⚡ Bolt: [performance improvement] Memoize IconifyIcon Lookups

.jules/bolt.md

@@ -0,0 +1,4 @@
+
+## 2024-05-25 - Iconify Object Lookup Memoization
+**Learning:** In the client application, the `IconifyIcon` wrapper component dynamically searches through massive JSON objects (`@iconify-json/*`) inside `getIconData()` for every rendered icon if caching is not implemented. Because the app uses icons heavily in layouts and UI components, omitting an upfront string-to-data cache causes repeated $O(N)$ lookup costs over thousands of keys that synchronously block the main thread.
+**Action:** Always verify that high-frequency UI components, especially those decoding layout icons from massive dictionaries, memoize their lookup results using an $O(1)$ structure (like a `Map`) to prevent severe cascading render delays.

client/src/components/base/IconifyIcon.tsx

@@ -33,18 +33,33 @@ const iconSets: Record<string, IconifyJSON> = {
   "mdi-light": mdiLightIcons,
 };
 
+const iconCache = new Map<string, any>();
+
 const iconData = (icon: string) => {
+  if (iconCache.has(icon)) {
+    return iconCache.get(icon);
+  }
+
   const [prefix, name] = icon.includes(":") ? icon.split(":") : ["", icon];
 
+  let data;
   if (prefix && iconSets[prefix]) {
-    const data = getIconData(iconSets[prefix], name);
-    if (data) return data;
+    data = getIconData(iconSets[prefix], name);
   }
 
-  for (const [_, icons] of Object.entries(iconSets)) {
-    const data = getIconData(icons, name);
-    if (data) return data;
+  if (!data) {
+    for (const [_, icons] of Object.entries(iconSets)) {
+      const foundData = getIconData(icons, name);
+      if (foundData) {
+        data = foundData;
+        break;
+      }
+    }
   }
+
+  iconCache.set(icon, data);
+
+  return data;
 };
 
 const IconifyIcon = ({