fix: warn and skip duplicate extension registration instead of throwing - #14543
fix: warn and skip duplicate extension registration instead of throwing#14543mattmillerai wants to merge 15 commits into
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📝 WalkthroughWalkthroughExtension registration now uses a reactive ChangesExtension registration
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to Duplicate extension registration now warns and skips while preserving the first registration, avoiding aborted extension-file loading. The remaining merge-readiness risk is a bounded contract and test gap around the new registration result, so the change is mergeable with explicit owner follow-up. Sequence Diagram(s)sequenceDiagram
participant ExtensionService
participant ExtensionStore
participant BottomPanelStore
ExtensionService->>ExtensionStore: registerExtension
ExtensionStore-->>ExtensionService: return false for duplicate
ExtensionService-->>BottomPanelStore: skip duplicate panel registration
Suggested reviewers: 🚥 Pre-merge checks | ✅ 7✅ Passed checks (7 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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🎭 Playwright: ✅ 1983 passed, 0 failed · 1 flaky📊 Browser Reports
🎨 Storybook: ✅ Built — View Storybook📦 Bundle: 9.11 MB gzip 🟢 -62 BDetailsSummary
Category Glance App Entry Points — 3.71 kB (baseline 3.71 kB) • ⚪ 0 BMain entry bundles and manifests
Status: 1 added / 1 removed Graph Workspace — 1.38 MB (baseline 1.38 MB) • ⚪ 0 BGraph editor runtime, canvas, workflow orchestration
Status: 2 added / 2 removed / 1 unchanged Views & Navigation — 124 kB (baseline 124 kB) • ⚪ 0 BTop-level views, pages, and routed surfaces
Status: 13 added / 13 removed / 4 unchanged Panels & Settings — 591 kB (baseline 591 kB) • ⚪ 0 BConfiguration panels, inspectors, and settings screens
Status: 11 added / 11 removed / 16 unchanged User & Accounts — 27.5 kB (baseline 27.5 kB) • ⚪ 0 BAuthentication, profile, and account management bundles
Status: 6 added / 6 removed / 5 unchanged Editors & Dialogs — 125 kB (baseline 125 kB) • ⚪ 0 BModals, dialogs, drawers, and in-app editors
Status: 7 added / 7 removed / 1 unchanged UI Components — 67.1 kB (baseline 67.1 kB) • ⚪ 0 BReusable component library chunks
Status: 6 added / 6 removed / 8 unchanged Data & Services — 3.53 MB (baseline 3.53 MB) • 🔴 +242 BStores, services, APIs, and repositories
Status: 14 added / 14 removed / 3 unchanged Utilities & Hooks — 549 kB (baseline 549 kB) • ⚪ 0 BHelpers, composables, and utility bundles
Status: 18 added / 18 removed / 19 unchanged Vendor & Third-Party — 18.1 MB (baseline 18.1 MB) • ⚪ 0 BExternal libraries and shared vendor chunks Status: 18 unchanged Other — 14.1 MB (baseline 14.1 MB) • ⚪ 0 BBundles that do not match a named category
Status: 66 added / 66 removed / 219 unchanged ⚡ Performance Report
Show regressions
All metrics
Historical variance (last 15 runs)
Trend (last 15 commits on main)
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🔍 Cursor Review — Consolidated panel
Triggered by @mattmillerai.
Found 2 finding(s).
| Severity | Count |
|---|---|
| 🟡 Medium | 1 |
| 🟢 Low | 1 |
Panel: 8/8 reviewers contributed findings.
Codecov Report✅ All modified and coverable lines are covered by tests. @@ Coverage Diff @@
## main #14543 +/- ##
==========================================
+ Coverage 79.39% 81.87% +2.47%
==========================================
Files 2218 1888 -330
Lines 112288 107283 -5005
Branches 32481 31292 -1189
==========================================
- Hits 89155 87840 -1315
+ Misses 22656 19100 -3556
+ Partials 477 343 -134
Flags with carried forward coverage won't be shown. Click here to find out more.
