How do I compose an enum from another enum in Typescript?

Question

I have an enum containing some arbitrary values and want to automatically map the values of the enum to another enum 1-to-1 (with some arbitrary addition). What would be the most idiomatic way to accomplish this task?

I want to do something like add Element.keys+"Magic" to the Skills enum in a declarative fashion and then have these values available as keys without needing to duplicate the work and add a suffix.

enum Element {
  Air,
  Fire,
  Earth,
  Water
}

-->

enum Skills {
  // Unrelated Skills
  Unarmed,
  LightArmor,
  etc. . .

  // 1-to-1 Mapping
  AirMagic,
  FireMagic,
  EarthMagic,
  WaterMagic
}

Answer 1

Answering my own question in case others are looking to accomplish something similar. . .

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While it doesn't seem to be possible to accomplish this task with enums, I have managed something in the same spirit with 'Template Literal Types'.

type Element =
  | "Air"
  | "Fire"
  | "Earth"
  | "Water";

type Skills =
  | "Unarmed"
  | "LightArmor"
  | `${Element}Magic`;

This yields a string union type like so: "Unarmed" | "LightArmor" | "AirMagic" | "FireMagic" | "EarthMagic" | "WaterMagic"

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Resources

https://www.typescriptlang.org/docs/handbook/2/template-literal-types.html

https://www.typescriptlang.org/play?#code/C4TwDgpgBAogNhAthAdsAKuaBeKAiAQQEsAnPKAH3wDFSJyq8YBDE4ACwfwHVngIyAbgCwAKDGhIUAMoBrInDgBnKLjwBVFK2QATLngAyRAObtgBEogD2ZSlAAGAEgDe8JKgxYAvgFlmxogBjexFxUQAzAFcUQOAiKxQofiVgAAoleUUALhlM5QBKKGcxKChAhKUrBAA6OCtjdLz8sS8xMQB6dqhMKWYoFJIiFGModgFocJsoZkjgK3LEMAQ4hOqJCBTUwlI-AMC8ZrCgA