Svelte 4?

[thoennes]

Possible?

[Sergeant61]

Hello, I'm wondering too, I tried it recently but it couldn't get the project up and running. It's even coming in Svelte 5, can we consider that too? I would like to help with this but I'm not sure how?

[zodern]

There's two issues with supporting svelte 4:

• It requires a newer version of Node, which requires Meteor 3
• It requires Meteor's resolver to support the exports field in package.json files, which has not been implemented

[thoennes]

Is there anything I could do to help?

…

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[NigelCunningham]

Thanks for your work!

I've successfully upgraded to Meteor 3, but trying to then upgrade to Svelte 4 gets me no errors but no content loaded. Would that be due to the issue mentioned above "It requires Meteor's resolver to support the exports field in package.json files, which has not been implemented"?

[zodern]

I'm not sure. My understanding is svelte 4 won't work in bundlers that don't support the exports field. Though svelte 4 also changed the compiler api and I haven't updated melte.

[NigelCunningham]

Thanks for the reply. Wish I could help but I'm no expert in these things.

[petr24]

What would it take to get Svelte 4.x working now that Meteor has released V3 & considering we have vite support as well.

[thomastraum]

interested too. would love to use libs like https://www.shadcn-svelte.com/

[zodern]

What would it take to get Svelte 4.x working now that Meteor has released V3 & considering we have vite support as well.

To support svelte 4 with isobuild, we need:

1. Update zodern:melte to support the svelte 4 compiler api (in addition to the svelte 3 api)
2. Test svelte 4 and see if it works
3. We probably need Feature: Support package.json exports fields meteor/meteor#11727
4. (optional) we eventually also need Meteor to support the svelte field in package.json files

To support svelte 4 with vite:

1. Extract the melte processor into an npm package that can be used with vite
2. We probably still need to support isobuild for the packages that use svelte

[petr24]

@zodern

I went ahead and added vite, removed this package, and svelte 4 works out of the box.

I obviously lose the svelte/meteor integration with $m, but Tracker.autorun works just fine for subscriptions and queries.

If I have some time this weekend, I'll play around with this and see how easily I can get this working to get back $m syntax.

[thomastraum]

thats cool!

[thoennes]

Any progress? I'm right at a point where I have time to help and a good place in my app development process to move from 3 to 4: new features competed, bugs fixed, but no release date constraints :)