Hashtag

#LogTape

50 posts tagged with this hashtag.

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

2.2.0 is out!

The headline is two new packages:

@logtape/lint adds lint rules for ESLint v8/v9 (flat config), Oxlint, and Deno Lint that catch common logging mistakes before they reach production: template literal interpolation in message arguments, eager property evaluation where lazy is needed, unawaited async log callbacks, and missing meta sink configuration.

@logtape/testing gives you createLogRecorder() and domain-aware assertion helpers, replacing the hand-rolled array-sink boilerplate that every project ends up writing.

Other highlights:

  • context: true on Express/Hono/Koa/Elysia middleware handles request ID generation, x-request-id header propagation, and implicit context. One option instead of several moving parts.

  • Seven performance optimizations on the enabled-logging hot path

  • New logtape.org website

Full release notes: https://github.com/dahlia/logtape/discussions/179

github.com

LogTape 2.2.0: Lint rules, testing utilities, and request context · dahlia/logtape · Discussion #179

LogTape is a logging library for JavaScript and TypeScript that works across Deno, Node.js, Bun, and browsers. It's built around structured logging, has zero dependencies, and is designed to work a...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

2.2.0 is out!

The headline is two new packages:

@logtape/lint adds lint rules for ESLint v8/v9 (flat config), Oxlint, and Deno Lint that catch common logging mistakes before they reach production: template literal interpolation in message arguments, eager property evaluation where lazy is needed, unawaited async log callbacks, and missing meta sink configuration.

@logtape/testing gives you createLogRecorder() and domain-aware assertion helpers, replacing the hand-rolled array-sink boilerplate that every project ends up writing.

Other highlights:

  • context: true on Express/Hono/Koa/Elysia middleware handles request ID generation, x-request-id header propagation, and implicit context. One option instead of several moving parts.

  • Seven performance optimizations on the enabled-logging hot path

  • New logtape.org website

Full release notes: https://github.com/dahlia/logtape/discussions/179

github.com

LogTape 2.2.0: Lint rules, testing utilities, and request context · dahlia/logtape · Discussion #179

LogTape is a logging library for JavaScript and TypeScript that works across Deno, Node.js, Bun, and browsers. It's built around structured logging, has zero dependencies, and is designed to work a...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

2.2.0 is out!

The headline is two new packages:

@logtape/lint adds lint rules for ESLint v8/v9 (flat config), Oxlint, and Deno Lint that catch common logging mistakes before they reach production: template literal interpolation in message arguments, eager property evaluation where lazy is needed, unawaited async log callbacks, and missing meta sink configuration.

@logtape/testing gives you createLogRecorder() and domain-aware assertion helpers, replacing the hand-rolled array-sink boilerplate that every project ends up writing.

Other highlights:

  • context: true on Express/Hono/Koa/Elysia middleware handles request ID generation, x-request-id header propagation, and implicit context. One option instead of several moving parts.

  • Seven performance optimizations on the enabled-logging hot path

  • New logtape.org website

Full release notes: https://github.com/dahlia/logtape/discussions/179

github.com

LogTape 2.2.0: Lint rules, testing utilities, and request context · dahlia/logtape · Discussion #179

LogTape is a logging library for JavaScript and TypeScript that works across Deno, Node.js, Bun, and browsers. It's built around structured logging, has zero dependencies, and is designed to work a...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

2.2.0 is out!

The headline is two new packages:

@logtape/lint adds lint rules for ESLint v8/v9 (flat config), Oxlint, and Deno Lint that catch common logging mistakes before they reach production: template literal interpolation in message arguments, eager property evaluation where lazy is needed, unawaited async log callbacks, and missing meta sink configuration.

@logtape/testing gives you createLogRecorder() and domain-aware assertion helpers, replacing the hand-rolled array-sink boilerplate that every project ends up writing.

Other highlights:

  • context: true on Express/Hono/Koa/Elysia middleware handles request ID generation, x-request-id header propagation, and implicit context. One option instead of several moving parts.