... and 346 files with indirect coverage changes 🚀 New features to boost your workflow:
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Extension names that collide with Object.prototype keys were mishandled: 'constructor'/'toString' read back truthy and were falsely skipped as duplicates, and '__proto__' was silently dropped on assignment while registerExtension still reported success. Use a null-prototype record plus Object.hasOwn for membership checks.
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
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Can we just create a "isExtensionInstalled" primitive in safer cleaner way?
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Good call — done in f04c901. extensionByName is now a Map:
const extensionByName = ref<Map<string, ComfyExtension>>(new Map())
const isExtensionInstalled = (name: string) => extensionByName.value.has(name)That drops the two things that made the previous version subtle — the Object.create(null) record and the Object.hasOwn call — because a Map has no prototype chain and no __proto__ special case, so the primitive is correct by construction rather than by defensive coding. registerExtension's duplicate check now calls isExtensionInstalled instead of repeating the lookup, so there's one definition of "installed" behind all three call sites.
Two things I verified rather than assumed:
- Reactivity. Swapping a plain object for a
Mapbehind arefis the one real risk here, since Vue tracks collections through separate handlers. Confirmed theextensionscomputed still invalidates: readingextensions/isExtensionInstalled/hasThirdPartyExtensionsbefore a registration and again afterwards returns updated values, so nothing goes stale. - Merge-queue safety. This branch predates test: provide a testing Pinia by default #15057 (global testing Pinia), which rewrites these exact test files, so I merged
origin/mainlocally and ran the merged tree: 49 tests acrossextensionStore,extensionService, and the fourextensions/coreconsumers pass. Dropped the merge afterwards since it wasn't needed to go green.
Incidental improvement: Object.values hoists integer-like keys ahead of insertion order, so an extension named "2" used to jump the list. Map preserves true insertion order.
Existing coverage carries over unchanged — registers names that collide with Object.prototype keys still guards the original finding, and still fails against a plain-object registry.
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Re-requested your review, @christian-byrne. Leaving this thread open for you to close rather than closing it myself — per AGENTS.md, resolution on a non-trivial reviewer comment is the reviewer's call.
Nothing has changed on this since the reply above; the two commits after it are unrelated (a main merge and the CodeRabbit return-type nit). CI is green end to end.
Object.hasOwn plus a null-prototype record made isExtensionInstalled safe but not obvious. A Map has no prototype chain and no __proto__ special case, so the primitive is correct by construction and the duplicate check reuses it.
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vitest.setup.ts installs setActivePinia(createTestingPinia({ stubActions:
false })) for every test, and main removed the identical block from
extensionStore.test.ts. The copy this branch added to
extensionService.test.ts is the same config, so it is redundant.
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Follow-up on the
Verified on the merged tree, not just this branch: |
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Inline comments:
In `@src/stores/extensionStore.ts`:
- Line 63: Update the public registerExtension function declaration to
explicitly return boolean, preserving its existing boolean result and
propagation behavior.
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Heads-up on the one red X, since it is misleading:
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The store's public contract documents the return value; make it explicit so a future edit cannot silently change it.
