semantic-ui-react/dist/es/addons/Portal/utils/validateTrigger.js

The official Semantic-UI-React integration.

import React from 'react';
import * as ReactIs from 'react-is';
/**
 * Asserts that a passed element can be used cloned a props will be applied properly.
 */

export default function validateTrigger(element) {
  if (element) {
    React.Children.only(element);

    if (ReactIs.isFragment(element)) {
      throw new Error('An "React.Fragment" cannot be used as a `trigger`.');
    }
  }
}