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[PR #6144] [MERGED] fix(cancellation): preserve caller abort reason in cancellation errors #7159
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opened 2026-11-01 21:45:48 +00:00 by bsakaguchi
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📋 Pull Request Information
Original PR: https://github.com/morluto/rea/pull/6144
Author: @agorevski
Created: 10/21/2026
Status: ✅ Merged
Merged: 10/21/2026
Merged by: @morluto
Base:
main← Head:fix/cancel-reason-a📝 Commits (2)
b74ae8efix(cancellation): preserve caller abort reason in cancellation errorsb215ca0test(cancellation): assert the exact caller reason identity📊 Changes
22 files changed (+253 additions, -52 deletions)
View changed files
📝
src/application/analysisView/AnalysisViewService.test.ts(+22 -15)📝
src/application/analysisView/AnalysisViewService.ts(+12 -4)📝
src/application/binaryDiagnostics/BinaryLayoutService.test.ts(+27 -0)📝
src/application/binaryDiagnostics/BinaryLayoutService.ts(+5 -1)📝
src/application/binaryDiagnostics/RecordedCrashService.test.ts(+27 -0)📝
src/application/binaryDiagnostics/RecordedCrashService.ts(+5 -1)📝
src/application/flutter/DartAotInspection.ts(+5 -1)📝
src/application/javascript/JavaScriptArtifactReconstruction.ts(+1 -0)📝
src/application/wasm/WasmArtifactService.test.ts(+11 -7)📝
src/application/wasm/WasmArtifactService.ts(+5 -1)📝
src/artifacts/AsarListing.ts(+1 -0)📝
src/artifacts/javascript/JavaScriptArtifactFiles.ts(+1 -0)📝
src/flutter/FlutterBuildProvider.ts(+5 -1)📝
src/kuna/KunaProjectReader.ts(+4 -1)📝
src/process/DetachedPgpSignature.test.ts(+20 -0)📝
src/process/DetachedPgpSignature.ts(+1 -0)📝
src/server/runDerivedOperation.test.ts(+44 -1)📝
src/server/runDerivedOperation.ts(+15 -3)📝
tests/boundary/filesystem/asarListingAdmission.test.ts(+5 -2)📝
tests/boundary/filesystem/javascriptArtifactReconstruction.test.ts(+8 -4)...and 2 more files
📄 Description
Summary
Cancellation errors built at nine producing boundaries omitted the caller's
signal.reasonas the errorcause. The typed result therefore reportedcancelledwith an undefined reason, even though the exact object passed toAbortController.abort(reason)was still on the signal. This passes the exact reason at each producing site, following the convention already used byArtifactHash.abortIfNeededandPeResourcesService. Cancellation classification and cleanup behavior are unchanged.Fixes #5935
Fixes #5944
Fixes #6100
Fixes #6101
Fixes #6110
Fixes #6113
Fixes #6121
Fixes #6131
Fixes #6132
Problem and expected behavior
Smallest trigger: pass an
AbortSignalaborted with a non-undefined reason (null, a string, or an object) to one of the affected services or helpers, either already aborted or aborted while the operation runs.Expected: the cancellation error's
causeis that exact reason. Observed:cause === undefined. Violated invariant: a caller-supplied abort reason survives into the typed cancellation error.Change and scope
Each affected site now passes
{ cause: <signal>.reason }to the cancellation error it constructs:src/artifacts/javascript/JavaScriptArtifactFiles.tsandsrc/application/javascript/JavaScriptArtifactReconstruction.ts:abortIfNeeded.src/server/runDerivedOperation.ts: all three checkpoints (before compute, after compute, at terminal delivery).src/process/DetachedPgpSignature.ts: the sharedcancelled()helper, which covers every cancelled return.src/artifacts/AsarListing.ts: header listing traversal checkpoint.src/application/flutter/DartAotInspection.tsandsrc/flutter/FlutterBuildProvider.ts: the wrapper guard and the provider pre-admission guard.src/application/analysisView/AnalysisViewService.ts: both evidence-file cancellation checkpoints.src/application/binaryDiagnostics/BinaryLayoutService.tsandRecordedCrashService.ts: admission guards.src/application/wasm/WasmArtifactService.ts: admission guard.src/kuna/KunaProjectReader.ts: shared assembly-index wait that returnsABORTED.Intentionally not included: other cancellation sites that already pass a cause, public CLI/MCP schema changes, and any change to provider execution. The fix follows the existing
{ cause: signal.reason }convention within existing boundaries.Follow the contribution scope.
