---
id: useMutationState
title: useMutationState
---

# Function: useMutationState()

```ts
function useMutationState<TResult>(options, queryClient?): Readable<TResult[]>
```

## Type Parameters

• **TResult** = `MutationState`\<`unknown`, `Error`, `unknown`, `unknown`\>

## Parameters

### options

[`MutationStateOptions`](../../type-aliases/mutationstateoptions.md)\<`TResult`\> = `{}`

### queryClient?

`QueryClient`

## Returns

`Readable`\<`TResult`[]\>

## Defined in

[packages/svelte-query/src/useMutationState.ts:24](https://github.com/TanStack/query/blob/main/packages/svelte-query/src/useMutationState.ts#L24)