From 1a51af85397283601db77ca61d5596b145e7f2cb Mon Sep 17 00:00:00 2001
From: Richard Moore <me@ricmoo.com>
Date: Thu, 25 Jul 2024 17:51:52 -0400
Subject: [PATCH] Prevent mutating transactions when signing (#4789).

---
 src.ts/wallet/base-wallet.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src.ts/wallet/base-wallet.ts b/src.ts/wallet/base-wallet.ts
index 4ef6bd7b82..21aae068cd 100644
--- a/src.ts/wallet/base-wallet.ts
+++ b/src.ts/wallet/base-wallet.ts
@@ -1,6 +1,6 @@
 import { getAddress, resolveAddress } from "../address/index.js";
 import { hashMessage, TypedDataEncoder } from "../hash/index.js";
-import { AbstractSigner } from "../providers/index.js";
+import { AbstractSigner, copyRequest } from "../providers/index.js";
 import { computeAddress, Transaction } from "../transaction/index.js";
 import {
     defineProperties, resolveProperties, assert, assertArgument
@@ -69,6 +69,7 @@ export class BaseWallet extends AbstractSigner {
     }
 
     async signTransaction(tx: TransactionRequest): Promise<string> {
+        tx = copyRequest(tx);
 
         // Replace any Addressable or ENS name with an address
         const { to, from } = await resolveProperties({