add extra deployment checks

script/swap_and_bridge/contracts/SwapAndBridge.s.sol

@@ -8,13 +8,16 @@ import { SwapAndBridge } from "src/L1/SwapAndBridge.sol";
 /// @notice This contract is used to deploy SwapAndBridge contract.
 contract SwapAndBridgeScript is Script {
     /// @notice This function deploys the SwapAndBridge contract.
-    function run(address bridgeAddress, address l1Token, address l2Token) public {
+    function run(address _l1Bridge, address _l1Token, address _l2Token) public {
+        require(_l1Bridge != address(0), "Invalid L1 bridge address.");
+        require(_l1Token != address(0), "Invalid L1 token address.");
+        require(_l2Token != address(0), "Invalid L2 token address.");
         // Deployer's private key. L1_SWAP_AND_BRIDGE_DEPLOYER_PRIVATE_KEY is set in .env file.
         uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
 
         console2.log("Deploying SwapAndBridge contract...");
         vm.startBroadcast(deployerPrivateKey);
-        SwapAndBridge swapAndBridge = new SwapAndBridge(bridgeAddress, l1Token, l2Token);
+        SwapAndBridge swapAndBridge = new SwapAndBridge(_l1Bridge, _l1Token, _l2Token);
         vm.stopBroadcast();
         assert(address(swapAndBridge) != address(0));
         console2.log("SwapAndBridge successfully deployed at address: %s", address(swapAndBridge));