Regular expression to remove a file's extension

Question

I am in need of a regular expression that can remove the extension of a filename, returning only the name of the file.

Here are some examples of inputs and outputs:<

Answer 1

another no-regex way of doing it (the "oposite" of @Rahul's version, not using pop() to remove)

It doesn't require to refer to the variable twice, so it's easier to inline

filename.split('.').slice(0,-1).join()