method Reducer.Base.prototype.mapOutputimport { Reducer } from "https://deno.land/x/rimbu@0.14.1/common/mod.ts"; const { Base } = Reducer; mapOutput<O2>(mapFun: (value: O) => O2): Reducer<I, O2>Type ParametersO2ParametersmapFun: (value: O) => O2ReturnsReducer<I, O2>