method BetterMap.prototype.mapimport { BetterMap } from "https://deno.land/x/aleph@1.0.0-beta.1/lib/@unocss/core.ts"; map<R>(mapFn: (value: V, key: K) => R): R[]Type ParametersRParametersmapFn: (value: V, key: K) => RReturnsR[]