Supabase Middleware: composable, reusable middleware for Web Fetch handlers

Supabase released @supabase/middleware, a composable, type-safe middleware library for Web Fetch handlers.

It allows developers to define per-request logic once and run it on any runtime that supports fetch, including frameworks like Hono, H3, Elysia, NestJS, and TanStack Start via a short bridge file.

The library is MIT-licensed and free.