diff --git a/package-lock.json b/package-lock.json
index c55e4b3..5d01e80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -459,6 +459,12 @@
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@@ -2741,12 +2746,6 @@
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+            "find-up": "^3.0.0",
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             "string-width": "^2.0.0",
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-            "yargs-parser": "^9.0.2"
+            "y18n": "^3.2.1 || ^4.0.0",
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@@ -12757,12 +12952,13 @@
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-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
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       "dev": true,
       "requires": {
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+        "http-parser-js": ">=0.5.1",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
@@ -12894,6 +13090,12 @@
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     },
+    "xregexp": {
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diff --git a/package.json b/package.json
index 5ffb89a..c8703b2 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
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     "webpack": "^4.6.0",
     "webpack-cli": "^2.0.14",
-    "webpack-dev-server": "^3.1.3",
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     "webpack-node-externals": "^1.7.2"
   }