kill backend explicitly with kill -9 command on Unix either on clicking cross or via quit

Author: NadeemYaseen

cleanup.js

@@ -1,9 +1,10 @@
-const isWindows = process.platform === 'win32';
+const os = require('os');
+const platform = os.platform();
 
 const kill = (process) => {
     console.log(`Attempting to kill process with PID: ${process.pid}`);
-    if (isWindows) {
-        const { spawn } = require('child_process');
+    const { spawn } = require('child_process');
+    if (platform === 'win32') {
         // used taskkill for Windows to terminate the process tree
         const taskKill = spawn('taskkill', ['/PID', process.pid, '/T', '/F']);
         taskKill.on('close', (code) => {
@@ -13,6 +14,15 @@ const kill = (process) => {
                 console.error(`taskkill failed with exit code: ${code}`);
             }
         });
+    } else if (platform === 'darwin' || platform === 'linux') {
+        const taskKill = spawn('kill', ['-9', process.pid]);
+        taskKill.on('close', (code) => {
+            if (code === 0) {
+                console.log('Process killed successfully on Unix.');
+            } else {
+                console.error(`taskkill failed with exit code: ${code}`);
+            }
+        });
     } else {
         try {
             process.kill('SIGINT');

main.js

@@ -317,7 +317,10 @@ app.whenReady().then(() => {
   });
 });
 
-app.on('window-all-closed', () => {
+app.on("before-quit", function () {
   kill(serverProcess);
+})
+
+app.on('window-all-closed', () => {
   if (process.platform !== 'darwin') app.quit();
 });