function addSignalListenerimport { addSignalListener } from "https://deno.land/std@0.151.0/_deno_unstable.ts"; addSignalListener(...args: Parameters<Deno.addSignalListener>): ReturnType<Deno.addSignalListener>Parameters...args: Parameters<Deno.addSignalListener>ReturnsReturnType<Deno.addSignalListener>