Untagged structs cannot be unioned together

[cablumen]

Hi,

I am testing out unions in the 1.0.0-pre.2 release and running into issues when two structs are unioned together. For example, the .blink file below returns "[Error 3022]: Duplicate type used in union"

type foo = struct {
var1: u32,
var2: i16
}

type bar = struct {
var3: u8
}

type foo_bar_quax = foo | bar

The structs have no variable names or variable types in common, but are detected as duplicates because they are both structs. The example in unions.blink unions together a primitive type, a struct, and two tagged enums and this works fine, but I want to send a table that can hold different luau types. Tagged enums are probably the solution, but then every element in my table has a TagName key which is redundant with the luau type.

This might be an unsupported feature or my syntax is wrong and my use case is not covered in unions.blink.