# isViemError

> **isViemError**(`error`): `error is BaseError`

Defined in: [packages/synapse-core/src/utils/contract-errors.ts:29](https://github.com/FilOzone/synapse-sdk/blob/9fa121f392b920db0aaef2c03e5379b268015189/packages/synapse-core/src/utils/contract-errors.ts#L29)

Check if the error is a viem error

## Parameters

| Parameter | Type |
| ------ | ------ |
| `error` | `unknown` |

## Returns

`error is BaseError`