Feature/use fetch

[mmailaender]

Ticket(s): 36

Problem

Axios has limited platform support.

Solution

Replace it with fetch()

With native fetch(), we can support almost all JS runtimes and platforms.

	WebAPI	Node 18	Node 17>	Deno	Bun
Browser	fetch()	N/A	N/A	N/A	N/A
Cloudflare Workers	fetch()	N/A	N/A	TODO	N/A
Vercel Edge (Cloudflare Workers)	fetch()	N/A	N/A	TODO	N/A
Vercel Serverless functions	N/A	fetch()	Isomorphic Unfetch / Cross-fetch	fetch()	fetch()
Cloud Functions	N/A	fetch()	Isomorphic Unfetch / Cross-fetch	fetch()	fetch()
Azure Functions	N/A	fetch()	Isomorphic Unfetch / Cross-fetch	fetch()	fetch()
AWS Lambda	N/A	fetch()	Isomorphic Unfetch / Cross-fetch	fetch()	fetch()
Netlify Functions (AWS Lambda)	N/A	fetch()	Isomorphic Unfetch / Cross-fetch	fetch()	fetch()
Web Assembly	TODO	TODO	TODO	TODO	TODO

Except Node and Bun I see atm some downsides:

1. The new fetch() native implementation available from 17.5 is not yet supporting HTTP/2
2. Bun is also not yet supporting HTTP/2
3. Node 16.x has no native fetch() support, and will be maintained until 2023-09-11. Taking your requirement into consideration @ptpaterson to support it, the question that I see is if it could be a temporary solution with one of the following options:
   a. forked Cross-Fetch version*,
   b. Isomorphic Unfetch*,
   c. dedicated node-fetch package*,
   d. dedicated Axios package*,
   e. ...?

* all of them lack support for HTTP/2

Progress:

• Replace Axios with Fetch
• Rewrite Tests to work with Fetch
• With fetch, we have specified HTTP codes for mocks. The codes need to be verified if they match the server specification.
• Test with HTTP/2
• Run all tests on all platforms and JS runtimes
• [] Test Isomorphic Unfetch
• Test Cross-Fetch

Result

Out of scope

Testing

[cleve-fauna]

@mmailaender Thanks for the patch here and the great feedback.

Another requirement we have is to support http/2. Unfortunately, from what I understand node-fetch (which underlies cross-fetch in node) does not support http/2 node-fetch/node-fetch#342.

Thus, we are working internally to branch between fetch and http/2 depending on the context of usage or the user's configuration.

What we will aim for here is:

1. Sane zero-touch defaults. If we detect your app is best with fetch() we'll default to that without user configuration required. If we detect your app is best with http2 we will go with that - TBD on what exact library that will be - don't want to pen any commitments here :).
2. Minimize dependencies we force onto the user's. Axios clearly suffers from this. Correct this error.
3. Ability for user's to configure to the http layer of their choice if they do not want the defaults.

We are pursuing that development work inside Fauna now. So expect to see PRs with this motion in mind in the coming weeks.

That being said, if you need this commit here to start using the language in Cloudflare or another platform please keep this branch open and run with it!

Thanks so much for your feedback!

[cleve-fauna]

Hey @mmailaender we just merged #66 which replaces the driver's default HTTPClient with fetch from Axios.

As such, I'm going to close this PR.

Please give it a go and let us know what you think!

Thanks again for being engaged and taking the initiative on this.