message: webpack-extensions: webpack is now a peerDep
  closes
  used same range as webpack-plugin
diff: "test": "mocha \"test/**/*.spec.ts?(x)\" --timeout 20000",
  "prepack": "yarn build"
  },
  + "peerDependencies": {
  + "webpack": "^4.6.0"
  + },
  "dependencies": {
  "@stylable/core": "^2.5.1",
  "@stylable/node": "^2.5.1",
  "lodash.clonedeep": "^4.5.0",
  "react": "^16.12.0",
  "react-dom": "^16.12.0",
  - "webpack": "^4.41.2",
  "webpack-sources": "^1.4.3"
  },
  "files": [
  