import * as Effect from "effect/Effect";import { NetService } from "@t3tools/shared/Net"; export const DEFAULT_DESKTOP_BACKEND_PORT = 3773;const MAX_TCP_PORT = 65_535; export interface ResolveDesktopBackendPortOptions {  readonly host: string;  readonly startPort?: number;  readonly maxPort?: number;  readonly canListenOnHost?: (port: number, host: string) => Promise<boolean>;} const defaultCanListenOnHost = async (port: number, host: string): Promise<boolean> =>  Effect.service(NetService).pipe(    Effect.flatMap((net) => net.canListenOnHost(port, host)),    Effect.provide(NetService.layer),    Effect.runPromise,  ); const isValidPort = (port: number): boolean =>  Number.isInteger(port) && port >= 1 && port <= MAX_TCP_PORT; export async function resolveDesktopBackendPort({  host,  startPort = DEFAULT_DESKTOP_BACKEND_PORT,  maxPort = MAX_TCP_PORT,  canListenOnHost = defaultCanListenOnHost,}: ResolveDesktopBackendPortOptions): Promise<number> {  if (!isValidPort(startPort)) {    throw new Error(`Invalid desktop backend start port: ${startPort}`);  }   if (!isValidPort(maxPort)) {    throw new Error(`Invalid desktop backend max port: ${maxPort}`);  }   if (maxPort < startPort) {    throw new Error(`Desktop backend max port ${maxPort} is below start port ${startPort}`);  }   // Keep desktop startup predictable across app restarts by probing upward from  // the same preferred port instead of picking a fresh ephemeral port.  for (let port = startPort; port <= maxPort; port += 1) {    if (await canListenOnHost(port, host)) {      return port;    }  }   throw new Error(    `No desktop backend port is available on ${host} between ${startPort} and ${maxPort}`,  );}