Make account info load wayyyy faster on Profile page

src/components/account-sheet.jsx

@@ -1,6 +1,8 @@
+import { useEffect } from 'preact/hooks';
 import { useHotkeys } from 'react-hotkeys-hook';
 
 import { api } from '../utils/api';
+import states from '../utils/states';
 
 import AccountInfo from './account-info';
 
@@ -10,6 +12,12 @@ function AccountSheet({ account, instance: propInstance, onClose }) {
 
   const escRef = useHotkeys('esc', onClose, [onClose]);
 
+  useEffect(() => {
+    if (!isString) {
+      states.accounts[`${account.id}@${instance}`] = account;
+    }
+  }, [account]);
+
   return (
     <div
       ref={escRef}

src/pages/account-statuses.jsx

@@ -74,18 +74,18 @@ function AccountStatuses() {
 
   const { displayName, acct, emojis } = account || {};
 
-  const TimelineStart = useMemo(
-    () => (
+  const TimelineStart = useMemo(() => {
+    const cachedAccount = snapStates.accounts[`${id}@${instance}`];
+    return (
       <AccountInfo
         instance={instance}
-        account={id}
+        account={cachedAccount || id}
         fetchAccount={() => masto.v1.accounts.fetch(id)}
         authenticated={authenticated}
         standalone
       />
-    ),
-    [id, instance, authenticated],
-  );
+    );
+  }, [id, instance, authenticated]);
 
   return (
     <Timeline

src/utils/states.js

@@ -27,6 +27,7 @@ const states = proxy({
   spoilers: {},
   scrollPositions: {},
   unfurledLinks: {},
+  accounts: {},
   // Modals
   showCompose: false,
   showSettings: false,