Remove dead code from SerializedScriptValue, WebSocket, Performance, JSDOMConvert*, rescle, wasi - #36474
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…JSDOMConvert*, rescle, wasi
SerializedScriptValue.cpp/.h (-2360 LOC): delete all #if ENABLE(WEB_RTC),
ENABLE(WEB_CODECS), ENABLE(OFFSCREEN_CANVAS_IN_WORKERS),
ENABLE(PREDEFINED_COLOR_SPACE_DISPLAY_P3) blocks (all =0 in Bun's JSCOnly
cmakeconfig.h; the guarded types have no headers under src/). Delete ~1200
lines of long-commented-out DOM geometry / ImageBitmap / File / Blob /
ImageData serialization paths. Delete uncalled public methods
create(StringView), create(JSContextRef,...), deserialize(JSContextRef,...),
toString(), nullValue(), wireFormatVersion(), encode<>/decode<>() and their
private-only helpers (CloneSerializer::serialize(StringView,...),
CloneDeserializer::deserializeString, blobFilePathForBlobURL, wrapCryptoKey,
unwrapCryptoKey, write/read(DestinationColorSpaceTag), PLATFORM(COCOA)
CFDataRef helpers). Delete orphaned enums PredefinedColorSpaceTag,
DestinationColorSpaceTag, ImageDataPoolTag and 18 never-written
SerializationTag values.
WebSocket.cpp/.h (-212 LOC): delete uncalled create/connect overloads,
didUpdateBufferedAmount, offerPerMessageDeflate getter, and 2022-era
commented-out CSP / MixedContentChecker / suspend/resume /
INTELLIGENT_TRACKING_PREVENTION / ConnectedWebSocketKind::Server blocks.
Remove the now-orphaned m_dispatchedErrorEvent field.
JSDOMConvert*.h/.cpp (-381 LOC): delete NumericSequenceConverter and the five
SequenceConverter<IDL{Long,Float,UnrestrictedFloat,Double,UnrestrictedDouble}>
specializations (IDLSequence<T> is only instantiated with
string/enum/interface/dictionary element types in Bun). Delete
Converter<IDLFrozenArray<T>>, JSConverter<IDLRecord<K,V>>,
IDLAllowSharedAdaptor<IDLUnion<...>> specs, propertyNameTo{,Atom}String,
the IDLLegacyNullToEmpty{,Atom}StringAdaptor and
IDLAtomStringAdaptor<IDL{USV,Byte}String> converters, and
valueTo{Byte,USV}AtomString.
windows/rescle.cpp/.h (-278 LOC): rescle__setWindowsMetadata uses only Load,
SetIcon, SetVersionString, SetFileVersion, SetProductVersion, Commit. Delete
SetExecutionLevel/IsExecutionLevelSet/SetApplicationManifest/
IsApplicationManifestSet, GetVersionString, ChangeString, ChangeRcData,
GetString, OnEnumResourceManifest and its Load() registration, the now
always-empty execution-level/manifest branches in Commit(), ReadFileToString,
and five unused RU_VS_* macros.
Performance.cpp/.h (-150 LOC): delete uncalled addResourceTiming and its
private-only isResourceTimingBufferFull/m_backupResourceTimingBuffer/
m_waitingForBackupBufferToBeProcessed, allowHighPrecisionTime/
highTimePrecision, timeResolution,
relativeTimeFromTimeOriginInReducedResolution, and the long-commented-out
navigation()/addNavigationTiming()/resourceTimingBufferFullTimerFired blocks.
PerformanceObserver.h: delete hasNavigationTiming/addedNavigationTiming/
m_hasNavigationTiming (only referenced by the above commented-out code).
EventTarget.cpp/.h + EventListenerMap (-51 LOC): delete isPaymentRequest()
(no callers, no overriders), hasCapturingEventListeners and its only caller
EventListenerMap::containsCapturing, the decl-only invalidateJSEventListeners,
and the legacyType() static + its fallback block in fireEventListeners
(legacyType unconditionally returned nullAtom() since 2022).
AbortSignal.cpp/.h + JSAbortSignalCustom.cpp (-29 LOC): delete signalFollow
(no callers). It was the only writer of m_followingSignal, so also delete
m_followingSignal, isFollowingSignal(), and its always-false check in
JSAbortSignalOwner::isReachableFromOpaqueRoots.
wasi.ts (-280 LOC): delete the four exports.X = ... = void 0 pre-declaration
chains (tsc emit artifact from the wasi-js bundle; every property is
re-assigned immediately after). Delete WASIExitError/WASIKillError classes,
exports.SOCKET_DEFAULT_RIGHTS, initWasiFdInfo() (unreferenced, contains debug
console.log), and the if(log.enabled){...} blocks (log is hard-coded to
() => {}).
ws.js: delete the long-commented-out secWebSocketExtensions /
PerMessageDeflate block (May 2023).
Rust: delete bun_http's PRINT_EVERY/PRINT_EVERY_I debug scaffolding and its
always-false block; drop the unused GuardedBy/RawMutex/RwLockReadGuard/
RwLockWriteGuard re-exports from bun_threading (the backing types stay);
delete standalone_graph::Error::UnsupportedTarget (never constructed);
delete the unused bunfig::OfflineMode re-export.
Verified: bun bd, bun run rust:check-all (all 10 targets), and smoke tests
for structured-clone, worker_threads, websocket-client, abort,
performance-entries, wasi, event-target all pass.
WalkthroughChangesThe pull request removes unused APIs and instrumentation across Rust, WASI, WebCore, WebSocket, Windows resource editing, and structured cloning. It also updates HTTP receive pausing, numeric IDL conversion, performance observer plumbing, and dead-symbol source linting. API and runtime consolidation
Possibly related PRs
🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
Comment |
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Source-lint test: three WebSocket.h regexes did not match the pre-PR signatures (didReceiveData takes named params; connect returns ExceptionOr<void>), so they were vacuous. Fixed to match the actual removed declarations; verified all 71 checks now match main and none match this branch. Finish the one-hop cascade for code this PR made dead: - Event.h: delete setType() (only callers were the removed legacyType fallback in fireEventListeners). - Performance.cpp: make timePrecision constexpr (only writer allowHighPrecisionTime() was removed); delete two commented-out hasNavigationTiming/addedNavigationTiming blocks that now referenced methods removed from PerformanceObserver.h; drop the now-unused PerformanceObserver& param from appendBufferedEntriesByType and update its one caller. - rescle.cpp: drop <assert.h>, <fstream>, <codecvt>, <algorithm> includes whose only consumers were the removed ReadFileToString / ChangeString / GetString / ChangeRcData / manifest branches.
