message: Fix the build, downgrade to "@types/react": "16.4.2", due  breacking change in react via this commit:
diff: "@types/knockout": "3.4.46",
  "@types/node": "7.0.4",
  "@types/qunit": "2.0.31",
  - "@types/react": "^16.0.38",
  + "@types/react": "16.4.2",
  "@types/react-dom": "^16.0.4",
  "prettier": "~1.12.0",
  "ajv": "4.11.2",
  