$ show tailwindlabs/heroicons
Heroicons is a MIT-licensed SVG icon library providing 16x16, 20x20, and 24x24 pixel icons in outline and solid styles. The system consists of source SVG files that are optimized via SVGO and converted to framework-specific React and Vue components through a sophisticated build process. The library emphasizes tree-shakability, proper theming via currentColor, and accessibility attributes. It's distributed as separate npm packages (@heroicons/react, @heroicons/vue) with a base package containing raw SVGs.
The LLM identified 3 files worth highlighting for reuse:
The core build system that converts optimized SVGs to React and Vue components. Uses @svgr/core for React and @vue/compiler-dom for Vue, generates both CJS and ES module formats, creates TypeScript definitions, and handles deprecation warnings. Demonstrates advanced understanding of frontend tooling and package authoring.
SVGO configuration for 24px solid icons that removes dimensions, sorts attributes, eliminates fill attributes, and adds theming-ready currentColor fill along with accessibility attributes (aria-hidden, data-slot). Shows deep expertise in SVG optimization specifically for icon systems where theming and accessibility are critical.
Sophisticated package.json with granular export mappings enabling optimal tree shaking while maintaining backwards compatibility. Features sideEffects: false for bundler optimization, proper peer dependencies, and comprehensive module resolution paths for different formats. Exemplifies modern JavaScript package publishing practices.