# isSynapseError

> **isSynapseError**(`value`): `value is SynapseError`

Defined in: [packages/synapse-core/src/errors/base.ts:14](https://github.com/FilOzone/synapse-sdk/blob/e853a1d93da8c983371ffce4424cdb8996cc06ff/packages/synapse-core/src/errors/base.ts#L14)

Check if a value is a SynapseError

## Parameters

| Parameter | Type |
| ------ | ------ |
| `value` | `unknown` |

## Returns

`value is SynapseError`