Document differences between Node.js fetch() implementations and the standard

[mcollina]

We should add a section in our docs documenting how/why Node.js fetch() differs from the standard.

A few notable differences

• new Response(asyncIterable) is an addition to standard
• cookies handling
• no forbidden headers

@KhafraDev definitely know more

[KhafraDev]

Most of these are documented in undici's README, it should be pretty easy to copy the documentation from there. https://github.com/nodejs/undici?tab=readme-ov-file#undicifetchinput-init-promise

[AretiTsolakidou]

I totally agree, giving users the opportunity to know what Node.js fetch() is in both the documentation and in README will turn out to be very helpful.

[pi-nathan]

Yeah, at this point the only documentation on fetch just links to the MDN page which isn't even documentation for node fetch. I get that the APIs are supposed to be compatible, but it's not really useful documentation for anything other than basic API usage. At least linking to undici would be more accurate.

[mcollina]

Would you like to send a PR?

[jacobra19]

Hi, is this being worked on? can i take it on myself? (looking to make my first contribution :-) )

[MoLow]

@jacobra19 no activity for over 3 weeks, I am pretty sure you can go ahead and submit a PR

[KhafraDev]

#56314 this is being worked on

[Khan30-ai]

I would like to work on this issue.

[adityasharmawork]

Hi maintainers!

I found this issue very interesting and have created a Pull Request for this - #60233 ( #60233 )

Please let me know if any changes are required, always looking forward to contribute meaningfully!