update ts-node & some dependencies (#154)

Author: xingoxu

package-lock.json

@@ -53,7 +53,7 @@
     "mocha": "^5.2.0",
     "nyc": "^13.3.0",
     "prettier": "^1.15.2",
-    "ts-node": "^3.3.0",
+    "ts-node": "^8.3.0",
     "typescript": "^3.1.6",
     "vuepress": "^0.14.10"
   },