Ok, So basically We use webpack to bundle our resources before deployment. However, now we want to also bundle our sass files through webpack is it simplifies our build process.it was going well, but now bundle.js is too big to deploy on production so I wanted to split bundle.js and styling files. I don’t much know about plugins and all ,so I searched a little bit and found that mini-css-extract-plugin lets me split style files into a new file. So I went and tweaked the web-pack.config file according to the docs of mini-css-extract-plugin but I am getting so many errors. Can somebody guide me to split styles file and extract it from bundle.js?
error :
ERROR in ./node_modules/normalize.css/normalize.css Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js): ReferenceError: document is not defined at insertStyleElement (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:309:15) at addStyle (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:424:13) at modulesToDom (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:297:18) at module.exports.module.exports (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:455:25) at Object.<anonymous> (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:206:14) at __webpack_require__ (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:21:30) at D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:85:18 at Object.<anonymous> (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesnormalize.cssnormalize.css:88:10) at Module._compile (D:ReactJs-ProjectsExpensify-appnode_modulesv8-compile-cachev8-compile-cache.js:194:30) at evalModuleCode (D:ReactJs-ProjectsExpensify-appnode_modulesmini-css-extract-plugindistloader.js:61:10) at D:ReactJs-ProjectsExpensify-appnode_modulesmini-css-extract-plugindistloader.js:166:21 at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:343:11 at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:681:15 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:15:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:678:31 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1423:35 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1414:32 at eval (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:11:1) at D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistindex.js:321:9 at TaskRunner.run (D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistTaskRunner.js:48:7) at TerserPlugin.optimizeFn (D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistindex.js:227:18) at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:7:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1409:36 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1405:32 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at Compilation.seal (D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1342:27) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:675:18 @ ./src/app.js 10:0-37 ERROR in ./node_modules/react-dates/lib/css/_datepicker.css Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js): ReferenceError: document is not defined at insertStyleElement (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:309:15) at addStyle (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:424:13) at modulesToDom (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:297:18) at module.exports.module.exports (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:455:25) at Object.<anonymous> (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:206:14) at __webpack_require__ (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:21:30) at D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:85:18 at Object.<anonymous> (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appnode_modulesreact-dateslibcss_datepicker.css:88:10) at Module._compile (D:ReactJs-ProjectsExpensify-appnode_modulesv8-compile-cachev8-compile-cache.js:194:30) at evalModuleCode (D:ReactJs-ProjectsExpensify-appnode_modulesmini-css-extract-plugindistloader.js:61:10) at D:ReactJs-ProjectsExpensify-appnode_modulesmini-css-extract-plugindistloader.js:166:21 at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:343:11 at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:681:15 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:15:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:678:31 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1423:35 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1414:32 at eval (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:11:1) at D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistindex.js:321:9 at TaskRunner.run (D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistTaskRunner.js:48:7) at TerserPlugin.optimizeFn (D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistindex.js:227:18) at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:7:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1409:36 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1405:32 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at Compilation.seal (D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1342:27) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:675:18 @ ./src/components/ExpenseForm.js 27:0-45 @ ./src/components/AddExpensePage.js @ ./src/routers/AppRouter.js @ ./src/app.js ERROR in ./src/styles/styles.scss Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js): ReferenceError: document is not defined at insertStyleElement (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:309:15) at addStyle (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:424:13) at modulesToDom (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:297:18) at module.exports.module.exports (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:455:25) at Object.