A counter library for the 21st century.

We implement OFAC compliant address blocking, checked arithmetic, hook integrations, method chaining for a rust-like application programming interface, event logging optimized for indexing software, and both incrementing and decrementing the count.

forge install jtriley-eth/safe-counter

contract MyContract {
    Counter counter;

    function blockAndSafeIncrementTwice(address sanctionedEntity) public {
        counter.requireNotBlocked()
            .sanction(sanctionedEntity)
            .safeIncrement(msg.sender)
            .safeIncrement(msg.sender);
    }
}