Interface: Brand<B>

// A branded type definition
type UserId = number & Brand<"UserId">;

// A function that creates `UserId` values.
// Casting with `as UserId` is unsafe, so `createUserId` must be unit-tested.
const createUserId = (): UserId => {
  return 123 as UserId; // Unsafe casting
};

const userId = createUserId();

// A function that accepts only `UserId`.
const getUser = (id: UserId) => {
  // Implementation
};

getUser(userId); // ✅ Valid
getUser(123); // ❌ TypeScript error
getUser("123"); // ❌ TypeScript error

// Define branded types
type Min1 = string & Brand<"Min1">;
type Max100 = string & Brand<"Max100">;
type Min1Max100 = string & Brand<"Min1" | "Max100">;

// Functions requiring specific brands
const requiresMin1 = (value: Min1): void => {};
const requiresMax100 = (value: Max100): void => {};

// Values with single brands
const min1Value: Min1 = "hello" as Min1;
const max100Value: Max100 = "world" as Max100;

// Value with multiple brands
const min1Max100Value: Min1Max100 = "typescript" as Min1Max100;

// Valid cases
requiresMin1(min1Value); // ✅ Valid
requiresMax100(max100Value); // ✅ Valid
requiresMin1(min1Max100Value); // ✅ Valid: Min1Max100 satisfies Min1
requiresMax100(min1Max100Value); // ✅ Valid: Min1Max100 satisfies Max100