change _.isUndefined to === undefined

Signed-off-by: shirady <57721533+shirady@users.noreply.github.com>

src/sdk/accountspace_fs.js

@@ -481,15 +481,15 @@ class AccountSpaceFS {
     }
 
     _check_root_account(account) {
-        if (_.isUndefined(account.owner) ||
+        if (account.owner === undefined ||
             account.owner === account._id) {
             return true;
         }
         return false;
     }
 
     _check_root_account_owns_user(root_account, user_account) {
-        if (_.isUndefined(user_account.owner)) return false;
+        if (user_account.owner === undefined) return false;
         return root_account._id === user_account.owner;
     }
 
@@ -528,7 +528,7 @@ class AccountSpaceFS {
                 if (entry.name.includes(config.NSFS_TEMP_CONF_DIR_NAME)) return undefined;
                 if (this._check_root_account_owns_user(requesting_account, account_data)) {
                     if (should_filter_by_prefix) {
-                        if (_.isUndefined(account_data.iam_path)) return undefined;
+                        if (account_data.iam_path === undefined) return undefined;
                         if (!account_data.iam_path.startsWith(iam_path_prefix)) return undefined;
                     }
                     const user_data = {
@@ -655,7 +655,7 @@ class AccountSpaceFS {
             return { is_root_account_or_user_on_itself, requester};
         }
         // user (on himself) - username can be undefined
-        if (_.isUndefined(username) || requesting_account_name === username) {
+        if (username === undefined || requesting_account_name === username) {
             const username_to_use = username ?? requesting_account_name;
             requester = {
                 name: username_to_use,
@@ -679,7 +679,7 @@ class AccountSpaceFS {
 
     _get_available_index_for_access_key(access_keys) {
         // empty array or array with 1 access keys in index 1
-        if (access_keys.length === 0 || _.isUndefined(access_keys[0])) {
+        if (access_keys.length === 0 || access_keys[0] === undefined) {
             return 0;
         }
         return 1;