Any plan to support union type?

[Kingwl]

Or any idea?

I have some attempts in this, but I have some problems. (about type guard)

[ovr]

Hey!

Maybe I didn't understand question:

I will store Object as plain structures when this will be possible and as V8::Value
Related typechecking, this will be on frontend side (typescript as framework)

But, I only started, I need sometime to start implementing it :)

Thanks

[Kingwl]

Sorry, maybe I didn’t make it clear.

for example:

interface Foo {
a: string
b: string
}

interface Bar {
b: string
c: string
}

type Baz = Foo | Bar

declare const a: Baz

a.b = "" // here

if union type is implemented as a plain struct
where is the b field? (if you do not use the v8::object)