…TimingBufferFull removal m_resourceTimingBufferSize and m_resourceTimingBufferFullFlag became write-only once their sole readers were removed; drop the fields and their dead stores in clearResourceTimings/setResourceTimingBufferSize. Drop the ResourceTiming/ResourceResponse/PerformancePaintTiming forward-decls and the commented-out includes and member decls that were their only remaining references.
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Actionable comments posted: 1
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⚠️ Outside diff range comments (4)
src/jsc/bindings/webcore/SerializedScriptValue.cpp (3)
2340-2362: 🩺 Stability & Availability | 🟠 Major | ⚡ Quick win
m_sharedBuffersis left uninitialized by this constructor.
m_sharedBuffers(declared at Line 3941 without an initializer) is only assigned in the longer constructor. Instances created through this overload — e.g. the crypto-keyrawKeyDeserializerat Line 3888 — carry an indeterminate pointer, andreadTerminal'sSharedArrayBufferTagbranch tests!m_sharedBuffersbefore dereferencing it. Not reachable throughreadCryptoKeytoday, but it is UB waiting on the next caller.Same for
m_blobURLs/m_blobFilePathsbeing default-constructed here, which is fine, but the raw pointer needs an explicit default.🛡️ Proposed fix
- ArrayBufferContentsArray* m_sharedBuffers; + ArrayBufferContentsArray* m_sharedBuffers { nullptr };🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@src/jsc/bindings/webcore/SerializedScriptValue.cpp` around lines 2340 - 2362, Initialize m_sharedBuffers to nullptr in the shown CloneDeserializer constructor’s initializer list, matching the default state expected by readTerminal’s SharedArrayBufferTag handling. Leave m_blobURLs and m_blobFilePaths unchanged.
183-200: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low valueTag numbering preserved for retained tags — wire compatibility is intact.
Nit: the serialization grammar comment further down still documents removed terminals (
DOMPoint/DOMRect/DOMMatrix/DOMQuad,ImageBitmapTag,OffscreenCanvasTransferTag,RTCDataChannelTransferTag,WebCodecsEncodedVideoChunkTag,DestinationColorSpace,File/FileList/ImageData/Blob) whose tags and read/write paths no longer exist. Worth trimming in the same pass so the grammar stays a usable reference.🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@src/jsc/bindings/webcore/SerializedScriptValue.cpp` around lines 183 - 200, Update the serialization grammar comment associated with the tag definitions to remove entries for deleted terminals, including DOM geometry types, ImageBitmap, OffscreenCanvas, RTCDataChannel, WebCodecsEncodedVideoChunk, DestinationColorSpace, File/FileList/ImageData, and Blob. Keep the grammar aligned only with the retained tags and existing read/write paths, including the current Bun-specific tags.
3886-3893: 🩺 Stability & Availability | 🟡 Minor | ⚡ Quick winTemporary
{}bound to theconst Vector<RefPtr<MessagePort>>&member outlives its lifetime.
m_messagePortsis a reference member; the{}argument materializes a temporary that dies at the end of this declaration statement, sorawKeyDeserializerholds a dangling reference for the subsequentreadCryptoKeycall. Harmless only becausereadCryptoKeynever touches message ports. Hoist a named empty vector to make it safe.🛡️ Proposed fix
JSValue cryptoKey; - CloneDeserializer rawKeyDeserializer(m_lexicalGlobalObject, m_globalObject, {}, nullptr, serializedKey); + Vector<RefPtr<MessagePort>> noMessagePorts; + CloneDeserializer rawKeyDeserializer(m_lexicalGlobalObject, m_globalObject, noMessagePorts, nullptr, serializedKey);🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@src/jsc/bindings/webcore/SerializedScriptValue.cpp` around lines 3886 - 3893, In the deserialization block around CloneDeserializer, replace the temporary {} message-port argument with a named empty Vector<RefPtr<MessagePort>> whose lifetime covers rawKeyDeserializer and its readCryptoKey call. Pass that named vector to the constructor while preserving the existing crypto-key handling.src/js/node/wasi.ts (1)
658-686: 🎯 Functional Correctness | 🟡 Minor | ⚡ Quick winRemove the unconditional debug logging from
getiovs.Malformed guest iovecs now write debug objects to host stdout in both branches. Keep the clamping behavior, but remove these
console.logcalls to avoid introducing noisy observable output.🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@src/js/node/wasi.ts` around lines 658 - 686, Remove the unconditional console.log debug-object calls from both malformed-buffer branches in getiovs, while preserving the existing bufLen clamping behavior and error handling.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@test/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.ts`:
- Around line 89-90: Add header-file checks to the dead-symbol test for every
removed AbortSignal and ResourceUpdater declaration, alongside the existing .cpp
definition patterns. Cover the relevant retained API variants identified by
rescle.h so reintroduced declarations in AbortSignal.h or rescle.h cause the
test to fail.
---
Outside diff comments:
In `@src/js/node/wasi.ts`:
- Around line 658-686: Remove the unconditional console.log debug-object calls
from both malformed-buffer branches in getiovs, while preserving the existing
bufLen clamping behavior and error handling.
In `@src/jsc/bindings/webcore/SerializedScriptValue.cpp`:
- Around line 2340-2362: Initialize m_sharedBuffers to nullptr in the shown
CloneDeserializer constructor’s initializer list, matching the default state
expected by readTerminal’s SharedArrayBufferTag handling. Leave m_blobURLs and
m_blobFilePaths unchanged.
- Around line 183-200: Update the serialization grammar comment associated with
the tag definitions to remove entries for deleted terminals, including DOM
geometry types, ImageBitmap, OffscreenCanvas, RTCDataChannel,
WebCodecsEncodedVideoChunk, DestinationColorSpace, File/FileList/ImageData, and
Blob. Keep the grammar aligned only with the retained tags and existing
read/write paths, including the current Bun-specific tags.
- Around line 3886-3893: In the deserialization block around CloneDeserializer,
replace the temporary {} message-port argument with a named empty
Vector<RefPtr<MessagePort>> whose lifetime covers rawKeyDeserializer and its
readCryptoKey call. Pass that named vector to the constructor while preserving
the existing crypto-key handling.
