472 - Tuple to Enum Object

[Steven4857]

// ============= Your Code Here =============

type GetIndex<T extends readonly any[], S extends string> = T extends readonly [... infer R, infer L] ?
  L extends S ? R["length"] : GetIndex<R, S>
  : never

type Enum<T extends readonly string[], N extends boolean = false> = N extends true ?
  {
    readonly [P in T[number]as Capitalize<P>]: GetIndex<T, P>
  }
  : {
    readonly [P in T[number]as Capitalize<P>]: P
  }