Dynamically change the log level in winston

[devarajchidambaram]

how to dynamically change the log level in winston which will reflect a level change in multiple files.

I have two js files, in both files, I'm including logger, Let say If I change the level of the logger in index.js, but it will not reflect in readfile.js

Here is my code

winston_logger.js

var winston = require('winston');
var logger;
module.exports.init = function (logLevel) {
      logger = new(winston.Logger)({
        transports: [
            new(winston.transports.Console)({
                level: logLevel
            })
        ],
        exitOnError: false
    });
}

module.exports.getLogger = function (config) {
    if (!module.exports.logger) {
        exports.init('info')
    }
    return logger;
}

module.exports.debugLevel = function(){
  logger.transports.console.level = 'debug'
}

Index.js

var  readFile = require('./readFile')
var winston = require('./winston_logger')
var log = winston.getLogger()
log.info("info message" );

/*Here Im changing the log level as debug*/
winston.debugLevel ();

setTimeout(function(){
    readFile(function(){})
}, 5000)

readfile.js

var  readFile = require('./readFile')
var winston = require('./winston_logger')
var log = winston.getLogger()
log.info("info message" );

/*Here Im changing the log level as debug*/
winston.debugLevel ();

setTimeout(function(){
    readFile(function(){})
}, 5000)

Don't add these as a duplicate issue. these answers are not helped me

[devarajchidambaram]

winston_logger.js

   var winston = require('winston');
    winston.configure({
        transports: [
          new (winston.transports.Console)({ timestamp: true, json : false , colorize: true}),
          new (winston.transports.File)({filename: './somefile.log' , json : true, timestamp: true })
        ]
     });

module.exports = winston;

I can able to change the log level from anywhere. Thanks.

with this basic configuration, I can run this code in production server as well?

[indexzero]

Closing as a duplicate of #1191. This is on our roadmap and will be fixed before winston@3.0.0 gets released on May 29th, 2018.