How to convert array with nested object to object?

I am newbie in JS, I will appreciate any help

I have response from server like this:

let arr = [
{
    key: "name",
    propertyValue: "Test Name",
},
{
    key: "middleName",
    propertyValue: null,
},
{   
    key: "university.isGraduated",
    propertyValue: true,
},
{   
    key: "university.speciality",
    propertyValue: "Computer Science", 
},
{   
    key: "university.country.code",
    propertyValue: "PL"
}];

And I need to convert it to object:

let student = {
name: 'Test Name',
middleName: null,
university: {
    isGraduated: true,
    speciality: 'Computer Science',
    country: {
        code: 'PL'
    }
}

}

Does anyone have any ideas how to do this?

>Solution :

You can use a combination of reduce and split to build up the object.

let arr = [
{
    key: "name",
    propertyValue: "Test Name",
},
{
    key: "middleName",
    propertyValue: null,
},
{   
    key: "university.isGraduated",
    propertyValue: true,
},
{   
    key: "university.speciality",
    propertyValue: "Computer Science", 
},
{   
    key: "university.country.code",
    propertyValue: "PL"
}];

const result = arr.reduce ( (acc,i) => {
  const keys = i.key.split(".");
  let pointer = acc;
  for(let i=0;i<keys.length-1;i++)
    pointer = pointer[keys[i]] || (pointer[keys[i]] = {});
  pointer[keys[keys.length-1]] = i.propertyValue;
  return acc;
},{});

console.log(result);