interface Deno.ServeDefaultExport
Interface that module run with `deno serve` subcommand must conform to.
To ensure your code is type-checked properly, make sure to add `satisfies Deno.ServeDefaultExport`
to the `export default { ... }` like so:
```ts
export default {
fetch(req) {
return new Response("Hello world");
}
} satisfies Deno.ServeDefaultExport;
```
A handler for HTTP requests. Consumes a request and returns a response.
If a handler throws, the server calling the handler will assume the impact
of the error is isolated to the individual request. It will catch the error
and if necessary will close the underlying connection.