Colorful console.logs in Meteor

consoleColors.js

console.col = {
    colours: {
        red: "31", // prefix with 1; for light/bold colours
        green: "32",
        yellow: "33",
        blue: "34",
        magenta: "35",
        cyan: "36",
        default: "0",
        white: "0",
    },
    addTime: Meteor.isProduction,
    log: console.log,
    warn: console.warn,
    names: {},
    name: function(name, col, options) {
        if (!console.col.colours[col]) return console.error('console.defineColour, name:', name, 'invalid colour:', col);
        console.col.names[name] = {
            col: col,
            mute: options.mute || false,
            prefix: options.prefix || false,
            addTime: (typeof options.addTime == 'undefined') ? 'default' : options.addTime,
        };
    },
};

console.col.name('sms',                 'yellow',   {prefix: true, mute: true});
console.col.name('email',               'magenta',  {prefix: true, mute: true});
console.col.name('checkAccounts',       'red',      {prefix: true, mute: true});
console.col.name('push',                'cyan',     {prefix: true, mute: true});
console.col.name('Jobs',                'blue',     {prefix: true, mute: true});
console.col.name('api',                 'green',    {prefix: true, mute: false});

console.log = function(...args) {
	try {
		var warning = args[0]=='warn' ? ' WARNING:': '';
		if (warning) args.shift();
		var col=args[0];
		// ignore the LISTENING message which tells Meteor that the server is running
		if (col=="LISTENING") return console.col.log.apply(this, args);
		var addTime = console.col.addTime;
		const timestamp = new Date().format("DDTHH:mm:ss");

		let name = console.col.names[col];
		if (!name && typeof col=='string' && !console.col.colours[col] && args.length>1 && col.length<16 && col.indexOf(":")==-1) {
			// automatically add a new definition
			name = {col: 'white', prefix: true, mute: false, addTime: 'default'};
			console.col.names[col] = name;
		}
		if (name) {
			if (name.mute && !warning) return;
			args.shift(); // remove first item so we don't output it in the console.
			if (name.prefix) args.unshift(col+":");
			if (name.addTime!='default') addTime = name.addTime;
			col = name.col;
		} else if (!console.col.colours[col]) {
			// add timestamp to start
			if (addTime) args.unshift(timestamp);
			return console.col[warning?'warn':'log'].apply(this, args);
		} else {
			args.shift(); // remove first item so we don't output it in the console.
		}

		try {
			for (var i=args.length; i--;) {
				if (typeof args[i]=='object') args[i]=JSON.stringify(args[i]);
			}
		} catch(e) {
			console.col.log.apply(this, args);
		}
		// concatenate the timestamp with the colour control codes so don't get an extra space.
		col=console.col.colours[col];
		if (warning) col+=";4";
		col+=';1'; // make all text lighter/bold
		args[0]=(addTime?timestamp+' ':'')+'\x1b['+col+'m'+args[0]+warning;
		args[args.length-1]+='\x1b['+console.col.colours.default+'m';
		return console.col.log.apply(this, args);
	} catch(e) {
		console.error("ERROR in consoleColours", e);
		return console.col.log.apply(this, args);
	}
}

console.warn = function(...args) {
    args.unshift('warn'); // add 'warn' as first argument
    return console.log.apply(this, args);
}