method AsyncReducer.Base.prototype.mapOutputimport { AsyncReducer } from "https://deno.land/x/rimbu@0.12.3/mod.ts"; const { Base } = AsyncReducer; mapOutput<O2>(mapFun: (value: O) => MaybePromise<O2>): AsyncReducer<I, O2>Type ParametersO2ParametersmapFun: (value: O) => MaybePromise<O2>ReturnsAsyncReducer<I, O2>