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

```ts
function createSharedWorker<Input, Output>(
  nativeSharedWorker: SharedWorker,
): SharedWorker<Input, Output>;
```

Defined in: [Worker.ts:60](https://github.com/evoluhq/evolu/blob/b6ade4b22d4be1758761a2712668e870d3e602c7/packages/web/src/Worker.ts#L60)

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

Call [installOneTabSharedWorkerPolyfill](https://evolu.dev/docs/api-reference/web/functions/installOneTabSharedWorkerPolyfill) first to support browsers
without native SharedWorker support.