// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

/**
 * @title EtherForwarder
 * @notice A contract that forwards received Ether to a specified address
 * @author Biconomy
 */
contract EtherForwarder {
    error ZeroAddress();
    error ForwardFailed();

    /**
     * @notice Forwards the received Ether to the specified destination address
     * @param destination The address to forward the Ether to
     */
    function forward(address destination) external payable {
        if (destination == address(0)) revert ZeroAddress();

        // Forward the Ether using assembly
        bool success;
        assembly {
            // Gas-efficient way to forward ETH
            success := call(
                gas(), // Forward all available gas
                destination, // Destination address
                callvalue(), // Amount of ETH to send
                0, // No data to send
                0, // No data size
                0, // No data to receive
                0 // No data size to receive
            )
        }

        if (!success) revert ForwardFailed();
    }

    /**
     * @notice Prevents accidental Ether transfers without a destination
     * intentionally using sting and not a custom error here
     */
    receive() external payable {
        // solhint-disable-next-line gas-custom-errors, reason-string, gas-small-strings
        revert("Use forward() function to send Ether");
    }

    /**
     * @notice Prevents accidental Ether transfers without a destination
     * intentionally using sting and not a custom error here
     */
    fallback() external payable {
        // solhint-disable-next-line gas-custom-errors, reason-string, gas-small-strings
        revert("Use forward() function to send Ether");
    }
}

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}

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