chore(deps): udpate babel

Author: azu

.babelrc

@@ -1,13 +1,5 @@
 {
   "presets": [
-    "es2015"
-  ],
-  "env": {
-    "development": {
-      "presets": [
-        "jsdoc-to-assert",
-        "power-assert"
-      ]
-    }
-  }
+    "@babel/preset-env"
+  ]
 }

.mocharc.json

@@ -0,0 +1,6 @@
+{
+  "timeout": "5000",
+  "require": [
+    "@babel/register"
+  ]
+}