Group by key and summary value from Array in Javascript

summaryArr.js

var instagram = [{
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 10,
            "unit": "GB"
        }
    },
    {
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 20,
            "unit": "GB"
        }
    },
    {
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 30,
            "unit": "GB"
        }
    },
    {
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 6.5,
            "unit": "GB"
        }
    },
    {
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 5,
            "unit": "GB"
        }
    },
    {
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 6,
            "unit": "GB"
        }
    },
    {
        "name": "Instagram",
        "icon": "https://example.com/instagram.jpg",
        "quota": {
            "quota": 11,
            "unit": "GB"
        }
    },
]

groupBy = (array, key) => {
    // Return the end result
    return array.reduce((result, currentValue) => {
        // If an array already present for key, push it to the array. Else create an array and push the object
        (result[currentValue[key]] = result[currentValue[key]] || []).push(
            currentValue
        );
        // Return the current iteration `result` value, this will be taken as next iteration `result` value and accumulate
        return result;
    }, {}); // empty object is the initial value for result object
};

let _groupBy = groupBy(instagram, "name");
let items = Object.keys(_groupBy);

let obj = {
    name: items,
    attr: _groupBy
};

// console.log(_groupBy);

let apps = [];
let sumQuota = 0;
obj.name.map((value, index) => {
    let tempAttr = obj.attr[value];
    let tempApps = [];

    tempAttr.map((val, key) => {
        sumQuota = sumQuota + val.quota.quota;
    });

    tempApps['name'] = obj.name[index];
    tempApps['quota'] = sumQuota;

    apps.push(tempApps);
});

console.log(apps);