easypm is a JavaScript library that provides an easy-to-use wrapper around window.postMessage, allowing you to send and receive messages within the same window. easypm simplifies the handling of events and data transmission, offering an enhanced capability over postMessage by enabling the passing of functions as well as data.

• Simplified message passing within the same window.
• Event-based message handling.
• Easy subscription and unsubscription to events.
• Supports passing functions along with data, unlike window.postMessage.

To use easypm in your project, simply import the library.

import easypm from 'easypm';

Use the on method to subscribe to an event. This method takes an event name and a callback function that will be called when the event is emitted.

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

Use the emit method to emit an event. This method takes an event name and the data to be sent. Unlike window.postMessage, easypm allows you to pass functions as well as data.

easypm.emit('myEvent', { key: 'value', callback: () => console.log('Hello!') });

Use the off method to unsubscribe from an event. This method takes an event name and the callback function to be removed.

const callback = (data) => {
  console.log('Received data:', data);
};

easypm.on('myEvent', callback);
easypm.off('myEvent', callback);

Here's a complete example demonstrating how to use easypm to send and receive messages within the same window, including passing functions.

import easypm from './easypm';

// Subscribing to an event
easypm.on('customEvent', (data) => {
  console.log('Received:', data);
  if (data.callback) {
    data.callback(); // Execute the passed function
  }
});

// Emitting an event
easypm.emit('customEvent', {
  message: 'Hello, easypm!',
  callback: () => console.log('Function executed!'),
});

// Unsubscribing from an event
const callback = (data) => {
  console.log('Received:', data);
};

easypm.on('customEvent', callback);
easypm.off('customEvent', callback);

Subscribes to an event.

• event: The name of the event to subscribe to.
• callback: The function to call when the event is emitted.

Unsubscribes from an event.

• event: The name of the event to unsubscribe from.
• callback: The function to remove from the subscription list.

Emits an event with the specified data. Supports passing functions along with data.

• event: The name of the event to emit.
• data: The data to send with the event, which can include functions.

This library is licensed under the MIT License. Feel free to use it in your projects.

easypm simplifies the process of sending and receiving messages within the same window by providing a convenient API for event-based communication. With its enhanced capability to pass functions as well as data, easypm offers more flexibility and power compared to window.postMessage. Whether you're building a complex web application or just need a reliable way to pass messages and functions within the same window, easypm can help streamline your development process.