无法导入react组件链接多个页面
我已经有一个简单的反应应用程序,其中有几个不同的链接页面已经有一段时间了。它已经运行了几个月,但我一定在上周做了一些事情,使我所有导出的模块都未定义。我遇到以下错误:
Error: Element type is invalid: expected a string (for built-in components) or a class/function
(for composite components) but got: undefined. You likely forgot to export your component from
the file it's defined in, or you might have mixed up default and named imports.
在我的项目文件夹中,我有我的 src 文件夹,其中有我的 index.js 文件,用于配置我的所有不同模块。如下:
import { React } from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import reportWebVitals from './reportWebVitals';
import { BrowserRouter as Router, Route, Routes } from "react-router-dom";
import {
Navigation,
Home,
Register,
Dashboard,
Marketplace,
Signup,
Monitor,
DSODash
} from "./Components";
ReactDOM.render(
<Router>
<Navigation />
<Routes>
<Route path="/" element={<Home />} />
<Route path="/register" element={<Register />} />
<Route path="/dashboard" element={<Dashboard />} />
<Route path="/marketplace" element={<Marketplace />} />
<Route path="/signup" element={<Signup />}/>
<Route path="/monitor" element={<Monitor />}/>
<Route path="/dso" element={<DSODash />}/>
</Routes>
</Router>,
document.getElementById("root")
);
reportWebVitals();
在我的 src 文件夹中有一个名为 Components 的文件夹。我有几个构建单独页面的 .jsx 文件。这些文件中的每一个都被编写为函数,文件以结尾。
export default (function name);
此外,在我的 Components 文件夹中,我有一个导出每个组件的索引文件。下面是代码:
export { default as Navigation } from "./Navigation";
export { default as Home } from "./Home";
export { default as Register } from "./Register";
export { default as Dashboard } from "./Dashboard";
export { default as Marketplace } from "./Marketplace";
export { default as Signup } from "./Signup";
export { default as Monitor } from "./Monitor";
export { default as DSODash } from "./DSODash"
export { default as Base } from "./base"
似乎我的组件无法导出并导致平台出现错误。我在这里迷路了,任何帮助都会很棒。也许我需要将 src/Components 文件夹中的 index.js 文件导入到 src 文件夹中的 index.js 文件。谢谢!
I have had a simple react app with several different linked pages for quite some time now. It has been functioning for months, but I must have done something in the last week to make all of my exported modules undefined. I run into the following error:
Error: Element type is invalid: expected a string (for built-in components) or a class/function
(for composite components) but got: undefined. You likely forgot to export your component from
the file it's defined in, or you might have mixed up default and named imports.
Within my project folder, I have my my src folder which has my index.js file that configures all of my different modules. Here it is below:
import { React } from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import reportWebVitals from './reportWebVitals';
import { BrowserRouter as Router, Route, Routes } from "react-router-dom";
import {
Navigation,
Home,
Register,
Dashboard,
Marketplace,
Signup,
Monitor,
DSODash
} from "./Components";
ReactDOM.render(
<Router>
<Navigation />
<Routes>
<Route path="/" element={<Home />} />
<Route path="/register" element={<Register />} />
<Route path="/dashboard" element={<Dashboard />} />
<Route path="/marketplace" element={<Marketplace />} />
<Route path="/signup" element={<Signup />}/>
<Route path="/monitor" element={<Monitor />}/>
<Route path="/dso" element={<DSODash />}/>
</Routes>
</Router>,
document.getElementById("root")
);
reportWebVitals();
Within my src folder is a folder called Components. I have several .jsx files that build individual pages. Each of these files are written as functions and the file ends with
export default (function name);
Also within my Components folder, I have an index file that exports each component. Here is the code below:
export { default as Navigation } from "./Navigation";
export { default as Home } from "./Home";
export { default as Register } from "./Register";
export { default as Dashboard } from "./Dashboard";
export { default as Marketplace } from "./Marketplace";
export { default as Signup } from "./Signup";
export { default as Monitor } from "./Monitor";
export { default as DSODash } from "./DSODash"
export { default as Base } from "./base"
It seems that somehow my components are failing to export and causes the platform to run into an error. I am lost here, and any help would be great. Maybe I need to be importing my index.js file from within the src/Components folder to the index.js file in the src folder. Thanks!
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
我在同一文件夹中有一个 truffle-config.js 文件。不知何故,这个配置文件一定已经干扰了反应渲染。
I had a truffle-config.js file in the same folder. Somehow this configuration file must have been interfering with the react rendering.