# Function: parseSyncMessage()

```ts
function parseSyncMessage(value): SyncMessage | null;
```

Defined in: [packages/core/src/sync/sync-messages.ts:91](https://github.com/leifriksheim/minca/blob/main/core/src/sync/sync-messages.ts#L91)

Checks that something a peer sent is a sync message this peer speaks.

## Parameters

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

## Returns

[`SyncMessage`](https://minca.dev/api/core/type-aliases/SyncMessage.md) \| `null`