[🐞] Deprecation Warnings: `SharedStorage` and `AttributionReporting` in Partytown when running PageSpeed Insights

[wlans]

Describe the bug

When running an audit via https://pagespeed.web.dev/ , deprecation warnings appear in the browser console related to APIs that are scheduled for removal.

⚠️ Deprecation / Warning

File:

/~partytown/partytown-sandbox-sw.html?... 

Location: :2:11622

Affected APIs

• SharedStorage
• AttributionReporting

Context

The warnings originate from the Partytown sandbox service worker:

/~partytown/partytown-sandbox-sw.html

This occurs during a PageSpeed Insights / Lighthouse run.

It is unclear whether:

• Partytown directly references these APIs, or
• A third-party script executed within the Partytown sandbox is triggering them.

Expected Behavior

No deprecated API warnings during Lighthouse/PageSpeed audits.

Actual Behavior

Console logs deprecation warnings for:

• SharedStorage
• AttributionReporting

Impact

Although functionality does not appear to break, deprecated APIs may be removed in future browser versions and could potentially impact analytics or third-party scripts running inside Partytown.

Reproduction

https://github.com/QwikDev/partytown

Steps to reproduce

Run lighthouse on latest version of webapp using partytown

Browser Info

Chrome

Additional Information

No response

[AlexJohnSadowski]

I've just actually created a pull request and tested the fix: PR

If some of the maintainers could take a look at it and merge it, that would be awesome.