Aschen / webblob-experiment

Experimentation around a lazy Blob working in the browser

WebBlob Experiment

The WebBlob class is an extension of the Blob class that allows you to create a Blob from an URL.

The remote source will be lazy loaded, either by slices or by a stream.

The goal is to be able to use WebBlob as a replacement of Blob in API such as fetch.

Unfortunately, it seems like Firefox and Chrome does not support this extended Blob, despite the fact that it implements exactly the same API.

Thus, it does works with Node.js fetch implementation.

https://bugzilla.mozilla.org/show_bug.cgi?id=1826243

https://bugs.chromium.org/p/chromium/issues/detail?id=1430298

Run the experiment

1. Clone this repository
2. Install dependencies npm install
3. Run the server node server.js
4. Open http://localhost:3000 in your browser
5. Click "Upload with Blob" or "Upload with WebBlob"

When uploading with a WebBlob as the body of fetch, the request received by the server does not contains any data in the body.