Using runtime information

The runtime data and original adapter parameters can be accessed through the third runtime parameter in any middleware or handler. For instance:

import { env, type Get, type UniversalMiddleware } from "@universal-middleware/core";

const handler = (() => (request, context, runtime) => {
  if (runtime.adapter === "express") {
    runtime.req;
  }
}) satisfies Get<[], UniversalMiddleware>;

Available properties

express

// hover me
type Runtime = Explain<ExpressAdapter>;

hono

// hover me
type Runtime = Explain<HonoAdapter>;

fastify

// hover me
type Runtime = Explain<FastifyAdapter>;

cloudflare-worker

// hover me
type Runtime = Explain<CloudflareWorkerAdapter>;

cloudflare-pages

// hover me
type Runtime = Explain<CloudflarePagesAdapter>;

vercel-edge

// hover me
type Runtime = Explain<VercelEdgeAdapter>;

vercel-node

// hover me
type Runtime = Explain<VercelNodeAdapter>;

h3

// hover me
type Runtime = Explain<H3Adapter>;

elysia

// hover me
type Runtime = Explain<ElysiaAdapter>;

hattip

// hover me
type Runtime = Explain<HattipAdapter>;

NOTE

All runtime types are defined in types.ts