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---
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)
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