Re: [streams] Real time source and skipping (#383)

Correct, in this diagram the source has no back-pressure support. The mouse position example is equivalent to a variable frame rate frame push source. In the frame source case, you can have sources that have back-pressure support.
But as a consumer of the readable stream, I have no idea if the source has back pressure or not. All I want is to get the latest frame when I'm ready for it.

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https://github.com/whatwg/streams/issues/383#issuecomment-126481231