From ca50dd171bd28b4fcebdc896fc4e86ac6c944b61 Mon Sep 17 00:00:00 2001
From: Dylan Jeffers <dylan@audius.co>
Date: Wed, 14 Jun 2023 15:57:08 -0700
Subject: [PATCH] [C-2770] Fix issue where playlist library can disappear
 (#3596)

---
 .../packages/common/src/store/cache/reducer.ts           | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/apps/audius-client/packages/common/src/store/cache/reducer.ts b/apps/audius-client/packages/common/src/store/cache/reducer.ts
index 7554b424351..5fb35d5da6e 100644
--- a/apps/audius-client/packages/common/src/store/cache/reducer.ts
+++ b/apps/audius-client/packages/common/src/store/cache/reducer.ts
@@ -85,8 +85,7 @@ const unwrapEntry = (entry: { metadata: any }) => {
 const forceUpdateKeys = new Set([
   'field_visibility',
   'followee_reposts',
-  'followee_saves',
-  'playlist_library'
+  'followee_saves'
 ])
 
 // Customize lodash recursive merge to never merge
@@ -100,6 +99,12 @@ export const mergeCustomizer = (objValue: any, srcValue: any, key: string) => {
     return srcValue || objValue
   }
 
+  // Not every user request provides playlist_library,
+  // so always prefer it's existence, starting with latest
+  if (key === 'playlist_library') {
+    return objValue || srcValue
+  }
+
   // Delete is unidirectional (after marked deleted, future updates are not reflected)
   if (key === 'is_delete' && objValue === true && srcValue === false) {
     return objValue