event-emitter

High-performance, zero-allocation-on-emit event emitter.

Part of the OcyrusJs suite.

✨ Features

• Zero-Allocation Emit: Optimized to avoid any object or array allocation during event emission.
• Arg-Specific Optimizations: Dedicated paths for 0-3 arguments to eliminate arguments or ...args overhead.
• Fast Removal: Uses unordered removal (swap-and-pop) for listener deletion, keeping the operations $O(1)$ where possible.
• Minimal Footprint: Under 1KB gzipped.

🚀 Performance

Method	Ops/sec	Comparison
ocyrus/EventEmitter	23.0M	Parity
node:events	23.2M	Parity

Note: While raw ops/sec matches Node's optimized native emitter, OcyrusJs ensures zero garbage collection overhead in non-Node environments (like Browsers or Edge).

📦 Installation

npm install @ocyrusjs/event-emitter

🛠️ Usage

import { EventEmitter } from '@ocyrusjs/event-emitter';

const ee = new EventEmitter();

ee.on('data', (payload) => {
  console.log('Received:', payload);
});

ee.emit('data', { hello: 'world' });

License

MIT © Nishith Patel