From b062bac5e77cd827d6059898cf5d9f8e6b74ff53 Mon Sep 17 00:00:00 2001
From: enitrat <msaug@protonmail.com>
Date: Fri, 1 Nov 2024 12:21:43 +0700
Subject: [PATCH 1/2] fix: kakarot invokeTransaction returndata type &
 multicall evm encoding

---
 packages/kakarot/src/kakarot.ts | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/packages/kakarot/src/kakarot.ts b/packages/kakarot/src/kakarot.ts
index 0921e6dd..77d22374 100644
--- a/packages/kakarot/src/kakarot.ts
+++ b/packages/kakarot/src/kakarot.ts
@@ -392,7 +392,7 @@ export class KakarotConnector extends Connector {
       case "wallet_addInvokeTransaction": {
         if (!params) throw new Error("Params are missing");
         const { calls } = params as AddInvokeTransactionParameters;
-        return await provider.request({
+        const transaction_hash = await provider.request({
           method: "eth_sendTransaction",
           params: [
             {
@@ -402,6 +402,9 @@ export class KakarotConnector extends Connector {
             },
           ],
         });
+        return {
+          transaction_hash: transaction_hash,
+        };
       }
       case "wallet_signTypedData": {
         if (!params) throw new Error("Params are missing");
@@ -575,7 +578,7 @@ export class KakarotConnector extends Connector {
  */
 const prepareTransactionData = (calls: RequestCall[]) => {
   const encodedCalls = calls.map((call) => {
-    return encodeAbiParameters(
+    const encoded = encodeAbiParameters(
       [
         { type: "uint256", name: "contractAddress" },
         { type: "uint256", name: "selector" },
@@ -587,9 +590,10 @@ const prepareTransactionData = (calls: RequestCall[]) => {
         (call.calldata as string[]).map((data: string) => BigInt(data)),
       ],
     );
+    return encoded.slice(2); // Remove the '0x' prefix from each encoded call
   });
 
   const concatenatedCalls = encodedCalls.join("");
-  const callCount = toHex(calls.length, { size: 32 });
-  return `${callCount}${concatenatedCalls.slice(2)}` as `0x${string}`;
+  const callCount = toHex(calls.length, { size: 32 }).slice(2); // Remove the '0x' prefix from the call count
+  return `0x${callCount}${concatenatedCalls}` as `0x${string}`;
 };

From 23f109e32d07091993924f18a9253b12776c4319 Mon Sep 17 00:00:00 2001
From: enitrat <msaug@protonmail.com>
Date: Fri, 1 Nov 2024 12:22:01 +0700
Subject: [PATCH 2/2] Change files

---
 ...react-kakarot-35774e84-0f76-4f61-996a-76eba0d19258.json | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 change/@starknet-react-kakarot-35774e84-0f76-4f61-996a-76eba0d19258.json

diff --git a/change/@starknet-react-kakarot-35774e84-0f76-4f61-996a-76eba0d19258.json b/change/@starknet-react-kakarot-35774e84-0f76-4f61-996a-76eba0d19258.json
new file mode 100644
index 00000000..1ee0bfbc
--- /dev/null
+++ b/change/@starknet-react-kakarot-35774e84-0f76-4f61-996a-76eba0d19258.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "fix: kakarot invokeTransaction returndata type & multicall evm encoding",
+  "packageName": "@starknet-react/kakarot",
+  "email": "msaug@protonmail.com",
+  "dependentChangeType": "patch"
+}