Re: [whatwg/fetch] Request body streams that cannot be retried (#538)

> BTW, generally what makes a different between showing on console or exposing API for a "error"?

Generally we don't let sites learn about network errors so they do not get information about the user's environment or servers. Putting this in the console is harmless (although with Spectre...). Some of these security decisions have been upended by various Performance WG efforts and I haven't really tried to sort those out (and unfortunately neither have they), but until someone has done the work to define the contract better about what is okay to expose I rather hold the line.

> "race to the bottom" means just caching a whole stream that makes Streams API memory-inefficient?

Right, a big reason for offering this is allowing minimal memory usage.

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