type alias ObjectXorKeysimport { type ObjectXorKeys } from "https://deno.land/std@0.217.0/collections/mod.ts"; Object with keys in either T or U but not in both Type ParametersTUoptionalX = Omit<T, keyof U> & Omit<U, keyof T>optionalY = [K in keyof X]: X[K]definition: Y