As long as the async code doesn't depend on calling itself concurrently it should be straightforward to simply execute it on the current thread, right? (Basical

As long as the async code doesn't depend on calling itself concurrently it should be straightforward to simply execute it on the current thread, right? (Basically using an executor that has 1 thread, the current thread.) And it'd be great to check and optimize away all this at compile time.