This usually means that the user mixed up our lowercase/uppercase naming convention; see https://github.com/facebook/react/pull/3429#issuecomment-85166440.

We could add a message like

> Warning: The tag <commentBox> is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.

We'd check this only once per tag and only in development mode.

topRateChange: 'ratechange',
  topSeeked: 'seeked',
  topSeeking: 'seeking',
  topStalled: 'stalled',
  topSuspend: 'suspend',
  topTimeUpdate: 'timeupdate',
  topVolumeChange: 'volumechange',
  topWaiting: 'waiting',
};
function trapClickOnNonInteractiveElement(node: HTMLElement) {
  
  
  
  
  
  
  
  
  
  node.onclick = emptyFunction;
}
function trapBubbledEventsLocal(node: Element, tag: string) {
  
  
  
  
  
  switch (tag) {
    case 'iframe':
    case 'object':