semantic-ui-react/src/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`.')
    }
  }
}