CSS modules not working in loadable-components in server side rendering - reactjs

Question

I am trying to add the loadable components library for code splitting in my React universal app. I have CSS modules in my project, and it used to work fine. But then I added the loadable component library for code splitting. Now the server is working, but the CSS is not, and the pages are loading without CSS. I have checked the stats.json file and it is missing the CSS files.
webpack.config.js:
'use strict';
const fs = require('fs');
const path = require('path');
const webpack = require('webpack');
const resolve = require('resolve');
const PnpWebpackPlugin = require('pnp-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
const InlineChunkHtmlPlugin = require('react-dev-utils/InlineChunkHtmlPlugin');
const TerserPlugin = require('terser-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const safePostCssParser = require('postcss-safe-parser');
const ManifestPlugin = require('webpack-manifest-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const WorkboxWebpackPlugin = require('workbox-webpack-plugin');
const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const getCSSModuleLocalIdent = require('react-dev-utils/getCSSModuleLocalIdent');
// const ESLintPlugin = require('eslint-webpack-plugin');
const paths = require('./paths');
const modules = require('./modules');
const getClientEnvironment = require('./env');
const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
const ForkTsCheckerWebpackPlugin = require('react-dev-utils/ForkTsCheckerWebpackPlugin');
const typescriptFormatter = require('react-dev-utils/typescriptFormatter');
const ReactRefreshWebpackPlugin = require('#pmmmwh/react-refresh-webpack-plugin');
const LoadablePlugin = require('#loadable/webpack-plugin')
const postcssNormalize = require('postcss-normalize');
const appPackageJson = require(paths.appPackageJson);
const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
const webpackDevClientEntry = require.resolve(
'react-dev-utils/webpackHotDevClient'
);
const reactRefreshOverlayEntry = require.resolve(
'react-dev-utils/refreshOverlayInterop'
);
const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false';
const imageInlineSizeLimit = parseInt(
process.env.IMAGE_INLINE_SIZE_LIMIT || '10000'
);
const useTypeScript = fs.existsSync(paths.appTsConfig);
const swSrc = paths.swSrc;
const cssRegex = /\.css$/;
const cssModuleRegex = /\.css$/;
const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;
const hasJsxRuntime = (() => {
if (process.env.DISABLE_NEW_JSX_TRANSFORM === 'true') {
return false;
}
try {
require.resolve('react/jsx-runtime');
return true;
} catch (e) {
return false;
}
})();
module.exports = function (webpackEnv) {
const isEnvDevelopment = webpackEnv === 'development';
const isEnvProduction = webpackEnv === 'production';
const isEnvProductionProfile =
isEnvProduction && process.argv.includes('--profile');
const env = getClientEnvironment(paths.publicUrlOrPath.slice(0, -1));
const shouldUseReactRefresh = env.raw.FAST_REFRESH;
const getStyleLoaders = (cssOptions, preProcessor) => {
const loaders = [
isEnvDevelopment && require.resolve('style-loader'),
isEnvProduction && {
loader: MiniCssExtractPlugin.loader,
index.html folder
// in production `paths.publicUrlOrPath` can be a relative path
options: paths.publicUrlOrPath.startsWith('.')
? { publicPath: '../../' }
: {},
},
{
loader: require.resolve('css-loader'),
options: cssOptions,
},
{
loader: require.resolve('postcss-loader'),
options: {
ident: 'postcss',
plugins: () => [
require('postcss-flexbugs-fixes'),
require('postcss-preset-env')({
autoprefixer: {
flexbox: 'no-2009',
},
stage: 3,
}),
postcssNormalize(),
],
sourceMap: isEnvProduction ? shouldUseSourceMap : isEnvDevelopment,
},
},
].filter(Boolean);
if (preProcessor) {
loaders.push(
{
loader: require.resolve('resolve-url-loader'),
options: {
sourceMap: isEnvProduction ? shouldUseSourceMap : isEnvDevelopment,
root: paths.appSrc,
},
},
{
loader: require.resolve(preProcessor),
options: {
sourceMap: true,
},
}
);
}
return loaders;
};
return {
mode: isEnvProduction ? 'production' : isEnvDevelopment && 'development',
// Stop compilation early in production
bail: isEnvProduction,
devtool: isEnvProduction
? shouldUseSourceMap
? 'source-map'
: false
: isEnvDevelopment && 'cheap-module-source-map',
entry:
isEnvDevelopment && !shouldUseReactRefresh
? [
webpackDevClientEntry,
paths.appIndexJs,
]
: paths.appIndexJs,
output: {
path: isEnvProduction ? paths.appBuild : undefined,
pathinfo: isEnvDevelopment,
filename: isEnvProduction
? 'static/js/[name].[contenthash:8].js'
: isEnvDevelopment && 'static/js/bundle.js',
futureEmitAssets: true,
chunkFilename: isEnvProduction
? 'static/js/[name].[contenthash:8].chunk.js'
: isEnvDevelopment && 'static/js/[name].chunk.js',
// We inferred the "public path" (such as / or /my-project) from homepage.
