[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:103](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Worker.ts#L103)

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