webpack的单独打包css

require("mini-css-extract-plugin");//提取css到单独文件的插件

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
const webpack = require('webpack');

const MiniCssExtractPlugin = require("mini-css-extract-plugin");//提取css到单独文件的插件

module.exports = {
    entry: {
        app: './src/index.js'
    },
    output: {
        publicPath: '/',
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    devtool: 'inline-source-map',
    devServer: {
        contentBase: './dist',
        hot: true
    },
    plugins: [
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({
            title: 'Output Management'
        }),
        new webpack.HotModuleReplacementPlugin(),
        new MiniCssExtractPlugin({
            filename: "css/[name].css",////都提到build目录下的css目录中
            chunkFilename: "[id].css"
        })
    ],
    mode: "production",
    module: {
        rules: [
            {
                test: /\.css$/,
                use: [
                    MiniCssExtractPlugin.loader,//注意这边
                    "css-loader"
                ]
            },
            {
                test: /\.(png|svg|jpg|gif)$/,
                use: [
                    'file-loader'
                ]

            },
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/,
                use: [
                    'file-loader'
                ]
            }
        ]

    }

};