Using sloc in a NodeJS module: is it possible to search for all file extensions?

I'd like to do something like:
`var stats = sloc("nsure", "*");
for(i in sloc.keys){
    var k = sloc.keys[i];
    console.log(k + " : " + stats[k]);
}`
in a NodeJS application.

Using the CLI, it is possible to do it, simply using the following command (without specifying any file extension):

> sloc nsure

Thank you for your help 👍 