[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) › DbWorkerReadRequest

```ts
type DbWorkerReadRequest =
  | {
      id: EvoluInstanceId;
      message: ExtractTyped<EvoluInput, "Query" | "Export">;
      type: "ForEvolu";
    }
  | {
      message: {
        owners: NonEmptyReadonlyArray<Owner>;
        type: "CreateSyncMessages";
      };
      type: "ForSharedWorker";
    };
```

Defined in: [packages/common/src/local-first/Shared.ts:249](https://github.com/evoluhq/evolu/blob/ecbac001e0c18bbc45b44715f49ecc3a768c5ec9/packages/common/src/local-first/Shared.ts#L249)