diff --git a/.babelrc b/.babelrc
index 0f857779..546068ff 100644
--- a/.babelrc
+++ b/.babelrc
@@ -4,22 +4,9 @@
     "@babel/preset-react"
   ],
   "plugins": [
-    "@babel/plugin-proposal-function-bind",
-    "@babel/plugin-proposal-export-default-from",
-    "@babel/plugin-proposal-logical-assignment-operators",
-    ["@babel/plugin-proposal-optional-chaining", { "loose": false }],
-    ["@babel/plugin-proposal-pipeline-operator", { "proposal": "minimal" }],
-    ["@babel/plugin-proposal-nullish-coalescing-operator", { "loose": false }],
-    "@babel/plugin-proposal-do-expressions",
+    "@babel/plugin-transform-runtime",
     ["@babel/plugin-proposal-decorators", { "legacy": true }],
-    "@babel/plugin-proposal-function-sent",
-    "@babel/plugin-proposal-export-namespace-from",
-    "@babel/plugin-proposal-numeric-separator",
-    "@babel/plugin-proposal-throw-expressions",
-    "@babel/plugin-syntax-dynamic-import",
-    "@babel/plugin-syntax-import-meta",
-    ["@babel/plugin-proposal-class-properties", { "loose": true }],
-    "@babel/plugin-proposal-json-strings",
+    ["@babel/plugin-proposal-class-properties", { "loose" : true }],
     "react-hot-loader/babel"
   ]
 }
diff --git a/package-lock.json b/package-lock.json
index c9301eca..c5e0425b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -610,57 +610,6 @@
         "@babel/plugin-syntax-decorators": "^7.2.0"
       }
     },
-    "@babel/plugin-proposal-do-expressions": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-do-expressions/-/plugin-proposal-do-expressions-7.2.0.tgz",
-      "integrity": "sha512-2bWN48zQHf/W5T8XvemGQJSi8hzhIo7y4kv/RiA08UcMLQ73lkTknhlaFGf1HjCJzG8FGopgsq6pSe1C+10fPg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-do-expressions": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-export-default-from": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-export-default-from/-/plugin-proposal-export-default-from-7.2.0.tgz",
-      "integrity": "sha512-NVfNe7F6nsasG1FnvcFxh2FN0l04ZNe75qTOAVOILWPam0tw9a63RtT/Dab8dPjedZa4fTQaQ83yMMywF9OSug==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-export-default-from": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-export-namespace-from": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-export-namespace-from/-/plugin-proposal-export-namespace-from-7.2.0.tgz",
-      "integrity": "sha512-DZUxbHYxQ5fUFIkMEnh75ogEdBLPfL+mQUqrO2hNY2LGm+tqFnxE924+mhAcCOh/8za8AaZsWHbq6bBoS3TAzA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-export-namespace-from": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-function-bind": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-function-bind/-/plugin-proposal-function-bind-7.2.0.tgz",
-      "integrity": "sha512-qOFJ/eX1Is78sywwTxDcsntLOdb5ZlHVVqUz5xznq8ldAfOVIyZzp1JE2rzHnaksZIhrqMrwIpQL/qcEprnVbw==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-function-bind": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-function-sent": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-function-sent/-/plugin-proposal-function-sent-7.2.0.tgz",
-      "integrity": "sha512-qQBDKRSCu1wGJi3jbngs18vrujVQA4F+OkSuIQYRhE6y19jcPzeEIGOc683mCQXDUR3BQCz8JyCupIwv+IRFmA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/helper-wrap-function": "^7.2.0",
-        "@babel/plugin-syntax-function-sent": "^7.2.0"
-      }
-    },
     "@babel/plugin-proposal-json-strings": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-json-strings/-/plugin-proposal-json-strings-7.2.0.tgz",
@@ -671,36 +620,6 @@
         "@babel/plugin-syntax-json-strings": "^7.2.0"
       }
     },
-    "@babel/plugin-proposal-logical-assignment-operators": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-logical-assignment-operators/-/plugin-proposal-logical-assignment-operators-7.2.0.tgz",
