optimizations

interface/src/utils/file.ts

@@ -1,11 +1,28 @@
-export const saveFile = (json: unknown, filename: string, extension: string) => {
-  const anchor = document.createElement('a');
-  anchor.href = URL.createObjectURL(
-    new Blob([JSON.stringify(json, null, 2)], {
-      type: 'text/plain'
-    })
-  );
-  anchor.download = 'emsesp_' + filename + extension;
-  anchor.click();
-  URL.revokeObjectURL(anchor.href);
+export const saveFile = (
+  json: unknown,
+  filename: string,
+  extension: string
+): void => {
+  try {
+    const blob = new Blob([JSON.stringify(json, null, 2)], {
+      type: 'application/json'
+    });
+    const url = URL.createObjectURL(blob);
+    const anchor = document.createElement('a');
+    anchor.href = url;
+    anchor.download = `emsesp_${filename}${extension}`;
+
+    // Trigger download
+    document.body.appendChild(anchor);
+    anchor.click();
+    document.body.removeChild(anchor);
+
+    // Delay revocation to ensure download starts properly
+    setTimeout(() => {
+      URL.revokeObjectURL(url);
+    }, 100);
+  } catch (error) {
+    console.error('Failed to save file:', error);
+    throw new Error(`Unable to save file: ${filename}${extension}`);
+  }
 };