Space To Underscore type infer

SpaceToUnderscore.ts

const Names = [
  'Event Update'
]

type ToUnderscore<V extends string> = V extends `${infer S} ${infer E}`
  ? `${S}_${ToUnderscore<E>}`
  : V

type TNames<N extends string> = { [K in N as Uppercase<ToUnderscore<N>>]: K }

const EventNames = Names.reduce(
  (a, v) => ({ ...a, [v.toUpperCase().replace(/\s+/, '_')]: v }),
  Object.create({})
) as TNames<typeof Names[number]>

const a = EventNames.APP_OPENED_FROM_PUSH_NOTIFICATION