.babelrc

{
  "presets": [
    ["es2015", {"modules": false}],
    ["env", {
      "targets": {
        "browsers": "last 2 versions"
      },
      "loose": true,
      "modules": false
    }],
    "react"
  ],
  "plugins": [
    "react-hot-loader/babel",
    "syntax-dynamic-import",
    "dynamic-import-webpack",
    "transform-class-properties",
    "transform-decorators-legacy",
    "styled-components",
    "dynamic-import-node",
    ["import-inspector", {
      "serverSideRequirePath": true,
      "webpackRequireWeakId": true
    }]
  ],
  "env": {
    "development": {
      "plugins": ["transform-es2015-modules-commonjs"]
    },
    "production": {
      "plugins": ["transform-es2015-modules-commonjs"]
    },
    "server": {
      "plugins": ["transform-es2015-modules-commonjs"]
    },
    "test": {
      "plugins": ["transform-es2015-modules-commonjs"]
    }
  }
}