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28143 - OptionalUndefined #28451

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XkSuperCool opened this issue Jun 28, 2023 · 0 comments

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28143 answer en

XkSuperCool commented Jun 28, 2023

type Copy<T> = {
  [K in keyof T]: T[K]
}

type OptionalUndefined<T, Props extends keyof T = keyof T> = Copy<
  Omit<T, Props> &
  {
    [K in keyof Pick<T, Props> as undefined extends Pick<T, Props>[K] ? never : K]: Pick<T, Props>[K]
  } &
  {
    [K in keyof Pick<T, Props> as undefined extends Pick<T, Props>[K] ? K : never]?: Pick<T, Props>[K]
  } 
>

XkSuperCool added answer en labels

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