message: strict nyc version
diff: "mock-http-server": "0.2.0",
  "natives": "1.1.6",
  "npm-run-all": "4.1.5",
  - "nyc": "^13.3.0",
  + "nyc": "13.3.0",
  "plist": "3.0.1",
  "remap-istanbul": "0.13.0",
  "source-map-support": "0.5.10",
  