// SPDX-License-Identifier: MIT

pragma solidity ^0.8.15;

library ERC20BaseStorage {
    struct Layout {
        mapping(address => uint256) balances;
        mapping(address => mapping(address => uint256)) allowances;
        uint256 totalSupply;
    }

    bytes32 internal constant STORAGE_SLOT = keccak256("v2.flair.contracts.storage.ERC20Base");

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}