1. Types of Events

You can read any kind of event that is emitted from a contract using:

• contract.queryFilter(...) — to read past events
• contract.on(...) — to listen to real-time events

Let’s break it down by event structure:

🔹 1. Anonymous Events

event Update(uint256);

• No name or indexed fields.
• In Ethers.js: args[0], not args.count

🔹 2. Named Events (No Indexed Fields)

event Update(uint256 newCount);

• Access via args.newCount or args[0]

🔹 3. Named Events with Indexed Parameters

event Transfer(address indexed from, address indexed to, uint256 amount);

• Can filter by indexed fields in Ethers.js