message: Run Flow with --show-all-errors
  To aid in diagnosing:
diff: "build": "npm run build-js && npm run build-flow",
  "build-js": "babel-node resources/buildJs.js",
  "build-flow": "babel-node resources/buildFlow.js",
  - "check": "flow check",
  + "check": "flow check --show-all-errors",
  "check-dependencies": "node resources/checkDependencies.js",
  "prepublish": "node resources/prepublish.js",
  "pretty": "node resources/pretty.js",
  