hey, I struggle to handle undefined when using withGroup. In this message, I'll try to show what I tried step by step. I'm sorry, I might give way too many details, but I can't find where is the limitation. #### Basic form The is a basic (bad) form: ```ts function RouteComponent() { const myForm = useAppForm({ defaultValues: { name: "" as string | undefined, }, }); return ( {(field) => (

Name

)} ); } ``` ✅ Here I get a ts error because `field.state.value` can be undefined. This is expected. #### With a record Here, users is a Record and values might be undefined. ```ts function RouteComponent() { const myForm = useAppForm({ defaultValues: { users: {} as Record, }, }); return ( {(field) => (

Name

)} ); } ``` ✅ Once again I get a ts error, because `field.state.value` might be undefined #### withFieldGroup and undefined Now, let's create a reusable field with `withFieldGroup`: ```ts const UserGroup = withFieldGroup({ defaultValues: { name: "", }, render: function Render({ group }) { return (

{(field) => }

); }, }); ``` and use it: ```ts const myForm = useAppForm({ defaultValues: { myuser: { name: "" as string | undefined, }, }, }); return ( ); ``` ✅ I get a ts error in `fields` because "myuser" might be undefined, and `UserGroup` requires `name` to be set #### withFieldGroup + record This is my issue: now, users comes from a Record, and the value might be undefined. ```ts const myForm = useAppForm({ defaultValues: { users: {} as Record, }, }); return ( ); ``` **❌ I don't get a ts error here. `users.john` refers to a value that could be `{name: string} | undefined` and there's no ts error when giving it to UserGroup. Why?**

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