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> The compiler allows the interface to appear progressively as the model generates it, without waiting for the entire response to be complete.

why not just stream html?

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The element can’t render until it’s closed, presumably.

Html partial streaming is a real thing, presumably

maybe I'm just wrong here? If the tokens <b>come through this text could still be optimistically turned bold until </b> happens.

For elements that manage layout and drawing things like these explainers, though, it's hard for me to imagine how that would work. My immediate thought would be to an abstraction over it, which is what it sounds like they did.

They could also just be creating all the html elements using javascript (i.e. document.createElement, document.body.appendChild, etc) and streaming that into a repl line by line.

That's not how html works. The html parser is by definition streaming.

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