-      "integrity": "sha512-0w797xwdPXKk0m3Js74hDi0mCTZplIu93MOSfb1ZLd/XFe3abWypx1QknVk0J+ohnsjYpvjH4Gwfo2i3RicB6Q==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-logical-assignment-operators": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-nullish-coalescing-operator": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-nullish-coalescing-operator/-/plugin-proposal-nullish-coalescing-operator-7.2.0.tgz",
-      "integrity": "sha512-QXj/YjFuFJd68oDvoc1e8aqLr2wz7Kofzvp6Ekd/o7MWZl+nZ0/cpStxND+hlZ7DpRWAp7OmuyT2areZ2V3YUA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-nullish-coalescing-operator": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-numeric-separator": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-numeric-separator/-/plugin-proposal-numeric-separator-7.2.0.tgz",
-      "integrity": "sha512-DohMOGDrZiMKS7LthjUZNNcWl8TAf5BZDwZAH4wpm55FuJTHgfqPGdibg7rZDmont/8Yg0zA03IgT6XLeP+4sg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-numeric-separator": "^7.2.0"
-      }
-    },
     "@babel/plugin-proposal-object-rest-spread": {
       "version": "7.3.2",
       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.3.2.tgz",
@@ -721,36 +640,6 @@
         "@babel/plugin-syntax-optional-catch-binding": "^7.2.0"
       }
     },
-    "@babel/plugin-proposal-optional-chaining": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.2.0.tgz",
-      "integrity": "sha512-ea3Q6edZC/55wEBVZAEz42v528VulyO0eir+7uky/sT4XRcdkWJcFi1aPtitTlwUzGnECWJNExWww1SStt+yWw==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-optional-chaining": "^7.2.0"
-      }
-    },
-    "@babel/plugin-proposal-pipeline-operator": {
-      "version": "7.3.2",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-pipeline-operator/-/plugin-proposal-pipeline-operator-7.3.2.tgz",
-      "integrity": "sha512-wuzx8U/KZLJYoqU6joiaKY0PixHuYZ3Vxys+wPahNAZEEm+EDb1eTc19DuJob3BdxYSD9PWPbwyoRbhkdoYErg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-pipeline-operator": "^7.3.0"
-      }
-    },
-    "@babel/plugin-proposal-throw-expressions": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-throw-expressions/-/plugin-proposal-throw-expressions-7.2.0.tgz",
-      "integrity": "sha512-adsydM8DQF4i5DLNO4ySAU5VtHTPewOtNBV3u7F4lNMPADFF9bWQ+iDtUUe8+033cYCUz+bFlQdXQJmJOwoLpw==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-throw-expressions": "^7.2.0"
-      }
-    },
     "@babel/plugin-proposal-unicode-property-regex": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.2.0.tgz",
@@ -780,69 +669,6 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
-    "@babel/plugin-syntax-do-expressions": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-do-expressions/-/plugin-syntax-do-expressions-7.2.0.tgz",
-      "integrity": "sha512-/u4rJ+XEmZkIhspVuKRS+7WLvm7Dky9j9TvGK5IgId8B3FKir9MG+nQxDZ9xLn10QMBvW58dZ6ABe2juSmARjg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-dynamic-import": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-dynamic-import/-/plugin-syntax-dynamic-import-7.2.0.tgz",
-      "integrity": "sha512-mVxuJ0YroI/h/tbFTPGZR8cv6ai+STMKNBq0f8hFxsxWjl94qqhsb+wXbpNMDPU3cfR1TIsVFzU3nXyZMqyK4w==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-export-default-from": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-export-default-from/-/plugin-syntax-export-default-from-7.2.0.tgz",
-      "integrity": "sha512-c7nqUnNST97BWPtoe+Ssi+fJukc9P9/JMZ71IOMNQWza2E+Psrd46N6AEvtw6pqK+gt7ChjXyrw4SPDO79f3Lw==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-export-namespace-from": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-export-namespace-from/-/plugin-syntax-export-namespace-from-7.2.0.tgz",
-      "integrity": "sha512-1zGA3UNch6A+A11nIzBVEaE3DDJbjfB+eLIcf0GGOh/BJr/8NxL3546MGhV/r0RhH4xADFIEso39TKCfEMlsGA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-function-bind": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-function-bind/-/plugin-syntax-function-bind-7.2.0.tgz",
