snapshot of https://github.com/TanStack/query.git (main, 2026-09-16; blobs > 131072B omitted)

docs/framework/preact/reference/functions/hashKey.md

@@ -0,0 +1,30 @@
+---
+id: hashKey
+title: hashKey
+---
+
+```ts
+function hashKey(queryKey): string;
+```
+
+Defined in: [packages/query-core/src/utils.ts:284](https://github.com/TanStack/query/blob/main/packages/query-core/src/utils.ts#L284)
+
+Default query & mutation keys hash function.
+Hashes the value into a stable hash.
+
+## Parameters
+
+### queryKey
+
+readonly `unknown`[]
+
+## Returns
+
+`string`
+
+## Example
+
+```ts
+// Object keys are sorted, so key order doesn't affect the hash:
+hashKey(['todos', { page: 1, filter: 'done' }]) // === '["todos",{"filter":"done","page":1}]'
+```