🪄 Autofix (Beta)
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: Path: .coderabbit.yaml
Review profile: ASSERTIVE
Plan: Pro
Run ID: a3c7ff54-3e4c-4206-a26f-1066def8cd52
📒 Files selected for processing (31)
src/bunfig/bunfig.rssrc/http/lib.rssrc/js/node/wasi.tssrc/js/thirdparty/ws.jssrc/jsc/bindings/webcore/AbortSignal.cppsrc/jsc/bindings/webcore/AbortSignal.hsrc/jsc/bindings/webcore/Event.hsrc/jsc/bindings/webcore/EventListenerMap.cppsrc/jsc/bindings/webcore/EventListenerMap.hsrc/jsc/bindings/webcore/EventTarget.cppsrc/jsc/bindings/webcore/EventTarget.hsrc/jsc/bindings/webcore/JSAbortSignalCustom.cppsrc/jsc/bindings/webcore/JSDOMConvertRecord.hsrc/jsc/bindings/webcore/JSDOMConvertSequences.hsrc/jsc/bindings/webcore/JSDOMConvertStrings.cppsrc/jsc/bindings/webcore/JSDOMConvertStrings.hsrc/jsc/bindings/webcore/JSDOMConvertUnion.hsrc/jsc/bindings/webcore/Performance.cppsrc/jsc/bindings/webcore/Performance.hsrc/jsc/bindings/webcore/PerformanceObserver.cppsrc/jsc/bindings/webcore/PerformanceObserver.hsrc/jsc/bindings/webcore/SerializedScriptValue.cppsrc/jsc/bindings/webcore/SerializedScriptValue.hsrc/jsc/bindings/webcore/WebSocket.cppsrc/jsc/bindings/webcore/WebSocket.hsrc/jsc/bindings/windows/rescle.cppsrc/jsc/bindings/windows/rescle.hsrc/standalone_graph/StandaloneModuleGraph.rssrc/standalone_graph/error.rssrc/threading/lib.rstest/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.ts
💤 Files with no reviewable changes (22)
- src/bunfig/bunfig.rs
- src/jsc/bindings/webcore/EventListenerMap.h
- src/js/thirdparty/ws.js
- src/jsc/bindings/webcore/EventListenerMap.cpp
- src/jsc/bindings/webcore/JSAbortSignalCustom.cpp
- src/jsc/bindings/webcore/Event.h
- src/jsc/bindings/webcore/PerformanceObserver.h
- src/jsc/bindings/webcore/JSDOMConvertRecord.h
- src/jsc/bindings/webcore/JSDOMConvertUnion.h
- src/standalone_graph/error.rs
- src/jsc/bindings/webcore/JSDOMConvertStrings.cpp
- src/jsc/bindings/webcore/AbortSignal.h
- src/standalone_graph/StandaloneModuleGraph.rs
- src/jsc/bindings/webcore/AbortSignal.cpp
- src/jsc/bindings/windows/rescle.h
- src/http/lib.rs
- src/jsc/bindings/webcore/WebSocket.h
- src/jsc/bindings/webcore/EventTarget.h
- src/jsc/bindings/webcore/JSDOMConvertStrings.h
- src/jsc/bindings/webcore/WebSocket.cpp
- src/jsc/bindings/windows/rescle.cpp
- src/jsc/bindings/webcore/JSDOMConvertSequences.h
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All three rounds of prior feedback (vacuous test regexes; timePrecision/Event::setType/rescle-includes cascade; Performance.h cascade) are addressed in ae21882 and bfd38c6, and this pass found nothing new. Deferring to a human because of scale: -3.8k LOC across 31 files, including SerializedScriptValue (structuredClone/postMessage wire format), JSAbortSignalOwner::isReachableFromOpaqueRoots (GC reachability), EventTarget::fireEventListeners, and JSDOMConvert* template specializations — worth a human skim to confirm nothing load-bearing was swept up.
What was reviewed: verified legacyType() returned nullAtom() unconditionally so the removed fireEventListeners fallback was unreachable; confirmed signalFollow was the sole writer of m_followingSignal so the removed isFollowingSignal() GC-root check was always false; confirmed setResourceTimingBufferSize becoming a no-op is behavior-preserving (its stored value had no remaining reader); confirmed the removed SerializationTag enum values leave gaps rather than renumbering, so wire-format compatibility is preserved.
Extended reasoning...
Overview
Net -3.8k LOC dead-code sweep across 31 files. The bulk is SerializedScriptValue.cpp/.h (~2.3k lines): always-off #if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS|WEB_RTC|WEB_CODECS) blocks, ~1.2k lines of 2022-era commented-out DOM-geometry/Blob/ImageData serialization, and uncalled public methods (nullValue, toString, wireFormatVersion, encode/decode<T>, create(StringView), the JSContextRef overloads). The rest: WebSocket unused overloads and commented-out WebKit blocks, Performance/PerformanceObserver unreferenced buffer machinery, EventTarget unreachable legacy-type fallback, AbortSignal::signalFollow and its GC-reachability check, JSDOMConvert* numeric-sequence and string-adaptor template specializations, unused rescle.cpp resource-editing methods, wasi.ts tsc emit artifacts and dead debug scaffolding, ws.js commented-out block, and four small Rust items. A source-lint test guards against reintroduction.
I reviewed this PR across three prior iterations: (1) three vacuous regex patterns in the source-lint test that didn't match the pre-PR source; (2) four one-hop cascade orphans (timePrecision mutability, Event::setType, rescle #includes, commented-out hasNavigationTiming blocks); (3) three more Performance.h cascade orphans (ResourceTiming forward-decl, m_resourceTimingBufferSize, m_resourceTimingBufferFullFlag). All were fixed in ae21882 and bfd38c6. This pass found nothing new.
Security risks
None identified. Pure deletions of unreferenced code, commented-out blocks, and always-off #if branches. No new input-handling paths, no auth/crypto/permission surface touched. The removed wrapCryptoKey/unwrapCryptoKey helpers were already dead (the live path skips wrapping per the existing comment). The JSAbortSignalOwner::isReachableFromOpaqueRoots change removes a check that was provably always false (m_followingSignal had no writer), so GC behavior is unchanged.
Level of scrutiny
High — this is why I'm deferring rather than approving. The touched files are load-bearing runtime paths: SerializedScriptValue backs structuredClone/postMessage/worker_threads transfer; EventTarget::fireEventListeners is the DOM event dispatch hot path; isReachableFromOpaqueRoots is GC-safety code; the JSDOMConvert* headers are template specializations whose "used-ness" depends on instantiation across all generated bindings. The build passing on all 10 targets plus the smoke-test suite (structured-clone, worker_threads, websocket-client, abort, performance-entries, wasi) is strong evidence, but a -3.8k sweep of this breadth deserves a human pass — particularly the SerializedScriptValue tag-enum deletions (verified they leave gaps, not renumber) and the JSDOMConvert specializations (verified via build, but a maintainer familiar with which IDL types Bun's codegen emits should confirm).
Other factors
- The PR description is detailed and names every deletion with its verification method (
rgacrosssrc/+build/debug/codegen/,bun bd,rust:check-allon 10 targets, 8 smoke-test files). - The author was responsive across three review rounds and applied the cascade principle beyond what I asked (e.g. also removed sibling
ResourceResponse/PerformancePaintTimingforward-decls in bfd38c6, ran a one-off verifier confirming all 71 lint patterns matchmainand none match this branch). - The new source-lint test follows the existing
test/internal/source-lints/pattern and each check was verified non-vacuous after ae21882. - No overlap with the 11 other open dead-code PRs listed in the description.
