function createLabel<T extends number | string>(idOrName: T): NameOrId<T> {
  throw "unimplemented"
}

let a = createLabel("typescript")
   
let a: NameLabel

let b = createLabel(2.8)
            
function createLabel<2.8>(idOrName: 2.8): IdLabel

let c = createLabel(Math.random() ? "hello" : 42)
                          
random
round