// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";

library Protocol {
    /**
     * @dev Thrown when the provided token does not match with the configured base token.
     */
    error BaseTokenMismatch();

    /**
     * @dev Protocol configuration.
     * @param baseToken ERC20 contract. Used as the price denominator.
     * @param protocolExternalFeesCollector Address that will accumulate fees
     * received from external source directly (e.g. Warper performing manual rewards distribution).
     */
    struct Config {
        IERC20Upgradeable baseToken;
        address protocolExternalFeesCollector;
    }
}