Question about discriminated unions

example.ts

// Given this

interface One {
  kind: 'one';
  value: 1;
}

interface Two {
  kind: 'two';
  value: 2;
}

// ... and this alias
type Number = One | Two;

// ... can the `kind` values be expressed as a type without having to explicitly do this:
type NumberKinds = 'one' | 'two';