# isViemError

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

Defined in: [packages/synapse-core/src/utils/contract-errors.ts:29](https://github.com/FilOzone/synapse-sdk/blob/e4bb19e83f9c426be18e2199d205e637240da374/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`