Update xterm libary to 4.17

js/webpack.config.js

@@ -1,29 +1,30 @@
-const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
+const TerserPlugin = require("terser-webpack-plugin");
 
 module.exports = {
-    entry: "./src/main.ts",
-    output: {
-        filename: "./dist/gotty-bundle.js"
-    },
-    devtool: "source-map",
-    resolve: {
-        extensions: [".ts", ".tsx", ".js"],
-    },
-    module: {
-        rules: [
-            {
-                test: /\.tsx?$/,
-                loader: "ts-loader",
-                exclude: /node_modules/
-            },
-            {
-                test: /\.js$/,
-                include: /node_modules/,
-                loader: 'license-loader'
-            }
-        ]
-    },
-    plugins: [
-        new UglifyJSPlugin()
+  entry: "./src/main.ts",
+  output: {
+    filename: "./gotty-bundle.js"
+  },
+  devtool: "source-map",
+  resolve: {
+    extensions: [".ts", ".tsx", ".js"],
+  },
+  module: {
+    rules: [
+      {
+        test: /\.tsx?$/,
+        loader: "ts-loader",
+        exclude: /node_modules/
+      },
+      {
+        test: /\.js$/,
+        include: /node_modules/,
+        loader: 'license-loader'
+      }
     ]
+  },
+  optimization: {
+    minimize: true,
+    minimizer: [new TerserPlugin()],
+  }
 };