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@coderabbitai review The one actionable finding from the last pass (declare Christian's thread is resolved too: CI is green across the board — unit tests, lint-and-format, typecheck, Playwright (1807 passed), perf, storybook. Branch is level with |
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@coderabbitai review Retrying now that the hourly review budget should have refilled — the 08:23 attempt came back rate-limited, so the stale That finding (declare function registerExtension(extension: ComfyExtension): booleanat Re-verified the branch from a clean worktree just now, nothing new to report:
No code changed on this pass — the request is purely to clear the stale review state. |
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Correction to my earlier note on the red It is not carryforward from this branch's Aug 1 lineage. No PR head commit in this repo ever receives the
#15337 is not an old branch, so branch age cannot be the explanation. Root cause: Since Filed as a separate CI follow-up (fix is No code changes this pass. Merged |
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🤖 The reviews loop filed Linear follow-up ticket(s) for review thread(s) deferred as out of scope for this PR:
The following carry
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Refreshed against
One thing worth naming rather than burying: Also carried over from the earlier pass, since it is still the only red check: Status: CodeRabbit approved, all bot threads resolved, CI green apart from the artifact above. The remaining open thread is @christian-byrne's, deliberately left for the reviewer to close rather than self-resolved — nothing has changed on it since the reply there. Awaiting human review. Adding the |
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Refreshed against The reason this refresh was worth a push rather than leaving it to the merge queue: It came back green — all four shards plus Re-verified on the merged tree, not the branch alone:
One thing I checked rather than assumed: that the No new findings, and nothing deferred. Every CodeRabbit and Cursor-panel thread is resolved and CodeRabbit has approved. @christian-byrne's thread stays open deliberately — it was addressed in code by the |
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Pushed The custom-node console ledger required the error this PR removes
ComfyUI_LayerStyle_Advance: [
{
id: 'duplicate-color-overlay',
pattern: /\[vite:preloadError\].*Extension named 'ColorOverlay' already registered\./,
requiredStartupId: 'duplicate-color-overlay',
...
}
]
That error was this PR's throw. Registering a duplicate name now warns and skips, Removed the entry. This is the ledger's documented lifecycle ( Scope of the impact
Not pre-emptable, worth watching on the next nightly: with the throw gone, both packs' Verification on the merged tree
codecov/projectStill red, still not this PR. Confirmed the mechanism directly against codecov's API rather than inferring it: the head report carries 2 upload sessions / 1,885 files, the base |
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The console-ledger removal in Why it needed a dispatch. Shard 5/5 is the one that matters — it installs both packs that collide on The evidence runs both directions. Line 99 asserts The risk the original argument missed. Removing the throw means No code changed on this pass. Rollup is 67 pass / 1 fail / 12 skipped; the single red is The open thread on |
The custom-node console ledger (#15225, landed on main after this branch was cut) requires the ColorOverlay duplicate-registration error to be observed at startup: requiredStartupId: 'duplicate-color-overlay' pattern: /\[vite:preloadError\].*Extension named 'ColorOverlay' already registered\./ That error was the throw this PR removes. Registering a duplicate name now warns and skips, so dz_node_palette.js finishes evaluating and emits no preloadError - the pattern can never match again, since the message it matches no longer exists in the frontend. Left in place, staleRequiredStartupErrorRulesForPacks would report ComfyUI_LayerStyle_Advance/duplicate-color-overlay and fail the nightly suite's stale-rule assertion. Removing the entry is the ledger's documented lifecycle for a mechanism that stops firing, and it tightens rather than loosens the gate: the pack no longer carries a suppression, so a duplicate-registration error reappearing would surface as unallowlisted.
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Pushed Why the rewrite was necessary
This was invisible on the PR until now for a timing reason worth naming: the workflow did not exist when this branch last pushed, and More to the point than the red check: A trailer cannot be removed without rewriting the commit that carries it, so the tip was amended and the branch force-pushed with The merge itselfTextually clean, and semantically inert as far as this diff is concerned — across those 19 commits Verified on the merged tree rather than the branch alone:
One failing file locally, named rather than buried: Unchanged
@christian-byrne's |
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Inline comments:
In `@src/stores/extensionStore.test.ts`:
- Around line 24-26: Update the registration test around registerExtension to
assert that the first call with the unique extension returns true, while
retaining the existing false assertion for the duplicate registration.
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- browser_tests/fixtures/customNode/consoleErrorLedger.ts
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The duplicate-name case asserted false, but no test anywhere asserted that a fresh registration returns true. That half is load-bearing: the return value is what gates extensionService's downstream registration of keybindings, commands, menu commands, settings, bottom-panel tabs, custom widgets and auth hooks, so a regression to a falsy success value would silently stop every extension registering any of them.
