.babelrc

{
  "presets": [
    "@babel/preset-env",
    "@babel/preset-react",
    "@babel/preset-flow"
  ],
  "plugins": [
    "react-hot-loader/babel",
    [
      "module-resolver",
      {
        "root": [
          "./client"
        ],
        "extensions": [
          ".js",
          ".jsx"
        ],
        "alias": {
          "app": "./client",
          "assets": "./client/assets",
          "pages": "./client/pages",
          "components": "./client/components",
          "modules": "./client/modules",
          "constants": "./client/constants",
          "utils": "./client/utils"
        }
      }
    ],
    "@babel/plugin-transform-runtime",
    "@babel/plugin-proposal-class-properties",
    "@babel/plugin-transform-object-assign"
  ],
  "env": {
    "test": {
      "plugins": [
        "@babel/plugin-transform-modules-commonjs"
      ]
    }
  }
}