Update chain stack type check

Author: kumaryash90

packages/thirdweb/src/chains/types.ts

@@ -82,6 +82,7 @@ export type ChainMetadata = {
     type: string;
     bridges?: Readonly<Array<{ url: string }>>;
   };
+  stackType: string;
 };
 
 /**

packages/thirdweb/src/utils/any-evm/zksync/isZkSyncChain.ts

@@ -1,5 +1,5 @@
+import { getChainMetadata } from "src/chains/utils.js";
 import type { Chain } from "../../../chains/types.js";
-import { withCache } from "../../promise/withCache.js";
 
 export async function isZkSyncChain(chain: Chain) {
   if (chain.id === 1337 || chain.id === 31337) {
@@ -20,28 +20,10 @@ export async function isZkSyncChain(chain: Chain) {
 
   // fallback to checking the stack on rpc
   try {
-    const stack = await getChainStack(chain.id);
-    return stack === "zksync-stack";
+    const chainMetadata = await getChainMetadata(chain);
+    return chainMetadata.stackType === "zksync-stack";
   } catch {
     // If the network check fails, assume it's not a ZkSync chain
     return false;
   }
 }
-
-async function getChainStack(chainId: number): Promise<string> {
-  return withCache(
-    async () => {
-      const res = await fetch(`https://${chainId}.rpc.thirdweb.com/stack`);
-
-      if (!res.ok) {
-        res.body?.cancel();
-        throw new Error(`Error fetching stack for ${chainId}`);
-      }
-
-      const data = await res.json();
-
-      return data.stack;
-    },
-    { cacheKey: `stack:${chainId}`, cacheTime: 24 * 60 * 60 * 1000 },
-  );
-}