From 11230ec1ca772e2814ff05566391943753f70cc3 Mon Sep 17 00:00:00 2001
From: Mikhala <mikhala.kurtjak@immutable.com>
Date: Mon, 1 Jul 2024 09:24:16 +0800
Subject: [PATCH] add comments

---
 packages/passport/sdk/src/utils/string.ts       | 2 +-
 packages/passport/sdk/src/zkEvm/personalSign.ts | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/passport/sdk/src/utils/string.ts b/packages/passport/sdk/src/utils/string.ts
index 15a15acf48..77c3c50c1e 100644
--- a/packages/passport/sdk/src/utils/string.ts
+++ b/packages/passport/sdk/src/utils/string.ts
@@ -4,8 +4,8 @@ export const hexToString = async (hex: string) => {
   if (!hex) return hex;
 
   try {
+    // Ensures Buffer is available when using the browser bundle of the SDK
     if (typeof window !== 'undefined' && !window.Buffer) {
-      // Use dynamic import to load Buffer
       const bufferModule = await import('buffer');
       window.Buffer = bufferModule.Buffer;
     }
diff --git a/packages/passport/sdk/src/zkEvm/personalSign.ts b/packages/passport/sdk/src/zkEvm/personalSign.ts
index 369ad2b742..19aa5a722f 100644
--- a/packages/passport/sdk/src/zkEvm/personalSign.ts
+++ b/packages/passport/sdk/src/zkEvm/personalSign.ts
@@ -38,6 +38,7 @@ export const personalSign = async ({
     throw new JsonRpcError(RpcErrorCode.INVALID_PARAMS, 'personal_sign requires the signer to be the from address');
   }
 
+  // Convert message into a string if it's a hex
   const payload = await hexToString(message);
   const { chainId } = await rpcProvider.detectNetwork();
   flow.addEvent('endDetectNetwork');