Colourized timestamp

[amitav13]

I'm currently using a format like so:

const formatter = require("winston").format;
new winston.transports.Console({
          format: formatter.combine(
            formatter.timestamp(),
            formatter.colorize(),
            formatter.align(),
            formatter.printf(
              (info) => `[${info.timestamp}] ${info.level}: ${info.message}`
            )
          ),
        })

I wanted to set a colour to my timestamp, I don't see a way of doing that at this point. Adding this to the colors object would be ideal. Something like:

formatter.colorize({
              colors: {
                timestamp: "red",
              },
            })

I have a small recommendation for the default color for timestamp too: #666666, in case anyone's listening :)

[ghost]

This is already possible and I am using it in development.

You need to install chalk.

Then you can do:

const chalk = require('chalk');

const { combine, timestamp, colorize, align, printf } = winston.format;

new winston.transports.Console({
  format: combine(
    timestamp(),
    colorize(),
    align(),
    printf(
      ({ timestamp, level, message }) => chalk`[{keyword('lightblue') ${timestamp}}] ${level}: ${message}`
    )
  )
});

See chalk's documentation on tagged template literals https://github.com/chalk/chalk#tagged-template-literal

In case you're curious, this is what i'm using currently:

if (process.env.NODE_ENV !== 'production') {
  logger.add(new transports.Console({
    format: combine(
      format.splat(),
      format.colorize(),
      format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
      format.ms(),
      printf(({ timestamp, level, message, ms }) => {
        return chalk`[{keyword('lightblue') ${timestamp}}] [${level}]: ${message} {keyword('magenta') ${ms}}`
      })
    )
  }));
}

[jagcruz]

This is already possible with the winston-timestamp-colorize module, as the name says it allows you to colorize the timestamp. Example:

const winston = require("winston");
const timestampColorize = require("winston-timestamp-colorize");

const logger = winston.createLogger({
  format: winston.format.combine(
    winston.format.splat(),
    winston.format.align(),
    winston.format.timestamp(),
    winston.format.colorize(),
    timestampColorize({ color: "red" }),
    winston.format.printf(
      info => `${info.timestamp} [${info.level}]:${info.message}`
    )
  ),
  level: "debug",
  transports: [new winston.transports.Console({})]
});

logger.debug("Hello world!");

Available colors are:

• black
• red
• green
• yellow
• blue
• magenta
• cyan
• white
• gray
• grey