Counting open bugs inactive over 1, 2, 4, and 10 years in Bugzilla

count-open.js

function countOpen(period, last, total) {
   fetch(`https://bugzilla.mozilla.org/rest/bug?include_fields=id,summary,status&f1=days_elapsed&f2=bug_id&limit=0&o1=greaterthan&o2=greaterthan&product=Core&product=External%20Software%20Affecting%20Firefox&product=Firefox&product=Firefox%20for%20Android&product=Firefox%20for%20iOS&product=NSPR&product=NSS&product=Toolkit&resolution=---&v1=${period}&v2=${last}`)
      .then(res => { return res.json() })
      .then(body => {
        var found = body.bugs.length;
        total += found;
        if (found > 9999) {
          body.bugs.sort((a, b) => { a.id - b.id; });
          last = body.bugs[found - 1].id;
          console.log(`\t\tStill counting, running total is ${total} last is: ${last}.`)
          countOpen(period, last, total);
        } else {
          console.log(`Found ${total} open bugs for ${period} days.`)
        }
      })
}

countOpen(365, 0, 0);
countOpen(365*2, 0, 0);
countOpen(365*4, 0, 0);
countOpen(365*10, 0, 0);