Anders Hejlsberg 0aab63b7ff Fix narrowing of optional chains (#36089) ...

* Check for definitely not undefined instead of maybe not undefined

* Fix comment

* Add tests

2020-01-08 15:37:27 -08:00

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baselines/reference

Fix narrowing of optional chains (#36089)

2020-01-08 15:37:27 -08:00

cases

Fix narrowing of optional chains (#36089)

2020-01-08 15:37:27 -08:00

lib

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projects

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