315 lines
9 KiB
JavaScript
315 lines
9 KiB
JavaScript
const fs = require('fs');
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const path = require('path');
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const glob = require('glob');
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const webpack = require('webpack');
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const StatsWriterPlugin = require('webpack-stats-plugin').StatsWriterPlugin;
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const CopyWebpackPlugin = require('copy-webpack-plugin');
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const CompressionPlugin = require('compression-webpack-plugin');
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const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
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const ROOT_PATH = path.resolve(__dirname, '..');
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const IS_PRODUCTION = process.env.NODE_ENV === 'production';
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const IS_DEV_SERVER = process.argv.join(' ').indexOf('webpack-dev-server') !== -1;
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const DEV_SERVER_HOST = process.env.DEV_SERVER_HOST || 'localhost';
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const DEV_SERVER_PORT = parseInt(process.env.DEV_SERVER_PORT, 10) || 3808;
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const DEV_SERVER_LIVERELOAD = process.env.DEV_SERVER_LIVERELOAD !== 'false';
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const WEBPACK_REPORT = process.env.WEBPACK_REPORT;
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const NO_COMPRESSION = process.env.NO_COMPRESSION;
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let autoEntriesCount = 0;
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let watchAutoEntries = [];
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const defaultEntries = ['./main'];
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function generateEntries() {
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// generate automatic entry points
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const autoEntries = {};
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const autoEntriesMap = {};
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const pageEntries = glob.sync('pages/**/index.js', {
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cwd: path.join(ROOT_PATH, 'app/assets/javascripts'),
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});
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watchAutoEntries = [path.join(ROOT_PATH, 'app/assets/javascripts/pages/')];
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function generateAutoEntries(path, prefix = '.') {
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const chunkPath = path.replace(/\/index\.js$/, '');
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const chunkName = chunkPath.replace(/\//g, '.');
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autoEntriesMap[chunkName] = `${prefix}/${path}`;
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}
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pageEntries.forEach(path => generateAutoEntries(path));
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const autoEntryKeys = Object.keys(autoEntriesMap);
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autoEntriesCount = autoEntryKeys.length;
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// import ancestor entrypoints within their children
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autoEntryKeys.forEach(entry => {
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const entryPaths = [autoEntriesMap[entry]];
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const segments = entry.split('.');
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while (segments.pop()) {
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const ancestor = segments.join('.');
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if (autoEntryKeys.includes(ancestor)) {
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entryPaths.unshift(autoEntriesMap[ancestor]);
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}
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}
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autoEntries[entry] = defaultEntries.concat(entryPaths);
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});
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const manualEntries = {
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default: defaultEntries,
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raven: './raven/index.js',
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};
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return Object.assign(manualEntries, autoEntries);
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}
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const config = {
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mode: IS_PRODUCTION ? 'production' : 'development',
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context: path.join(ROOT_PATH, 'app/assets/javascripts'),
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entry: generateEntries,
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output: {
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path: path.join(ROOT_PATH, 'public/assets/webpack'),
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publicPath: '/assets/webpack/',
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filename: IS_PRODUCTION ? '[name].[chunkhash:8].bundle.js' : '[name].bundle.js',
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chunkFilename: IS_PRODUCTION ? '[name].[chunkhash:8].chunk.js' : '[name].chunk.js',
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globalObject: 'this', // allow HMR and web workers to play nice
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},
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optimization: {
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nodeEnv: false,
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runtimeChunk: 'single',
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splitChunks: {
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maxInitialRequests: 4,
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cacheGroups: {
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default: false,
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common: () => ({
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priority: 20,
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name: 'main',
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chunks: 'initial',
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minChunks: autoEntriesCount * 0.9,
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}),
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vendors: {
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priority: 10,
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chunks: 'async',
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test: /[\\/](node_modules|vendor[\\/]assets[\\/]javascripts)[\\/]/,
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},
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commons: {
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chunks: 'all',
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minChunks: 2,
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reuseExistingChunk: true,
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},
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},
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},
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},
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module: {
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rules: [
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{
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test: /\.js$/,
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exclude: /(node_modules|vendor\/assets)/,
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loader: 'babel-loader',
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options: {
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cacheDirectory: path.join(ROOT_PATH, 'tmp/cache/babel-loader'),
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},
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},
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{
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test: /\.vue$/,
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loader: 'vue-loader',
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},
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{
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test: /\.svg$/,
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loader: 'raw-loader',
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},
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{
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test: /\.(gif|png)$/,
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loader: 'url-loader',
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options: { limit: 2048 },
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},
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{
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test: /\_worker\.js$/,
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use: [
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{
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loader: 'worker-loader',
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options: {
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name: '[name].[hash:8].worker.js',
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},
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},
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'babel-loader',
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],
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},
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{
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test: /\.(worker(\.min)?\.js|pdf|bmpr)$/,
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exclude: /node_modules/,
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loader: 'file-loader',
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options: {
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name: '[name].[hash:8].[ext]',
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},
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},
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{
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test: /katex.min.css$/,
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include: /node_modules\/katex\/dist/,
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use: [
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{ loader: 'style-loader' },
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{
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loader: 'css-loader',
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options: {
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name: '[name].[hash:8].[ext]',
