From 36a87de002c6b6ab8c72429b186c0660ccc88e92 Mon Sep 17 00:00:00 2001
From: Deepak Jangid <deepakjangid@bitgo.com>
Date: Fri, 5 Sep 2025 13:19:37 +0530
Subject: [PATCH] fix(abstract-eth): follow up updates from PR 6882

Ticket: COIN-5402
---
 modules/abstract-eth/src/lib/transactionBuilder.ts |  4 ++--
 modules/abstract-eth/src/lib/utils.ts              |  6 ++----
 modules/abstract-eth/test/unit/utils.ts            | 14 ++++++++------
 modules/sdk-coin-eth/test/resources/eth.ts         |  2 --
 4 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/modules/abstract-eth/src/lib/transactionBuilder.ts b/modules/abstract-eth/src/lib/transactionBuilder.ts
index 94ddb61252..064e7b7a09 100644
--- a/modules/abstract-eth/src/lib/transactionBuilder.ts
+++ b/modules/abstract-eth/src/lib/transactionBuilder.ts
@@ -248,7 +248,7 @@ export abstract class TransactionBuilder extends BaseTransactionBuilder {
       case TransactionType.FlushERC721:
         this.setContract(transactionJson.to);
         const erc721Data = decodeFlushERC721TokensData(transactionJson.data, transactionJson.to);
-        if (erc721Data.forwarderVersion >= 4) {
+        if (erc721Data.forwarderVersion === 4) {
           this.forwarderVersion(erc721Data.forwarderVersion);
         }
         this.forwarderAddress(erc721Data.forwarderAddress);
@@ -258,7 +258,7 @@ export abstract class TransactionBuilder extends BaseTransactionBuilder {
       case TransactionType.FlushERC1155:
         this.setContract(transactionJson.to);
         const erc1155Data = decodeFlushERC1155TokensData(transactionJson.data, transactionJson.to);
-        if (erc1155Data.forwarderVersion >= 4) {
+        if (erc1155Data.forwarderVersion === 4) {
           this.forwarderVersion(erc1155Data.forwarderVersion);
         }
         this.forwarderAddress(erc1155Data.forwarderAddress);
diff --git a/modules/abstract-eth/src/lib/utils.ts b/modules/abstract-eth/src/lib/utils.ts
index d25d6db53e..aaecc58522 100644
--- a/modules/abstract-eth/src/lib/utils.ts
+++ b/modules/abstract-eth/src/lib/utils.ts
@@ -259,7 +259,7 @@ export function decodeFlushERC721TokensData(
   forwarderAddress: string;
   tokenAddress: string;
   tokenId: string;
-  forwarderVersion: number;
+  forwarderVersion?: number;
 } {
   if (data.startsWith(flushERC721ForwarderTokensMethodIdV4)) {
     if (!to) {
@@ -284,7 +284,6 @@ export function decodeFlushERC721TokensData(
       forwarderAddress: addHexPrefix(forwarderAddress as string),
       tokenAddress: addHexPrefix(tokenAddress as string),
       tokenId: new BigNumber(bufferToHex(tokenId as Buffer)).toFixed(),
-      forwarderVersion: 0,
     };
   }
   throw new BuildTransactionError(`Invalid flush ERC721 bytecode: ${data}`);
@@ -332,7 +331,7 @@ export function decodeFlushERC1155TokensData(
   forwarderAddress: string;
   tokenAddress: string;
   tokenId: string;
-  forwarderVersion: number;
+  forwarderVersion?: number;
 } {
   if (data.startsWith(flushERC1155ForwarderTokensMethodIdV4)) {
     if (!to) {
@@ -357,7 +356,6 @@ export function decodeFlushERC1155TokensData(
       forwarderAddress: addHexPrefix(forwarderAddress as string),
       tokenAddress: addHexPrefix(tokenAddress as string),
       tokenId: new BigNumber(bufferToHex(tokenId as Buffer)).toFixed(),
-      forwarderVersion: 0,
     };
   }
   throw new BuildTransactionError(`Invalid flush ERC1155 bytecode: ${data}`);
diff --git a/modules/abstract-eth/test/unit/utils.ts b/modules/abstract-eth/test/unit/utils.ts
index 890914aa1d..53ac91fe1b 100644
--- a/modules/abstract-eth/test/unit/utils.ts
+++ b/modules/abstract-eth/test/unit/utils.ts
@@ -39,7 +39,7 @@ describe('Abstract ETH Utils', () => {
       const forwarderAddress = '0x8f977e912ef500548a0c3be6ddde9899f1199b81';
       const tokenAddress = '0xdf7decb1baa8f529f0c8982cbb4be50357195299';
       const tokenId = '12345';
-      const forwarderVersion = 0;
+      const forwarderVersion = 2;
 
