Stylable - CSS for components

⚙️ C99-compatible multipass compiler written in TypeScript with GCC extensions support. Features a handcrafted left-recursive parser, custom IR, SSA-based optimizer, and a full frontend/backend pipeline. Compiles to x86 machine code with integrated assembler and emulator.

Generating CSS using JS with considerable flexibility and extensibility, at both server side and client side.

Typescript monorepo for Svelte v3 (preprocess, template, types)

preprocessor directives for jsx,tsx,js,ts,html,css,vue and more

Tiny and powerful preprocessor for conditional comments and replacement of compile-time variables in text files

Command line tool to produce single source file from multiple C/C++ files.

Use JavaScript to generate JavaScript

Imagine crafting elegant, semantic HTML structures without the clutter of angle brackets. Pretty Markup, a revolutionary preprocessor like Sass for CSS or TypeScript for JavaScript, Pretty Markup takes HTML to the next level.

Webpack preprocessor loader

Svelte Markdown Preprocessor.

A Svelte preprocessor for Markdoc

A Stylis 4.x plugin that translates pixel units to rem units

Powerful Code Blocks for mdBook

NovaSheets is a powerful CSS preprocessor with the ability to easily create intricate CSS files with simple syntax. With many built-in functions for you to use, you can take your stylesheets to the next level.

TSVG: Turing-complete SVG preprocessor, using JSX and JavaScript

A simple html preprocessor for deno.

A Svelte 5 preprocessor that creates a bridge between visual editors and your actual Svelte code, making it possible to build tools like visual website builders that can directly modify your source files in real-time ✨

Universal Text Pre-Processor

Sophisticate SVG editors outputs to display them within interactive web pages.