winston:how to change timestamp format

Question

I am using winston to add log details in node.js, i used the following procedure to add the logs

 var winston = require('winston');         
 winston.remove(winston.transports.Console);
 winston.add(winston.transports.Console, {'timestamp':true,'colorize':true);
 winston.log('info','jjjj');

the output that i got is

2012-12-21T09:32:05.428Z - info: jjjj

I need to specify a format for mytimestamp , is there any provision to do so in winston any help will be much appreciated

score 50 · Accepted Answer · edited Jul 16 '17 at 20:43

50

The timestamp option can be a function that returns what you wish it to be saved as...

Line 4:

winston.add(winston.transports.Console, {'timestamp':function() {return '111111111'; },'colorize':true});

Source here: https://github.com/flatiron/winston/pull/120

edited Jul 16 '17 at 20:43

pixelpax

1,435
13
22

answered Dec 21 '12 at 12:21

Ben Evans

1,567
16
15

175

Do you realise you answered this question on the 21/12/12 at 12:21?! And it was a question about date formatting no less :) – Alex MDC Aug 07 '13 at 20:32
@yuyue007 seems to work for File transport in version 0.9.0 of winston. – Default Feb 18 '15 at 22:03

Chris Peng · Answer 2 · 2019-07-16T10:07:29.310

29

winston@3 version

winston.createLogger({
  format: winston.format.combine(
    winston.format.timestamp({format: 'YYYY-MM-DD HH:mm:ss'}),
    winston.format.prettyPrint()
  ),
  transports: [
    new winston.transports.Console()
  ]
})

To support timezone, you need to change format to a function which winston will call.

const timezoned = () => {
  return new Date().toLocaleString('en-US', {
    timeZone: 'Asia/Shanghai'
  });
};

const logger = createLogger({
  format: combine(
    timestamp({
      format: timezonedTime
    })
  ),
  transport: [
    new transports.Console(),
  ]
});

edited Jul 16 '19 at 10:07

answered Jul 27 '18 at 08:11

Chris Peng

896
1
10
23

1

How to change the timezone. Winston by default displays the timestamp in UTC format? – Sagar Khan Jul 16 '19 at 08:24
I've updated the answer. Here is an old post I wrote when I was learning winston. https://medium.com/@ThreePotatoteers/winston-3-customize-timestamp-format-f510ce03b33d – Chris Peng Jul 16 '19 at 10:09

score 3 · Answer 3 · edited Aug 30 '20 at 13:58

3

For a good result, you may use momentjs:

const moment = require('moment');
...
...
timestamp: () => moment().format('YYYY-MM-DD hh:mm:ss')

edited Aug 30 '20 at 13:58

mb870977

51
8

answered May 29 '17 at 07:49

Burhan Mubarok

358
2
8

score 3 · Answer 4 · edited Jul 19 '21 at 16:41

To change the timestamp format in winston log format,we can pass either a string or a function that return a string as a argument to the winston.format.timestamp(format) function which takes format parameter.In addition,we can use combine function to customize the log format

 const LOG_FORMAT = WINSTON.format.combine(
    WINSTON.format.align(),
    WINSTON.format.timestamp({format:'DD-MM-YYYY T hh:mm:ss.sss A'}),
    
    WINSTON.format.printf(({ level, message, timestamp, label }) => {
        return `[ ${level.toUpperCase()} | ${timestamp} | LOG:${message} ]`;
    })
)
    const APP_LOGGER = WINSTON.createLogger({
    format: LOG_FORMAT,
    transports: [
        new WINSTON.transports.Console(),
        new WINSTON.transports.File({
            filename: './logs/app.log'
        })
    ]
})

winston:how to change timestamp format

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