Wesley Wigham 456806b070
Allow filterType to consider union constraints of non-union types when determining never-ness (#43763)
* Allow filterType to consider union constraints of non-union types when determining never-ness

* Move impl to callback

* Baseline change in narrowing behavior into test, fix post-LKG build
2021-05-05 13:35:09 -07:00
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2020-06-17 03:28:55 -04:00
2020-06-17 03:28:55 -04:00
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