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Pushed It asked for the All checks green on this head: 65 pass, 13 skipped, 0 fail. That includes Also from the previous push, since it is the substantive change and easy to miss above: The branch is 1 commit behind @christian-byrne's @coderabbitai review — the one actionable comment from |
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Stale: this review was submitted against 8c65b26. Its single actionable finding (explicit : boolean return type on registerExtension) was applied in aa265ec, and CodeRabbit confirmed it and resolved the thread in #14543 (comment). Verified on the current head d9a5783: src/stores/extensionStore.ts:63 reads function registerExtension(extension: ComfyExtension): boolean. Dismissing the superseded review record only; no code review gate is being bypassed.
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No push — head is still The two dismissals. CodeRabbit had two undismissed
Worth saying why these needed dismissing rather than waiting them out. CodeRabbit normally retires its own Gate now. Independent re-verification on head, not carried over from the earlier runs: |
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The two previously reported CodeRabbit findings are no longer active review blockers. The remaining gate is the required human review, including the open thread assigned to You are interacting with an AI system. |
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ELI-5
Two copies of the same extension used to make the app throw an error, which killed the rest of that extension file mid-load. Now the second copy just logs a warning and is ignored, and the first one keeps working.
Summary
extensionStore.registerExtensionthrewExtension named '<name>' already registered.on a duplicate name. That exception fires during evaluation of third-party extension module code, so it aborts the remainder of that file, and every occurrence is captured as a session error in production RUM (duplicate vendored packs made this fire in ~7.2k sessions/week per name in a 7-day window measured 2026-07-31). Sibling stores already chose warn-and-skip for the identical situation —settingStore.addSetting("Setting already registered") andcommandStore.registerCommand("Command … already registered") — so this aligns extension registration with them.Changes
console.warnsExtension named '<name>' already registered - skippingand returns without registering; the first registration is kept intact.registerExtensionreturns whether it registered, andextensionService.registerExtensionreturns early onfalseso a duplicate does not re-run the downstream registration side effects (keybindings, commands, menu commands, settings, bottom-panel tabs, custom widgets, auth hooks).namethrow is unchanged.Maprather than a plain object, so a name matching anObject.prototypekey is no longer misread.constructor/toStringpreviously read back truthy and were falsely skipped as duplicates, and__proto__was silently dropped on assignment whileregisterExtensionreported success — which matters now that the return value gates the downstream side effects.isExtensionInstalledis a one-line.has()over thatMapand is the single definition of "installed" behind all three call sites. Incidentally this also fixes ordering:Object.valueshoisted integer-like keys, so an extension named"2"used to jump the list. From review rounds 1–2.browser_tests/fixtures/customNode/consoleErrorLedger.ts).maingained that file in test: custom-node E2E regression suite - Core depth and Cloud breadth #15225 after this branch was cut; itsComfyUI_LayerStyle_Advance/duplicate-color-overlayrule carriesrequiredStartupId, which inverts the allowlist contract —staleRequiredStartupErrorRulesForPacksreports a rule whose pattern is not observed, andcustomNode.regression.spec.ts:99asserts that list is empty. The pattern matched this PR's throw, which no longer fires, so the rule would be permanently stale. Removing it is the ledger's documented lifecycle (its ownrestoresays to) and it tightens the suite rather than loosening it: that pack now has no console allowance at all.Review Focus
extensionServiceearly return is the load-bearing half, not scope creep. Removing the throw in the store alone would be a behavior change downstream: the old throw abortedextensionService.registerExtensionon its first line, so none of the keybinding/command/menu/setting/panel/widget registration ran for a duplicate. Without the guard, a duplicate would newly append a second bottom-panel tab, re-add default keybindings (existOk: false→ throws → error toast), and re-run menu/widget registration. The guard keeps the downstream behavior byte-for-byte identical to the pre-change path; the only thing that changes is that the caller's module evaluation is no longer aborted.src/services/extensionService.test.tscovers this and fails (2 tabs instead of 1) with the guard removed.settingStore/commandStoreand the pre-existing "first registration is the live one" semantics.useNodeBadge) simply get the warn + no-op.Notes
