RocketChat/Rocket.Chat

import React, { StrictMode } from 'react';
import { render } from 'react-dom';

import AppRoot from '../views/root/AppRoot';

const createContainer = (): Element => {
    const container = document.getElementById('react-root');

    if (!container) {
        throw new Error('could not find the element #react-root on DOM tree');
    }

    document.body.insertBefore(container, document.body.firstChild);

    return container;
};

const container = createContainer();

render(
    <StrictMode>
        <AppRoot />
    </StrictMode>,
    container,
);