taro typeScript does not exist on type 'Readonly<{}>'.

Question

constructor(props) {
    super(props)
    this.state = {
      componentsStr: null
    }
  }

会报错 Property 'componentStr' does not exist on type 'Readonly<{}>'.

请问taro中怎么定义

Answer 1

interface IState {
  componentStr: string,
}
export default class Index extends Component<{}, IState>{}

Answer 2

在typeScript和react 里 state里的所有数据变量都要去定义数据类型的，从而typeScript才能去验证是不是这个类型