From dad0ae4e3f08288d1d9b36daa37f983e248507d1 Mon Sep 17 00:00:00 2001
From: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 16 Sep 2024 23:55:42 +0000
Subject: [PATCH] chore(deps-dev): bump @types/node from 22.5.4 to 22.5.5 (#1420)

---
 quartz/components/scripts/toc.inline.ts |   19 +++++++++++++------
 1 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/quartz/components/scripts/toc.inline.ts b/quartz/components/scripts/toc.inline.ts
index d6cd50a..acc81b2 100644
--- a/quartz/components/scripts/toc.inline.ts
+++ b/quartz/components/scripts/toc.inline.ts
@@ -1,5 +1,5 @@
 const bufferPx = 150
-const observer = new IntersectionObserver(entries => {
+const observer = new IntersectionObserver((entries) => {
   for (const entry of entries) {
     const slug = entry.target.id
     const tocEntryElement = document.querySelector(`a[data-for="${slug}"]`)
@@ -16,7 +16,12 @@
 
 function toggleToc(this: HTMLElement) {
   this.classList.toggle("collapsed")
-  const content = this.nextElementSibling as HTMLElement
+  this.setAttribute(
+    "aria-expanded",
+    this.getAttribute("aria-expanded") === "true" ? "false" : "true",
+  )
+  const content = this.nextElementSibling as HTMLElement | undefined
+  if (!content) return
   content.classList.toggle("collapsed")
   content.style.maxHeight = content.style.maxHeight === "0px" ? content.scrollHeight + "px" : "0px"
 }
@@ -24,10 +29,12 @@
 function setupToc() {
   const toc = document.getElementById("toc")
   if (toc) {
-    const content = toc.nextElementSibling as HTMLElement
-    content.style.maxHeight = content.scrollHeight + "px"
-    toc.removeEventListener("click", toggleToc)
+    const collapsed = toc.classList.contains("collapsed")
+    const content = toc.nextElementSibling as HTMLElement | undefined
+    if (!content) return
+    content.style.maxHeight = collapsed ? "0px" : content.scrollHeight + "px"
     toc.addEventListener("click", toggleToc)
+    window.addCleanup(() => toc.removeEventListener("click", toggleToc))
   }
 }
 
@@ -38,5 +45,5 @@
   // update toc entry highlighting
   observer.disconnect()
   const headers = document.querySelectorAll("h1[id], h2[id], h3[id], h4[id], h5[id], h6[id]")
-  headers.forEach(header => observer.observe(header))
+  headers.forEach((header) => observer.observe(header))
 })

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