We are in the process of converting all the dialogs to Touch.
We noticed that in the classic UI: We could use /bin/wcm/foundation/forms/constraints.json
What's the equivalent for the above in Touch UI?
For form constraints check this - How constraint type is populated in foundation form text component??
For xtype selection, use Select — Granite UI 1.0 documentation or equivalent "select" resourceType/component based on your requirements