diff --git a/package-lock.json b/package-lock.json
index d0e0c572..94ad827c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,9 +18,9 @@
       "integrity": "sha512-8GqG48m1XqyXh4mIZrtB5xOhUwSsh1WsrrsaZQOEYYql3YN9DEu9OOSg0ILzXHZo/h2Q74777YE4YzlArQzQEQ=="
     },
     "@babel/cli": {
-      "version": "7.6.3",
-      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.6.3.tgz",
-      "integrity": "sha512-kWKOEeuylpa781yCeA5//eEx1u3WtLZqbi2VWXLKmb3QDPb5T2f7Yk311MK7bvvjR70dluAeiu4VXXsG1WwJsw==",
+      "version": "7.6.4",
+      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.6.4.tgz",
+      "integrity": "sha512-tqrDyvPryBM6xjIyKKUwr3s8CzmmYidwgdswd7Uc/Cv0ogZcuS1TYQTLx/eWKP3UbJ6JxZAiYlBZabXm/rtRsQ==",
       "dev": true,
       "requires": {
         "chokidar": "^2.1.8",
@@ -32,7 +32,7 @@
         "mkdirp": "^0.5.1",
         "output-file-sync": "^2.0.0",
         "slash": "^2.0.0",
-        "source-map": "^0.6.1"
+        "source-map": "^0.5.0"
       },
       "dependencies": {
         "commander": {
@@ -40,6 +40,12 @@
           "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.1.tgz",
           "integrity": "sha512-cCuLsMhJeWQ/ZpsFTbE765kvVfoeSddc4nU3up4fV+fDBcfUXnbITJ+JzhkdjzOqhURjZgujxaioam4RM9yGUg==",
           "dev": true
+        },
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "dev": true
         }
       }
     },
@@ -53,15 +59,15 @@
       }
     },
     "@babel/core": {
-      "version": "7.6.3",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.6.3.tgz",
-      "integrity": "sha512-QfQ5jTBgXLzJuo7Mo8bZK/ePywmgNRgk/UQykiKwEtZPiFIn8ZqE6jB+AnD1hbB1S2xQyL4//it5vuAUOVAMTw==",
+      "version": "7.6.4",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.6.4.tgz",
+      "integrity": "sha512-Rm0HGw101GY8FTzpWSyRbki/jzq+/PkNQJ+nSulrdY6gFGOsNseCqD6KHRYe2E+EdzuBdr2pxCp6s4Uk6eJ+XQ==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.5.5",
-        "@babel/generator": "^7.6.3",
+        "@babel/generator": "^7.6.4",
         "@babel/helpers": "^7.6.2",
-        "@babel/parser": "^7.6.3",
+        "@babel/parser": "^7.6.4",
         "@babel/template": "^7.6.0",
         "@babel/traverse": "^7.6.3",
         "@babel/types": "^7.6.3",
@@ -71,7 +77,7 @@
         "lodash": "^4.17.13",
         "resolve": "^1.3.2",
         "semver": "^5.4.1",
-        "source-map": "^0.6.1"
+        "source-map": "^0.5.0"
       },
       "dependencies": {
         "@babel/code-frame": {
@@ -84,21 +90,21 @@
           }
         },
         "@babel/generator": {
-          "version": "7.6.3",
-          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.6.3.tgz",
-          "integrity": "sha512-hLhYbAb3pHwxjlijC4AQ7mqZdcoujiNaW7izCT04CIowHK8psN0IN8QjDv0iyFtycF5FowUOTwDloIheI25aMw==",
+          "version": "7.6.4",
+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.6.4.tgz",
+          "integrity": "sha512-jsBuXkFoZxk0yWLyGI9llT9oiQ2FeTASmRFE32U+aaDTfoE92t78eroO7PTpU/OrYq38hlcDM6vbfLDaOLy+7w==",
           "dev": true,
           "requires": {
             "@babel/types": "^7.6.3",
             "jsesc": "^2.5.1",
             "lodash": "^4.17.13",
-            "source-map": "^0.6.1"
+            "source-map": "^0.5.0"
           }
         },
         "@babel/parser": {
-          "version": "7.6.3",
-          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.6.3.tgz",
-          "integrity": "sha512-sUZdXlva1dt2Vw2RqbMkmfoImubO0D0gaCrNngV6Hi0DA4x3o4mlrq0tbfY0dZEUIccH8I6wQ4qgEtwcpOR6Qg==",
+          "version": "7.6.4",
+          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.6.4.tgz",
+          "integrity": "sha512-D8RHPW5qd0Vbyo3qb+YjO5nvUVRTXFLQ/FsDxJU2Nqz4uB5EnUN0ZQSEYpvTIbRuttig1XbHWU5oMeQwQSAA+A==",
           "dev": true
         },
         "@babel/template": {
@@ -154,6 +160,12 @@
           "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
           "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
           "dev": true
+        },
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "dev": true
         }
       }
     },
@@ -487,21 +499,21 @@
       },
       "dependencies": {
         "@babel/generator": {
-          "version": "7.6.3",
-          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.6.3.tgz",
-          "integrity": "sha512-hLhYbAb3pHwxjlijC4AQ7mqZdcoujiNaW7izCT04CIowHK8psN0IN8QjDv0iyFtycF5FowUOTwDloIheI25aMw==",
+          "version": "7.6.4",
+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.6.4.tgz",
+          "integrity": "sha512-jsBuXkFoZxk0yWLyGI9llT9oiQ2FeTASmRFE32U+aaDTfoE92t78eroO7PTpU/OrYq38hlcDM6vbfLDaOLy+7w==",
           "dev": true,
           "requires": {
             "@babel/types": "^7.6.3",
             "jsesc": "^2.5.1",
             "lodash": "^4.17.13",
-            "source-map": "^0.6.1"
+            "source-map": "^0.5.0"
           }
         },
         "@babel/parser": {
-          "version": "7.6.3",
-          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.6.3.tgz",
-          "integrity": "sha512-sUZdXlva1dt2Vw2RqbMkmfoImubO0D0gaCrNngV6Hi0DA4x3o4mlrq0tbfY0dZEUIccH8I6wQ4qgEtwcpOR6Qg==",
+          "version": "7.6.4",
+          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.6.4.tgz",
+          "integrity": "sha512-D8RHPW5qd0Vbyo3qb+YjO5nvUVRTXFLQ/FsDxJU2Nqz4uB5EnUN0ZQSEYpvTIbRuttig1XbHWU5oMeQwQSAA+A==",
           "dev": true
         },
         "@babel/template": {
@@ -562,6 +574,12 @@
           "requires": {
             "ms": "^2.1.1"
           }
+        },
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "dev": true
         }
       }
     },
diff --git a/package.json b/package.json
index f868acb3..696f2372 100644
--- a/package.json
+++ b/package.json
@@ -56,8 +56,8 @@
     "ws": "7.1.2"
   },
   "devDependencies": {
-    "@babel/cli": "7.6.3",
-    "@babel/core": "7.6.3",
+    "@babel/cli": "7.6.4",
+    "@babel/core": "7.6.4",
     "@babel/plugin-proposal-object-rest-spread": "7.6.2",
     "@babel/plugin-transform-flow-strip-types": "7.6.3",
     "@babel/preset-env": "7.6.3",