nodeLogging.js

// Requires prototype found at https://gist.github.com/ItzArty/96e7439a63ac3800335ecb72a63d255c

console.clear( );

if( !fs.existsSync('./logs') ) fs.mkdirSync('./logs');

var d = new Date( );

var logName = d.getDate( ).placeFormat( 2 ) + '-' + ( d.getMonth( ) + 1 ).placeFormat( 2 ) + '-' + d.getFullYear( );

var logNameFound = true;
var logNameInc = 1;

var logFileName = logName + '.log';

if( fs.existsSync( './logs/' + logName + '.log' ) ) logNameFound = false;

while( logNameFound == false ) {

	if( !fs.existsSync( './logs/' + logName + '-' + logNameInc + '.log' ) ) {

		logFileName = logName + '-' + logNameInc + '.log';

		logNameFound = true;

	}else{

		logNameInc++;

	}

}

fs.writeFile( './logs/' + logFileName, 'New session started...', ( err ) => {

	if( err ) {

		console.error('Unable to create log file, exitting...');

		console.log( err );

		process.exit( );

	}

});

function log( message, type ) {

	if( !type ) type = "info";

	var prefix, suffix;
	var d = new Date( );

	const date = d.getDate( ).placeFormat( 2 ) + "/" + ( d.getMonth( ) + 1 ).placeFormat( 2 ) + "/" + d.getFullYear( ) + " " + d.getHours( ).placeFormat( 2 ) + ":" + d.getMinutes( ).placeFormat( 2 ) + ":" + d.getSeconds( ).placeFormat( 2 );

	const prefixes = {

		default: "Info",
		info: "Info",
		warning: "Warn",
		error: "Error"

	}

	console.log( date + " [ " + type.switch( prefixes ).toUpperCase( ) + "\x1b[0m ]: " + message + "\x1b[0m" );

	fs.appendFile( './logs/' + logFileName, '\n' + date + " [ " + type.switch( prefixes ).toUpperCase( ) + " ]: " + message, ( err ) => {

		if( err ) console.error('Unable to append to the log file!');

	});

}