diff --git a/package-lock.json b/package-lock.json
index c809363..0daeece 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2183,6 +2183,16 @@
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-        "chownr": "^1.1.1",
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@@ -3059,6 +3072,12 @@
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@@ -3068,6 +3087,24 @@
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+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
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@@ -3212,6 +3249,12 @@
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@@ -4766,6 +4809,15 @@
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+      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-24.9.0.tgz",
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@@ -6783,6 +6862,12 @@
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@@ -6868,6 +6953,50 @@
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@@ -8829,20 +8959,100 @@
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@@ -9294,6 +9527,61 @@
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+          "version": "5.1.1",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz",
+          "integrity": "sha512-KpNARQA3Iwv+jTA0utUVVbrh+Jlrr1Fv0e56GGzAFOXN7dk/FviaDW8LHmK52DlcH4WP2n6gI8vN1aesBFgo9w==",
+          "dev": true,
+          "requires": {
+            "yallist": "^3.0.2"
+          }
+        },
+        "ssri": {
+          "version": "6.0.1",
+          "resolved": "https://registry.npmjs.org/ssri/-/ssri-6.0.1.tgz",
+          "integrity": "sha512-3Wge10hNcT1Kur4PDFwEieXSCMCJs/7WvSACcrMYrNp+b8kDL1/0wJch5Ni2WrtwEa2IO8OsVfeKIciKCDx/QA==",
+          "dev": true,
+          "requires": {
+            "figgy-pudding": "^3.5.1"
+          }
+        },
+        "terser-webpack-plugin": {
+          "version": "1.4.3",
+          "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-1.4.3.tgz",
+          "integrity": "sha512-QMxecFz/gHQwteWwSo5nTc6UaICqN1bMedC5sMtUc7y3Ha3Q8y6ZO0iCR8pq4RJC8Hjf0FEPEHZqcMB/+DFCrA==",
+          "dev": true,
+          "requires": {
+            "cacache": "^12.0.2",
+            "find-cache-dir": "^2.1.0",
+            "is-wsl": "^1.1.0",
+            "schema-utils": "^1.0.0",
+            "serialize-javascript": "^2.1.2",
+            "source-map": "^0.6.1",
+            "terser": "^4.1.2",
+            "webpack-sources": "^1.4.0",
+            "worker-farm": "^1.7.0"
+          }
+        },
+        "yallist": {
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+          "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==",
+          "dev": true
         }
       }
     },
diff --git a/package.json b/package.json
index 9f9a022..09453cf 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,8 @@
   "scripts": {
     "test": "karma start karma.conf.js",
     "start": "webpack-dev-server --open --config webpack.dev.js",
-    "build": "webpack --config webpack.prod.js"
+    "build": "webpack --config webpack.prod.js",
+    "build:dev": "webpack --config webpack.dev.js"
   },
   "repository": {
     "type": "git",
@@ -38,7 +39,8 @@
     "karma-webpack": "^4.0.2",
     "puppeteer": "^2.0.0",
     "regenerator-runtime": "^0.13.3",
-    "webpack": "^4.41.4",
+    "terser-webpack-plugin": "^2.3.1",
+    "webpack": "^4.41.5",
     "webpack-cli": "^3.3.10",
     "webpack-merge": "^4.2.2"
   },