       const encoded = flushERC721TokensData(forwarderAddress, tokenAddress, tokenId, forwarderVersion);
       const decoded = decodeFlushERC721TokensData(encoded);
@@ -48,7 +48,7 @@ describe('Abstract ETH Utils', () => {
       decoded.forwarderAddress.toLowerCase().should.equal(forwarderAddress.toLowerCase());
       decoded.tokenAddress.toLowerCase().should.equal(tokenAddress.toLowerCase());
       decoded.tokenId.should.equal(tokenId);
-      decoded.forwarderVersion.should.equal(0);
+      should.not.exist(decoded.forwarderVersion);
     });
 
     it('should decode flush ERC721 data correctly for v4+', () => {
@@ -64,7 +64,8 @@ describe('Abstract ETH Utils', () => {
       decoded.forwarderAddress.toLowerCase().should.equal(forwarderAddress.toLowerCase());
       decoded.tokenAddress.toLowerCase().should.equal(tokenAddress.toLowerCase());
       decoded.tokenId.should.equal(tokenId);
-      decoded.forwarderVersion.should.equal(4);
+      should.exist(decoded.forwarderVersion);
+      should.equal(decoded.forwarderVersion, 4);
     });
 
     it('should handle large token IDs for ERC721', () => {
@@ -133,7 +134,7 @@ describe('Abstract ETH Utils', () => {
       const forwarderAddress = '0x8f977e912ef500548a0c3be6ddde9899f1199b81';
       const tokenAddress = '0xdf7decb1baa8f529f0c8982cbb4be50357195299';
       const tokenId = '99999';
-      const forwarderVersion = 0;
+      const forwarderVersion = 2;
 
       const encoded = flushERC1155TokensData(forwarderAddress, tokenAddress, tokenId, forwarderVersion);
       const decoded = decodeFlushERC1155TokensData(encoded);
@@ -142,7 +143,7 @@ describe('Abstract ETH Utils', () => {
       decoded.forwarderAddress.toLowerCase().should.equal(forwarderAddress.toLowerCase());
       decoded.tokenAddress.toLowerCase().should.equal(tokenAddress.toLowerCase());
       decoded.tokenId.should.equal(tokenId);
-      decoded.forwarderVersion.should.equal(0);
+      should.not.exist(decoded.forwarderVersion);
     });
 
     it('should decode flush ERC1155 data correctly for v4+', () => {
@@ -158,7 +159,8 @@ describe('Abstract ETH Utils', () => {
       decoded.forwarderAddress.toLowerCase().should.equal(forwarderAddress.toLowerCase());
       decoded.tokenAddress.toLowerCase().should.equal(tokenAddress.toLowerCase());
       decoded.tokenId.should.equal(tokenId);
-      decoded.forwarderVersion.should.equal(4);
+      should.exist(decoded.forwarderVersion);
+      should.equal(decoded.forwarderVersion, 4);
     });
 
     it('should handle token ID 0 for ERC1155', () => {
diff --git a/modules/sdk-coin-eth/test/resources/eth.ts b/modules/sdk-coin-eth/test/resources/eth.ts
index 41c12277fc..54d9da1a1e 100644
--- a/modules/sdk-coin-eth/test/resources/eth.ts
+++ b/modules/sdk-coin-eth/test/resources/eth.ts
@@ -1,8 +1,6 @@
 import { Networks } from '@bitgo/statics';
 import { EIP1559TxData, ETHTransactionType, KeyPair, LegacyTxData } from '../../src';
 
-export const COIN = 'hteth';
-
 export const TX_JSON =
   '{"gasLimit":"1000","gasPrice":"10","nonce":1,"chainId":31,"value":"100000","data":"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