DanielVF

pragma solidity >=0.8.17;

// Cursed ERC20 that does everything in events.
// by @danielvf, based solmate by @transmissions11

abstract contract ERC20 {
    event Transfer(address indexed from, address indexed to, uint256 amount);
    event Approval(address indexed owner, address indexed spender, uint256 amount);

    string public name;

Amxx

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/interfaces/IERC721.sol";
import "@openzeppelin/contracts/interfaces/IERC721Receiver.sol";
import "@openzeppelin/contracts/interfaces/IERC1155.sol";
import "@openzeppelin/contracts/interfaces/IERC1155Receiver.sol";
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";

Vectorized

// SPDX-License-Identifier: MIT
// Author: vectorized.eth
pragma solidity ^0.8.0;
pragma abicoder v2;

// DISCLAIMER:
// This is experimental software and is provided on an "as is" and "as available" basis.
// We do not give any warranties and will not be liable for any loss incurred through any use of this codebase.

library Base64 {

hrkrshnn

Upgrade to at least 0.8.4

Using newer compiler versions and the optimizer gives gas optimizations and additional safety checks for free!

The advantages of versions 0.8.* over <0.8.0 are:

• Safemath by default from 0.8.0 (can be more gas efficient than some library based safemath).
• Low level inliner from 0.8.2, leads to cheaper runtime gas. Especially relevant when the contract has small functions. For