function mapimport { map } from "https://deno.land/x/fun@v2.0.0/tree.ts"; map<A, I>(fai: (a: A) => I): (ta: Tree<A>) => Tree<I>The map function for Mappable. Type ParametersAIParametersfai: (a: A) => IReturns(ta: Tree<A>) => Tree<I>