Add header-file checks alongside the .cpp checks so a reintroduced declaration (without the definition) still trips the lint.
|
On the out-of-diff review items:
Header-side lint checks added in ba206e3. |
…enceConverter/LegacyNullToEmpty removal
The five Converter<IDL{Long,Float,UnrestrictedFloat,Double,UnrestrictedDouble}>
convert(JSGlobalObject&, ThrowScope&, double) overloads existed only for the
removed NumericSequenceConverter::convertArray (the removed FIXME above it
documented that contract); the sibling convert(JSGlobalObject&, JSValue)
overloads inline their own logic. IDLLegacyNullToEmpty{,Atom}StringAdaptor
type tags in IDLTypes.h had no remaining references after their
Converter<>/JSConverter<> specializations were removed from
JSDOMConvertStrings.h.
|
@robobun lets keep the AbortSignal one we're gonna need that soon |
Per review, this will be needed soon. Reverts the AbortSignal.cpp/.h and JSAbortSignalCustom.cpp changes and drops the corresponding source-lint checks.
|
Restored in 63bfbb2: |
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Additional findings (outside current diff — PR may have been updated during review):
-
🔴
Cargo.lock:289-297— Commit 63bfbb2 (the AbortSignal restore) accidentally included a 19-line Cargo.lock deletion, dropping declared dependencies from thebun_brotliandbun_safetylockfile entries even though neither crate'sCargo.tomlis touched by this PR — both manifests still declare all of them at HEAD. The lockfile is now inconsistent with the workspace:cargo build --lockedwill fail with "the lock file needs to be updated", and without--lockedthe next cargo invocation will silently regenerate it and undo this hunk. Please revert the Cargo.lock changes from 63bfbb2 (git checkout c08f6653 -- Cargo.lock).Extended reasoning...
What happened
Commit 63bfbb2 ("Restore AbortSignal::signalFollow and m_followingSignal") was pushed in response to Jarred's review comment asking to keep the AbortSignal removal. Its commit message and stat show it was intended as a C++-only revert:
Cargo.lock | 19 ------------------- src/jsc/bindings/webcore/AbortSignal.cpp | 19 +++++++++++++++++++ src/jsc/bindings/webcore/AbortSignal.h | 4 ++++ src/jsc/bindings/webcore/JSAbortSignalCustom.cpp | 6 ++++++ .../dead-symbols-ssv-wasi-webcore.test.ts | 9 ++-------The Cargo.lock hunk removes dependencies from two workspace crate entries:
bun_brotli: dropsbitflags,bstr,bun_io,const_format,enum-map,enumset,libc,scopeguard,strum(keeps onlybun_alloc,bun_brotli_sys,bun_core,thiserror)bun_safety: dropsbitflags,bstr,bun_alloc,const_format,enum-map,enumset,libc,scopeguard,strum,thiserror(keeps onlybun_core)
Why this is a desync, not an intentional prune
Cargo.lock records the dependencies declared in each workspace member's
Cargo.toml— it does not prune unused deps. For the lockfile to legitimately drop these entries, the correspondingCargo.tomlfiles would have to change. But:- Neither manifest is in this PR's changed-files list.
git diff c08f6653..HEAD --name-only -- 'src/**/Cargo.toml' Cargo.tomlreturns nothing. - Both manifests at HEAD still declare every dropped dep.
src/brotli/Cargo.tomlunconditionally declares all 13 deps (bitflags, bstr, bun_io, const_format, enum-map, enumset, libc, scopeguard, strum, thiserror, bun_alloc, bun_core, bun_brotli_sys).src/safety/Cargo.tomldeclares all 11. None are feature-gated orcfg-conditional. - This PR's intentional Rust changes don't touch dependency graphs. Per the PR description's Rust section, the only Rust edits are re-export removals in
src/threading/lib.rs,src/bunfig/bunfig.rs,src/http/lib.rs, and an enum variant insrc/standalone_graph/error.rs. None of those crates arebun_brotliorbun_safety, and none add or remove a[dependencies]entry.
Step-by-step proof of the failure
- At the merge-base c08f665,
Cargo.locklistsbun_brotliwith 13 deps andbun_safetywith 11 deps, matching their manifests. - After 63bfbb2,
Cargo.locklistsbun_brotliwith 4 deps andbun_safetywith 1 dep. src/brotli/Cargo.tomlat HEAD still saysbitflags.workspace = true(line 21),strum.workspace = true(line 14), etc. — all unconditional.- When Cargo resolves the workspace, it reads
src/brotli/Cargo.toml, seesbitflagsdeclared, and finds thebun_brotlientry inCargo.lockdoes not list it. - With
--locked: Cargo refuses to update the lockfile and errors with "the lock file /workspace/bun/Cargo.lock needs to be updated but --locked was passed to prevent this". - Without
--locked: Cargo silently rewrites thebun_brotliandbun_safetyentries back to the full dependency list — undoing this hunk and leaving a dirty working tree for the next contributor.
Why the PR's own verification didn't catch this
The evidence block's
rust:check-alland release-build verification were both run at commit 071f23d (visible in the console output headerbun test v1.4.0 (071f23d7f)), which is the commit before 63bfbb2. The Cargo.lock desync was introduced in the very last commit and was never verified.Impact and fix
Either
--lockedCI builds fail on this branch/after merge, or (if the build doesn't pass--locked) the lockfile silently regenerates on the nextcargoinvocation and this hunk becomes 19 lines of merge-conflict noise for whoever touches Cargo.lock next. Either way it is an accidental, unrelated change riding on a dead-code sweep PR.Fix:
git checkout c08f6653 -- Cargo.lock(or drop Cargo.lock from the diff entirely — nothing in this PR should change it).
