message: trying github suggestion
diff: "@types/chai": "^4.1.4",
  "@types/lodash": "^4.14.109",
  "@types/mocha": "^5.2.3",
  - "@types/sinon": "^5.0.1",
  + "@types/sinon": ">=5.0.1",
  "@types/weak": "^1.0.0",
  "app-module-path": "^2.2.0",
  "chai": "^4.1.2",
  