diff --git a/package-lock.json b/package-lock.json
index 79785aa..5d5ca64 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -96,6 +96,129 @@
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+        "@babel/helper-plugin-utils": "^7.0.0",
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+        "@babel/helper-split-export-declaration": "^7.4.4"
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+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.5.5.tgz",
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+            "jsesc": "^2.5.1",
+            "lodash": "^4.17.13",
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+            "@babel/helper-optimise-call-expression": "^7.0.0",
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+            "@babel/generator": "^7.5.5",
+            "@babel/helper-function-name": "^7.1.0",
+            "@babel/helper-split-export-declaration": "^7.4.4",
+            "@babel/parser": "^7.5.5",
+            "@babel/types": "^7.5.5",
+            "debug": "^4.1.0",
+            "globals": "^11.1.0",
+            "lodash": "^4.17.13"
+          }
+        },
+        "@babel/types": {
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+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.5.5.tgz",
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+          "dev": true,
+          "requires": {
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.13",
+            "to-fast-properties": "^2.0.0"
+          }
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
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+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "jsesc": {
+          "version": "2.5.2",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz",
+          "integrity": "sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA==",
+          "dev": true
+        },
+        "lodash": {
+          "version": "4.17.14",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.14.tgz",
+          "integrity": "sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==",
+          "dev": true
+        }
+      }
+    },
     "@babel/helper-define-map": {
       "version": "7.1.0",
       "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.1.0.tgz",
@@ -335,17 +458,13 @@
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     "@babel/plugin-proposal-class-properties": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.1.0.tgz",
-      "integrity": "sha512-/PCJWN+CKt5v1xcGn4vnuu13QDoV+P7NcICP44BoonAJoPSGwVkgrXihFIQGiEjjPlUDBIw1cM7wYFLARS2/hw==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.5.5.tgz",
+      "integrity": "sha512-AF79FsnWFxjlaosgdi421vmYG6/jg79bVD0dpD44QdgobzHKuLZ6S3vl8la9qIeSwGi8i1fS0O1mfuDAAdo1/A==",
       "dev": true,
       "requires": {
-        "@babel/helper-function-name": "^7.1.0",
-        "@babel/helper-member-expression-to-functions": "^7.0.0",
-        "@babel/helper-optimise-call-expression": "^7.0.0",
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/helper-replace-supers": "^7.1.0",
-        "@babel/plugin-syntax-class-properties": "^7.0.0"
+        "@babel/helper-create-class-features-plugin": "^7.5.5",
+        "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
     "@babel/plugin-proposal-export-default-from": {
@@ -439,15 +558,6 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
-    "@babel/plugin-syntax-class-properties": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-class-properties/-/plugin-syntax-class-properties-7.0.0.tgz",
-      "integrity": "sha512-cR12g0Qzn4sgkjrbrzWy2GE7m9vMl/sFkqZ3gIpAQdrvPDnLM8180i+ANDFIXfjHo9aqp0ccJlQ0QNZcFUbf9w==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
     "@babel/plugin-syntax-dynamic-import": {
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       "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-dynamic-import/-/plugin-syntax-dynamic-import-7.0.0.tgz",
@@ -1122,6 +1232,12 @@
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       "dev": true
     },
+    "globals": {
+      "version": "11.12.0",
+      "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
+      "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==",
+      "dev": true
+    },
     "has-flag": {
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       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
@@ -1245,6 +1361,12 @@
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
       "dev": true
     },
+    "to-fast-properties": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
+      "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
+      "dev": true
+    },
     "trim-right": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz",
diff --git a/package.json b/package.json
index e913d5f..3ef8fe4 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "dependencies": {},
   "devDependencies": {
     "@babel/core": "^7.1.2",
-    "@babel/plugin-proposal-class-properties": "^7.1.0",
+    "@babel/plugin-proposal-class-properties": "^7.5.5",
     "@babel/plugin-proposal-export-default-from": "^7.0.0",
     "@babel/plugin-syntax-dynamic-import": "^7.0.0",
     "@babel/plugin-transform-react-constant-elements": "^7.0.0",