NodeJS basic log function

// =============================================================== [ Logging ] ====
var colors = require('colors');
var moment = require('moment');
log = {
    level: 3,
    console : function(level, prefix, title, message) {
        var timestamp = moment().format('HH:MM:ss');
        if(level <= log.level && process.env.NODE_ENV !== "test" && title !== '') return console.log(prefix + ' ' + timestamp.grey + ' : ' + title.bold + ' ' + message);
        if(level <= log.level && process.env.NODE_ENV !== "test") return console.log(prefix + ' ' + timestamp.grey + ' : ' + message);
    },
    db: function(message, title, level) {
        if(_.isUndefined(level)) level = 4;
        if(_.isUndefined(title)) title = '';
        log.console(level, '[DB]   '.yellow, title, message);
    },
    debug: function(message, title, level) {
        if(_.isUndefined(level)) level = 3;
        if(_.isUndefined(title)) title = '';
        log.console(level, '[Debug]'.cyan, title, message);
    },
    info: function(message, title, level) {
        if(_.isUndefined(level)) level = 2;
        if(_.isUndefined(title)) title = '';
        log.console(level, '[Info] '.green, title, message);
    },
    error: function(message, title, level) {
        if(_.isUndefined(level)) level = 1;
        if(_.isUndefined(title)) title = '';
        log.console(level, '[Error]'.red, title, message);
    },
};

Use:

log.info('This is an info message');
log.info('This is an info message with a title', 'Title');
log.info('This is an info message with a title and a log level of 3', 'Title', 3);