message: packages/core: list types as dependencies
diff: "@backstage/theme": "^0.1.1-alpha.5",
  "@material-ui/core": "^4.9.1",
  "@material-ui/icons": "^4.9.1",
  + "@types/classnames": "^2.2.9",
  + "@types/google-protobuf": "^3.7.2",
  + "@types/jest": "^25.2.1",
  + "@types/node": "^12.0.0",
  + "@types/react-helmet": "^5.0.15",
  + "@types/react-sparklines": "^1.7.0",
  + "@types/zen-observable": "^0.8.0",
  "classnames": "^2.2.6",
  "clsx": "^1.1.0",
  "lodash": "^4.17.15",
  "@backstage/test-utils-core": "^0.1.1-alpha.5",
  "@testing-library/jest-dom": "^4.2.4",
  "@testing-library/react": "^9.3.2",
  - "@testing-library/user-event": "^7.1.2",
  - "@types/classnames": "^2.2.9",
  - "@types/google-protobuf": "^3.7.2",
  - "@types/jest": "^25.2.1",
  - "@types/node": "^12.0.0",
  - "@types/react-helmet": "^5.0.15",
  - "@types/react-sparklines": "^1.7.0",
  - "@types/zen-observable": "^0.8.0"
  + "@testing-library/user-event": "^7.1.2"
  },
  "files": [
  "dist/**/*.{js,d.ts}"
  