# UseUploadProps

Defined in: [synapse-react/src/warm-storage/use-upload.ts:10](https://github.com/FilOzone/synapse-sdk/blob/32f86959b0bf15557657ea412e31a0897440ca98/packages/synapse-react/src/warm-storage/use-upload.ts#L10)

## Properties

### mutation?

> `optional` **mutation**: [`Omit`](https://www.typescriptlang.org/docs/handbook/utility-types.html#omittype-keys)\<`MutateOptions`\<[`AddPiecesSuccess`](/reference/filoz/synapse-core/sp/type-aliases/addpiecessuccess/), [`Error`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Error), [`UseUploadVariables`](/reference/filoz/synapse-react/interfaces/useuploadvariables/), `unknown`\>, `"mutationFn"`\>

Defined in: [synapse-react/src/warm-storage/use-upload.ts:16](https://github.com/FilOzone/synapse-sdk/blob/32f86959b0bf15557657ea412e31a0897440ca98/packages/synapse-react/src/warm-storage/use-upload.ts#L16)

***

### onHash()?

> `optional` **onHash**: (`hash`) => `void`

Defined in: [synapse-react/src/warm-storage/use-upload.ts:14](https://github.com/FilOzone/synapse-sdk/blob/32f86959b0bf15557657ea412e31a0897440ca98/packages/synapse-react/src/warm-storage/use-upload.ts#L14)

The callback to call when the hash is available.

#### Parameters

| Parameter | Type |
| ------ | ------ |
| `hash` | `string` |

#### Returns

`void`

***

### sessionKey?

> `optional` **sessionKey**: [`SessionKey`](/reference/filoz/synapse-core/session-key/interfaces/sessionkey/)

Defined in: [synapse-react/src/warm-storage/use-upload.ts:15](https://github.com/FilOzone/synapse-sdk/blob/32f86959b0bf15557657ea412e31a0897440ca98/packages/synapse-react/src/warm-storage/use-upload.ts#L15)