shoelace/docs/assets/scripts/turbo.js

import * as Turbo from 'https://cdn.jsdelivr.net/npm/@hotwired/turbo@7.3.0/+esm'

;(() => {
  if (!window.scrollPositions) {
    window.scrollPositions = {};
  }

  function preserveScroll () {
    document.querySelectorAll("[data-preserve-scroll").forEach((element) => {
      scrollPositions[element.id] = element.scrollTop;
    })
  }

  function restoreScroll (event) {
    document.querySelectorAll("[data-preserve-scroll").forEach((element) => {
      element.scrollTop = scrollPositions[element.id];
    })

    if (event.detail && event.detail.newBody) {
      event.detail.newBody.querySelectorAll("[data-preserve-scroll").forEach((element) => {
        element.scrollTop = scrollPositions[element.id];
      })
    }
  }

  window.addEventListener("turbo:before-cache", preserveScroll)
  window.addEventListener("turbo:before-render", restoreScroll)
  window.addEventListener("turbo:render", restoreScroll)
})()