Hi there, I have a website that has a bunch of small scripts, and each page loads its needed scripts. I want to modularize these scripts so it'd easy to manage all of them. What's the best approach to start this modularization process? Is require.js a good option? Is there anything else out there you guys could recommend? Also, there are no test cases in place for the current scripts. Should I start writing them in the process? PS: PHP is the backend language. Thanks!