fix(query-persist-client-core): allow restoring null values (#9747)

DamianOsipiuk · web-flow · commit 846d53d98992 · 2025-10-10T23:18:36.000+02:00
diff --git a/.changeset/tender-cameras-brush.md b/.changeset/tender-cameras-brush.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/query-persist-client-core': patch
+---
+
+allow restoring null values
diff --git a/packages/query-persist-client-core/src/createPersister.ts b/packages/query-persist-client-core/src/createPersister.ts
@@ -221,7 +221,7 @@ export function experimental_createQueryPersister<TStorageValue = string>({
         },
       )
 
-      if (restoredData != null) {
+      if (restoredData !== undefined) {
         return Promise.resolve(restoredData as T)
       }
     }

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +'@tanstack/query-persist-client-core': patch
 +---
++
 +allow restoring null values
Original file line number	Diff line number	Diff line change
`@@ -221,7 +221,7 @@ export function experimental_createQueryPersister<TStorageValue = string>({`
`221`	`221`	`},`
`222`	`222`	`)`
`223`	`223`
`224`		`- if (restoredData != null) {`
	`224`	`+ if (restoredData !== undefined) {`
`225`	`225`	`return Promise.resolve(restoredData as T)`
`226`	`226`	`}`
`227`	`227`	`}`