Remove deprecated uglifyjs-webpack-plugin

package.json

@@ -137,7 +137,6 @@
     "ts-jest": "^27.0.3",
     "twemoji": "https://github.com/twitter/twemoji#v13.0.2",
     "typescript": "^4.0.3",
-    "uglifyjs-webpack-plugin": "^2.2.0",
     "unused-files-webpack-plugin": "^3.4.0",
     "uuid": "^8.0.0",
     "webpack": "^4.41.2",

webpack/production.js

@@ -4,7 +4,7 @@ console.log('Running in production mode'); // eslint-disable-line no-console
 const { merge } = require('webpack-merge');
 const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 const OfflinePlugin = require('offline-plugin');
-const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
+const TerserPlugin = require('terser-webpack-plugin');
 const CompressionPlugin = require('compression-webpack-plugin');
 const { output } = require('./configuration');
 const sharedConfig = require('./shared');
@@ -17,12 +17,12 @@ module.exports = merge(sharedConfig, {
   optimization: {
     minimize: true,
     minimizer: [
-      new UglifyJsPlugin({
+      new TerserPlugin({
         cache: true,
         parallel: true,
         sourceMap: true,
 
-        uglifyOptions: {
+        terserOptions: {
           warnings: false,
 
           output: {

yarn.lock

@@ -12379,26 +12379,6 @@ ua-parser-js@^0.7.18:
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.19.tgz#94151be4c0a7fb1d001af7022fdaca4642659e4b"
   integrity sha512-T3PVJ6uz8i0HzPxOF9SWzWAlfN/DavlpQqepn22xgve/5QecC+XMCAtmUNnY7C9StehaV6exjUCI801lOI7QlQ==
 
-uglify-js@^3.6.0:
-  version "3.10.4"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.10.4.tgz#dd680f5687bc0d7a93b14a3482d16db6eba2bfbb"
-  integrity sha512-kBFT3U4Dcj4/pJ52vfjCSfyLyvG9VYYuGYPmrPvAxRw/i7xHiT4VvCev+uiEMcEEiu6UNB6KgWmGtSUYIWScbw==
-
-uglifyjs-webpack-plugin@^2.2.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/uglifyjs-webpack-plugin/-/uglifyjs-webpack-plugin-2.2.0.tgz#e75bc80e7f1937f725954c9b4c5a1e967ea9d0d7"
-  integrity sha512-mHSkufBmBuJ+KHQhv5H0MXijtsoA1lynJt1lXOaotja8/I0pR4L9oGaPIZw+bQBOFittXZg9OC1sXSGO9D9ZYg==
-  dependencies:
-    cacache "^12.0.2"
-    find-cache-dir "^2.1.0"
-    is-wsl "^1.1.0"
-    schema-utils "^1.0.0"
-    serialize-javascript "^1.7.0"
-    source-map "^0.6.1"
-    uglify-js "^3.6.0"
-    webpack-sources "^1.4.0"
-    worker-farm "^1.7.0"
-
 unherit@^1.0.4:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/unherit/-/unherit-1.1.3.tgz#6c9b503f2b41b262330c80e91c8614abdaa69c22"