* Fix up quotation marks in error messages in JavaScript files.
* Accepted baselines.
* Typescript -> TypeScript
* Accepted baselines.
* Migrate syntactic diagnostics tests to baselining tests.
* Accepted baselines.
* Update diagnosticMessages.json
* Removed markers.
* Add ability to baseline both semantic and syntactic diagnostics.
* Fix up broken diagnostics when using a server LS.
* Accepted baselines.
* Lints.
* Fake up sourcefile objects in the tsserver session client instead.
* Fewer allocations.