export type Brand<T, Name extends string> = T & {
  readonly __brand: Name;
};

// Usage
type UserId = Brand<string, 'UserId'>;
type OrderId = Brand<string, 'OrderId'>;

function getUser(id: UserId) { /* ... */ }

const userId = 'user_123' as UserId;
const orderId = 'order_456' as OrderId;

getUser(userId);   // OK
getUser(orderId);  // Error: OrderId not assignable to UserId