diff --git a/package-lock.json b/package-lock.json
index a71d937..71930ac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
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@@ -13040,13 +11671,6 @@
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@@ -13151,13 +11775,6 @@
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@@ -13266,12 +11883,6 @@
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@@ -13565,13 +12176,21 @@
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+      "resolved": "https://registry.npmjs.org/useragent/-/useragent-2.2.1.tgz",
+      "integrity": "sha1-z1k+9PLRdYdei7ZY6pLhik/QbY4=",
       "dev": true,
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+        "lru-cache": "2.2.4",
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+      },
+      "dependencies": {
+        "lru-cache": {
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+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.2.4.tgz",
+          "integrity": "sha1-bGWGGb7PFAMdDQtZSxYELOTcBj0=",
+          "dev": true
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@@ -13625,13 +12244,6 @@
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-      "resolved": "https://registry.npmjs.org/uws/-/uws-9.14.0.tgz",
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@@ -14581,13 +13193,6 @@
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-      "integrity": "sha1-xxMLan6gRpPoQs3J56Hyqjmjn4I=",
-      "dev": true,
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@@ -14725,13 +13330,6 @@
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-      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-2.0.0.tgz",
-      "integrity": "sha1-UqY+VsoLhKfzpfPWGHLxJq16WUM=",
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diff --git a/package.json b/package.json
index d6cf242..0cdc189 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
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     "jasmine-core": "^3.1.0",
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+    "karma": "^3.0.0",
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     "karma-coverage": "^1.1.1",
     "karma-jasmine": "^1.1.1",