.babelrc

{
  "presets": [
    [
      "env",
      {
        "targets": {
          "browsers": ["last 2 versions", "safari >= 7"],
          "uglify": true
        },
        "modules": "umd"
      }
    ]
  ],
  "plugins": [
    "transform-object-rest-spread",
    "transform-vue-jsx",
    [
      "transform-runtime",
      {
        "polyfill": true,
        "regenerator": true
      }
    ]
  ]
}