new (winston.Logger)({
  // transports and whatever loggy stuffs
});

logger.extend(console);

var log = console.log;
console.log = function hijacked_log(level) {
  if (arguments.length > 1 && level in this) {
    log.apply(this, arguments);
  } else {
    var args = Array.prototype.slice.call(arguments);
    args.unshift('debug');
    log.apply(this, args);
  }
}