function map.modifyimport { map } from "https://deno.land/x/fun@v2.0.0-alpha.6/mod.ts"; const { modify } = map; modify<B>(S: Eq<B>): <A>(modifyFn: (a: A) => A) => (key: B) => (ta: ReadonlyMap<B, A>) => ReadonlyMap<B, A>Type ParametersBParametersS: Eq<B>Returns<A>(modifyFn: (a: A) => A) => (key: B) => (ta: ReadonlyMap<B, A>) => ReadonlyMap<B, A>