message: tslib is a peer dependency of ix, so adding to dependencies, since ix is used in code (not just in dev/test)
diff: "resolve": "^1.3.3",
  "rimraf": "^2.6.1",
  "semver": "^5.3.0",
  - "source-map-support": "^0.4.15"
  + "source-map-support": "^0.4.15",
  + "tslib": "^1.7.1"
  },
  "devDependencies": {
  "chalk": "^2.0.1",
  