How can I use Morgan for logging with Winston in my Node.js application?

How can I use Morgan for logging with Winston in my Node.js application?

You can integrate Morgan with Winston by creating a custom stream for Morgan that uses Winston's logger. Here's a basic example.

Can you show me the code for that?

Sure! First, install Morgan and Winston using npm. Then, set up your logger like this:

const express = require('express');
const morgan = require('morgan');
const winston = require('winston');

const app = express();

const logger = winston.createLogger({
  transports: [
    new winston.transports.Console(),
    new winston.transports.File({ filename: 'combined.log' })
  ]
});

app.use(morgan('combined', { stream: { write: message => logger.info(message.trim()) }}));

What log formats can I use with Morgan?

Morgan provides several predefined formats like 'combined', 'common', 'dev', 'short', and 'tiny'. You can also create a custom format.

How do I create a custom log format?

You can create a custom format by passing a string or a function to Morgan. For example:

app.use(morgan(':method :url :status :res[content-length] - :response-time ms'));