// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title IWETH
/// @author Julien Béranger
/// @notice The wrapped-ether surface `WETHRegistry` probes: ERC-20, plus the
///         two entrypoints that make a wrapper a wrapper.
/// @dev Deliberately not the full WETH9 ABI. The registry only needs to move
///      one wei in and back out again, and a narrower interface is a narrower
///      set of assumptions about what a candidate has to implement.
interface IWETH is IERC20 {
    /// @notice Wrap the ether sent with this call, one for one.
    function deposit() external payable;

    /// @notice Unwrap `amount`, burning the wrapper token and returning ether.
    /// @param amount The wrapped ether to unwrap, in wei.
    function withdraw(uint256 amount) external;
}