Sample of a widget library rendering

sample-post.js

import { renderToString } from 'react-dom/server';
import { createElement } from 'react';
import * as allWidgets from 'widget-library';

// POST /api/render
const render = (req, res) => {
  const { widgetName, props } = req.body;

  if (!(widgetName in allWidgets)) {
    return res.status(404).json({ error: `Widget with name ${widgetName} not found.` });
  }

  const Widget = allWidgets[widget];
  const instance = createElement(Widget, props);

  res.status(200).json({ rendered: renderToString(instance) });
};