Fixed ESLint error

src/Explorer/Explorer.tsx

@@ -313,9 +313,7 @@ export default class Explorer {
         // Try to navigate to VS Code protocol
         try {
           // Listen for blur event which might indicate app was launched
-          window.addEventListener(
-            "blur",
-            function onBlur() {
+          const onBlur = () => {
             clearTimeout(timeoutId);
             window.removeEventListener("blur", onBlur);
             if (document.body.contains(iframe)) {
@@ -323,9 +321,8 @@ export default class Explorer {
             }
             // Window lost focus, likely because VS Code opened
             resolve(true);
-            },
-            { once: true },
-          );
+          };
+          window.addEventListener("blur", onBlur, { once: true });
 
           // Navigate iframe to the VSCode URL
           iframe.src = vscodeUrl;