Fix crash on private constructors in intersection base types - #64165
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Mateusz Burzyński (Andarist) wants to merge 1 commit into
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Mateusz Burzyński (Andarist)
September 4, 2026 07:30
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🟢 Approval recommended
The focused checker change safely handles all constructor signatures and includes comprehensive regression baselines.
Pull request overview
Prevents crashes when intersection base types include private constructors by checking each constructor’s declaring class.
Changes:
- Centralizes constructor accessibility checks across extension and instantiation paths.
- Adds regression and edge-case coverage with diagnostic, type, and symbol baselines.
File summaries
| File | Description |
|---|---|
tsc/internal/checker/checker.go |
Safely resolves inaccessible constructors. |
tsc/testdata/tests/cases/compiler/extendPrivateConstructorClass2.ts |
Adds compiler regression cases. |
tsc/testdata/baselines/reference/compiler/extendPrivateConstructorClass2.errors.txt |
Records expected diagnostics. |
tsc/testdata/baselines/reference/compiler/extendPrivateConstructorClass2.types |
Records inferred types. |
tsc/testdata/baselines/reference/compiler/extendPrivateConstructorClass2.symbols |
Records symbol resolution. |
Review details
- Files reviewed: 5/5 changed files
- Comments generated: 0
- Review effort level: Balanced
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Fixes #62614
Recreates #62622