message: build(root): prepublish only script
diff: "name": "marblejs",
  "description": "Reactive Node APIs made easy",
  "scripts": {
  - "postinstall": "yarn build",
  + "postinstall": "yarn build && yarn test",
  "build": "lerna link && lerna bootstrap --hoist",
  "benchmark": "make -C benchmarks",
  "watch": "lerna run --parallel --stream watch",
  "test:coverage": "SCOPE=unit jest --expand --coverage",
  "test:watch": "jest --expand --onlyChanged --watch",
  "clean": "lerna run clean",
  - "prepare": "yarn test",
  + "prepublishOnly": "yarn build && yarn test",
  "publish": "lerna publish",
  "precommit": "lint-staged"
  },
  