.babelrc

{
  "presets": [
    "@babel/preset-env",
    [
      "@babel/preset-react",
      { "runtime": "automatic" }
    ],
    "@babel/preset-typescript"
  ],
  "plugins": [
    "@babel/plugin-transform-runtime",
    "@babel/plugin-proposal-object-rest-spread",
    ["@babel/plugin-proposal-private-property-in-object", { "loose": true }],
    ["@babel/plugin-proposal-private-methods", { "loose": true }],
    ["module-resolver", {
      "alias": {
        "src": "./src",
        "scss": "./scss"
      }
    }]
  ],
  "env": {
    "production": {
      "plugins": [
        [
          "@babel/plugin-proposal-class-properties",
          {
            "loose": true
          }
        ],
        [
          "transform-react-remove-prop-types",
          {
            "removeImport": true
          }
        ]
      ]
    },
    "test": {
      "plugins": [
        [
          "@babel/plugin-proposal-class-properties",
          {
            "loose": true
          }
        ]
      ]
    }
  }
}