  • Seven performance optimizations on the enabled-logging hot path

  • New logtape.org website

Full release notes: https://github.com/dahlia/logtape/discussions/179

github.com

LogTape 2.2.0: Lint rules, testing utilities, and request context · dahlia/logtape · Discussion #179

LogTape is a logging library for JavaScript and TypeScript that works across Deno, Node.js, Bun, and browsers. It's built around structured logging, has zero dependencies, and is designed to work a...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

I've opened a proposal for to support configuration from plain objects, making it possible to load configs from JSON/YAML/TOML files.

The idea is similar to Python's logging.config.dictConfig()—you'd be able to configure sinks, formatters, and loggers declaratively, making it easier to manage different configs for dev/staging/prod without touching code.

Would love to hear your thoughts, especially if you've worked with similar patterns in other ecosystems.

https://github.com/dahlia/logtape/issues/117

github.com

Support configuration from plain objects · Issue #117 · dahlia/logtape

Summary Add a new @logtape/config package that provides configureFromObject() function to configure LogTape from plain JavaScript objects loaded from JSON, YAML, TOML, or other configuration format...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

I've opened a proposal for to support configuration from plain objects, making it possible to load configs from JSON/YAML/TOML files.

The idea is similar to Python's logging.config.dictConfig()—you'd be able to configure sinks, formatters, and loggers declaratively, making it easier to manage different configs for dev/staging/prod without touching code.

Would love to hear your thoughts, especially if you've worked with similar patterns in other ecosystems.

https://github.com/dahlia/logtape/issues/117

github.com

Support configuration from plain objects · Issue #117 · dahlia/logtape

Summary Add a new @logtape/config package that provides configureFromObject() function to configure LogTape from plain JavaScript objects loaded from JSON, YAML, TOML, or other configuration format...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

I implemented data redaction for today. The feature will be available through a dedicated package called @logtape/redaction (JSR & npm). It provides two complementary approaches to protect sensitive information in your logs:

  1. Pattern-based redaction: Uses regex patterns to identify and mask sensitive data in formatted log output
  2. Field-based redaction: Redacts properties by field names in structured log data

Looking forward to releasing this with LogTape 0.10.0 soon!

unstable.logtape.org

Data redaction | LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

I implemented data redaction for today. The feature will be available through a dedicated package called @logtape/redaction (JSR & npm). It provides two complementary approaches to protect sensitive information in your logs:

  1. Pattern-based redaction: Uses regex patterns to identify and mask sensitive data in formatted log output
  2. Field-based redaction: Redacts properties by field names in structured log data

Looking forward to releasing this with LogTape 0.10.0 soon!

unstable.logtape.org

Data redaction | LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Just released 0.9.0! 🎉

This version brings two major improvements to our zero-dependency library for :

  1. New Synchronous Configuration API: You can now configure LogTape synchronously with configureSync(), disposeSync(), and resetSync(). Perfect for simpler setups where you don't need async operations!

  2. Better Runtime Compatibility: We've moved all file-related components to a separate @logtape/file package. This means the core package now works flawlessly across all JavaScript environments—browsers, edge functions, and various bundlers without any file system dependencies.

Plus, we've added level mapping options for console sinks, giving you more control over how your logs appear.

Check out the full release notes for migration details:

https://hackers.pub/@hongminhee/2025/logtape-090

hackers.pub

Hackers' Pub

洪 民憙 (Hong Minhee)
@hongminhee@hackers.pub

We're excited to announce the release of LogTape 0.9.0! This version brings important improvements to make LogTape more flexible across different JavaScript environments while simplifying configuration for common use cases.

