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window-post-message-proxy

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window-post-message-proxy

A library used in place of the native window.postMessage which when used on both the sending and receiving windows allow for a nicer asynchronouse promise messaging between the windows

  • 0.2.6
  • Source
  • npm
  • Socket score

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What is window-post-message-proxy?

The window-post-message-proxy npm package is designed to facilitate communication between different windows or iframes in a web application using the postMessage API. It provides a simple and consistent interface for sending and receiving messages, handling message events, and managing message listeners.

What are window-post-message-proxy's main functionalities?

Sending Messages

This feature allows you to send messages from one window to another. The `postMessage` method takes the target window, the message object, and the target origin as parameters.

const proxy = new WindowPostMessageProxy();
proxy.postMessage(window, { type: 'greeting', text: 'Hello, world!' }, '*');

Receiving Messages

This feature allows you to set up handlers to receive and process messages. The `addHandler` method takes an object with `test` and `handle` functions. The `test` function determines if the handler should process the message, and the `handle` function processes the message.

const proxy = new WindowPostMessageProxy();
proxy.addHandler({
  test: message => message.type === 'greeting',
  handle: message => console.log('Received message:', message)
});

Removing Handlers

This feature allows you to remove previously added message handlers. The `removeHandler` method takes the handler object that was added using `addHandler`.

const proxy = new WindowPostMessageProxy();
const handler = {
  test: message => message.type === 'greeting',
  handle: message => console.log('Received message:', message)
};
proxy.addHandler(handler);
proxy.removeHandler(handler);

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Package last updated on 07 Nov 2019

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