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

```ts
type DbWorkerWriteRequest =
  | {
      id: EvoluInstanceId;
      message: ExtractTyped<EvoluInput, "Mutate">;
      type: "ForEvolu";
    }
  | {
      message: {
        inputMessage: Uint8Array;
        owner: Owner;
        type: "ApplySyncMessage";
      };
      type: "ForSharedWorker";
    };
```

Defined in: [packages/common/src/local-first/Shared.ts:234](https://github.com/evoluhq/evolu/blob/ecbac001e0c18bbc45b44715f49ecc3a768c5ec9/packages/common/src/local-first/Shared.ts#L234)