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https://github.com/lowlighter/libs

🍱 Collection of carefully crafted TypeScript standalone libraries. Minimal, unbloated, convenient.
https://github.com/lowlighter/libs

algorithms bun bundler deno diff formatter logging-library minifier nodejs parser patiencediff qrcode-generator reactivity stringifier totp-generator typescript typescript-library typings xml

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🍱 Collection of carefully crafted TypeScript standalone libraries. Minimal, unbloated, convenient.

Awesome Lists containing this project

README 

        
# 🍱 Libraries



[![JSR Scope](https://jsr.io/badges/@libs)](https://jsr.io/@libs) [![NPM](https://img.shields.io/badge/npm-%40lowlighter-0a3040?style=flat&logo=npm&labelColor=cb0000)](https://www.npmjs.com/search?q=@lowlighter)

[![deno.land/x](https://img.shields.io/badge/deno.land%2Fx-libs-0a3040?style=flat&logo=deno&labelColor=black)](https://deno.land/x/libs) [![Playground](https://img.shields.io/badge/Playground--black?style=flat&logo=windowsterminal&labelColor=black)](https://libs.lecoq.io)

[![ci](https://github.com/lowlighter/libs/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/lowlighter/libs/actions/workflows/ci.yml)



This is a collection of carefully crafted _TypeScript_ libraries.

They try to be as minimal, unbloated and convenient as possible.



They honor [web standards](https://developer.mozilla.org/en-US/docs/Learn/Getting_started_with_the_web/The_web_and_web_standards) for maximum compatibility cross-runtime, which makes most of them compatible with [Deno](https://deno.com), [Node.js](https://nodejs.org),

[Bun](https://bun.sh) and even browsers out of the box.



See table below for a list of available libraries and their features, compatibility, test coverage and playgrounds.



📦 @libs/bundle
Code bundlers, formatters, minifiers and others tools.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Lint, minify, license CSS code and check features compatibility against MDN data for each browser
    • 

      
  • 

        Bundle, minify, anonymize local file paths, unmap imports, license and publish TypeScript code

        

      
    • 

      
  • Compile Rust projects to Web assembly, hot-patch source in base64 and minify output
    • 

      
  • CLI utilities
    • 



  

  

  

  
🧮 @libs/crypto
Features based upon Web Crypto APIs

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Encrypt and decrypt data using a seed-salt derived private key
    • 

      
  • Generate time-based OTP secret key and verify tokens validity
    • 



  

  

  

  
➕ @libs/diff
Diff (patience algorithm)

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Compute unified patch between two strings
    • 



  

  

  

  
🦊 @libs/dom
Virtual DOM for unit testing and server side rendering.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Implements typings from `lib.dom.d.ts` while following web standards
    • 

      
  • Reuse built-ins whenever possible
    • 

      
  • 

        Ideal for:

        
      

            
    • Server-Side Rendering
      • 

            
    • Unit testing for browser support
      • 

            
    • HTML parsing and scraping
      • 

          
    

      
    • 



  

  

  

  
📰 @libs/logger
Simple logger

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • 

        Simple logger library with configurable log level and tags

        
      

            
    • Support date, time and delta stamps
      • 

            
    • Support caller info (file, name, line) using internal V8's Error.prepareStackTrace API
      • 

          
    

      
    • 

      
  • Automatically reads LOG_LEVEL environment variable (if available)
    • 



  

  

  

  
🖨️ @libs/markdown
Markdown renderer with optional plugins based on the unified ecosystem.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • 

        Render markdown to HTML using the unified ecosystem.

        
      

            
    • Straightforward API for both basic markdown and extended markdown rendering
      • 

            
    • 

              Offer a dozen of plugins to add extended markdown features (headings anchors, frontmatter, code highlighting, math, mermaid diagrams, wiki links, etc.)

