Introduction

Lumberjack (@ngworker/lumberjack) is an Angular logging library built around log drivers: small plugins that receive structured logs and write them somewhere (the browser console, an HTTP store, a community backend, or your own sink).

You register Lumberjack once at bootstrap, enable the drivers you need, then emit logs through LumberjackService or — preferably — small application-specific logger classes.

Most apps need more than console.log: different destinations per environment, different severity filters per destination, and structured fields that survive the trip to a log store. Lumberjack keeps that plumbing out of feature code — feature code logs once, and every registered driver that accepts the log’s level receives it. How log drivers work covers the full pipeline.

What you get out of the box

Package	Role
@ngworker/lumberjack	Core: provideLumberjack, LumberjackService, loggers, types
@ngworker/lumberjack/console-driver	Browser console driver
@ngworker/lumberjack/http-driver	POST logs to an HTTP store with retries

Community drivers cover other backends; see Use a community driver.

Next steps

• Quick start — install, register, log once
• Write a logger — structured app loggers
• How log drivers work — mental model