Dataweave 2.0 Script that allows to set dynamically fields from a payload and set the date format for strings that are date / datetime

dynamicFieldsDateValidation

%dw 2.0
import try, fail from dw::Runtime
output application/java


fun isDate(value: Any): Boolean = try(() -> value as Date).success
fun getDate(value: Any): Date | Null | Any = ( if ( isDate(value) ) value 
            as Date as String else value )

---
(payload map (item,index) ->{
    (item mapObject ((value, key, index) -> {
        (key):(getDate(value))
    } ))
})