From a37c7775e771afff1adf4ebcaf3e04570a683b78 Mon Sep 17 00:00:00 2001
From: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Date: Sun, 28 Apr 2024 04:04:38 +0000
Subject: [PATCH] chore(deps): bump preact-render-to-string from 6.4.0 to 6.4.2 (#1094)

---
 quartz/components/scripts/toc.inline.ts |   15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/quartz/components/scripts/toc.inline.ts b/quartz/components/scripts/toc.inline.ts
index d6cd50a..546859e 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 +16,8 @@
 
 function toggleToc(this: HTMLElement) {
   this.classList.toggle("collapsed")
-  const content = this.nextElementSibling as HTMLElement
+  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 +25,12 @@
 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 +41,5 @@
   // 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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