Express Server-Sent Events Middleware

express-sse (from `dpskvn/express-sse`) is a lightweight Express.js middleware designed for easily implementing Server-Sent Events (SSE) in Node.js applications. It provides a straightforward API to send real-time, unidirectional updates from the server to connected clients over a standard HTTP connection, making it suitable for dashboards, live feeds, and notification systems. The current stable version is `1.0.0`, released on April 17, 2025, indicating active development and maintenance. Its primary differentiator is its simplicity and focus on one-way communication, which often makes it a more suitable and simpler alternative to WebSockets for server-to-client data streaming scenarios. It handles the necessary HTTP headers and connection management for SSE, allowing developers to focus on sending data without extensive boilerplate.