Thank you in advanced!
1.4.0 is compatible with XP7 - https://github.com/enonic/starter-typescript/tree/v1.4.0, if not please report a bug on the issue-tab on the github repo.
thank you, I added a comment in a similar issue in that repo
Typescript starter is obsolete and only maintained for compatibility with pre-XP7 versions.
thank you very much!