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I am trying to create a sample nodeJs program to use and understand winston library for nodeJs,

I had a sample code from one of the existing projects and I am trying to create a sample code sample,

The code contains winston configuration and a simple test function to print logs using different log levels.

I'm using node version 4.6.2, I know it's pretty old but, the existing application is using the same, therefore I wanted to understand the implementation on the same version,
The example consists of the following code and a log folder, in which I wish to print the log.

Following is a sample code which I am trying to run -

var winston = require('winston');
var envData = require('dotenv').config(path: 'server.env')
require('winston-daily-rotate-file');

var levelLog = 'debug';
var winstonTransports = ;

const logDTFormat = () => (new Date().toFormat('DD MMM YYYY HH24:MI:SS'));

// Winston Rotate File Logs
var transportDailyRotate = new (winston.transports.DailyRotateFile)(
 filename: './logs/hrfid_app_',
 datePattern: 'yyyy-MM-dd.log',
 prepend: false,
 level: levelLog,
 timestamp: function() 
 var dateTime = new Date(Date.now());
 return dateTime.toFormat('DD/MM/YYYY HH24:MI:SS');
 
);

winstonTransports.push(transportDailyRotate);

// Winston Console Log 
var trasportConsole = new (winston.transports.Console)(
 timestamp: logDTFormat,
 colorize: true,
 level: levelLog
);

winstonTransports.push(trasportConsole);

// Winston Config
winston.configure(
 level: levelLog,
 transports: winstonTransports
);

const logger = winston.createLogger(
 level: 'info',
 format: winston.format.json(),
 transports: [
 //
 // - Write to all logs with level `info` and below to `combined.log` 
 // - Write all logs error (and below) to `error.log`.
 //
 new winston.transports.File( filename: 'error.log', level: 'error' ),
 new winston.transports.File( filename: 'combined.log' )
 ]
 );

 //
 // If we're not in production then log to the `console` with the format:
 // `$info.level: $info.message JSON.stringify( ...rest ) `
 // 
 if (process.env.NODE_ENV !== 'production') 
 logger.add(new winston.transports.Console(
 format: winston.format.simple()
 ));
 

// Validate Server Configuration
if (envData.error) 
 winston.error('[APP-CONFIG]:', JSON.stringify(envData.error))
 winston.error('[APP-CONFIG]:', 'Error on Server Configuration')
 return


var test = function()
 winston.error("ERROR log");
 winston.info("INFO log");
 winston.debug("DEBUG log");

test();

I am getting the following error,
Can someone please help fix my sample code?

Upgrade to node 6 or 8.

Latest winston require at least node 6.4

https://github.com/winstonjs/winston/blob/c42ab7fdc51b88db180a7dd90c52ce04ddd4e054/package.json#L69

Or use an older version of winston by deleting the existing one and execute npm install winston@2.4.4