What's New

  • Synchronous Configuration API: Added new synchronous configuration functions for environments where async operations aren't needed or desired
  • Improved Runtime Compatibility: Moved file-system dependent components to a separate package for better cross-runtime support

New Features

Synchronous Configuration API: Simplifying Your Setup

Added synchronous versions of the configuration functions:

These functions offer a simpler API for scenarios where async operations aren't needed, allowing for more straightforward code without awaiting promises. Note that these functions cannot use sinks or filters that require asynchronous disposal (such as stream sinks), but they work perfectly for most common logging configurations.

import { configureSync, getConsoleSink } from "@logtape/logtape";

configureSync({ 
  sinks: {
    console: getConsoleSink(),
  },
  loggers: [
    {
      category: "my-app",
      lowestLevel: "info",
      sinks: ["console"],
    },
  ],
});

Console Sink Enhancements

Breaking Changes

File Sinks Moved to Separate Package: Better Cross-Platform Support

To improve runtime compatibility, file-related sinks have been moved to the @logtape/file package:

This architectural change ensures the core @logtape/logtape package is fully compatible with all JavaScript runtimes, including browsers and edge functions, without introducing file system dependencies. You'll now enjoy better compatibility with bundlers like Webpack, Rollup, and Vite that previously had issues with the file system imports.

Migration Guide

If you were using file sinks, update your imports:

// Before
import { getFileSink, getRotatingFileSink } from "@logtape/logtape";

// After
import { getFileSink, getRotatingFileSink } from "@logtape/file";

Don't forget to install the new package:

# For npm, pnpm, Yarn, Bun
npm add @logtape/file

# For Deno
deno add jsr:@logtape/file

Looking Forward

This release represents our ongoing commitment to making LogTape the most flexible and developer-friendly logging solution for JavaScript and TypeScript applications. We're continuing to improve performance and extend compatibility across the JavaScript ecosystem.

Contributors

Special thanks to Murph Murphy for their valuable contribution to this release.

As always, we welcome your feedback and contributions! Feel free to open issues or pull requests on our GitHub repository.

Happy logging!

github.com

GitHub - dahlia/logtape: Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions - dahlia/logtape

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social · Reply to 洪 民憙 (Hong Minhee) :nonbinary:

0.9.0をリリースしました！🎉

今回のバージョンでは、TypeScript向けの依存関係ゼロのロギングライブラリに二つの大きな改善を加えました：

  1. 新しい同期設定API：configureSync()、disposeSync()、resetSync()を使って同期的にLogTapeを設定できるようになりました。非同期操作が不要なシンプルな環境に最適です！

  2. ランタイム互換性の向上：ファイル関連のコンポーネントをすべて別パッケージ@logtape/fileに移動しました。これにより、コアパッケージはファイルシステム依存なしで、ブラウザ、エッジ関数、各種バンドラーなど、あらゆるJavaScript環境でシームレスに動作します。

さらに、コンソールシンクにレベルマッピングオプションを追加し、ログの表示方法をより細かく制御できるようになりました。

移行の詳細については、リリースノートをご覧ください。

https://zenn.dev/hongminhee/articles/98989e400c5fcf

zenn.dev

LogTape 0.9.0 リリース：同期設定APIとランタイム互換性の向上

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Just released 0.9.0! 🎉

This version brings two major improvements to our zero-dependency library for :

  1. New Synchronous Configuration API: You can now configure LogTape synchronously with configureSync(), disposeSync(), and resetSync(). Perfect for simpler setups where you don't need async operations!

  2. Better Runtime Compatibility: We've moved all file-related components to a separate @logtape/file package. This means the core package now works flawlessly across all JavaScript environments—browsers, edge functions, and various bundlers without any file system dependencies.

Plus, we've added level mapping options for console sinks, giving you more control over how your logs appear.

Check out the full release notes for migration details:

https://hackers.pub/@hongminhee/2025/logtape-090

hackers.pub

Hackers' Pub

洪 民憙 (Hong Minhee)
@hongminhee@hackers.pub

We're excited to announce the release of LogTape 0.9.0! This version brings important improvements to make LogTape more flexible across different JavaScript environments while simplifying configuration for common use cases.

