由于缺少对Commonjs模块的支持,从react_rails gem获得令人沮丧的感觉,我正在从netguru测试
react_webpack_rails gem.但从那以后,我得到了一个不变的违规.
原文链接：https://www.f2er.com/react/300722.html例如,如果我在ES6语法中编写一个简单的Hello World组件：
import React from 'react'; class tasksBox extends React.Component { render() { return <div>Hello World</div>; } } export default tasksBox;
提出这些错误：
Warning: React.createElement: type should not be null,undefined,boolean,or number. It should be a string (for DOM elements) or a ReactClass (for composite components). Uncaught Error: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.
您的帮助将非常感谢,我无法确定错误来自哪里.
