How to use Morgan logger?

Question

I cannot log with Morgan. It doesn\'t log info to console. The documentation doesn\'t tell how to use it.

I want to see what a variable is. This is a code from

Answer 1

I faced the same problem ago and instead, I used winston. As fellas above said, morgan is for automated logging of request/response. Winston can be configured pretty much same way as log4Net/log4J, has severity levels, different streams to which you can log etc.

For example:

npm install winston

Then, if you call the below code somewhere on you application initialization:

var winston = require('winston');

// setup default logger (no category)
winston.loggers.add('default', {
    console: {
        colorize: 'true',
        handleExceptions: true,
        json: false,
        level: 'silly',
        label: 'default',
    },
    file: {
        filename: 'some/path/where/the/log/file/reside/default.log',
        level: 'silly',
        json: false,
        handleExceptions: true,
    },
});

//
// setup logger for category `usersessions`
// you can define as many looggers as you like
//
winston.loggers.add('usersessions', {
    console: {
        level: 'silly',
        colorize: 'true',
        label: 'usersessions',
        json: false,
        handleExceptions: true,
    },
    file: {
        filename: 'some/path/where/the/log/file/reside/usersessions.log',
        level: 'silly',
        json: false,
        handleExceptions: true,
    },
});

note: before calling above code, winston.loggers is empty, i.e you dont have any loggers configured yet. Pretty much like Log4Net/J XmlConfigure methods - you need to first call them, to init your logging.

Then, later wherever in you application server side code you may do:

var winston = require('winston');
// log instances as defined in first snippet
var defaultLog = winston.loggers.get('default'); 
var userSessionsLog = winston.loggers.get('usersessions');

defaultLog.info('this goes to file default.log');
userSessionsLog.debug('this goes to file usersessions.log')

Hope that helps.

for further documentation reference: https://www.npmjs.com/package/winston