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CI status: the diff itself is green. Two full CI runs (builds #86289 and #86351) each failed only on tests unrelated to this diff, all tagged flaky by
None of those tests touch any file in this diff (SerializedScriptValue, WebSocket, Performance, EventTarget, JSDOMConvert*, rescle, wasi.ts, ws.js, http/threading/standalone_graph/bunfig Rust). Locally, Ready for a maintainer to merge. |
…n_jsc Rust (#36576) Net **-1185 lines** (+68 / -1253) across 24 files. Every removed item was verified to have zero references across `src/` and `build/debug/codegen/`, then confirmed by a full `bun bd` build and `bun run rust:check-all`. No overlap with the 11 open dead-code PRs (checked file lists of #34965 #34759 #36474 #36178 #36237 #35559 #35775 #36318 #36115 #35437 #35880). ### Whole-file deletions (C++, 1107 lines) | File | LOC | Verification | |---|---|---| | `src/jsc/bindings/node/http/llhttp/api.h` | 357 | Never `#include`d. Vendored upstream copy artifact; all 41 `LLHTTP_EXPORT` decls are duplicated verbatim in `llhttp.h`, and `api.c` includes `llhttp.h` not `api.h`. Only mentioned in `llhttp/README.md`. | | `src/jsc/bindings/webcore/JSDOMConvertWebGL.{h,cpp}` | 317 | Entire body guarded by `#if ENABLE(WEBGL)`. The .cpp `#include`s ~40 headers (`JSANGLEInstancedArrays.h` etc.) that don't exist in the repo, so the guard is provably inactive on every bun target. `IDLWebGLAny`/`IDLWebGLExtension` used nowhere else. | | `src/jsc/bindings/headers-cpp.h` | 190 | Only includer is `headergen/sizegen.cpp`, which isn't in any build rule. File itself has syntax errors (line 166 `#include ""ConsoleObject.h""`, lines 172-182 `#include ""`), so it cannot be compiling anywhere. | | `src/jsc/bindings/webcore/HTTPHeaderValues.{h,cpp}` | 108 | Header only included by its own .cpp; none of the five declared functions (`textPlainContentType`, `formURLEncodedContentType`, `applicationJSONContentType`, `noCache`, `maxAge0`) are called anywhere. | | `src/jsc/bindings/webcore/JSDOMConvertJSON.h` | 51 | Sole includer is the umbrella `JSDOMConvert.h`. `IDLJSON` is referenced nowhere outside `IDLTypes.h` (type decl) and this file. | | `src/jsc/bindings/ares_build.h` | 42 | Zero `#include`s anywhere under `src/`. Superseded by the generated `build/<profile>/deps/cares/ares_build.h` emitted by `scripts/build/deps/cares.ts`. | | `src/jsc/bindings/webcore/TaskSource.h` | 29 | Never `#include`d. Only referenced in commented-out code in `WebSocket.cpp` / `JSDOMPromiseDeferred.cpp`. | | `src/jsc/bindings/JSVMClientDataClient.h` | 13 | See `BunClientData` below. | ### C++ symbol removals - **`helpers.h`** (38 lines): `Zig::toAtomString(ZigString)`, `toStringNotConst`, `__dot_char`/`ZigStringCwd`/`BunStringCwd`, `toZigString(WTF::String*)`, `toZigString(JSC::Identifier&)` + `(JSC::Identifier*)`, `Zig::toStringView(ZigString)`. rg across src/ and codegen shows zero callers for each. - **`headers-handwritten.h`** (22 lines): `WritableEvent` typedef + 8 consts, `ReadableEvent` typedef + 9 consts. Zero references anywhere. - **`JSDOMWrapper.h`** (8 lines): `JSTextNodeType`, `JSProcessingInstructionNodeType`, `JSDocumentTypeNodeType`, `JSDocumentFragmentNodeType`, `JSDocumentWrapperType`, `JSCommentNodeType`, `JSCDATASectionNodeType`, `JSAttrNodeType`. Only referenced in commented-out code at `webcore/DOMJITHelpers.h:163-178`. (`JSNodeType`/`JSNodeTypeMask`/`JSElementType`/`JSAsJSONType` kept.) - **`BunClientData.{h,cpp}`** (9 lines): `addClient()` is never called, so `m_clients` is always empty and the `~JSVMClientData` `forEach`/`clear` loop is a no-op. Removed `addClient`, `m_clients`, the dtor loop, and the include of `JSVMClientDataClient.h`. - **`JSDOMConvert.h`** (2 lines): removed `#include` of the two deleted headers. - **`headergen/sizegen.cpp`** (2 lines): removed `#include "headers-cpp.h"`. The file is not in any build rule and was already uncompilable (its loop references `names[]`/`sizes[]`/`aligns[]`, none of which were ever fully defined); leaving the loop untouched to minimise conflict with #36115.. ### Rust removals - **`bun_core::String::github_action` + `StringGithubActionFormatter`** (22 lines): all four `.github_action()` call sites in `VirtualMachine.rs` are on `jsc::ZigString`, not `bun_core::String`. The `ZigString` variant is kept. - **`bun_jsc::JSUint8Array::ptr()` + `sizes::BUN_FFI_POINTER_OFFSET_TO_TYPED_ARRAY_VECTOR`** (14 lines): zero callers. - **`bun_jsc::RefString::to_js()`** (9 lines): the sole external `RefString` user (`filesystem_router.rs`) never calls `.to_js()`. Removed along with now-unused `JSGlobalObject`/`JSValue`/`JsResult`/`StringJsc` imports. - **`bun_jsc::Errorable::value()`** (7 lines): identical body to `Errorable::ok()`; every caller uses `ok()`. ### Verification - `bun bd` passes - `bun run rust:check-all` passes on all targets - `bun bd test test/internal/source-lints/` passes (62 tests) - `bun bd test test/js/node/inspector/` passes (67 tests; exercises `BunDebugger.cpp`) - `bun bd test test/cli/install/bun-install-lifecycle-scripts.test.ts` passes (3 pre-existing env failures unrelated to this diff, reproduced on main) ### Followups (not in this diff) - `src/jsc/bindings/CachedScript.h` is semantically vestigial (empty class, all callers pass `nullptr`) but removing it requires editing signatures in `ScriptExecutionContext.h` / `JSDOMExceptionHandling.{h,cpp}`. - `src/ast/lib.rs` `StringBuilder` stub + the `count()` method chain is a no-op cluster but removing it requires dropping the `&mut StringBuilder` parameter from three `clone_with_builder` signatures. - `src/runtime/api/bun/h2/connection.rs` `send_header_block`/`send_push_promise`/`send_data`/`encode_header`/`begin_header_block` (~173 LOC) are only called from `#[cfg(test)]`; intentionally staged per the `h2/mod.rs` module doc for a future rewrite, so left alone. <!