diff --git a/packages/core/package-lock.json b/packages/core/package-lock.json
index a0af352ddb..1e7a9e3332 100644
--- a/packages/core/package-lock.json
+++ b/packages/core/package-lock.json
@@ -1,6 +1,6 @@
 {
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@@ -4008,6 +4011,12 @@
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-      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=",
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@@ -13415,7 +13617,7 @@
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-      "optional": true
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@@ -13535,6 +13736,12 @@
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+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
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@@ -13666,9 +13873,9 @@
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+      "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.2.tgz",
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+      "dev": true,
+      "requires": {
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+    },
+    "w3c-xmlserializer": {
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+      "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-2.0.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -13766,9 +13991,9 @@
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-      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=",
+      "version": "6.1.0",
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@@ -14297,20 +14522,47 @@
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+      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz",
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+      "dev": true,
+      "requires": {
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+        "iconv-lite": {
+          "version": "0.4.24",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+          "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+          "dev": true,
+          "requires": {
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       "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz",
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+    "whatwg-mimetype": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz",
+      "integrity": "sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==",
+      "dev": true
+    },
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-      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-2.0.1.tgz",
-      "integrity": "sha1-U5ayBD8CDub3BNnEXqhRnnJN5lk=",
+      "version": "8.7.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-8.7.0.tgz",
+      "integrity": "sha512-gAojqb/m9Q8a5IV96E3fHJM70AzCkgt4uXYX2O7EmuyOnLrViCQlsEBmF9UQIu3/aeAIp2U17rtbpZWNntQqdg==",
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-        "tr46": "~0.0.3",
-        "webidl-conversions": "^3.0.0"
+        "lodash": "^4.7.0",
+        "tr46": "^2.1.0",
+        "webidl-conversions": "^6.1.0"
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     "whet.extend": {
@@ -14402,10 +14654,22 @@
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+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.8.tgz",
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-      "integrity": "sha1-TYuPHszTQZqjYgYb7O9RXh5VljU=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
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+    "xmlchars": {
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+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
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diff --git a/packages/core/package.json b/packages/core/package.json
index 9c8cc5e3bc..c637e4e289 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -87,7 +87,7 @@
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     "html": "^1.0.0",
     "husky": "^0.13.2",
-    "jsdom": "^8.3.0",
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     "json-loader": "^0.5.7",
     "lint-staged": "^10.1.3",
     "loader-utils": "^1.2.3",