✨ [open-formulieren/open-forms#5073] transformData attribute for selectboxes

[stevenbal]

closes open-formulieren/open-forms#5073 partially

[stevenbal]

I don't know if this has to be optional or required, do types like these affect existing configurations or is this just about the Formio builder knowing these attributes?

[sergei-maertens]

above all they should reflect the reality.

The types in this repo mostly help us developers to reason about which features we support (or don't support) and what is available. Typescript in general however is about properly using types to catch bugs at compile time rather than at runtime (and this can effectively eliminate the need for some types of tests). If your types are wrong to begin with, everything crumbles.

So, if we define this property to be required (openForms, but also transformData), that means that they must exist in the existing definitions in the backend, and implies that a data migration is necessary. Otoh, if you define them as optional, we don't need to touch existing components, but runtime code needs to take into account that the properties may be absent (undefined).

Now, for our behaviour, I think this means effectively the same - going with openForms?: {transformData?: boolean} would probably work because undefined is also falsy, which would leave the formio-builder unchecked, and this behaviour is not relevant for the formio-renderer (yet?).

[vaszig]

Discussed this with Steven and Sergei and this won't be the case. We are not going to implement this on the component level but in the variables tab and in the registration. See open-formulieren/open-forms#5074