botframework-webchat-component/src/Utils/createCustomEvent.js

React component of botframework-webchat

export default function createCustomEvent(name, eventInitDict) {
  let event;

  if (typeof CustomEvent === 'function') {
    event = new CustomEvent(name);
  } else {
    event = document.createEvent('Event');

    event.initEvent(name, true, true);
  }

  Object.entries(eventInitDict).forEach(([key, value]) => {
    event[key] = value;
  });

  return event;
}