Used webpack-merge for webpack configs

package.json

@@ -40,7 +40,8 @@
     "react-dom": "^15.5.4",
     "react-fontawesome": "^1.6.1",
     "semantic-ui-css": "^2.2.10",
-    "semantic-ui-react": "^0.68.5"
+    "semantic-ui-react": "^0.68.5",
+    "webpack-merge": "^4.1.0"
   },
   "devDependencies": {
     "@types/webpack-env": "^1.13.0",

webpack/base.config.js

@@ -0,0 +1,33 @@
+const path = require("path");
+const webpack = require("webpack");
+const HtmlWebpackPlugin = require("html-webpack-plugin");
+
+module.exports = {
+    devtool: "inline-source-map",
+    output: {
+        path: path.resolve(__dirname, "..", "build"),
+        filename: "bundle.js"
+    },
+    resolve: {
+        extensions: [".ts", ".tsx", ".js"],
+        alias: {
+            app: path.resolve(__dirname, "..", "app")
+        }
+    },
+    module: {
+        rules: [
+            { test: /\.css$/, loader: "style-loader!css-loader" },
+            { test: /\.(ttf|eot|svg|woff(2)?|png|jpg)(\?[a-z0-9=&.]+)?$/, loader: "file-loader" }
+        ]
+    },
+    plugins: [
+        new HtmlWebpackPlugin({
+            template: "./app/index.html"
+        }),
+        new webpack.NamedModulesPlugin(),
+        new webpack.HotModuleReplacementPlugin()
+    ],
+    devServer: {
+        hot: true
+    }
+};

webpack/dev.config.js

@@ -1,8 +1,8 @@
-const path = require("path");
 const webpack = require("webpack");
-const HtmlWebpackPlugin = require("html-webpack-plugin");
+const webpackMerge = require("webpack-merge");
+const base = require("./base.config");
 
-module.exports = {
+module.exports = webpackMerge.smart(base, {
     entry: [
         "react-hot-loader/patch",
         "webpack-dev-server/client?http://localhost:8080",
@@ -10,31 +10,16 @@ module.exports = {
         "./app/script/index.tsx"
     ],
     devtool: "inline-source-map",
-    output: {
-        path: path.resolve(__dirname, "../build"),
-        filename: "bundle.js"
-    },
-    resolve: {
-        extensions: [".ts", ".tsx", ".js"],
-        alias: {
-            app: path.resolve("./app")
-        }
-    },
     module: {
         rules: [
             { test: /\.tsx?$/, loaders: ["react-hot-loader/webpack", "awesome-typescript-loader"] },
-            { test: /\.css$/, loader: "style-loader!css-loader" },
-            { test: /\.(ttf|eot|svg|woff(2)?|png|jpg)(\?[a-z0-9=&.]+)?$/, loader: "file-loader" }
         ]
     },
     plugins: [
-        new HtmlWebpackPlugin({
-            template: "./app/index.html"
-        }),
         new webpack.NamedModulesPlugin(),
         new webpack.HotModuleReplacementPlugin()
     ],
     devServer: {
         hot: true
     }
-};
+});

webpack/prod.config.js

@@ -1,32 +1,16 @@
-const path = require("path");
+const webpackMerge = require("webpack-merge");
-const webpack = require("webpack");
+const base = require("./base.config");
-const HtmlWebpackPlugin = require("html-webpack-plugin");
 
-module.exports = {
+module.exports = webpackMerge.smart(base, {
     entry: [
         "./app/script/index.tsx"
     ],
     devtool: "none",
-    output: {
-        path: path.resolve(__dirname, "../dist"),
-        filename: "bundle.js"
-    },
-    resolve: {
-        extensions: [".ts", ".tsx", ".js"],
-        alias: {
-            app: path.resolve("./app")
-        }
-    },
     module: {
         rules: [
             { test: /\.tsx?$/, loader: "awesome-typescript-loader" },
-            { test: /\.css$/, loader: "style-loader!css-loader" },
-            { test: /\.(ttf|eot|svg|woff(2)?|png|jpg)(\?[a-z0-9=&.]+)?$/, loader: "file-loader" }
         ]
     },
     plugins: [
-        new HtmlWebpackPlugin({
-            template: "./app/index.html"
-        })
     ]
-};
+});

yarn.lock

@@ -3523,6 +3523,12 @@ webpack-dev-server@^2.4.4:
     webpack-dev-middleware "^1.10.2"
     yargs "^6.0.0"
 
+webpack-merge@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-4.1.0.tgz#6ad72223b3e0b837e531e4597c199f909361511e"
+  dependencies:
+    lodash "^4.17.4"
+
 webpack-sources@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-0.2.3.tgz#17c62bfaf13c707f9d02c479e0dcdde8380697fb"