[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Protocol](https://evolu.dev/docs/api-reference/common/local-first/Protocol) › MessageType

```ts
type MessageType = (typeof MessageType)[keyof typeof MessageType];
```

Defined in: [packages/common/src/local-first/Protocol.ts:350](https://github.com/evoluhq/evolu/blob/ca15b4661c40fedb9f47434497086039cbdea38e/packages/common/src/local-first/Protocol.ts#L350)