-      "integrity": "sha512-/WzU1lLU2l0wDfB42Wkg6tahrmtBbiD8C4H6EGSX0M4GAjzN6JiOpq/Uh8G6GSoR6lPMvhjM0MNiV6znj6y/zg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-function-sent": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-function-sent/-/plugin-syntax-function-sent-7.2.0.tgz",
-      "integrity": "sha512-2MOVuJ6IMAifp2cf0RFkHQaOvHpbBYyWCvgtF/WVqXhTd7Bgtov8iXVCadLXp2FN1BrI2EFl+JXuwXy0qr3KoQ==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-import-meta": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-import-meta/-/plugin-syntax-import-meta-7.2.0.tgz",
-      "integrity": "sha512-Hq6kFSZD7+PHkmBN8bCpHR6J8QEoCuEV/B38AIQscYjgMZkGlXB7cHNFzP5jR4RCh5545yP1ujHdmO7hAgKtBA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
     "@babel/plugin-syntax-json-strings": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-json-strings/-/plugin-syntax-json-strings-7.2.0.tgz",
@@ -861,33 +687,6 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
-    "@babel/plugin-syntax-logical-assignment-operators": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-logical-assignment-operators/-/plugin-syntax-logical-assignment-operators-7.2.0.tgz",
-      "integrity": "sha512-l/NKSlrnvd73/EL540t9hZhcSo4TULBrIPs9Palju8Oc/A8DXDO+xQf04whfeuZLpi8AuIvCAdpKmmubLN4EfQ==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-nullish-coalescing-operator": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-nullish-coalescing-operator/-/plugin-syntax-nullish-coalescing-operator-7.2.0.tgz",
-      "integrity": "sha512-lRCEaKE+LTxDQtgbYajI04ddt6WW0WJq57xqkAZ+s11h4YgfRHhVA/Y2VhfPzzFD4qeLHWg32DMp9HooY4Kqlg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-numeric-separator": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-numeric-separator/-/plugin-syntax-numeric-separator-7.2.0.tgz",
-      "integrity": "sha512-DroeVNkO/BnGpL2R7+ZNZqW+E24aR/4YWxP3Qb15d6lPU8KDzF8HlIUIRCOJRn4X77/oyW4mJY+7FHfY82NLtQ==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
     "@babel/plugin-syntax-object-rest-spread": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-object-rest-spread/-/plugin-syntax-object-rest-spread-7.2.0.tgz",
@@ -906,33 +705,6 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
-    "@babel/plugin-syntax-optional-chaining": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-optional-chaining/-/plugin-syntax-optional-chaining-7.2.0.tgz",
-      "integrity": "sha512-HtGCtvp5Uq/jH/WNUPkK6b7rufnCPLLlDAFN7cmACoIjaOOiXxUt3SswU5loHqrhtqTsa/WoLQ1OQ1AGuZqaWA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-pipeline-operator": {
-      "version": "7.3.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-pipeline-operator/-/plugin-syntax-pipeline-operator-7.3.0.tgz",
-      "integrity": "sha512-LAa3ZcOAyfPOUDTp0W5EiXGSAFh1vz9sD8yY7sZzWzEkZdIC404pqBP60Yfu9GJDj0ggh+UTQY6EYlIDXVr0/Q==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
-    "@babel/plugin-syntax-throw-expressions": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-throw-expressions/-/plugin-syntax-throw-expressions-7.2.0.tgz",
-      "integrity": "sha512-ngwynuqu1Rx0JUS9zxSDuPgW1K8TyVZCi2hHehrL4vyjqE7RGoNHWlZsS7KQT2vw9Yjk4YLa0+KldBXTRdPLRg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
     "@babel/plugin-transform-arrow-functions": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-arrow-functions/-/plugin-transform-arrow-functions-7.2.0.tgz",
@@ -1327,11 +1099,14 @@
         "@babel/plugin-transform-react-jsx-source": "^7.0.0"
       }
     },
-    "@babel/preset-stage-0": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/preset-stage-0/-/preset-stage-0-7.0.0.tgz",
-      "integrity": "sha512-FBMd0IiARPtH5aaOFUVki6evHiJQiY0pFy7fizyRF7dtwc+el3nwpzvhb9qBNzceG1OIJModG1xpE0DDFjPXwA==",
-      "dev": true
+    "@babel/runtime": {
+      "version": "7.3.1",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.3.1.tgz",