What's New

  • Synchronous Configuration API: Added new synchronous configuration functions for environments where async operations aren't needed or desired
  • Improved Runtime Compatibility: Moved file-system dependent components to a separate package for better cross-runtime support

New Features

Synchronous Configuration API: Simplifying Your Setup

Added synchronous versions of the configuration functions:

These functions offer a simpler API for scenarios where async operations aren't needed, allowing for more straightforward code without awaiting promises. Note that these functions cannot use sinks or filters that require asynchronous disposal (such as stream sinks), but they work perfectly for most common logging configurations.

import { configureSync, getConsoleSink } from "@logtape/logtape";

configureSync({ 
  sinks: {
    console: getConsoleSink(),
  },
  loggers: [
    {
      category: "my-app",
      lowestLevel: "info",
      sinks: ["console"],
    },
  ],
});

Console Sink Enhancements

Breaking Changes

File Sinks Moved to Separate Package: Better Cross-Platform Support

To improve runtime compatibility, file-related sinks have been moved to the @logtape/file package:

This architectural change ensures the core @logtape/logtape package is fully compatible with all JavaScript runtimes, including browsers and edge functions, without introducing file system dependencies. You'll now enjoy better compatibility with bundlers like Webpack, Rollup, and Vite that previously had issues with the file system imports.

Migration Guide

If you were using file sinks, update your imports:

// Before
import { getFileSink, getRotatingFileSink } from "@logtape/logtape";

// After
import { getFileSink, getRotatingFileSink } from "@logtape/file";

Don't forget to install the new package:

# For npm, pnpm, Yarn, Bun
npm add @logtape/file

# For Deno
deno add jsr:@logtape/file

Looking Forward

This release represents our ongoing commitment to making LogTape the most flexible and developer-friendly logging solution for JavaScript and TypeScript applications. We're continuing to improve performance and extend compatibility across the JavaScript ecosystem.

Contributors

Special thanks to Murph Murphy for their valuable contribution to this release.

As always, we welcome your feedback and contributions! Feel free to open issues or pull requests on our GitHub repository.

Happy logging!

github.com

GitHub - dahlia/logtape: Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions - dahlia/logtape

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Just released 0.9.0! 🎉

This version brings two major improvements to our zero-dependency library for :

  1. New Synchronous Configuration API: You can now configure LogTape synchronously with configureSync(), disposeSync(), and resetSync(). Perfect for simpler setups where you don't need async operations!

  2. Better Runtime Compatibility: We've moved all file-related components to a separate @logtape/file package. This means the core package now works flawlessly across all JavaScript environments—browsers, edge functions, and various bundlers without any file system dependencies.

Plus, we've added level mapping options for console sinks, giving you more control over how your logs appear.

Check out the full release notes for migration details:

https://hackers.pub/@hongminhee/2025/logtape-090

hackers.pub

Hackers' Pub

洪 民憙 (Hong Minhee)
@hongminhee@hackers.pub

We're excited to announce the release of LogTape 0.9.0! This version brings important improvements to make LogTape more flexible across different JavaScript environments while simplifying configuration for common use cases.

What's New

  • Synchronous Configuration API: Added new synchronous configuration functions for environments where async operations aren't needed or desired
  • Improved Runtime Compatibility: Moved file-system dependent components to a separate package for better cross-runtime support

New Features

Synchronous Configuration API: Simplifying Your Setup

Added synchronous versions of the configuration functions:

These functions offer a simpler API for scenarios where async operations aren't needed, allowing for more straightforward code without awaiting promises. Note that these functions cannot use sinks or filters that require asynchronous disposal (such as stream sinks), but they work perfectly for most common logging configurations.

import { configureSync, getConsoleSink } from "@logtape/logtape";

configureSync({ 
  sinks: {
    console: getConsoleSink(),
  },
  loggers: [
    {
      category: "my-app",
      lowestLevel: "info",
      sinks: ["console"],
    },
  ],
});

Console Sink Enhancements

Breaking Changes

File Sinks Moved to Separate Package: Better Cross-Platform Support

To improve runtime compatibility, file-related sinks have been moved to the @logtape/file package:

This architectural change ensures the core @logtape/logtape package is fully compatible with all JavaScript runtimes, including browsers and edge functions, without introducing file system dependencies. You'll now enjoy better compatibility with bundlers like Webpack, Rollup, and Vite that previously had issues with the file system imports.

