winston timer not printing time - node.js

Question

I am running this example given in winston timer documentation -
const winston = require('winston');
const logger = winston.createLogger({
level: 'silly',
format: winston.format.simple(),
});
logger.add(new winston.transports.Console({
format: winston.format.simple(),
}));
require('winston-timer')(logger, {"useColors":false});
logger.start_log('something', 'silly');
logger.stop_log('something', 'silly');
and in the output I am supposed to see the time, but I am seeing this instead -
nodejstutorials % node winstontimerbasic.js
silly: Starting timer "something"
silly: Finished timer "something" in
I don't see the elapsed time in the output. I am not sure what am I missing while going through the documentation. Please help.

Answer 1

If you want to use timestamp option you should say that when you're creating winston instance.
Change your winston import with this:
const winston, { format } = require('winston');
Destructure required properties from format:
const { combine, timestamp, printf } = format;
Create custom print option when you're creating your winston instance:
const logger = winston.createLogger({
level: "error",
format: combine(
format.errors({ stack: true }), // log the full stack
timestamp(), // get the time stamp part of the full log message
printf(({ level, message, timestamp, stack }) => {
// formating the log outcome to show/store
return `${level === "error" ? "❌" : "✅"} ${level}: ${message} ${
level === "error" ? "| 🕗 " + timestamp.substring(0, 19) : ""
} ${"\n"} ${level === "error" ? stack : ""}`;
}),
format.metadata() // >>>> ADD THIS LINE TO STORE the ERR OBJECT IN META field
),
transports: [
new winston.transports.Console({ level: "info" }),
new winston.transports.File({ filename: "logs.log", level: "info" }),
],
});
This will create a custom printf option for your winston logger. You can export it and you it like:
logger.error(error)
logger.info("this is an info")
And of course you can custumize printf option accordion to your taste