This is Bro, a super fast style sheet language for cool kids! [WIP]

This is Bro — A super fast style sheet language, alternative to SassC, DartSass, SassJS and Less.

Warning! Bro is still under development. Expect bugs/incomplete features.

Key features

• 🍃 Lightweight, tiny executable
• 🐱 Dependency Free / No Virtual Machine
• 🌍 Works on Linux, macOS, Windows
• 💪 Strong Typed = Perfect Cascading Style Sheets 🤩
• 🎁 CSS Minifier
• 🗺 CSS SourceMap Generator
• 🔄 CSS Reload & Browser sync Setup info
• 🖌 JSON / YAML stream to Stylesheet
• 🌴 Abstract Syntax Tree binary serialization via MessagePack
• 🎉 Built-in HTML Documentation Generator
• 🔥 Works with NodeJS & BunJS via NAPI
• 🎩 Open Source | LGPLv3 license
• 👑 Written in Nim language
• 😋 Made for Cool Kids

Dummy benchmark

1.572.876 lines of

.btn
  background: yellow

Benchmark 1: ./dart sass.snapshot test.sass:test.css --no-source-map --style=compressed
  Time (abs ≡):         4.846 s     [User: 6.077 s, System: 0.208 s]
 
Benchmark 2: sassc test.sass test.css --style=compressed
  Time (abs ≡):         5.982 s     [User: 5.531 s, System: 0.448 s]
 
Benchmark 3: bro test.sass test.css --min
  Time (abs ≡):        658.9 ms     [User: 543.7 ms, System: 112.8 ms]
 
Benchmark 4: node bro.js
  Time (abs ≡):        942.3 ms     [User: 835.2 ms, System: 107.9 ms]
 
Benchmark 5: bun bro.js
  Time (abs ≡):        969.6 ms     [User: 775.7 ms, System: 153.5 ms]
 
Benchmark 6: node sass.js
  Time (abs ≡):        12.566 s     [User: 19.499 s, System: 1.212 s]
 
Benchmark 7: bun sass.js
  Time (abs ≡):         9.892 s     [User: 18.939 s, System: 0.938 s]
 
Summary
  'bro test.sass test.css --min' ran
    1.43 times faster than 'node bro.js'
    1.47 times faster than 'bun bro.js'
    7.35 times faster than './dart sass.snapshot test.sass:test.css --no-source-map --style=compressed'
    9.08 times faster than 'sassc test.sass test.css --style=compressed'
   15.01 times faster than 'bun sass.js'
   19.07 times faster than 'node sass.js'

Benchmark: hyperfine

What makes Bro fast?

First of all, Bro is fully written in Nim, a state-of-the-art programming language well-suited for systems and application programming. It offers high performance with type and memory safety while keeping the source code short and readable. Wanna know more about it? Check "Computer Programming with Nim" written by Dr. Stefan Salewski.

Learn Bro in 5 minutes

https://github.com/openpeeps/bro/wiki/Learn-Bro-in-5-minutes

Keep your style sheets clean with Bro!
https://github.com/openpeeps/bro