From 60931b86c38b149a3220a3ac402e14642b050ffb Mon Sep 17 00:00:00 2001
From: Simon Detheridge <s@sd.ai>
Date: Tue, 13 Oct 2020 09:53:19 +0100
Subject: [PATCH] Don't try to delete files if none are found in a directory

---
 libraries/object-persistor/src/GcsPersistor.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/libraries/object-persistor/src/GcsPersistor.js b/libraries/object-persistor/src/GcsPersistor.js
index 3f7b7a5be3..a6a5e60186 100644
--- a/libraries/object-persistor/src/GcsPersistor.js
+++ b/libraries/object-persistor/src/GcsPersistor.js
@@ -220,9 +220,15 @@ module.exports = class GcsPersistor extends AbstractPersistor {
         .bucket(bucketName)
         .getFiles({ directory: key })
 
-      await asyncPool(this.settings.deleteConcurrency, files, async (file) => {
-        await this.deleteObject(bucketName, file.name)
-      })
+      if (Array.isArray(files) && files.length > 0) {
+        await asyncPool(
+          this.settings.deleteConcurrency,
+          files,
+          async (file) => {
+            await this.deleteObject(bucketName, file.name)
+          }
+        )
+      }
     } catch (err) {
       const error = PersistorHelper.wrapError(
         err,