* Remove check narrowing only certain types, add test showing issues with this
* string literal case test
* Reconcile fix with CFA work
* Defaultable -> NotNarrowable to align with use
* Missed a defaultable in comments
* Add test for narrowing to unions of string literals
* Actually merge from master
* Run fixupParentReferences when parsing isolated jsDocComment
* initial revision of unit test support for project system in tsserver
* Add non-widening forms of null and undefined
* Create separate control flows for property declarations with initializers
* Add regression test
* Add tests
* Remove unused variable
* Add null check and CR feedback
* Revert "Merge pull request #7235 from weswigham/narrow-all-types"
This reverts commit ef0f6c8fe4, reversing
changes made to 9f087cb62a.
* reuse the fixupParentReferences function
* Fix up error from merging with master