NPM Package scripts cleaned up using pre and post hooks

Medium-ecf2cfb0a3f8-6.json

{
  "scripts": {
    "lint": "tslint -p tsconfig.json",
    "pretest": "rimraf converage",
    "test": "jest",
    "prebuild:prod": "npm run lint && npm test",
    "build:prod": "webpack - mode production",
    "prebuild": "rimraf dist",
    "build": "npm run build:prod",
    "postbuild": "npm run deploy",
    "deploy": "gh-pages -d dist"
  }
}