I want to calculate the average of an array consisting of nested objects. Now the problem is that what I have now is extremely hardcoded but also not dependent on the depth of the array. Imagine the exampleArray also got two new keys under the each course called "midterm" and "fullterm" forexample where they all consisted of age 15-17 than my code will stop working. I am pulling from a API that has different depths on the nested objects. Is there a way to make this work not depending on hardcoding like it is now?

const courses = ["math", "english", "geography"]

const exampleArray = [{
    name: "Tim",
    class: "C",
    value: { //key is age and key is percentage on test he had at that age
      math: {
        "15": 46,
        "16": 49,
        "17": 97
      },
      english: {
        "15": 21,
        "16": 20,
        "17": 0
      },
      geography: {
        "15": 96,
        "16": 31,
        "17": 88
      }
    }
  },
  {
    name: "Jack",
    class: "C",
    value: { //key is age and key is percentage on test he had at that age
      math: {
        "15": 49,
        "16": 15,
        "17": 96
      },
      english: {
        "15": 21,
        "16": 20,
        "17": 56
      },
      geography: {
        "15": 0,
        "16": 38,
        "17": 77
      }
    }
  },
  {
    name: "Catherine",
    class: "C",
    value: {
      math: { //key is age and key is percentage on test he had at that age
        "15": 44,
        "16": 19,
        "17": 93
      },
      english: {
        "15": 0,
        "16": 28,
        "17": 59
      },
      geography: {
        "15": 14,
        "16": 18,
        "17": 27
      }
    }
  }
]

const courseArray = Object.keys(exampleArray[0].value)
const course = [courseArray[0]]
const ageArray = Object.keys(exampleArray[0].value[course]);

function CalcAvg(course, ageArray) {
  const emptyObject = {}
  ageArray.map((age) => {
    const val =(exampleArray.map(function(obj) {
          return obj.value[course][age]
        })
        .reduce(function(a, b) {
          return a + b
        }) / exampleArray.length)
    emptyObject[age] = val
  })
  return emptyObject
}
const testObject = {Class:"C",value:{}}

courseArray.map((course) => {
  testObject["value"][course] = CalcAvg(course, ageArray)
})
console.log(testObject)