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Support Map and Set as query keys #9199

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Support Map and Set as query keys #9199

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19 changes: 12 additions & 7 deletions packages/query-core/src/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -210,16 +210,21 @@ export function hashQueryKeyByOptions<TQueryKey extends QueryKey = QueryKey>(
* Hashes the value into a stable hash.
*/
export function hashKey(queryKey: QueryKey | MutationKey): string {
return JSON.stringify(queryKey, (_, val) =>
isPlainObject(val)
? Object.keys(val)
return JSON.stringify(queryKey, (_, val) => {
const thingToHash =
val instanceof Map || val instanceof Set
? Object.fromEntries([...val.entries()])
: val;

return isPlainObject(thingToHash)
? Object.keys(thingToHash)
.sort()
.reduce((result, key) => {
result[key] = val[key]
return result
result[key] = thingToHash[key];
return result;
}, {} as any)
: val,
)
: thingToHash;
});
}

/**
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