server/util/logger.js
var log4js = require('log4js');
var LogWrapper = function() {
this.logger = log4js.getLogger('socket.io');
};
['error','warn','info','debug'].forEach(function (levelString) {
LogWrapper.prototype[levelString] = function() {
this.logger[levelString].apply(this.logger, arguments);
}
});
module.exports = LogWrapper;