pino

super fast, all natural json logger

Usage no npm install needed!

<script type="module">
  import pino from 'https://cdn.skypack.dev/pino';
</script>

README

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pino

npm version Build Status Known Vulnerabilities Coverage Status js-standard-style TypeScript definitions on DefinitelyTyped

Very low overhead Node.js logger.

Documentation

Install

$ npm install pino@next

If you would like to install pino v6, refer to https://github.com/pinojs/pino/tree/v6.x.

Usage

const logger = require('pino')()

logger.info('hello world')

const child = logger.child({ a: 'property' })
child.info('hello child!')

This produces:

{"level":30,"time":1531171074631,"msg":"hello world","pid":657,"hostname":"Davids-MBP-3.fritz.box"}
{"level":30,"time":1531171082399,"msg":"hello child!","pid":657,"hostname":"Davids-MBP-3.fritz.box","a":"property"}

For using Pino with a web framework see:

Essentials

Development Formatting

The pino-pretty module can be used to format logs during development:

pretty demo

Transports & Log Processing

Due to Node's single-threaded event-loop, it's highly recommended that sending, alert triggering, reformatting and all forms of log processing be conducted in a separate process or thread.

In Pino terminology we call all log processors "transports", and recommend that the transports be run in a worker thread using our pino.transport API.

For more details see our Transports⇗ document.

Low overhead

Using minimum resources for logging is very important. Log messages tend to get added over time and this can lead to a throttling effect on applications – such as reduced requests per second.

In many cases, Pino is over 5x faster than alternatives.

See the Benchmarks document for comparisons.

The Team

Matteo Collina

https://github.com/pinojs

https://www.npmjs.com/~matteo.collina

https://twitter.com/matteocollina

David Mark Clements

https://github.com/davidmarkclements

https://www.npmjs.com/~davidmarkclements

https://twitter.com/davidmarkclem

James Sumners

https://github.com/jsumners

https://www.npmjs.com/~jsumners

https://twitter.com/jsumners79

Thomas Watson Steen

https://github.com/watson

https://www.npmjs.com/~watson

https://twitter.com/wa7son

Contributing

Pino is an OPEN Open Source Project. This means that:

Individuals making significant and valuable contributions are given commit-access to the project to contribute as they see fit. This project is more like an open wiki than a standard guarded open source project.

See the CONTRIBUTING.md file for more details.

Acknowledgements

This project was kindly sponsored by nearForm.

Logo and identity designed by Cosmic Fox Design: https://www.behance.net/cosmicfox.

License

Licensed under MIT.