Type a context-filling middleware

[cyrilchapon]

In the doc examples there is a mention of filling the context with a middleware

import { userMiddleware } from "./userMiddleware";

const ctx = zodiosContext(z.object({
  user: z.object({
    id: z.number(),
    name: z.string(),
    isAdmin: z.boolean(),
  }),
}));

const app = ctx.app(userApi);
// middleware that adds the user to the context
app.use(userMiddleware);

Unfortunately, without any example of how userMiddleware could be typed. This operation is often complicated to type (coming from various environments like typera or Nest); any advice to do so ?

Thanks !