message: ref: IE10 is not supported in Mocha v5
diff: "jest": "^22.4.3",
  "karma-sinon": "^1.0.5",
  "lerna": "3.4.0",
  - "mocha": "^5.1.1",
  + "mocha": "^4.1.0",
  "npm-run-all": "^4.1.2",
  "prettier": "^1.14.0",
  "prettier-check": "^2.0.0",
  