I like the rjsf format api, it works great for me:
"format": "alphanumeric"
But I would like to assign multiple format rules to a single field, and use transformErrors api to display a different message for each, giving user more precise feedback about what's wrong. Something along the lines of:
"format": ["alphanumeric", "mustBeginWithLetter"]
but this array notation doesn't work and breaks the formatting instead :)
Is there a clean way to achieve what I want?
"allOf": [ {"format": "alphanumeric"}, {"format": "mustBeginWithLetter"} ]