Answers for "winston logger creating particular log file for each level"

winston logger creating particular log file for each level

const winston = require('winston');

const loggers = {
  mjson: winston.createLogger({
    level: 'info',
    format: winston.format.json(),
    transports: [new winston.transports.File({ filename: 'app-info.log'})],
  }),

  simple: winston.createLogger({
    level: 'error',
    format: winston.format.simple(),
    transports: [new winston.transports.File({ filename: 'app-error.log'}),],
  })
};


loggers.mjson.info('Information message');
loggers.mjson.error('Error message');
loggers.mjson.debug('Some message');

loggers.simple.error('Error message');
loggers.simple.info('Information message');
loggers.simple.warn('Warning message');
loggers.simple.debug('Some message');

winston logger levels

{ 
  error: 0, 
  warn: 1, 
  info: 2, 
  http: 3,
  verbose: 4, 
  debug: 5, 
  silly: 6 
}