Elektronun Single Instance olması için kod düzeltildi

src/background.js

@@ -52,20 +52,19 @@ if (!gotTheLock) {
       mainWindow.focus();
     }
   });
+  app.on("ready", async () => {
+    if (isDevelopment && !process.env.IS_TEST) {
+      try {
+        await installExtension(VUEJS_DEVTOOLS);
+      } catch (e) {
+        console.error("Vue Devtools failed to install:", e.toString());
+      }
+    }
+    createWindow();
+  });
   require("./ipc")();
 }
 
-app.on("ready", async () => {
-  if (isDevelopment && !process.env.IS_TEST) {
-    try {
-      await installExtension(VUEJS_DEVTOOLS);
-    } catch (e) {
-      console.error("Vue Devtools failed to install:", e.toString());
-    }
-  }
-  createWindow();
-});
-
 if (isDevelopment) {
   if (process.platform === "win32") {
     process.on("message", data => {