ZygosoptionfilterMapOn this pagefilterMap() filterMap<A, B>(f): (fa) => Option<B> Maps and filters in one operation. Type Parametersβ A: Aβ The input type. B: Bβ The output type. Parametersβ f: (a) => Option<B>β The mapping function that returns an Option. Returnsβ A function that filterMaps the Option. Sinceβ 2.0.0