- Use relative imports in place of most of our absolute ones.
- Add "private" ambient modules for modules that we need to import using
an absolute path (e.g. when app/.../test-something.ts needs to import
ui/styling/style-scope)
Removing __extends function generation by setting the
noEmitHelpers flag we removed the __decorate as well.
While the __extends exists in the runtimes, __decorate
is an EcmaScript-related functionality, hence its place
is in the modules.