<anonymous> (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:206:14) at __webpack_require__ (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:21:30) at D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:85:18 at Object.<anonymous> (D:ReactJs-ProjectsExpensify-appnode_modulesstyle-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulescss-loaderdistcjs.js!D:ReactJs-ProjectsExpensify-appnode_modulessass-loaderlibloader.js!D:ReactJs-ProjectsExpensify-appsrcstylesstyles.scss:88:10) at Module._compile (D:ReactJs-ProjectsExpensify-appnode_modulesv8-compile-cachev8-compile-cache.js:194:30) at evalModuleCode (D:ReactJs-ProjectsExpensify-appnode_modulesmini-css-extract-plugindistloader.js:61:10) at D:ReactJs-ProjectsExpensify-appnode_modulesmini-css-extract-plugindistloader.js:166:21 at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:343:11 at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:681:15 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:15:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:678:31 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1423:35 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1414:32 at eval (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:11:1) at D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistindex.js:321:9 at TaskRunner.run (D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistTaskRunner.js:48:7) at TerserPlugin.optimizeFn (D:ReactJs-ProjectsExpensify-appnode_modulesterser-webpack-plugindistindex.js:227:18) at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:7:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1409:36 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1405:32 at AsyncSeriesHook.eval [as callAsync] (eval at create (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHookCodeFactory.js:33:10), <anonymous>:6:1) at AsyncSeriesHook.lazyCompileHook (D:ReactJs-ProjectsExpensify-appnode_modulestapablelibHook.js:154:20) at Compilation.seal (D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompilation.js:1342:27) at D:ReactJs-ProjectsExpensify-appnode_moduleswebpacklibCompiler.js:675:18 @ ./src/app.js 11:0-30
webpack.config.js :
const path = require("path"); //const ExtractTextPlugin = require("extract-text-webpack-plugin"); const MiniCssExtractPlugin = require("mini-css-extract-plugin"); module.exports = env => { const isProduction = env === "production"; //const CSSExtract = new ExtractTextPlugin("styles.css"); console.log("env", env); return { entry: "./src/app.js", output: { path: path.join(__dirname, "public"), filename: "bundle.js", }, module: { rules: [ { loader: "babel-loader", test: /.js$/, exclude: /node_modules/, }, { test: /.s?css$/, use: [ { loader: MiniCssExtractPlugin.loader, options: { publicPath: path.join(__dirname, "public"), }, }, "style-loader", "css-loader", "sass-loader", ], }, ], }, plugins: [ new MiniCssExtractPlugin({ filename: "styles.css", }), ], // plugins: [CSSExtract], devtool: isProduction ? "source-map" : "cheap-module-eval-source-map", devServer: { contentBase: path.join(__dirname, "public"), historyApiFallback: true, }, }; };
package.json :
{ "name": "expensify-app", "version": "1.0.0", "main": "index.js", "author": "Viral Thaker", "license": "MIT", "scripts": { "serve": "live-server public/", "build:dev": "webpack", "build:prod": "webpack -p --env production", "dev-server": "webpack-dev-server", "start": "npm run dev-server", "test": "jest" }, "dependencies": { "babel-cli": "^6.26.0", "babel-core": "^6.26.3", "babel-loader": "^8.1.0", "babel-plugin-transform-class-properties": "^6.24.1", "babel-plugin-transform-object-rest-spread": "^6.26.0", "css-loader": "^4.0.0", "jest": "^26.4.1", "live-server": "^1.2.1", "moment": "^2.27.0", "node-sass": "^4.14.1", "normalize.css": "^8.0.1", "react": "^16.13.1", "react-addons-shallow-compare": "^15.6.2", "react-dates": "^21.8.0", "react-dom": "^16.13.1", "react-modal": "^3.11.2", "react-redux": "^7.2.1", "react-router-dom": "^5.2.0", "redux": "^4.0.5", "sass-loader": "^6.0.6", "style-loader": "^1.2.1", "uuid": "^8.3.0", "validator": "^13.1.1" }, "devDependencies": { "@babel/core": "^7.10.5", "@babel/preset-env": "^7.10.4", "@babel/preset-react": "^7.10.4", "extract-text-webpack-plugin": "^4.0.0-beta.0", "mini-css-extract-plugin": "^0.10.0", "webpack": "^4.44.1", "webpack-cli": "^3.3.12", "webpack-dev-server": "^3.11.0" } }
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Answer
As Camilo suggested there was this "style-loader"
which was somehow conflicting to the plugin but anyway as I am separating CSS files I don’t need inline CSS so I completely removed it from the loader and the error was completely gone and it gave me a new build with separate CSS file
Anyone, having the same problem in future just look for your loader whether its conflicting