Function findNonNullish

findNonNullish<TSource, TResult>(sourceItems: Iterable<TSource>, mapItem: ((item: TSource) => undefined | null | TResult)): TResult | null
Returns first mapped item which is not null nor undefined. So it does not map all items.
Type Parameters
- TSource
- TResult
Parameters
- sourceItems: Iterable<TSource>
- mapItem: ((item: TSource) => undefined | null | TResult)
  - - (item: TSource): undefined | null | TResult
    - Parameters
      
      item: TSource
      
      Returns undefined | null | TResult
Returns TResult | null

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