publicPath: paths.publicUrlOrPath,
devtoolModuleFilenameTemplate: isEnvProduction
? info =>
path
.relative(paths.appSrc, info.absoluteResourcePath)
.replace(/\\/g, '/')
: isEnvDevelopment &&
(info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')),
globalObject: 'this',
},
optimization: {
minimize: isEnvProduction,
minimizer: [
new TerserPlugin({
terserOptions: {
parse: {
ecma: 8,
},
compress: {
ecma: 5,
warnings: false,
inline: 2,
},
mangle: {
safari10: true,
},
// Added for profiling in devtools
keep_classnames: isEnvProductionProfile,
keep_fnames: isEnvProductionProfile,
output: {
ecma: 5,
comments: false,
ascii_only: true,
},
},
sourceMap: shouldUseSourceMap,
}),
new OptimizeCSSAssetsPlugin({
cssProcessorOptions: {
parser: safePostCssParser,
map: shouldUseSourceMap
? {
inline: false,
annotation: true,
}
: false,
},
cssProcessorPluginOptions: {
preset: ['default', { minifyFontValues: { removeQuotes: false } }],
},
}),
],
splitChunks: {
chunks: 'all',
name: false,
},
runtimeChunk: {
name: entrypoint => `runtime-${entrypoint.name}`,
},
},
resolve: {
modules: ['node_modules', paths.appNodeModules].concat(
modules.additionalModulePaths || []
),
extensions: paths.moduleFileExtensions
.map(ext => `.${ext}`)
.filter(ext => useTypeScript || !ext.includes('ts')),
alias: {
'react-native': 'react-native-web',
...(isEnvProductionProfile && {
'react-dom$': 'react-dom/profiling',
'scheduler/tracing': 'scheduler/tracing-profiling',
}),
...(modules.webpackAliases || {}),
},
plugins: [
new ModuleScopePlugin(paths.appSrc, [
paths.appPackageJson,
reactRefreshOverlayEntry,
]),
],
},
resolveLoader: {
plugins: [
PnpWebpackPlugin.moduleLoader(module),
],
},
module: {
strictExportPresence: true,
rules: [
{ parser: { requireEnsure: false } },
{
oneOf: [
{
test: [/\.avif$/],
loader: require.resolve('url-loader'),
options: {
limit: imageInlineSizeLimit,
mimetype: 'image/avif',
name: 'static/media/[name].[hash:8].[ext]',
},
},
{
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
loader: require.resolve('url-loader'),
options: {
limit: imageInlineSizeLimit,
name: 'static/media/[name].[hash:8].[ext]',
},
},
{
test: /\.(js|mjs|jsx|ts|tsx)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
customize: require.resolve(
'babel-preset-react-app/webpack-overrides'
),
presets: [
[
require.resolve('babel-preset-react-app'),
{
runtime: hasJsxRuntime ? 'automatic' : 'classic',
},
],
],
plugins: [
[
require.resolve('babel-plugin-named-asset-import'),
{
loaderMap: {
svg: {
ReactComponent:
'#svgr/webpack?-svgo,+titleProp,+ref![path]',
},
},
},
],
isEnvDevelopment &&
shouldUseReactRefresh &&
require.resolve('react-refresh/babel'),
].filter(Boolean),
cacheCompression: false,
compact: isEnvProduction,
},
},
{
test: /\.(js|mjs)$/,
exclude: /#babel(?:\/|\\{1,2})runtime/,
loader: require.resolve('babel-loader'),
options: {
babelrc: false,
configFile: false,
compact: false,
presets: [
[
require.resolve('babel-preset-react-app/dependencies'),
{ helpers: true },
],
],
cacheDirectory: true,
sourceMaps: shouldUseSourceMap,
inputSourceMap: shouldUseSourceMap,
},
},
{
test: cssRegex,
exclude: cssModuleRegex,
use: getStyleLoaders({
importLoaders: 1,
sourceMap: isEnvProduction
? shouldUseSourceMap
: isEnvDevelopment,
}),
sideEffects: true,
},
{
test: cssModuleRegex,
use: getStyleLoaders({
importLoaders: 1,
sourceMap: isEnvProduction
? shouldUseSourceMap
