@thi.ng/logger
Advanced tools
Readme
[!IMPORTANT] ‼️ Announcing the thi.ng user survey 2024 📋
Please participate in the survey here!
(open until end of February)To achieve a better sample size, I'd highly appreciate if you could circulate the link to this survey in your own networks.
[!NOTE] This is one of 189 standalone projects, maintained as part of the @thi.ng/umbrella monorepo and anti-framework.
🚀 Help me to work full-time on these projects by sponsoring me on GitHub. Thank you! ❤️
Types & basis infrastructure for arbitrary logging (w/ default impls).
The types & implementations provided by this package are used in various places throughout the thi.ng/umbrella ecosystem and can be swapped out on demand to customize users' needs.
All loggers based on this basic framework provided by this package support the
following LogLevels
(in order of importance):
FINEDEBUGINFOWARNSEVERELogging calls targetting lower levels than configured in the logger will be ignored.
The following logger implementations are provided:
ConsoleLogger: writes output to consoleMemoryLogger: writes output to in-memory journalNULL_LOGGER: no-op logger, suppresses all outputLog messages can contain any number & types of arguments. No-arg functions can be provided as message arg to avoid evaluation of potentially costly message formatting for suppressed log levels. For example:
import { ConsoleLogger, LogLevel } from "@thi.ng/logger";
const logger = new ConsoleLogger("app", LogLevel.INFO);
const name = "thi.ng";
// eager (standard) arg evaluation
logger.info(`hello, ${name}`);
// [INFO] app: hello, thi.ng
// eager (standard) arg evaluation, but suppressed output
logger.debug("result is", 23 + 42);
// lazy arg evaluation
logger.info("result is", () => 23 + 42);
// [INFO] app: result is 65
STABLE - used in production
Search or submit any issues for this package
yarn add @thi.ng/logger
ES module import:
<script type="module" src="https://cdn.skypack.dev/@thi.ng/logger"></script>
For Node.js REPL:
const logger = await import("@thi.ng/logger");
Package sizes (brotli'd, pre-treeshake): ESM: 695 bytes
None
One project in this repo's /examples directory is using this package:
| Screenshot | Description | Live demo | Source |
|---|---|---|---|
 | Declarative component-based system with central rstream-based pubsub event bus | Demo | Source |
TODO
If this project contributes to an academic publication, please cite it as:
@misc{thing-logger,
title = "@thi.ng/logger",
author = "Karsten Schmidt",
note = "https://thi.ng/logger",
year = 2016
}
© 2016 - 2024 Karsten Schmidt // Apache License 2.0
FAQs
Basis types for arbitrary & hierarchical logging
The npm package @thi.ng/logger receives a total of 955 weekly downloads. As such, @thi.ng/logger popularity was classified as not popular.
We found that @thi.ng/logger demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Researchers recently demonstrated that the npm Registry is vulnerable to cache poisoning combined with DoS, posing significant risks for package availability.
Security News
The June TC39 meeting wrapped up this week with eight proposals moving on to the next stage. Here's a quick roundup of the features that the committee approved to advance.
Security News
Cyber extortion in the US and Canada hit record levels in 2023, with ransomware attacks surging and median ransom demands skyrocketing, though fewer companies are choosing to pay ransoms.