            
      • 

          
    

      
    • 



  

  

  

  
💰 @libs/orm
Object-relational mapping toolbox.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Manage resources using an agnostic storage inteface
    • 



  

  

  

  
🔳 @libs/qrcode
Pure TypeScript QRcode generator with no dependencies.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Generate QR codes without external dependencies
    • 

      
  • Support console, array and SVG output (with customizable colors)
    • 



  

  

  

  
🎯 @libs/reactive
Reactive utilities for observable objects.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Create observable contexts to track get, set, delete and call operations
    • 

      
  • Support inherited contexts
    • 



  

  

  

  
⏯️ @libs/run
Utilities to run subprocess.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • 

        Wrapper around Deno.Command with improved streams managements

        
      

            
    • Add stdio that register each stdin, stdout, stderr entry with a timestamp for an accurate history
      • 

            
    • Support buffering to merge closely-timed entries from same channel together
      • 

            
    • Pass a callback to react on output chanells and write to stdin for interactive scripting
      • 

          
    

      
    • 

      
  • Support winext to append an extension to binary when on Windows (e.g. .cmd, .exe, etc.)
    • 

      
  • Support dryrun to skip command execution (useful for test environments)
    • 



  

  

  

  
🦕 @libs/std
All-in-one mirror of Deno's Standard Library.

  Metadata and compatibilityFeatures

  

  

    

    

    

  

  

  

  
🧪 @libs/testing
Testing utilities for cross-platform testing on Deno, Node.js and Bun.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • 

        Cross-runtime testing framework

        
      

            
    • Support deno natively
      • 

            
    • Support Node.js through npx tsx --test

      • 

            
    • Support bun through bun test

      • 

            
    • Note: although tests are run on multiple runtimes, this library must be run on deno
      • 

          
    

      
    • 

      
  • Automatically skip test cases when runtime is not available on current platform
    • 



  

  

  

  
🧰 @libs/typing
Utility types.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • Utility types such as Promisable, Nullable, MapKey, MapValue, SetValue, etc.
    • 

      
  • Functions constructors (AsyncFunction, GeneratorFunction, AsyncGeneratorFunction)
    • 



  

  

  

  
📃 @libs/xml
XML parser/stringifier with no dependencies.

  Metadata and compatibilityFeatures

  

  

    

    

    
    

      
  • 

        Parse XML to JavaScript object

        
      

            
    • Support cleaning options to remove attributes, comments, XML doctype and processing instructions from output
      • 

            
    • Support flatten options to flatten node content when only attributes, text or nothing is present
      • 

            
    • Support reviving options to trim text, replace XML entities, revive booleans and numbers
      • 

            
    • Also support custom reviving function
      • 

          
    

      
    • 

      
  • 

        Stringify JavaScript object to XML

        
      

            
    • Support formatting options to configure indentation and text break lines
      • 

            
    • Support replacing options to replace XML entities
      • 

            
    • Also support custom replacing function
      • 

          
    

      
    • 



  

    

  

  



> Each package is versioned independently.

> Releases are fully automated and are published on every push to the `main` branch.

> Versioning follows [SemVer](https://semver.org) rules.



## 🧑‍💻 CLI Utilities



We also provide a set of useful CLI scripts.



> [!WARNING]

> Please note that these only run on the Deno runtime.



### TypeScript code coverage enhancer



Enhance coverage reports generated with `deno coverage` by adding syntax highlighting and better styling using [matcha.css](https://github.com/lowlighter/matcha).



```sh

deno run jsr:@libs/bundle/ts/cli/coverage --help

```



### TypeScript package publisher



Publish a TypeScript package to an npm registry (transpilation to JavaScript and conversion from `deno.jsonc` to `package.json` will automatically be performed) or to [deno.land/x](https://deno.land/x) (webhooks must be configured beforehand).



```sh

deno run jsr:@libs/bundle/ts/cli/publish --help

```



### CSS formatter



Format CSS code similarly to `prettier` or `deno fmt`.

Use `--check` to validate that CSS code is correctly formatted.



```sh

deno run jsr:@libs/bundle/css/cli/fmt --help

```



### CSS features compatibility checker



Print compatibility report for CSS features against MDN data for selected browsers.



```sh

deno run jsr:@libs/bundle/css/cli/check --help

```



### Web assembly builder



Compile a Rust project to Web assembly and minify output.



```sh

deno run jsr:@libs/bundle/wasm/cli/build --help

```



## 🦮 Contributing



Contributions are welcome!

Please read our [contribution guide](https://github.com/lowlighter/libs/blob/main/CONTRIBUTING.md) first.



## 📜 License



This work is licensed under the [MIT License](./LICENSE).



If you include a significant part of it in your own project, _**you must keep the license notice**_ with it, including the mention of the additional original authors if any.



> [!TIP]

> Love these bytes? Consider [`💝 sponsoring me`](https://github.com/sponsors/lowlighter), even one-time contributions are greatly appreciated!