@yrobot/auto-scroll/build/index.es.js

This is a tool which makes scroll-container auto scroll to the bottom easy.

const h = (l, a) => {
  let n = -1 / 0, o, t = !1;
  return [
    (...f) => {
      if (t) return null;
      let r = n + a - Date.now();
      return clearTimeout(o), o = window.setTimeout(() => {
        n = Date.now(), l(...f);
      }, Math.max(0, r)), null;
    },
    () => {
      t = !0, clearTimeout(o);
    }
  ];
}, u = ({ threshold: l = 24, throttleTime: a = 100 } = {}) => {
  const n = {};
  let o = !1, t = -1 / 0;
  const [f] = h((r) => {
    const c = r.target;
    !o && c.scrollTop < t && (o = !0), o && c.scrollHeight - c.scrollTop - c.clientHeight <= l && (o = !1), t = c.scrollTop;
  }, a);
  return n.onMount = (r) => {
    t = r.scrollTop, r.addEventListener("scroll", f);
  }, n.onUnmount = (r) => {
    r.removeEventListener("scroll", f);
  }, n.escapeHook = () => o, n;
};
function v({
  throttleTime: l = 100,
  plugins: a = [],
  offset: n = 0,
  ...o
}) {
  const t = "container" in o ? o.container : document.querySelector(o.selector);
  if (t === null) throw new Error("Container element not found");
  const f = a.map((e) => {
    var s;
    return (s = e == null ? void 0 : e.onMount) == null ? void 0 : s.call(e, t);
  }).filter((e) => typeof e == "function"), r = () => a.find((e) => {
    var s;
    return ((s = e == null ? void 0 : e.escapeHook) == null ? void 0 : s.call(e, t)) === !0;
  }) ? !1 : (requestAnimationFrame(() => {
    t.scrollTo({
      top: t.scrollHeight - n
      // behavior: "smooth", // will effect escapeWhenUpPlugin user scroll up detection
    });
  }), !0), [c] = l > 0 ? h(r, l) : [r], i = new ResizeObserver(() => {
    c();
  }), d = new MutationObserver(() => {
    m(), c();
  }), m = () => {
    i.disconnect();
    for (const e of t.children)
      i.observe(e);
  };
  return m(), d.observe(t, {
    childList: !0
  }), () => {
    i.disconnect(), d.disconnect(), f.forEach((e) => e(t)), a.forEach((e) => {
      var s;
      return (s = e == null ? void 0 : e.onUnmount) == null ? void 0 : s.call(e, t);
    });
  };
}
export {
  v as default,
  u as escapeWhenUpPlugin
};