alt Hacker NewsYou can pipe through a TransformStream that counts how many bytes you've uploaded, right?
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zachrip • yesterday at 9:39 PM
That is a way to approximate it, though I'd be curious to know the semantics compared to xhr - would they both show the same value at the same network lifecycle of a given byte?
That would show how quickly the data is passing into the native fetch call but doesn’t account for kind of internal buffer it might have, network latency etc