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segmentio/mythArchived

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Myth

Myth is a CSS build tool and preprocessor that transforms modern styling specifications and future syntax into compatible code for current web browsers. It functions as a polyfill tool, converting advanced features into standard CSS to ensure consistent cross-browser rendering.

The project provides automated vendor prefixing based on browser support data and resolves CSS variables into static values for legacy browser compatibility. It also handles the transpilation of custom media query aliases and the manipulation of advanced color functions into standard formats.

The toolset includes a command line interface for stylesheet compilation, featuring output compression for minification and the generation of source maps for debugging. It further supports build-time mathematical calculations and file change monitoring to automate the processing pipeline.

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Features

  • CSS Preprocessors - Transpiles future CSS specifications and modern syntax into standard CSS for cross-browser compatibility.
  • CSS Build Tools - Provides a comprehensive command line tool for compiling and optimizing modern CSS stylesheets.
  • CSS Polyfill Engines - Functions as an engine that transforms future CSS specifications into compatible formats for older browsers.
  • Legacy Browser Support - Ensures visual consistency in older browsers by replacing modern CSS features with standard fallback values.
  • Vendor Prefix Managers - Automates the injection of browser-specific property prefixes based on current support databases.
  • CSS Transpilers - Transpiles future CSS specifications and modern syntax into compatible code for current web browsers.
  • CSS Minification - Reduces stylesheet payload size by removing redundant characters and whitespace during output optimization.
  • Compiler Command Line Interfaces - Provides a command-line interface to execute the stylesheet compilation and transformation process.
  • Compile-Time Expression Evaluation - Calculates mathematical operations and color functions during the compilation phase to eliminate runtime overhead.
  • CSS - Resolves custom variable declarations and media query aliases into concrete values before generating the final stylesheet.
  • Syntax Tree Transformers - Uses an abstract syntax tree to transform modern CSS specifications into browser-compatible code.
  • CSS Minifiers - PostCSS functionality to remove unnecessary whitespace and characters from resulting stylesheets to decrease overall file size.
  • CSS Color Transpilation - Converts advanced color functions and extended hex codes into standard formats for legacy browser support.
  • CSS Variable Substitution - Replaces CSS variable declarations with actual values to support browsers lacking native variable support.
  • CSS Minifiers - Provides functionality to reduce stylesheet size by removing unnecessary characters and whitespace.
  • Build Automation Pipelines - Automates the processing of stylesheets from source to minified production files via a CLI.
  • Media Query Aliasing - Converts custom media query aliases into standard queries to simplify responsive layout management.
4,291 stars·125 forks·JavaScript·27 views

Star history

Star history chart for segmentio/mythStar history chart for segmentio/myth

How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

Projects sharing features with Myth

These projects share indexed features with Myth. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
  • parcel-bundler/lightningcssparcel-bundler avatar

    parcel-bundler/lightningcss

    7,581View on GitHub↗

    Lightning CSS is a high-performance CSS toolchain implemented in Rust. It provides a comprehensive suite of tools for stylesheet processing, including a bundler, minifier, module compiler, syntax lowerer, and vendor prefixer. The engine utilizes a browser-grade grammar for parsing and converts stylesheets into typed property values. It distinguishes itself through a visitor-based transformation API that allows for custom modifications of the parsed abstract syntax tree and an error-tolerant parsing mechanism that recovers from malformed syntax to prevent build failures. The toolset covers br

    Rustbuild-toolcompilercss
    View on GitHub↗7,581
  • stylus/stylusstylus avatar

    stylus/stylus

    11,323View on GitHub↗

    Stylus is a CSS preprocessor that transforms a dynamic language into standard CSS. It utilizes a compilation workflow to enable the use of variables, nesting, and arithmetic, which are then rendered into stylesheets for use in frontend asset pipelines. The project is distinguished by a flexible syntax that allows for indentation-based styling, meaning curly braces, colons, and semicolons can be omitted. It further differentiates itself through a JavaScript-driven plugin pipeline and the ability to extend the native syntax with custom JavaScript functions for complex logic. Its capability sur

    JavaScriptcsspreprocessorstyl
    View on GitHub↗11,323
  • jakubpawlowicz/clean-cssjakubpawlowicz avatar

    jakubpawlowicz/clean-css

    4,202View on GitHub↗

    Clean-CSS is a Node.js CSS optimizer and minifier designed to reduce stylesheet file sizes and improve web performance. It functions as a CSS post-processor that removes unnecessary whitespace, comments, and redundant properties from stylesheets. The project utilizes an abstract syntax tree for parsing and a multi-pass optimization pipeline to restructure rules and simplify properties. It features a plugin interface for custom style transformations and provides compatibility-aware minification to ensure styles remain functional across specific legacy browser versions. Additional capabilities

    JavaScript
    View on GitHub↗4,202
  • parcel-bundler/parcel-cssparcel-bundler avatar

    parcel-bundler/parcel-css

    7,576View on GitHub↗

    parcel-css is a high-performance CSS bundler and processor written in Rust. It provides tools for parsing, transforming, and bundling stylesheets, utilizing a structured abstract syntax tree with typed property representations to ensure accurate analysis and modification. The project features a syntax lowerer that transpiles modern CSS into compatible versions based on target browser requirements and an automated system for managing vendor prefixes. It also includes a module scoper that isolates class and ID identifiers to prevent global namespace collisions. Additional capabilities include

    Rust
    View on GitHub↗7,576
Compare all 30 related projects→

Frequently asked questions

What does segmentio/myth do?

Myth is a CSS build tool and preprocessor that transforms modern styling specifications and future syntax into compatible code for current web browsers. It functions as a polyfill tool, converting advanced features into standard CSS to ensure consistent cross-browser rendering.

What are the main features of segmentio/myth?

The main features of segmentio/myth are: CSS Preprocessors, CSS Build Tools, CSS Polyfill Engines, Legacy Browser Support, Vendor Prefix Managers, CSS Transpilers, CSS Minification, Compiler Command Line Interfaces.

Which projects share features with segmentio/myth?

Projects with overlapping indexed features include: parcel-bundler/lightningcss — Lightning CSS is a high-performance CSS toolchain implemented in Rust. It provides a comprehensive suite of tools for… stylus/stylus — Stylus is a CSS preprocessor that transforms a dynamic language into standard CSS. It utilizes a compilation workflow… jakubpawlowicz/clean-css — Clean-CSS is a Node.js CSS optimizer and minifier designed to reduce stylesheet file sizes and improve web… parcel-bundler/parcel-css — parcel-css is a high-performance CSS bundler and processor written in Rust. It provides tools for parsing,… css/csso — csso is a CSS minifier and optimizer that reduces stylesheet file sizes through structural analysis and algebraic… moox/postcss-cssnext — postcss-cssnext is a PostCSS plugin suite and transpiler designed to convert modern CSS features and emerging syntax…