feat: lazy load rpc

Author: kanvgupta

src/config/getClient.ts

@@ -4,12 +4,15 @@ import { Chain, createPublicClient, http, PublicClient } from "viem";
 config();
 
 export function getClient(chain: Chain): PublicClient {
-  const rpcUrl = process.env[`RPC_URL_${chain.id}`];
-  if (!rpcUrl) {
-    throw new Error(`RPC_URL_${chain.id} is not set`);
-  }
+  // Use a lazy transport that only resolves the RPC URL when actually making requests
   return createPublicClient({
     chain,
-    transport: http(rpcUrl),
+    transport: http(() => {
+      const rpcUrl = process.env[`RPC_URL_${chain.id}`];
+      if (!rpcUrl) {
+        throw new Error(`RPC_URL_${chain.id} is not set`);
+      }
+      return rpcUrl;
+    }),
   });
 }