.babelrc

{
  "plugins": [
    ["transform-es2015-template-literals", { "loose": true }],
    "transform-es2015-literals",
    "transform-es2015-function-name",
    "transform-es2015-arrow-functions",
    "transform-es2015-block-scoped-functions",
    ["transform-es2015-classes", { "loose": true }],
    "transform-es2015-object-super",
    "transform-es2015-shorthand-properties",
    ["transform-es2015-computed-properties", { "loose": true }],
    ["transform-es2015-for-of", { "loose": true }],
    "transform-es2015-sticky-regex",
    "transform-es2015-unicode-regex",
    "check-es2015-constants",
    ["transform-es2015-spread", { "loose": true }],
    "transform-es2015-parameters",
    ["transform-es2015-destructuring", { "loose": true }],
    "transform-es2015-block-scoping",
    "transform-es3-member-expression-literals",
    "transform-es3-property-literals",
  ],
  "env": {
    "commonjs": {
      "plugins": [
        ["transform-es2015-modules-commonjs", { "loose": true }],
      ]
    },
  }
}