From 8191d5e1efdf50353234f7f4bee99b8ecd717a0a Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Tue, 6 Jun 2023 20:58:26 -0700
Subject: [PATCH] fix darkmode script load

---
 quartz/components/Darkmode.tsx               |  3 ++
 quartz/components/scripts/darkmode.inline.ts | 34 +++++++++-----------
 quartz/plugins/emitters/contentPage.tsx      |  4 +--
 quartz/styles/syntax.scss                    |  2 +-
 4 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/quartz/components/Darkmode.tsx b/quartz/components/Darkmode.tsx
index 0161e0ad..ae6788cb 100644
--- a/quartz/components/Darkmode.tsx
+++ b/quartz/components/Darkmode.tsx
@@ -1,3 +1,6 @@
+// @ts-ignore: this is safe, we don't want to actually make darkmode.inline.ts a module as 
+// modules are automatically deferred and we don't want that to happen for critical beforeDOMLoads
+// see: https://v8.dev/features/modules#defer
 import darkmodeScript from "./scripts/darkmode.inline"
 import styles from '../styles/darkmode.scss'
 
diff --git a/quartz/components/scripts/darkmode.inline.ts b/quartz/components/scripts/darkmode.inline.ts
index d2b6e064..f00a8733 100644
--- a/quartz/components/scripts/darkmode.inline.ts
+++ b/quartz/components/scripts/darkmode.inline.ts
@@ -1,25 +1,23 @@
-export default "Darkmode"
+const userPref = window.matchMedia('(prefers-color-scheme: light)').matches ? 'light' : 'dark'
+const currentTheme = localStorage.getItem('theme') ?? userPref
+document.documentElement.setAttribute('saved-theme', currentTheme)
 
-const currentTheme = localStorage.getItem("theme")
-const theme =
-  currentTheme ??
-  (window.matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark")
-
-document.documentElement.setAttribute("saved-theme", theme)
-
-window.addEventListener("DOMContentLoaded", () => {
-  const toggleSwitch = document.querySelector("#darkmode-toggle") as HTMLInputElement
-  toggleSwitch.addEventListener("change", (e: any) => {
+window.addEventListener('DOMContentLoaded', () => {
+  const switchTheme = (e: any) => {
     if (e.target.checked) {
-      document.documentElement.setAttribute("saved-theme", "dark")
-      localStorage.setItem("theme", "dark")
-    } else {
-      document.documentElement.setAttribute("saved-theme", "light")
-      localStorage.setItem("theme", "light")
+      document.documentElement.setAttribute('saved-theme', 'dark')
+      localStorage.setItem('theme', 'dark')
     }
-  })
+    else {
+      document.documentElement.setAttribute('saved-theme', 'light')
+      localStorage.setItem('theme', 'light')
+    }
+  }
 
-  if (theme === "dark") {
+  // Darkmode toggle
+  const toggleSwitch = document.querySelector('#darkmode-toggle') as HTMLInputElement
+  toggleSwitch.addEventListener('change', switchTheme, false)
+  if (currentTheme === 'dark') {
     toggleSwitch.checked = true
   }
 })
diff --git a/quartz/plugins/emitters/contentPage.tsx b/quartz/plugins/emitters/contentPage.tsx
index 9cca0af1..61ddcfbd 100644
--- a/quartz/plugins/emitters/contentPage.tsx
+++ b/quartz/plugins/emitters/contentPage.tsx
@@ -40,9 +40,9 @@ export class ContentPage extends QuartzEmitterPlugin {
       const pageResources: StaticResources = {
         css: [baseDir + "/index.css", ...resources.css,],
         js: [
-          { src: baseDir + "/prescript.js", loadTime: "beforeDOMReady", type: 'module' },
+          { src: baseDir + "/prescript.js", loadTime: "beforeDOMReady" },
           ...resources.js,
-          { src: baseDir + "/postscript.js", loadTime: "afterDOMReady", type: 'module' }
+          { src: baseDir + "/postscript.js", loadTime: "afterDOMReady" }
         ]
       }
 
diff --git a/quartz/styles/syntax.scss b/quartz/styles/syntax.scss
index c53904aa..623ee6f4 100644
--- a/quartz/styles/syntax.scss
+++ b/quartz/styles/syntax.scss
@@ -14,7 +14,7 @@
 }
 
 // npx convert-sh-theme https://raw.githubusercontent.com/shikijs/shiki/main/packages/shiki/themes/github-dark.json
-:root[saved-theme="dark"] {
+[saved-theme="dark"] {
   --shiki-color-text: #e1e4e8 !important;
   --shiki-color-background: #24292e !important;
   --shiki-token-constant: #79b8ff !important;