*feature*

>Warning: A component is `contentEditable` and contains `children` managed by React. It is now your responsibility to guarantee that none of those nodes are unexpectedly modified or duplicated. This is probably not intentional.

It would help heaps if I would know _which_ component is causing this.
tag: string,
  props: ?Object,
  getCurrentOwnerName: () => ?string,
) {
  if (!props) {
    return;
  }
  
  if (voidElementTags[tag]) {
    invariant(
      props.children == null && props.dangerouslySetInnerHTML == null,
      '%s is a void element tag and must neither have `children` nor ' +
        'use `dangerouslySetInnerHTML`.%s',
      tag,
      getDeclarationErrorAddendum(getCurrentOwnerName),
    );
  }
  if (props.dangerouslySetInnerHTML != null) {
    invariant(
      props.children == null,
      'Can only set one of `children` or `props.dangerouslySetInnerHTML`.',