*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.
mountComponent({dangerouslySetInnerHTML: '<span>Hi Jim!</span>'});
      }).toThrowError(
        '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. ' +
          'Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.',
      );
    });
    it('should validate use of dangerouslySetInnerHTML', () => {
      expect(function() {
        mountComponent({dangerouslySetInnerHTML: {foo: 'bar'}});
      }).toThrowError(
        '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. ' +
          'Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.',
      );
    });
    it('should allow {__html: null}', () => {
      expect(function() {
        mountComponent({dangerouslySetInnerHTML: {__html: null}});
      }).not.toThrow();
    });
    it('should warn about contentEditable and children', () => {
      spyOn(console, 'error');
      mountComponent({contentEditable: true, children: ''});
      expectDev(console.error.calls.count()).toBe(1);
      expectDev(console.error.calls.argsFor(0)[0]).toContain('contentEditable');
    });
    it('should respect suppressContentEditableWarning', () => {
      spyOn(console, 'error');
      mountComponent({
        contentEditable: true,
        children: '',