This step converts as many explicit accesses as possible in favor of direct imports from the modules in which things were declared. This restores the code (as much as possible) back to how it looked originally before the explicitify step, e.g. instead of "ts.Node" and "ts.Symbol", we have just "Node" and "Symbol".
This step converts each file into an exported module by hoisting the namespace bodies into the global scope and transferring internal markers down onto declarations as needed.
The namespaces are reconstructed as "barrel"-style modules, which are identical to the old namespace objects in structure. These reconstructed namespaces are then imported in the newly module-ified files, making existing expressions like "ts." valid.
* Add failing test
* Block auto-import module specifiers including node_modules path
* Eagerly resolve module specifiers in completions in nodenext so failures can be filtered
* Add completion info flags for telemetry
* Update API baseline
* Update completions baselines
* Fix missed boolean flip
* Fix remaining tests
* Add import assertions for type-only imports and import types to change resolver modes
* By popular request, only allow mode assertions on top-level type only imports
* Add specifier options parameter to specifier generation
* Add some failing tests around transient symbols
* Working, but slower
* A class is much faster, apparently
* This is probably best?
* Back to multimap
* Go back to single symbol cache
* Revert now-unnecessary generics
* Rename and reorganize
* Fix weird compound condition
* Clean up