Migration Guide

If you were using file sinks, update your imports:

// Before
import { getFileSink, getRotatingFileSink } from "@logtape/logtape";

// After
import { getFileSink, getRotatingFileSink } from "@logtape/file";

Don't forget to install the new package:

# For npm, pnpm, Yarn, Bun
npm add @logtape/file

# For Deno
deno add jsr:@logtape/file

Looking Forward

This release represents our ongoing commitment to making LogTape the most flexible and developer-friendly logging solution for JavaScript and TypeScript applications. We're continuing to improve performance and extend compatibility across the JavaScript ecosystem.

Contributors

Special thanks to Murph Murphy for their valuable contribution to this release.

As always, we welcome your feedback and contributions! Feel free to open issues or pull requests on our GitHub repository.

Happy logging!

github.com

GitHub - dahlia/logtape: Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions - dahlia/logtape

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social · Reply to 洪 民憙 (Hong Minhee) :nonbinary:

0.9.0をリリースしました！🎉

今回のバージョンでは、TypeScript向けの依存関係ゼロのロギングライブラリに二つの大きな改善を加えました：

  1. 新しい同期設定API：configureSync()、disposeSync()、resetSync()を使って同期的にLogTapeを設定できるようになりました。非同期操作が不要なシンプルな環境に最適です！

  2. ランタイム互換性の向上：ファイル関連のコンポーネントをすべて別パッケージ@logtape/fileに移動しました。これにより、コアパッケージはファイルシステム依存なしで、ブラウザ、エッジ関数、各種バンドラーなど、あらゆるJavaScript環境でシームレスに動作します。

さらに、コンソールシンクにレベルマッピングオプションを追加し、ログの表示方法をより細かく制御できるようになりました。

移行の詳細については、リリースノートをご覧ください。

https://zenn.dev/hongminhee/articles/98989e400c5fcf

zenn.dev

LogTape 0.9.0 リリース：同期設定APIとランタイム互換性の向上

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Just released 0.9.0! 🎉

This version brings two major improvements to our zero-dependency library for :

  1. New Synchronous Configuration API: You can now configure LogTape synchronously with configureSync(), disposeSync(), and resetSync(). Perfect for simpler setups where you don't need async operations!

  2. Better Runtime Compatibility: We've moved all file-related components to a separate @logtape/file package. This means the core package now works flawlessly across all JavaScript environments—browsers, edge functions, and various bundlers without any file system dependencies.

Plus, we've added level mapping options for console sinks, giving you more control over how your logs appear.

Check out the full release notes for migration details:

https://hackers.pub/@hongminhee/2025/logtape-090

hackers.pub

Hackers' Pub

洪 民憙 (Hong Minhee)
@hongminhee@hackers.pub

We're excited to announce the release of LogTape 0.9.0! This version brings important improvements to make LogTape more flexible across different JavaScript environments while simplifying configuration for common use cases.

What's New

  • Synchronous Configuration API: Added new synchronous configuration functions for environments where async operations aren't needed or desired
  • Improved Runtime Compatibility: Moved file-system dependent components to a separate package for better cross-runtime support

New Features

Synchronous Configuration API: Simplifying Your Setup

Added synchronous versions of the configuration functions:

These functions offer a simpler API for scenarios where async operations aren't needed, allowing for more straightforward code without awaiting promises. Note that these functions cannot use sinks or filters that require asynchronous disposal (such as stream sinks), but they work perfectly for most common logging configurations.

import { configureSync, getConsoleSink } from "@logtape/logtape";

configureSync({ 
  sinks: {
    console: getConsoleSink(),
  },
  loggers: [
    {
      category: "my-app",
      lowestLevel: "info",
      sinks: ["console"],
    },
  ],
});

Console Sink Enhancements

Breaking Changes

File Sinks Moved to Separate Package: Better Cross-Platform Support

To improve runtime compatibility, file-related sinks have been moved to the @logtape/file package:

This architectural change ensures the core @logtape/logtape package is fully compatible with all JavaScript runtimes, including browsers and edge functions, without introducing file system dependencies. You'll now enjoy better compatibility with bundlers like Webpack, Rollup, and Vite that previously had issues with the file system imports.