: isEnvDevelopment,
modules: {
getLocalIdent: getCSSModuleLocalIdent,
},
}),
},
{
loader: require.resolve('file-loader'),
exclude: [/\.(js|mjs|jsx|ts|tsx)$/, /\.html$/, /\.json$/],
options: {
name: 'static/media/[name].[hash:8].[ext]',
},
},
],
},
],
},
plugins: [
new LoadablePlugin({filename:'../dist/loadable-stats.json',writeToDisk:true}),
// Generates an `index.html` file with the <script> injected.
new LoadablePlugin(),
new HtmlWebpackPlugin(
Object.assign(
{},
{
inject: true,
template: paths.appHtml,
},
isEnvProduction
? {
minify: {
removeComments: true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
}
: undefined
)
),
isEnvDevelopment &&
shouldUseReactRefresh &&
new ReactRefreshWebpackPlugin({
overlay: {
entry: webpackDevClientEntry,
sockIntegration: false,
},
}),
isEnvDevelopment && new CaseSensitivePathsPlugin(),
isEnvDevelopment &&
new WatchMissingNodeModulesPlugin(paths.appNodeModules),
isEnvProduction &&
new MiniCssExtractPlugin({
filename: 'static/css/[name].[contenthash:8].css',
chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
}),
new ManifestPlugin({
fileName: 'asset-manifest.json',
publicPath: paths.publicUrlOrPath,
generate: (seed, files, entrypoints) => {
const manifestFiles = files.reduce((manifest, file) => {
manifest[file.name] = file.path;
return manifest;
}, seed);
const entrypointFiles = entrypoints.main.filter(
fileName => !fileName.endsWith('.map')
);
return {
files: manifestFiles,
entrypoints: entrypointFiles,
};
},
}),
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
isEnvProduction &&
fs.existsSync(swSrc) &&
new WorkboxWebpackPlugin.InjectManifest({
swSrc,
dontCacheBustURLsMatching: /\.[0-9a-f]{8}\./,
exclude: [/\.map$/, /asset-manifest\.json$/, /LICENSE/],
template/pwa/issues/13#issuecomment-722667270
maximumFileSizeToCacheInBytes: 5 * 1024 * 1024,
}),
// TypeScript type checking
useTypeScript &&
new ForkTsCheckerWebpackPlugin({
typescript: resolve.sync('typescript', {
basedir: paths.appNodeModules,
}),
async: isEnvDevelopment,
checkSyntacticErrors: true,
resolveModuleNameModule: process.versions.pnp
? `${__dirname}/pnpTs.js`
: undefined,
resolveTypeReferenceDirectiveModule: process.versions.pnp
? `${__dirname}/pnpTs.js`
: undefined,
tsconfig: paths.appTsConfig,
reportFiles: [
'../**/src/**/*.{ts,tsx}',
'**/src/**/*.{ts,tsx}',
'!**/src/**/__tests__/**',
'!**/src/**/?(*.)(spec|test).*',
'!**/src/setupProxy.*',
'!**/src/setupTests.*',
],
silent: true,
formatter: isEnvProduction ? typescriptFormatter : undefined,
}),
].filter(Boolean),
node: {
module: 'empty',
dgram: 'empty',
dns: 'mock',
fs: 'empty',
http2: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty',
},
performance: false,
};
};
server.js:
// import thunk from 'redux-thunk';
import { createReactAppExpress } from '#cra-express/core';
import { getInitialData } from '#cra-express/router-prefetcher';
import { HelmetProvider } from 'react-helmet-async';
// import Cookies from 'cookies';
import { getStoredState, persistCombineReducers } from 'redux-persist';
// import { CookieStorage, NodeCookiesWrapper } from 'redux-persist-cookie-storage';
import autoMergeLevel1 from 'redux-persist/lib/stateReconciler/autoMergeLevel1';
import storage from "redux-persist/lib/storage";
// import StyleContext from 'isomorphic-style-loader/StyleContext'
import routes from '../src/routes';
import {store} from '../src/index'