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},
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},
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],
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},
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{
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test: /\.(eot|ttf|woff|woff2)$/,
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include: /node_modules\/katex\/dist\/fonts/,
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loader: 'file-loader',
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options: {
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name: '[name].[hash:8].[ext]',
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},
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},
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{
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test: /monaco-editor\/\w+\/vs\/loader\.js$/,
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use: [
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{ loader: 'exports-loader', options: 'l.global' },
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{ loader: 'imports-loader', options: 'l=>{},this=>l,AMDLoader=>this,module=>undefined' },
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],
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},
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],
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noParse: [/monaco-editor\/\w+\/vs\//],
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strictExportPresence: true,
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},
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plugins: [
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// manifest filename must match config.webpack.manifest_filename
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// webpack-rails only needs assetsByChunkName to function properly
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new StatsWriterPlugin({
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filename: 'manifest.json',
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transform: function(data, opts) {
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const stats = opts.compiler.getStats().toJson({
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chunkModules: false,
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source: false,
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chunks: false,
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modules: false,
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assets: true,
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});
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return JSON.stringify(stats, null, 2);
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},
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}),
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// prevent pikaday from including moment.js
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new webpack.IgnorePlugin(/moment/, /pikaday/),
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// fix legacy jQuery plugins which depend on globals
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new webpack.ProvidePlugin({
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$: 'jquery',
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jQuery: 'jquery',
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}),
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// copy pre-compiled vendor libraries verbatim
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new CopyWebpackPlugin([
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{
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from: path.join(
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ROOT_PATH,
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`node_modules/monaco-editor/${IS_PRODUCTION ? 'min' : 'dev'}/vs`
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),
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to: 'monaco-editor/vs',
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transform: function(content, path) {
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if (/\.js$/.test(path) && !/worker/i.test(path) && !/typescript/i.test(path)) {
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return (
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'(function(){\n' +
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'var define = this.define, require = this.require;\n' +
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'window.define = define; window.require = require;\n' +
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content +
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'\n}.call(window.__monaco_context__ || (window.__monaco_context__ = {})));'
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);
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}
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return content;
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},
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},
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]),
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],
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resolve: {
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extensions: ['.js'],
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alias: {
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'~': path.join(ROOT_PATH, 'app/assets/javascripts'),
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emojis: path.join(ROOT_PATH, 'fixtures/emojis'),
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empty_states: path.join(ROOT_PATH, 'app/views/shared/empty_states'),
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icons: path.join(ROOT_PATH, 'app/views/shared/icons'),
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images: path.join(ROOT_PATH, 'app/assets/images'),
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vendor: path.join(ROOT_PATH, 'vendor/assets/javascripts'),
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vue$: 'vue/dist/vue.esm.js',
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spec: path.join(ROOT_PATH, 'spec/javascripts'),
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},
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},
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// sqljs requires fs
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node: {
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fs: 'empty',
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},
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};
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if (IS_PRODUCTION) {
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config.devtool = 'source-map';
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// compression can require a lot of compute time and is disabled in CI
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if (!NO_COMPRESSION) {
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config.plugins.push(new CompressionPlugin());
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}
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}
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if (IS_DEV_SERVER) {
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config.devtool = 'cheap-module-eval-source-map';
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config.devServer = {
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host: DEV_SERVER_HOST,
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port: DEV_SERVER_PORT,
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disableHostCheck: true,
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headers: { 'Access-Control-Allow-Origin': '*' },
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stats: 'errors-only',
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hot: DEV_SERVER_LIVERELOAD,
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inline: DEV_SERVER_LIVERELOAD,
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};
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config.plugins.push({
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apply(compiler) {
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compiler.hooks.emit.tapAsync('WatchForChangesPlugin', (compilation, callback) => {
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const missingDeps = Array.from(compilation.missingDependencies);
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const nodeModulesPath = path.join(ROOT_PATH, 'node_modules');
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const hasMissingNodeModules = missingDeps.some(
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file => file.indexOf(nodeModulesPath) !== -1
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);
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// watch for changes to missing node_modules
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if (hasMissingNodeModules) compilation.contextDependencies.add(nodeModulesPath);
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// watch for changes to automatic entrypoints
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watchAutoEntries.forEach(watchPath => compilation.contextDependencies.add(watchPath));
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// report our auto-generated bundle count
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console.log(
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`${autoEntriesCount} entries from '/pages' automatically added to webpack output.`
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);
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callback();
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});
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},
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});
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if (DEV_SERVER_LIVERELOAD) {
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config.plugins.push(new webpack.HotModuleReplacementPlugin());
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}
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}
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if (WEBPACK_REPORT) {
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config.plugins.push(
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new BundleAnalyzerPlugin({
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analyzerMode: 'static',
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generateStatsFile: true,
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openAnalyzer: false,
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reportFilename: path.join(ROOT_PATH, 'webpack-report/index.html'),
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statsFilename: path.join(ROOT_PATH, 'webpack-report/stats.json'),
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})
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);
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}
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module.exports = config;
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