Throw error when extra fields are present

[JbIPS]

For now, the extractor only pluck the wanted fields and set the optional to null and the validator just check all required fields are here.

Would it be possible to throw a validation for an extra field is the validated object? Maybe add a allowsExtraFields options, default to true, in the .validate() method?

Or is it already a solution to do that? Thanks

[back2dos]

You could do that, although it goes a bit against the semantics of the Haxe type system. This is valid:

var foobar:{ foo:Int, bar:Float } = { foo: 5, bar: 5.5 };
var foo:{ foo:Int } = foobar;

That said I can sort of see why rejecting extra fields might be desireable when dealing with external data. We had a similar discussion here: haxetink/tink_json#15