code: function(dest, src) {
  		let destFilename = "";
  		if (src.endsWith(".controller.js")) {
  			destFilename = dest + src.replace(/\.controller\.js$/, "-dbg.controller.js");
  		} else if (src.endsWith(".js")) {
  			destFilename = dest + src.replace(/\.js$/, "-dbg.js");
  		} else {
  			destFilename = dest + src;
  		}
  		console.log(src + " ==>" + destFilename + "(dest = " + dest + ", src = " + src + ")");
  		return destFilename;
  	}
docs: Rename JavaScript files, all others stay as they are. Examples:
  App.controller.js ==> App-dbg.controller.js
  Component.js ==> Component-dbg.js
  
  @param {string} dest the destination folder
  @param {string} src the filename
  @returns {string }the new file name for js files