fix: catch exception in exists

Author: Vinzent03

packages/storage_client/lib/src/fetch.dart

@@ -30,7 +30,13 @@ class Fetch {
     StackTrace stack,
     FetchOptions? options,
   ) {
-    if (error is http.Response && !(options?.noResolveJson == true)) {
+    if (error is http.Response) {
+      if (options?.noResolveJson == true) {
+        return StorageException(
+          error.body.isEmpty ? error.reasonPhrase ?? '' : error.body,
+          statusCode: '${error.statusCode}',
+        );
+      }
       try {
         final data = json.decode(error.body) as Map<String, dynamic>;
         return StorageException.fromJson(data, '${error.statusCode}');

packages/storage_client/lib/src/storage_file_api.dart

@@ -413,11 +413,18 @@ class StorageFileApi {
   Future<bool> exists(String path) async {
     final finalPath = _getFinalPath(path);
     final options = FetchOptions(headers: headers);
-    final response = await _storageFetch.head(
-      '$url/object/$finalPath',
-      options: options,
-    );
-    return true;
+    try {
+      await _storageFetch.head(
+        '$url/object/$finalPath',
+        options: options,
+      );
+      return true;
+    } on StorageException catch (e) {
+      if (e.statusCode == '400' || e.statusCode == '404') {
+        return false;
+      }
+      rethrow;
+    }
   }
 
   /// Retrieve URLs for assets in public buckets
@@ -481,7 +488,6 @@ class StorageFileApi {
       body,
       options: options,
     );
-    print(response[0]);
     final fileObjects = List<FileObject>.from(
       (response as List).map(
         (item) => FileObject.fromJson(item),

packages/storage_client/test/client_test.dart

@@ -410,7 +410,7 @@ void main() {
   });
 
   test('check if object exists', () async {
-    await storage.from(newBucketName).upload(uploadPath, file);
+    await storage.from(newBucketName).upload('$uploadPath-exists', file);
     final res = await storage.from(newBucketName).exists(uploadPath);
     expect(res, true);