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loo

v4.0.0

Published

Minimalistic streaming logger with layered transport system

Downloads

8

Readme

loo

Minimalistic streaming logger with a layered transport and custom field support.

Uses the same output format as bole, so tools like bistre and garnish will work great.

Installation

npm i loo

Example

let log = require('loo')

// application logging
let app = log('app')

// direct everything to a papertrail stream
app.pipe(papertrail(creds))

// direct error & fatal levels to process.stderr
app.error.pipe(process.stderr)
app.fatal.pipe(process.stderr)

// postgres service logging
let postgres = app('postgres')

// log the postgres debug & info events to stdout
postgres.debug.pipe(process.stdout)
postgres.info.pipe(process.stdout)

let query = 'SELECT * FROM teams'
let client = Postgres(url)

// add custom fields
postgres.debug.fields({ client: client.id })

// log out with printf support
postgres.debug('running query %s', query)

Levels

  • trace: finer-grained informational events than the debug
  • debug: fine-grained informational events that are most useful to debug an application
  • info: informational messages that highlight the progress of the application at coarse-grained level
  • warn: potentially harmful situations
  • error: error events that might still allow the application to continue running.
  • fatal: very severe error events that will presumably lead the application to abort.

Tests

npm install
npm test

License

MIT