code: function readCodepointsFromFile(){
  			if (!o.codepointsFile) return {};
  			if (!fs.existsSync(o.codepointsFile)){
  				logger.verbose('Codepoints file not found');
  				return {};
  			}
  
  			var buffer = fs.readFileSync(o.codepointsFile);
  			return JSON.parse(buffer.toString());
  		}
docs: Gets the codepoints from the set filepath in o.codepointsFile