[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:63](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/web/src/Worker.ts#L63)

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.