[API reference](https://evolu.dev/docs/api-reference) › [@evolu/web](https://evolu.dev/docs/api-reference/web) › createMessagePort

```ts
const createMessagePort: CreateMessagePort;
```

Defined in: [Worker.ts:104](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/web/src/Worker.ts#L104)

Creates an Evolu [MessagePort](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessagePort) from a Web MessagePort.

Use this for ports received via postMessage transfer.