Fix site export in offline mode

[bcotrim]

Related issues

• Fixes STU-1258

Proposed Changes

• Fix sqlite export command to use absolute path /wordpress/<filename> instead of relative path. The WASM filesystem mounts the site at /wordpress but PHP's working directory isn't set there, causing relative paths to fail. This is the same fix applied to sqlite import in PR Fix backup import for Jetpack, Local, Wpress and Studio formats #2422.
• Fix getSitePlugins and getSiteThemes to tolerate stderr warnings when stdout contains valid JSON. When offline, WordPress produces warnings about being unable to connect to WordPress.org for update checks, but the plugin/theme list commands still return valid data.

Testing Instructions

1. Create a site in Studio and start it
2. Disconnect from the internet
3. Export the site using "Export site" option
4. Verify the export completes successfully without errors
5. Reconnect to the internet
6. Export the site again to verify it still works when online
7. (Optional) Import the exported backup to verify it's valid

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[bcotrim]

Unrelated change to fix npm run lint warning.

[wpmobilebot]

📊 Performance Test Results

Comparing f798c84 vs trunk

site-editor

Metric	trunk	f798c84	Diff	Change
load	2891.00 ms	3000.00 ms	+109.00 ms	🔴 3.8%

site-startup

Metric	trunk	f798c84	Diff	Change
siteCreation	8068.00 ms	8097.00 ms	+29.00 ms	🔴 0.4%
siteStartup	3935.00 ms	3922.00 ms	-13.00 ms	🟢 -0.3%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change

[ivan-ottinger]

Thank you for the fix, Bernardo! The changes look good and I can confirm they resolve the issue. Export now works well while being offline.

I did not observe any regressions - online export still runs as before. Import as well. 👍🏼

[epeicher]

Thanks @bcotrim for fixing this! I have tested it, and it works as expected, I am able to export site in offline mode while I can reproduce the error in trunk. I have left a question out of curiosity, but changes LGTM!

[epeicher]

Parsing the output first makes sense 👍

One question about the code is that we are parsing stdout, but the comment mentions WordPress may produce warnings on stderr, should that be stdout in the comment 🤔 ?

[bcotrim]

Good catch, I updated the comment in f798c84
Let me know if it's clear now 🙏

[epeicher]

That's much clearer now, and it makes total sense, thanks for updating!

[gcsecsey]

Thanks for the fix @bcotrim! These changes LGTM, I tested them on Windows to make sure the path updates work there too. I confirm being able to export and reimport sites without issues now. 👍

CleanShot.2026-01-27.at.12.10.47.mp4