Mercure subscription using React

Usage no npm install needed!

<script type="module">
  import ceratiReactMercure from 'https://cdn.skypack.dev/@cerati/react-mercure';



This React library gives you the possibility to integrate Mercure in your React applications. To do that you have two possibilities : integrate it either with an HOF given by this library or with a common component also given by this library.

MercureSubscriber component

You can use the given MercureSubscriber component by doing the following :

function App() {
  const [data, setData] = React.useState({ name: 'Boris' });

  return (
        <h1>Hello {data.name}</h1>

export default App;

The MercureSubscriber React Component require these props :

  • hub: a string representing the URL of the Mercure hub ;
  • topics: an array of string reprensenting the topics we want to subscribe ;
  • update: a callback executed when a new message is pushed on the hub in the given topics.

Some additionnals props can be passed :

  • json: a boolean. If set as true, the data will be parse with the JSON.parse function before passing them the the callback ;
  • children: can be other components passed as childrend.

With the HOF

TODO : this part of the doc needs to be written!

import React from 'react';
import { withMercure } from '@cerati/react-mercure';

function App({ mercureData }) {
  return (
      <h1>Hello {mercureData.name}</h1>

const config = {
  hub: 'http://localhost/hub',
  topics: ['http://localhost/user'],
  json: true,

export default withMercure(config, {
  name: 'Boris',