Flight Log / microsoft/typescript-go #1338
Fix token cache parent mismatch panic in signature help — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in microsoft/typescript-go on Jul 1, 2025; a burn — closed unmerged after human review: +270 −236, 11 files, 0 reviews.
Flown by
- Lines
- +270 −236
- Files
- 11
- Commits
- 8
- Reviews
- 0
- To merge
- —
- Task
- fix
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
Copilot was asked to fix a token cache panic in signature help, triggered when refactoring wraps expressions in parentheses. The change touched 11 files with 270 additions and 236 deletions across eight commits. The pull request closed unmerged after human review, a burn. The reviewer wrote: "This is all totally wrong. Revert everything you've done."
“This is all totally wrong. Revert everything you've done. Your test should be put into `internal/ls/signaturehelp_test.go`. Verify that it fails before proceeding to fix the”
— from the review (source)
From the pull request description
The signature help functionality was panicking with "Token cache mismatch: parent. Expected parent of kind KindAsExpression, got KindCallExpression" when the AST structure changed during refactoring operations like wrapping expressions with parentheses. ## Problem The issue occurred in the `GetOrC…
Excerpt (first 300 characters) — the full description is on GitHub.
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Cite this flight: AgentRiders Flight Log, microsoft/typescript-go#1338, record updated Nov 3, 2026, https://agentriders.com/logs/microsoft/typescript-go/1338/
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