compute the json object of each item in the shopping cart using the Ids

computeStats.js

    const computeStats = () => {
        if (cart.items.length !== 0) {
            var ids = cart.items.map(item => item.id); 
            let isUnique = (value, index, self) => self.indexOf(value) === index;  
            let distinct = ids.filter(isUnique); 

            distinct.forEach(id => {
                stats.push({ 
                  "id": id, 
                  'count': cart.items.filter(o => o.id === id).length, 
                  'clicked': (id === curId) ? 'true' : 'false' 
                });
            });
        }
        return stats.sort((a, b) => b.count - a.count);
    }

I modelled a shopping application, and in building the shopping cart,

1. i needed to keep track of the count of each item being selected (frequency)
2. i had to also ensure the item with the highest count was always always first at the top
3. i wanted the last chosen item to be tracked (boldened) in the entire
4. it should return a JSON object to render the component with.

i also used it to calculate the total of the items.. the image below