Sveltekit Sse

Overview:

The SvelteKit SSE library provides a simple way to create and consume server-sent events in web applications. It allows for the production and consumption of live data streams between the server and client, facilitating real-time updates in web applications.

Features:

• Locking: All streams are locked server-side by default, ensuring the server maintains the connection indefinitely.
• Stop Mechanism: Users can stop a connection explicitly and run custom code when a connection is halted.
• Cleanup Process: The server detects when a client disconnects from the stream and triggers the stop function with a default delay of 30 seconds.
• Reconnection: Users can reconnect to the stream automatically when it closes.
• Custom Headers: Custom headers can be applied to the requests for enhanced customization.
• Transform Stream: The stream can be transformed into different object types using the source::select::transform method.
• JSON Parsing: Incoming messages from the source can be parsed as JSON using the source::select::json functionality.

Installation:

To install the SvelteKit SSE library, follow these steps:

1. Producer Setup:

// Emit 'hello world' and close the stream after 2 seconds
emit('message', 'hello world');
lock.set(false); // Close the stream

2. Consumer Configuration:

// Consume server-sent events on the client-side
const eventSource = new EventSource('/stream');
eventSource.onmessage = function(event) {
  console.log(event.data);
};

Summary:

In summary, the SvelteKit SSE library offers a robust solution for creating and consuming server-sent events in web applications. Its features like locking, stop mechanism, cleanup process, reconnection capabilities, custom headers, and stream transformation make it a versatile tool for real-time data communication between server and client. By following the installation guide provided, users can easily integrate this library into their projects to enable seamless live data streaming.