npm scripts for bundling and transpiling es6 modules, with babel, rollup and postcss

package.json

{
  "author": "Victor Nystad",
  "scripts": {
    "postinstall": "./node_modules/bower/bin/bower install && npm start",
    "start": "npm run watch:js & npm run watch:css & npm run serve",
    "preserve": "npm run build:js & npm run build:css",
    "serve": "browser-sync start --server www --server dist --server bower_components --files 'dist/*, www/*'",
    "watch:js" : "chokidar 'index.js' -c 'npm run build:js'",
    "watch:css" : "chokidar 'css/*.css' -c 'npm run build:css'",
    "build:js": "mkdir -p dist && rollup index.js | babel -m umd --module-id fotballdataElements -o dist/test.js",
    "build:css": "postcss -u autoprefixer --autoprefixer.browsers 'last 2 versions' -u postcss-import -o dist/test.css css/index.css"
  },
  "devDependencies": {
    "autoprefixer": "^6.0.3",
    "babel": "^5.8.23",
    "bower": "^1.5.2",
    "browser-sync": "^2.9.3",
    "chokidar-cli": "^1.0.1",
    "postcss-cli": "^2.1.0",
    "postcss-import": "^7.0.0",
    "rollup": "^0.16.2"
  }
}