<sig-nal> is a zero-dependencies Web Component for Server-Side Rendering with Signals (SSRS) in 1107 bytes (minified + Brotli-11-compressed).
Here is a live demo.
This is alpha-quality software and as such not ready for production.
No build needed, 28 lines of static HTML, 3.6 kB. Compares favourably to Fresh framework by Deno and others! Try it out!