无法读取未定义的属性'string' React.PropTypes | LayoutPropTypes.js [英] Cannot read property 'string' of undefined | React.PropTypes | LayoutPropTypes.js

问题描述

删除并重新安装我的node_modules文件夹后，我遇到了一个我在LayoutPropTypes.js文件中无法理解的问题。

After deleting and reinstalling my node_modules folder, I'm facing an issue that I don't understand in LayoutPropTypes.js file.

In node_modules / react-native / Libraries / StyleSheet / LayoutPropTypes.js
以下变量未定义： var ReactPropTypes = require（'React'）。PropTypes;

react-native：0.45.1
react：16.0.0-alpha.12

react-native: 0.45.1 react: 16.0.0-alpha.12

推荐答案

React .PropTypes现已弃用：

注意：从React v15.5开始，不推荐使用React.PropTypes。请改用
prop-types库。

Note: React.PropTypes is deprecated as of React v15.5. Please use the prop-types library instead.

您需要添加 prop-types 包现在分开。该错误很可能刚刚开始显示，因为您删除了 node_modules 文件夹，然后重新安装了升级 react 版本的所有内容。

You need to add the prop-types package separately now. The error most likely just started to show up because you deleted your node_modules folder and then reinstalled everything which upgraded your react version.

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