message: this is due to a yarn bug:
  The env $n$pm_package_gitHead is apparently not supported by yarn.
  But if we replace that with $(git rev-parse HEAD) and it should result in the same value.
diff: "prettier": "prettier --write \"src/**/*.{js,jsx,ts,tsx,json}\"",
  "lint": "tslint --project ./tsconfig.json",
  "lintfix": "tslint --fix --project ./tsconfig.json",
  - "start": "yarn copy-fonts && yarn copy-img && yarn build-css && yarn prettier && REACT_APP_VERSION=$npm_package_version REACT_APP_NAME=$npm_package_name REACT_APP_GIT_HASH=$npm_package_gitHead react-scripts-ts start",
  - "build": "yarn copy-fonts && yarn copy-img && yarn build-css && yarn prettier && REACT_APP_VERSION=$npm_package_version REACT_APP_NAME=$npm_package_name REACT_APP_GIT_HASH=$npm_package_gitHead react-scripts-ts build",
  + "start": "yarn copy-fonts && yarn copy-img && yarn build-css && yarn prettier && REACT_APP_VERSION=$npm_package_version REACT_APP_NAME=$npm_package_name REACT_APP_GIT_HASH=$(git rev-parse HEAD) react-scripts-ts start",
  + "build": "yarn copy-fonts && yarn copy-img && yarn build-css && yarn prettier && REACT_APP_VERSION=$npm_package_version REACT_APP_NAME=$npm_package_name REACT_APP_GIT_HASH=$(git rev-parse HEAD) react-scripts-ts build",
  "kiali": "node ./src/__itests__/Kiali.app.standalone.ts",
  "test": "yarn prettier && react-scripts-ts test --env=jsdom __tests__",
  "itest": "export CI=true && react-scripts-ts test __itests__",
  