JoL-player/.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "targets": {
          "edge": 17,
          "firefox": 60,
          "chrome": 67,
          "safari": 11
        },
        "useBuiltIns": "usage",
        "corejs": "2.6.10"
      }
    ],
    "@babel/preset-react",
    "@babel/preset-typescript"
  ]
}