chore: update IERC20Permit to inherit from IERC20

README.md

@@ -4,6 +4,7 @@
 
 **DISCLAIMER: This code has NOT been externally audited and is actively being developed. Please do not use in production without taking the appropriate steps to ensure maximum security.**
 
+<!-- TODO: Update this documentation to reflect new ERC20Permit implementation. -->
 Basic ERC-20 contract designed to be inherited and extended. Leveraging native overflow checks in solc 0.8 to simplify ERC-20 implementation. It should be noted that this ERC-20 implementation does not include some functionality that is commonly used in other tokens, such as:
 - `address(0)` checks on `_transfer`
 - `permit()`

contracts/interfaces/IERC20Permit.sol

@@ -1,24 +1,10 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 pragma solidity ^0.8.7;
 
-/// @title Interface of the ERC20 standard with the addition of permit functionality outlined in EIP 2612
-interface IERC20Permit {
+import { IERC20 } from "./IERC20.sol";
 
-    /**
-     * @dev   Emits an event indicating that tokens have moved from one account to another.
-     * @param owner_     Account that tokens have moved from.
-     * @param recipient_ Account that tokens have moved to.
-     * @param amount_    Amount of tokens that have been transferred.
-     */
-    event Transfer(address indexed owner_, address indexed recipient_, uint256 amount_);
-
-    /**
-     * @dev   Emits an event indicating that one account has set the allowance of another account over their tokens.
-     * @param owner_   Account that tokens are approved from.
-     * @param spender_ Account that tokens are approved for.
-     * @param amount_  Amount of tokens that have been approved.
-     */
-    event Approval(address indexed owner_, address indexed spender_, uint256 amount_);
+/// @title Interface of the ERC20 standard with the addition of permit functionality outlined in EIP 2612
+interface IERC20Permit is IERC20 {
 
     /**
         @dev   Approve by signature.
@@ -51,66 +37,4 @@ interface IERC20Permit {
      */
     function DOMAIN_SEPARATOR() external view returns (bytes32 domain_);
 
-    /**
-     * @dev Returns the name of the token.
-     */
-    function name() external view returns (string memory name_);
-
-    /**
-     * @dev Returns the symbol of the token.
-     */
-    function symbol() external view returns (string memory symbol_);
-
-    /**
-     * @dev Returns the decimal precision used by the token.
-     */
-    function decimals() external view returns (uint8 decimals_);
-
-    /**
-     * @dev Returns the total amount of tokens in existence.
-     */
-    function totalSupply() external view returns (uint256 totalSupply_);
-
-    /**
-     * @dev   Returns the amount of tokens owned by a given account.
-     * @param account_ Account that owns the tokens.
-     */
-    function balanceOf(address account_) external view returns (uint256 balance_);
-
-    /**
-     * @dev   Function that returns the allowance that one account has given another over their tokens.
-     * @param owner_   Account that tokens are approved from.
-     * @param spender_ Account that tokens are approved for.
-     */
-    function allowance(address owner_, address spender_) external view returns (uint256 allowance_);
-
-    /**
-     * @dev    Function that allows one account to set the allowance of another account over their tokens.
-     *         Emits an {Approval} event.
-     * @param  spender_ Account that tokens are approved for.
-     * @param  amount_  Amount of tokens that have been approved.
-     * @return success_ Boolean indicating whether the operation succeeded.
-     */
-    function approve(address spender_, uint256 amount_) external returns (bool success_);
-
-    /**
-     * @dev    Moves an amount of tokens from `msg.sender` to a specified account.
-     *         Emits a {Transfer} event.
-     * @param  recipient_ Account that receives tokens.
-     * @param  amount_    Amount of tokens that are transferred.
-     * @return success_   Boolean indicating whether the operation succeeded.
-     */
-    function transfer(address recipient_, uint256 amount_) external returns (bool success_);
-
-    /**
-     * @dev    Moves a pre-approved amount of tokens from a sender to a specified account.
-     *         Emits a {Transfer} event.
-     *         Emits an {Approval} event.
-     * @param  owner_     Account that tokens are moving from.
-     * @param  recipient_ Account that receives tokens.
-     * @param  amount_    Amount of tokens that are transferred.
-     * @return success_   Boolean indicating whether the operation succeeded.
-     */
-    function transferFrom(address owner_, address recipient_, uint256 amount_) external returns (bool success_);
-
 }