frontpage.

Hi HN! I built a type effectiveness calculator for competitive gaming.

  Link: https://typematchup.org

  Features:
  - Interactive 18×18 type chart
  - Dual-type calculator (handles 4x and 0.25x multipliers)
  - Battle simulator with STAB calculations

  Built with Next.js 14, TypeScript, and Tailwind CSS. All 26
  pages are statically generated for fast loading.

  The main technical challenge was handling async params in
  Next.js 15+ for dynamic routes. Would love feedback on the
  implementation!

  Tech details:
  - SSG with generateStaticParams
  - Type-safe JSON imports
  - Dynamic sitemap generation
  - Full SEO optimization

  Open source? Not yet, but considering it. Feedback welcome!

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