prepdata.js

function prepData(data) {
    let out = [];
    Object.keys(data).forEach(function(k) {
        let o = data[k];
        let variants = [];
        let first, latest;
        let dist = o.distribution;
        let total = 0;

        Object.keys(o.count).forEach(function(c) {
            total += Number(o.count[c]);
        });

        Object.keys(o.titles).forEach(function(v) {
            first = first ? first : o.first[v];
            latest = latest ? latest : o.last[v];
            if(o.first[v] < first) first = o.first[v];
            if(o.last[v] > latest) latest = o.last[v];
            let variant = {};
            variant.name = v;
            variant.label = o.titles[v];
            variant.first = o.first[v];
            variant.latest = o.last[v];
            variant.count = o.count[v] || 0;
            variants.push(variant);
        });

        out.push({
            id : k,
            name : k,
            variants : variants,
            first : first,
            latest : latest,
            total : total,
            dist : dist

        });
    });
    return out;
};