stream

Platform: Linux Mint 20.3

Nuclear version: 0.6.17; Appimage with AppimageLauncher

Description of the issue: I can't say that I really if I do things correctly, but it appears to be riddled with problems at my machine. At the very start of the appimage (and the .deb package previously) there's is an "Cannot read property 'sourceName' of undefined" error. But now a more serious issue appeared.

node-fetch currently completely ignoring Content-Length header while consuming response.
Fetch specification about handling Content-Length on server response says almost nothing:
https://fetch.spec.whatwg.org/#concept-http-network-fetch (see whatwg/fetch#67)

On other hand, we have a fetch-node specific extension to limit the size of the response.

My prop

It should cover when you'd use and how to use:

• parEvalMap/Unordered
• parJoin
• concurrently
• merge*

There's the page on Queue/Topic/etc but there's not a great single page on the operations directly on Stream. The Guide section on concurrency is very short and doesn't cover some of the most common operations (parEvalMap especially)