问WebStorm不识别ES6导出默认值

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// first module - is being recognized as an exported module.
export default {
    foo() {}
};

// second module - "Element is not exported"
const AnObject = {
    foo2() {}
};

export default AnObject;

// ReactJS Example Component - works just as fine
const Component = React.createClass({
    bar() {}
});
export default Component;