We've reached a point where most key features are in place. it's time to do a proper code-cleanup session. Today's topic is all about maintaining good coding practice, code organization and modularity of the codebase.
Today's focus is the file renderer.js and code relating to that. You've already made a thorough analysis of it and assessed it and other related code.
Your suggested improvements are as follows:

I've reviewed the renderer.js file and related code. Here's my assessment and suggestions for improvement: