kill ztf process

client/src/main.js

 import {app, BrowserWindow} from 'electron';
 import {getUIServerUrl, startZtfServer, killZtfServer} from './service';
 import {logInfo, logErr} from './log';
+import {killPortProcess} from "kill-port-process";
+import {portClient, portServer} from "./consts";
 
 // Handle creating/removing shortcuts on Windows when installing/uninstalling.
 if (require('electron-squirrel-startup')) { // eslint-disable-line global-require
@@ -34,6 +36,7 @@ async function startApp() {
   _starting = true;
 
   try {
+    await killPortProcess([portClient, portServer])
     const ztfServerUrl = await startZtfServer();
     logInfo(`>> ZTF Server started successfully: ${ztfServerUrl}`);
   } catch (error) {

client/src/service.js

@@ -4,7 +4,6 @@ import os from 'os';
 import {app} from 'electron';
 import express from 'express';
 const psTree = require('ps-tree');
-const { killPortProcess } = require('kill-port-process');
 
 import {portClient, portServer, uuid} from './consts';
 import {logInfo, logErr} from './log';
@@ -17,10 +16,6 @@ let _ztfServerProcess;
 let _ztfSubProcessIds = [];
 
 export function startZtfServer() {
-    (async () => {
-        await killPortProcess([portClient, portServer])
-    })();
-
     if (process.env.SKIP_SERVER) {
         logInfo(`>> Skip to start ZTF Server by env "SKIP_SERVER=${process.env.SKIP_SERVER}".`);
         return Promise.resolve();