* tsc --watch should clear screen on new compilation
* added optional clearScreen method to System]
* implemented via `x1Bc`, reset screen
* fixes 13020
* Feedback on if statements; api .d.ts baseline additions
* Stopped clearing screen in tsc.js's reportWatchMode
* Added unit tests
* Still instantiate the extends clause even when theres a noimplicitany error in js
* Only be permissive for JS
* In JS, instantiate classes even when they have too many type arguments, instead of returning unknownType
* Fix#19959 and #19958: Remove un-localizable messages
* Update message
* Reorder error messages
* Fix https://github.com/Microsoft/TypeScript/issues/15399: remove periods at the end of messages
* Accept baselines for error code changes
* accept baselines for removed periods
* Update diagnostic messages
Previously, when inferring to a self-referential (or otherwise recursive)
homomorphic mapped type from a source type that also has recursive
references, type inference would enter infinite recursion.
Now there is a more complex stack for mapped type inference. It mirrors
the existing symbolStack but (1) includes the source type and (2) is
passed through inferTypeForHomomorphicMappedType, which is actually
called outside of inferTypes, and so restarts the symbolStack cache
every time.
Formerly, they were excluded as values, but the error is just as
relevant for classes.
Note that it is not applied to enums since switching to an indexed
access expression will not help for an enum.
Don't issue a "multiple declarations must have the same type" error for
JS static property assignments, because these don't appear to have a
type in this case.
* Error when LHS of instanceof is Union of Primitives #18519
* Refactor to allTypesAssignableToKind method and update test
* Use ternary expression instead of if / else blocks
* Remove length limit on spelling suggestions; use levenshteinWithMax for performance
* Remove suggestion exceptions
* Move to checker.ts
* Reintroduce candidateName max length
This means that Javascript property assignments always create a
namespace, never statics on a class. The ES5->ES6 class refactoring
still needs to be updated.
* Do visibility painting from collectLinkedAliases in checker to remove statefullness in declaration emit
* Fix#17085
* Add deeply destructured array to test
* Add test case for #18634
* Add PR feedback
