Jesserc Implementation

JesseCountRestriction.sol

// SPDX-License-Identifier: MIT;
pragma solidity ^0.8.7;

contract Counter{

    uint public count;
    uint timer = 0;
    error timeNotReached(string);
    bool reached = false;

    modifier requiredTime(){
          
        if(block.timestamp < timer){
            revert timeNotReached("Sorry wait till 30 seconds");
        }
        _;
           
    }

    function increment() public requiredTime {
        updateTime(block.timestamp + 30 seconds);
        count++;
        
    }

    function decrement() requiredTime public{
        count--;
        updateTime(block.timestamp + 30 seconds);
    }

    function updateTime(uint _timer) internal{
        timer = _timer;
    }

}