fix(analytics): reconnect frontend port after the background restarts by creeperkatze · Pull Request #2650 · wxt-dev/wxt

creeperkatze · 2026-10-04T15:38:39Z

Overview

Extension pages and content scripts connected to the background only once. When the MV3 service worker stopped (after ~30s idle), that connection was closed, and every later call threw Attempting to use a disconnected port object, so the event was lost. The client now reconnects when the connection has closed.

Manual Testing

Run bun run dev:build in packages/analytics and load .output/chrome-mv3 in Chrome.
Open chrome-extension://<id>/popup.html in a tab and click a button.
Stop the extension's service worker in chrome://serviceworker-internals.
Back in the tab, toggle the "enabled" checkbox. The tab's console should show no Attempting to use a disconnected port object error, and await chrome.storage.local.get() should show 'local:wxt-analytics:enabled': true.

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coderabbitai · 2026-10-04T15:38:48Z

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📝 Walkthrough

Walkthrough

The frontend analytics client now creates its runtime port on demand. It clears the cached port after disconnect and uses the current port to forward messages.

Changes

Analytics port lifecycle

Layer / File(s)	Summary
Lazy port creation and forwarding `packages/analytics/modules/analytics/client.ts`	The client now creates its port on demand and clears the reference when the port disconnects. The method forwarder posts messages through the current port. The browser import includes the `Browser` type.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Merge Risk: 🟡 Moderate · up to 1936a

A narrow disconnect race can still drop analytics events; retry sends through a fresh port before merging.

Architecture Summary

Architecture risk: 🔵 Low · up to 1936a

The change affects 1 system.

Changed systems: packages/analytics

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

observed — packages/analytics (library) was modified; 1 changed file maps to changed impact.

Before / after behavior

observed — Modified behavior in packages/analytics/modules/analytics/client.ts: The browser import now also imports the Browser type.
observed — Modified behavior in packages/analytics/modules/analytics/client.ts: The frontend client replaces its eagerly created port with a lazy getPort accessor. When the port disconnects, its reference is cleared so a later call can establish a new connection.
observed — Modified behavior in packages/analytics/modules/analytics/client.ts: The method forwarder now posts messages through getPort(), using the current or newly connected port rather than the original eagerly created port.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: reconnecting the frontend port after the background restarts.
Description check	✅ Passed	The description provides a clear overview and detailed manual testing steps with expected results. It omits the template’s Related Issue section and issue-closing line, but the main information is com…
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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creeperkatze · 2026-10-04T15:38:59Z

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coderabbitai · 2026-10-04T15:39:06Z

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Actionable comments posted: 1

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Inline comments:
Review comments at @packages/analytics/modules/analytics/client.ts:
- Around line 284-310: Update getPort and methodForwarder so a failed send on a
disconnected cached port retries once using a newly connected port, preserving
the method’s promise behavior. In the onDisconnect callback, clear port only if
it still references the port that disconnected, so an older callback cannot
clear a replacement connection.

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packages/analytics/modules/analytics/client.ts

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pkg-pr-new · 2026-10-08T18:33:08Z

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@wxt-dev/analytics

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commit: fe39947

codecov · 2026-10-08T18:33:36Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.63%. Comparing base (c89749b) to head (fe39947).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2650   +/-   ##
=======================================
  Coverage   79.63%   79.63%           
=======================================
  Files         138      138           
  Lines        4111     4111           
  Branches      943      943           
=======================================
  Hits         3274     3274           
- Misses        738      739    +1     
+ Partials       99       98    -1

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PatrykKuniczak

That's some kind of edge case, but yeah nice catch.

Thanks for your work 😃

github-actions · 2026-10-08T19:08:30Z

Thanks for helping make WXT better!

fix(analytics): reconnect frontend port after the background restarts

1936a55

creeperkatze requested review from PatrykKuniczak, aklinker1 and nishu-murmu as code owners October 4, 2026 15:38

github-actions Bot assigned creeperkatze Oct 4, 2026

github-actions Bot added the pkg/analytics Includes changes to the `packages/analytics` directory label Oct 4, 2026

coderabbitai Bot reviewed Oct 4, 2026

View reviewed changes

Comment thread packages/analytics/modules/analytics/client.ts

Merge branch 'main' into fix/analytics-reconnect-port

fe39947

PatrykKuniczak approved these changes Oct 8, 2026

View reviewed changes

PatrykKuniczak merged commit 2af9c15 into wxt-dev:main Oct 8, 2026
19 checks passed

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fix(analytics): reconnect frontend port after the background restarts - #2650

fix(analytics): reconnect frontend port after the background restarts#2650
PatrykKuniczak merged 2 commits into
wxt-dev:mainfrom
creeperkatze:fix/analytics-reconnect-port

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creeperkatze commented Oct 4, 2026

Overview

Manual Testing

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