How to add max supply to a mintable ERC20 token on Polygon chain

Support Contracts
8

Hey @carboncoffee,

The thread is a bit old, so I'm answering but feel free to open another support request if someone has a different question.

The ERC20Capped receives the cap during construction, and should be used like:

contract Token is ERC20, ERC20Capped {
  constructor(string memory name, string memory symbol, uint256 cap) ERC20(name, symbol) ERC20Capped(cap) {}

  /// @dev For testing purposes. Note that access control is missing here and anyone can mint infinite tokens with this function setup !!!
  function mint(address account, uint256 amount) public {
      _mint(account, amount);
  }

  function _mint(address account, uint256 amount) internal override(ERC20Capped, ERC20) {
      super._mint(account, amount);
  }
}

Make sure to fully understand how inheritance works, and always write tests to validate the behavior you expect.