From c442a914f160ba407d2f77cc5d970ef37d6c98f9 Mon Sep 17 00:00:00 2001
From: Garvit Khatri <garvitdelhi@gmail.com>
Date: Wed, 17 Jul 2024 13:08:42 +0100
Subject: [PATCH 1/5] Add encodeNonce util

---
 packages/permissionless/utils/encodeNonce.ts | 6 ++++++
 packages/permissionless/utils/index.ts       | 2 ++
 2 files changed, 8 insertions(+)
 create mode 100644 packages/permissionless/utils/encodeNonce.ts

diff --git a/packages/permissionless/utils/encodeNonce.ts b/packages/permissionless/utils/encodeNonce.ts
new file mode 100644
index 00000000..ce801f56
--- /dev/null
+++ b/packages/permissionless/utils/encodeNonce.ts
@@ -0,0 +1,6 @@
+export function encodeNonce({
+    key,
+    sequence
+}: { key: bigint; sequence: bigint }): bigint {
+    return (key << BigInt(64)) + sequence
+}
diff --git a/packages/permissionless/utils/index.ts b/packages/permissionless/utils/index.ts
index 99d5896c..ef3fee6a 100644
--- a/packages/permissionless/utils/index.ts
+++ b/packages/permissionless/utils/index.ts
@@ -23,6 +23,7 @@ export function parseAccount(account: Address | Account): Account {
         return { address: account, type: "json-rpc" }
     return account
 }
+import { encodeNonce } from "./encodeNonce"
 import {
     ENTRYPOINT_ADDRESS_V06,
     ENTRYPOINT_ADDRESS_V07,
@@ -47,6 +48,7 @@ export {
     getAddressFromInitCodeOrPaymasterAndData,
     getPackedUserOperation,
     getEntryPointVersion,
+    encodeNonce,
     ENTRYPOINT_ADDRESS_V06,
     ENTRYPOINT_ADDRESS_V07
 }

From c7585b4d41714126fef5933575b5702c7694f6ba Mon Sep 17 00:00:00 2001
From: Garvit Khatri <garvitdelhi@gmail.com>
Date: Wed, 17 Jul 2024 13:17:20 +0100
Subject: [PATCH 2/5] convert to proper size

---
 packages/permissionless/utils/encodeNonce.ts | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/permissionless/utils/encodeNonce.ts b/packages/permissionless/utils/encodeNonce.ts
index ce801f56..89387fa5 100644
--- a/packages/permissionless/utils/encodeNonce.ts
+++ b/packages/permissionless/utils/encodeNonce.ts
@@ -1,6 +1,8 @@
-export function encodeNonce({
-    key,
-    sequence
-}: { key: bigint; sequence: bigint }): bigint {
+import { toHex } from "viem"
+
+export function encodeNonce(args: { key: bigint; sequence: bigint }): bigint {
+    const key = BigInt(toHex(args.key, { size: 24 }))
+    const sequence = BigInt(toHex(args.sequence, { size: 8 }))
+
     return (key << BigInt(64)) + sequence
 }

From cc5a5c28f8aaa3b6fe63a69c72777fd32dd8bd43 Mon Sep 17 00:00:00 2001
From: Garvit Khatri <garvitdelhi@gmail.com>
Date: Wed, 17 Jul 2024 13:27:23 +0100
Subject: [PATCH 3/5] Add tests

---
 .../permissionless/utils/encodeNonce.test.ts  | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 packages/permissionless/utils/encodeNonce.test.ts

diff --git a/packages/permissionless/utils/encodeNonce.test.ts b/packages/permissionless/utils/encodeNonce.test.ts
new file mode 100644
index 00000000..93571042
--- /dev/null
+++ b/packages/permissionless/utils/encodeNonce.test.ts
@@ -0,0 +1,38 @@
+import { toHex } from "viem"
+import { describe, expect, test } from "vitest"
+import { encodeNonce } from "../utils"
+
+describe("encodeNonce", () => {
+    test("should encode key and sequence correctly", async () => {
+        const key = 123456789012345678901234n
+        const sequence = 9876543210n
+        const expectedKey = BigInt(toHex(key, { size: 24 }))
+        const expectedSequence = BigInt(toHex(sequence, { size: 8 }))
+
+        const result = encodeNonce({ key, sequence })
+
+        expect(result).toBe((expectedKey << BigInt(64)) + expectedSequence)
+    })
+
+    test("should handle zero values correctly", () => {
+        const key = BigInt(0)
+        const sequence = BigInt(0)
+        const expectedKey = BigInt(toHex(key, { size: 24 }))
+        const expectedSequence = BigInt(toHex(sequence, { size: 8 }))
+
+        const result = encodeNonce({ key, sequence })
+
+        expect(result).toBe((expectedKey << BigInt(64)) + expectedSequence)
+    })
+
+    test("should handle large values correctly", () => {
+        const key = BigInt("0xFFFFFFFFFFFFFFFFFFFFFFFF")
+        const sequence = BigInt("0xFFFFFFFF")
+        const expectedKey = BigInt(toHex(key, { size: 24 }))
+        const expectedSequence = BigInt(toHex(sequence, { size: 8 }))
+
+        const result = encodeNonce({ key, sequence })
+
+        expect(result).toBe((expectedKey << BigInt(64)) + expectedSequence)
+    })
+})

From f0536c3d05c0a88426c0726eceb8e33abb2ba97e Mon Sep 17 00:00:00 2001
From: Garvit Khatri <garvitdelhi@gmail.com>
Date: Wed, 17 Jul 2024 13:29:12 +0100
Subject: [PATCH 4/5] use proper imports

---
 packages/permissionless/utils/encodeNonce.test.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/permissionless/utils/encodeNonce.test.ts b/packages/permissionless/utils/encodeNonce.test.ts
index 93571042..f3214f2e 100644
--- a/packages/permissionless/utils/encodeNonce.test.ts
+++ b/packages/permissionless/utils/encodeNonce.test.ts
@@ -1,6 +1,6 @@
+import { encodeNonce } from "permissionless/utils"
 import { toHex } from "viem"
 import { describe, expect, test } from "vitest"
-import { encodeNonce } from "../utils"
 
 describe("encodeNonce", () => {
     test("should encode key and sequence correctly", async () => {

From be1c3dede45bdfbffe168735cbd48fd967684818 Mon Sep 17 00:00:00 2001
From: Garvit Khatri <garvitdelhi@gmail.com>
Date: Wed, 17 Jul 2024 13:31:16 +0100
Subject: [PATCH 5/5] Add changeset

---
 .changeset/strange-vans-sit.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/strange-vans-sit.md

diff --git a/.changeset/strange-vans-sit.md b/.changeset/strange-vans-sit.md
new file mode 100644
index 00000000..483011fe
--- /dev/null
+++ b/.changeset/strange-vans-sit.md
@@ -0,0 +1,5 @@
+---
+"permissionless": patch
+---
+
+Added encodeNonce util function