Needed changes csg pkg

.babelrc

{
  "presets": [
    "es2015"
  ]
}

package.json

{
  "name": "csg.js",
  "version": "0.0.0",
  "description": "",
  "repository": "https://github.com/jscad/csg.js",
  "main": "csg.js",
  "scripts": {
      "test": "ava './src/**/*.test.js' --require babel-register  --verbose --timeout 10000",
    "release-patch": "git checkout master; npm version patch && npm run build; git commit -a -m 'chore(dist): built dist/'; git push origin master --tags ",
    "release-minor": "git checkout master; npm version minor && npm run build; git commit -a -m 'chore(dist): built dist/'; git push origin master --tags ",
    "release-major": "git checkout master; npm version major && npm run build; git commit -a -m 'chore(dist): built dist/'; git push origin master --tags ",
  },
  "contributors": [
    {
      "name": "Alexandre Girard",
      "url":"https://github.com/alx"
    },
    {
      "name": "Evan Wallace",
      "url":"http://evanw.github.com/csg.js/"
    },
    {
      "name": "Joost Nieuwenhuijse",
      "email" : "[email protected]"
    },
    {
      "name": "Eduard Bespalov",
      "url":"http://evanw.github.com/csg.js/"
    },
    {
      "name":"bebbi",
      "email" : "[email protected]"
    },
    {
      "name": "Spiritdude Rene K Mueller",
      "url": "http://renekmueller.com"
    },
    {
      "name": "Jeff Gay",
      "url": "http://www.z3d.jp"
    }
  ],
  "license": "MIT",
  "dependencies": {},
  "devDependencies": {
     "ava": "^0.15.2",
    "babel": "^6.5.2",
    "babel-cli": "^6.18.0",
    "babel-core": "^6.21.0",
    "babel-preset-es2015": "^6.18.0"
  }
}