Sass + Pug + Browsersync minimal packages

package.json

{
  "name": "your-application",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "compile:pug": "pug src/*.pug --out dist/ --watch",
    "compile:sass": "sass src/index.scss:dist/index.css --watch",
    "build": "npm run compile:pug && npm run compile:sass",
    "serve": "browser-sync start --server --serveStatic 'dist' --files 'dist'",
    "start": "concurrently \"npm run compile:pug\" \"npm run compile:sass\" \"npm run serve\""
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "browser-sync": "^2.26.13",
    "concurrently": "^5.3.0",
    "pug-cli": "^1.0.0-alpha6",
    "sass": "^1.29.0"
  }
}