Solution based on proposal which is told in #397 with one exception, I limited possible use cases to one: currently allowed to use union type only with oneOf.
Another cases might ruin the widgets or might happen something an unpredictable at validation process or casting value or something else.
Allowed types to mixing in with null are "integer", "number", "string", "boolean".
Solution based on proposal which is told in #397 with one exception, I limited possible use cases to one: currently allowed to use union type only with oneOf. Another cases might ruin the widgets or might happen something an unpredictable at validation process or casting value or something else. Allowed types to mixing in with null are "integer", "number", "string", "boolean".