import {ChunkExtractor,ChunkExtractorManager} from '#loadable/server'
const path = require('path');
const React = require('react');
const { Provider } = require('react-redux');
const { StaticRouter } = require('react-router-dom');
const { createStore, applyMiddleware ,compose} = require('redux');
const { default: App } = require('../src/App');
const { default: reducer } = require('../src/redux/reducers');
const clientBuildPath = path.resolve(__dirname, '../client');
const statsFile=path.resolve(__dirname,'../dist/loadable-stats.json')
let tag = '';
//let store;
let AppClass = App;
let serverData;
let helmetCtx;
// console.log("REDUCERS",reducer)
const app = createReactAppExpress({
clientBuildPath,
universalRender: handleUniversalRender,
onFinish(req, res, html) {
const { helmet } = helmetCtx;
const helmetTitle = helmet.title.toString();
const helmetMeta = helmet.meta.toString();
const newHtml = html
.replace('{{HELMET_TITLE}}', helmetTitle)
.replace('{{HELMET_META}}', helmetMeta);
res.send(newHtml);
},
onEndReplace(html) {
const state = store.getState();
//console.log("----SERVER getState----", store.getState());
return html.replace(
'{{SCRIPT}}',
`${tag}<script>
window.__PRELOADED_STATE__ = ${JSON.stringify(state).replace(
/</g,
'\\u003c'
)};
window.__INITIAL_DATA__ = ${JSON.stringify(serverData).replace(
/</g,
'\\u003c'
)};
</script>`
);
}
});
function handleUniversalRender(req, res) {
const context = {};
helmetCtx = {};
// const cookieJar = new NodeCookiesWrapper(new Cookies(req, res));
const persistConfig = {
key: 'root',
storage: storage,
// storage: new CookieStorage(cookieJar),
stateReconciler: autoMergeLevel1,
};
let preloadedState;
getStoredState(persistConfig)
.then(preloadedState => {
//console.log("SERVER Preloded State", preloadedState);
})
try {
preloadedState = {
test: 'presisited Data'
};
} catch (e) {
preloadedState = {};
}
const rootReducer = persistCombineReducers(persistConfig, reducer);
/* store = createStore(
rootReducer,
preloadedState,
applyMiddleware(thunk)
);*/
return getInitialData(req, res,routes)
.then(data => {
const css = new Set();
const insertCss = (...styles) => styles.forEach(style => css.add(style._getCss()));
const extractor=new ChunkExtractor({statsFile})
const scriptTags = extractor.getScriptTags()
serverData = data;
// console.log("CSS FILES", scriptTags);
const app = (
<HelmetProvider context={helmetCtx}>
<StaticRouter location={req.url} context={context}>
<Provider store={store}>
{/* <StyleContext.Provider value={{ insertCss }}> */}
<ChunkExtractorManager extractor={extractor}>
<AppClass routes={routes} initialData={data} store={store}/>
</ChunkExtractorManager>
{/* </StyleContext.Provider> */}
</Provider>
</StaticRouter>
</HelmetProvider>
);
return app;
})
.catch(err => {
console.error(err);
res.send(500);
});
}
if (module.hot) {
module.hot.accept('../src/App', () => {
const { default: App } = require('../src/App');
AppClass = App;
console.log('✅ Server hot reloaded App');
});
module.hot.accept('../src/routes', () => {
console.log('✅ Server hot reloaded routes');
});
}
export default app;
css modules works fine with client side and worked fine without code splitting in server side but not working with loadable components. i am using cra-universal library for server side rendering.
can someone please help me with this issue and it will be greatly appreciated.