To be honest, I didn't have time yet to take a look at those frameworks.
I think the great difference between stencil and svelte is that is Svelte is not Web Component-based.
Is that an advantage or disadvantage that it's not component based?
From my point of view, it's an advantage. @Rich Harris made an amazing post here on DEV talking about why he is not using web components.
There's an important distinction between developing in web components and compiling to web components, like Stencil does.
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