Migration Guide

If you were using file sinks, update your imports:

// Before
import { getFileSink, getRotatingFileSink } from "@logtape/logtape";

// After
import { getFileSink, getRotatingFileSink } from "@logtape/file";

Don't forget to install the new package:

# For npm, pnpm, Yarn, Bun
npm add @logtape/file

# For Deno
deno add jsr:@logtape/file

Looking Forward

This release represents our ongoing commitment to making LogTape the most flexible and developer-friendly logging solution for JavaScript and TypeScript applications. We're continuing to improve performance and extend compatibility across the JavaScript ecosystem.

Contributors

Special thanks to Murph Murphy for their valuable contribution to this release.

As always, we welcome your feedback and contributions! Feel free to open issues or pull requests on our GitHub repository.

Happy logging!

github.com

GitHub - dahlia/logtape: Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions - dahlia/logtape

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social · Reply to 洪 民憙 (Hong Minhee) :nonbinary:

Just responded to some browser compatibility issues with . Turns out bundling everything in one package creates headaches for Next.js and other browser environments.

For the next minor version, we're breaking things up:

  • @logtape/logtape will be browser-friendly with zero compromises
  • @logtape/file will handle filesystem operations
  • Other specialized features will get their own packages

This should make LogTape work seamlessly across all environments while giving developers better control over what they include.

github.com

Turbopack has trouble with `.cjs` files inside esm build · Issue #27 · dahlia/logtape

turbopack has trouble with .cjs files inside esm build │ Import trace for requested module: │ ../../node_modules/@logtape/logtape/esm/nodeUtil.cjs │ ../../node_modules/@logtape/logtape/esm/nodeUtil...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social · Reply to 洪 民憙 (Hong Minhee) :nonbinary:

Just responded to some browser compatibility issues with . Turns out bundling everything in one package creates headaches for Next.js and other browser environments.

For the next minor version, we're breaking things up:

  • @logtape/logtape will be browser-friendly with zero compromises
  • @logtape/file will handle filesystem operations
  • Other specialized features will get their own packages

This should make LogTape work seamlessly across all environments while giving developers better control over what they include.

github.com

Turbopack has trouble with `.cjs` files inside esm build · Issue #27 · dahlia/logtape

turbopack has trouble with .cjs files inside esm build │ Import trace for requested module: │ ../../node_modules/@logtape/logtape/esm/nodeUtil.cjs │ ../../node_modules/@logtape/logtape/esm/nodeUtil...

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Haven't talked about LogTape in a while—it's a library I made for and . You know how logging can be a pain point in JavaScript/TypeScript development? Well, I tried to address some common frustrations.

What makes it special

Zero dependencies

We've all been there with dependency hell, right? has absolutely no external dependencies. Install it without worrying about bloating your node_modules.

Hierarchical categories

You can organize your logs in a tree structure. Want to save only database-related logs to a file? Easy to do. Child categories can inherit settings from their parents too, which keeps things clean and manageable.

Library-friendly

Writing a library and want to include logs without stepping on your users' toes? LogTape lets you add logging to your library while giving end users complete control over how those logs are handled.

Structured logging

Plain text logs not cutting it? LogTape supports structured logging. Makes log analysis way easier down the road.

Runs anywhere

Works smoothly in Node.js, Deno, Bun, browsers, and even edge functions. No special configuration needed.

Check out https://logtape.org/ if you're interested in learning more.

logtape.org

LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Haven't talked about LogTape in a while—it's a library I made for and . You know how logging can be a pain point in JavaScript/TypeScript development? Well, I tried to address some common frustrations.