Provenance
Authored by: agent-work loop
Verified: Head
d9a57831, which mergesmainat1e16aa9dinto the four-file diff plus the console-ledger deletion. The branch is 1 commit behindmain—296fc5cd, a website-only test change with no import path to anything here — so the tested tree is the merged tree in every respect that touches this diff; the merge was textually clean andmaintouched none ofextensionStore.ts/extensionService.ts/ their tests /browser_tests/fixtures/customNode/consoleErrorLedger.ts/browser_tests/tests/customNodes/in that 19-commit range. No merge-queue (event=merge_group) run has ever existed for this PR, so there is no merged-result-only failure outstanding.The one thing
maindid land that acts on this branch is #15417,ci-check-ai-co-authors.yaml, which fails any PR whosebase..headcommits carry an AI-agentCo-authored-bytrailer. The tip commit carried one. Becausemainis squash-merge only and squash composes the message from every commit, that trailer would have landed inmain's history — the precise failure mode #15417 was built to stop. It was stripped by amending the tip; the tree is byte-identical (c3c42067before and after), so the code diff is unchanged and only the commit message moved. That required the one force-push on this branch, which carries no commits but this loop's. The repo's own checker script now reports no violations overorigin/main..HEAD.On the merged tree, not the branch alone: full
pnpm test:unitis 16,562 passed / 7 expected-fail / 13 skipped, with the only failing file beingscripts/cicd/check-binary-size.test.ts(12 cases) — a subprocess-spawning script test that this PR does not touch, that has no import path to the changed modules, and that is green in CI.pnpm typecheckclean,pnpm lint0 errors (3 pre-existingno-restricted-syntaxwarnings, all in filesmainbrought in),pnpm format:checkclean across 4,801 files. Call sites re-checked on the merged tree:useNodeBadgeis still the only caller that bypasses the service,app.registerExtensionstill returnsvoid, and no caller anywhere catches the removed exception.Earlier evidence that still stands, since neither the tree nor the mechanism changed: the console-ledger removal was proven by a dispatched run of the nightly-only custom-node suite against this branch (run 32559588829) — all six shards plus
custom-nodes-e2e-statusgreen, with shard 5/5 installing bothColorOverlay-colliding packs and passingcustomNode.regression.spec.ts:99(18 passed / 0 failed). That assertion is bidirectional: it passing with no allowlist rule for the pack proves no duplicate-registration error is emitted, which is exactly what makes the retained rule stale, and it also coversdz_node_palette.jsnow evaluating past the former throw without emitting an unallowlisted console error.Deviations: Four. (1)
extensionStore.test.tscarrieslists extensions in registration order, because the registration-order fix claimed under Changes had no coverage; it is a regression guard rather than a change detector — the previous object-keyed registry yields["2","z.ext","a.ext"]for those inputs, so it fails against the old implementation. (2) The diff is five files rather than four: the console-ledger deletion touchesbrowser_tests/, which nothing else in this PR does. It is a consequence of the fix, not scope creep, and it removes an assertion that this PR makes unsatisfiable rather than one it merely finds inconvenient. (3) The tip commit's message was rewritten to strip an AI co-author trailer (see Verified); no code changed with it. (4)extensionStore.test.tsnow assertsregisterExtensionreturnstruefor a fresh registration, from CodeRabbit's round-3 comment — thefalsehalf was covered but thetruehalf, which is what gates every downstream side effect inextensionService, was not.codecov/projectwas red on every previous push and is green on this head, along with every other check — 65 pass, 13 skipped, 0 fail. Worth being precise about why rather than claiming vindication: the upload asymmetry the description has argued about since round 1 has not gone away. Codecov's compare API for this head still reports base 4 upload sessions / 2218 files against head 2 sessions / 1888, exactly the shape that produced the earlier red. What is different is the coverage delta itself — head 81.87% against base 79.39% — which now clears the status threshold. So the earlier diagnosis holds (it was never a coverage regression, andcodecov/patchhas been green at 100% of the diff throughout), but the check clearing is a property of that margin rather than of the upload counts becoming comparable. It could go red again on a base whose sessions land differently, and it is not a required check either way.