iframe-sync

Simple state synchronization between related IFrames.

Overview

iframe-sync is a lightweight JavaScript library with no dependencies that enables state synchronization between related IFrames. It allows you to easily share and update state across multiple windows, ensuring that all participants stay in sync.

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Installation

You can include iframe-sync in your project by downloading the source files or by using a package manager.

Using npm

npm install iframe-sync

Using yarn

yarn add iframe-sync

Usage

IframeSyncClient

The IframeSyncClient class is used by browser windows or IFrames that want to participate in state synchronization.

Example

import { IframeSyncClient } from 'iframe-sync';

const client = new IframeSyncClient('client1', (state, isOwnMessage, isReadyResponse) => {
    console.log('Received state update:', state, 'Is own message:', isOwnMessage,
        'Is ready response', isReadyResponse);
});

client.ready();

// Send a state update
client.stateChange({ key: 'value' });

IframeSyncBroker

The IframeSyncBroker class is used to manage state synchronization between multiple clients. It should be instantiated in the parent window that contains the IFrames.

Example

import { IframeSyncBroker } from 'iframe-sync';

const broker = new IframeSyncBroker();

API

IframeSyncClient

• new IframeSyncClient(clientName, recv)
  • clientName (string, optional): A unique client name. If not provided, one will be generated randomly.
  • recv (function): A callback function to receive the full state when updates are sent.
  • ready(): Notify the broker that this client is ready to receive state updates.
  • stateChange(update): Send a state update to the broker, which will broadcast it to all other clients.
    • update (Object): The state update to send.

IframeSyncBroker

• new IframeSyncBroker(): Create a new IframeSyncBroker instance

License

This project is licensed under the MIT License.