‘LeftMenu‘ cannot be used as a JSX component.

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最近刚开始学习react，编写完类组件，使用时发现报错，错误如下：

TS2786: 'LeftMenu' cannot be used as a JSX component. 
Its instance type 'LeftMenu' is not a valid JSX element. 
Type 'LeftMenu' is missing the following properties from type 'ElementClass': context, setState, forceUpdate, props, and 2 more.

直接在描述文件(styled.d.ts) 添加

export class ReactElement<T> {
}

问题解决！

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