What makes it special

Zero dependencies

We've all been there with dependency hell, right? has absolutely no external dependencies. Install it without worrying about bloating your node_modules.

Hierarchical categories

You can organize your logs in a tree structure. Want to save only database-related logs to a file? Easy to do. Child categories can inherit settings from their parents too, which keeps things clean and manageable.

Library-friendly

Writing a library and want to include logs without stepping on your users' toes? LogTape lets you add logging to your library while giving end users complete control over how those logs are handled.

Structured logging

Plain text logs not cutting it? LogTape supports structured logging. Makes log analysis way easier down the road.

Runs anywhere

Works smoothly in Node.js, Deno, Bun, browsers, and even edge functions. No special configuration needed.

Check out https://logtape.org/ if you're interested in learning more.

logtape.org

LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Haven't talked about LogTape in a while—it's a library I made for and . You know how logging can be a pain point in JavaScript/TypeScript development? Well, I tried to address some common frustrations.

What makes it special

Zero dependencies

We've all been there with dependency hell, right? has absolutely no external dependencies. Install it without worrying about bloating your node_modules.

Hierarchical categories

You can organize your logs in a tree structure. Want to save only database-related logs to a file? Easy to do. Child categories can inherit settings from their parents too, which keeps things clean and manageable.

Library-friendly

Writing a library and want to include logs without stepping on your users' toes? LogTape lets you add logging to your library while giving end users complete control over how those logs are handled.

Structured logging

Plain text logs not cutting it? LogTape supports structured logging. Makes log analysis way easier down the road.

Runs anywhere

Works smoothly in Node.js, Deno, Bun, browsers, and even edge functions. No special configuration needed.

Check out https://logtape.org/ if you're interested in learning more.

logtape.org

LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Haven't talked about LogTape in a while—it's a library I made for and . You know how logging can be a pain point in JavaScript/TypeScript development? Well, I tried to address some common frustrations.

What makes it special

Zero dependencies

We've all been there with dependency hell, right? has absolutely no external dependencies. Install it without worrying about bloating your node_modules.

Hierarchical categories

You can organize your logs in a tree structure. Want to save only database-related logs to a file? Easy to do. Child categories can inherit settings from their parents too, which keeps things clean and manageable.

Library-friendly

Writing a library and want to include logs without stepping on your users' toes? LogTape lets you add logging to your library while giving end users complete control over how those logs are handled.

Structured logging

Plain text logs not cutting it? LogTape supports structured logging. Makes log analysis way easier down the road.

Runs anywhere

Works smoothly in Node.js, Deno, Bun, browsers, and even edge functions. No special configuration needed.

Check out https://logtape.org/ if you're interested in learning more.

logtape.org

LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee) :nonbinary:
@hongminhee@hollo.social

Haven't talked about LogTape in a while—it's a library I made for and . You know how logging can be a pain point in JavaScript/TypeScript development? Well, I tried to address some common frustrations.

What makes it special

Zero dependencies

We've all been there with dependency hell, right? has absolutely no external dependencies. Install it without worrying about bloating your node_modules.

Hierarchical categories

You can organize your logs in a tree structure. Want to save only database-related logs to a file? Easy to do. Child categories can inherit settings from their parents too, which keeps things clean and manageable.

Library-friendly

Writing a library and want to include logs without stepping on your users' toes? LogTape lets you add logging to your library while giving end users complete control over how those logs are handled.

Structured logging

Plain text logs not cutting it? LogTape supports structured logging. Makes log analysis way easier down the road.

Runs anywhere

Works smoothly in Node.js, Deno, Bun, browsers, and even edge functions. No special configuration needed.

Check out https://logtape.org/ if you're interested in learning more.

logtape.org

LogTape

Simple logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

洪 民憙 (Hong Minhee)
@hongminhee@fosstodon.org

v0.6.0, a zero-dependency structured logging library for & , has been released. The main changes include:

• Loggers now can override sinks of their ascendants.
• Placeholders in message templates now forgive leading and trailing spaces.
• Added LogRecord.rawMessage property.
• Built-in text formatters now can be customized.

