Config will retrieve the .tscrc.json configuration from the provided context.

Diagnostics will retrieve the diagnostics notifier from the provided context.

FileSystem will retrieve the FileSystem object from the provided context.

WithConfig will create a context that contains a .tscrc.json configuration.

WithDiagnostics will create a context that contains a diagnostics notifier.

WithFileSystem will create a context that contains a file system for working with files.