TypeError: Super expression must either be null or a function, not undefined

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TypeError: Super expression must either be null or a function, not undefined

_inherits

http://localhost:3000/static/js/bundle.js:42168:113

(anonymous function)

http://localhost:3000/static/js/bundle.js:42213:2

./src/index.js

F:/git/nodejs-study/imocc/create-react-app/my-app/src/index.js:24

错误原因：component的c应该是大写的

class Test extends React.component{
constructor(props){
super(props);
}


render(){
console.log(this.props)
return <h2>测试组件</h2>
}
}