Flow: An inexplicable error hint: parameter `props` Missing annotation

[xclidongbo]

export default class AwesomeProject extends React.Component {

  constructor(props) {  //this is the Error content:  parameter `props` Missing annotation  
    super(props);
    this.state = { content: '无数据' };  // Error: object literal This type is incompatible with undefined. Did you forget to declare type parameter `State` of property `Component`?

  }
...
}

How can I fix it?

[asolove]

You need to provide a type annotation on the props argument to constructor. For example, if props just takes a string under "name", it might look like:

constructor(props: {name: string}){