diff --git a/store-reactjs-chat/config/webpack.extend.js b/store-reactjs-chat/config/webpack.extend.js
deleted file mode 100644
index 2f1fc95..0000000
--- a/store-reactjs-chat/config/webpack.extend.js
+++ /dev/null
@@ -1,60 +0,0 @@
-const webpack = require('webpack');
-
-module.exports = {
-  dev: (config) => {
-    // Override webpack 5 config from react-scripts to load polyfills
-    if (!config.resolve) config.resolve = {};
-    if (!config.resolve.fallback) config.resolve.fallback = {};
-    Object.assign(config.resolve.fallback, {
-      buffer: require.resolve('buffer'),
-      crypto: false,
-      stream: require.resolve('stream-browserify'),
-    });
-
-    if (!config.plugins) config.plugins = [];
-    config.plugins.push(
-      new webpack.DefinePlugin({
-        'process.env.ENV': JSON.stringify('dev'),
-      })
-    );
-    config.plugins.push(
-      new webpack.ProvidePlugin({
-        process: 'process/browser.js',
-        Buffer: ['buffer', 'Buffer'],
-      })
-    );
-
-    if (!config.ignoreWarnings) config.ignoreWarnings = [];
-    config.ignoreWarnings.push(/Failed to parse source map/);
-
-    return config;
-  },
-  prod: (config) => {
-    // Override webpack 5 config from react-scripts to load polyfills
-    if (!config.resolve) config.resolve = {};
-    if (!config.resolve.fallback) config.resolve.fallback = {};
-    Object.assign(config.resolve.fallback, {
-      buffer: require.resolve('buffer'),
-      crypto: false,
-      stream: require.resolve('stream-browserify'),
-    });
-
-    if (!config.plugins) config.plugins = [];
-    config.plugins.push(
-      new webpack.DefinePlugin({
-        'process.env.ENV': JSON.stringify('prod'),
-      })
-    );
-    config.plugins.push(
-      new webpack.ProvidePlugin({
-        process: 'process/browser.js',
-        Buffer: ['buffer', 'Buffer'],
-      })
-    );
-
-    if (!config.ignoreWarnings) config.ignoreWarnings = [];
-    config.ignoreWarnings.push(/Failed to parse source map/);
-
-    return config;
-  },
-};