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Investigate 4.8 perf regression from "Use NonNullable<T> in more scenarios" #49622

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#49760
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Investigate 4.8 perf regression from "Use NonNullable<T> in more scenarios"#49622
#49760
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Domain: PerformancePerformance relatedFix AvailableA PR has been opened for this issueNeeds InvestigationThis issue needs a team member to investigate its status.
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TypeScript 4.8.1

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@DanielRosenwasser
Daniel Rosenwasser (DanielRosenwasser)
opened on Jun 21, 2022

#49330 added about 100ms to Compiler-Unions

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We should investigate the root cause and any mitigations if possible.

Originally posted by Daniel Rosenwasser (@DanielRosenwasser) in #49330 (comment)

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Domain: PerformancePerformance relatedFix AvailableA PR has been opened for this issueNeeds InvestigationThis issue needs a team member to investigate its status.

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