nominaltypes03.ts

type UserId = string & Nominal<UserId>;
type NodeId = string & Nominal<NodeId>;
  
interface User {
  id: UserId;
  name?: string;
  address?: string;
}
  
interface Node {
  id: NodeId;
  x?: number;
  y?: number;
}
  
// ❌ Type 'User' is not assignable to type 'Node'.
// Types of property 'id' are incompatible.
const node: Node = user;