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**Do you want to request a *feature* or report a *bug*?**

Bug.

**What is the current behavior?**

Creating an `<input type='submit'` with `value={undefined}` results in a button with no text. https://codesandbox.io/s/nn7p94y3rl

The same behaviour can be seen with `type='reset'`

I have a PR open with a proposed fix. https://github.com/facebook/react/pull/12780

**What is the expected behavior?**

The input should use the browser's default value for the input (Submit for en, etc.).

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

React 16.3.2. Chrome 66.0.3359.139. macOS 10.13.4. Works in React 15 (unsure of earlier versions)

);
  });
  it('should not warn about missing onChange in uncontrolled inputs', () => {
    ReactDOM.render(<input />, container);
    ReactDOM.unmountComponentAtNode(container);
    ReactDOM.render(<input value={undefined} />, container);
    ReactDOM.unmountComponentAtNode(container);
    ReactDOM.render(<input type="text" />, container);
    ReactDOM.unmountComponentAtNode(container);
    ReactDOM.render(<input type="text" value={undefined} />, container);
    ReactDOM.unmountComponentAtNode(container);
    ReactDOM.render(<input type="checkbox" />, container);
    ReactDOM.unmountComponentAtNode(container);
    ReactDOM.render(<input type="checkbox" checked={undefined} />, container);
  });
  it('should properly control a value even if no event listener exists', () => {
    let node;
    expect(() => {
      node = ReactDOM.render(<input type="text" value="lion" />, container);
    }).toWarnDev(
      'Failed prop type: You provided a `value` prop to a form field without an `onChange` handler.',
    );
    setUntrackedValue.call(node, 'giraffe');
    
    
    dispatchEventOnNode(node, 'input');
    expect(node.value).toBe('lion');
  });
  it('should control a value in reentrant events', () => {
    class ControlledInputs extends React.Component {