Limit size of union types resulting from intersection type normalization #31572
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@typescript-bot run dt |
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Heya @ahejlsberg, I've started to run the parallelized Definitely Typed test suite on this PR at f20a4fd. You can monitor the build here. It should now contribute to this PR's status checks. |
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@typescript-bot test this |
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Heya @ahejlsberg, I've started to run the extended test suite on this PR at f20a4fd. You can monitor the build here. It should now contribute to this PR's status checks. |
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@weswigham Yes, I'll include that as a test case. It does indeed error as expected. |
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The RWC and DT runs look clean (issues are unrelated). |
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With this PR we estimate the size of union types created by intersection type normalization and issue an error if the estimate exceeds 100,000 constituent types. This ensures that we don't spend inordinate amounts of time and/or run out of memory.
Fixes #30050.