123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123
interface KillPortOptions {  protocol: "tcp" | "udp";}
/** *  Finds and kills the informed port process / task * @param port Port number * @param options (optional) * @return Returns a promise with the port's PID or null if the port PID was not found * * Example: * *     await killPort(8082); * */export async function killPort(  port: number,  options: KillPortOptions = {    protocol: "tcp",  },): Promise<number | null> {  return await (Deno.build.os == "windows"    ? handleKillPortWindows(port, options)    : handleKillPort(port, options));}
async function handleKillPortWindows(  port: number,  options: KillPortOptions,): Promise<number | null> {  const pid = await getPidPortWindows(port, options);
  if (!pid) {    return null;  }
  await killProcessWindows(pid);
  return pid;}
async function getPidPortWindows(  port: number,  options: KillPortOptions,): Promise<number | null> {  const cmd = Deno.run({    cmd: ["cmd", "/c", "netstat -a -n -o | findstr", `${port}`],    stdout: "piped",    stderr: "piped",  });
  const output = new TextDecoder("utf-8").decode(await cmd.output());
  const lines = output.split("\n");  const lineWithLocalPortRegEx = new RegExp(    `^ *${options.protocol.toUpperCase()} *[^ ]*:${port}`,    "gm",  );  const linesWithLocalPort = lines.filter((line) =>    line.match(lineWithLocalPortRegEx)  );
  const pid = linesWithLocalPort[0].trim().split(/[\s, ]+/)[3];
  return pid ? parseInt(pid) : null;}
async function killProcessWindows(pid: number): Promise<void> {  const cmd = Deno.run({    cmd: ["cmd", "/c", `taskkill /PID ${pid} /F`],    stdout: "piped",    stderr: "piped",  });
  await cmd.output();
  cmd.close();}
async function handleKillPort(  port: number,  options: KillPortOptions,): Promise<number | null> {  const pid = await getPidPort(port, options);
  if (!pid) {    return null;  }
  await killProcess(pid);
  return pid;}
async function getPidPort(  port: number,  options: KillPortOptions,): Promise<number> {  const cmd = Deno.run({    cmd: ["fuser", `${port}/${options.protocol}`],    stdout: "piped",    stderr: "piped",  });
  const output = await cmd.output();
  cmd.close();
  return parseInt((new TextDecoder().decode(output)).trim());}
async function killProcess(pid: number): Promise<void> {  const cmd = Deno.run({    cmd: ["kill", "-9", `${pid}`],    stdout: "piped",    stderr: "piped",  });
  await cmd.output();
  cmd.close();}