Reactjs 如何更新旧的生命周期方法&x27；组件将接收道具'；？

我得到了这个密码：

const mapStateToProps = (state) => {
    return {
        currentUser: state.mainstate.currentUser,
        appLoaded: state.mainstate.appLoaded,
        redirectTo: state.mainstate.redirectTo
    }};

const mapDispatchToProps = dispatch => ({
    onLoad: (payload, token) =>
        dispatch({ type: APP_LOAD, payload, token, skipTracking: true }),
    onRedirect: () =>
        dispatch({ type: REDIRECT })
});

class App extends React.Component {

  UNSAFE_componentWillReceiveProps(nextProps) {
    if (nextProps.redirectTo) {
       store.dispatch( push(nextProps.redirectTo) );
       this.props.onRedirect();
    }
  }

//...

}
export default connect(mapStateToProps, mapDispatchToProps)(App);

componentDidUpdate(prevProps, prevState) {
        if(this.props.redirectTo) {
            store.dispatch( push(prevProps.redirectTo) );
            this.props.onRedirect();
        }
    }

需要将其更新为新方法“getDerivedStateFromProps”，尝试如下操作：

static getDerivedStateFromProps(props, state) {
  if (props.redirectTo) {
     store.dispatch( push(props.redirectTo) );
     props.onRedirect();
  }
}

但我得到错误“初始状态未定义”。 如何将状态传递给getDerivedStateFromProps？ 或者我应该使用“componentDidUpdate” 已尝试此代码：

const mapStateToProps = (state) => {
    return {
        currentUser: state.mainstate.currentUser,
        appLoaded: state.mainstate.appLoaded,
        redirectTo: state.mainstate.redirectTo
    }};

const mapDispatchToProps = dispatch => ({
    onLoad: (payload, token) =>
        dispatch({ type: APP_LOAD, payload, token, skipTracking: true }),
    onRedirect: () =>
        dispatch({ type: REDIRECT })
});

class App extends React.Component {

  UNSAFE_componentWillReceiveProps(nextProps) {
    if (nextProps.redirectTo) {
       store.dispatch( push(nextProps.redirectTo) );
       this.props.onRedirect();
    }
  }

//...

}
export default connect(mapStateToProps, mapDispatchToProps)(App);

componentDidUpdate(prevProps, prevState) {
        if(this.props.redirectTo) {
            store.dispatch( push(prevProps.redirectTo) );
            this.props.onRedirect();
        }
    }

但也有错误