fix: dependent calls break gas estimation

.changeset/smooth-rings-kick.md

@@ -0,0 +1,5 @@
+---
+"burner-connector": patch
+---
+
+5792: Make calls sequentially to enable gas estimation for dependent calls

packages/burner-connector/src/burnerConnector/burner.ts

@@ -177,25 +177,25 @@ export const burner = ({ useSessionStorage = false, rpcUrls = {} }: BurnerConfig
           }
 
           // Execute calls sequentially for now
-          const requests = [];
-          let nonceIncrement = 0;
+          const hashes: `0x${string}`[] = [];
           for (const call of sendCallsParams.calls) {
             const request = await client.prepareTransactionRequest({
               account: burnerAccount,
               data: call.data as `0x${string}`,
               to: call.to as `0x${string}`,
               value: call.value ? hexToBigInt(call.value as `0x${string}`) : undefined,
             });
-            requests.push({
+            const hash = await client.sendTransaction({
               ...request,
               gas: (request.gas * GAS_MULTIPLIER) / 100n,
-              nonce: request.nonce + nonceIncrement,
             });
-            nonceIncrement++;
+            hashes.push(hash);
+            const receipt = await publicClient.waitForTransactionReceipt({ hash });
+            if (receipt.status !== "success") {
+              break;
+            }
           }
 
-          const hashes = await Promise.all(requests.map((request) => client.sendTransaction(request)));
-
           // Create a robust ID by concatenating transaction hashes, chain ID, and magic identifier
           const id = concat([
             ...hashes,