I've created this issue mostly to monitor the two issues that I linked below.

After plumbing into the inner workings of broserify and the Web platform, I've found that sadly stream upload is not supported for browsers. This means that we can't use a stream to write properties or invoke actions. Solving this issue is going to be tricky but I hope to find a patch that will only be active on browser environments.

For the ones that are curious. Here are the relevant issues:
whatwg/fetch#1438
https://bugs.chromium.org/p/chromium/issues/detail?id=688906

Originally posted by @relu91 in #785 (comment)