---
url: /api/symbols/workbox-swkit/streams/strategy.md
---

# strategy

Function @vite-pwa/workbox-swkit/streams

```ts
strategy(sourceFunctions: StreamsHandlerCallback[], headersInit?: HeadersInit): RouteHandlerCallback
```

A shortcut to create a strategy that could be dropped-in to Workbox's router.

On browsers that do not support constructing new `ReadableStream`s, this
strategy will automatically wait for all the `sourceFunctions` to complete,
and create a final response that concatenates their values together.

### Parameters

* `sourceFunctions` – An array of functions similar to workbox-routing~handlerCallback
  but that instead return a StreamSource (or a
  Promise which resolves to one).

* `headersInit` – If there's no `Content-Type` specified,
  `'text/html'` will be used by default.

**Returns:**