What do you mean by loss of control? Cloudflare has local dev in their Wrangler tool. I'm not sure how testing/scripting is affected here since the main difference is the deployment target.
I'm on the apprehensive side, but optimistic. Let the early adopters give it a shot so the rest of us can see how worth it it is.
> As hinted above, the full Cloudflare Workers service involves a lot of technology beyond workerd itself, including additional security, deployment mechanisms, orchestration, and so much more. workerd itself is a portion of our runtime codebase, which is itself a small (albeit critical) piece of the overall Cloudflare Workers service.
The parts we did not release are the parts that would only really be useful for building your own hosting service to compete with Cloudflare. These parts would not be particularly useful to someone who merely wants to run their own code -- in fact, they'd be excessively difficult to operate for that use case. This is on par with other services, e.g. my understanding is Deno Deploy has not released this part of their code either.
It’s a shiny thing, but at the cost of so much DX and optionality which is a worrying general trend with edge stuff.