Wesley Wigham 6a777ff6b3
Fix crash when serializing the return type of a generic call to Array.prototype.flat (#38904)
* Add declaration emit error and checking for circularly referential unions produced by recursive conditionals

* Allow indexed accesses to produce alias symbols on types

* Add test that still triggers the declaration emit error

* Fix spelling
2020-06-15 11:46:10 -07:00
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