How to use the react-dnd.DndProvider function in react-dnd

// dispatch: PropTypes.func.isRequired,
  // location: PropTypes.shape({
  //   pathname: PropTypes.string
  // })
}
App.defaultProps = {
  location: undefined
}

const mapStateToProps = (state, ownProps) => {
  return {
    location: state.router.location
  }
}

export default DndProvider(HTML5Backend)(connect(mapStateToProps)(App))
export { App as AppNotConnected }

// chrome 41 fix
// https://tc39.github.io/ecma262/#sec-array.prototype.find
if (!Array.prototype.find) {
  Object.defineProperty(Array.prototype, 'find', {
    value: function(predicate) {
     // 1. Let O be ? ToObject(this value).
      if (this == null) {
        throw new TypeError('"this" is null or not defined');
      }

      var o = Object(this);

      // 2. Let len be ? ToLength(? Get(O, "length")).
      var len = o.length >>> 0;