问每个模块只允许一个默认导出

EN

import React, { Component, PropTypes } from 'react';
import { createContainer } from 'meteor/react-meteor-data';

export default class App extends Component {
  constructor(props) {
    super(props);

    // setting up the state
    this.state = { players: [] };
}

App.propTypes = {
  players: PropTypes.array.isRequired,
};

export default createContainer(() => {
  Meteor.subscribe('players');

  return {
    players: Players.find({}, {sort: { name: 1}}).fetch(),
  };
}, App);