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---
id: DefaultOptions
title: DefaultOptions
---
Defined in: [packages/query-core/src/types.ts:1507](https://github.com/TanStack/query/blob/main/packages/query-core/src/types.ts#L1507)
## Type Parameters
### TError
`TError` = [`DefaultError`](../type-aliases/DefaultError.md)
## Properties
### dehydrate?
```ts
optional dehydrate: DehydrateOptions;
```
Defined in: [packages/query-core/src/types.ts:1518](https://github.com/TanStack/query/blob/main/packages/query-core/src/types.ts#L1518)
Default options used when dehydrating the client's caches; see [DehydrateOptions](DehydrateOptions.md).
***
### hydrate?
```ts
optional hydrate: object;
```
Defined in: [packages/query-core/src/types.ts:1516](https://github.com/TanStack/query/blob/main/packages/query-core/src/types.ts#L1516)
Default options used when hydrating queries; see [HydrateOptions](HydrateOptions.md).
#### deserializeData?
```ts
optional deserializeData: TransformerFn;
```
Transforms a query's `data` after it is read from the dehydrated state, reversing `serializeData`.
#### mutations?
```ts
optional mutations: MutationOptions<unknown, Error, unknown, unknown>;
```
Default options merged into every mutation restored from the dehydrated state.
#### queries?
```ts
optional queries: QueryOptions<unknown, Error, unknown, readonly unknown[], never>;
```
Default options merged into every query restored from the dehydrated state.
***
### mutations?
```ts
optional mutations: MutationObserverOptions<unknown, TError, unknown, unknown>;
```
Defined in: [packages/query-core/src/types.ts:1514](https://github.com/TanStack/query/blob/main/packages/query-core/src/types.ts#L1514)
Default options applied to every mutation, unless overridden per-mutation.
***
### queries?
```ts
optional queries: OmitKeyof<QueryObserverOptions<unknown, TError, unknown, unknown, readonly unknown[], never>, "queryKey" | "suspense", "strictly">;
```
Defined in: [packages/query-core/src/types.ts:1509](https://github.com/TanStack/query/blob/main/packages/query-core/src/types.ts#L1509)
Default options applied to every query, unless overridden per-query.