Are there type-narrowing utilities?

[NullVoxPopuli]

For example, I have a

const a =  project.getChildByName(module);
//    ^ Reflection | undefined

and this can have a .type, but the Reflection type does not have a type property.

and eventually I'd like to narrow to things that have .typeArguments[], etc etc

Thanks!

[Gerrit0]

You're probably after Reflection.isDeclaration

[NullVoxPopuli]

I haven't been able to find where that can be imported from. TS is telling me that all importables Relfections don't have isDeclaration

[Gerrit0]

It sounds like you have an outdated project or something then, it's a member

[NullVoxPopuli]

ah ok! I thought it was an importable namespace I'd use. thanks! I see it now.