-- robobun:evidence:begin --> --- **[review]** gate passed · iteration 2 · 24 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 2 FAILED $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/mechgate.xml" test/internal/source-lints/dead-symbols-llhttp-helpers-install.test.ts bun test v1.4.0 (6057ada) test/internal/source-lints/dead-symbols-llhttp-helpers-install.test.ts: 50 | ["src/jsc/bindings/webcore/JSDOMConvert.h", /JSDOMConvertWebGL\.h/], 51 | ["src/jsc/bindings/IDLTypes.h", /\bIDLJSON\b/], 52 | ["src/jsc/headergen/sizegen.cpp", /headers-cpp\.h/], 53 | ]; 54 | const resurrected = checks.filter(([file, re]) => re.test(src(file))).map(([file, re]) => `${file}: ${re.source}`); 55 | expect(resurrected).toEqual([]); ^ error: expect(received).toEqual(expected) - [] + [ + "src/jsc/bindings/helpers.h: static WTF::AtomString toAtomString\(ZigString", + "src/jsc/bindings/helpers.h: \btoStringNotConst\b", + "src/jsc/bindings/helpers.h: \b__dot_char\b", + "src/jsc/bindings/helpers.h: \bZigStringCwd\b", + "src/jsc/bindings/helpers.h: \bBunStringCwd\b", + "src/jsc/bindings/helpers.h: toZigString\(WTF::String\*", + "src/jsc/bindings/helpers.h: toZigString\(JSC::Identifier&", + "src/ ... (truncated) release without fix: 2 FAILED bun test v1.4.0-canary.1 (91f57fe) test/internal/source-lints/dead-symbols-llhttp-helpers-install.test.ts: 50 | ["src/jsc/bindings/webcore/JSDOMConvert.h", /JSDOMConvertWebGL\.h/], 51 | ["src/jsc/bindings/IDLTypes.h", /\bIDLJSON\b/], 52 | ["src/jsc/headergen/sizegen.cpp", /headers-cpp\.h/], 53 | ]; 54 | const resurrected = checks.filter(([file, re]) => re.test(src(file))).map(([file, re]) => `${file}: ${re.source}`); 55 | expect(resurrected).toEqual([]); ^ error: expect(received).toEqual(expected) - [] + [ + "src/jsc/bindings/helpers.h: static WTF::AtomString toAtomString\(ZigString", + "src/jsc/bindings/helpers.h: \btoStringNotConst\b", + "src/jsc/bindings/helpers.h: \b__dot_char\b", + "src/jsc/bindings/helpers.h: \bZigStringCwd\b", + "src/jsc/bindings/helpers.h: \bBunStringCwd\b", + "src/jsc/bindings/helpers.h: toZigString\(WTF::String\*", + "src/jsc/bindings/helpers.h: toZigString\(JSC::Identifier&", + "src/jsc/bindings/helpers.h: toZigString\(JSC::Identifier\*", + "src/jsc/bindings/helpers.h: static WTF::StringView toStringView\(ZigString", + "src/jsc/bindings/headers-handwritten.h: \bWritableE ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: all passed $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/mechgate.xml" test/internal/source-lints/dead-symbols-llhttp-helpers-install.test.ts bun test v1.4.0 (6057ada) test/internal/source-lints/dead-symbols-llhttp-helpers-install.test.ts: (pass) dead C++ symbols in helpers.h / headers-handwritten.h / JSDOMWrapper.h / BunClientData do not reappear [37.66ms] (pass) dead Rust symbols in bun_core / jsc do not reappear [9.99ms] 2 pass 0 fail 2 expect() calls Ran 2 tests across 1 file. [2.03s] __F:0:S:0 release with fix: all passed $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) in 647ms (unchanged) ninja: Entering directory `/workspace/bun/build/release' [1/122] gen cpp.rs (cppbind) [2/122] gen generated_host_exports.rs generated_host_exports.rs: 94 exports (host=3, lazy=10, generic=81, rust=0); 239 extern-C blocks audited [3/122] gen JS modules (bundle-modules) Preprocess modules (8812ms) Bundle modules (38ms) Postprocesss modules (34ms) Bundle Functions (748ms) Generate Code (19ms) [9.67s] Bundled "src/js" for production 2569 kb 193 internal modules 13 native modules 90 internal functions across 19 files [3/121] cargo bun_bin → libbun_rust.a (--target x86_64-unknown-linux-gnu) nightly-2026-07-20-x86_64-unknown-linux-gnu unchanged - rustc 1.99.0-nightly (9f36de775 2026-07-19) �[1m�[92m Compiling�[0m bun_core v0.0.0 (/workspace/bun/src/bun_core) �[1m�[92m Compiling�[0m bun_errno v0.0.0 (/workspace/bun/src/errno) �[1m�[92m Compiling�[0m bun_ptr v0.0.0 (/workspace/bun/src/ptr) �[1m�[92m Compiling�[0m bun_boringssl_sys v0.0.0 (/workspace/bun/src/boringssl_sys) �[1m�[92m Compiling�[0m bun_safety v0.0.0 (/workspace/bun/src/safety) �[1m� ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` src/bun_core/string/mod.rs | 22 -- src/jsc/Errorable.rs | 7 - src/jsc/JSUint8Array.rs | 13 - src/jsc/RefString.rs | 9 - src/jsc/bindings/BunClientData.cpp | 5 - src/jsc/bindings/BunClientData.h | 5 - src/jsc/bindings/IDLTypes.h | 12 - src/jsc/bindings/JSDOMWrapper.h | 8 - src/jsc/bindings/JSVMClientDataClient.h | 13 - src/jsc/bindings/ares_build.h | 42 --- src/jsc/bindings/headers-cpp.h | 190 ----------- src/jsc/bindings/headers-handwritten.h | 22 -- src/jsc/bindings/helpers.h | 38 --- src/jsc/bindings/node/http/llhttp/api.h | 357 --------------------- src/jsc/bindings/webcore/HTTPHeaderValues.cpp | 68 ---- src/jsc/bindings/webcore/HTTPHeaderValues.h | 40 --- src/jsc/bindings/webcore/JSDOMConvert.h | 2 - src/jsc/bindings/webcore/JSDOMConvertJSON.h | 51 --- src/jsc/bindings/webcore/JSDOMConvertWebGL.cpp | 249 -------------- src/jsc/bindings/webcore/JSDOMConvertWebGL.h | 68 ---- src/jsc/bindings/webcore/TaskSource.h | 29 -- src/jsc/headergen/sizegen.cpp | 2 - src/jsc/sizes.rs | 1 - .../dead-symbols-llhttp-helpers-install.test.ts | 68 ++++ 24 files changed, 68 insertions(+), 1253 deletions(-) ``` </details> **gate history** · 1 passed · 1 rejected · iteration 2 <details><summary>evidence per changed file</summary> ``` file reads edits tests src/bun_core/string/mod.rs 1 2 0 src/jsc/Errorable.rs 1 1 0 src/jsc/JSUint8Array.rs 1 2 0 src/jsc/RefString.rs 2 2 0 src/jsc/bindings/BunClientData.cpp 1 1 0 src/jsc/bindings/BunClientData.h 2 2 0 src/jsc/bindings/IDLTypes.h 1 1 0 src/jsc/bindings/JSDOMWrapper.h 1 1 0 src/jsc/bindings/JSVMClientDataClient.h 0 0 0 src/jsc/bindings/ares_build.h 0 0 0 src/jsc/bindings/headers-cpp.h 0 0 0 src/jsc/bindings/headers-handwritten.h 1 1 0 src/jsc/bindings/helpers.h 2 2 0 src/jsc/bindings/node/http/llhttp/api.h 0 0 0 src/jsc/bindings/webcore/HTTPHeaderValues.cpp 0 0 0 src/jsc/bindings/webcore/HTTPHeaderValues.h 0 0 0 (+ 8 more files) ``` </details> <!-- robobun:evidence:end -->
|
Heads up: the automated gate check bounces this PR with "src/** changed but no test/** files" after 11bdeca removed the source-lint test. I won't re-add it since that was a deliberate push; just flagging in case the gate blocks the merge queue on your end. Happy to add a different style of test if there's one you'd prefer for dead-code sweeps. |
| @@ -124,14 +109,11 @@ class SerializedScriptValue : public ThreadSafeRefCounted<SerializedScriptValue> | |||
| static SYSV_ABI bool isTransferable(JSC::JSGlobalObject* globalObject, JSC::JSValue value); | |||
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🟡 Commit 11bdeca (HEAD) deletes test/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.ts — the only test this PR added — with a bare commit message and no timeline note, so the diff is now 29 files with no test. The PR description's Verification section and the entire robobun:evidence gate block still claim this test "fails (7/7) with src/ at main, passes (7/7) with this diff", which now overstates what ships. Either restore the test (updating its patterns after 63bfbb2 restored AbortSignal::signalFollow/m_followingSignal), or update the description/evidence block to drop the stale claim and record why the maintainer removed it.
