message: remove unnecessary pretest script that triggers an nyc bug
diff: "cover": "nyc npm -s test",
  "extract-api": "betools extract-api --entry=core-transformer",
  "lint": "eslint -f visualstudio \"./src/**/*.ts\" 1>&2",
  - "pretest": "npm run copy:test-assets",
  "test": "mocha"
  },
  "repository": {
  