[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Worker](https://evolu.dev/docs/api-reference/common/Worker) › CreateMessagePort

```ts
type CreateMessagePort = <Input, Output>(
  nativePort: NativeMessagePort<Input, Output>,
) => MessagePort<Input, Output>;
```

Defined in: [packages/common/src/Worker.ts:117](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Worker.ts#L117)

Factory function to create a [MessagePort](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessagePort) from a native port.