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@harmony-css/swc-plugin

v0.1.2

Published

a year ago

A zero-runtime CSS-in-JS SWC plugin

Downloads

0

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swc-plugin css-in-js zero-runtime styled-components

@harmony-css/swc-plugin

A zero-runtime CSS-in-JS SWC plugin that transforms styled template literals at compile time.

Features

Development Mode Features

Enhanced Debugging:
- Generate detailed source maps connecting compiled CSS to original template literals
- Include component name and file location in CSS comments
- Use descriptive class names with component identifiers
- Inject data attributes for DOM inspection
Developer Feedback:
- Emit detailed compile-time warnings for CSS syntax errors
- Validate interpolation expressions for potential runtime issues
- Provide helpful error messages with exact locations of problematic code

Production Mode Optimizations

Size Optimization:
- Generate minified hash-only classnames
- Remove all debug comments and source mapping information
- Perform aggressive CSS rule merging and deduplication
Performance Optimization:
- Convert more dynamic expressions to static when possible through advanced static analysis
- Precompute values that can be determined at build time
- Optimize CSS variable usage to minimize style recalculations

Installation

npm install --save-dev @harmony-css/swc-plugin
# or
yarn add --dev @harmony-css/swc-plugin

Usage

This plugin is designed to be used with SWC. See the documentation for integration with various build tools.

License

MIT