Add a final newline when compressing js files

We have several 3rd party products in js in our XPages application. These js files do not end the last line of code with newline. Consequently, when Use runtime optimized JavaScript is selected, the first line of file b.js is attached directly to the end of the last line of file a.js, giving results like
//# sourceMappingURL=socket.io.js.mapfunction myfunction() {

which then leads to interesting error messages in the browser.

Of course one could argue that we should start every js file with some comments, but in my humble opinion the Designer/Compiler should simply add a newline when compressing files if the last line doesn't end with a newline.