It is odd that you are not seeing CodeLens in the test files in TypeScript projects, as it is supported there. Thanks to this report, we found that the CodeLens does not always refresh correctly, and you may have run into one of these edge cases. Can you try to reload the project, or switching to a different file? It would be particularly helpful, if you could find a reliable way to reproduce this issue, as we have not yet found the real issue.
We will look into this in more detail, and hope to provide a fix with the next release.
About other code files: yes, the feature to show the reference count, is only available in Java in version 1.0.1, and we have missed to point this out in the release notes. However, we were aware of this limitation and have already finished work on the Reference CodeLens for TypeScript, which will be released with the next version. Additionally, we will introduce an option to disable CodeLens for those users who feel distracted by it.