Thyn is an experimental JavaScript UI framework for building fast, memory-efficient web apps. It compiles .thyn single-file components into highly optimized DOM operations.

• Fast runtime performance (see jsbenchmarks and js-framekworks-benchmark)
• Tiny bundles
• Minimal memory footprint
• Uses .thyn single-file components
• Experimental — limited tooling and ecosystem

npx degit thynjs/template my-app
cd my-app
npm install
npm run dev

<script>
  const count = $signal(0);

  $effect(() => {
    console.log(`Count is ${count()}`);
  });
</script>

<button onclick={() => count(c => c + 1)}>
  Count: {{ count() }}
</button>

<style>
  /* Styles are scoped by default to prevent style bleeding */
  button {
    background: #333;
    border: 0;
    color: #fff;
  }
</style>

Thyn is in early development. Expect sharp edges and limited integrations. Feedback welcome!