Hmm I briefly looked at it and I am certainly intrigued. I really like the simplicity of await blocks, but I have some reservations about the template syntax, namely that it reminds me a lot of angular.js. Syntax like

  {#each cats as cat}

reminds me of ng-repeat, and of course there are other similarities.

I'm not necessarily saying that that's bad, but as a matter of personal preference I tend to prefer the html-into-JS approach of JSX / React over what is essentially implementing a subset of javascript as part of the template syntax.

I don't like that you have to ask what parts of javascript you are allowed to use within a template.

I thought that too! I did see Rollup, though.

NYT uses Svelt and Rollup for great stuff like this -- "Keep On Scrollin'!":

https://www.nytimes.com/interactive/2018/01/27/technology/so...

I like emphasis on performance by keeping things light on the browser. I feel many of the popular frameworks focus too much on abstraction rather than providing the best user experience for the end user (primarily load times and disregard for accessibility).

Thanks for sharing!