fix: unexpected null pointer exception due to race condition #243
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Co-authored-by: JounQin <admin@1stg.me>
🦋 Changeset detectedLatest commit: e9027a8 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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Pull Request Overview
This PR fixes an unexpected null pointer exception due to a race condition in the worker thread message processing. Key changes include:
- Adjusting the message retrieval logic in src/index.ts to properly handle race conditions.
- Adding a new worker file (test/worker-identity.js) and a high-volume reliability test (test/reliability.spec.ts) to validate behavior.
- Updating package.json configuration regarding ignored files.
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| test/worker-identity.js | Adds a simple worker function using runAsWorker to echo the input value. |
| test/reliability.spec.ts | Introduces a high-volume test to validate worker reliability, conditionally run on CI. |
| src/index.ts | Refactors message retrieval to mitigate the race condition causing null pointer exceptions. |
| package.json | Updates the ignoreFiles property from "**/*.d.ts" to "lib". |
| .changeset/shiny-kids-check.md | Records the patch bump and fix description. |
Comments suppressed due to low confidence (1)
package.json:139
- Please confirm that changing the ignored files from "**/*.d.ts" to "lib" is intentional and does not exclude required type definition files from processes like linting or publishing.
"lib"
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Reviewed everything up to e9027a8 in 2 minutes and 0 seconds. Click for details.
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6draft comments. View those below. - Modify your settings and rules to customize what types of comments Ellipsis leaves. And don't forget to react with 👍 or 👎 to teach Ellipsis.
1. .changeset/shiny-kids-check.md:2
- Draft comment:
Ensure the changeset key formatting (quotes around "synckit") is intentional; typically keys are unquoted. - Reason this comment was not posted:
Confidence changes required:33%<= threshold50%None
2. package.json:138
- Draft comment:
Verify that changing 'ignoreFiles' from "**/*.d.ts" to "lib" is deliberate and meets your type-coverage goals. - Reason this comment was not posted:
Comment did not seem useful. Confidence is useful =0%<= threshold50%The comment is asking the PR author to verify their intention behind changing theignoreFilespattern. This violates the rule against asking the author to confirm their intention or to ensure the behavior is intended. Therefore, this comment should be removed.
3. src/index.ts:545
- Draft comment:
The new logic to check for a valid message (using msg?.id and recursive calls) addresses the race condition. Consider consolidating the redundant id-checks to simplify the control flow and avoid deep recursion in edge cases. - Reason this comment was not posted:
Comment looked like it was already resolved.
4. test/reliability.spec.ts:5
- Draft comment:
The test loop runs 1e6 iterations. Since it is gated by the CI flag, ensure this high iteration count is acceptable and doesn’t impact CI performance. - Reason this comment was not posted:
Confidence changes required:33%<= threshold50%None
5. test/worker-identity.js:1
- Draft comment:
The worker identity implementation is minimal and clear. No issues detected. - Reason this comment was not posted:
Confidence changes required:0%<= threshold50%None
6. test/reliability.spec.ts:18
- Draft comment:
Typographical note: The log message in this line readsFailed on ${index + 1}/${times} run.. Consider revising it to use plural form (e.g.runs) for consistency, since the number of runs is greater than one. - Reason this comment was not posted:
Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 10% vs. threshold = 50% This is a very minor grammatical suggestion about an error message that will only show up if the test fails. While technically correct (since times=1e6 means multiple runs), this kind of minor wording change in an error message doesn't impact functionality. According to the rules, we should not make purely informative comments or comments that are unimportant. The inconsistency between "runs" in the test title and "run" in the error message could be confusing to users seeing the error. Maybe consistency in terminology is more important than I think? While consistency is good, this is still an extremely minor issue in an error message. The meaning is perfectly clear either way, and this doesn't warrant a PR comment. Delete this comment as it's too minor and doesn't require a code change. Error message wording that doesn't impact functionality shouldn't be nitpicked in PR comments.
Workflow ID: wflow_3KA8Xc2pngPlmIoH
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## 0.9.x #243 +/- ##
===========================================
- Coverage 100.00% 98.65% -1.35%
===========================================
Files 1 1
Lines 218 223 +5
Branches 105 108 +3
===========================================
+ Hits 218 220 +2
- Misses 0 3 +3 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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related #217
Important
Fix null pointer exception in
receiveMessageWithIdand add reliability test forcreateSyncFn.receiveMessageWithIdinsrc/index.tsby handling undefined messages.reliability.spec.tsto testcreateSyncFnover 1 million iterations.worker-identity.jsas a worker script for testing.package.jsonto ignorelibdirectory in type coverage.This description was created by
for e9027a8. You can customize this summary. It will automatically update as commits are pushed.