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TypeScript/tests
Anders Hejlsberg 2c68ded954 Improve narrowing logic for instanceof, type predicate functions, and assertion functions (#49625)
* Improve narrowing logic for instanceof, type predicates, and assertions

* Accept new baselines

* Add tests

* Tweak algorithm

* Accept new baselines

* Optimize for discriminated unions
2022-07-15 14:01:55 -10:00
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