let callbackQueue = [];
let toCheckList = [];

function loop(){
     const completedCalls = toCheckList.filter(promise => promise.state !== 'pending');
     callbackQueue.push(...completedCalls);
     toCheckList = toCheckList.filter(promise => promise.state === 'pending');

    callBackQueue.forEach(promise => promise.callThenMethods());
    callBackQueue = [];
}