Wesley Wigham eafff75c2a
Remove diagnostic dependent output in structuredTypeRelatedTo (#29817)
* Unify variance probing error exceptions between interfaces/aliases

* Consistiently return false on variance probe failure

* Remove strictFunctionTypes early bail from getVariances so independent type parameters are correctly measured

* Fix lint, remove now-redundant change from covariant void check function
2019-02-19 11:39:16 -08:00
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