'use strict';

function Logger(kind) {

this.color = Logger.colors[kind] || Logger.colors.info;

}

Logger.colors = {

warning: '\x1b[1;33m',

error: '\x1b[0;31m',

info: '\x1b[1;37m',

};

Logger.prototype.log = function(s) {

const date = new Date().toISOString();

console.log(this.color + date + '\t' + s);

};

// Usage

const warning = new Logger('warning');

const error = new Logger('error');

const debug = new Logger('debug');

const slow = new Logger('slow');

slow.log('I am slow logger');

warning.log('Hello');

error.log('World');

debug.log('Bye!');