scroll-tracking-walkeros/dist/index.mjs

Custom scroll tracking used as an additional source for WalkerOS.

// src/functions.ts
var scrollMaximum = 0;
var prevScrollPercent = null;
function scrollReport() {
  const article = document.querySelector("#articlebody") || document.body;
  const articleLength = article.offsetHeight;
  const scrollDepth = window.scrollY || document.documentElement.scrollTop || document.body.scrollTop;
  let scrollPercent = Math.round(scrollDepth / articleLength * 100) / 100;
  if (scrollPercent < 1) {
    scrollMaximum = scrollPercent > scrollMaximum ? scrollPercent : scrollMaximum;
  } else {
    scrollMaximum = 1;
  }
  return { scrollPercent, scrollMaximum };
}
function initScrollTracking(callback) {
  function handleScroll() {
    const { scrollPercent, scrollMaximum: scrollMaximum2 } = scrollReport();
    if (scrollPercent !== prevScrollPercent) {
      callback({
        scrollPercent,
        scrollMaximum: scrollMaximum2,
        previousPercent: prevScrollPercent
      });
      prevScrollPercent = scrollPercent;
    }
  }
  window.addEventListener("scroll", handleScroll);
  return () => window.removeEventListener("scroll", handleScroll);
}
export {
  initScrollTracking,
  scrollReport
};