Taro: redux状态映射到props，提示没有defaultProps

Created on 22 Oct 2019 · 2Comments · Source: NervJS/taro

环境

taro版本1.3.18

问题描述

项目采用ts写的，props和state的类型推断完全按照官方示例来写的，之前一直没问题，今天突然大量报下面错误

请给组件提供一个 defaultProps 以提高初次渲染性能！
TypeError: Invalid attempt to destructure non-iterable instance

后面这个错是前面的警告导致的。

代码

import { PureComponent, ComponentClass } from '@tarojs/taro';
import { View, Image } from '@tarojs/components';
import { connect } from '@tarojs/redux';
import { Column } from '@/components';
import './index.less';

type StateProps = {
  readonly imageList: Array<string>;
}

type Props = StateProps;

interface CarImage {
  props: Props;
}

const mapStateToProps = ({ usedcarCarDetail }): StateProps => ({
  imageList: usedcarCarDetail.imageList.slice(1),
});

@connect(mapStateToProps)
class CarImage extends PureComponent {
  render() {
    const { imageList } = this.props;

    return (
      <Column title="车辆图片">
        <View className="car-image">
          {imageList.map((i) => (
            <Image
              className="car-image__item"
              mode="widthFix"
              key={i}
              src={i}
            />
          ))}
        </View>
      </Column>
    );
  }
}

export default CarImage as ComponentClass<{}, {}>;

Source