.babelrc

{
  "presets": [
    "@babel/preset-react",
    [
      "@babel/preset-typescript",
      {
        "isTSX": true,
        "allExtensions": true
      }
    ],
    "@babel/preset-env"
  ],
  "plugins": [
    ["@babel/plugin-proposal-decorators", { "legacy": true }],
    ["@babel/plugin-proposal-class-properties", { "loose": true }],
    "@babel/plugin-proposal-object-rest-spread",
    "babel-plugin-styled-components",
    "@babel/plugin-transform-runtime",
    "@babel/plugin-syntax-optional-chaining",
    "@babel/plugin-proposal-optional-chaining"
  ]
}