Fix extract type crash on unresolvable alias references#47136
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andrewbranch merged 1 commit intomicrosoft:mainfrom Dec 13, 2021
Merged
Fix extract type crash on unresolvable alias references#47136andrewbranch merged 1 commit intomicrosoft:mainfrom
andrewbranch merged 1 commit intomicrosoft:mainfrom
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RyanCavanaugh
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Dec 13, 2021
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@typescript-bot cherry-pick this to release-4.5 |
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Heya @DanielRosenwasser, I've started to run the task to cherry-pick this into |
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Hey @DanielRosenwasser, I've opened #47379 for you. |
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Component commits: e61702c Fix extract type crash
DanielRosenwasser
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Component commits: e61702c Fix extract type crash Co-authored-by: Andrew Branch <[email protected]>
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Fixes #32860
If you run
checker.resolveName("T", location, SymbolFlags.TypeParameter)and it returns a Symbol, you do not have a guarantee that you have a type parameter symbol. You might have an alias symbol that couldn’t be resolved.