golem::add_js_file() should not duplicate file extension

[gadenbuie]

A minor issue: golem::add_js_file() will add an extra .js if one already exists on the input name.

golem::add_js_file("test.js")
✔ File created at /Users/garrick/golemDemo/inst/app/www/test.js.js

I was expecting it to work like usethis::use_r()

use_r("test.R")
● Modify 'R/test.R'

[ColinFay]

That definitely shouldn't happen.

I think wrapping the file name in tools::file_path_sans_ext() would solve that.

We might have the same thing happening with the other file creators.

I will give it a shot, thanks for reporting that!

[ColinFay]

Close by #236.

Thanks for the bug report !