npm scripts beats grunt

package.json

{
  "name": "P2",
  "version": "1.0.0",
  "scripts": {
    "init": "mkdirp out src/js/tests",
    "clean": "rimraf out/*",
    "test": "karma start",
    "test:once": "karma start --single-run",
    "prebuild": "cp src/$npm_package_name.* out/",
    "build": "browserify src/$npm_package_name.js > out/$npm_package_name.js",
    "start": "beefy src/$npm_package_name.js:$npm_package_name.js --index=src/$npm_package_name.html --live --cwd=src",
    "prepackage": "npm run clean && npm run build",
    "package": "jar cfM ${npm_package_name}kp1108.jar -C out/ .",
    "dev": "npm run start& npm run test&"
  },
  "author": "automaticgiant",
  "devDependencies": {
    "beefy": "^2.1.5",
    "browserify": "^9.0.8",
    "browserify-istanbul": "^0.2.1",
    "browserify-shim": "^3.8.5",
    "jasmine": "^2.2.1",
    "jasmine-core": "^2.2.0",
    "karma": "^0.12.31",
    "karma-browserify": "^4.1.2",
    "karma-cli": "0.0.4",
    "karma-firefox-launcher": "^0.1.4",
    "karma-jasmine": "^0.3.5",
    "karma-js-coverage": "^0.4.0",
    "karma-phantomjs-launcher": "^0.1.4",
    "mkdirp": "^0.5.0",
    "rimraf": "^2.3.2",
    "watchify": "^3.1.2"
  },
  "private": true,
  "browserify-shim": {
    "external": "global:External"
  }
}