Very simple logger class

simple-logger.js

function Logger(loggerName) {
    this.loggerName = loggerName || 'logger';
    this.date = new Date;
}

(function (prototype) {
    prototype.time = function () {
        var time = [
            this.date.getHours(),
            this.date.getMinutes(),
            this.date.getSeconds()
        ];

        time = time.map(function (e) {
            if (e.length == 1) {
                return '0' + e;
            } else {
                return e;
            }
        });

        return time.join(':');
    };

    prototype.prefix = function () {
        return '[' + this.time() + ']' + ' ' + this.loggerName + ': ';
    }

    prototype.log = function (input) {
        console.log(this.prefix() + input);
    };

    prototype.warn = function (input) {
        console.warn(this.prefix() + input);
    };

    prototype.error = function (input) {
        console.error(this.prefix() + input);
    };

    prototype.info = function (input) {
        console.info(this.prefix() + input);
    };
})(Logger.prototype);

module.exports = Logger;