const levelrunner = new (require('levelrunner')).Base(
    ()=>{
       // do something before;
    },
    ()=>{
       // do something after; 
    },
    100 // numberOfLevels
);

levelrunner.add(
    function(){
        //do something
    },
    runlevel,
    name
);

window.onload = levelrunner.run;

levelrunner.run();