I am trying to install Underscore typings but getting error
Unable to find "underscore" ("npm") in the registry. Did you want to try searching another source? Also, if you want contribute these typings, please help us: https://github.com/typings/registry
The core issue was a permission issue on my Mac. Your user account need to own your npm install directory.
Then you can run the command:
typings install dt~underscore --global --save
You should not see any more errors.