Open dev tools Turn debug_developer off Open any page in Moodle Confirm that the first JS loaded is the rollup including : moodlesimple; and; mcore Confirm that they both have -min.js in the filename Confirm that the entire file content is minified Turn the debug level up to debug_developer but leave yuicomboloading enabled Refresh the page Confirm that the moodlesimple filename is neither -min nor -debug (moodlesimple.js) is in the request Confirm that the mcore-debug.js is used in the request Confirm that the file content is not minified Confirm the existence of Y.log in the content Disable yuicomboloading Refresh the page Confirm that the moodlesimple filename is neither -min nor -debug (moodlesimple.js) is in the request Confirm that the mcore-debug.js is used in the request Confirm that the file content is not minified Confirm the existence of Y.log in the content of mcore, but not moodlesimple