const webpack = require('webpack') const config = require('sapper/config/webpack.js') const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin const LodashModuleReplacementPlugin = require('lodash-webpack-plugin') const terser = require('./terser.config') const CircularDependencyPlugin = require('circular-dependency-plugin') const { mode, dev } = require('./shared.config') module.exports = { entry: config.client.entry(), output: Object.assign(config.client.output(), { globalObject: 'this' }), // enables HMR in workers resolve: { extensions: ['.js', '.json', '.html'], mainFields: ['svelte', 'module', 'browser', 'main'] }, mode, module: { rules: [ { test: /\.html$/, use: { loader: 'svelte-loader', options: { dev, hydratable: true, store: true, hotReload: dev } } } ].filter(Boolean) }, node: { setImmediate: false }, optimization: dev ? {} : { minimizer: [ terser() ], splitChunks: { chunks: 'async', minSize: 5000, maxAsyncRequests: Infinity, maxInitialRequests: Infinity, name: false // these chunk names can be annoyingly long } }, plugins: [ new webpack.NormalModuleReplacementPlugin( /\/_database\/database\.js$/, // this version plays nicer with IDEs './database.prod.js' ), new LodashModuleReplacementPlugin({ paths: true }), new CircularDependencyPlugin({ exclude: /node_modules/, failOnError: true, cwd: process.cwd() }) ].concat(dev ? [ new webpack.HotModuleReplacementPlugin({ requestTimeout: 120000 }) ] : [ new webpack.DefinePlugin({ 'process.browser': true, 'process.env.NODE_ENV': JSON.stringify(mode) }), new BundleAnalyzerPlugin({ // generates report.html and stats.json analyzerMode: 'static', generateStatsFile: true, statsOptions: { // allows usage with http://chrisbateman.github.io/webpack-visualizer/ chunkModules: true }, openAnalyzer: false, logLevel: 'silent' // do not bother Webpacker, who runs with --json and parses stdout }) ]), devtool: dev ? 'inline-source-map' : 'source-map', performance: { hints: dev ? false : 'error' // fail if we exceed the default performance budgets } }