Fix vulnerability issues reported by 'yarn audit'. Replace the deprecated uglifyjs-webpack-plugin with a terser-webpack-plugin. Fixes #5004.

docs/en_US/release_notes.rst

@@ -11,6 +11,7 @@ notes for it.
 .. toctree::
    :maxdepth: 1
 
+   release_notes_4_17
    release_notes_4_16
    release_notes_4_15
    release_notes_4_14

docs/en_US/release_notes_4_17.rst

@@ -0,0 +1,20 @@
+************
+Version 4.17
+************
+
+Release date: 2020-01-09
+
+This release contains a number of bug fixes and new features since the release of pgAdmin4 4.16.
+
+New features
+************
+
+
+Housekeeping
+************
+
+
+Bug fixes
+*********
+
+| `Issue #5004 <https://redmine.postgresql.org/issues/5004>`_ -  Fix vulnerability issues reported by 'yarn audit'. Replace the deprecated uglifyjs-webpack-plugin with a terser-webpack-plugin.

web/package.json

@@ -13,7 +13,7 @@
     "axios-mock-adapter": "^1.17.0",
     "babel-loader": "~8.0.5",
     "babel-plugin-transform-object-rest-spread": "^7.0.0-beta.3",
-    "copy-webpack-plugin": "^5.0.4",
+    "copy-webpack-plugin": "^5.1.0",
     "core-js": "^3.2.1",
     "cross-env": "^5.2.0",
     "eslint": "5.15.1",
@@ -41,9 +41,9 @@
     "sass-loader": "^7.1.0",
     "sass-resources-loader": "^2.0.0",
     "style-loader": "^0.23.1",
-    "uglifyjs-webpack-plugin": "^2.1.2",
+    "terser-webpack-plugin": "^2.2.2",
     "url-loader": "^1.1.2",
-    "webpack": "^4.29.6",
+    "webpack": "^4.41.2",
     "webpack-bundle-analyzer": "^3.5.1",
     "webpack-cli": "^3.2.3",
     "webpack-require-from": "^1.8.0",

web/webpack.config.js

@@ -18,7 +18,7 @@ const sourceDir = __dirname + '/pgadmin/static';
 const webpackShimConfig = require('./webpack.shim');
 const PRODUCTION = process.env.NODE_ENV === 'production';
 const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');
-const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
+const TerserPlugin = require('terser-webpack-plugin');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 const extractStyle = new MiniCssExtractPlugin({
   filename: '[name].css',
@@ -518,13 +518,12 @@ module.exports = [{
     poll: 1000,
     ignored: /node_modules/,
   },
-  // Webpack 4: uglifyPlugin moved from plugins to optimization
   optimization: {
     minimizer: [
-      new UglifyJsPlugin({
+      new TerserPlugin({
         parallel: true,
         cache: true,
-        uglifyOptions: {
+        terserOptions: {
           compress: true,
           extractComments: true,
           output: {