feat(svelte-form): Add Svelte adapter

[dummdidumm]

This implements a Svelte adapter for the form package. API-wise it's somewhere inbetween Solid and React (createForm is used like Solid's, getting the field state from within a snippet is more like React). Added basic tests and two examples.

Superseeds #1107

[nx-cloud[bot]]

View your CI Pipeline Execution ↗ for commit f561f844af2804085f823826313364f29b36eab9.

Command	Status	Duration	Result
nx affected --targets=test:sherif,test:knip,tes...	✅ Succeeded	2m 3s	View ↗
nx run-many --target=build --exclude=examples/**	✅ Succeeded	20s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-04-17 23:43:45 UTC

[43081j]

Let me know if you want any help with this 👍 my pr went stale since I was in need of someone to pair/review with but I am still very much interested in landing this

[Dreaming-Codes]

Is this ready for testing it in a project?

[niemyjski]

Is this ready for testing it in a project?

And if it is, would love to know if there is a nightly build :), Otherwise what is left / where we can help.

[JonathonRP]

Is this ready for testing it in a project?

what is left / where we can help.

I see an error in types that has an @ts/error with no actual error, and as someone else pointed that import failing. I think the reviews need to approve and best guess they will once those two failing tests pass from the fixes I mentioned...

[43081j]

some of the CI failure seems unrelated, some eslint.config.js stuff from the react package

this all looks good other than the failing CI though 👍 i left a few very minor comments but nothing much

there's an unfortunate amount of any, unsafe casts (as never) and such. but there's not a huge amount we can do about them given the circular references and overly deep type inference

[43081j]

i tried this out locally and dug around the types a bit etc, all seems pretty good

maybe we can get some kind of nightly build sorted soon

[niemyjski]

nightly build would be great. Any thing the community can help with?