sw-transfer-stream VS readable-stream

To achieve this specific task, once an HTML page is loaded into the browser, and a ServiceWorker is registered for that scope, the server does not need to remain active to maintain the functionality of intercepting requests from the Web page (popup window) to the ServiceWorker, where the ServiceWorker can itself make requests to, for example, the same local server to execute parec and pipe output to multiple EventSource responses within the same initial connection, or pipe data to a single ReadableStream served with Response() and event.respondWith(), e.g., see https://github.com/guest271314/offscreen-webrtc, https://github.com/guest271314/sw-transfer-stream.

I've already built it https://github.com/guest271314/captureSystemAudio#web-accessible-resources-transferable-streams-media-capture-transform-breakout-box, https://github.com/guest271314/captureSystemAudio/blob/master/native_messaging/capture_system_audio/capture_system_audio.js; see also https://github.com/guest271314/sw-transfer-stream and https://github.com/guest271314/offscreen-webrtc. I'm just trying to reduce steps https://github.com/guest271314/requestClient.

Yes, you can create an iframe and/or a new window that you have complete control of to execute arbitrary code using either localhost or an extension; e.g., https://github.com/guest271314/sw-transfer-stream, https://github.com/guest271314/offscreen-webrtc.

Open new window to transfer data from ServiceWorker to arbitrary Web page https://github.com/guest271314/sw-transfer-stream

There are workarounds which involve using an iframe https://github.com/guest271314/persistent-serviceworker/tree/main/chromium_extension_web_accessible_resources_iframe_message_event or window.open() https://github.com/guest271314/sw-transfer-stream or and offscreen document https://github.com/guest271314/offscreen-webrtc with WebRTC - however that involves loading an entire HTML document, and each has its own deficienfies - with all of the Window features that we do not really need just to transfer data between the Web page I have control of and the ServiceWorker I have control of.

If it's a readable stream, you can just directly consume it with an async iterator: https://nodejs.org/api/stream.html#streams-compatibility-wit...

Node.js Stream

Note that the older Node.js streams API hasn't been deprecated or removed. It will co-exist with the new API, and it even provides a way to convert from a web stream and vice versa using the .fromWeb() and .toWeb() methods (both added in Node 17, although both methods still retain their experimental status).

Nodejs has piepes with its stream https://nodejs.org/api/stream.html

You then want what's invoked by that event to be consumed as a Response. NodeJS has something to replicate this with stream consumers where you can do all the response.text() you normally do.

[3] - https://github.com/nodejs/readable-stream/

First, we create a NodeJS ReadStream using fs.createWriteStream to open the test.log file in "append" mode. Then we start recursively looping using setTimeout. This simulates an application that logs text in the file at a variable rate. At each iteration:

This needs a comparison with streams, which is the standard way to achieve this in Node.js land.

https://nodejs.org/api/stream.html