Zap wsteth bridge

.env.wsteth.manta_sepolia

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+# Detailed info: https://github.com/lidofinance/lido-l2#Project-Configuration
+
+# ############################
+# RPCs
+# ############################
+
+RPC_ETH_SEPOLIA=https://rpc.ankr.com/eth_sepolia
+RPC_OPT_SEPOLIA=https://manta-sepolia.rpc.caldera.xyz/http
+RPC_MANTA_SEPOLIA=https://manta-sepolia.rpc.caldera.xyz/http
+
+# ############################
+# Etherscan
+# ############################
+
+ETHERSCAN_API_KEY_ETH=
+ETHERSCAN_API_KEY_OPT=
+ETHERSCAN_API_KEY_MANTA=
+
+# ############################
+# Bridge/Gateway Deployment
+# ############################
+
+# Address of the token to deploy the bridge/gateway for
+TOKEN=0xB82381A3fBD3FaFA77B3a7bE693342618240067b
+
+# Name of the network environments used by deployment scripts.
+# Might be one of: "mainnet", "sepolia".
+NETWORK=sepolia
+
+# Private key of the deployer account used for deployment process
+ETH_DEPLOYER_PRIVATE_KEY=090cf6a293b034926caf9bb6ac41390be6bb4aa7f7cd3ea3ec2118a6784f0230
+OPT_DEPLOYER_PRIVATE_KEY=090cf6a293b034926caf9bb6ac41390be6bb4aa7f7cd3ea3ec2118a6784f0230
+
+# 0x32A0E5828B62AAb932362a4816ae03b860b65e83 is the Lido DAO Agent
+L1_PROXY_ADMIN=0x32A0E5828B62AAb932362a4816ae03b860b65e83
+L1_BRIDGE_ADMIN=0x32A0E5828B62AAb932362a4816ae03b860b65e83
+L1_DEPOSITS_ENABLED=true
+L1_WITHDRAWALS_ENABLED=true
+L1_DEPOSITS_ENABLERS=["0x32A0E5828B62AAb932362a4816ae03b860b65e83"]
+L1_DEPOSITS_DISABLERS="["0x32A0E5828B62AAb932362a4816ae03b860b65e83", "0xAf5B6AE540fCf3BD76f1b4C83fC87143932AAd09"]"
+L1_WITHDRAWALS_ENABLERS=["0x32A0E5828B62AAb932362a4816ae03b860b65e83"]
+L1_WITHDRAWALS_DISABLERS="["0x32A0E5828B62AAb932362a4816ae03b860b65e83", "0xAf5B6AE540fCf3BD76f1b4C83fC87143932AAd09"]"
+
+L2_PROXY_ADMIN=0xA74Eb604b0995409F7203BDc3Ae2c7a001873eEb
+L2_BRIDGE_ADMIN=0xA74Eb604b0995409F7203BDc3Ae2c7a001873eEb
+L2_DEPOSITS_ENABLED=true
+L2_WITHDRAWALS_ENABLED=true
+L2_DEPOSITS_ENABLERS=["0xA74Eb604b0995409F7203BDc3Ae2c7a001873eEb"]
+L2_DEPOSITS_DISABLERS="["0xA74Eb604b0995409F7203BDc3Ae2c7a001873eEb", "0xAf5B6AE540fCf3BD76f1b4C83fC87143932AAd09"]"
+L2_WITHDRAWALS_ENABLERS=["0xA74Eb604b0995409F7203BDc3Ae2c7a001873eEb"]
+L2_WITHDRAWALS_DISABLERS="["0xA74Eb604b0995409F7203BDc3Ae2c7a001873eEb", "0xAf5B6AE540fCf3BD76f1b4C83fC87143932AAd09"]"
+
+# ############################
+# Integration & E2E Testing
+# ############################
+
+TESTING_OPT_NETWORK=sepolia
+TESTING_OPT_L1_TOKEN=0xB82381A3fBD3FaFA77B3a7bE693342618240067b
+TESTING_OPT_L2_TOKEN=0x24B47cd3A74f1799b32B2de11073764Cb1bb318B
+TESTING_OPT_L1_ERC20_TOKEN_BRIDGE=0x4Abf633d9c0F4aEebB4C2E3213c7aa1b8505D332
+TESTING_OPT_L2_ERC20_TOKEN_BRIDGE=0xdBA2760246f315203F8B716b3a7590F0FFdc704a
+
+# ############################
+# Integration Testing
+# ############################
+
+TESTING_USE_DEPLOYED_CONTRACTS=true
+TESTING_L1_TOKENS_HOLDER=
+
+# ############################
+# E2E Testing
+# ############################
+
+TESTING_PRIVATE_KEY=

contracts/manta/StakeHelper.sol

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+// SPDX-FileCopyrightText: 2022 Lido <info@lido.fi>
+// SPDX-License-Identifier: GPL-3.0
+
+pragma solidity 0.8.10;
+
+import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
+import {IERC20Bridged} from "../token/interfaces/IERC20Bridged.sol";
+
+
+interface IL1TokenBridge {
+    function depositERC20To(
+        address l1Token_,
+        address l2Token_,
+        address to_,
+        uint256 amount_,
+        uint32 l2Gas_,
+        bytes calldata data_
+    ) external;
+}
+
+error ZeroAddress();
+
+error WrapETHFailed();
+
+error ZeroAmount();
+
+error InsufficientWstETHReceived();
+
+contract StakeHelper is ReentrancyGuard {
+    IERC20 public immutable l1Token;
+
+    address public immutable l2Token;
+
+    IL1TokenBridge public immutable l1TokenBridge;
+
+    event Stake(address indexed staker, uint256 indexed amount);
+
+    constructor(
+        address l1Token_, 
+        address l2Token_,
+        address l1TokenBridge_
+    ) {
+        l1Token = IERC20(l1Token_);
+        l2Token = l2Token_;
+        l1TokenBridge = IL1TokenBridge(l1TokenBridge_);
+    }
+
+    // Wrap sender's ETH to wstETH and bridge to L2
+    function stakeETH(
+        address to,
+        uint32 l2Gas_,
+        bytes calldata data_
+    ) external payable nonReentrant {
+        if (to == address(0)) {
+            revert ZeroAddress();
+        }
+        uint256 amount = msg.value;
+        if (amount == 0) {
+            revert ZeroAmount();
+        }
+        // wstETH on L1 will automatically wrap sent Ether in `receive` function
+        (bool success, ) = address(l1Token).call{value: msg.value}("");
+        if (!success) {
+            revert WrapETHFailed();
+        }
+        // double check amount
+        if (l1Token.balanceOf(address(this)) < amount) {
+            revert InsufficientWstETHReceived();
+        }
+        // now the wstETH is at this contract, bridge to L2 in behalf of the sender
+        // 1. approve token bridge to use `l1Token` of this contract
+        l1Token.approve(address(l1TokenBridge), amount);
+        // 2. actual cross bridge transfer
+        l1TokenBridge.depositERC20To(address(l1Token), l2Token, msg.sender, amount, l2Gas_, data_);
+
+        emit Stake(msg.sender, amount);
+    }
+
+}