fixes for deno compatibility

[mash-graz]

Just a first draft PR to feed the CI pipeline, because local testing doesn't work on my machine.

Fixes: #385

Warning! -- there are important parts missing/untested!

• validateHeaderName and validateHeaderValue are temporary replaced by dummy entries.

  This should be better fixed on the deno side (see: missing reexport of validateHeaderName and validateHeaderValue in node:http denoland/deno#22614).

• The worker_thread.unref() case is still uttery unsolved and just temporary removed.

[guybedford]

I'd be happy to land this with the suggested changes.

[guybedford]

Suggested change

	// worker.unref();
	if (worker.unref) worker.unref();

[mash-graz]

yes -- that's a much nicer solution! :)

Nevertheless, I think, it's not enough!

The timeouts in the CI pipeline are most likely caused by hanging processes affected by this particular change resp. broken termination of workers. :(

We have to check for active event listeners or timers...

[guybedford]

Suggested change

	// import { validateHeaderName, validateHeaderValue } from "node:http";
	import * as http from "node:http";
	const { validateHeaderName = () => {}, validateHeaderValue = () => {} } = http;

[mash-graz]

That's also a very nice improvement!

I just committed both changes, but it still needs a lot more of additional testing and rework.

[guybedford]

Thanks for working on this. Let's at least land for now, we can always improve later.

[mash-graz]

Thanks for working on this. Let's at least land for now, we can always improve later.

Yes -- that's a good interim solution, because the merged changes seem to do no harm to already existing use cases and test routines.

I just waited, because I could isolate the non-termination issue as another deno flaw (see: denoland/deno#22629) and I'm still searching a working solution to reuse the existing mocha tests also for deno unit checks (That's rather tricky, because it's very hard to create working import_map-redirections in mixed node/deno-workflows). But it's perfectly fine for me to send you these additional improvements in new PRs.

Thanks for all your help! It's really a pleasure to collaborate with you!