prop值无法由object属性计算

[kdong007]

Taro 1.0.7

例如我有个测试组件

import Taro from "@tarojs/taro";
import { View } from "@tarojs/components";

export default class Test extends Taro.PureComponent {

    render() {
        const { val } = this.props;
        return <View>{val}</View>;
    }

}

在另一页面中我定义一组Constants再通过其属性计算val给Test

const Constants = {
    aa: "aa",
};

class Mypage extends Taro.Component{

   render(){
        const aa = "aa";
        return <Test val={aa === Constants.aa} />;
   }

}

这时候Test收到false
查看编译后的xml为

<test val="{{aa === Constants.aa}}" __triggerObserer="{{ _triggerObserer }}"></test>

而js没有把Constants带进去

换一些其他做法则可以正常计算:

        const aa = "aa";
        const {aa: aa2} = Constants;
        return <Test val={aa === aa2} />;

        const aa = "aa";
        const val = aa === Constants.aa;
        return <Test val={val} />;

        const aa = "aa";
        return <Test val={aa === `${Constants.aa}`} />;