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webpack.config.js
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webpack.config.js
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const webpack = require('webpack');
const path = require('path');
const CopyPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const config = {
entry: ['react-hot-loader/patch', './src/index.js'],
output: {
path: path.resolve(__dirname, 'dist'),
filename: '[name].[contenthash].js',
},
module: {
rules: [
{
test: /\.(js|jsx)$/,
use: 'babel-loader',
exclude: /node_modules/,
},
{
test: /\.css$/,
use: [MiniCssExtractPlugin.loader, 'css-loader'],
},
{
test: /\.scss$/,
use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
},
{
test: /\.svg$/,
use: 'file-loader',
},
{
test: /\.png$/,
use: [
{
loader: 'url-loader',
options: {
mimetype: 'image/png',
},
},
],
},
],
},
devServer: {
static: {
directory: './dist',
},
},
plugins: [
new CopyPlugin({
patterns: [{ from: 'public/index.html' }],
}),
new HtmlWebpackPlugin({
templateContent: ({ htmlWebpackPlugin }) =>
'<!DOCTYPE html><html><head><meta charset="utf-8"><title>' +
htmlWebpackPlugin.options.title +
'</title></head><body><div id="app"></div></body></html>',
filename: 'index.html',
}),
new MiniCssExtractPlugin(),
new BundleAnalyzerPlugin({
analyzerMode: 'static',
openAnalyzer: false,
}),
new CleanWebpackPlugin(),
],
optimization: {
runtimeChunk: 'single',
splitChunks: {
cacheGroups: {
vendor: {
test: /[\\/]node_modules[\\/]/,
name: 'vendors',
chunks: 'all',
},
},
},
},
};
module.exports = (env, argv) => {
if (argv.hot) {
// Cannot use 'contenthash' when hot reloading is enabled.
config.output.filename = '[name].[hash].js';
}
return config;
};