Update to Babel 7.4.1 (#1797)

Author: IvanGoncharov

package.json

@@ -49,11 +49,11 @@
   },
   "devDependencies": {
     "@babel/cli": "7.2.3",
-    "@babel/core": "7.3.4",
-    "@babel/plugin-transform-flow-strip-types": "7.3.4",
-    "@babel/polyfill": "7.2.5",
-    "@babel/preset-env": "7.3.4",
-    "@babel/register": "7.0.0",
+    "@babel/core": "7.4.0",
+    "@babel/plugin-transform-flow-strip-types": "7.4.0",
+    "@babel/polyfill": "7.4.0",
+    "@babel/preset-env": "7.4.1",
+    "@babel/register": "7.4.0",
     "babel-eslint": "10.0.1",
     "benchmark": "2.1.4",
     "chai": "4.2.0",