fix: RecursiveFormFields type for recursive or unknown schemas

[sillvva]

fixes #14687

Right now, if the schema is unknown or otherwise indefinitely recursive, it treats form.fields as a field leaf instead of a field container. This makes form.fields.as() incorrectly available instead of form.fields.allIssues(). This update fixes that by ensuring form.fields is always treated as a field container.

It also exports the RemoteFormFields type so that it can be used to create wrapper components.

Examples

Pretend the function is a generic component

Before Fix

After Fix

No test adjustments, as this is just types. You can see the difference in the example above.

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🦋 Changeset detected

Latest commit: 97a5b60

The changes in this PR will be included in the next version bump.

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-kit-14734-svelte.vercel.app/

[benmccann]

@sillvva I've fixed that error. If you update your branch with the latest code from main then the tests should start passing

[sillvva]

@sillvva I've fixed that error. If you update your branch with the latest code from main then the tests should start passing

Thanks @benmccann! All tests passed on the second merge.

[sillvva]

@dummdidumm I apologize if you're busy. Thanks for your help on PR #14748. Would I be able to get you to review this type fix as well?

In order to work around this, I've had to copy all the RemoteForm, RemoteFormFields, RemoteFormField, etc. types into my project to fix the issue. 😭

[Rich-Harris]

Thank you but this isn't quite right, at least not yet. It fixes one bug but creates another, and leaves another one unsquashed. Currently:

With this PR:

[sillvva]

Got it! I think I figured out a better solution. Will post an update shortly.

Updated example

[Rich-Harris]

awesome, thanks so much!