handleLinksToDetails.js

(function handleLinksToDetails() {
  var openBasedOnHash
  (openBasedOnHash = function openBasedOnHash() {
    const hash = window.location.hash;
    if (hash.length > 1) {
      const element = document.getElementById(hash.substr(1))
      if (element instanceof HTMLDetailsElement && element.open === false) {
        element.open = true
      }
    }
  })()
  window.addEventListener('hashchange', openBasedOnHash, false)
}())