Astro v5: AlpineJS alpine:init event not working

[xandermann]

Astro Info

Astro                    v5.0.4
Node                     v23.4.0
System                   Linux (x64)
Package Manager          npm
Output                   static
Adapter                  none
Integrations             @astrojs/alpinejs

If this issue only occurs in one browser, which browser is a problem?

No response

Describe the Bug

The event of AlpineJS alpine:init is not working anymore in Astro 5.

document.addEventListener('alpine:init', () => {
    console.log("test") // never called in astro 5
});

It works in astro 4.16.17, but not in astro 5.0.4

What's the expected result?

document.addEventListener('alpine:init', () => {
// this event should be triggered
});

The AlpineJS documentation shows that it should work : https://alpinejs.dev/globals/alpine-data

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-sscqvr22?file=src%2Fpages%2Findex.astro

Participation

• I am willing to submit a pull request for this issue.

[florian-lefebvre]

I'm surprised this even worked in v4, since the recommend way for Astro is to use the entrypoint option, see updated reproduction.

I wonder is this is caused by this breaking change https://docs.astro.build/en/guides/upgrade-to/v5/#script-tags-are-rendered-directly-as-declared