Shared EventBus for Micro-Frontends

This package provides a shared event bus for communication between micro-frontends.

Installation

npm install shared-eventbus

Usage

import { eventBus } from "shared-eventbus";

// Subscribe to event
eventBus.on("productQuantityChanged", (payload) => {
  console.log("Quantity changed:", payload);
});

// Emit event
eventBus.emit("productQuantityChanged", { productId: "123", quantity: 5 });

// Unsubscribe
const handler = (payload) => console.log(payload);
eventBus.on("event", handler);
eventBus.off("event", handler);

// Subscribe once
eventBus.once("oneTimeEvent", () => console.log("This will fire only once"));

API

• on(eventName: string, handler: EventHandler): void - subscribe to event
• off(eventName: string, handler: EventHandler): void - unsubscribe from event
• emit(eventName: string, payload?: EventPayload): void - emit event
• once(eventName: string, handler: EventHandler): void - subscribe to event once
• clear(eventName: string): void - clear all subscriptions for event