Extended reasoning...
What happened
Commit 11bdeca3 (current HEAD, authored by Jarred Sumner on 2026-07-31 18:26 PDT) deletes test/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.ts (160 lines) with a bare one-line commit message. Nothing in the PR timeline explains the deletion — the last robobun comment ("Ready for a maintainer to merge", 2026-07-31 14:06Z) predates it. The changed-files list is now 29 files with no test file.
Meanwhile, the PR description's Verification section still states:
New
test/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.tsguards against reintroduction: fails (7/7) withsrc/atmain, passes (7/7) with this diff.
And the <!-- robobun:evidence:begin --> gate block still shows the full "fails on main / passes on PR" console output for that test, plus lists dead-symbols-ssv-wasi-webcore.test.ts | 160 ++ in the diff hotspot. Both are now stale — they present evidence for a test that no longer exists in the diff.
Step-by-step proof
git log --onelineshows11bdeca3 Delete test/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.tsas HEAD.git show --stat 11bdeca3shows exactly one change:dead-symbols-ssv-wasi-webcore.test.ts | 160 ---, 1 file changed, 160 deletions.ls test/internal/source-lints/confirms the file is absent from disk; siblingdead-symbols-react-compiler.test.tsis present (establishing the convention this file followed, also cited in the CodeRabbit learnings quoted in this PR's own timeline for Remove dead code from js_printer, bundler, js_parser, patch, shell, http #35978/Remove dead code from webcrypto C++, sqlite bindings, and Rust runtime #36178).- The PR's
<changed-files count="29">list contains notest/file. - Five prior commits on this branch (ae21882, bfd38c6, ba206e3, 071f23d, 63bfbb2) touched or referenced this test file across five review rounds; commit 63bfbb2 restored
AbortSignal::signalFollow/m_followingSignalat maintainer request, which would have required updating the test's patterns (ba206e3 had added header-side checks for exactly those symbols).
Why this is worth noting
CLAUDE.md #11: "NEVER overstate what you got done or what actually works in commits, PRs or in messages to the user." The description now claims an automated reversion guard that does not ship, and the machine-generated evidence block presents pass/fail output for a nonexistent file.
REVIEW.md: "Never silently weaken, skip, or delete an existing test or safety net. Every deletion needs a stated reason or replacement." — though this applies weakly here, since the test was both added and removed within this PR (net effect on the test suite is zero) and the deletion was an explicit maintainer action, not accidental.
Why nit, not normal
This is a "no behavior change" dead-code sweep. REVIEW.md's "every behavioral change ships an automated test" does not strictly apply — the deleted file was an accidental-revert source-lint guard, not a behavioral test. The smoke tests listed in the Verification section (structured-clone.test.ts 231/231, worker_threads.test.ts 91/91, websocket-client, abort, performance-entries, wasi, event-target) still ran and passed per the CI status comment, and bun bd / rust:check-all are the primary correctness gates for a pure-deletion diff. Merging as-is causes no runtime failure — the concrete gap is PR-hygiene: the description overstates what ships.
How to fix
Either:
- Restore the test, updating its patterns to drop the
AbortSignal.hsignalFollow/m_followingSignalchecks that 63bfbb2 made stale (the likely reason it was dropped rather than fixed), or - Update the PR description: remove the "New
test/internal/source-lints/..." bullet from Verification, regenerate or delete therobobun:evidenceblock, and add a one-line note recording why the guard was dropped (e.g. "source-lint guard removed by maintainer — smoke tests + build are the reversion gate").
2 participants
Net: -3673 LOC (30 files, +177 / -3850). No behavior change.
Nothing here overlaps with the other open dead-code PRs (#34965, #34759, #36426, #36178, #36237, #35775, #35559, #36318, #36115, #35437, #35880); every touched file was checked against their file lists.
