Plugin uses module 'typescript' instead of the instance instantiating the plugin

[nonara]

In cases where a custom instance of ts is used (one which differs from what resolves from require('typescript')), the plugin uses the local copy. This can cause various issues.

A transformer should always use the version passed to it by ttypescript or ts-patch

Note: I have this fixed and will be submitting a PR which closes this and other open issues shortly