by default use MultiSendCallOnly v1.4.1, MultiSend v1.4.1 if the batc…

…h includes delegate calls

src/encodeMulti.ts

@@ -5,7 +5,9 @@ import { pack } from '@ethersproject/solidity'
 import { MetaTransaction, OperationType } from './types'
 
 export const MULTI_SEND_ABI = ['function multiSend(bytes memory transactions)']
-const MULTI_SEND_CONTRACT_ADDRESS = '0xA238CBeb142c10Ef7Ad8442C6D1f9E89e07e7761'
+
+const MULTISEND_141 = '0x38869bf66a61cF6bDB996A6aE40D5853Fd43B526'
+const MULTISEND_CALLONLY_141 = '0x9641d764fc13c8B624c04430C7356C1C7C8102e2'
 
 /// Encodes the transaction as packed bytes of:
 /// - `operation` as a `uint8` with `0` for a `call` or `1` for a `delegatecall` (=> 1 byte),
@@ -32,7 +34,11 @@ const remove0x = (hexString: string) => hexString.substr(2)
 // For more information refer to https://docs.gnosis.io/safe/docs/contracts_details/#gnosis-safe-transactions.
 export const encodeMulti = (
   transactions: readonly MetaTransaction[],
-  multiSendContractAddress: string = MULTI_SEND_CONTRACT_ADDRESS
+  multiSendContractAddress: string = transactions.some(
+    (t) => t.operation === OperationType.DelegateCall
+  )
+    ? MULTISEND_141
+    : MULTISEND_CALLONLY_141
 ): MetaTransaction => {
   const transactionsEncoded =
     '0x' + transactions.map(encodePacked).map(remove0x).join('')
@@ -44,7 +50,7 @@ export const encodeMulti = (
 
   return {
     operation: OperationType.DelegateCall,
-    to: multiSendContractAddress || MULTI_SEND_CONTRACT_ADDRESS,
+    to: multiSendContractAddress,
     value: '0x00',
     data,
   }