Webpack 3: css-loader style-loader error

Question

我收到以下错误：

./common/app 中的错误.css模块解析失败： E：\通用启动器\通用\应用.css 意外令牌 (1：5( 您可能会 需要适当的加载程序来处理此文件类型。

| body {
|     background-color: orange;
| }

我的应用.js文件：

import React from 'react';
require('./app.css');
const App = () => <div>Hello from React</div>;
export default App;

My webpack.config：

const webpack = require('webpack');
const path = require('path');
const ExtractTextWebpackPlugin = require('extract-text-webpack-plugin');
const HTMLWebpackPlugin = require('html-webpack-plugin');
module.exports = {
devtool: 'inline-source-map',
entry: [
'react-hot-loader/patch',
'webpack-dev-server/client?http://localhost:3001',
'webpack/hot/only-dev-server',
'./client/index',
],
target: 'web',

---

module: {
rules: [
{
enforce: 'pre',
exclude: /node_modules/,
loader: 'eslint-loader',
options: {
emitWarning: true
},
test: /.(js|jsx)$/
},
{
exclude: /node_modules/,
test: /.js?$/,
use: ['babel-loader']},

为什么这是错误的并导致问题

?!?!?!?!

// embed styles in styles folder
{
test: /.css$/,
use: ExtractTextWebpackPlugin.extract({
fallback: 'style-loader',
use: ['css-loader']
})
},

---

// fonts
{
test: /.(woff|woff2|eot|ttf|svg)$/,
exclude: /node_modules/,
loader: 'url-loader?limit=1024&name=fonts/[name].[ext]'
},
// examine img file size
{
test: /.(jpe?g|png|svg|gif)$/,
use: [{
loader: 'url-loader',
options: {
limit: 40000,
name: 'images/[name].[hash].[ext]',
}
},
{
loader: 'image-webpack-loader',
}
]
}
],
},

---

plugins: [
new ExtractTextWebpackPlugin('./css/styles.css'),
new webpack.NamedModulesPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoEmitOnErrorsPlugin(),
new HTMLWebpackPlugin({
template: './client/template/index.html',
}),
new webpack.DefinePlugin({
'process.env': { BUILD_TARGET: JSON.stringify('client') },
}),
],

---

devServer: {
host: 'localhost',
port: 3001,
historyApiFallback: true,
hot: true,
},
output: {
path: path.join(__dirname, '.build'),
publicPath: 'http://localhost:3001/',
filename: 'client.js',
},
};

到目前为止，在 Webpack 3 上的帮助很少。 有什么想法吗？ 谢谢！！

Answer 1

试试这个： 在 App.js 文件中，将require('./app.css');替换为import './app.css'