Java script true type class

We are having the issue that is already aknowledged and described at https://support.symantec.com/us/en/article.TECH255476.html

We would like to remove the js extension from our attachment list, and i want to be sure it is replaced with the right true type version like it is described in the document.

But i do not know what true type format corresponds with .js

Is it part of the executable file class? I attached an image so you can see what i mean.