.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "targets": {
          "browsers": [
            "Chrome >= 52",
            "FireFox >= 44",
            "Safari >= 7",
            "Explorer 11",
            "last 4 Edge versions",
          ]
        },
        "modules": "cjs",
        "useBuiltIns": false
      }
    ],
    "@babel/preset-react"
  ],
  "plugins": [
    "@babel/plugin-proposal-object-rest-spread",
    "syntax-async-functions",
    "@babel/plugin-transform-runtime",
    "@babel/plugin-transform-regenerator",
    "flow-react-proptypes",
    "@babel/transform-flow-strip-types",
    "@babel/plugin-syntax-dynamic-import",
    [
      "@babel/plugin-proposal-private-property-in-object",
      {
        "loose": true
      }
    ],
    [
      "@babel/plugin-proposal-class-properties",
      {
        "loose": true
      }
    ],
    [
      "@babel/plugin-proposal-private-methods",
      {
        "loose": true
      }
    ],
    [
      "babel-plugin-webpack-alias-7",
      {
        "config": "./webpack.config.base.js"
      }
    ],
    "css-modules-transform",
    "@babel/plugin-proposal-export-default-from",
    "@babel/plugin-transform-modules-commonjs",
    "@babel/plugin-proposal-optional-chaining"
  ]
}