找不到模块:无法解析“C:\react-form-validation-demo\src"中的“bootstrap/dist/css/bootstrap-theme.css" [英] Module not found: Can't resolve 'bootstrap/dist/css/bootstrap-theme.css' in 'C:\react-form-validation-demo\src'

问题描述

我是 react.js 的新手.我一直在遵循 how-to-do-simple 中的说明-form-validation-in-reactjs 并且我可以运行 http://localhost:3000/

但是在 index.js 中添加 bootstrap 后，我得到这个错误

<块引用>

无法编译 ./src/index.js 模块未找到:无法解析'bootstrap/dist/css/bootstrap-theme.css' 中'C:\react-form-validation-demo\src'

从'react'导入React；从 'react-dom' 导入 ReactDOM；导入'./index.css';导入 'bootstrap/dist/css/bootstrap.css';导入 'bootstrap/dist/css/bootstrap-theme.css';从'./App'导入应用程序；从 './registerServiceWorker' 导入 registerServiceWorker；ReactDOM.render(, document.getElementById('root'));注册服务工作者()；

如果我删除下面这两行，它会起作用:

import 'bootstrap/dist/css/bootstrap.css';导入 'bootstrap/dist/css/bootstrap-theme.css';

解决方案

在 Bootstrap 版本 4 中，根据 github 中的问题，文件 'bootstrap-theme.css' 已被删除:https://github.com/twbs/bootstrap/issues/21078，在 更改历史记录您可以获得详细信息

要使用第 4 版，请删除导入，否则降级到第 3 版.

I am newbie in react.js. I have been following instruction in how-to-do-simple-form-validation-in-reactjs and I can run http://localhost:3000/

But after adding bootstrap in index.js, I got this error

Failed to compile ./src/index.js Module not found: Can't resolve
'bootstrap/dist/css/bootstrap-theme.css' in
'C:\react-form-validation-demo\src'

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import 'bootstrap/dist/css/bootstrap.css';
import 'bootstrap/dist/css/bootstrap-theme.css';
import App from './App';
import registerServiceWorker from './registerServiceWorker';

ReactDOM.render(<App />, document.getElementById('root'));
registerServiceWorker();

If I remove these two lines below, it works:

import 'bootstrap/dist/css/bootstrap.css';
import 'bootstrap/dist/css/bootstrap-theme.css';

解决方案

In Bootstrap version 4, the file 'bootstrap-theme.css' have been removed, according to issue in github: https://github.com/twbs/bootstrap/issues/21078, in Change History you get detail

To use version 4 remove the import this, or else downgrade to version 3.

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