Log to command line in dev when using streams

[robcalcroft]

Currently we use

const pino = require('pino')(fs.createWriteStream(path.resolve(__dirname, '../../app.log')));
module.exports = pino;

to expose the logger, but I'd like to be able to have pino log to command line in development where performance is not an issue, is this possible?

[jsumners]

You should be handling logs downstream, e.g. node your_app.js > out.log. Thus, you can:

const isdebug = require('isdebug')
const pino = require('pino')
module.exports = pino({
  level: (isdebug) ? 'debug' : 'info',
  prettyPrint: isdebug
})

[robcalcroft]

Right ok, i'll work out a solution from that. Thanks 😄

[marcbachmann]

More examples I'm using in a few projects:

const pino = require('pino')

module.exports = function (config) {
  const pinoConfig = {
    level: config.level
  }

  if (config.pretty) {
    pinoConfig.prettyPrint = {
      forceColor: true,
      formatter: require('./dev_string_formatter')
    }
  }

  return pino(pinoConfig)
}

const pino = require('pino')
module.exports = function loggerFactory (logOptions = {}) {
  if ([false, 'false'].includes(logOptions.enabled)) return pino({enabled: false})
  if (![true, 'true'].includes(logOptions.pretty)) return pino(logOptions)

  const stream = require('pino-colada')()
  stream.pipe(process.stdout)
  return pino(logOptions, stream)
}

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