+      "integrity": "sha512-7jGW8ppV0ant637pIqAcFfQDDH1orEPGJb8aXfUozuCU3QqX7rX4DA8iwrbPrR1hcH0FTTHz47yQnk+bl5xHQA==",
+      "dev": true,
+      "requires": {
+        "regenerator-runtime": "^0.12.0"
+      }
     },
     "@babel/template": {
       "version": "7.1.0",
@@ -4601,8 +4376,7 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -4623,14 +4397,12 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -4645,20 +4417,17 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -4775,8 +4544,7 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "ini": {
           "version": "1.3.5",
@@ -4788,7 +4556,6 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -4803,7 +4570,6 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -4811,14 +4577,12 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -4837,7 +4601,6 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -4918,8 +4681,7 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -4931,7 +4693,6 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -5017,8 +4778,7 @@
         "safe-buffer": {
           "version": "5.1.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -5054,7 +4814,6 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -5074,7 +4833,6 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -5118,14 +4876,12 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "yallist": {
           "version": "3.0.2",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         }
       }
     },
@@ -8530,6 +8286,12 @@
         "regenerate": "^1.4.0"
       }
     },
+    "regenerator-runtime": {
+      "version": "0.12.1",
+      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz",
+      "integrity": "sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==",
+      "dev": true
+    },
     "regenerator-transform": {
       "version": "0.13.3",
       "resolved": "https://registry.npmjs.org/regenerator-transform/-/regenerator-transform-0.13.3.tgz",
diff --git a/package.json b/package.json
index 87ae41c2..e8ce44ac 100644
--- a/package.json
+++ b/package.json
@@ -24,25 +24,10 @@
     "@babel/core": "7.2.2",
     "@babel/plugin-proposal-class-properties": "7.3.0",
     "@babel/plugin-proposal-decorators": "7.3.0",
-    "@babel/plugin-proposal-do-expressions": "7.2.0",
-    "@babel/plugin-proposal-export-default-from": "7.2.0",
-    "@babel/plugin-proposal-export-namespace-from": "7.2.0",
-    "@babel/plugin-proposal-function-bind": "7.2.0",
-    "@babel/plugin-proposal-function-sent": "7.2.0",
-    "@babel/plugin-proposal-json-strings": "7.2.0",
-    "@babel/plugin-proposal-logical-assignment-operators": "7.2.0",
-    "@babel/plugin-proposal-nullish-coalescing-operator": "7.2.0",
-    "@babel/plugin-proposal-numeric-separator": "7.2.0",
-    "@babel/plugin-proposal-object-rest-spread": "7.3.2",
-    "@babel/plugin-proposal-optional-chaining": "7.2.0",
-    "@babel/plugin-proposal-pipeline-operator": "7.3.2",
-    "@babel/plugin-proposal-throw-expressions": "7.2.0",
-    "@babel/plugin-syntax-dynamic-import": "7.2.0",
-    "@babel/plugin-syntax-import-meta": "7.2.0",
     "@babel/plugin-transform-runtime": "7.2.0",
     "@babel/preset-env": "7.3.1",
     "@babel/preset-react": "7.0.0",
-    "@babel/preset-stage-0": "7.0.0",
+    "@babel/runtime": "^7.3.1",
     "autoprefixer": "9.4.7",
     "babel-eslint": "10.0.1",
     "babel-loader": "8.0.5",
diff --git a/src/containers/index.js b/src/containers/index.js
index 7a062894..b44648e7 100644
--- a/src/containers/index.js
+++ b/src/containers/index.js
@@ -4,6 +4,13 @@ import { hot } from 'react-hot-loader';
 export default
 @hot(module)
 class Main extends Component {
+  // this is test function, please remove it before develop.
+  async componentDidMount() {
+    const a = await Promise.resolve({ react: 1, maker: 2 });
+    const b = { ...a };
+    console.log(b);
+  }
+
   render() {
     return (
       <div style={{ textAlign: 'center' }}>