Unresolved scope, authority, side effects, or required verification block
integration. Link the required maintainer scope decision for new providers or
capabilities involving target execution, injection, mutation, or protection
recovery; ordinary fixes within existing boundaries may state "not applicable".
Draft PRs may leave the scope decision pending and the readiness and merge checklists
unchecked. Maintainers can help resolve open questions.
Contract and boundary impact
causeis now populated. Whethercausereaches MCP wire output was not examined.docs/public/product-catalog.json), package, or installation impact (CI generates and validates ignored catalogs andskills/; edit authored instructions in.agents/skills/reverse-engineer-anything/and never commit build outputs): none.Expected effects (check known effects; use documentation-only on its own).
Unchecked items do not establish absence; leave uncertainties visible.
The change adds no new effects; existing read paths are unchanged, so no effect boxes are checked.
Evidence and regression coverage
src/application/analysisView/AnalysisViewService.test.ts: pre-aborted and running evidence-file cancellation.src/application/binaryDiagnostics/BinaryLayoutService.test.tsandRecordedCrashService.test.ts: pre-invocation admission, zero provider calls.src/application/wasm/WasmArtifactService.test.ts: pre-provider cancellation.src/process/DetachedPgpSignature.test.ts:null, string, and object reasons.src/server/runDerivedOperation.test.ts: before compute, after compute, and at terminal delivery.tests/boundary/filesystem/asarListingAdmission.test.ts: mid-traversal ASAR cancellation.tests/boundary/filesystem/javascriptArtifactReconstruction.test.ts: pre-aborted reconstruction.tests/boundary/mcp/dartAotSummaryMcp.test.ts: Dart AOT wrapper and service-to-provider path.tests/boundary/providers/kuna/kunaReaderCancellation.test.ts: shared assembly-index wait, for all three operations.origin/main(01788bac8) while keeping the new tests. The 10 test files then reported 17 failed and 126 passed, with failures covering all nine issues. After a later test-helper refactor,runDerivedOperation.test.tsalone reported 3 failed and 5 passed on the base sources. Evidence is executed (in-process service, boundary, and simulated-provider tests).AnalysisViewServiceis fixed but has no deterministic test; the running-abort test may hit either checkpoint.JavaScriptArtifactFiles.tsabortIfNeededfix has no isolated test; the reconstruction test covers the sibling helper inJavaScriptArtifactReconstruction.ts.service.execute, not in isolation.kunaProjectReaderConcurrency.test.ts; the regression was added tokunaReaderCancellation.test.ts, which already covers this path.For evidence-bearing changes:
Validation performed
Review follow-up at
b215ca09c(the bullets below describe the earlier commit):npm run test:focused -- tests/boundary/filesystem/asarListingAdmission.test.ts tests/boundary/filesystem/javascriptArtifactReconstruction.test.ts— exit 0, 2 files, 24 tests passed.node scripts/run-typescript.mjs --noEmit— exit 0.npx oxlinton the changed test files — 0 errors, 0 warnings.npx oxfmton the changed test files — formatted.npx vitest run src/application/analysisView/AnalysisViewService.test.ts src/application/binaryDiagnostics/BinaryLayoutService.test.ts src/application/binaryDiagnostics/RecordedCrashService.test.ts src/application/wasm/WasmArtifactService.test.ts src/process/DetachedPgpSignature.test.ts src/server/runDerivedOperation.test.ts tests/boundary/filesystem/asarListingAdmission.test.ts tests/boundary/filesystem/javascriptArtifactReconstruction.test.ts tests/boundary/mcp/dartAotSummaryMcp.test.ts tests/boundary/providers/kuna/kunaReaderCancellation.test.ts— passed: 10 files, 143 tests.origin/main— 17 failed, 126 passed. Fixed files were restored and verified withcmp.npx vitest run src/server/runDerivedOperation.test.tson base sources — 3 failed, 5 passed.npm run typecheck— exit 0.npx oxlinton the 22 changed files — exit 0 (warnings only, on pre-existing lines).npx oxfmt --checkon the 22 changed files — passed.Full suite not run.
Compatibility, safety, and release
cause.Author readiness
Human owner: @agorevski
Before merge
type(scope): outcome.🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.