Function getScreenRefreshRate

app/core/utils.js:1660–1691

(callback, runIndefinitely)

 */
// https://ourcodeworld.com/articles/read/1390/how-to-determine-the-screen-refresh-rate-in-hz-of-the-monitor-with-javascript-in-the-browser
const getScreenRefreshRate = function (callback, runIndefinitely) {
  let requestId = null
  let callbackTriggered = false
  if (window.requestAnimationFrame == null) { window.requestAnimationFrame = window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame }
  const DOMHighResTimeStampCollection = []

  const triggerAnimation = function (DOMHighResTimeStamp) {
    DOMHighResTimeStampCollection.unshift(DOMHighResTimeStamp)
    if (DOMHighResTimeStampCollection.length > 10) {
      const t0 = DOMHighResTimeStampCollection.pop()
      const fps = Math.floor((1000 * 10) / (DOMHighResTimeStamp - t0))
      if (!callbackTriggered) {
        callback.call(undefined, fps, DOMHighResTimeStampCollection)
      }
      if (runIndefinitely) {
        callbackTriggered = false
      } else {
        callbackTriggered = true
      }
    }
    requestId = window.requestAnimationFrame(triggerAnimation)
  }

  window.requestAnimationFrame(triggerAnimation)
  // Stop after half second if it shouldn't run indefinitely
  if (!runIndefinitely) {
    window.setTimeout(function () {
      window.cancelAnimationFrame(requestId)
      return requestId = null
    }, 500)
  }
}

const getProductUrl = function (product, url) {
  if ((product !== 'COCO') && (product !== 'OZ')) {