feat: add downloadBlob util

src/shared/util/downloadBlob.ts

@@ -0,0 +1,25 @@
+/**
+ * Downloads a blob as a file.
+ * @param {Blob} blob - The blob to download.
+ * @param {string} fileName - The name of the file to be downloaded.
+ * @returns {Promise<void>} - A promise that resolves when the download is complete.
+ */
+export default function downloadBlob(blob: Blob, fileName: string): Promise<void> {
+    return new Promise((resolve, reject) => {
+        const url = URL.createObjectURL(blob);
+        const link = document.createElement('a');
+
+        link.href = url;
+        link.download = fileName;
+
+        link.addEventListener('click', () => {
+            URL.revokeObjectURL(url);
+            resolve();
+        });
+        link.addEventListener('error', () => {
+            URL.revokeObjectURL(url);
+            reject(new Error('Download failed'));
+        });
+        link.click();
+    });
+}