.babelrc

{
  "presets": [
      ["latest", {
        "es2015": {
          "modules": false
        }
      }]
  ],
  "plugins": [
      "external-helpers",
  	"transform-es3-property-literals",
    "transform-es3-member-expression-literals",
    "transform-es2015-template-literals",
    "transform-es2015-literals",
    "transform-es2015-function-name",
    "transform-es2015-arrow-functions",
    "transform-es2015-block-scoped-functions",
    "transform-es2015-classes",
    "transform-es2015-object-super",
    "transform-es2015-shorthand-properties",
    "transform-es2015-computed-properties",
    "transform-es2015-for-of",
    "transform-es2015-sticky-regex",
    "transform-es2015-unicode-regex",
    "check-es2015-constants",
    "transform-es2015-spread",
    "transform-es2015-parameters",
    "transform-es2015-destructuring",
    "transform-es2015-block-scoping",
    "transform-es2015-typeof-symbol", ["transform-regenerator", {
        "async": false,
        "asyncGenerators": false
    }]
  ]
}