parcel-bundler/parcel-css
Parcel Css
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 a minifier that reduces file sizes through rule-merging and the removal of redundant code. The toolset also provides a visitor interface for applying custom programmatic transformations to the stylesheet structure.
Features
- CSS Processors - Acts as a high-performance CSS bundler and processor that modifies stylesheet structure via a visitor interface.
- CSS Bundlers - Provides a high-performance tool for parsing, transforming, and bundling CSS stylesheets.
- CSS Parsing - Provides a high-performance Rust implementation for converting CSS text into a structured abstract syntax tree.
- Syntax Lowering - Provides automated transpilation of modern CSS features into compatible versions for target browsers.
- Typed Internal Representations - Stores CSS values as strong types instead of plain strings to ensure accurate transformation.
- Scoped CSS Modules - Isolates CSS class and ID identifiers to prevent global namespace collisions via unique string rewriting.
- CSS Minifiers - Implements CSS minification through rule-merging and the removal of redundant code to reduce file sizes.
- CSS Transpilers - Transpiles modern CSS syntax into browser-compatible versions with automated vendor prefixing.
- Code Minifiers - Reduces stylesheet file sizes by merging rules and removing redundant code.
- CSS Minification - Reduces stylesheet file sizes by removing redundant code to improve loading speeds.
- CSS AST Transformation Interfaces - A visitor interface allowing users to apply custom logic to modify specific elements of the CSS structure.
- CSS AST Transformations - Allows applying programmatic logic to rewrite CSS structures through a visitor interface.
- AST Visitor Patterns - Implements the visitor design pattern for traversing and modifying the CSS abstract syntax tree.
- CSS Pipeline Processing - Provides a processing pipeline to analyze and modify stylesheet syntax for production environments.
- Rule Merging - Implements rule-merging to reduce stylesheet size by combining identical declarations.
- Vendor Prefix Managers - Automates the addition and removal of browser-specific vendor prefixes based on configuration.
- Parsing Utilities - CSS parser, transformer, and minifier.
