From cfcd9dbb9c6437cf9707f6ea793a6cf13e402a07 Mon Sep 17 00:00:00 2001
From: danijelTxFusion <danijel@txfusion.com>
Date: Fri, 1 Dec 2023 09:45:00 +0100
Subject: [PATCH] fix: add support for `Sepolia` testnet

---
 src/provider.ts | 6 ++++--
 src/types.ts    | 3 ++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/provider.ts b/src/provider.ts
index 17e9aff..38e6ff2 100644
--- a/src/provider.ts
+++ b/src/provider.ts
@@ -105,7 +105,7 @@ export function JsonRpcApiProvider<TBase extends Constructor<ethers.JsonRpcApiPr
         override async getTransactionReceipt(txHash: string): Promise<TransactionReceipt> {
             while (true) {
                 const receipt = (await super.getTransactionReceipt(txHash)) as TransactionReceipt;
-                if (receipt.blockNumber) {
+                if (receipt && receipt.blockNumber) {
                     return receipt;
                 }
                 await sleep(500);
@@ -600,8 +600,10 @@ export class Provider extends JsonRpcApiProvider(ethers.JsonRpcProvider) {
                 return new Provider("http://localhost:3050");
             case ZkSyncNetwork.Goerli:
                 return new Provider("https://zksync2-testnet.zksync.dev");
+            case ZkSyncNetwork.Sepolia:
+                return new Provider("https://sepolia.era.zksync.dev");
             case ZkSyncNetwork.Mainnet:
-                return new Provider("https://zksync2-mainnet.zksync.io/");
+                return new Provider("https://mainnet.era.zksync.io");
         }
     }
 }
diff --git a/src/types.ts b/src/types.ts
index e9fa2cb..fbcb1c6 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -21,6 +21,7 @@ export enum Network {
     Ropsten = 3,
     Rinkeby = 4,
     Goerli = 5,
+    Sepolia = 6,
     Localhost = 9,
 }
 
@@ -99,7 +100,7 @@ export class TransactionResponse extends ethers.TransactionResponse {
     override async wait(confirmations?: number): Promise<TransactionReceipt> {
         while (true) {
             const receipt = (await super.wait(confirmations)) as TransactionReceipt;
-            if (receipt.blockNumber) {
+            if (receipt && receipt.blockNumber) {
                 return receipt;
             }
             await sleep(500);