noneIfEmpty (method)

noneIfEmpty

• noneIfEmpty(this): Opt<Exclude<T, "" | [] | EmptyValue | None<any>>>

• Returns None if opt holds a value for which isEmpty returns true, otherwise passes opt unchanged.

  Parameters

  • this: Opt<PossiblyEmpty>

  Returns Opt<Exclude<T, "" | [] | EmptyValue | None<any>>>

  Example

  opt('x').noneIfEmpty() // Some('x')
  opt('').noneIfEmpty() // None
  opt([]).noneIfEmpty() // None
  opt({}).noneIfEmpty() // None