Available now from JSR and npm:

• JSR: jsr.io/@logtape/logtape@0.6.0
• npm: npmjs.com/package/@logtape/log

洪 民憙 (Hong Minhee)
@hongminhee@fosstodon.org

Version 0.5.0 of , the zero-dependency library for , .js, , edge functions, and browsers, has been released! The main additions include:

• Contexts
• ANSI color formatter
• Comprehensive docs
• A few API conveniences

LogTape v0.5.0 is available from JSR and npm:

• JSR: jsr.io/@logtape/logtape@0.5.0
• npm: npmjs.com/package/@logtape/log

In addition, a new website with documentation has been launched, so please check it out!

logtape.org/

洪 民憙 (Hong Minhee)
@hongminhee@fosstodon.org

In the next version of , a zero-dependency library for & , contexts will be introduced that allow the same set of properties to be shared across multiple log messages. Thanks to @okikio for collaborating on the design! This feature is available for preview in 0.5.0-dev.60+f819929c.

• JSR: jsr.io/@logtape/logtape@0.5.0-
• npm: npmjs.com/package/@logtape/log

github.com/dahlia/logtape#cont

const logger = getLogger(["my-app", "my-module"]); const ctx = logger.with({ userId: 1234, requestId: "abc" }); ctx.info `This log message will have the context (userId & requestId).`; ctx.warn("Context can be used inside message template: {userId}, {requestId}.");
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const logger = getLogger(["my-app", "my-module"]); const ctx = logger.with({ userId: 1234, requestId: "abc" }); ctx.info `This log message will have the context (userId & requestId).`; ctx.warn("Context can be used inside message template: {userId}, {requestId}.");

洪 民憙 (Hong Minhee)
@hongminhee@fosstodon.org

is a logging library for and . It provides a simple and flexible logging system that is easy to use and easy to extend. The highlights of LogTape are:

• Zero dependencies
• Designed to be used in libraries as well as apps
• Supports virtually every runtime: .js, , , edge functions, and browsers
• Structured logging
• Logger categories (names) are hierarchical
• Dead simple sink (destination) interface

logtape.org/

Fedify: ActivityPub server framework
@fedify@hollo.social

offers robust logging capabilities through integration with LogTape. This feature allows you to easily debug and monitor your Fedify app!

To enable , simply install the @logtape/logtape package and configure it in your app's entry point:

import { configure, getConsoleSink } from "@logtape/logtape";

await configure({
  sinks: { console: getConsoleSink() },
  filters: {},
  loggers: [
    { category: "your-app", sinks: ["console"], level: "debug" },
    { category: "fedify",   sinks: ["console"], level: "info" },
  ],
});

Fedify uses hierarchical categories for fine-grained control over log output. Key categories include ["fedify", "federation", "http"] for HTTP requests/responses and ["fedify", "federation", "inbox"]/["fedify", "federation", "outbox"] for incoming/outgoing activities. (There are more categories.)

With integration, you gain valuable insights into your Fedify app's behavior, making troubleshooting and optimization much more straightforward!

https://fedify.dev/manual/log

洪 民憙 (Hong Minhee) 🤏🏼
@hongminhee@todon.eu

is a logging library for and . It provides a simple and flexible logging system that is easy to use and easy to extend. The highlights of LogTape are:

• Zero dependencies
• Designed to be used in libraries as well as apps
• Supports virtually every runtime: .js, , , edge functions, and browsers
• Structured logging
• Logger categories (names) are hierarchical
• Dead simple sink (destination) interface

github.com/dahlia/logtape

Screenshot: log messages printed out on the terminal
ALT text

Screenshot: log messages printed out on the terminal

Screenshot: log messages printed out on web browser's console
ALT text

Screenshot: log messages printed out on web browser's console