@jessestolwijk/reconnecting-event-source v0.1.0

Reconnecting event source

Wrapper around the EventSource - a interface to server-sent events.

The EventSource implementation shipped in modern browsers is missing automatic reonnection on errors, this makes the EventSource not reliable enough to use as an event bus in production grade applications. In the ReconnectingEventSource I've implemented a basic auto-reconnect feature on top of the EventSource interface.

Example usage

import { ReconnectingEventSource } from "@jessestolwijk/reconnecting-event-source";

const eventSource = new ReconnectingEventSource("https://localhost:8080/events");

eventSource.onOpen = (event) => {
  console.log("Connection opened");
};

eventSource.onMessage = (event) => {
  console.log(`Received message ${event.body}`);
};

eventSource.onError = (event) => {
  console.log(`Error ${event}`);
};

eventSource.onReconnected = (event) => {
  console.log("Connection with the server restored");
};

// Close the event source after 1 minute
setTimeout(() => {
  eventSource.close();
}, 60000);