function unionimport { union } from "https://dotland.deno.dev/x/rambda@9.4.1/files/index.d.ts"; union<T>(x: T[], y: T[]): T[]union<T>(x: T[]): (y: T[]) => T[]Type ParametersTParametersx: T[]y: T[]ReturnsT[]Type ParametersTParametersx: T[]Returns(y: T[]) => T[]