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webpack.config.js
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webpack.config.js
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/* eslint-disable no-undef */
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ProgressBarPlugin = require('progress-bar-webpack-plugin');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer')
.BundleAnalyzerPlugin;
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const webpack = require('webpack');
module.exports = (env) => {
const isProduction = env && env.production;
return {
mode: isProduction ? 'production' : 'development',
devtool: isProduction ? false : 'eval-cheap-module-source-map',
entry: {
path: './src/index.js',
},
output: {
path: path.resolve(__dirname, 'dist'),
filename: 'bundle.js',
chunkFilename: 'chunks/[name].[chunkhash:8].js',
},
module: {
rules: [
{
test: /\.(jsx|js)$/,
exclude: /node_modules/,
use: ['babel-loader?cacheDirectory=true'],
},
{
test: /\.scss$/,
// use: ['style-loader', 'css-loader', 'sass-loader'],
use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
},
{
test: /\.css$/,
// use: ['style-loader', 'css-loader'],
use: [MiniCssExtractPlugin.loader, 'css-loader'],
},
],
},
devServer: {
compress: true,
port: 3010,
hot: true,
open: true,
},
plugins: [
...(isProduction
? [
// 生产模式下启用的插件
new BundleAnalyzerPlugin(),
]
: [
// 开发模式下启用的插件
// 模块热替换
new webpack.NamedModulesPlugin(),
new webpack.HotModuleReplacementPlugin(),
]),
// -- 任何模式下都启用的插件
new HtmlWebpackPlugin({
template: 'public/index.html',
}),
new ProgressBarPlugin(),
new MiniCssExtractPlugin({
filename: 'css/[name].[contenthash].css',
chunkFilename: 'css/[id].[contenthash].css',
}),
// 变量注入
new webpack.DefinePlugin({
__DEV__: !isProduction,
}),
new CleanWebpackPlugin(),
],
resolve: {
alias: {
...(isProduction
? {}
: {
// 'react-dom': '@hot-loader/react-dom', // react 热重载
}), // 开发模式插件
'@': path.resolve(__dirname, 'src'),
},
extensions: ['.js', '.jsx', '.json'],
},
};
};