Codesandbox Svelte + Material Design demos are broken

[KCErb]

Describe the bug
I wanted to try out Svelte and found the SMUI library to make a prettier prototype. But I quickly found that the demo didn't work. The material buttons etc. are not looking right. I will cross-post this to the SMUI team but I'm putting it here because among all the SMUI demos I've found they all have the same error message in common which points to svelte:

Error when converting '/node_modules/svelte/internal/index.mjs' esmodule to commonjs: [1166:376]: Unterminated regular expression 

To Reproduce
This is where codesandbox comes in. I just happen to have noticed that all of their demos are broken. Maybe this is their fault but at least for now it's a way of reproducing easily:
https://codesandbox.io/s/gi8p3
https://codesandbox.io/s/svelte-todos-app-material-hldhp

Expected behavior
In both of those examples (there are others) we can see the JS and vanilla CSS and Font icons all working. But none of it is "material".

Information about your Svelte project:
The codesandboxes have all dependencies / specs. One uses rollup the other uses neither rollup nor webpack.

Severity
I'm trying to do a demo to my dev team and we like to use codesandbox as a way of removing the environment part of the equation. So it's blocking us from prototyping / demoing this tech.

[antony]

Hi @KCErb - I appreciate you filing this, but there isn't anything that we specifically can do about this. It's not a problem with Svelte, it's an issue with the demos, or the way codesandbox is set up, the bundler, or possibly the SMUI library.

Since this isn't a Svelte issue, I'm going to close this and hopefully the authors of SMUI can come up with a fix. In the meantime, It's also worth noting that the versions of Svelte and Rollup used in those demos is quite a long way out of date. It might be a better idea to build an updated demo based on the official Svelte component/app template to demonstrate to your team.

[KCErb]

Thanks Antony, I figured as much but thought I'd just check with you good folks while I was at it.

As for the versions, this came up with the newest versions too ... but I agree, probably an issue with the sandbox folks.