SerializedScriptValue.cpp / .h (7239 → 5090, 413 → 202)
#if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS),#if ENABLE(WEB_RTC),#if ENABLE(WEB_CODECS),#if ENABLE(PREDEFINED_COLOR_SPACE_DISPLAY_P3)blocks. Bun's JSCOnlycmakeconfig.hsets all four to 0 on every target, and the referenced types (OffscreenCanvas,RTCCertificate,DetachedRTCDataChannel,WebCodecsVideoFrame, ...) have no headers anywhere undersrc/, so the guarded bodies could not compile if the macros flipped.DOMPoint/DOMRect/DOMMatrix/DOMQuad),ImageBitmap,File/FileList,Blob,ImageData, blob-URL/IDB helpers, and alternate ctors. All date to 2022.rgacrosssrc/andbuild/debug/codegen/):create(StringView),create(JSContextRef, JSValueRef, JSValueRef*),deserialize(JSContextRef, JSValueRef*),toString(),nullValue(),wireFormatVersion(), and the never-instantiatedencode<Encoder>()/decode<Decoder>()templates. Plus their private-only helpersCloneSerializer::serialize(StringView, Vector<uint8_t>&),CloneDeserializer::deserializeString(),blobFilePathForBlobURL(),wrapCryptoKey(),unwrapCryptoKey(),write/read(DestinationColorSpaceTag), thePLATFORM(COCOA)CFDataRefhelpers, and thefillTransferMap(const Vector<Ref<T>>&, ...)overload.PredefinedColorSpaceTag,DestinationColorSpaceTag,ImageDataPoolTag,m_transferredImageBitmaps, and 18SerializationTagvalues that are no longer written or read in live code (FileTag,FileListTag,ImageDataTag,BlobTag,DOMPoint*/Rect*/Matrix*/QuadTag,ImageBitmap*Tag,OffscreenCanvasTransferTag,RTC*Tag,WebCodecs*Tag). The grammar-comment documentation block is kept.Followup note:
m_blobURLs/m_blobFilePathsare now write-only (their sole readerblobFilePathForBlobURLis gone), but removing them cascades through the liveCloneDeserializerctor params and the publicdeserialize(..., blobURLs, blobFilePaths, ...)overload. Left as-is.WebSocket.cpp / .h (-212)
create(ctx, url, protocols, headers, bool)5-arg overload and the threeconnect(const String&[, ...])overloads (allJSWebSocket.cpppaths use the 2/3/8/9-argcreateand the 4-argconnect).didUpdateBufferedAmount(unsigned), the decl-onlydidReceiveData(const char*, size_t)andWebSocket(ScriptExecutionContext&, const String&), and the uncalledofferPerMessageDeflate()getter.ResourceLoadObserver/MixedContentChecker,ENABLE(INTELLIGENT_TRACKING_PREVENTION),contextDestroyed/suspend/resume/stop/activeDOMObjectName, fourConnectedWebSocketKind::Servercase blocks, and the commented#includes.m_dispatchedErrorEvent(only read by the removedsuspend/resumeblock).JSDOMConvert{Sequences,Strings,Record,Union}.h / .cpp (-381)
NumericSequenceConverterand the fiveSequenceConverter<IDL{Long,Float,UnrestrictedFloat,Double,UnrestrictedDouble}>specializations.IDLSequence<T>is only instantiated with string / enum / interface / dictionary / object element types in Bun (rg 'IDLSequence<IDL(Long|Float|Double|Unrestricted)' src/ build/debug/codegen/= 0).Converter<IDLFrozenArray<T>>(only theJSConverterside is used),JSConverter<IDLRecord<K,V>>(only theConverterside is used), and theIDLAllowSharedAdaptor<IDLUnion<IDLArrayBufferView, IDLArrayBuffer>>specs (webcrypto uses the un-wrapped union).propertyNameToString/propertyNameToAtomString, theIDLLegacyNullToEmpty{,Atom}StringAdaptorandIDLAtomStringAdaptor<IDL{USV,Byte}String>converters, andvalueToByteAtomString/valueToUSVAtomString(their only callers).windows/rescle.cpp / .h (-278)
The only entry point
rescle__setWindowsMetadata(fromsrc/sys/windows/mod.rs) usesLoad,SetIcon,SetVersionString,SetFileVersion,SetProductVersion,Commit. RemovedSetExecutionLevel,IsExecutionLevelSet,SetApplicationManifest,IsApplicationManifestSet,GetVersionString×2,ChangeString×2,ChangeRcData,GetString×2,OnEnumResourceManifest+ itsLoad()registration, the now-always-false execution-level and manifest branches inCommit(),ReadFileToString, theexecutionLevel_/originalExecutionLevel_/applicationManifestPath_/manifestString_members, and five unusedRU_VS_*macros.Followup note: with
ChangeString/ChangeRcDatagone,stringTableMap_andrcDataLngMap_are now populated byLoad()and written back unchanged byCommit(). That round-trip was already a semantic no-op onmain(the removed mutators had zero callers there too), but removing it touches a live Windowsbun build --compilepath rather than an unreferenced helper, so it is deferred rather than folded into this sweep.Performance.cpp / .h + PerformanceObserver.h (-154)
addResourceTiming(ResourceTiming&&)(no callers; Bun's fetch producesPerformanceResourceTimingviaqueueEntrydirectly),isResourceTimingBufferFull(),m_backupResourceTimingBuffer,m_waitingForBackupBufferToBeProcessed.allowHighPrecisionTime()+highTimePrecision,timeResolution(),relativeTimeFromTimeOriginInReducedResolution(MonotonicTime)(no callers).navigation(),reportFirstContentfulPaint/addNavigationTiming/navigationFinished,resourceTimingBufferFullTimerFired().PerformanceObserver.h:hasNavigationTiming/addedNavigationTiming/m_hasNavigationTiming(only referenced from the commented-out code above).EventTarget.cpp / .h + EventListenerMap (-51)
isPaymentRequest()virtual (no callers, no overriders).legacyType(const Event&)static, which unconditionally returnednullAtom()since 2022, and the legacy-fallback block infireEventListenersit made unreachable.hasCapturingEventListeners(const AtomString&)(no callers) and its only calleeEventListenerMap::containsCapturing.invalidateJSEventListeners(JSC::JSObject*).src/js/node/wasi.ts (-280)
exports.X = exports.Y = ... = void 0;pre-declaration chains (186 LOC). These are tsc emit artifacts from the originalwasi-jsnpm bundle; every property is re-assigned to its real value immediately after.WASIExitError/WASIKillErrorclasses (thetypesmodule is only consumed astypes_1.WASIError).exports.SOCKET_DEFAULT_RIGHTS(written once, never read).initWasiFdInfo()(never called; contains five debugconsole.logcalls).if (log.enabled) { ... }blocks and barelog(...)/logOpen(...)calls (logis hard-coded to() => {}and never reassigned).src/js/thirdparty/ws.js (-19)
secWebSocketExtensions/PerMessageDeflateblock (May 2023).Rust (-22)
bun_http:PRINT_EVERY/PRINT_EVERY_Idebug scaffolding and theif PRINT_EVERY != 0 { ... }block it made always-dead.bun_threading: dropGuardedBy,RawMutex,RwLockReadGuard,RwLockWriteGuardfrom the crate re-export list (zerobun_threading::Xreferences; the backing types stay forGuarded's impl).bun_standalone_graph:Error::UnsupportedTargetvariant (never constructed;download_to_pathreturns other variants).bun_bunfig: the unusedOfflineModere-export.Verification
rg -w <symbol> src/ build/debug/codegen/ src/codegen/returned only the definition for each deleted item.bun bdbuilds clean.bun run rust:check-allpasses on all 10 targets (linux/macos/windows × x64/aarch64, plus musl).structured-clone.test.ts(231/231),structuredClone-classes.test.ts,worker_threads.test.ts(91/91),websocket-client.test.ts,abort.test.ts,performance-entries.test.ts,wasi.test.js,deno/event/event-target.test.ts.test/internal/source-lints/dead-symbols-ssv-wasi-webcore.test.tsguards against reintroduction: fails (7/7) withsrc/atmain, passes (7/7) with this diff.[review] gate passed · iteration 1 · 30 files touched
fails on main (without fix)
passes on PR (with fix)
diff hotspot
gate history · 7 passed · 0 rejected · iteration 1
evidence per changed file