update utils and hardhatconfig for binance (#240)

Author: kumaryash90

hardhat.config.ts

@@ -29,6 +29,8 @@ const chainIds = {
   optimism_testnet: 69,
   arbitrum: 42161,
   arbitrum_testnet: 421611,
+  binance: 56,
+  binance_testnet: 97
 };
 
 // Ensure that we have all the environment variables we need.
@@ -73,6 +75,12 @@ function createTestnetConfig(network: keyof typeof chainIds): NetworkUserConfig
     case "fantom_testnet":
       nodeUrl = "https://rpc.testnet.fantom.network";
       break;
+    case "binance":
+      nodeUrl = "https://bsc-dataseed1.binance.org/";
+      break;
+    case "binance_testnet":
+      nodeUrl = "https://data-seed-prebsc-1-s1.binance.org:8545/";
+      break;
   }
 
   return {
@@ -127,6 +135,8 @@ const config: HardhatUserConfig = {
       optimisticKovan: process.env.OPTIMISM_SCAN_API_KEY || process.env.SCAN_API_KEY,
       arbitrumOne: process.env.ARBITRUM_SCAN_API_KEY || process.env.SCAN_API_KEY,
       arbitrumTestnet: process.env.ARBITRUM_SCAN_API_KEY || process.env.SCAN_API_KEY,
+      bsc: process.env.BINANCE_SCAN_API_KEY || process.env.SCAN_API_KEY,
+      bscTestnet: process.env.BINANCE_SCAN_API_KEY || process.env.SCAN_API_KEY,
     },
   },
   gasReporter: {
@@ -156,6 +166,8 @@ if (testPrivateKey) {
     arbitrum_testnet: createTestnetConfig("arbitrum_testnet"),
     optimism: createTestnetConfig("optimism"),
     optimism_testnet: createTestnetConfig("optimism_testnet"),
+    binance: createTestnetConfig("binance"),
+    binance_testnet: createTestnetConfig("binance_testnet"),
   };
 }
 

utils/nativeTokenWrapper.ts

@@ -12,4 +12,6 @@ export const nativeTokenWrapper: Record<number, string> = {
   69: "0xbC6F6b680bc61e30dB47721c6D1c5cde19C1300d", // optimism testnet
   42161: "0x82af49447d8a07e3bd95bd0d56f35241523fbab1", // arbitrum
   421611: "0xEBbc3452Cc911591e4F18f3b36727Df45d6bd1f9", // arbitrum testnet
+  56: "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c", // binance mainnet
+  97: "0xae13d989daC2f0dEbFf460aC112a837C89BAa7cd", // binance testnet
 };