const activityLoading = {

  topicsForClassCourse: true,

  b: false,

  c: false,

  d: true,

  e: false

}

​

 const loadingSome = () => {

      const local = [ "topicsForClassCourse", "timetableForClass" ];

      const entries = Object.entries(activityLoading)

      const reducer = (acc, current) => {

        if(local.includes(current[0])) {

          return acc

        }

        return current[1] || acc;

      }

      const result = entries.reduce(reducer, false)

      console.log(result)

    }

​

loadingSome();