ionic project with npm script as build tool

package.json

{
  "name": "generator-ionic-npm",
  "version": "1.1.1",
  "description": "Ionic app generator for yeoman using npm scripts as build tool",
  "scripts": {
    "scss": "node-sass --output-style compressed -o www/css src/scss",
    "lint": "jshint src",
    "concat": "node npm_scripts/concat.js",
    "concat-vendor": "node npm_scripts/concat.vendor.js",
    "uglify": "uglifyjs www/js/app.bundle.js -c -m -o www/js/app.bundle.min.js",

    "build:css": "mkdir -p www/css && npm run scss",
    "build:js": "mkdir -p www/js && npm run lint && npm run concat && npm run uglify",
    "build": "npm run build:css && npm run build:js",

    "watch:css": "onchange 'src/scss' -- npm run build:css",
    "watch:js": "onchange 'src/js' -- npm run build:js",
    "watch": "npm run build && npm-run-all -p serve watch:css watch:js",

    "test": "echo 'TODO: add testing framework integration'",

    "clean": "rm -rf www/{css,js}",
    "serve": "ionic serve"
  },
  "devDependencies": {
    "bower": "^1.3.3",
    "browser-sync": "^2.12.8",
    "concatenate-files": "^0.1.1",
    "jshint": "^2.9.2",
    "node-sass": "^3.7.0",
    "npm-run-all": "^2.1.1",
    "onchange": "^2.4.0",
    "shelljs": "^0.3.0",
    "uglify-js": "^2.6.2"
  },
  "cordovaPlugins": [
    "cordova-plugin-device",
    "cordova-plugin-console",
    "cordova-plugin-whitelist",
    "cordova-plugin-splashscreen",
    "cordova-plugin-statusbar",
    "ionic-plugin-keyboard"
  ],
  "cordovaPlatforms": []
}