Warn about unexpected properties in HTTP schemas

[diego-aquino]

Currently, the following declaration does not generate any warnings or errors:

import { type HttpSchema } from '@/http';

type MySchema = HttpSchema<{
  '/users': {
    GET: {
      searchParams: {
        name?: string;
      };
      response: {
        200: {
          body: { id: string; name: string }[];
        };
      };
    };
  };
}>;

Even though, the searchParams are declared outside the field request and won't be considered when typing interceptors.

Proposal

We should warn users or show a type error if invalid properties are passed in HTTP schema declarations. By not showing any indicating of a schema with unknown properties, we make it harder for users to realize something is not right in the declaration.

[diego-aquino]

Marking as "blocked" as I see no way of implementing this due to TypeScript's structural typing. Ideas are welcome!