[DigitalSea]

For me, the biggest downside to Svelte is the lack of TypeScript support. This is a massive deal-breaker for myself as well as many other developers. I am also not a fan of the Moustache/Handlebars inspired templating, it feels outdated in the face of enhancing standard HTML or going in the direction of something more extreme like JSX.

I think Svelte is refreshing, but I would not be comfortable using it on a large-scale web application just yet given the downsides, particularly an enterprise LOB application with many moving pieces. This is why frameworks like Angular, Ember and Aurelia on the front-end lend themselves better to the enterprise and React and other more component-based libraries do not.

In terms of community size, I don't think that matters in 2020. You don't need a big community if you have something straightforward and easy to work with. Great read.

[overtowed]

It's buried in the article, but TypeScript support is being worked on by one of the TypeScript team members in collaboration with the Svelte devs - https://github.com/sveltejs/svelte/issues/4518

The template language's restrictions compared to JavaScript/JSX-built views are part of Svelte's performance story. It's able to optimize things ahead of time that are impossible with dynamic code because of the constraints. Here's a couple tweets from the author about that -

1 - https://twitter.com/Rich_Harris/status/1224414679021301761

2 - https://twitter.com/Rich_Harris/status/948231770725605377

The Svelte template language is quite small, and compositional features like slots and <svelte:component> are powerful. There are currently some unwanted edge-case restrictions as this comment points out - https://news.ycombinator.com/item?id=22541100

[aarpmcgee]

I submit that any large Ember codebase is intractable without Typescript.

[mdgrech23]

I submit that Typescript is largely overrated, adds unnecessary complexity and fails to catch a large number of issues at compile time that it should in fact catch.

[DigitalSea]

What are you basing this on?

[top_kekeroni_m8]

Like what?