## fromReadableStream ```ts function fromReadableStream( readableStream: ReadableStream ): IObservable> ``` Creates an Observable from a [ReadableStream](https://streams.spec.whatwg.org/#rs-class). It emits values in the form of Notifications. See [fromReadableStreamReader](../from-readable-stream-reader/from-readable-stream-reader.md) for more details. ### Examples #### Read data from a Response (Body) ```ts async function run() { const response = await fetch('https://somefile'); const subscribe = fromReadableStream(response.body); subscribe((notification) => { console.log(notification.name, ':', notification.value); }) } run(); ``` Output: ```text next: ArrayBuffer next: ArrayBuffer complete ```