WASM - Possible to Create Managed Object of Arbitrary Type Using Only Javascript?

[legistek]

Pretty much what the topic says!
I know there are numerous helper methods for creating managed strings, arrays, etc. I also know it's possible to directly set C# object properties, etc.

However is it possible to instantiate a managed object of any arbitrary type using the Javascript side of the WASM SDK? This I haven't been able to find anywhere, even in the source code, so I'm guessing it's not but if it is I'd love to know how, or just get confirmation that it can't be done.

I realize I can create static helper methods that instantiate the managed objects and give them back to Javascript as pointers on the managed heap, but I'm looking for a general purpose solution.

Thanks!