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fix(performance): lazy loading, dns-prefetch, and chunk splitting #422

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fix(performance): lazy loading, dns-prefetch, and chunk splitting #422

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ad55ae2
fix(performance): lazy loading, dns-prefetch, and vendor chunk splitting
gabitoesmiapodo Mar 23, 2026
ba8c91b
fix(performance): add react-dom/client to vendor-react chunk
gabitoesmiapodo Mar 23, 2026
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4 changes: 4 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,10 @@
<link rel="apple-touch-icon" sizes="180x180" href="/favicon/apple-touch-icon.png" />
<meta name="apple-mobile-web-app-title" content="dAppBooster" />
<link crossorigin="use-credentials" href="/favicon/site.webmanifest" rel="manifest" />
<!-- DNS prefetch for blockchain RPC endpoints -->
<link rel="dns-prefetch" href="https://eth.llamarpc.com" />
<link rel="dns-prefetch" href="https://cloudflare-eth.com" />
<link rel="dns-prefetch" href="https://gateway.tenderly.co" />
Comment on lines +34 to +37
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Copilot AI Mar 23, 2026

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These dns-prefetch hints are hard-coded to specific public RPC hosts, but the app’s actual RPC endpoints are configured via PUBLIC_RPC_* env vars (see src/lib/networks.config.ts). As-is, this may prefetch domains that aren’t used (unnecessary DNS leakage + wasted work) and may miss the domains that are used in a given deployment. Suggest either removing these hints or generating them from the configured RPC URLs during build/deploy (so they always match the active RPC hosts).

Suggested change
<!-- DNS prefetch for blockchain RPC endpoints -->
<link rel="dns-prefetch" href="https://eth.llamarpc.com" />
<link rel="dns-prefetch" href="https://cloudflare-eth.com" />
<link rel="dns-prefetch" href="https://gateway.tenderly.co" />

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@gabitoesmiapodo gabitoesmiapodo Mar 24, 2026

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Not removing. The fallback RPCs (llamarpc, cloudflare, etc.) are the wagmi default public providers — for any deployment that doesn't configure custom RPCs they are the actual endpoints used. The hints are best-effort and cause no harm when a custom RPC is configured.

<!-- Fonts -->
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
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1 change: 1 addition & 0 deletions src/components/sharedComponents/Avatar.tsx
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Expand Up @@ -54,6 +54,7 @@ const Avatar: FC<AvatarProps> = ({
<img
alt={ensName ?? address}
height="100%"
loading="lazy"
src={ensImage}
width="100%"
/>
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1 change: 1 addition & 0 deletions src/components/sharedComponents/TokenLogo.tsx
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Expand Up @@ -101,6 +101,7 @@ const TokenLogo: FC<TokenLogoProps> = ({ size = 24, token }) => {
<img
alt={token.name}
height={`${size}`}
loading="lazy"
onError={() => setHasError(true)}
src={getSrc(logoURI)}
width={`${size}`}
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13 changes: 13 additions & 0 deletions vite.config.ts
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Expand Up @@ -17,6 +17,19 @@ export default defineConfig({
hostname: 'https://dappbooster.dev',
}),
],
build: {
rollupOptions: {
output: {
manualChunks: {
'vendor-react': ['react', 'react-dom', 'react-dom/client'],
'vendor-wagmi': ['wagmi', 'viem'],
'vendor-tanstack': ['@tanstack/react-query', '@tanstack/react-router'],
'vendor-chakra': ['@chakra-ui/react'],
'vendor-web3': ['@reown/appkit', '@reown/appkit-adapter-wagmi'],
},
},
},
},
envPrefix: 'PUBLIC_',
resolve: {
alias: {
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